<br />
THE NATIONAL MARKETPLACE TO BUY & SELL NEW AND USED INDUSTRIAL MACHINERY<br />
WEEKLY<br />
March 21, 2022 Volume 39, Issue 12 800-203-9960<br />
<br />
The first thing to wear out on a CNC<br />
Machine is often the drawbar springs!<br />
<br />
Belleville springs provide the only force that holds tools in the spindle while<br />
cutting, and they are often the first to wear out on a CNC Machining Center.<br />
Drawbars can have over 140 Belleville springs in the stack. Just the slightest<br />
wear, or one broken spring will have a huge effect on clamping force, causing<br />
chatter, bad finishes, reduced cutter life, and scrapped parts.<br />
Ball-type gripper<br />
Pull-Stud<br />
Disc Springs<br />
A typical drawbar assembly.<br />
Left unchecked, a tool may eventually pull out of the spindle during a cut and<br />
damage the spindle, cutter, arbor, and fixture.<br />
Machines are never the same after a crash.<br<a title="March 21, 2022 - Industrial Machine Trader page 1" href="https://secure.viewer.zmags.com/publication/fd0eb2b9?page=1"> THE NATIONAL MARKETPLACE TO BUY & SELL NEW AND US</a>
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