Grinding and Clamping Device for Large Hollow Shaft Parts

Abstract

The invention discloses a grinding and clamping device for a large hollow shaft part. The grinding and clamping device comprises a positioning end plate, wherein a circle of first positioning step used for mounting the large hollow shaft part is arranged on the positioning end plate, and at least two mounting holes used for connecting a grinding machine workbench are formed in the positioning end plate; a core shaft is fixedly mounted at the center of the positioning end plate, and an external thread is arranged at the extension end of the core shaft. A core shaft mounting hole is formed in a positioning cone plate, and the positioning cone plate is arranged on the core shaft through the core shaft mounting hole in a sleeving manner and fastened on the core shaft through the matching of a compression nut and the thread part of the core shaft; a circle of second positioning step used for mounting the large hollow shaft part is arranged on the positioning cone plate, and an oblique plane is arranged on the step wall of the second positioning step; the second positioning step and the first positioning step are arranged oppositely, and the large hollow shaft part is clamped through the first positioning step and the second positioning step. The grinding and clamping device has the advantages of being simple in structure and high in processing precision and production efficiency.

Description

technical field [0001] The invention relates to a cylindrical grinding fixture in mechanical processing, in particular to a grinding and clamping device for large hollow shaft parts. Background technique [0002] At present, more and more large-scale hollow shaft parts are used, such as the second-stage input shaft of large wind power products. The inner holes at both ends of the second-stage input shaft are φ344 and the total length is 696.6. The outer circle is φ500.6+0.030, φ440.5+0.1 0, φ432.2+0.1 0, which is a large-scale shaft sleeve structure. The outer circle of the second-stage input shaft and the second-stage input gear mating section is φ500.6 +0.03 0 match, this match requires high dimensional accuracy, shape and position tolerance, and surface roughness. At present, for the three-stage processing technology of this large-diameter section φ500.6+0.03 0, φ440.5+0.1 0, and φ432.2+0.1 0, the three-stage outer circle is usually turned by turning to leave enough grin...

AI Technical Summary

Problems solved by technology

At present, for the three-stage processing technology of this large-diameter section φ500.6+0.03 0, φ440.5+0.1 0, and φ432.2+0.1 0, the three-stage outer circle is usually turned by turning to leave enough grinding allowances in MG21860 / Grinding on the R CNC vertical mill, the three-stage circular grinding must be turned over, hoisted and clamped to align the workpiece twice.

Moreover, the efficiency of the vertical mill itself is not high. Under this condition, it takes more than 9 hours to grind one piece. Not to mention the high cost, it also reduces the ability of the equipment to produce other parts

Therefore, the existing large hollow shaft parts are mainly outsourced, the independent production volume is very small, and the processing cost is very high.

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