Device and method for positioning and measuring position of a piston ring groove in automatic piston assembly

Abstract

The invention discloses a device and a method for positioning and measuring a position of a piston ring groove in automatic piston assembly. The device comprises a tray, a piston, a camera, a liftingservo sliding table, a pressing head and an image recognition and calculation unit, wherein the piston has a ring groove and is arranged in a groove of the tray; the camera is arranged on one side ofthe piston; the lifting servo sliding table is arranged above the tray; the pressure head is provided with a piston ring and is arranged on the lifting servo sliding table; and the image recognition and calculation unit is in signal connection with the camera and is in driving connection with the lifting servo sliding table. The device and the method adopt a visual system non-contact measurement mode, can position the position of the piston ring groove simply, conveniently, reliably and efficiently, and provide a reliable basis for flexible and automatic assembly of the piston ring.

Description

technical field [0001] The invention relates to the piston automatic assembly technology in the field of engines, in particular to a positioning and measuring device and method for the position of the piston ring groove in the automatic piston assembly. Background technique [0002] During the flexible automatic assembly process of the engine piston assembly, it is an essential link to assemble three piston rings on the piston. In this link, on the one hand, the piston ring groove and the piston ring assembly and matching precision are required to be high; As a result, when the piston ring is assembled by the equipment for assembling the piston ring, the piston ring cannot be correctly aligned with the position of the piston ring groove on the piston, which brings difficulties to the flexible automatic assembly of the piston assembly. Therefore, at present, the factory has been using single-variety special machine semi-automatic assembly or manual assembly in its assembly p...

AI Technical Summary

Problems solved by technology

In this link, on the one hand, the piston ring groove and the piston ring assembly and matching precision are required to be high; As a result, when the equipment for assembling piston rings is assembling the piston rings, the piston rings cannot be correctly aligned with the position of the piston ring groove on the piston, which brings difficulties to the flexible and automatic assembly of the piston assembly

Therefore, at present, the factory has been using semi-automatic assembly of single-variety special plane or manual assembly in its assembly process, which cannot realize multi-variety flexible automatic assembly production

The fundamental reason is that the position of the piston ring groove relative to the equipment cannot be accurately and conveniently located

In addition, the existing method of directly measuring the position of the piston ring groove with a measuring tool needs to contact the workpiece, which may cause surface damage of the part, which cannot meet the requirements

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