High-precision thick foil scissor cutter shaft system

Abstract

The invention discloses a high-precision thick foil scissor cutter shaft system. A cutter shaft is in a forging integrated type, a supporting bearing at the rear end of the front part of the cutter shaft system is a cylindrical roller bearing, wherein an inner ring of the cylindrical roller bearing is a conical face, the inner ring and an outer ring of the cylindrical roller bearing are separable, and the inner ring is completely fixed on the cutter shaft through a nut. Two spacer bushes are mounted between a first angular contact ball bearing and a second angular contact ball bearing at the front end of the front part of the cutter shaft system, the inner ring is locked on the cutter shaft through the nut. The supporting bearing at the rear end of the cutter shaft system is the cylindrical roller bearing with the inner ring being the conical face and the inner ring and the outer ring being separable, the inner ring of the bearing can be fixed on an inner conical sleeve through the nut, a separation ring is arranged on the inner ring of the bearing, and an outer conical sleeve is fixed on the cylindrical face of the rear end of the cutter through a screw. The high-precision thick foil scissor cutter shaft system can obviously improve the cutting precision, the heating problem of the bearings in the high speed operation process is solved, mounting and adjusting are convenient, and the production efficiency of shearing equipment is improved.

Description

technical field [0001] The invention relates to a cutter shaft system device used for a cutter holder of a metal strip longitudinal shearing device. Background technique [0002] Thick foil shears and disc shears are the main equipment for longitudinal shearing of steel and non-ferrous metal strips. Their main function is to cut the coiled strips into strips of specified width according to the corresponding functions. The cutter shaft system device is the core component of each shearing equipment, and its rotation accuracy directly determines the shearing accuracy of the shearing equipment. However, the traditional mechanical structure of the cutter shaft system is not reasonable enough. Disassembly is more complicated, which affects the efficiency of equipment operation. At present, the domestic conventional thick foil scissors shaft structure is as follows: figure 1 As shown, its main problems are: [0003] 1. The rear end of the front part of the cutter shaft system is...

AI Technical Summary

Problems solved by technology

[0003] 1. The rear end of the front part of the cutter shaft system is installed with cylindrical roller bearings. The clearance of the bearings cannot be precisely controlled, and once the installation is completed, the clearance cannot be adjusted. When the cutter shaft rotates at a high speed, the bearing may vibrate slightly or Friction heating and other issues

[0004] 2. Three angular contact ball bearings are installed on the front end of the front part of the cutter shaft system, and the adjacent two bearings of the three angular contact ball bearings are installed with inner and outer spacers, so that the clearance of this part of the bearings can be adjusted , but it greatly increases the difficulty of processing and assembly, and the cumulative error is large

[0005] 3. The cutter shaft is a welded part with low precision, and the tail is a tapered surface. The tapered surface needs to cooperate with the inner tapered sleeve, so the precision is high and the processing is difficult. Moreover, once the cutter shaft is worn, it is difficult to repair the tapered surface.

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