Tool for measuring center of gravity of noncircular-section product

Abstract

The invention discloses a tool for measuring the center of gravity of a noncircular-section product, comprising: a base comprising first and second supports perpendicular to each other, wherein one end of the second support is fixed to the first support and two ends of the first support and the other end of the second support are each provided with a weight measuring device at bottom; two first positioning blocks, wherein one first positioning block is fixed to the first support, the other is movably disposed at the other end of the second support, and the two first positioning blocks are aligned along the length of the first support; two second positioning blocks arranged above the two first positioning blocks respectively and releasably and also aligned along the length of the first support; the first positioning blocks are in tight contact with a product under measurement, and the second positioning blocks are in tight contact with the product under measurement. The tool is simple in structure; machining is performed after overall weld-forming such that an assembly procedure is omitted; measured values obtained after actual measuring and machining are subjected to size calculation such that system errors are decreased.

Description

technical field [0001] The invention belongs to the technical field of measurement, and relates to a center-of-gravity measuring tool for products with non-circular cross-sections. Background technique [0002] For products with non-circular cross-sections, small size, and light weight, the center of gravity data is an important technical indicator of the product, which requires high measurement accuracy, and commonly used measurement methods are difficult to meet the requirements. The commonly used method for measuring the center of gravity of this type of product is: the product is placed on the weighing stand through the front and rear two rings, a ground scale is placed under each of the four fulcrums of the weighing stand, and the center of gravity is determined by the four-point force measurement method. The four-point force measuring tooling is a front and rear split tooling. The centering accuracy of the front and rear tooling needs to be adjusted every time weighing...

AI Technical Summary

Problems solved by technology

The four-point force measuring tooling is a front and rear split tooling. The centering accuracy of the front and rear tooling needs to be adjusted every time weighing. The manual operation of the adjustment process is relatively random, and the centering accuracy of the front and rear tooling is not high. The center of the ring and the axis of the product The coincidence accuracy of the lines cannot be guaranteed. In addition, the four-point force measuring tool is an assembly, and the assembly clearance of the tool will change with the weight distribution of the product, and the system error is relatively large.

The four-point measuring tool is used for this product (non-circular cross-section, small size, light weight) with low measurement accuracy of the center of mass, poor stability of measurement results, and low confidence

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