Craig Simon's Page

Craig Simon replied to Craig Simon's discussion Workholding - Chuck Jaws in the group Machine Tool Exchange

"We are looking into wedge chucks. I have always been a fan of the least moving parts and the maximum surface contact area for durability."

May 24, 2011

Joelle Walker replied to Craig Simon's discussion Workholding - Chuck Jaws in the group Machine Tool Exchange

"Craig, There are different types of lathe chucks and life and failure modes will be affected by your cuttin conditions. There are ball lock chucks, pin arbor chucks, wedge chucks. What type of chuck are you looking into?"

Apr 6, 2010

Craig Simon commented on John R. Gyorki's blog post Non-sequitur

"A couple of summers ago our church had a special course during the summer which was called the truth series, I strongly recommend it if you like the topic involved here. In one of the first videos of this series, the Professor (this was a video of a…"

Feb 5, 2010

Craig Simon replied to Brian Halicki's discussion Unknown Thread Size

"I have not heard of this one - just out of curiosity what is it for? If it is a standard thread form it will have all the same tolerances except the depth and minimum diameter (assuming it is an external thread) will be dictated by when the top of…"

Feb 1, 2010

Craig Simon replied to Steve N's discussion parasolids

"I love Transmagic. It can open any of these files and many more and save it into whatever type of file you need. If you need help on a file or two send it to me - craig.simon@crpt.us - and I will send them back in the form you need."

Jan 27, 2010

Craig Simon replied to Timothy Ruffner's discussion Do you design for Prototype and Manufacturing or 1 design for both?

"We make a lot of prototype parts and some short run production, i.e. <100. Our machines are purchased with that business model in mind, our shop is set up for that mentality, etc. Tolerances are really non-existent in prototypes if you go to a…"

Jan 15, 2010

Craig Simon replied to laura carrabine's discussion Select the Right Robot for the Right Job

"In working with numerous applications in manufacturing, I find that the right robot is usually the most flexible because it never hurts to have a little extra capability so that you can do the extra and usually the delta cost is marginal. The other…"

Dec 31, 2009

Paul M. Terry replied to Craig Simon's discussion Workholding - Chuck Jaws in the group Machine Tool Exchange

"Craig, I understand the application but depending on how much steel is removed from the forging you may have several dimensional issues. Is there a stress releive operation after turning and milling? If there is then any side holes or features put…"

Oct 31, 2009

Craig Simon replied to Craig Simon's discussion Workholding - Chuck Jaws in the group Machine Tool Exchange

"I am not sure what you mean by a 2 jaw chuck started life as a 3 jaw? The advantage of a two jaw over a three jaw is that the customer can take advantage of the live tools in the turrets and machine on the side as well. (Think fluid fittings like…"

Oct 29, 2009

Bill MacCracken replied to Craig Simon's discussion Workholding - Chuck Jaws in the group Machine Tool Exchange

"Usually a 2 Jaw chuck started life as a 3 Jaw chuck 8-) Why are you using a 2 jaw chuck? Depending on tolerances there may be better ways to hold the work piece."

Oct 29, 2009

Craig Simon added a discussion to the group Machine Tool Exchange

Workholding - Chuck Jaws

I have been working on a project for a customer that requires holding a forged piece in a 2-jaw chuck system for turning and/or milling in a lathe or mill/turn machining center. I do not have a lot of experience with long term wear and failure modes of 2 jaw chucks. Can someone help me understand the the life, failure modes, and anything else that can affect machined component quality in the different types of chucks?

Oct 29, 2009

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Craig Simon joined Marshall Matheson's group