G-Wizard Calculator:
Fast, Easy, Reliable Feeds and Speeds




GCode is Complicated
G-Wizard Makes it Easy


A Tale of Two Crankshafts: 4th Axis Machining Videos

Oct 15, 2011   //   by Bob Warfield   //   Blog, Cool, Techniques  //  No Comments

I came across these two videos by accident while researching something else, but they’re interesting. Crankshafts seem like the poster children of less-than-obvious machining work, so here are two different examples at radically different scales and costs of how to go about it.

First up is a German Golmatic CNC mill being used to machine the crankshaft for a model of a Boxer 6 cylinder engine:

YouTube Preview Image

Machining a crankshaft with a 4th axis…

I couldn’t find any more information on this interesting project, so I don’t know if the engine was ever completed or not. Perhaps a reader knows and can pass along a link to the overall project. I really enjoyed this 4th axis work, and found several intriguing aspects to the video. Perhaps the most interesting was how the throws were done via eccentric workholding rather than by g-code. I’m very curious whether this was thought to have some advantage or whether the CAM software being used was just not up to the task otherwise.

While looking at the video of a hobbyist’s project for a model engine, I thought it would be fun to see a professional’s job for a real engine. Here is a Mazak Integrex (awesome machine) making a NASCAR crank. Apparently it is a 3 hour job which is very short for such a complex part:

YouTube Preview Image

Mazak Integrex machining a NASCAR crankshaft…

First thing is that the Integrex itself is quite an interesting machine, isn’t it? It’s part turning center and part machining center, with a big does of sophistication thrown on top. I was fascinated to see the use of lathe tooling on milling-like moves and vice versa. I wonder how many 4th axis users on mills have tried that sort of thing and what the trade offs are when deciding whether to use the lathe tool or mill tools?

If you thought these crankshaft videos were interesting, please take our multi-axis machining survey.

Click here to take the survey or see the results.


Do you want to be a better CNC'er?

Get Better Tool Life, Surface Finish, and Material Removal Rates.


Start Your Free Trial Now


Like what you read on CNCCookbook?

Join 40,000+ Machinists, Designers, Engineers, and Hobbyists!  Get our latest blog posts delivered straight to your email inbox once a week for free. Just enter your email address below:


100% Privacy: We will never Spam you!

Leave a comment


Do you want to be a better CNC'er?

Get Better Tool Life, Surface Finish, and Material Removal Rates.


Start Your Free Trial Now



  GW Calculator

  GW Editor



  Deals and Steals

CNC Blog








     Feeds and Speeds

     G-Code Tutorial

     CNC Machining & Manufacturing

     DIY CNC Cookbook

     CNC Dictionary

CNC Projects


     Machinist's Search


     Online Groups


     Reference Data


     CNC Dictionary


     Tool Brands


     Hall of Fame

     Organization: Soon!





     Our History

     Privacy Policy

All material © 2010-2014, CNCCookbook, Inc.