Three-rotor spinning fixture and its operation technology for small-diameter plunger assembly

Abstract

The invention discloses a three-roller spinning clamp suitable for a small-diameter plunger assembly and an operation process of the three-roller spinning clamp. Rollers of the clamp are connected torotating shafts in a sleeving mode and then fixed between a roller frame and a roller frame cover plate, the roller frame and the roller cover plate are fixed, a boss is arranged on the side, close tothe rollers, of the roller frame, and a shaft sleeve is installed on a rotating shaft on the other side of the rollers. Through holes are formed in the middle of the roller frame and used for a spring chuck to clamp the sliding shoe tail part of a workpiece after the spring chuck passes through the through holes, and a dynamometer is fixed to a base of the roller frame; and the other end of the spring chuck is clamped by a chuck of a machine tool. The three-roller spinning clamp is simplified in structure, simple in process, convenient in installation and good in surface smoothness of machined faces, can effective control the axial clearance of the plunger assembly, improves machining quality and production efficiency, and saves the equipment input cost.

Description

technical field [0001] The invention relates to the field of a spinning fixture, in particular to a special fixture suitable for three-wheel spinning of a small-diameter oil pump plunger assembly and its operating process, which can complete the oil pump plunger assembly with high efficiency, low cost and high quality. Spinning closing process. Background technique [0002] The plunger assembly is a key part of the plunger pump, which consists of a plunger and a sliding shoe, and is one of the most widely used hydraulic components in modern hydraulic systems. The cooperation of the plunger assembly is mainly to complete the connection by applying pressure to the slide shoe. In fact, the ball head of the plunger body and the ball socket of the slide shoe are matched together, and the slide shoe is pressed by an external force to make it plastically deformed, thereby Wrap the plunger, which not only requires the plunger to move flexibly in the slide shoe, but also has high pr...

AI Technical Summary

Problems solved by technology

The first two methods require multiple manual processes to complete the closing, which is inefficient and difficult to roll loose. The flexibility and axial clearance between the sliding shoe and the plunger are difficult to meet the requirements of the parts, and the unstable process leads to product quality. consistency is difficult to guarantee

Spinning closing equipment currently mainly relies on imported spinning machines from abroad. Domestic spinning machines are usually difficult to ensure that each spinning wheel contacts the closing point on the sliding shoe at the same time, resulting in uneven force on the sliding shoe, high scrap rate, and damage to parts. Higher size requirements

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