Bearing pedestal milling drilling and grinding tool

Abstract

The invention discloses a bearing pedestal milling drilling and grinding tool. The bearing pedestal milling drilling and grinding tool comprises a milling drilling grinding and turning base plate assembly. A four-conical-head cross shaft is fixedly arranged in the center of the milling drilling grinding and turning base plate assembly, and inner holes of bearing pedestals sleeve the four-conical-head cross shaft. The bearing pedestal milling drilling and grinding tool further comprises spring sleeves. The spring sleeves are arranged at the cross stretching ends of the four-conical-head cross shaft in a sleeving mode and located between the four-conical-head cross shaft and the bearing pedestals. The bearing pedestal milling drilling and grinding tool further comprises press plates, whereinthe press plates are arranged between the spring sleeves and the bearing pedestals. The bearing pedestal milling drilling and grinding tool further comprises screws. The screws pass through bolt holes, are screwed into the press plates and enable the press plates to press the spring sleeves. According to the bearing pedestal milling drilling and grinding tool, the locating accuracy of the bearingpedestals is improved by use of a spring sleeve tensioning mode.

Description

technical field [0001] The invention relates to a cross shaft of a cardan shaft coupling, in particular to a milling, drilling and grinding tool for a bearing seat. Background technique [0002] In the universal joint cross shaft assembly, the bearing seat is a key part. This part has a complex structure and thin wall thickness, and requires carburizing and quenching treatment. Moreover, the "convex key" of this part requires high precision and higher roughness requirements. Generally, it is required to reach Ra 1.6μm, especially the "convex key" and "bolt hole" on the bearing seat, the position accuracy requirements for the inner hole more stringent. [0003] In the prior art, the following problems are prone to occur in the processing of the bearing seat: 1. There is inner hole deformation. 2. Poor position: (1) The symmetry of the convex key is poor. The main reason is that the positioning accuracy of the bearing seat fixture is not high, and there is a gap between the ...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the processing of the bearing seat is prone to the following problems: 1. There is inner hole deformation

2. Poor position: (1) The symmetry of the convex key is poor. The main reason is that the positioning accuracy of the bearing seat fixture is not high, and there is a gap between the inner hole of the bearing seat and the positioning shaft of the fixture; (2) There is no measurement reference ; (3) The bolt holes are biased and not vertical. Generally, the bolt holes are vertically deflected by a few millimeters. The main reason is that the bolt holes are very deep.

[0004] The above-mentioned problems in the prior art are mainly due to the fact that the bearing housing is a thin-walled part, and the requirements for the force direction and force point of the clamping force are very high. The prior art cannot solve the problem of "clamping force" and "positioning". Accuracy", "measurement" and other issues, so it is difficult to make qualified products

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