Long-barrel-shaped workpiece indexing and positioning jig

Abstract

The invention discloses a long-barrel-shaped workpiece indexing and positioning jig. The indexing and positioning jig comprises a chuck mechanism, a positioning assembly, an indexing center, a mandrel and a tail center, the indexing center, the mandrel and the tail center are horizontally arranged, and the chuck mechanism comprises a first clamping part, a second clamping part and a transmission structure; the center end of the indexing center is connected with one end of the mandrel in a matched mode, the center end of the tail center is connected with the other end of the mandrel in a matched mode, and the mandrel and the long-barrel-shaped workpiece are coaxially arranged and can penetrate through an inner cavity of the long-barrel-shaped workpiece. Under the mutual cooperation of the indexing center and the tail center, the indexing center and the tail center abut against one end of the mandrel respectively, the positioning deviation of the mandrel is greatly reduced, the mandrel, the indexing center and the tail center are located at the same coaxiality, axial positioning of the mandrel and the workpiece is achieved more accurately, and it is ensured that the laser machining position is accurate. After positioning is completed, the indexing center and the mandrel can be quickly connected through the chuck mechanism, and the mandrel and the long-barrel-shaped workpiece rotate in an indexing mode along with the indexing center.

Description

technical field [0001] The invention relates to the technical field of component processing, in particular to an indexing and positioning jig for a long cylindrical workpiece. Background technique [0002] Laser processing has the characteristics of high precision, fast cutting, not limited to cutting pattern restrictions, and smooth incision. Laser cutting is also used in the indexing processing of long cylindrical workpieces. During indexing processing, the long cylindrical workpiece is generally clamped by the indexing chuck and the tip of the tail. At the other end of the mandrel, the indexer on the indexing chuck divides the angle of the circumference of the long cylindrical workpiece into equal parts according to the set parameters. The indexing chuck drives the mandrel and the workpiece to rotate an angle, and the laser head performs a local inspection of the workpiece. cutting processing. The existing indexing chucks are mainly in the form of three-jaw chucks or fo...

AI Technical Summary

Problems solved by technology

The existing indexing chucks are mainly in the form of three-jaw chucks or four-jaw chucks. On the one hand, the jaws of the indexing chucks will jointly cause a certain clamping deformation on the mandrel. The mass is heavy, and they will form a vertical downward component force. After the mandrel is clamped by the indexing chuck, there will be a certain offset, which will affect the coaxiality of the mandrel, the indexing chuck and the tip of the tail. The mandrel has a large amount of runout, which affects the accuracy of the machining position

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