We needed to move the position to indicate the broach square. When we got this figured out we had very good success. Our parts are holding within. This was an awesome and helpful article. Thank you very much to everyone who contributed their advice and knowladge. You have to scroll down to the bottom of the blog post. Mark, the thing to do with the Tormach is mount the broach to the spindle head rather than putting it in a tool holder. That solves the locking and indexing problem. Bob — definitely add to G-Wizard when you get a chance.
Always looking for new ways to solve old problems and this is the first I heard of the process, though it makes a whole lot of sense. Agree with others on the spindle bearing loads being a non-issue as a degreed M.
Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. Lean Manufacturing Course. Free Calculators and References. Free Feed Rate Calculator. Back to Homepage. Shop All Our Products. CNC broaching in this way can be done on either a mill or a lathe.
Some things to consider if you want to be on the safer side: — Use of this kind of process on a lathe seems far more accepted. Here is an example from Benz called the LinS Linear Broaching Tool : The LinS uses the familiar stop pin arrangement we see on tapping heads, right angle heads, spindle speeders and the like. Mount the Broaching Shaper Tool rigidly You could also choose to mount the broaching tool rigidly to the head and isolated from the spindle bearings to avoid these kinds of issues altogether:.
Full Name. Yes, definitely interested! We often have to broach special couplings for pump shafts and such… Reply. Sincerely, Mike Turner Operations Mgr. Derby Machine Reply.
Ultra-High Speed Spindles. New job offers. Broaching Unit for CNC Turning Centers The driven broaching unit for economic manufacturing of oriented keyways and splines with up to 1. This investment pays. ID and OD broaching. Sample workpieces. For economic manufacturing of oriented keyways and splines. The machine can often come to a standstill, especially with larger diameters. Process reliability is therefore not guaranteed, especially with larger diameters and materials with higher hardness levels.
With broaching tools, machining can be done in as many passes as necessary. This guarantees process reliability, as the machining parameters can be adjusted depending on the material and profile size.
There are no standard interfaces for inserts and insert holders. This is why vendors of broaching tools usually have a system with their own interfaces and the inserts are usually not interchangeable. One of the most important technical points to consider when it comes to inserts is the material inserts are made of.
Carbide is not suitable for broaching because its low breakage strength does not guarantee process reliability. You can make keyways with a carbide insert, but the edges might break off after a few machining operations. In addition, the surface quality of your keyway might start deteriorating as early as after opening a dozen keyways.
In the manufacture of inserts, preference must be given to materials with high wear resistance and high compressive strength, e. Inserts made of suitable HSS alloys have a longer life due to the wear resistance and offer much greater process reliability thanks to the high pressure resistance. With a TIN coating, the wear resistance and life of inserts can be increased. The geometry of the panels is also an important technical point that influences the surface quality, among other things. TiAlN coating may be prefered when machining harder materials.
For the commercial aspects, particular attention should be paid to the size, tolerance and availability selection. The eccentric bushing is only required if the CNC lathe does not have a Y axis. If, on the other hand, the lathe is equipped with said axis, the eccentric bushing must not be installed and the CNC functions are used to set up the exact position.
The REV Broaching Tool system is very flexible and makes it possible to perform a whole series of internal profiles by simply changing the insert.
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