Shaft hole interference assembly automatic press mounting device and method

Abstract

The invention discloses shaft hole interference assembly automatic press mounting device and method. The automatic press mounting device comprises a workbench, a first manipulator, a second manipulator, a third manipulator, a three-jaw chuck, a press machine, a grating sensor, a multimeter, a control module, a waste product recycling tank, a first clamping groove, a second clamping groove and a third clamping groove; the first clamping groove, the second clamping groove and the third clamping groove are formed in the workbench; the press mounting sequence is as follows: shaft sleeve locating, shaft sleeve pressure testing, shaft locating, shaft hole press mounting, accuracy detection, F-S curve detection and assembly part fetching. According to the shaft hole interference assembly automatic press mounting device and method, the assembly accuracy is high, the reliability of an assembly part is good, the needed technical requirements can be well met, the reject rate is reduced, the press mounting efficiency is high, the whole structure is simple, the safety performance is good, the automation degree is high, the manpower and the material resources are greatly saved, and the shaft hole interference assembly automatic press mounting device and method are suitable for being popularized to various modernized shaft hole interference assembly automatic press mounting pipelines.

Description

technical field [0001] The invention relates to the field of press-fit technology, in particular to an automatic press-fit device and method for shaft hole interference fit. Background technique [0002] The interference connection has the advantages of good neutrality, strong bearing capacity, and can withstand a certain impact force. Therefore, it is widely used in mechanical assembly. Common interference fits include wheel set fit, coupling fit, connecting rod bushing, etc. Commonly used assembly forms are: [0003] (1) Press-in method, press in with a hammer and cushion block or press in with a press; [0004] (2) Thermal expansion method, using the principle of thermal expansion and contraction of objects, heating the hole to increase the diameter of the hole, and then loading the shaft into the hole, but because the size of the inner hole changes greatly after thermal expansion after heating, it is more suitable for interference Larger fit, the disadvantage is large...

AI Technical Summary

Problems solved by technology

[0004] (2) Thermal expansion method, using the principle of thermal expansion and contraction of objects, heating the hole to increase the diameter of the hole, and then loading the shaft into the hole, but because the size of the inner hole changes greatly after thermal expansion after heating, it is more suitable for interference Larger fit, the disadvantage is large deformation of the assembly;

In the press-fitting process of the shaft hole, due to the low centering accuracy of the shaft hole, when the shaft is pressed into the bushing, the shaft surface will be rubbed or even cut off by the entrance edge of the bushing hole, which seriously affects the quality of the press-fit parts and the yield is low. , causing waste of material

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