Precise temperature control device and method for crankshaft bearing bush of mechanical press

Abstract

The invention relates to high-end equipment manufacturing industry, in particular to a precise temperature control device and method for a crankshaft bearing bush of a mechanical press.The device comprises a bearing bush temperature rise measuring system and a thin oil lubricating system, wherein the bearing bush temperature rise measuring system conducts precise temperature measurement on a bearing bush through the arrangement of a heat-sensitive material in a latticed structure; when the thin oil lubrication system carries out thin oil lubrication on the bearing bush, unique thin oil collecting structures are designed at the positions of the shaft end copper tile and the connecting rod copper tile respectively, thin oil can be collected and recycled, and the controller is connected with the bearing bush temperature rise measuring system and the thin oil lubrication system for control. The device is unique in structure, has the advantages of being efficient, precise, safe, reliable, intelligent and automatic in control, green, energy-saving, environment-friendly and the like, effectively improves the operation speed, transmission precision and intelligent and automatic production efficiency of the mechanical press, prolongs the service life of the bearing bush, improves the product quality, and achieves the remarkable effects of high-precision and high-speed rotation and precise and intelligent temperature control of the bearing bush of the mechanical press and the automatic line thereof.

Description

Technical field: [0001] The invention relates to the technical field of high-end equipment manufacturing industry, in particular to a precise temperature control device and method for a crankshaft bearing bush of a mechanical press. Background technique: [0002] At present, the crankshaft of the existing mechanical press and the bearing pad at the shaft end form a sliding friction pair and rotate relative to each other. Since the structural bearing pad of the existing mechanical press does not have a lubricating oil recovery device, the bearing pad at the shaft end is mostly lubricated intermittently with thick oil. For mechanical presses with low or low mechanical performance requirements, intermittent lubrication with thick oil can basically meet the requirements, but it cannot meet the requirements for high-speed, precision mechanical presses or automated production lines. Such as Figure 18 and 19 As shown in the schematic diagram of the structure of the existing mecha...

AI Technical Summary

Problems solved by technology

[0004] However, in the process of practical application, it is found that there are other deep-seated technical problems that need to be solved urgently. For example, the thick oil used in the thick oil intermittent lubrication scheme is very thick, and the lubrication effect of the crankshaft is relatively poor when the crankshaft rotates at high speed and precision, which is easy to cause the bearing bush to be damaged. Temperature rise restricts the improvement of speed and accuracy

Although some use thin oil lubrication systems, the existing thin oil lubrication systems are not specially designed for the lubrication of crankshaft bearing bushes. There are many problems in use, especially two points. The wear causes the gap to increase and the sealing effect is lost, causing oil leakage; second, the existing thin oil lubrication system does not have a special waste thin lubricating oil recovery device, resulting in oil pollution and potential safety hazards.

In addition, the existing thin oil lubrication system uses points to measure the local temperature of the bearing pad. This temperature measurement method cannot accurately reflect the real temperature rise and deformation of the bearing pad, and cannot effectively and accurately control the temperature rise of the bearing pad, resulting in unstable temperature control accuracy and poor rotation. Restricted linear speed, serious environmental pollution caused by oil leakage, etc.

The existing crankshaft bearing bush temperature control scheme cannot meet the requirements of high-speed, precise, precise and intelligently controlled mechanical presses and automated production lines

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