Cylindrical grinding machine grinding wheel spindle bearing oil groove milling head device

Abstract

The invention relates to a cylindrical grinding machine grinding wheel spindle bearing oil groove milling head device which comprises a vertical milling machine and a support extending transversely, the vertical milling machine is provided with a vertical milling head, the milling head is provided with a milling cutter driving shaft, the mounting end of the support is fixedly mounted below the milling head, and the tail end of the support is provided with a tail end milling cutter extending downwards. The tail end milling cutter is in transmission connection with the milling cutter driving shaft through a tail end transmission mechanism, the tail end transmission mechanism is a belt transmission mechanism, a driving wheel of the tail end transmission mechanism is installed on the milling cutter driving shaft, and a driven wheel of the tail end transmission mechanism is installed on a cutter handle of the tail end milling cutter. A cutter handle of the tail end milling cutter is rotationally installed at the tail end of the support through a bearing, the support is made of long and thin U-shaped steel, and the tail end transmission mechanism is arranged in a groove of the U-shaped steel. The method is suitable for machining structures such as a main shaft bearing oil groove, milling resistance can be greatly reduced, vibration, deformation and heating of a cutter and a machined part in the milling process are relieved, and machining quality is improved.

Description

technical field [0001] The invention relates to an oil groove milling head device for a grinding wheel spindle bearing of an outer cylindrical grinder, belonging to the technical field of machinery. Background technique [0002] With the modernization and development of my country's machinery industry, the requirements for high efficiency of parts processing and compressed processing time are increasing day by day. Correspondingly, the processing efficiency of cylindrical grinders is also improving, and the grinding feed rate of the outer circle and end face of parts is increased. Large, and the increase of the load of the large-size grinding wheel has caused an increase in the "holding shaft" failure of the grinding wheel spindle, which shows the limitations of existing milling machines in processing related workpieces. [0003] For example, the existing grinding wheel spindle dynamic and static pressure bearing is made of powder metallurgy sintering of steel sleeve (steel b...

AI Technical Summary

Problems solved by technology

Since the bearing is a bimetallic material, when processing the lead bronze layer, the feed rate is 0.2mm each time. When it is close to the steel substrate, the feed rate is changed by 0.05mm each time. This processing method is prone to the following problems: when the speed is too high It will cause broaching to crawl; when the speed is too high, it will cause broaching vibration; when the turning tool is blunted and the rake angle is improper, it will cause oil scales on the surface of the workpiece. , resulting in the size of the oil groove, the processing quality of the surface roughness is not high

In addition, due to the need to process four oil grooves uniformly distributed on the circumference, the previous process needs to draw a line on the inner hole of the bearing (saving the time of using the dividing head, but reducing the processing accuracy), in each oil groove, the turning tool is repeatedly advanced To, also cause low processing efficiency

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