Comprehensive measuring instrument and measuring method

Abstract

The invention discloses a comprehensive measuring instrument and a measuring method, which are used for high-precision measurement of a workpiece inner cavity. The comprehensive measuring instrument comprises a base, a sliding plate, a bracket, a supporting frame, a supporting arm and a measuring rod, wherein the base is a rectangular steel plate, the sliding plate is horizontally arranged on thebase, the bracket is vertically fixed to one end of the base, and the supporting arm is vertically mounted on the bracket; the supporting arm is provided with an upward bent portion on one end away from the bracket, the measuring rod is in pin connection with the bent portion, the measuring rod is provided with a supporting rod on one end away from the bracket, a sliding piece is fixed to the toppart of the supporting rod, and a measuring point is arranged at one end, close to the bracket, of the measuring rod; a connecting rod is arranged on one end, close to the measuring rod, of the base,a dial indicator is mounted on the connecting rod, and a first sliding groove group and a second sliding groove group are processed in the sliding plate; and the bottom parts of sliding grooves of thesecond sliding groove group are oblique surfaces, and the supporting frame comprises a first load bearing slider and a second load bearing slider. The comprehensive measuring instrument is used for measuring errors and verticality of the unsmooth workpiece inner walls, the measuring precision can be up to 0.01 mm, the operation is convenient, and the comprehensive measuring instrument can adapt to a variety of workpieces.

Description

technical field [0001] The invention belongs to the technical field of measuring equipment, and in particular relates to a comprehensive measuring instrument and a measuring method. Background technique [0002] In the processing of some pipe fittings, the precision requirements are extremely high. Taking aerial bombs as an example, in the processing and production of aerial bombs, the processing precision of some aerial bomb shells is extremely high, so as to ensure that the bombs can enter and leave the magazine, drop , Launching or exploding can be operated smoothly, and the machining accuracy error of the shell is required to be within the millimeter level. [0003] During the processing of the inner cavity of the shell, several lines will be processed on the inner wall of the shell, and the surface of the inner wall of the shell will be divided into several regular or irregular diamond-shaped blocks, so that the inner wall of the shell will be in the shape of "pineapple...

AI Technical Summary

Problems solved by technology

[0004] Especially for launch-type aerial bombs, it is required that the wall thickness error of any circumferential section on the main body of the aerial bomb shell should not exceed 1mm. Due to the unevenness of the inner wall surface, general photoelectric testing equipment and ultrasonic testing equipment cannot complete the test.

[0005] In addition, in the shell processing of aerial bombs, there is also a high requirement for verticality, which needs to be tested by different instruments, which is relatively troublesome

Images