Tool for repairing balancing column of cast-aluminum rotor

Abstract

The invention relates to a tool for repairing a balancing column of a cast-aluminum rotor. The tool comprises a clamping-on handle and a repairing block, wherein the upper part of the repairing block is fixedly equipped with the clamping-on handle, and axes of the repairing block and the clamping-on handle are located on the same straight line; the repairing block is a cylinder, a conical bore is formed in one end of the cylinder, and the size of the conical bore is determined according to an angle of the balancing column; cutting edges are arranged inside the conical bore, and blades are arranged along an anti-clockwise direction; and four scrap-accumulating grooves are uniformly distributed among the cutting edges. The tool for repairing the balancing column of the cast-aluminum rotor has the advantages and the beneficial effects that: a clamping-on handle mode is adopted, and the repairing tool can be matched with electric and pneumatic tools in use, thereby greatly improving applicability of the tool; the repairing block adopts a tubular type design, thereby ensuring that the cutting edges can cut the balancing column in a balanced manner, one-side cutting is prevented from being caused by moment of force generated due to cutting forces, and a cutting effect is not influenced; and the four scrap-accumulating grooves are uniformly distributed among the cutting edges which are used for accommodating aluminum scraps generated by cutting, the decline of cutting capability is prevented from being caused by aluminum scrap accumulation, and cleaning work after cutting is facilitated at the same time.

Description

technical field [0001] The invention belongs to the field of tooling molds for motor manufacturing, and in particular relates to a repair tooling for a cast aluminum rotor balance column, which is especially suitable for repairing the cast aluminum rotor balance column after die-casting. Background technique [0002] The motor refers to an electromagnetic device that realizes the conversion or transmission of electric energy according to the law of electromagnetic induction. The rotating part of the motor is called the rotor, which is composed of rotor core, rotor winding, rotating shaft and fan. There is a three-phase asynchronous motor whose rotor winding is welded by aluminum strips or copper strips and short-circuit rings, called squirrel-cage motors. Small and medium-sized squirrel-cage asynchronous motors are manufactured by casting aluminum, and the rotor conductor, short-circuit ring and fan are cast into one, which is called cast aluminum squirrel-cage rotor. Compar...

AI Technical Summary

Problems solved by technology

However, due to defects such as sand holes in the die-casting rotor core, it is easy to cause the dynamic balance of the cast aluminum rotor to be unstable. It is necessary to increase the counterweight or remove part of the aluminum ring to achieve dynamic balance. The weight is used to stabilize the dynamic balance, so the matching size of the balance column and the balance weight is related to the safety of the motor operation. If the size of the cast aluminum rotor balance column after casting is too large, it needs to be manually repaired to make the diameter of the balance column meet the requirements.

Manual repairs are time-consuming and labor-intensive

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