An integrated assembly fixture for a reverse planetary roller screw pair

Abstract

The invention discloses an integrated assembly fixture of a reverse type planetary roller screw pair, which utilizes the design idea of ​​motor drive and integrated assembly process to ensure that the reverse type planetary roller screw pair can be assembled and produced safely and efficiently. The motor is used to drive the clamping end assembly, and the motor is roughly adjusted to control the roller screw assembly to be assembled. The clamping end assembly uses a connecting plate to connect multiple hinge structures. The hinge structure has a magnetic card that clamps the rollers to be assembled. Claws and springs, the middle boss assembly is equipped with a locking device, which can hold the push rod to be assembled, and it is convenient to install the push rod to be assembled into the hollow screw; a rotary table is installed between the middle boss and the base, and the nut assembly adopts a circular The clamping plate is used to fix the nut. Under the action of the matching nut, the long nut to be assembled and the circular clamping plate move together in a circular motion. There are also double-row linear guide rails under the nut assembly. Manual fine-tuning can make the long nut to be assembled move in a straight line. The movement is beneficial to the enterprise's efficient product assembly of the reverse planetary roller screw pair.

Description

technical field [0001] The present invention relates to the technical field of mechanical manufacturing and assembly technology. Specifically, it is an integrated assembly fixture for a reverse planetary roller screw pair. Background technique [0002] The reverse planetary roller screw pair to be assembled is a mechanical transmission device that converts rotary motion into linear motion. It is mainly used in integrated electromechanical actuators together with servo motors, including hollow screws, rollers, planetary It is composed of rack, push rod and long nut; due to its compact structure and complex meshing relationship, it is difficult to assemble, and its assembly difficulty is mainly due to the problem of planetary installation of multiple threaded parts; abnormal installation affects its normal operation and reduces transmission. reliability and equipment life. [0003] Patent CN 105437116 B discloses "a planetary roller screw pair assembly fixture", the assembly...

AI Technical Summary

Problems solved by technology

[0002] The reverse planetary roller screw pair to be assembled is a mechanical transmission device that converts rotary motion into linear motion. It is mainly used in integrated electromechanical actuators together with servo motors, including hollow screw, roller, planet It is composed of frame, push rod and long nut; due to its compact structure and complex meshing relationship, it is difficult to assemble, and the difficulty of assembly mainly comes from the planetary installation of multiple threaded parts; abnormal installation affects its normal operation and reduces the transmission speed. reliability and service life of equipment

[0003] In the patent CN 105437116 B, "a planetary roller screw pair assembly fixture" is disclosed. The assembly fixture is based on the roller pressing bar on the base to fix the rollers to realize the assembly process of some parts; although the whole set of equipment is only The assembly between the roller and the nut can be completed, but the accuracy of the assembly of the roller is not high, the manual operation of the assembly process is too complicated, and the reliability of the equipment is not high

[0004] In the patent CN 109807782 A, "an assembly fixture for multi-type planetary roller screw pairs" is disclosed. On the assembly fixture, the three-claw fixing assembly fixes the horizontal position of the nut, and the umbrella-shaped roller fixing assembly fixes the position of the rollers. , the nut support component supports the nut to realize its assembly process; although the whole set of equipment can complete the assembly except the screw, it is controlled manually, the whole is too bulky, and the assembly process does not include all the parts of the planetary roller screw pair , not one-piece assembly; the overall precision is not high, and the operation is troublesome

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