Positioning method for acting pieces for radial opening device

Abstract

The invention discloses a positioning method for acting pieces for a radial opening device to be applied to the micro assembly field. The radial opening device comprises a micro vision device, a fixing seat, an adjusting module, an ultrasonic motor and the acting pieces. The ultrasonic motor and the acting pieces are connected through a flexible mode. According to the positioning method, difficulties during arrangement of lenses in a plurality of horizontal directions can be avoided, and positioning to the acting pieces in a vertical direction under the situation of being only perpendicular to micro vision lenses can be achieved. Simultaneously, due to the arrangement of the micro vision lenses in the horizontal direction, the complexity of the radial opening device is simplified.

Description

technical field [0001] The invention relates to the field of assembly of tiny parts, in particular to a positioning method for an active part of a radial expansion device. Micro-assembly sometimes uses a radial expansion device to expand the tiny parts to be assembled in the radial direction. At this time, the radial expansion device pulls the parts to be expanded through its active part-the hook. After the parts are spread radially, other parts can be embedded in it conveniently. Background technique [0002] In the field of micro-assembly, the assembly of some parts sometimes needs to be radially expanded. For example, during the target assembly process of a large laser-driven target shooting device, the aluminum cylinder needs to be inserted into the silicon wafer. This requires the radial expansion device to pull the sixteen protrusions on the silicon wafer radially through its active part-the draw hook, and then insert the aluminum cylinder into the ring in the middle...

AI Technical Summary

Problems solved by technology

However, in the process of realizing the present invention, the inventors found that since there are multiple pull hooks to pull the protrusions of the silicon wafer to achieve radial expansion, there will be two difficulties that are difficult to overcome when observing with a lens arranged in a horizontal direction.

One difficulty is that the space is compact (the diameter of the head of the silicon chip is only about 10mm), and it is difficult to arrange multiple lenses placed in the horizontal direction; another difficulty is that even if multiple lenses are arranged in the horizontal direction, due to the light in the horizontal direction It is impossible to clearly observe the positioning of each pull hook due to the overlapping of pull hooks on the road and other raised occlusions

And if there is no observation in the horizontal direction, the vertical gap (perpendicular to the plane of the silicon wafer) between the hook and the part to be opened (such as a silicon wafer) cannot be detected in real time, and the assembly process is therefore difficult to complete accurately

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