Convenient assembling auxiliary tool for casing and stator of direct-drive motor

Abstract

The invention discloses a convenient assembling auxiliary tool for a casing and a stator of a direct-drive motor. The convenient assembling auxiliary tool comprises a base, a guide rod, a supporting ring, a positioning ring and a guide ring. The upper end of the base is connected with the guide rod. A base boss is arranged at the upper end of the base. The supporting ring and the positioning ringare mounted at the upper end of the base. A stator is attached to the outer wall of the base boss. The lower end of the stator abuts against the supporting ring. The guide ring comprises a mounting table, arc-shaped through holes are uniformly distributed in the inner wall of the mounting table, and balls arranged up and down are attached into the arc-shaped through holes. A gland is installed onthe lower end face of the mounting table. The inner ends of the balls are exposed out of the arc-shaped through holes and abut against the outer wall of the stator. A heat insulation ring is arrangedat the upper end of the mounting table. The gland and the heat insulation ring limit the balls in the arc-shaped through holes between the gland and the heat insulation ring. The heat insulation ringabuts against the casing. The casing comprises a second shell, and the casing is pressed downwards to enable the second shell to be pressed into the stator in an interference fit mode. According to the invention, the stator is fixed reliably and firmly, the temperature of the casing cannot be reduced rapidly, and the casing and the stator are assembled accurately and reliably with high efficiency.

Description

technical field [0001] The invention relates to the field of assembly tooling for motor components, and more specifically relates to a convenient assembly auxiliary tooling for a casing and a stator of a direct drive motor. Background technique [0002] Due to its low speed and high output torque characteristics, direct drive motors are also called torque servos. Unlike traditional motors, direct drive motors can be directly connected to the load, thus eliminating the need for reduction transmission mechanisms such as reducers and gearboxes. The structure is simple and easy to assemble. It is convenient and maintenance-free, so it is widely used in some industries. [0003] The direct drive motor is mainly composed of casing, stator, rotor, end cover and other components. The iron core part of the stator is integral, and the stator is installed into the casing through interference fit. Due to the high output torque of the direct drive motor, in order to To ensure the stabil...

AI Technical Summary

Problems solved by technology

[0003] The direct drive motor is mainly composed of casing, stator, rotor, end cover and other components. The iron core part of the stator is integral, and the stator is installed into the casing through interference fit. Due to the high output torque of the direct drive motor, in order to To ensure the stability of the stator, the interference usually takes a larger value, so that the assembly of the casing and the stator needs to be completed by shrinking sleeves. In the prior art, the stator is usually placed on a press to fix it, and then the casing is put into an oven for heating. To a certain temperature (the temperature is calculated based on the design value of the interference), the worker puts on heat-insulating gloves and quickly takes out the casing and places it on the stator to align it, and finally presses down the casing to complete , there are the following problems in this process: First, the heated casing is in direct contact with the stator, and the stator has a high thermal conductivity, so the heat transfer between the two is fast, which will cause the temperature of the casing to drop rapidly, which is not conducive to the subsequent pressure The second is that due to the high temperature of the casing, it is very difficult and time-consuming to align the casing and the stator manually, and it is easy to cause burns if it is done quickly; Justification, it all depends on the worker's feeling, without the guarantee of tooling, it is difficult to achieve alignment and alignment every time. If there is no alignment and alignment, the hard pressing of the press will cause deformation of the casing and stator, and even half of the pressure will not go down. The possibility of causing great inconvenience and loss, needs to be improved

Images