Processing method of shaft head of printing press bent shaft board

Abstract

A processing method of a shaft head of a printing press bent shaft board comprises that a 1 mm thick layer of Fe-Cr-Mo-B alloy or aluminum oxide ceramic is sprayed and welded on the surface of the shaft head at first, and a wearing layer is then polished up. During utilization of the method provided by the invention, the wearing layer is integrated with the shaft head, a shaft sleeve in the prior art is canceled, and hidden dangers about cracking of the shaft sleeve and falling of the shaft sleeve during the utilization which will damage a printing press can be avoided.

Description

technical field [0001] The invention relates to a mechanical processing method, in particular to a processing method for a shaft head of a printing machine with a shaft. Background technique [0002] In order to increase the wear resistance of the shaft head, the shaft plate used for printing on high-speed printing machines usually adopts the method of shrink-fitting the shaft sleeve. The problems of this processing method of the shrink-fit shaft sleeve are: [0003] 1. The shaft sleeve needs to be customized, which increases the production cost and cycle time. [0004] 2. The quality of the shaft sleeve and the process quality of the shrink-fit shaft sleeve are likely to cause the shaft sleeve to crack, causing damage to the printing machine, and the customer claims to the company. [0005] 3. The heat-fitting process of the shaft sleeve is complicated, and the temperature, size matching accuracy and time in the operation require very precise control to achieve the goal. ...

AI Technical Summary

Problems solved by technology

[0003] 1. The shaft sleeve needs to be customized, which increases the production cost and cycle

[0004] 2. The quality of the shaft sleeve and the process quality of the shrink-fit shaft sleeve are likely to cause the shaft sleeve to crack, causing damage to the printing machine, and the customer claims to the company

[0005] 3. The heat-fitting process of the shaft sleeve is complicated, and the temperature in operation, the size matching accuracy, and the time requirements are very precise and controlled to achieve the goal

[0006] 4. The thickness of the shaft sleeve should be at least 5 mm, and the diameter of the shaft head should usually be reduced by 10 mm, which weakens the strength of the shaft