Measuring method and measuring apparatus for depth or end-face clearance of mechanical product cavity

Abstract

The invention discloses a method for measuring the cavity depth or the end surface gap of mechanical products and a measuring device thereof. The measuring method comprises the following steps: fixing a product to be measured; determining a contrastive datum plane; building a contrastive reference surface; creating contrastive reference data; arranging a plane disk sheet between an electronic probe and an end surface to be measured; clinging the bottom surface of the plane disk sheet to the end surface of the product; acquiring a measured data signal by the electronic probe; calculating the contrastive reference data of the contrastive reference surface in a microcomputer; and displaying the measuring result on a display screen. The measuring device mainly comprises a working table, a workpiece clamping seat, a vertical ledge, an electrical control mechanism and a measuring component; and the measuring component which comprises a position block and the electronic probe is arranged at the top of the workpiece clamping seat. The invention has the advantages that the measuring result for the first time is very close to the minimum value; the measuring data is accurate; and the measuring efficiency is high.

Description

Technical field: [0001] The invention relates to a detection device for a mechanical product, in particular to a method for measuring the cavity depth or end surface clearance of a mechanical product and a measuring device used in the method. Background technique: [0002] With the continuous improvement of machining technology and machining accuracy, and the industry has put forward higher and higher requirements for product accuracy, this also naturally puts forward higher requirements for measurement technology. For some products that require high precision and affect safety performance, online testing is required for each product. A typical example is the control of the depth of the pump cavity of the oil pump and the gap size between the rear end surface of the pump cavity and the end surface of the pump cavity. The purpose of the measurement of the depth of the pump chamber of the oil pump is to select the matching rotor according to the measured depth, so that the ro...

AI Technical Summary

Problems solved by technology

However, this extreme value can never actually be measured in practice

That is to say, the detection results of the existing detection methods and detection tools cannot meet the increasingly higher requirements for product accuracy in the industry, and the detection efficiency is low

Images