Our Mazak Lathe has a turret that uses a belville spring washers in a friction brake. The nice thing about it is that when a collision occurs the turret is pretty easy to get back on centerline. It uses a shot pin to locate that is pulled back out when it is clamped. It is hydraulic though.....It has live tooling also.....we never use the live tooling except tapping every so often...... If you use pins to locate and hold the tool drum in place it is more difficult to align after collision.....I am not to sure about the disc brake idea.....Seems like tool pressure might make it slip....could be dangerous in a power failure also......
Dave ----- Original Message ----- From: "Kirk Wallace" <[EMAIL PROTECTED]> To: "Enhanced Machine Controller (EMC)" <[email protected]> Sent: Friday, March 07, 2008 8:32 PM Subject: Re: [Emc-users] Powerdex Tool Changers > On Fri, 2008-03-07 at 19:29 -0500, Jim Coleman wrote: >> what about sliding a pin into the turret when its in place to lock it? >> then no lifting is needed, just rotate about it's axis and lock. >> maybe pins coming in from the sides in multiple locations to help >> rigidity? a mechanism similar to the self centering thing on tap >> wrenches, the outward spiral type guide... then you rotate that ring >> to engage the pins... taper the entrance to the pin holes on the >> turret to allow it to pull into place if it's indexing isnt the >> greatest. I would try to rough out a quick drawing to try to help >> depict my thoughts but i guess i dont have any cad installed on this >> computer, so i hope you're able to visualize what im trying to >> describe. it actually looks kinda purdy inside my head, assuming the >> mechanism would actually work. > > The problem I have with sliding pins, is that to have the pins slide > there must be at least some clearance in the location system. That's why > I like the Hardinge system. I found a similar changer here: > > http://www.issintl-inc.com/latheturret/ > >> on a side note... when you huys see HAL, do you think of it as 3 >> letters, like LED or SUV, or d oyou think of it as a single word, like >> the name... kinda like shallow Hal? noticed you referred to it as >> "an HAL module" and i usually think "a HAL module" which would imply >> it's being said as if it were a name. Not like it really matters, >> just the thoughts churning in my head.... >> >> Jim > > I tend to think of HAL as a form of the term "Hardware Abstraction > Layer", so I felt obligated to say "an HAL module". But now that I think > about it, HAL doesn't seem to describe a particular entity. Whereas Hal > might be thought of as the application of HAL concepts to a subsystem > within EMC. You got me on this one. I'll watch to see if there any > compelling arguments either way. > > Now that you mentioned it. I noticed some people using "than" when I > would expect "then". > -- > Kirk Wallace (California, USA > http://www.wallacecompany.com/machine_shop/ > Hardinge HNC lathe, > Bridgeport mill conversion, doing XY now, > Zubal lathe conversion pending) > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2008. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
