Adjustable opening measuring scale

Abstract

The invention provides an adjustable opening measuring scale. Two slip rotating bases of hollow cylindrical sleeve structures are arranged on a measuring scale main rod in a sleeving manner, the sliprotating bases can move front and back and rotate on the measuring scale main rod, locking nuts are connected to the slip rotating bases through threads, the locking nuts can be screwed to fix the slip rotating bases on the measuring scale main rod, a measuring head is connected to each slip rotating base through threads, the end part of the measuring head is conical, base limiting end covers forpreventing the slip rotating bases from sliding out from the measuring scale main rod are arranged at both ends of the measuring scale main rod, a long ruler is used for measuring the actual distancebetween tip locations of the two measuring heads, so as to measure the distance between any two points; and the the measuring head can slide back and forth and rotate with the slip rotating bases, itcan be ensured that the tip location of the measuring head coincides with the center point of a measured cross line, the measuring head can be replaced to achieve different measurement purposes, and the adjustable opening measuring scale provided by the invention has a simple structure and a good measurement effect.

Description

technical field [0001] The invention belongs to the field of detection devices in the process of growing the physical size of automobile bodies, and relates to an adjustable opening measuring ruler device. Background technique [0002] During the size development process of the physical stage of the automobile body-in-white, it is necessary to place the sub-assemblies welded into the body frame in the frame PCF inspection tool to describe the cross lines, and measure the intersection points of the cross lines drawn by the left and right side sub-assemblies. Record the overall distance between the left and right sides of the body frame; and the major frame sub-assemblies that complete the PCF process will be welded on the frame welding line. The center point of the left and right cross lines depicted on the PCF gauge was measured before, in order to achieve the purpose of comparative analysis with the value measured on the PCF gauge, and then gradually analyze the reason for ...

AI Technical Summary

Problems solved by technology

When the misalignment of the center point of the left and right cross lines is serious, the vernier of the traditional vernier measuring ruler can only slide and cannot rotate the angle, so the measurement cannot be realized when the above measurement task is completed, and the traditional vernier measuring ruler is limited by the shape of the body. Large, low degree of flexibility, unable to adapt to the current short-cycle diversified model projects

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