Bidirectional self-centering fixture for workpieces

Abstract

The invention relates to a bidirectional self-centering fixture for workpieces, and belongs to the field of machinery manufacturing. A bidirectional self-centering clamping mechanism is fixedly connected with a base. A nut pressing plate is fixedly connected with the base. The nut pressing plate is connected with a locking nut in a pressed mode. A locking screw is connected with the locking nut in a threaded mode. The front end of the locking screw is in a semi-sphere shape and is connected with the bidirectional self-centering clamping mechanism in an abutted mode. A locking handle is fixedly connected with the rear end of the locking screw. A tip assembly is located below a conical face hole in the base. The bidirectional self-centering fixture is high in universality, especially suitable for the workpieces with the sections being quadrilateral or polygonal, high in bidirectional self-centering accuracy and easy to operate.

Description

Technical field [0001] The invention belongs to the field of mechanical manufacturing, and particularly refers to a fixture for commonly used workpieces. Background technique [0002] With the further development of the manufacturing industry, a variety of clamps emerge in an endless stream. It is more common to clamp workpieces with circular cross-sections, but it is difficult to clamp workpieces with square cross-sections and other polygons, and it is more difficult to rotate workpieces on a fixed axis solve. The four-jaw chucks commonly used on machine tools are mostly centered by drawing lines, which undoubtedly increases the work strength for workers, especially for centering and clamping tool steel. If the cross-section of the cylindrical workpiece is too large, the three-jaw chuck is limited by the precision of the cogging disc, and it is inconvenient to make it too large, and the self-centering of the large cylindrical workpiece is not easy to realize. Versatility shoul...

AI Technical Summary

Problems solved by technology

If the cross-section of the cylindrical workpiece is too large, the three-jaw chuck is limited by the precision of the alveolar plate and cannot be made too large, and the self-centering of large cylindrical workpieces is not easy to achieve

Versatility should be the direction of fixture development, but in the actual production process, in order to hold the workpiece to be processed, fixtures are often designed for a single variety. After processing a batch of parts, the fixture is useless. Turned into waste materials, resulting in great waste

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