A heat dissipation grinding device with the function of measuring the temperature of the grinding surface

Abstract

The invention discloses a heat dissipation grinding device with a grinding surface temperature measuring function. The device comprises a main shaft, a bearing base, a first fixed plate, a grinding wheel, a second fixed plate, thermocouples, a cooling ring, a temperature acquirer and a controller; four insulation rings are mounted on the main shaft in an interference mode; solid electric conducting medium layers are coated on the outer surfaces of the rings; four electric conducting ball electric brushes are mounted on the second fixed plate; balls of the four ball electric brushes are alwayscontacted with the solid electric conducting medium layers; the cooling ring is mounted in the grinding wheel; multiple parallel thermocouples are embedded in the side wall of the grinding wheel; leads of the thermocouples and the cooling ring are electrically connected with the corresponding rings; the cooling ring is connected with the controller; the thermocouples communicate with the controller after parallel connection; and a ventilation hole communicating with an inner cavity of the grinding wheel is formed in the top of the grinding wheel. The device can realize real-time temperature measurement of grinding surfaces through the thermocouples, and enables the controller to control the cooling ring to work to reduce the temperature of the grinding wheel, so that the temperature of thegrinding surfaces is lowered, and the burnout of the grinding surfaces is prevented.

Description

technical field [0001] The invention belongs to the technical field of grinding equipment, and in particular relates to a heat dissipation grinding device with the function of measuring the temperature of the grinding surface. Background technique [0002] During the grinding process, the intense interaction between the abrasive grains on the grinding wheel grinding surface and the surface of the workpiece will often generate high temperature, which will cause thermal damage to the processed surface of the workpiece and affect the processing quality. At present, there are many ways to reduce the grinding temperature, such as using grinding fluid to cool down; installing a cooling fan in the grinding wheel; slotting the grinding wheel for intermittent grinding; diaphragm vibration to accelerate air flow for heat dissipation, etc. [0003] The temperature measurement of the grinding surface has always been a difficult point in the research of grinding temperature. Since the gr...

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Problems solved by technology

[0003] The temperature measurement of the grinding surface has always been a difficult point in the research of grinding temperature. Since the grinding surface is not exposed to the outside during grinding, the temperature of the contact edge between the grinding wheel and the workpiece can only be detected by measuring equipment such as infrared thermal imaging cameras. Difficult to measure temperature directly

[0004] The Chinese patent with the application number 201910102784.1 discloses a grinding device, which adopts a circular cooling nozzle, and the cooling nozzle sprays cooling water on the grinding surface at a flow rate of 1L / min to reduce the temperature of the grinding surface; However, this grinding device does not have a grinding surface temperature detection device, but only regularly cools the grinding surface, and cannot detect the temperature of the grinding surface in real time. When the temperature of the grinding surface does not exceed the threshold value, the cooling nozzle will also flow to the grinding surface. Spray cooling water, causing energy waste

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