Device for measuring coaxiality of central holes of front and rear cylinder bodies

Abstract

The invention discloses a device for measuring the coaxiality of central holes of front and rear cylinder bodies. The device comprises a base, a guiding rail, a left sliding support base, a right sliding support base, positioning bases, a positioning mandrel, a sliding block, a meter base, a rotating swing arm, a fixing clip and a dial gauge; a guiding groove is formed in the guiding rail in a longitudinal direction, the left sliding support base and the right sliding support base are arranged on the guiding rail, the positioning bases are fixed to the left sliding support base and the right sliding support base respectively and both provided with a positioning rod, and the two positioning rods are arranged opposite to each other. The positioning mandrel is further disposed between the twopositioning rods, the sliding block is disposed on the portion, between the left sliding support base and the right sliding support base, of the guiding rail, and one end of the sliding block protrudes out of the guiding rail; the meter base is arranged on the sliding block outside the guiding rail and provided with the rotating swing arm, the top of the rotating swing arm is connected with the fixing clip, and the dial gauge is fixed to the fixing clip. The device has the advantages of a simple and reasonable structure, a low cost, simple operation, high measurement efficiency, a good positioning effect and high measurement precision.

Description

technical field [0001] The invention relates to a coaxiality measuring device, in particular to a coaxiality measuring device for the central holes of the front and rear cylinder bodies. Background technique [0002] Automobile air-conditioning compressor is the heart of automobile air-conditioning refrigeration system, which plays the role of compressing and transporting refrigerant vapor. Wherein, the processing quality of the central holes of the front and rear cylinder blocks directly affects the assembly and service performance of the entire compressor. Therefore, it is necessary to detect the coaxiality of the two central holes after the processing of the front and rear cylinder blocks is completed. Traditionally, three-coordinate equipment is used to measure it. There are three defects. First, the equipment purchase cost is high. In the laboratory, it cannot adapt to the on-line detection of factory mass production. Third, there are not only the disadvantages of hig...

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Problems solved by technology

However, after using it for a period of time, it is found that there are still two defects: on the one hand, because the detection method adopts longitudinal detection, the centerlines of the center holes of the front and rear cylinders are perpendicular to the horizontal plane, and the front and rear cylinders are positioned longitudinally by setting the cylinder , it is easy to cause deformation of the front and rear cylinders and affect the quality of the front and rear cylinders; on the other hand, due to the gap between the set dial gauge and the positioning mandrel, the dial gauge is easy to rotate during measurement, the positioning effect is poor, and there are measurement errors , reducing the measurement accuracy

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