BROACHING MACHINE AND BROACHING TOOL FOR MACHINING CIRCULAR ARC GROOVE

WIPO Patent Application WO/2017/031618

A1

A broaching machine (30) for machining a circular arc groove, particularly a circular arc tenon tooth groove, comprises a broaching tool (10), a broaching tool driving mechanism for driving the broaching tool (10) to move, and a workpiece positioning mechanism for positioning a workpiece. The broaching tool (10) comprises a rotary disc (12) and a tool teeth portion (14) connected with the rotary disc (12). The tool teeth portion (14) is provided with a first tool teeth portion end (18) and a second tool teeth portion end (20). The tool teeth portion (14) comprises multiple tool teeth (22) distributed between the first tool teeth portion end (18) and the second tool teeth portion end (20). The multiple tool teeth (22) are arranged in a circular arc shape that is concentric with the rotary disc (12). The heights or widths, or both the heights and weights of the multiple tool teeth (22) gradually increase from the first tool teeth portion end (18) to the second tool teeth portion end (20). The broaching tool driving mechanism is used for driving the broaching tool (10) to rotate around a first axis (40) to machine a circular arc groove in the workpiece.

WANG ZHIQIANG (CN)
HUANG ZHIBIN (CN)

PCT/CN2015/087729

March 02, 2017

August 21, 2015

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SHENZHEN WISDOM ENERGY TECH CO (CN)

B23C3/28; B23D37/14; B23D43/06

WO2007052553A1

2007-05-10

CN204818258U	2015-12-02
CN105033347A	2015-11-11
JPH02256409A	1990-10-17
US4537538A	1985-08-27
CN1159966A	1997-09-24
US20130028679A1	2013-01-31

SHEN, LI & PARTNERS (CN)

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