A planetary gear carrier clamp

Abstract

The invention provides a fixture for a planetary gear carrier, which includes a base, a mandrel, a positioning block, an expansion disk, a pressing block and a pressing bolt. The middle part of the base is provided with a first screw hole, and the mandrel and the positioning block are fixed on the base. , the upper end of the mandrel is provided with a positioning boss, the middle part of the mandrel is provided with a first through hole, the middle part of the expansion disk is provided with a second through hole matching with the positioning boss, and the pressure block is located on the upper side of the expansion disk. The middle part of the block is provided with a third through hole, and the screw-in end of the compression bolt passes through the third through hole and the first through hole in turn and is screwed into the first screw hole. The expansion disc includes two discs, and the upper The disk on the upper side is arched upward from the edge to the middle, and the lower disk is arched downward from the edge to the middle. Radial setting of the disk. Due to the adoption of the above technical solution, the present invention has high repeat positioning accuracy for blanks; it is not easy to cause blocking interference to processing tools.

Description

technical field [0001] The invention belongs to the technical field of tooling fixtures, in particular to a planetary gear carrier fixture. Background technique [0002] When processing the planetary gear carrier, it is necessary to further finely process the blank of the planetary gear carrier to obtain the finished product of the planetary gear carrier. Such as figure 1 with figure 2 As shown, there is an existing planetary gear carrier blank, including a cylinder 1, one end of the cylinder 1 is provided with a circular flange 2, and the side of the flange 2 away from the cylinder 1 is provided with five grooves 3. Five grooves 3 are evenly arranged along the circumferential direction of the flange 2 . At present, when using a numerical control machining center to further process such a blank, a three-jaw chuck is usually used to fix the blank, and the jaws of the three-jaw chuck press against the side of the blank having the groove 3 . But there are following disadva...

AI Technical Summary

Problems solved by technology

[0003] 1. After processing a blank, when processing subsequent blanks, the repeated positioning accuracy of the blank by the three-jaw chuck is poor;

[0004] 2. The claws of the triangular chuck are pressed against the surface of the blank, which is easy to block and interfere with the processing tool;

[0005] 3. Five grooves are evenly arranged on the blank along the circumferential direction, and the angle between the center points of two adjacent grooves and the center of the flange is 72 degrees, and the three-jaw chuck There are only three claws, and the angle between two adjacent claws is 120 degrees. When clamping, it is easy to appear that only part of the claw is clamped on the side of the flange away from the cylinder, and a part is located in the groove. Position, so that the contact area between the claw and the flange away from the cylinder is small, resulting in poor clamping stability

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