Device for accurately measuring depth of wire rod rolling groove

Abstract

The invention discloses a device for accurately measuring the depth of a wire rod rolling groove and relates to the field of measuring devices in machining. The device comprises a dial indicator which is fixedly arranged at the middle of a V-shaped support block by using a fixed screw, wherein a high-strength wear-resisting measurement head with the diameter of 0.3-0.5mm is arranged at the lower end of the dial indicator; an inverted V-shaped groove is formed in the lower part of the V-shaped support block; two sides of the inverted V-shaped groove are bottom surfaces positioned on the same horizontal plane; the dial indicator is arranged in an unthreaded hole on the center line of the inverted V-shaped groove. According to the device disclosed by the invention, the problem about accurate measurement for the depth of a groove with the width of smaller than 3mm and the depth tolerance of 0.01-0.05mm in the machining process and accurate measurement of the depth before surface defects of workpieces are eliminated are solved; the machining quality of the workpiece is guaranteed; the accurate measurement for the defect depth before the surface defects of the workpieces are eliminated is guaranteed, so that the waste of labor force and equipment capacity caused by mistaken measurement and judgment is avoided, and expenditure is reduced.

Description

technical field [0001] The invention relates to the field of measuring devices in mechanical processing, in particular to a device for accurately measuring the groove depth of wire and bar rolls in mechanical processing. Background technique [0002] There are many grooves on the wire bar roll, such as ring grooves, key grooves, V-shaped grooves, crescent grooves, etc. In the process of machining these grooves with lathes and milling machines, some grooves with a width less than 3mm or with special shapes and positions, and whose diameter or depth tolerance is required to be within 0.01-0.05mm are often encountered. The diameter or depth of such grooves is generally used Measuring tools (such as steel rulers, micrometers, calipers or depth gauges, etc.) may fail to meet the accuracy requirements or fail to measure. For example, if the groove width of the lathe is less than 3mm, since the diameter of the measuring head of the micrometer is greater than 3mm, it cannot touch t...

AI Technical Summary

Problems solved by technology

In the process of machining these grooves with lathes and milling machines, some grooves with a width less than 3mm or with special shapes and positions, and whose diameter or depth tolerance is required to be within 0.01-0.05mm are often encountered. The diameter or depth of such grooves is generally used Measuring tools (such as steel rulers, micrometers, calipers or depth gauges, etc.), or cannot meet the accuracy requirements, or cannot measure

For example, if the groove width of the lathe is less than 3mm, since the diameter of the measuring head of the micrometer is greater than 3mm, it cannot touch the bottom of the groove, so the diameter of the groove cannot be measured with a micrometer, and it cannot be measured with a depth gauge or a caliper. Accuracy requirements

The crescent groove on the arc groove of the rebar finished roll is located at the bottom of the arc groove and is not perpendicular to the axis of the arc groove. The depth relative to the arc groove is the distance from the lowest point of the arc groove to the lowest point of the crescent groove. The width of the crescent groove is between 0.4 and 2.5mm, which cannot be measured with general measuring tools

[0003] In addition, for material defects such as lack of meat, air holes, and slag inclusions on the surface of the workpiece, it is necessary to know the more accurate depth before lending processing. However, due to the small defect area and uneven bottom surface, it is difficult to measure with general measuring tools At the lowest point, it brings great difficulty to the lending process, and sometimes even due to measurement and judgment errors, the lending fails, resulting in a waste of manpower and equipment capabilities

Images