Sewing machine bottom plate machining method and lower shaft hole and edge shaft hole machining device

Abstract

The invention discloses a sewing machine bottom plate machining method and a lower shaft hole and edge shaft hole machining device. According to the sewing machine bottom plate machining method and the lower shaft hole and the edge shaft hole machining device, the machining efficiency of a sewing machine bottom plate is improved conveniently, and meanwhile, when a deep hole is machined, a cutter cannot be affected by gravity, the coaxiality of a lower shaft hole and an edge shaft hole is high, and the machining condition of a workpiece can be observed in time.

Description

technical field [0001] The invention relates to the field of sewing machine parts processing, in particular to a processing method for a sewing machine bottom plate and a processing device for a lower shaft hole and a side shaft hole. Background technique [0002] The current sewing machine bottom plate has many processing steps, and a large number of jobs need to be set up to process the sewing machine bottom plate, which requires a lot of labor. At the same time, because it is all single-station single-workpiece processing, the workpiece needs to be disassembled and clamped multiple times. It takes a lot of time and the production efficiency is relatively low; the bottom plates of sewing machines on the market are all processed by horizontal machine tools. When the horizontal machine tools are processing the bottom plates of sewing machines, especially when processing relatively deep holes , due to the influence of gravity, there will be relatively large machining errors, ...

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Problems solved by technology

[0002] The current sewing machine bottom plate has many processing steps, and a large number of jobs need to be set up to process the sewing machine bottom plate, which requires a lot of labor. At the same time, because it is all single-station single-workpiece processing, the workpiece needs to be disassembled and clamped multiple times. It takes a lot of time and the production efficiency is relatively low; the bottom plates of sewing machines on the market are all processed by horizontal machine tools. When the horizontal machine tools are processing the bottom plates of sewing machines, especially when processing relatively deep holes , due to the influence of gravity, there will be relatively large machining errors, which will affect the machining accuracy of the lower shaft hole and the side shaft hole; when the current sewing machine bottom plate is processed, the lower shaft hole and the side shaft hole are finished. , multiple lower shaft holes and side shaft holes on a sewing machine base plate are finished sequentially (after the lower shaft holes and side shaft holes on a partition are processed, the other lower shaft holes and side shaft holes are processed) , so that the concentricity between the lower shaft holes and the side shaft holes on the bottom plate of the sewing machine is not high, which affects the rotation of the lower shaft and the side shaft of the sewing machine;

[0003] At the same time, most of the current positioning fixtures use six-point positioning. When clamping, it is necessary to align the mounting holes on the sewing machine bottom plate with the positioning pins. This positioning method takes a long time, which wastes a lot of time and the processing efficiency of the bottom plate is low. Low; when the current four-axis turntable is processing, when the base plate of the fixture is facing outward and the workpiece is facing inward, the staff cannot see the processing of the workpiece, so that the processing of the workpiece can be seen through mirror reflection

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