Guiding sleeve, servo actuator with guiding sleeve and nylon coating method

Abstract

The invention provides a guiding sleeve used for a servo actuator, and the servo actuator with the guiding sleeve, and provides a nylon coating method, and a motion friction pair has excellent guiding performance. The guiding sleeve comprises a guiding sleeve body and a nylon coating bonded to the inner surface of the guiding sleeve. The nylon coating is formed in the manner that nylon powder 1010, molybdenum disulfide powder and graphite powder are mixed and are then melted and bonded. The nylon coating method comprises the following steps that nylon coating powder is prepared, a bonding agent is applied, powder is scattered in advance, heating curing is conducted, the coating powder is melted through heating, the powder is scattered formally, cooling is conducted, and fine boring machining is conduced. The motion friction coefficient is reduced, the lateral load bearing force is enhanced, the service life of a sealing piece is prolonged, and the maintaining operability is improved.

Description

technical field [0001] The invention relates to the technical field of servo loading actuators, in particular to a guide sleeve structure of a servo actuator and a nylon coating method. Background technique [0002] At present, the existing domestic servo-actuator friction pair adopts non-metallic guide ring or bronze guide, which has the following defects: [0003] 1. If figure 1 left and figure 2 On the left, the non-metallic guide ring with two-body structure is used, the gap accumulation is too large, and the centering of the piston rod is not good, which causes the eccentric wear of the seal, which leads to oil leakage; [0004] 2. The use of non-metallic guide rings requires a longer guide length to bear the same side load, resulting in an increase in the length of the guide sleeve, which in turn increases the structural size and manufacturing cost of the actuator; [0005] 3. The guide sleeve is made of bronze material, which is too sensitive to pollutants, and ha...

AI Technical Summary

Problems solved by technology

[0003] 1. If figure 1 Left and figure 2 In the left picture, the non-metallic guide ring with two-body structure is adopted, the gap accumulation is too large, and the centering of the piston rod is poor, resulting in partial wear of the seal, which in turn leads to oil leakage;

[0004] 2. The use of non-metallic guide rings requires a longer guide length to withstand the same side load, resulting in an increase in the length of the guide sleeve, which in turn increases the structural size and manufacturing cost of the actuator;

[0005] 3. The bronze guide sleeve is used, which is too sensitive to pollutants and causes serious mechanical wear on the surface of the piston rod, which reduces the service life

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