Pneumatic clamping device, pin positioning system, drilling machine and machining precision compensation method

Abstract

The invention relates to the field of drilling machines, and discloses a pneumatic clamping device, a pin positioning system, a drilling machine and a machining precision compensation method. The pneumatic clamping device comprises a clamping block seat, a clamping block assembly and a driving assembly, wherein a first positioning groove and a sliding groove are formed in the clamping block seat, the clamping block assembly comprises a first clamping block and a second clamping block which are arranged in the sliding groove in a sliding mode, a second positioning groove is formed in the first clamping block, and the first clamping block and the second clamping block are movably connected through inclined matching faces. The driving assembly is used for driving the second clamping block, so that the first clamping block and the second clamping block synchronously slide in the sliding groove, and then the first positioning groove and the second positioning groove clamp or loosen the pin to be detected. According to the pneumatic clamping device, the pin positioning system, the drilling machine and the machining precision compensation method, the situation that the pin moves up and down due to vibration in the machining process is avoided, the maintenance cost is reduced, the positioning precision and stability of the pin are improved, and the machining precision of a machined board is improved.

Description

technical field [0001] The invention relates to the field of drilling machines, in particular to an air clamp device, a pin positioning system, a drilling machine and a machining accuracy compensation method. Background technique [0002] In the production process of printed circuit boards, in order to facilitate the connection between circuit layers and the installation of electronic components in the later stage, it is necessary to use a drilling machine to drill holes on the processing board, and to mill and shape the PCB board according to the design requirements. [0003] At present, there are two ways of positioning the processing board of the PCB drilling machine. One is the positioning of the bakelite pin. holes, use a pin-hole fit to secure the finished board to the bakelite board. Bakelite boards are fixed with porous positioning, and the positioning accuracy is high, but different types of boards need to be re-drilled for positioning, which is time-consuming and ...

AI Technical Summary

Problems solved by technology

The positioning efficiency of the air clamp is high, but the positioning accuracy is lower than that of the bakelite board. The size change of the outer diameter of the pin will affect the positioning accuracy of the air clamp, and the outer diameter of the pin cannot be confirmed before processing and use. It is necessary to manually use a new pin and do it manually again. Adjusting the position of the air clamp by dialing a meter is low in efficiency, high in risk, and high in labor costs. At present, the conventional sliding fit method adopted by the air clamp in the industry cannot guarantee the positioning accuracy and stability of the air clamp due to the movable gap between the slider and the chute.

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