Pneumatic device for detecting coaxiality of inner hole

A technology of pneumatic device and coaxiality, applied in measuring devices, instruments, etc., can solve the problems of insufficient length of dial indicator head and difficult to measure, and achieve stable and reliable clamping, high disassembly efficiency, and reduced labor intensity. Effect

Pending Publication Date: 2018-09-04
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the hole to be measured is very deep, the length of the head of the dial indicator is generally not long enough, so it is difficult to complete the measurement

Method used

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  • Pneumatic device for detecting coaxiality of inner hole
  • Pneumatic device for detecting coaxiality of inner hole
  • Pneumatic device for detecting coaxiality of inner hole

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Embodiment Construction

[0016] refer to Figure 1-Figure 3 . In the embodiment described below, a pneumatic device for detecting the coaxiality of the inner hole includes: a table-top pneumatic device composed of a base with a hollow base and its working platform, and a column bow arm perpendicular to the base. machine. The working platform is provided with the L-shaped horizontal dragging plate 7 which is pushed by the longitudinal handle screw and moves along the horizontal dovetail guide rail on the working platform. There is also a longitudinal dragging plate 8 pushed by connecting the longitudinal handle 9 through the screw hole of the side vertical plate. The plate 8 is provided with a clamping disc 14 that communicates with the air intake channel 2 downwards and clamps the workpiece 16 to be measured upwards. Radial ventilation holes 11, each radial ventilation hole 11 is equipped with a pneumatic spring push rod 12, the rectangular rod body of the front section of the pneumatic spring push ...

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Abstract

The invention discloses a pneumatic device for detecting coaxiality of an inner hole and is aimed at providing a pneumatic clamp detection device with easy operation, rapid clamping, small detection error and flexible adjustment. The invention is realized through the following technical scheme: a clamping plate clamping up a to-be-measured workpiece communicates with trisected radial vents of an air inlet channel, and the front segment rectangular rod body of a pneumatic spring push rod is fixedly connected to an equant arc clamping jaw through a shaft end of a radial hole of the same segmentin each radial vent; air flow passes through trisected circumferential holes at the bottom of the clamping plate to communicate with the radial vents, the air flow pushes the pneumatic spring push rodto move toward the axis of a clamping hole, and the equant arc clamping jaw fixedly connected to the shaft end of the pneumatic spring push rod is pushed to center to press the to-be-measured workpiece; and a scale rod measuring head of a numeric scale falls into an inner hole of the to-be-measured workpiece, contacts with a containment area of the hole wall of the inner hole of the to-be-measured workpiece within a detected length, measures each part needing the coaxiality of the to-be-measured workpiece, determines a maximum runout and a minimum runout, and obtains the coaxiality of the to-be-measured workpiece.

Description

technical field [0001] The invention relates to a detection device for positioning a workpiece by pneumatic fast clamping and measuring the concentricity / coaxiality of the inner hole of the workpiece, in particular a measuring tool specially used for detecting the coaxiality of the inner hole. Background technique [0002] The detection of coaxiality of shaft and hole parts in the machinery manufacturing industry directly affects the quality and interchangeability of related industrial products. In mechanical processing, shafts and holes are the processing elements of machined parts, which is very common. The measurement of coaxiality and concentricity is a constant measurement object of such processing elements. However, because there are great similarities between the two in terms of names and measurement methods, they are often confused in practical applications. Shaft-hole parts have different structural forms in actual production, and the requirements for coaxiality a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/24
CPCG01B21/24
Inventor 刘成
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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