Size measuring instrument

Abstract

The invention discloses a size measuring instrument which comprises an arc-shaped ruler. The arc-shaped ruler is provided with an arc-shaped groove, one end of the arc-shaped ruler is connected with an upper end of a left ruler, a lower end of the left ruler is hinged to the lower end of a right ruler, a locking piece is arranged at the upper end of the right ruler, and one end of a locking piecepenetrates through the arc-shaped groove and is connected with the right ruler. A sector width, a sector height, a sector angle and an approximate circle radius of special-shaped conductors of different specifications and angles can be measured simultaneously, operation is easy and convenient, conversion is not needed, reading is simple and visual, measurement can be directly performed on a production line, problems can be found and rapidly adjusted, the conductors are saved, and wastes are reduced.

Description

technical field [0001] The invention relates to a measuring instrument, in particular to a dimension measuring instrument. Background technique [0002] Wire and cable stranded conductors are round, semicircular, fan-shaped and tile-shaped, etc. High-voltage cross-linked cable split conductors generally have several structures such as four-split, five-split, six-split, and seven-split. The split strands also have fan-shaped and Corrugated and other shapes. [0003] In actual production, in order to ensure product quality, it is necessary to strictly control various parameters of the special-shaped conductor, and it is necessary to measure the fan width, fan height, fan angle and approximate circle radius of the special-shaped conductor. At present, vernier calipers and simple blocks are used for size measurement. Vernier calipers are used to measure fan width and fan height. Due to factors such as operating methods, irregular conductors cannot be fixed, and irregular shapes...

AI Technical Summary

Problems solved by technology

At present, vernier calipers and simple clamping blocks are used for dimension measurement, and vernier calipers are used to measure fan width and fan height. Due to factors such as operation methods, unfixed special-shaped conductors, and irregular shapes, it is impossible to measure accurately; simple clamping blocks are used to measure approximate circle diameters. The vernier caliper measures the distance from the highest point to the bottom of the clamping block to obtain the fan height, and then converts the outer diameter of the conductor cable. However, this measurement cannot verify whether the bottom angle of the divided conductor is accurate. For direct measurement of the fan width and fan height with a caliper , there are many inaccurate factors, because the highest point of the fan cannot be accurately found, and the divided conductor cannot be fixed, and the slight movement of the conductor will cause deviations in the measurement data. At the same time, according to the different angles of the special-shaped conductor, it is necessary to make multiple blocks for size measurement. , waste of material and inconvenient to operate

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