Design Of Broach Tool Pdf
Hey All, I was wondering if anyone out there might know of any books or articles that could help me with understanding broach tool design. I am a manufacturing engineer with a large company that does a lot of broaching with large tools. Some of our tools are up to 6 inches in diameter and 100 inches long. We use large, up to 80 ton, verticle pull down style machines. I am trying to find information on the tool design to help me trouble shoot problems that we encounter. I am having a hard time finding anything. Can anyone help me out.
It would be greatly appreciated. Thanks, Gary B.
Since you are a end user of broaches, and a large one at that, I'd suggest looking to some of the larger broach companies and try to get through to the engineering department. Engineering managers are a lot more helpful than sales people and can possibly reccommend some titles. Then ya gotta find them. AbeBooks has several copies of 'Broaches and Broaching' by Burden, W.Wilson clicky: There's a few other online sources for old books, maybe someone else can help out there. The other route is through SAE or ASM. ASM's machining volume might have some info, or they might be able to lead you to some specific titles: Google is a powerful tool if you learn how to use it's features so it doesn't drown you with info.
Check their book search also. Calling SAE might yield some papers on this, the aircraft industry uses lots of complex broaches, but I can't suggest anything there. Broaching has been around for a long time so I'd bet there's been a fair amount published, but probably nothing recently.
A post one some of the engineering boards might help too: or Chris. I spent several years with an auto parts supplier dealing with broaches and broach problems and I found very few broach problems can be traced to broach geometry. Most Broach problems are caused by weak coolant, poor sharpening or machine problems. Most of the broaches we had cut splines and rotors in cast iron and steel.
Blind Hole Broach Tool
Gives the strength of the tool January 31, 2008 Nageswara Rao Posinasetti 29 FIGURE F-37 Insert thickness as determined by length of cutting edge engagement and feed rate (copyright © General Electric Company). Kibbe, John E. Neely, Roland O. Meyer, and Warren T. White Machine Tool Practices, 7e Copyright ©2002 by Pearson Education, Inc.
For those applications we used a 20 degree hook,had usually less than.001 inch back taper on each tooth and usually.003 to.010 inch rise to the next tooth. The gullet depth in my opinion is not a big deal as long as it doesn't rise too much from resharpening. When the broaches are resharpened, It is important to take out all the wear and leave a good finish. Broach life is depentant on the length of cut and coolant weakness. I hope this helps you solve your problems. Thanks Guys, These are all sources I haven't tried yet.
I'm still looking. I do deal with Nachi Machining Technology a lot and a couple of other larger broach manufactures. What I run into is that there is a lot of info, but none of it is written down, it's just in someones head. I have been dealing with broaching off and on for over 20 years, so I'm not exactly a rookie, but when it comes to finding written information I keep coming up short. I really appreciate all of the help and once I make some progress I'll let you all know what we found. Thanks again, Gary.
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Broach Cutting Tools
Convertible, Internal and Surface Broaching Machine. Table Up Vertical Internal Broaching Machine. High-Speed Surface Vertical Broaching Machine. Has cutting speeds up to 120 F.P.M. General Purpose Internal Horizontal Broaching Machine for numerous pull broaching applications including keyways & splines. Heavy Duty Surface Vertical Broaching Machine. Light Duty Internal Pull Down Vertical Broaching Machine.
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BMS designs and builds broaches and offers sharpening and reconditioning and repair service. BMS can consult on or design broach tooling for any broaching application, using the latest 3-D autocad software. BMS can run your broach production. Tonnage capacities to 75 tons, and stroke capacities to 120'. Long or short runs. BMS offers Parts and Service for most makes and models of broaching machines produced in the U.S.