| 摘要 |
A turn broaching machine for broaching a workpiece comprises a hollow arbor having a plurality of axially spaced apart, circumferentially extending cutting segments projecting radially outwardly from the side wall thereof. The cutting segments each have a radially outer peripheral edge provided with broaching elements. A closed loop system circulates a heated fluid through the arbor. The fluid is heated to an elevated temperature of about 100 F.-150 F. to maintain the arbor in a similarly heated condition during broaching. Maintaining the arbor at a relatively constant, elevated temperature during broaching stabilizes the broach by eliminating axial thermal expansion.
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