Coupling method for servo motor shaft and rotor

Abstract

The invention discloses a coupling structure for a servo motor rotor and a servo motor shaft. The servo motor rotor (2) and a special adhesive are provided by a servo motor manufacturer, wherein the tolerance of a servo motor rotor matching hole is phi D (H7). A straight roller spline is reserved at the matching position of the servo motor shaft (1) and the servo motor rotor (2). When assembling the servo motor, a coupling method for the servo motor rotor and the servo motor shaft comprises the following steps of: first, boiling the servo motor rotor (2) in boiling water for 5 to 10 minutes; cleaning the matching surface of the motor shaft (1) at the same time; and coating a thin layer of the adhesive on the surface uniformly; then, taking the servo motor rotor (2) out of the boiling water, and after water drops on the surface evaporate, sleeving the servo motor rotor (2) on a corresponding part of the servo motor shaft (1) rapidly and pressing the servo motor rotor (2) in place by using a bench vice; and finally, after cooling, performing a solidifying process by using the adhesive. The coupling structure has the characteristics of reasonable structure and higher coupling precision, coupling rigid and coupling reliability, and can effectively reduce cost.

Description

technical field [0001] The invention relates to a servo motor shaft and rotor with higher connection precision, connection rigidity and connection reliability, and effective cost reduction compared with the traditional servo motor shaft and motor rotor connection method in the field of precision machinery manufacturing. connection method. Background technique [0002] When purchasing and using a shellless servo motor, the connection method between the motor shaft (made by the user) and the motor rotor is generally provided by the manufacturer of the servo motor. The most commonly used connection method is: using H 7 / h 6 Level gap fit, and fill the gap with the adhesive provided by the motor manufacturer. There are three main disadvantages of this connection structure: 1. Due to the use of clearance fit, the center of mass of the motor shaft and the center of mass of the motor rotor must not coincide, and additional torque will be generated when the motor rotates, resulti...

AI Technical Summary

Problems solved by technology

There are three main disadvantages of this connection structure: 1. Due to the use of clearance fit, the center of mass of the motor shaft and the center of mass of the motor rotor must not coincide, and additional torque will be generated when the motor rotates, resulting in tremors during high-speed operation, motor heating and control accuracy. 2. Since the main component of the adhesive is resin, there is inevitably an aging problem; 3. In order to control the misalignment of the center of mass within a certain range, a high-precision fixture should be used to ensure that the high-precision Fixture manufacturing costs are relatively high

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