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Four-point description of the heat dissipation prominent design of high-speed punch press


Release time:

2024-02-04

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The prominent design of thermal state is to find the perfect temperature field distribution and the comprehensive stiffness distribution of the structure from the physical structure shape and various parameters of the high-speed punch when there is a heat source, so as to control the thermal displacement of the high-speed punch and ensure the accuracy of the high-speed punch. Using the concept of "thermal symmetry plane", the thermal symmetry structure or heat source distribution is designed, and the characteristics of the symmetrical structure are used to offset the stress and strain caused by thermal deformation. In the design of high-speed punch press, as far as possible the use of symmetrical structure, such as precision punch base and beam with four fastening screws fastening, so the body rigidity, small deformation. Support structure for four-point crankshaft

Four-point descriptionhigh speed punch pressHeat Dissipation Prominent Design

1. Reasonable optimization design of punch structure

The prominent design of thermal state is to find the perfect temperature field distribution and the comprehensive stiffness distribution of the structure from the physical structure shape and various parameters of the high-speed punch when there is a heat source, so as to control the thermal displacement of the high-speed punch and ensure the accuracy of the high-speed punch. Using the concept of "thermal symmetry plane", the thermal symmetry structure or heat source distribution is designed, and the characteristics of the symmetrical structure are used to offset the stress and strain caused by thermal deformation. In the design of high-speed punch press, as far as possible the use of symmetrical structure, such as precision punch base and beam with four fastening screws fastening, so the body rigidity, small deformation. The support structure is a four-point crankshaft support structure, which can increase the strength of the crankshaft and reduce deformation.

2. Effective separation of heat source

The main idea is to combine the heat sourcehigh speed punch pressBody separation, reducing heat. The structure of precision punch is designed from the perspective of thermal stiffness of high-speed punch. Considering the design of static stiffness, dynamic stiffness and thermal stiffness of precision punch as a whole, heat capacity balance design is also an effective method to reduce thermal deformation. Due to the different parts and materials of the machine tool, the heat capacity is also different. Therefore, for the part with large heat capacity, the method of controlling temperature rise or heat transfer is used to reduce the temperature difference with other zero systems with small heat capacity, so as to achieve the relative balance of the temperature of the entire high-speed punch.

3, reduce the heat source

Forhigh speed punch press, There is a large relative speed on the friction surface of the relative movement, resulting in serious frictional heat generation, which not only accelerates the wear and deterioration of the parts, but also reduces their service life. In order to reduce the heat generation, it can be considered from the perspective of its characteristics, The friction coefficient of each moving surface of the high-speed punch should be as small as possible, in particular, the design of moving parts such as crankshaft and connecting rod, crankshaft and bed space, transmission shaft and bed should consider reducing frictional heat to reduce heat generation. Therefore, seeking new materials with higher cost performance is one of the best solutions.

4. Strengthen the heat dissipation of high-speed punch

Improve the heat dissipation strip at each heat source of the high-speed punch press, improve the heat exchange coefficient, and enhance the heat dissipation area.