Assembly tooling for casing and stator of a direct drive motor

Abstract

The invention discloses an assembling tool for a shell and a stator of a direct drive motor. The assembling tool comprises a base, guide rods, a support ring and a guide ring. The upper end of the base is connected with the guide rods. A base boss is arranged in the center of the upper end face of the base. The support ring is installed on the upper end face of the base. A stator is attached to the outer wall of the base boss. The lower end face of the stator abuts against the support ring in an attached mode. The guide ring comprises a mounting table, and a mounting table lower bulge is formed on the lower end face of the mounting table. Lower bulge through holes penetrating through the inner and outer walls are formed in the mounting table lower bulge. The inner end of each lower bulge through hole abuts against a ball. The inner ends of the balls are exposed out of the lower bulge through holes and abut against the outer wall of the stator. A heat insulation ring is arranged on theupper end face of the mounting table, and the heat insulation ring abuts against the shell in an attached mode. The shell includes a second shell body matched with the stator. The shell is pressed downwards to drive the guide ring to be pressed downwards along with the guide rod so that the second shell body can be pressed into the outer wall of the stator in an interference fit manner. In the invention, the stator is fixed reliably and firmly, the temperature of the shell will not decrease rapidly, and the assembly of the shell and the stator is premise, reliable and efficient.

Description

technical field [0001] The invention relates to the field of assembly tooling for motor components, and more specifically relates to an assembly 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 stability of the stator, t...

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

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