Comments on: Dual Contact Tool Holders – Genius or Gimmick? http://www.cncreport.com/dual-contact-tool-holders-genius-or-gimmick/ The Premier Online Machining Magazine Thu, 19 May 2016 23:02:03 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: Tim Hays http://www.cncreport.com/dual-contact-tool-holders-genius-or-gimmick/comment-page-1/#comment-881 Tim Hays Thu, 21 Mar 2013 12:51:11 +0000 http://www.cncreport.com/?p=748#comment-881 Jay,glad to see your reports and editorials. Keep up the Great work your number one fan Jay,glad to see your reports and editorials.
Keep up the Great work
your number one fan

]]> By: Jay Pierson http://www.cncreport.com/dual-contact-tool-holders-genius-or-gimmick/comment-page-1/#comment-557 Jay Pierson Mon, 09 May 2011 17:22:02 +0000 http://www.cncreport.com/?p=748#comment-557 Charles: Thanks for the response and insight. Sorry, still no T-shirts! Charles: Thanks for the response and insight. Sorry, still no T-shirts!

]]> By: Charles Blair http://www.cncreport.com/dual-contact-tool-holders-genius-or-gimmick/comment-page-1/#comment-556 Charles Blair Sun, 08 May 2011 17:53:03 +0000 http://www.cncreport.com/?p=748#comment-556 My impression is that if a tool starts to load enough to pull away from the taper then the pullstud and its clamp are the only force holding the tool in place. The addition of another contact surface would prevent this force on the pullstud because the tool would be bearing on the spindle face. This is the only real way I can personally see that the extra rigidity claim of the dual contact would be of advantage. Newer tool designs like capto or HSK with better tool retention systems shouldnt really need the dual contact. Charles Blair Lawrenceville GA Do I get a Tee shirt? How about a free pallet? My impression is that if a tool starts to load enough to pull away from the taper then the pullstud and its clamp are the only force holding the tool in place. The addition of another contact surface would prevent this force on the pullstud because the tool would be bearing on the spindle face.

This is the only real way I can personally see that the extra rigidity claim of the dual contact would be of advantage. Newer tool designs like capto or HSK with better tool retention systems shouldnt really need the dual contact.

Charles Blair
Lawrenceville GA

Do I get a Tee shirt? How about a free pallet?

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