A positioning and clamping device and a processing method

The positioning and clamping device, consisting of a central shaft, a first clamping element, a second clamping element, and an actuator, solves the problem of high-precision clamping that is difficult to achieve with a three-jaw chuck, enabling precise positioning and efficient processing of disc-shaped workpieces, and improving processing accuracy and efficiency.

CN118893470BActive Publication Date: 2026-07-17CHONGQING HONGJIANG MACHINERY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHONGQING HONGJIANG MACHINERY CO LTD
Filing Date
2024-08-30
Publication Date
2026-07-17

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Abstract

This invention relates to a positioning and clamping device, comprising a central shaft, a first clamping member, a second clamping member, an actuator, and a positioning pin. The central shaft has a positioning surface at its upper end, and the positioning pin is mounted on the positioning surface. The first clamping member has multiple first ears and a downward pressing surface. The second clamping member has multiple second ears, with multiple clearance notches formed between the second ears. The actuator can drive the second clamping member to move between a third position and a fourth position. When the first clamping member is in the first position and the second clamping member is in the fourth position, the multiple second ears press downward against the multiple first ears. When the second clamping member is in the third position, the first clamping member can rotate between the first and second positions. When the first clamping member is in the second position and the second clamping member is in the third position, the multiple first ears are respectively located below the multiple clearance notches. This invention also proposes a processing method. This invention can improve the processing accuracy of disc-shaped workpieces.
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