Detection tool

Abstract

The invention discloses a detection tool for detecting a device, and the tool comprises a main scale, a rotating fixed arm, a rotating moving arm, and a vernier. The main scale comprises a first scale, a second scale, a first installation block, and a second installation block. Two ends of the first scale and two ends of the second scale are respectively in fixed connection with the first installation block and the second installation block, thereby forming a frame-shaped structure with a central groove. The rotating fixed arm is installed at one end of the main scale, and the rotating fixed arm is provided with a rotatable first measuring arm. The rotating moving arm is disposed on the main scale, and is in sliding fit with the central groove. The rotating moving arm is provided with a rotatable second measuring arm. The vernier is disposed on the main scale, and is in sliding fit with the central groove. The tool can measure the size of an intersection line or a distance between intersection points of two planes or more planes with rounded angles and chamfers.

Description

technical field [0001] The invention relates to a dimension detection device. Background technique [0002] There are mainly three methods for measuring the intersection line or intersection point size of two or more sides with rounded corners and chamfers in the current casting and forging blanks, mold cavities, and some finished parts. 1. Put the workpiece to be measured on a three-coordinate measuring instrument for measurement. The advantage of this method is that the measurement data is accurate and reliable. The disadvantage is that an expensive three-coordinate measuring instrument is required, and the measurement cost is high and the efficiency is very low. It is not suitable for batch testing ; 2. Make a profiling test sample according to the workpiece part that needs to be tested, clamp the sample to the measured part, and measure with a feeler gauge. The advantage of this method is that the measurement efficiency is high, but the disadvantage is that one measurem...

AI Technical Summary

Problems solved by technology

1. Put the workpiece to be measured on a three-coordinate measuring instrument for measurement. The advantage of this method is that the measurement data is accurate and reliable. The disadvantage is that an expensive three-coordinate measuring instrument is required, and the measurement cost is high and the efficiency is very low. It is not suitable for batch testing ; 2. Make a profiling test sample according to the part of the workpiece that needs to be tested, clamp the sample to the part to be measured, and measure with a feeler gauge

The advantage of this method is that the measurement efficiency is high, but the disadvantage is that one measurement template can only measure one size of one kind of workpiece, and mass-produced products require a large number of inspection samples, and the detection accuracy is greatly affected by the proficiency of the inspectors. The stability and reliability are low; 3. Use a vernier caliper to measure the cut-off point size of the fillet and chamfer, and then calculate the intersection point size

The disadvantage of this method is that the cut-off point of the fillet and chamfer of the tested part cannot be accurately positioned, and the measurement error is large

[0003] At present, for the size inspection of blanks produced in batches, the inspection of key dimensions generally relies on the inspection model, and the inspection of other dimensions is less, and the product has a greater quality risk

Images