High-speed grinding machine

Abstract

The invention discloses a high-speed grinding machine, aiming at providing the high-speed grinding machine with good dustproof effect and lower incidence rate of fault. The high-speed grinding machine comprises an adjusting base (1), a motor shell (2) and a protective hood (3); the tail part of the adjusting base (1) is in threaded connection with the front end of the motor shell (2); the motor shell (2) is provided with at least one air inlet and a filter ring (6) covering the air inlet; the protective hood (3) is in threaded connection with an external thread on the side wall of the motor shell (2) and covers the rear end of the filter ring (6); and the filter ring (6) is made from a filter material capable of allowing flowing of fluid and blocking dust. The invention can be widely applied to the fields of grinding machines.

Description

technical field [0001] The invention relates to a high-speed grinding machine. Background technique [0002] With the development of science and technology and the progress of society, high-speed grinding machines have been widely used in all walks of life. and the motor, the motor is arranged inside the motor shell, a spring connecting device is connected between the inner core and the motor shaft, the front end of the connecting seat is provided with an external thread to thread the front shell, and the rear end is provided with an internal thread to thread the motor shell, and In order to prevent the motor from being damaged or scalded by the user due to excessive temperature, several air inlet holes are provided on the motor casing at the rear where the connecting seat is connected to the motor casing, and an air outlet hole is arranged on the carbon brush seat behind the motor casing. However, the existing method is easy to cause dust to enter the motor casing, causing...

AI Technical Summary

Problems solved by technology

[0002] With the development of science and technology and the progress of society, high-speed grinding machines have been widely used in all walks of life. and the motor, the motor is arranged inside the motor shell, a spring connecting device is connected between the inner core and the motor shaft, the front end of the connecting seat is provided with an external thread to thread the front shell, and the rear end is provided with an internal thread to thread the motor shell, and In order to prevent the motor from being damaged or scalded by the user due to excessive temperature, several air inlet holes are provided on the motor casing at the rear where the connecting seat is connected to the motor casing, and an air outlet hole is arranged on the carbon brush seat behind the motor casing. However, the existing method is easy to cause dust to enter the motor casing, causing the motor shaft and bearing to be stuck, resulting in a short circuit of the grinder, resulting in frequent failures. At the same time, the structure of the conductive sheet on the existing carbon brush holder is simple. The connection between the conductive sheet and the conductive cylinder of the power plug is a curled ring, which is easy to loose after being plugged and pulled out too much with the conductive cylinder of the power plug, and the poor contact makes the stability of the electrical connection poor.

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