Tolerance inspection caliper rule

Abstract

The invention relates to a tolerance inspection caliper, comprising a ruler, the ruler is provided with a fixed end, a sliding seat and a fixed sleeve, the fixed end is a ruler rod body with main scales and vernier scales engraved on both sides, the sliding The seat cover is on the fixed end of the main scale, which is similar or equal to the structure of a standard vernier caliper with a dial that can slide. The fixed sleeve is set on the fixed end of the vernier scale. The fixed sleeve is provided with a size positioning block. One end of the positioning block coincides with the zero scale on the ruler, and the inner wall of the fixed sleeve is provided with two vernier blocks that can slide along the length direction of the ruler and are engraved with a vernier scale. The two vernier blocks are mutually symmetrical and partly The fixed sleeve is extended, and racks are respectively provided on opposite sides thereof, and an adjuster that drives the racks to move symmetrically in opposite directions is provided on the ruler, and the end surface of the sliding seat is in contact with the two verniers. The end face of the block forms a flat inspection jaw. The invention has the advantages of simple and convenient tolerance inspection and high detection efficiency.

Description

technical field [0001] The invention relates to a dimension measuring and inspection tool, in particular to a tolerance inspection caliper. Background technique [0002] A tolerance is the allowable variation in the value of an actual parameter. For production, processing and manufacturing, the actual size of the product with limited tolerances can be changed within a certain range in order to meet the requirements of sharing, interchange or mutual cooperation. During the manufacturing process of products, processing errors will inevitably occur. The actual manufacturing size of batch products or parts cannot accurately reach a specified value. Usually, the actual size of the product is required to have sufficient accuracy, that is, the actual size of the product The deviation from the theoretical size is controlled within a certain range. Within the allowable range, the product is judged to be qualified, and the allowable range is the tolerance, such as dimension A ,...

AI Technical Summary

Problems solved by technology

This measurement method requires two rulers, and the tolerance size needs to be adjusted separately, and the measurement is performed in rotation. There are disadvantages such as troublesome size adjustment, cumbersome measurement steps, and low efficiency, which is not conducive to the rapid detection of workpieces; another method is to make special Tolerance testing jig, one end is the upper tolerance size, and the other end is the lower tolerance size. This jig has the advantages of convenient detection and high efficiency, but the disadvantage is also very obvious, that is, it can only measure a certain tolerance of a single size, and it is not universal at all. The reliability is notable, and the production cost is high. A product often has many dimensions that need to be controlled, and many special fixtures are used. The detection cost will be very high, which will directly affect the vitality of the product.

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