Part temperature control device for grinding processing
A temperature control device and grinding technology, applied in the direction of automatic grinding control devices, grinding machine parts, metal processing equipment, etc., can solve problems such as poor thermal conductivity, large thermal resistance, and decreased strength of grinding wheels, and achieve excellent Uniform temperature performance, high heat transfer efficiency, and the effect of avoiding direct friction
Inactive Publication Date: 2013-07-03
JIANGSU UNIV +1
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Problems solved by technology
In the Chinese patent—a brazed diamond heat pipe grinding wheel, patent number: ZL 200710190139.7, it is proposed that the heat pipe structure be built into the grinding wheel. The disadvantage is that the strength of the grinding wheel is greatly reduced due to the use of the built-in heat pipe. Materials such as additives have poor thermal conductivity, and the thermal resistance between the heat pipe and the grinding wheel is relatively large.
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[0011] like figure 1 As shown, the external cylindrical grinding and hardening process is taken as an example. When rough grinding the external circle, the grinding wheel 2 grinds the part 1 with suitable process parameters, so that the surface temperature of the part 1 is near the upper limit of the quenching critical temperature range. A connection block 10 is used on the outer surface of the part 1 to closely engage with the part 1. The connection surface on one side of the connection block 10 is an arc surface with the same basic size as the outer diameter of the part 1. The heat transfer end of the high-temperature heat pipe 7 Then it forms a gap fit contact with the hole on the other side of the connecting block 10, and a certain amount of heat-conducting glue 8 is filled at the contact junction, and a sealing ring 9 is used between the high-temperature heat pipe 7 and the connecting block 10 to prevent the heat-conducting glue 8 from extruding from the gap. When the hea...
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The invention relates to a part temperature control device for grinding processing. In a grinding quench hardening processing course, the change of the surface temperature of a part directly affects the quality of a heat-treated layer on the surface of the part. A high-temperature heat pipe is a good device for controlling heat transfer; in order to keep the temperature change of the part in the grinding quench hardening processing course low, the high-temperature heat pipe comes into contact with a part to be ground; the surface temperature of the part is detected in real time during grinding processing by means of an infrared radiation thermodetector; the contact area of the high-temperature heat pipe with a connection block and a thermal conductive adhesive is adjusted by driving a transmission structure unit using a PID (Proportion Integration Differentiation) controller, so that thermal contact resistance is reduced to transfer excessive heat outwards; therefore, the surface temperature of the part is adjusted, the requirement of controlling surface quenching is met, and technical support and foundation are provided for realizing automatic control of grinding process; and theapplication of the device may produce excellent economic and social benefits.
Description
technical field [0001] The invention relates to a device for controlling the temperature of the grinding zone on the surface of a part during grinding, which is particularly suitable for controlling the heat transfer in the grinding zone of the surface of the part during grinding and hardening, and belongs to the technical field of grinding . Background technique [0002] Grinding is a processing method that uses abrasives to remove material, and it is widely used in the production process of workpieces with high precision, high surface quality and high efficiency. Since grinding requires very high energy input to remove unit volume of material, almost all of this energy is converted into heat, of which 60% to 95% of the heat is transferred to the part and accumulated in a very thin surface layer, resulting in the surface temperature of the part sharply increased. When the grinding temperature is high, the metallographic structure of the surface layer of the part will chan...
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IPC IPC(8): B24B51/00
Inventor 程伟王贵成梁萍
Owner JIANGSU UNIV