BIG KAISER Tooling Today

percent when the tool is within .005" of the shoulder to minimize chatter of the shoulder. Also, in this case, only select an insert with a pressed geometry. Do not use an up-sharp, positive insert with a three- dimensional chip breaker; it cannot produce the shoulder at a consistent angle.

on the rare part print where a larger bore transitions to a smaller bore and the part print asks for the angle to be 30 or 45 with no blends. The second reason for offering them is to produce chamfers on bores. Many customers like to have an adjustable tool to produce a wide range of bore chamfers and these insert holders will provide that feature. There are clear advantages to matching the right lead angle, an in turn insert holder, to the right application. When assembling a modular boring tool, don’t overlook this selection. It can be just as important to quality results, productivity and tool life as other factors that often get much more attention.

30º

45º

25º

25º

We sometimes get questions about why we offer insert holders in the catalog for fine boring heads with 30-degree or 45-degree lead angle insert holders. It’s There are clear advantages to matching the right lead angle, an in turn insert holder, to the right application. When assembling a modular boring tool, don’t overlook this selection.

CONTRIBUTOR Jack Burley is the Vice President Sales & Engineering at BIG KAISER Email: jack.burley@us.bigkaiser.com

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