Precision sliding table for multi-workpiece parallel vision measurement

Abstract

The invention discloses a precision sliding table for multi-workpiece parallel vision measurement. The precision sliding table comprises a portal frame vision acquisition mechanism 100, a carrying plate 200, a driving radial lead screw and nut mechanism 300, a fixing plate 400, a driving axial lead screw and nut mechanism 500, a driven axial sliding block mechanism 600 and a driven radial slidingblock mechanism 700; a portal frame and an acquisition camera are fixedly connected so as to form the portal frame visual acquisition mechanism 100; the loading plate 200 clamps a workpiece to finishprecise movement in an axial direction, a radial direction and a circumferential direction through the cooperative work of the driving axial lead screw and nut mechanism 500, the driving radial lead screw and nut mechanism 300, the driven axial sliding block mechanism 600 and the driven radial sliding block mechanism 700, so that the high-precision measurement and reconstruction of the workpiece are achieved. Driving motors on the lead screw and nut mechanisms achieve automatic control precision rotation through communication between an upper computer and a lower computer; hand wheels are arranged, so that manual adjustment is facilitated, and therefore, the adaptability of the precision sliding table to a working environment is good; the fixing plate 400 is provided with a proximity switch sensor and a limiting switch and used for feeding back the operation position of the workpiece in real time and achieving the self-protection of the device during work faults; and the carrying plate200 of the precision sliding table can clamp a plurality of workpieces simultaneously. The precision sliding table meets the task requirements of various visual acquisition modes including monocularvision measurement, binocular vision measurement and structured light measurement; and the precision sliding table has the advantages of high adaptability, high automation degree, and high practicability in the field of machine vision measurement.

Description

technical field [0001] The invention belongs to the technical field of machine vision measurement, in particular to a precision slide table for parallel vision measurement of multiple workpieces. Background technique [0002] Machine vision measurement technology uses cameras, proprietary fixtures and other equipment to take dynamic or static shots of the object to be measured to obtain a sequence or single frame of images. The application of vision measurement can accurately measure complex structures. In the actual industrial measurement environment, if the surface shape of the workpiece to be measured is complex or multiple workpieces are measured in parallel at the same time, it is difficult for the acquisition camera to obtain the complete shape in a single measurement. It is necessary to capture the camera from multiple angles and match the features of multiple pictures Reconstruct the image. During the measurement process, if the position of the workpiece is fixed, t...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a precision sliding table for parallel visual measurement of multiple workpieces, which can fix the position of the acquisition camera and precisely control the movement of the loading platform for clamping multiple workpieces, so as to solve the problem of repeated calibration of cameras in the current visual measurement, the efficiency is not high and the The problem of inaccurate measurement and positioning

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