Go Back   PowerStrokeArmy > Non - Specific > Welding & Fabrication Forum

Reply
 
Thread Tools Display Modes
  #1  
Old 02-26-2016, 07:47 AM
ken6881 ken6881 is offline
Sergeant
Member's Gallery
 
Join Date: Oct 2012
Posts: 429
Default First time on a lathe.....

So I am needing to do some machine work on my f450 build. Literally first time on a lathe so don't mock to hard
ImageUploadedByTapatalk1456497813.165682.jpg
Working on cutting serpentine. Belt grooves for my dt360 balancer. Obviously not wanting to jack up a balancer I picked up some scrap round stock and went to work. Any suggestions tools I need .... Our machine shop is pretty sad when it comes to tool selection we have all the big stuff but none of the little pieces to go with it.



Sent from my iPhone using Tapatalk
__________________
2002 F-250 XLT 4x4 offroad extended cab short bed
2000 model 7.3L diesel with forged rods
4-4.5in down pipe 5in back exhaust, 6637 filter, backup camera, gauges, DIY boost fooler($18.94)
NOW delta force (sniper) tuned by me!!!
  #2  
Old 02-26-2016, 02:22 PM
ja_cain's Avatar
ja_cain ja_cain is offline
Colonel
Member's Gallery
 
Join Date: Aug 2013
Posts: 4,534
Default

[QUOTE=ken6881;1344726]So I am needing to do some machine work on my f450 build. Literally first time on a lathe so don't mock to hard
Attachment 42336


Working on cutting serpentine. Belt grooves for my dt360 balancer. Obviously not wanting to jack up a balancer I picked up some scrap round stock and went to work. Any suggestions tools I need .... Our machine shop is pretty sad when it comes to tool selection we have all the big stuff but none of the little pieces to go with it.

Need a pic of the piece chucked up and the tool that you were using. Looks like you are having rigidity issues. I would look for a cad drawing of a serpentine pulley so you can see what the radius of the tip of the cutter should be. I would assume you also need to know how deep to make it and the angle of the groove walls so they interface with the belt grooves correctly.

I'll try to find something for you and post it up. These details should be standard.
  #3  
Old 02-26-2016, 02:24 PM
ken6881 ken6881 is offline
Sergeant
Member's Gallery
 
Join Date: Oct 2012
Posts: 429
Default

I was going to take a pulley with me to the local supplier and see what I could find that fits. It looks like rigidity issues to me as well by the "feel" and marks in the grooves I cut.


Sent from my iPhone using Tapatalk
__________________
2002 F-250 XLT 4x4 offroad extended cab short bed
2000 model 7.3L diesel with forged rods
4-4.5in down pipe 5in back exhaust, 6637 filter, backup camera, gauges, DIY boost fooler($18.94)
NOW delta force (sniper) tuned by me!!!
  #4  
Old 02-26-2016, 04:41 PM
ja_cain's Avatar
ja_cain ja_cain is offline
Colonel
Member's Gallery
 
Join Date: Aug 2013
Posts: 4,534
Default

I think this is what you need. Just need to find out which letter the belt is you are using.
Attached Images
File Type: jpg poly-v-belt-drives-156686_1b.jpg (247.0 KB, 72 views)
  #5  
Old 02-26-2016, 09:35 PM
Baker42's Avatar
Baker42 Baker42 is offline
Sergeant
Member's Gallery
 
Join Date: Sep 2011
Location: New Mexico
Posts: 345
Default

Dial indicator, depth gauge, a magnetic base, and patience. I was a CNC machinist by trade until I got layed off in 06. Got into the plumbing/mechanical trade and never looked back. I still play around on a colchester lathe and a bridgeport mill making junk for my bronco. Patience and math is key. Good luck
  #6  
Old 02-26-2016, 09:38 PM
ken6881 ken6881 is offline
Sergeant
Member's Gallery
 
Join Date: Oct 2012
Posts: 429
Default

I was trying to figure out how to do the spacing between grooves but the dial indicator on a magnetic base is the way to go for good measurement. Thanks baker and ja_cain
__________________
2002 F-250 XLT 4x4 offroad extended cab short bed
2000 model 7.3L diesel with forged rods
4-4.5in down pipe 5in back exhaust, 6637 filter, backup camera, gauges, DIY boost fooler($18.94)
NOW delta force (sniper) tuned by me!!!
  #7  
Old 02-26-2016, 11:52 PM
PsdPullerJr's Avatar
PsdPullerJr PsdPullerJr is offline
Lieutenant
Member's Gallery
 
Join Date: May 2013
Location: Western PA
Posts: 515
Default

Make sure your tool is on center to the work piece and your using the correct rpm for the diameter your cutting.
__________________
2000 WSD Puller, AFE Stage II, Auto Meter NVs, CPR-X Fuel system, Dyno Proven work stock 2.5 turbo, Swamps 400/200, HBjr, GH tunes. 2001 F350 reg cab, CSD heads, Irate Mount, GTX4202, Gen3, R&R rods, Marty's fuel, Swamps 300/200, BTS. 2002 CCLB, under the knife...
  #8  
Old 02-27-2016, 06:21 PM
gwunter's Avatar
gwunter gwunter is offline
Major
Member's Gallery
 
Join Date: Jan 2013
Location: Logansport, IN
Posts: 1,061
Default

Get a piece off HSS and custom grind it if need be.....on a surface grinder if you can. But you might be able to find a cutter with the proper tip angle on it. If I was you...I would lock the saddle down, turn the cross slide 90*(indicated in) and zero out your compound on the first groove, then use cross slide to feed cutter into work, once to depth back out cross slide and move cutter via compound to the next groove. Continue till all groves are done. Be careful of your surface speed as psdpuller said. Orrrrr

If your mill is outfitted with a rotary table you could once again find/make the right cutter and then use the z axis to get your groove spacing and your x axis for your groove depth. Easy peazy once set up.
__________________
Just a crazy, wannabe machinist....making crazy stroker parts.
  #9  
Old 02-28-2016, 11:42 AM
mandkole's Avatar
mandkole mandkole is offline
Major
Member's Gallery
 
Join Date: Jan 2012
Location: Northwest
Posts: 2,301
Default

Youre going to be needing groove detail for the 'K' cross section belt.

All very good suggestions above. Having been in the belt business for years now, the groove profile and spacing of a serpentine style belt is critical for good belt performance. Groove center is critical-- you are allowed 1/2 degree offset for every foot of belt span. Runout will make belt tension management go crazy. With anything incorrect, you will kill belts or have squawking belts very quickly. Normally all of the grooves are cut at the same time with specific tooling, but very skilled guys with nice machines can do it one at a time.

Id like to play with a lathe some day but accessory drive pulleys are not something that I'd be tackling as my first project--although not cheap, there are lots of companies that can do this.

good luck!
__________________
2000 F250 CCSB GT4294R, 250/100s, Dahl/Fuelab, BTS, PHP tuning, stock 17* pump
1994 F250 SCLB
(sold)
1997 F250 CCSB 2wd (sold)
  #10  
Old 02-28-2016, 03:00 PM
ja_cain's Avatar
ja_cain ja_cain is offline
Colonel
Member's Gallery
 
Join Date: Aug 2013
Posts: 4,534
Default

Quote:
Originally Posted by mandkole View Post
Youre going to be needing groove detail for the 'K' cross section belt.

All very good suggestions above. Having been in the belt business for years now, the groove profile and spacing of a serpentine style belt is critical for good belt performance. Groove center is critical-- you are allowed 1/2 degree offset for every foot of belt span. Runout will make belt tension management go crazy. With anything incorrect, you will kill belts or have squawking belts very quickly. Normally all of the grooves are cut at the same time with specific tooling, but very skilled guys with nice machines can do it one at a time.

Id like to play with a lathe some day but accessory drive pulleys are not something that I'd be tackling as my first project--although not cheap, there are lots of companies that can do this.

good luck!
Good info! It would be cool if we could locate the specific tool that you would use to cut the grooves for a k type belt. I'll do some digging around and see what I come up with.
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 07:50 AM.

 

Powered by vBulletin®
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

Designed by Military Ltd