@@mrpete222 I can't watch some people's videos with music that drowns out what they're saying. My ears are already ringing from years in the steel mills.
Wow, this brings back some memories. Back in the day my metal shop teacher took an interest in my work, he would give me special projects. In grade-12 (early '80s) he helped me design a tiny drill press for my dremel drill. He helped me hardening and grinding fly cutters for cutting the rack and pinion. The dremel is long gone but the drill press still works. Watching your videos remind me of him and a simpler time. Thank you Mr. Pete!
Once again interesting video, your mention of Cincinnati took me back some 58 years when as a teenager I was part of a that install a lift in Cincinnati UK factory I was also fortunate in been given a work tour by the Forman. They had machines there that were not part of their catalogue they just produced the parts for the others and boy were some of them big.
I know this operation is difficult and that's why I have been procrastinating on making a rack for a 9 inch South Bend lathe. But one day I will get it. Thanks Mrpete
Lyle, thank you for this series -- I look forward to seeing the follow-up videos. I'm going to have to buy a set of gear cutters to fill in the missing spots in my partial set of change gears, but I suspect that I'll make more gears (& racks) than what my _old_ lathe needs. Seeing you do this makes me want to just cut some gears/racks. ;) Also, thank Mrs. Pete for the list of coordinates, especially since we've now seen her in Adam's Florida Flywheeler Swap Meet video!
For some reason I always find gear cutting fastening. Thanks for another great one Mr. Pete, looking forward to the next part! Kuddos to Mrs. Pete for being so tolerant, half her kitchen is in the basement, yet she still doesn't mind helping out! :o)
That was a great video thanks. I was wondering if you couldn't have turned the rack around and cut the other direction to continue more teeth? Just curious.
Good information. If one wanted more teeth where there are obstruction limitations, note that if the workpiece is changed out end-to-end (at the 25:00 mark here), almost twice as many teeth can be cut. After "flipping" the piece, re-insert it into the vise and align a tooth with the cutter, then proceed to cut more.
Spacing the teeth exactly 0.157" here is only off by about 80 millionths of an inch (the correct spacing would be closer to 0.157080...). Since the pinion only engages a couple teeth at a time this error should not be a problem, so just stepping by 0.157 will be fine. This only becomes a problem if you want to use the rack for motion or measurement over larger distances where cumulative error would be a problem, so in this case, after 100 teeth (about 16") your tooth position would be off by 8 thou. This could also be a concern if the pinion were very large (hundreds of teeth) where you start getting more teeth in contact. I think the chart you have is just stepping the exact value 0.157, and so is giving the same results as manual stepping using the DRO. After 7 teeth the error exceeds half a thou, so the chart should read 1.100 for tooth number 7, and the error accumulates slowly, ending with 4.71 (should be 4.712) for tooth 30. More notably, the tooth matching the DP (20) should have a position equal to pi (3.1416-ish) but is 3.140 in the chart.
@@mattiase1876 Sorry, that was a typo, the "3.14116" should have read "3.1416" (and has now been corrected) which is the seldom-seen four-decimal-digit rounding of pi. I suppose I could have written "3.142" as well, and now I don't recall why I wanted another digit.
Thanks Mr Pete, I've learnt something once again from your videos. I really appreciate the effort that you put into these, must have been quite a lot of work to make that arbor. It also occurred to me that if you didn't have a mill you could possibly do that on a lathe. Using a similar arbor but with the cutter mounted in the middle, run the arbor in a collet and a centre. You would have to clamp the work somehow to the cross slide at the right height but it could be done. Cheers, Alan.
I spent two hours trying to see if I could set up my lathe With the milling attachment to cut the rack. I tried every possible position, at Cetera. It did not have the range or movement of the cross slide that would permit that area so I gave up. In fact that was the way that I originally going to do it
@@mrpete222 Well at least I'm not completely nuts for suggesting the lathe then 🙂 I was thinking that if you could somehow clamp the work lengthwise on the cross slide (in line with the arbor) you could use the carriage to position the work for each tooth and the cross slide to make the cut. I think the problem would be clamping the work at the right height and holding it securely.
The arbor press you have as an example is like twice the size of the one I had to make at school. I also had to make an arbor for the gear cutters and I also made one to fit in a 3/4" collet
"Providence, RI?" Interesting... Because I live a city over. I went to NEIT recently for a manufacturing and machining class. Best investment! I'm now a mechanic at a local manufacturer. The best part of my job? There is a Bridgeport and a lathe. Both need some TLC, and I believe that I came in at the right time to talk the supervisor in to requisitioning some funds to put towards said TLC. There are a few guys that know how to use said equipment, but not to any extent. It was mentioned that my supervisor wants to invest in a new lathe chuck, possibly a 6-jaw. Now that there is an employee interested and with a desire to take on a position involving this area, maybe I can convince him to make that investment. I may even be able to convince the company to send me back to school. I am confident that my instructor from NEIT would cosign my idea. As many can relate, this is a topic of passion, not just a job. At some point I will purchase a milling machine of my own. I am looking at a small Tormach, and a small to medium sized lathe. I look around and I see how 99% of what is there was at some point a project in a machine shop. I was introduced to cnc in 2006, and that was a wrap. While CNC is great! Manual machining is awesome! Thanks for your inspiration!
Very Professional mrpete. no such thing as a gear tooth cutter in my shop. would be using a single tooth cutter. I have made double ended HSS cutters, using existing gears to match up the tooth form. Gash it first with a slitting saw to speed things up . thank you for your classroom effort in our education. your dedication is obvious. keep up the good work !!
Thanks for the nice video. Been meaning to get a set of gear cutters just to play with. I did grind a single point cutter and cut a few gears in aluminum that matched my lathe change gears. Much to my amazement they ran fine. But I put the steel ones back on. I'm an old retired guy, most of what I machine is just to prove to myself that I can.
I know you probably can't hear it anymore, but I'd figure this would be a job for the shaper! Grinding the tool would be similar to an Acme Threading tool, you'd probably get a better surface finish on the teeth faces and you wouldn't need such a long arbor to reach in over the workpiece! Thanks for showing this, I particularly liked the flat spot on the right-angle drive for indicating. Saves a lot of trouble!
I just been watching some vids on cutting teeth like this one thing i was thinking why not make a bar for the lathe and use the cross table and have more room for more teeth cutting just a thought i had in watching a few with yrs! Keep up the great work!
I'm predicting I'll have a few hours to spend in future among all this Corona kerfuffle. I;m going to start watching your videos from number 1. Still in the process of restoring my Taiwan mill. Life will go on. All is not as it seems. Cheers and kindest regards to you and your family. Stay healthy old UA-cam friend.
Like the right angle attachment, Tubalcain. Wonder if this could be done on a lathe with the arbor held between centers on the lathe and the work held in a vise that replaces the cross slide.
I ran across ; ) a free source of rack and pinions (usually in pairs) found in discarded tread mills (the type with an elevation feature). If your diligent in the harvesting of parts you can even save the pinion bearing and slot portion. Actually the treadmills are a cornucopia of useful parts, I used the elevator motor to power my bead roller.
Thank you, I will watch for one of them. Many of them do not have much use on them. People buy them with great expectations for getting exercise and losing weight. They look like lots of fun in the advertisements
At 28:29. The teeth on a rack are almost straight ! They are straight. That's what the pressure angle is. The inclination angle of the side wall in degrees from the vertical.
Another great video, thank you. As the sides of the rack teeth are actually straight, could you use a tapered cutter (D-bit) to cut the teeth on the vertical mill? That would eliminate the length restriction.
Another key bit about racks is: You do not *need* competent thread-cutting or existing threaded materials to make (at least a crummy) one. Which makes racks one of the answers to "If you use lathes to cut threads, where could the 'first thread' come from?" A really bad "rack-based" thread-cutting lathe can make ... a better lathe.
Personally, I would like to see you cutting a rack or broach on the shaper? After all that type of work is what shapers were designed to do. That setup cannot be rigid enough for accurate work.
Those right-angle attachments for the Bridgeport are common enough that you'd think some bright Chinese toolmaker would start making gear cutter sets just a whisker larger than the diameter of the housing plus the depth of cut. I can't see chatter being a problem (or if it is, just make the body of the cutter thicker!), and I doubt if the cost would be vastly increased.
One task where the shaper can allow making a longer one. My table can travel across quite a distance, but think work holding is where you are going to find your limitations on how far you can go without having to reset the work. The other issue is that my shaper has a rough time with straight down plunge cuts past .10 ... Steve Summers demonstrated a way to get around that, it is similar to the method used for single point thread cutting on the lathe. I've been trying to think of how to do the same thing with a round gear that isn't a complicated set up task. I think, in the end, it is going to come down to laying it out in the CAD program and letting it give me the numbers. That has always been a good way for me to remove the madness from a method, you might say ...
You mention several times that the rack teeth are almost straight. They are dead straight, this is the principle that makes the gear teeth roll on the rack teeth.
I'm sure you realize this already but you could double the length of rack you cut by turning the piece around and carefully lining up the cutter with the first tooth. You'd need to be careful about the length of your work piece for this to work.
Thank You Lyle...I was wondering. I was always taught to have the cutting force against the solid jaw of the vise as much as possible. I was wondering if you could have just flipped your cutter around and approach the work from the front to the back instead of from the back to the front ? Everything would be the same with the same results except the cutting force of the cutter would always be towards the solid jaw instead of the floating jaw...tm
Rofl... humble shop? 15,000 tools in the background alone on the wall lol. I have no idea why I watched the spot welder videos. Some how 3 hours after that I ended up here. Was the video I wanted to see to start with. Interesting anyhow!
Hi Lyle. This was very interesting, Thank You. Now, I don't really know how to use a 3D printer, but could you copy those Comparative Sizes of Gears and print out a set of gear gauges? Then next time you go down to the school, get the boys to cut out some as a "Technical Development Lesson"..... :)
Enjoyed the video. One comment, I think you are doing McMaster Carr a disservice when you threw out the $50 shipping figure. I've always found McMasters Carr's shipping rates to be very fair and seriously doubt they would charge anything even close to $50 to ship a 24” rack.
Mr Pete, during this unprecedented crisis, as our youtube shop teacher can you recommend materials that we can use to do introductory shop for our grandchildren? Maybe even start a series for us?
Not really, but I think the best thing would be to show them elementary woodworking skills. There are probably lots of videos on that. Make a birdhouse, build a model, and fact, show them all the things that we did when we were kids. We had no TV no computer no idiotic Nintendo’s.
I've run Bridgeports and many other vertical milling machines but haven't any experience with the horizontal attachment or right angle drive as you put it.I'm actually surprised I'm not familiar with it!
Another very helpfull series, even though its only the first video, your series always are. What keeps you motivated? Lately I have almost stopped working in my home shop in favour of watching many youtube creators like yourself, I always say to myself thats an interesting project or I need one of them but very few actually get made because something else comes out in another video and away we go again. I think I need to stop watching as lately(last 6 months) I feel more adicted to watching than actually doing, hence my question, has it ever happened to you and if so how did you get over it and back to the doing. thanks, DG
What you are experiencing is a common phenomenon. I am guilty of it myself. I watch about 20 videos per day. It is always easier than actually working. That is why how to do it books, and how to do it videos are so popular. Some people, Would rather watch a video on fishing, then to actually go. They would rather watch golf on TV then actually go to a golf course, and the list goes on. I’m cracking myself up telling you this
Man, that is weird! I've been watching your old videos, and you weren't on video, only your voice was on audio. I'd say you weren't who I imagined, but I can't picture who I imagined, I guess that voice just isn't supposed to come out of a person!
Nice project Mr. Pete. I'm looking forward to the rest of the series. I have a question about gear pressure angle that you didn't cover. Suppose you need to make a gear to mesh with another gear or a rack with an unknown pressure angle, i.e. "is it 14.5 degree or 20 degree?"; is there a way to determine pressure angle in the home shop?
The pressure angle comes from the rack. The inclination of the wall from the vertical is the pressure angle, so a 20 degree rack has a 40 degree vee. That's what pressure angle means.
@@peterrhodes5663 That makes sense, I hadn't thought about it in that way. I suppose a piece of 20 degree rack would be handy to check PA but one would be needed for every pitch you might come across. Perhaps there is an inexpensive set of gauges that mimic racks of various pitches which would help determine PA of an unknown gear
@@pyromedichd1 If you research the button tool that is used to make gear cutters, then you can measure your unknown gear angle, using the same calculations. 20 degree ones look chunkier than 14 1/2 ones. If the gear is not off some ancient peace of equipment, or a lathe, then it's probably 20 degrees, simply because they are stronger. Look up Eureka tool if you don't understand the above.
Would it be possible to flip the rack (assuming it is short enough), and sync the cutter in the first tooth you cut and make the rack almost twice as long?
Just buy tool steel aneal then turn your own gear cutters on lathe or even in drill press then temper and sharpen.... or cut tools for a fly cutter that can breed used in a drill press ....tolerances are dependent on the operator not the equipment .... also I have made racks very slowly using a feed table (al la hand driven shaper like )to cut using the feed handle to provide each cut only remove very light cuts took a long time manually but got er done.... using a tool ground with dremel to my needed shape.... each next tooth was indexed off the previous tooth....I grind cutters from small saw blades from the home despot.... the way you think spoken out loud isn't wasted time
Tubalcain,.... What would I do if you & Others haven't made so many videos to cover so many different subjects? I have an 8 inch horizontal vertical rotating table! And guess who is teach me how to use it by way of UA-cam video? Thank You so Much!
mrpete222 index plates are in my future! It was disappointing to see that you didn't get yours to fit: so you had to make one. I was thinking/hoping it would be just that simple for me. Man I hate math of all kind!
@@bernarditaylor7593 the formulas for the x/y hole coordinates for a circle with radius r and n holes are in the comments on one of the index plate videos - just plug those into a spreadsheet and you'll have a list, like the offset list in this video, in no time... Edit: added dropped 'l'
@@bernarditaylor7593 Bernard I Taylor if you want a bssic Excel file, give me a shout by mail to mylastname at Google's mailservice. Currently does up to 71 holes but easily extendable y simple dragging. Could probably do with some rounding of the results as well aspiring researcher than selected number of holes...
The scale and the display are almost never the same resolution so there is some conversion and rounding. If you zero on each tooth that can add up. For most things it does not matter but once you have worked on jobs where it does you tend to try to eliminate any errors you can in everything you do.
![Bridgebort Milling Machine [Rescue]](http://i.ytimg.com/vi/zGv7MkdIP_w/mqdefault.jpg)
hi Mr Pete!
lol
Lol
That's fun
Good Morning Mr. Pete, Good job on cutting a rack gear. Now time for some more coffee.
Mr. Pete, thanks for being my shop teacher
Thanks
Thanks for not having 'music'. Great tools.
Thank you for appreciating that!!!!!!!!!!!!!!!!!!
I take it then, that you do not want me to add some nice rap music to my videos. Might increase my viewership.
@@mrpete222 I can't watch some people's videos with music that drowns out what they're saying. My ears are already ringing from years in the steel mills.
@@mrpete222 Seeing you do a machining rap video might be worth it, I'd pay for that!
mrpete222 If you do the rap, then it's very welcome! Any other rap, not for your videos, please :)
Hello mrpete. You just saved my day. Setting here in my Home in qurantine because of the Corona virus. I hope this soon will be over. Stay safe..
Wow, this brings back some memories. Back in the day my metal shop teacher took an interest in my work, he would give me special projects. In grade-12 (early '80s) he helped me design a tiny drill press for my dremel drill. He helped me hardening and grinding fly cutters for cutting the rack and pinion. The dremel is long gone but the drill press still works.
Watching your videos remind me of him and a simpler time. Thank you Mr. Pete!
Sounds like you had a great shop teacher
Once again interesting video, your mention of Cincinnati took me back some 58 years when as a teenager I was part of a that install a lift in Cincinnati UK factory I was also fortunate in been given a work tour by the Forman. They had machines there that were not part of their catalogue they just produced the parts for the others and boy were some of them big.
Thank you for that information. I bet they produced a lot of specialized milling machines
Still great work, even thou I will never have a machine shop like yours, I can wish. Keep it going Mr. Pete.
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Good show Lyle. Thank you for all you teach us kind Sir. We love what you do and thank Jesus for you. NONE finer.
🙏🇺🇸
Thank you Mr and Mrs Pete
I know this operation is difficult and that's why I have been procrastinating on making a rack for a 9 inch South Bend lathe. But one day I will get it. Thanks Mrpete
That would make an excellent video, when you do get around to it Randy. Cheers, Craig
Lyle, thank you for this series -- I look forward to seeing the follow-up videos. I'm going to have to buy a set of gear cutters to fill in the missing spots in my partial set of change gears, but I suspect that I'll make more gears (& racks) than what my _old_ lathe needs. Seeing you do this makes me want to just cut some gears/racks. ;) Also, thank Mrs. Pete for the list of coordinates, especially since we've now seen her in Adam's Florida Flywheeler Swap Meet video!
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Good video as always.
Fantastic video. Keep them coming!
For some reason I always find gear cutting fastening. Thanks for another great one Mr. Pete, looking forward to the next part!
Kuddos to Mrs. Pete for being so tolerant, half her kitchen is in the basement, yet she still doesn't mind helping out! :o)
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Nice demo of cutting a rack. Enjoyable to watch on this snowy central Illinois day.
Thanks Lyle
That was a great video thanks. I was wondering if you couldn't have turned the rack around and cut the other direction to continue more teeth? Just curious.
Yes
Thanks Mr Pete.
Good information. If one wanted more teeth where there are obstruction limitations, note that if the workpiece is changed out end-to-end (at the 25:00 mark here), almost twice as many teeth can be cut. After "flipping" the piece, re-insert it into the vise and align a tooth with the cutter, then proceed to cut more.
Yes, I should have mentioned that
great video. that is something I have been wanting to try
Good morning Mr. Pete!
How long
Nicely done!
That was quite a hoist that you built! You think big, I think small. And you can see how far that got me, LOL
THANK YOU...for sharing. Fantastic video series.
Spacing the teeth exactly 0.157" here is only off by about 80 millionths of an inch (the correct spacing would be closer to 0.157080...). Since the pinion only engages a couple teeth at a time this error should not be a problem, so just stepping by 0.157 will be fine. This only becomes a problem if you want to use the rack for motion or measurement over larger distances where cumulative error would be a problem, so in this case, after 100 teeth (about 16") your tooth position would be off by 8 thou. This could also be a concern if the pinion were very large (hundreds of teeth) where you start getting more teeth in contact.
I think the chart you have is just stepping the exact value 0.157, and so is giving the same results as manual stepping using the DRO. After 7 teeth the error exceeds half a thou, so the chart should read 1.100 for tooth number 7, and the error accumulates slowly, ending with 4.71 (should be 4.712) for tooth 30. More notably, the tooth matching the DP (20) should have a position equal to pi (3.1416-ish) but is 3.140 in the chart.
Thank you. Possibly a little overkill for what I’m doing
Kevin Martin pi is 3.14159-ish
@@mattiase1876 Sorry, that was a typo, the "3.14116" should have read "3.1416" (and has now been corrected) which is the seldom-seen four-decimal-digit rounding of pi. I suppose I could have written "3.142" as well, and now I don't recall why I wanted another digit.
Thanks Mr Pete, I've learnt something once again from your videos. I really appreciate the effort that you put into these, must have been quite a lot of work to make that arbor. It also occurred to me that if you didn't have a mill you could possibly do that on a lathe. Using a similar arbor but with the cutter mounted in the middle, run the arbor in a collet and a centre. You would have to clamp the work somehow to the cross slide at the right height but it could be done. Cheers, Alan.
I spent two hours trying to see if I could set up my lathe With the milling attachment to cut the rack. I tried every possible position, at Cetera. It did not have the range or movement of the cross slide that would permit that area so I gave up. In fact that was the way that I originally going to do it
@@mrpete222 Well at least I'm not completely nuts for suggesting the lathe then 🙂 I was thinking that if you could somehow clamp the work lengthwise on the cross slide (in line with the arbor) you could use the carriage to position the work for each tooth and the cross slide to make the cut. I think the problem would be clamping the work at the right height and holding it securely.
Great video Lyle wish I would of had you as a teacher
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I stumbled upon the meaning of "tubalcain" while reading a good book last night by chance.
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Thank you for all that i have learned from you over the years
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Interesting 👍👍👍👍 thank you!
Wonderful Video Mr. Pete! Thank You Very Much!
Thanks
The arbor press you have as an example is like twice the size of the one I had to make at school. I also had to make an arbor for the gear cutters and I also made one to fit in a 3/4" collet
A wonderful job and kudos to Mrs. Pete for her assistance. Enjoyed as usual. Thanks, Mr. Pete! :-)
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Mr Pete, I learned something as always, Thanks.
Thanks
"Providence, RI?"
Interesting... Because I live a city over. I went to NEIT recently for a manufacturing and machining class. Best investment! I'm now a mechanic at a local manufacturer. The best part of my job? There is a Bridgeport and a lathe. Both need some TLC, and I believe that I came in at the right time to talk the supervisor in to requisitioning some funds to put towards said TLC. There are a few guys that know how to use said equipment, but not to any extent. It was mentioned that my supervisor wants to invest in a new lathe chuck, possibly a 6-jaw. Now that there is an employee interested and with a desire to take on a position involving this area, maybe I can convince him to make that investment. I may even be able to convince the company to send me back to school. I am confident that my instructor from NEIT would cosign my idea. As many can relate, this is a topic of passion, not just a job. At some point I will purchase a milling machine of my own. I am looking at a small Tormach, and a small to medium sized lathe. I look around and I see how 99% of what is there was at some point a project in a machine shop. I was introduced to cnc in 2006, and that was a wrap. While CNC is great! Manual machining is awesome!
Thanks for your inspiration!
What about making a rack on the shaper? Just a thought. Love gear cutting videos
I have thought about it
@@mrpete222 I'd like to see you make a rack on your shaper too
Very Professional mrpete. no such thing as a gear tooth cutter in my shop. would be using a single tooth cutter. I have made double ended HSS cutters, using existing gears to match up the tooth form. Gash it first with a slitting saw to speed things up . thank you for your classroom effort in our education. your dedication is obvious. keep up the good work !!
Thank you very much
I always learn something. Thanks for teaching us.
EXCELENTE TRABAJO!!!! FELICITACIONES!!!! UN ABRAZO DESDE REPÚBLICA ARGENTINA!!!
Nice new sweatshirt looking good Mr. Pete
Excellent.
Thanks for the nice video. Been meaning to get a set of gear cutters just to play with. I did grind a single point cutter and cut a few gears in aluminum that matched my lathe change gears. Much to my amazement they ran fine. But I put the steel ones back on. I'm an old retired guy, most of what I machine is just to prove to myself that I can.
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+1 Great Video Thank You for Sharing! This is s a very good demonstration of cutting a Rack!
Thanks
My cat likes watching your video’s with me.
lol
I know you probably can't hear it anymore, but I'd figure this would be a job for the shaper!
Grinding the tool would be similar to an Acme Threading tool, you'd probably get a better surface finish on the teeth faces and you wouldn't need such a long arbor to reach in over the workpiece!
Thanks for showing this, I particularly liked the flat spot on the right-angle drive for indicating. Saves a lot of trouble!
Great video. Thanks Mr. Pete
Mr Pete you look like the real slim shady
Happy pi day, Mr Pete! (3/14)
I just been watching some vids on cutting teeth like this one thing i was thinking why not make a bar for the lathe and use the cross table and have more room for more teeth cutting just a thought i had in watching a few with yrs! Keep up the great work!
thanks
Hello Mr. Pete, what type of steel did you use (or recommend) for the horizontal arbor that you made? Thanks!
I'm predicting I'll have a few hours to spend in future among all this Corona kerfuffle. I;m going to start watching your videos from number 1. Still in the process of restoring my Taiwan mill. Life will go on. All is not as it seems. Cheers and kindest regards to you and your family. Stay healthy old UA-cam friend.
Just another big news media hoax
On the money.
Like the right angle attachment, Tubalcain. Wonder if this could be done on a lathe with the arbor held between centers on the lathe and the work held in a vise that replaces the cross slide.
I ran across ; ) a free source of rack and pinions (usually in pairs) found in discarded tread mills (the type with an elevation feature). If your diligent in the harvesting of parts you can even save the pinion bearing and slot portion. Actually the treadmills are a cornucopia of useful parts, I used the elevator motor to power my bead roller.
Thank you, I will watch for one of them. Many of them do not have much use on them. People buy them with great expectations for getting exercise and losing weight. They look like lots of fun in the advertisements
A small shaping machine would also do the job.
At 28:29. The teeth on a rack are almost straight ! They are straight. That's what the pressure angle is. The inclination angle of the side wall in degrees from the vertical.
Another great video, thank you.
As the sides of the rack teeth are actually straight, could you use a tapered cutter (D-bit) to cut the teeth on the vertical mill? That would eliminate the length restriction.
Possibly
Nice job on the Rack.
Thanks 😊
Another great video. When will you upload the TIPS # 617 - How to make an arbor for a horizontal mill video?
How would you go trying to make a rack on a shaper.
I know it would taker longer but hey us hobby machinists have all the time in the world :)
Abom79, paging Abom79 ;)
I think Mr Pete has a shaper too :)
Thank another grate video.
Another key bit about racks is: You do not *need* competent thread-cutting or existing threaded materials to make (at least a crummy) one. Which makes racks one of the answers to "If you use lathes to cut threads, where could the 'first thread' come from?" A really bad "rack-based" thread-cutting lathe can make ... a better lathe.
Personally, I would like to see you cutting a rack or broach on the shaper? After all that type of work is what shapers were designed to do. That setup cannot be rigid enough for accurate work.
Those right-angle attachments for the Bridgeport are common enough that you'd think some bright Chinese toolmaker would start making gear cutter sets just a whisker larger than the diameter of the housing plus the depth of cut. I can't see chatter being a problem (or if it is, just make the body of the cutter thicker!), and I doubt if the cost would be vastly increased.
👍
One task where the shaper can allow making a longer one. My table can travel across quite a distance, but think work holding is where you are going to find your limitations on how far you can go without having to reset the work. The other issue is that my shaper has a rough time with straight down plunge cuts past .10 ... Steve Summers demonstrated a way to get around that, it is similar to the method used for single point thread cutting on the lathe. I've been trying to think of how to do the same thing with a round gear that isn't a complicated set up task. I think, in the end, it is going to come down to laying it out in the CAD program and letting it give me the numbers. That has always been a good way for me to remove the madness from a method, you might say ...
Yes, my shaper has the same problem. It was difficult if not impossible to caught an internal keyway. The tool dug in and the machine stalled
LIKE IT!!!!!!
The fire trucks I work on have a rack and pinion, not in the steering system, but in the vertical adjustment of the roof nozzle for aiming
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You mention several times that the rack teeth are almost straight. They are dead straight, this is the principle that makes the gear teeth roll on the rack teeth.
I'm sure you realize this already but you could double the length of rack you cut by turning the piece around and carefully lining up the cutter with the first tooth. You'd need to be careful about the length of your work piece for this to work.
the aluminum presses are good for cracking Black Walnuts.
Yes
Thank You Lyle...I was wondering. I was always taught to have the cutting force against the solid jaw of the vise as much as possible. I was wondering if you could have just flipped your cutter around and approach the work from the front to the back instead of from the back to the front ? Everything would be the same with the same results except the cutting force of the cutter would always be towards the solid jaw instead of the floating jaw...tm
Yes that would be a good idea. I was like that too, I just didn’t practice it today
If you reversed part , put cutter in last cut at depth of cut would that settup introduce unacctable error ? To make longer rack ?
Rofl... humble shop? 15,000 tools in the background alone on the wall lol. I have no idea why I watched the spot welder videos. Some how 3 hours after that I ended up here. Was the video I wanted to see to start with. Interesting anyhow!
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Could you cut a rack on a late assuming an x-y table to hold the material and having the arbor supported on both headstock and tailstock?
Yes, I tried to do it with my milling attachment, and I could not make it happen. Too many limitations
Do you have a video to do a self reverse scew?
Hi Lyle. This was very interesting, Thank You. Now, I don't really know how to use a 3D printer, but could you copy those Comparative Sizes of Gears and print out a set of gear gauges? Then next time you go down to the school, get the boys to cut out some as a "Technical Development Lesson"..... :)
Good idea. I think they would have to be rather large teeth.
Enjoyed the video. One comment, I think you are doing McMaster Carr a disservice when you threw out the $50 shipping figure. I've always found McMasters Carr's shipping rates to be very fair and seriously doubt they would charge anything even close to $50 to ship a 24” rack.
Mr Pete, during this unprecedented crisis, as our youtube shop teacher can you recommend materials that we can use to do introductory shop for our grandchildren? Maybe even start a series for us?
Not really, but I think the best thing would be to show them elementary woodworking skills. There are probably lots of videos on that. Make a birdhouse, build a model, and fact, show them all the things that we did when we were kids. We had no TV no computer no idiotic Nintendo’s.
I've run Bridgeports and many other vertical milling machines but haven't any experience with the horizontal attachment or right angle drive as you put it.I'm actually surprised I'm not familiar with it!
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So a shaper or slotter can be used to make a long rack. Bridgeport model e and a dro, done.
Another very helpfull series, even though its only the first video, your series always are. What keeps you motivated? Lately I have almost stopped working in my home shop in favour of watching many youtube creators like yourself, I always say to myself thats an interesting project or I need one of them but very few actually get made because something else comes out in another video and away we go again. I think I need to stop watching as lately(last 6 months) I feel more adicted to watching than actually doing, hence my question, has it ever happened to you and if so how did you get over it and back to the doing. thanks, DG
What you are experiencing is a common phenomenon. I am guilty of it myself. I watch about 20 videos per day. It is always easier than actually working. That is why how to do it books, and how to do it videos are so popular. Some people, Would rather watch a video on fishing, then to actually go. They would rather watch golf on TV then actually go to a golf course, and the list goes on. I’m cracking myself up telling you this
Very informative video...but for some reason, it's made me hungry for ribs..!
lol. I am always hungry for ribs
I am need this book black book bless.
Would you show how to make an 8° drill for er16 collets.?.I.want to store 20 units...thx for all your videos..
I must have 60 cutters that came in the estate sale. I have no idea what to do with them. I feel like I need to make a clock.
Yes
Man, that is weird! I've been watching your old videos, and you weren't on video, only your voice was on audio.
I'd say you weren't who I imagined, but I can't picture who I imagined, I guess that voice just isn't supposed to come out of a person!
Homer Simpson called it a rack and peanut. M
lol
gear cutters are different than the other milling cutters (plain, side, end,face,......) right??
Yes, as long as you resharpen them in line with the centre, ie. no front rake, or the resulting gear will have the wrong shape.
what is the gear ration on a rack and pinion? is it one to one?
Nice project Mr. Pete. I'm looking forward to the rest of the series. I have a question about gear pressure angle that you didn't cover. Suppose you need to make a gear to mesh with another gear or a rack with an unknown pressure angle, i.e. "is it 14.5 degree or 20 degree?"; is there a way to determine pressure angle in the home shop?
The pressure angle comes from the rack. The inclination of the wall from the vertical is the pressure angle, so a 20 degree rack has a 40 degree vee. That's what pressure angle means.
@@peterrhodes5663 That makes sense, I hadn't thought about it in that way. I suppose a piece of 20 degree rack would be handy to check PA but one would be needed for every pitch you might come across. Perhaps there is an inexpensive set of gauges that mimic racks of various pitches which would help determine PA of an unknown gear
@@pyromedichd1 If you research the button tool that is used to make gear cutters, then you can measure your unknown gear angle, using the same calculations. 20 degree ones look chunkier than 14 1/2 ones. If the gear is not off some ancient peace of equipment, or a lathe, then it's probably 20 degrees, simply because they are stronger.
Look up Eureka tool if you don't understand the above.
Would it be possible to flip the rack (assuming it is short enough), and sync the cutter in the first tooth you cut and make the rack almost twice as long?
Sure
But when the clearance is an issue, why not use the fly cutter with HSS with the right profile?...
That has been done. That is in one of my other videos
Great job thanks only I wish to know what time of metals you uses In the arbor an others proyects because I want to make some stuff to thanks 🙏
1018
So what is the rack for?
Just buy tool steel aneal then turn your own gear cutters on lathe or even in drill press then temper and sharpen.... or cut tools for a fly cutter that can breed used in a drill press ....tolerances are dependent on the operator not the equipment .... also I have made racks very slowly using a feed table (al la hand driven shaper like )to cut using the feed handle to provide each cut only remove very light cuts took a long time manually but got er done.... using a tool ground with dremel to my needed shape.... each next tooth was indexed off the previous tooth....I grind cutters from small saw blades from the home despot.... the way you think spoken out loud isn't wasted time
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Is it necessary to have a drive key on a gear cutter arbor?
I did have a drive key Not sure I mention that. I happen to think it is necessary
I would like to see one made on a sharper
Possibly coming soon
Tubalcain,.... What would I do if you & Others haven't made so many videos to cover so many different subjects? I have an 8 inch horizontal vertical rotating table! And guess who is teach me how to use it by way of UA-cam video? Thank You so Much!
Thank you
mrpete222 index plates are in my future! It was disappointing to see that you didn't get yours to fit: so you had to make one. I was thinking/hoping it would be just that simple for me. Man I hate math of all kind!
@@bernarditaylor7593 the formulas for the x/y hole coordinates for a circle with radius r and n holes are in the comments on one of the index plate videos - just plug those into a spreadsheet and you'll have a list, like the offset list in this video, in no time...
Edit: added dropped 'l'
Thank You!
@@bernarditaylor7593 Bernard I Taylor if you want a bssic Excel file, give me a shout by mail to mylastname at Google's mailservice. Currently does up to 71 holes but easily extendable y simple dragging. Could probably do with some rounding of the results as well aspiring researcher than selected number of holes...
Why would there be error introduced by zeroing for each tooth compared to using the chart your wife made?
The scale and the display are almost never the same resolution so there is some conversion and rounding. If you zero on each tooth that can add up. For most things it does not matter but once you have worked on jobs where it does you tend to try to eliminate any errors you can in everything you do.