Making Modifications to a Stock Boston Gear
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- Опубліковано 5 січ 2020
- Making some modifications to an off the shelf stock Boston Gear to replace a vintage gear on an old machine. The thickness of the hub had to be machined to the correct thickness on the metal lathe, the hole bored out to a larger diameter, a keyway broached in place, and a hole for a set screw had to be drilled and tapped.
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Time to adjust the ram in that arbor press.
I was more wondering about the table tilting down under pressure. That looked to me like most of the problem.
Yup going to have to tighten up the slide on that ram or there will be something broken in the future pressing on it. Way too much movement. Funny how well stuff like that shows up on video when you can barely notice it in real life.
@@bcbloc02 yes I was waiting for that thing to snap
Mr. Wilton, I looked again at the ram in relation to the lalthe handle behind it. The ram is moving all over the place. The table is flexing a bit as well, just not to the extent of the ram. I may have to install a camera in my shop so I can spot similar issues!! bcbloc02 made a good call.
What I was going to say has been said before. Thanks for your videos Kieth
Noway eh!! Keith is the machinist par excel lance, Thanks for the video
I think another video on sorting out the play in your arbour press will be coming soon, nice video though.
Al.
Did anyone else cringe, when that broach started bending?
yes, didn't like that
And when it hit the concrete...
I saw that happening and looked away waiting for the sound of the broach snapping into many smaller pieces.
Yeah, right at crotch level
Is the Arbor worn out? That side movement didn't look good.
We used to do a LOT of push broaching, in the manufacturing firm I work for. One thing we set up for that process was a wooden box with a considerable stack of the 'old red shop rags', to catch the broaches as they fell thru.
Just sayin'
Ken
I noticed in his videos from years ago, he let stuff just fall from the press onto the concrete floor. Doesn't look like he's interested in good advice from professionals like yourself.
Kieth, I think you might want to see about getting the ram in your press tightened to run straight.
Good to see you making something from a like item instead of from scratch.
ALWAYS INTRESTIN, SURPRISED THE PRESS HAS SO MUCH DEFLECTION IN IT
I think that's the first time we've seen that lathe in action. Seems like a sweet little lathe. As others have said, you're lucky you didn't snap that broach.
I can hear Renzetti and Goettswinter cringing at that drilled hole in a 3J😬. Kieth is a get ‘r done kinda guy. I’m sure it will work fine and the owner will be very happy.
I really enjoy all of your videos but my personal favorites are the ones where you are helping someone out with a project. I also love seeing the tools I have watched you rebuild/restore put to use.
Glad to see you still have time to help out your viewers.
Locking forward to see a video where you fix your press
Boy, I'm sure glad you turned the position of the broach! I was screaming at the computer screen to warn you of the angle the broach was approaching. Whew!
You'd think he would at least raise the bar to release the broach from binding.
@@Craneman4100w , he saw the danger as it was happening and changed the position of the broach so that the broach could be used with less peril to the broach. I'm sure he realizes he's going to have to work on the tolerances on his press so that there won't be so much side ways pressure.
Very cool. Thanks, Keith!
Keith,Aways looking forward to see a new video.Big fan from Belgium.Rudy
THANK YOU...for sharing. Watched and very much enjoyed.
Nice job.. quick and easy ... but the arbor press had me pretty nervous. Thought that broach was going to snap.
Your arbor press called, she's on the loose! As always enjoyed your vid Keith!
Happy New Year!
Thanks Keith
Great work. Thank you for sharing
Happy New Year...!!!
Keith, Nice job thanks for sharing.!.!.!.
Thought about taking a machining class just for personal information but found they do not any longer do things the "old way" I like the style of machinery you have and simple "Non computerized" common sense solutions you portray over the overpriced CNC type work pushed . I enjoy your style as many other practitioners of machining over the new ones , so thank you and all you "Old-pros" knowledge and patience to teach. An old welder....
Industry just wants CNC operators who can babysit enormously expensive, high throughput machines used in manufacturing. The market for people capable of repair work is relatively tiny.
@@5tr41ghtGuy That's totally untrue. The market is in desperate need of skilled tradesmen. There's especially a need for skilled machinists because all the skilled/smart machinists are getting old, and the kids who are smart/intelligent/intuitive are doing other things like university, and are taking desk jobs. There is a huge need for them in the machining sector. And the notion that you can be a CNC machinists without being skilled is completely wrong. Go take a look at Peter at Edge Precision. His job is the one that's most in demand. He's semi-retired and keeps a couple of his machines at his machine shop that he sold. So his generation is on the way out of the industry. Same goes for most other trades, from plumbing, to electricians. There's an over abundance of unskilled labor.
@@xenonram your not watching a skilled machinist....
your lucky your so far away or i would be hanging out with you all the time. just love watching you make different thing.
Thank you Keith.
Nice little project!
Keith- a very interesting job =thanks
i just picked up a reed prentice lathe. hope to use it to make some parts for some of my antique construction equipment
I can't believe you bored a finished bore with a drill bit?
Nice project
Boston Gear will modify their stock gears at a very reasonable cost and lead time. Ask your distributor
to get a quote from Boston. They are located in Charlotte, NC.
Kieth, buddy, Lord! Adjust the 2 screws on the front cover of that press! Damn you were killing me. Also a pointer.....drive the broach by the back of the ram where the rack teeth are, the forces will be more lined up, and for heavens sake lube every pass and especially the back of the broach. Also, up here in the pucker brush we never finish bore with a drill on ANYTHING.
I don't know what I'd do if I didn't get a video from you every week. Thanks, and I was going to comment on the "slop" in the arbor press but looks like you have enough of those. Ha Ha
Happy new year Keith!
Nice little project to start the year with.
Thanks for sharing,
Cheers
I practically had my hands over my eyes when I saw that broach flexing like that! Scared the crap out of me and I'm not even there.
I agree that it would makes a good video if you made and installed some captured wear/guide plates to true that ram up.
Good video!
Yes BedsiBob, I cringed, I have never used an arbor press or a broch but I know a bend when I see one, YIKES that could have snapped. Great video Kieth, as a woodworker I watch what you guys do in metal and am amazed.
I was wondering how long you would ignore the deflection in your arbor press bending the broach before you mentioned it and redid the setup. Level 6 pucker factor. Looking forward to you re-restoring the arbor press to fix that terrible deflection.
The ram on the dake press needs a little adjustment too much slack I think that's what is causing the deflection in the broach best regards Alan from the UK
Nice, I thought the broach was gonna snap.
I thought that broach was a gonner! LOL
Nice little job Keith. I can't help but wonder if the person you made this for couldn't do the job because of the key way. He has a lathe. You found him the ready made gear solution from Boston Gears, without a broach or a shaper it would have been normal to cut the key way with a hacksaw and a file, but, today, people who haven't manual training wouldn't even think of it! Regards, Matthew.
@@lwilton It's a pity that you didn't learn basic hand tool work, it can get you out of a lot of problem situations! If you decide it will be botched, then it's going to be!
@@lwilton Who was talking about beating techniques into anybody? If you don't want to work by hand that's not my problem! My idea was to let people know that this can be done by hand, just not many people think of it. I repeat, this can get you out of a difficult situation sometimes.
@@lwilton That is a change gear for threading, so if he was restoring his lathe, that job could have been done last after the machine was assembled and running- very odd that a guy with the ability to restore a lathe would need to send that simple job out to someone else.
There's a lot of assumptions going on here. We don't know what this gear is used for. (Recall, Keith said he wasn't sure.) Maybe he wanted it broached rather than spending an hour or two with a file and getting a crappy fit, or spending several hours with a file and getting a great fit. When Keith can spend 3 minutes and push a broach through. Maybe he's an older fellow that prevents him from doing fine file work due to a disease, or eye sight, or just old age. Maybe he's a young fellow that suffers from one of the first two aforementioned afflictions. Who knows. There's often a reason something's being done a certain way.
@@xenonram Well, you certainly added a few more assumptions to the list. From the number of comments, it seems a lot of people are asking why a person outsourced such a simple job- maybe the owner of the gear could post an answer.
Folks would call that ram "clapped out" in my neck of the woods.
Sad thing is that he just "restored" that press.
With your skill at machine work I would have thought that you can make a broach insert to match the hole size as well as the broach. Great videos, all the same, keep them coming
Of course he can. It's easier, comes pre heat treated, and cheaper (when you value your time, the cost of the material, and heat treating). And he might not have had time to do it. You know he has a regular corporate job as a Bayer crop scientist, so his free time is limited.
While the looseness of the arbor press has been discussed, wouldn't it have been better to bore the hole to size after indicating the hole true?
Thanks Keith. The ram of your press was rocking a lot front to back - can you adjust your press to remove the play?
Please take care of yourself, Keith,. Light duty broaching should not cause heavy breathing.
I have found while making videos that microphone location can make normal breathing sound excessive. Like when your mic is on your chest and you're looking down. Not sayin' you shouldn't take care of yourself...
That press has problems :/
I think the thin section of the gear aggravates the broaches bite so that it is drawing in too much.
Observations on my part: CNMG insert would have been a better choice, rough drill the hole and then bore, arbor press ram requires facing on the end to square it up and the ram requires adjustment of the gibs to tighten and true up the stroke.
JIM
Keith - The chuck brake on your Rivett lathe does not sound right! Several other UA-camr's use the same kind of lathe and they do not make the same amount or kind of noise when stopping the chuck.
I noticed this as well, something definitely sounds off to my ears.
nice video broo
Nice job Keith, came out great.
After reading the comments 13:00 is what you are looking for!
Why do so many people NOT have something underneath the press to catch the pressed out item? A concrete floor is not kind to metal.
Kieth, get a shallow box with some cardboard or rags in it to put on the floor under the arbor press to catch the broach. Letting it fall through onto the concrete floor and you are likely to have a compact two piece broach... ask me how I know this.
At 15:05 I am sure that Keith cringed a little when the broach got loose and bounced on the floor. Been there, done that. Under my arbor press I now keep a bucket with a towel in it to catch falling things.
Hiya Keith
I've watch so many people broach key-ways in all types of things. Have you ever broken one broaching an item? Seems like they take a heck of a lot of straight down force, but any side or off-set force looks pretty easy to snap one.
i am sure you will get a lot of comments on drilling the gear. i assume that this gear is probably a change gear that needs a little more clearance on the bore and the key to enable a hand install and removal.
My father was chief engineer of military vehicle design at PACAR. In 1968 the girl down the street was foxy. Her dad worked for my father designing gears. My father told me to buy gears from Boston Gear and don't waste time designing or building them. I didn't tell her that.
That drilled 9/16 hole didn't look very professional, run out of reamers or time?
not a machinist but was thinking the same thing. At least indicate it to make sure the gear is centered, and not just trust the chuck. Facing is one thing, boring is another. I assumed either reamer or boring bar.
Fits right in with the less than precision measurements on the width. "It's close...that's good enough."
@@AffordBindEquipment if it's off center a little, the drill will flex and "find" the center. As to the tolerance, it's a keyed shaft with a set screw that's going on a lathe. It's not a piston cylinder.
He tends to be a bit of a hack when doing his work. There's no way the drilled hole was as good as boring.
@Philip Crow: Well, that's a good excuse for doing a shit job. I won't be hiring a hack like you anytime soon.
I think you should tighten the gibbs befor you break a broach.
Ok, we get it. The press needs adjusting.
I was cringing a bit seeing that broach bending.
If you position the broach so it is under the back surface of the press's ram, rather than under the center of the ram, you should get less of that deflection. The force applied by the pinion on the ram's rack should be in line with the half-depth of the rack teeth, so by positioning the broach this way, the torques from the pinion and from the force on the broach should balance out and not try to rotate the ram.
I was also cringing, but I think us preaching to Keith is a little like trying to teach your grandma to suck eggs.
@@graymouser1 I agree and also I have have seen no (to date-I am a new fan) of Keith answer any questions. Strange.
Teaching Grandma to suck eggs sounds pretty rude!
Perhaps my comment should have used "one positions" instead of "you position" and "one should" rather than "you should" so that other viewers of this video might realize that my advice doesn't just apply to Keith.
@kevin Martin It's an old expression, and it implies grandma already knows WAY better than you.
another video on sorting out the play in your arbour press will be coming soon,
Your ram being loose exacerbated by the distance you had to extend it to make contact made me cringe at the thought of that broach breaking and popping out and injuring one of your legs. A good video of surface grinding 3 sides of the ram and putting in new shims would be great.
Who else was yelling "tighten your gibs" at their computer screens as you watched that broach almost break?
What no bucket of sawdust to catch the broach? Did you hear that ping?
I guess the difference between being a professional and an amateur, is I would have broken the broach.
Didn't you have an American Pacemaker lathe that you were repairing? Is that a new gear? Pretty crappy fill on the casting around the holes.
Why did you not put the set screw hole dead center over the keyway slot. I don't ever recall seeing a set screw lock into the shaft instead of the key. But then what do I know?
If you recall, he's duplicating a part, and he said the original had the set screw 90° apart.
@@xenonram I did not catch that in the video. Thanks for correcting that.
I wonder how he finally fixed the RPM indicator on that lathe?
As I recall he sent it out to a speedometer shop. There used to be a lot more of them before electronic speedometers became the standard.
Um, time to take a shim out of the arbor press ram? Ram a bit sloppy?
Does your nice Rivett lathe mean that you won't be restoring your Monarch 10EE?
Not liking the drilled hole compared to boring it to proper size, but whatever works I guess.
A coat of Paint doesnt fix all that this particular Arbor Press needed or so it would seem? better get to looking further into that one, I was cringing and panicking watching that Ram flop around and bend that little broach!!!
did the keyway need to match the gear teeth on the original?
good question.
Let's hope not
I seen were a guy puts a bucket of rags to catch the broch.
Yes but that implies a certain degree of forethought.
@@jonka1 ha ha
I knew you wouldn't have the right size bushing.
I didn't like how the ram of the arbor press was bending and stressing the broach, either...I was waiting for it to snap, actually
oops, I see I should have read thru the comments before adding my own...
Your arbor press needs some work to remove the Play
hello it would be fun if you show your tools that you use and it will give you content to film thank you a listener who likes to watch you
Note to self: Boston gears are pretty cobby. Hopefully that one came from the factory rejects bin.
That was not one of their better castings. It looked like something from China.
That press needs adjusting to take the slack out of it.
Music to shim a ram by:
ua-cam.com/video/m6JbemSdORo/v-deo.html
Keith- That Arbor press has guides for the ram that have to be tightened.
You almost exploded that broach ! (but i'm sure I don't have to say this).
You probably can't see that from your angle.
Rams way to sloppy lucky you didnt shatter the broach
Why would a guy with a lathe need to send this simple job to Keith? And why drill the hole- should have been drilled and reamed- you can see the broach bushing fits loose in the hole.
Just a thought but perhaps the lathe is in pieces awaiting a new gear?
@@littleworkshopofhorrors2395 That is a change gear for threading, so if he was restoring his lathe, that job could have been done last after the machine was assembled and running-
@@oldschool1993 i bow to your greater knowledge of charge wheels, but that doesn't stop the rest of the lathe being in pieces. Just possibly he needs to screwcut a part to make the lathe usable?
@@littleworkshopofhorrors2395 Hmmm- not sure how this gear would help him screw cut a part if the main spindle and chuck are disassembled- if the main spindle and chuck are functioning, then he could have done the gear work himself.
@@oldschool1993 just thinking off the top of my head. How about he doesn't want to use the lathe till everything is perfect. I knew a chap once who rejected a lathe because of a minor spot of rust,takes all sorts.
Why not use a rust removal laser for removing rust?
I was disappointed in the 'finish' of that Boston Gear. I would expect such a poor casting from China, not Boston!
Gee whiz you guys! He’s probably doing this for free and actually needed to buy a part to complete the job. Give him a break, this was not a precision job.
yikes... i was cringing the entire time you were broaching and the press was wobbling everywhere.
Didn't like anything! 👎