Tegheim - Home made 4 rotor Wolvo 142 - Page 18

Mitchocalypse · 07-18-2012, 07:30 PM

words cannot describe how impatient i am about this

GySgtFrank · 07-18-2012, 07:49 PM

Quote:

Originally Posted by Mitchocalypse

words cannot describe how impatient i am about this

Patience grasshopper. CNC'ing an entire car from scratch takes time.

Tegheim · 07-19-2012, 04:09 AM

Quote:

Originally Posted by Raksj04

Could you put something next to those so we can get an idea of how big they are?

Ofcourse, later

They are 90mm long, and the thread is 65mm.
The thread is Ø20mm with 1.5mm pitch (M20x1.5mm)

RICE RACING · 07-19-2012, 04:48 AM

Quote:

Originally Posted by Tegheim

Why not? What else could I've done?

When I was an apprentice in fitting and turning if I did not use a 4 jaw chuck on anything but "bright" (ground or machined) bar stock I was kicked in the ass

NOTE: If it not my machine, and I am in a hurry I too like you abuse a 3 jaw on black steel lol.....

Tegheim · 07-19-2012, 06:47 AM

Then I'm going out on a limb and say it's bullshit

We use 3 jaw in our CNC-lathe, and all of the other manual lathes.
The only reason you want to use an 4jaw, is when to centre something that isn't at centre by it self if you know what I mean. But then we are talking 4jaw invidual.

I have worked in workshop for 10years, and have never heard of that you're saying

My "mentor" in lathe, have 25 years of experience, and have never done otherwise either.

You may have right, but they who learn you that, must have ment something else? For what reason?

Tegheim · 07-19-2012, 11:26 AM

Step1 done, someone asked how big they were, so... Pepsi

Force13b · 07-19-2012, 12:35 PM

I'm not sure i can express how happy i am every time i see yo have updated this thread.

Tegheim · 07-19-2012, 12:39 PM

Lets be happy again then

Tegheim · 07-19-2012, 01:23 PM

Tegheim · 07-19-2012, 02:54 PM

RICE RACING · 07-19-2012, 04:25 PM

Cause the parts are not round perfectly and the three jaws tighten on a common scroll/worm what happens is it stresses these, its basic theory, this is why on black steel you never use a three jaw chuck. Every workshop I have ever been in has been the same.

I agree with you and your boss though

I basically never myself use anything but a 3 jaw

regardless of it being black or bright bar

Tegheim · 07-20-2012, 08:49 AM

Thats maybe what you are going to fabricate. When we have low tolerance on the roundness, we turn the chuck with 3-jaw first, then clamp our parts.
Almost any CNC-lathe I've seen have only 3-jaw-chuck.

Tegheim · 07-20-2012, 11:43 AM

Have started to modify the A-arms I had for the old setup.

Before and after

Tegheim · 07-21-2012, 05:41 AM

New day, and the front suspension goes on...
Weld-nuts! Easy made in a manual lathe!

Tegheim · 07-21-2012, 05:38 PM

07-18-2012, 07:30 PM	#256
Mitchocalypse Rotary Fanatic Join Date: Jun 2012 Location: Edmonton, AB Posts: 179 Rep Power: 13	words cannot describe how impatient i am about this __________________

07-19-2012, 04:25 PM	#266
RICE RACING Don Mega Join Date: Dec 2008 Location: Utopia Posts: 1,688 Rep Power: 18	Cause the parts are not round perfectly and the three jaws tighten on a common scroll/worm what happens is it stresses these, its basic theory, this is why on black steel you never use a three jaw chuck. Every workshop I have ever been in has been the same. I agree with you and your boss though I basically never myself use anything but a 3 jaw regardless of it being black or bright bar __________________ www.riceracing.com.au Worlds best Apex Seals Coil on Plug Water Injection ECU Calibration

07-19-2012, 06:47 AM	#260
Tegheim Rotary Fanatic Join Date: Feb 2011 Posts: 210 Rep Power: 15	Then I'm going out on a limb and say it's bullshit We use 3 jaw in our CNC-lathe, and all of the other manual lathes. The only reason you want to use an 4jaw, is when to centre something that isn't at centre by it self if you know what I mean. But then we are talking 4jaw invidual. I have worked in workshop for 10years, and have never heard of that you're saying My "mentor" in lathe, have 25 years of experience, and have never done otherwise either. You may have right, but they who learn you that, must have ment something else? For what reason?

07-19-2012, 11:26 AM	#261
Tegheim Rotary Fanatic Join Date: Feb 2011 Posts: 210 Rep Power: 15	Step1 done, someone asked how big they were, so... Pepsi

07-19-2012, 12:35 PM	#262
Force13b cxxxx\|::::::::::::> Join Date: Nov 2009 Posts: 315 Rep Power: 16	I'm not sure i can express how happy i am every time i see yo have updated this thread.

07-19-2012, 12:39 PM	#263
Tegheim Rotary Fanatic Join Date: Feb 2011 Posts: 210 Rep Power: 15	Lets be happy again then

07-19-2012, 01:23 PM	#264
Tegheim Rotary Fanatic Join Date: Feb 2011 Posts: 210 Rep Power: 15

07-19-2012, 02:54 PM	#265
Tegheim Rotary Fanatic Join Date: Feb 2011 Posts: 210 Rep Power: 15

07-20-2012, 08:49 AM	#267
Tegheim Rotary Fanatic Join Date: Feb 2011 Posts: 210 Rep Power: 15	Thats maybe what you are going to fabricate. When we have low tolerance on the roundness, we turn the chuck with 3-jaw first, then clamp our parts. Almost any CNC-lathe I've seen have only 3-jaw-chuck.

07-20-2012, 11:43 AM	#268
Tegheim Rotary Fanatic Join Date: Feb 2011 Posts: 210 Rep Power: 15	Have started to modify the A-arms I had for the old setup. Before and after

07-21-2012, 05:41 AM	#269
Tegheim Rotary Fanatic Join Date: Feb 2011 Posts: 210 Rep Power: 15	New day, and the front suspension goes on... Weld-nuts! Easy made in a manual lathe!

07-21-2012, 05:38 PM	#270
Tegheim Rotary Fanatic Join Date: Feb 2011 Posts: 210 Rep Power: 15