Extruder Screw CNC Milling Step 1 Roughing
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- Опубліковано 14 січ 2019
- Finishing Video • Extruder Screw CNC Mil...
Very interesting and new type of part for me. Learned a lot on this cool screw. As you can see the customer supplied an old damaged screw without any print let alone a model. So step 1 was to reverse engineer the old screw and make a good model. Did all my modeling in Mastercam. The screw has an angle and took a bit of designing to get it right. Step 2 for this job was to run a black marker in the spindle to make shape was correct and in the right direction, much easier to erase the marker just in case instead of welding it. Step 3. Rough the shit out of it. Used a 1.0" cutter with a 1/8" corner radius. the tool performed great.
Next video is the finishing.
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Thanks for watching. - Наука та технологія
Really enjoyed the longer video this time, thanks for sharing.
Excellent Work.
Very nice!!!
I understand your machine is more ridged locked spindle, lots of material stress, you need extra for finish pass, very interesting video I like your machine.
How did you can this out? Pockets rotated around the shaft at 90deg increment? Mold?
I like that marker trick. I made one myself too, except its spring loaded hehe.
why is it done in 2,5D first?
Advanced rotary toolpath by Mastercam would eat this part for breakfast. 1/2 the machine or less with exact same DOC and SFM.
This I agree with. These days I would run this totally different. I like your commentary, give me more if you got it. Interested in what you say about my other videos.
could you help me to program a 6 pitch spindle on dossan 2600 lathe without tool driven. thanks
Is there a reason you dont rough it with the 4 axis turning like threading with the milling cutter. I made a billet crankshaft on a manual mill and I roughed it out with a powered 4 th axis.
0:15 That's a strange tool... oh!
Glad I wasnt the only one
try reducing cycle time, by taking more aggressive cuts... your tool can handle from my point of view at least 1.5 times the load, or more (you need to try this out). You also go for a lot of unnecessary movements... So try to cut those out. And while roughing use the lathe axis!
Great video, looking forward to part 2. Also is the lower turret supporting the center?
Yes helps a lot.
I need to make one too but what program did you machine? Fusion 360? thanks
I guess I am surprised you did not turn the work piece like a lathe and so.
Thanks
Too much material to remove, also too much time programming. This was a simple and safe 3-axis 3-d milling toolpath. Keyword safe. When you add a 4th and then a 5 axis movement you lose rigidity.
I would have screw cut it using a CoroCut QD 8 mm tool. Used the spindle for the tool holding and offset it at the lead angle. Use a canned cycle with offsetitng for each pass on longitudinal and depth or have the pass as a macro and then a list of calls for each pass
Simply threading program with a changing z start using a button tool would have done this better and easier. Minutes to program at the control no need for 3d anything really. Nice concept all the same
I usually mark up with a Sharpie in a collet haha 🤣
Best way not to fucking it up before you start. Simulation is still only virtual. This shit is physical once you cut it there's no reset button. Gotta use all the tricks. Thanks for watching and the nice comments.
@@zalamachineshop you are welcome. I love watching your videos. Always makes the best from what you got. Love getting inspired to push boundaries in machining.
Super
Si muy bueno yo hice uno pero con un torno convencional 😸ua-cam.com/video/a7N8PLre9wI/v-deo.html🤘😸
Man that roughing would have looked cool with a helical tool path and a high feed mill... you could also probably get away without a semi finishing op.
nice job
but why haven't you milled it continuous like you've done it with the pen?
My finishing operation is sort of like that. For roughing this way with the spindle clamped is much more rigid. I could go much faster without the machine shaking or part vibrating.
@@zalamachineshop ok good to know
hadn't thought that this small diameter cutter would generate that much force. thanks
and keep on going with this awsome work.
Impressive reverse engineering. Please post start and finish weights in your final video of this part. You made a lot of chips here for sure!
How long does it take to use a CNC machine to make an extruder screw like that?
Usually much faster with the right machine and tools. This was a repair job and not at all standard for us. Slower than I wanted it to be but got it done and customer was very happy.
@@zalamachineshop if in my workshop almost 4 - 5 working days maybe even more than 1 week, depending on the length and diameter of the screw, because we still use makeshift tools and use manual lathes.
thank you guys for the comments
greetings from Indonesia
Can I ask why you wouldn’t do this on a CNC lathe? Rather than a mill
This machine is a lathe/mill, it has twin spindles and a milling head. The way this has been programmed is not ideal at all.
thanks for clearing that up, i was thinking it was a rotatory chuck on a mill, but yeah if it is both definitional a bad programmed :l
good ol' indexable sharpie. lol
Wouldn't start my day without it.
Awesome video and part, what was the cycle time on that roughing op?
It was about 50 minutes per side so 3 1/2 hours total. Finishing took much longer
@@zalamachineshop nice, how many inserts did you use
Used only two inserts total. 4 edges.
@@zalamachineshop that's pretty impressive, when's part 2 coming?
Вы по аккуратней, так можно и маркер сломать.)
Can u share the code for this type of milling?
Why would you want it, it’s awful
Why dont use live center?
Spindle freely spins when I set it as a tailstock. No need for live center.
@@zalamachineshop
In this case, how much the pressure of tail stock is applied
Is this an auto-generated toolpath? I notice with a lot of CNC toolpaths that the tool spends most of the time not cutting and between cuts retracts from the work when it doesn't need to. A lot of time could be saved. However, thanks for uploading!
Doing just 1 piece sometimes getting it done is more important than saving every second. If I had 1000 of these to do it would make sense to spend lots of hours in getting an optimum program. With 1 piece by the time I figure out the most efficient tool path I have the piece done and I'm moving onto the next challenge. Thanks for watching.
@@zalamachineshop that is a very good point that I hadn't considered! Sorry by the way, I didn't mean it to come across as a criticism. Thanks once again for taking the time to upload and for the reply.
@@user-yv5mt9rm3d Looks like rest roughing with area milling? There are not many optimization options for the sorting of cuts. Notice that some times the tool path starts from the outside, sometimes helical ramps, then when it comes close to the shoulder it just plunges. These are all related to the actual " tool path engine ". There are alot of steps MarTool would have to take to fix these deficiencies.
Yes sir
INEXPERT I THINK I WOULD HAVE USED A VOLUMILL PROCESS WITH A TOOL OF 1/2 OF 5FLUTES WITH A SDMALL RADIO AND A DEPTH OF 1.2 AND ROTATION GENERICO
This program is unnecessary increasing machining time...if its me I would hve program in helical or spiral...
🤦
Its hard to take you seriously as someone who would program this part in that ridiculous suit
ua-cam.com/video/bN_lUO1fMzA/v-deo.htmlfeature=shared
Germans couldn´t have done it better ;D
Even the chinese could have cut this better. Terrible performance
Очень много холостых ходов, программа нуждается в оптимизации.
Я согласен, но в этом случае я лучше закончу работу и перейду к следующей. Это всего 1 штука. Не хотелось тратить слишком много времени на оптимизацию программы только под одну.
@@zalamachineshop Ну да, вы правы, если одна деталь то не стоит оптимизировать.
Hi
How are you dear
Could you like to help me??
I want to make this screw by cnc machine
Would you like to share me soft ware and code
You must hire a good programmer. Or if you are good figure it out. I did it in Mastercam after years of practice.
why don't you finish machine each section and move on to the next? it will save time by not having to rapid between section on each peck.
Mantab bang....salam satu pahat ...salam kenal mojokerto jatim menyapa ...saling dukung ya bang...saya pemula...semoga anda selalu sukses AAMIIN..
Ahli mesin muda untuk menjadi ahli mesin Anda harus pergi ke toko dan mesin setiap hari. Untuk menjadi hebat, Anda harus belajar setiap hari dan terus menantang diri sendiri. Semoga berhasil, teknisi muda saya.
@@zalamachineshop siap
I didn't understand why not use the machine like a lathe.
Variable angle and pitch.
Lots of air cutting, wasted motion, and unnecessary plunge cutting.
Nice job, but I look at all those moves not cutting and think: lost money.... I realise that you have your reasons, but I wouldn’t do it that way, all reasons considered
Sure I understand. But in a real world sometimes you sacrifice machining time for programming time. In the end I saved money not optimizing this program. Again only 1 piece. Thanks for the good constructive comments.
Many unnecessary movements imho
Yea you are right. This was a 1 piece job didn't have enough time to make the program perfect. If I had more of these I would get my program dialed in.
Is this poor programming or poor software? Unnecessary amount of lifts and the entire job cut by level.
Many a ways to do jobs maybe a bit lazy but I sacrifice programming time to machining time. All while I've got 6 machines running all times with my team that is.
That's what I am ALSO thinking...why not to mill in helical way?
Ultra ugly trajectory ... it looks like when I used powermill .... LOL
Holy hell the programming is awful on this. Must be conversational lmao
Nah this has to be a bad CAM suite.
Very expensive and stupid way to shape this extruder
"Sometimes you gotta pee with the penis you have not the penis you want" we say in America. In the real world sometimes we are limited to the tools we have on hand not always optimum but if customer pays the right price I do the job. I know there are specialized machines that would knock this out in 30 min. I just don't have that machine. Plus it's only 1 piece.