Device and method for accurately detecting parallelism and verticality of multiple groups of hole end base planes

Abstract

The invention discloses a device and a method for accurately detecting parallelism and verticality of multiple groups of hole end base planes, and the device comprises a fixed seat, the fixed seat is rotatably connected with a core rod, and the core rod is movably connected with a plurality of dial indicators; during detection, a core rod which is well matched with a shaft hole of a workpiece to be detected is inserted into the shaft hole, the core rod and the hole cannot have a measurable gap while the core rod can rotate freely, a dial indicator head connected to the core rod is in contact with a hole end base plane, and the parallelism and verticality of the hole end base plane can be detected by rotating the core rod at a constant speed. The device is simple in structure, low in cost and easy to implement, during detection, the core rod and the hole are always in an attached state, point defects of hole face machining and manufacturing can be automatically filtered, misjudgment caused by the small contact face of a three-coordinate probe is avoided, and the device is high in applicability, high in precision and reliable in result.

Description

technical field [0001] The invention relates to a device and method for accurately detecting the parallelism and perpendicularity of base surfaces of multiple groups of hole ends, and belongs to the technical field of inspection and detection of mechanical parts. Background technique [0002] At present, in the detection of conventional straight-through holes, high requirements on multi-layer end faces, and the angle between the hole and the installation reference of the part, the "three-coordinate" measurement or the "deflector" is basically used for detection. Its advantage is that the detection result is accurate; but there are also the following disadvantages: [0003] (1) The "three-coordinate" investment is huge, the operator requires professional training, the use environment is strict, the necessary supporting facilities must be guaranteed, the maintenance cost is high, and the cost-effectiveness ratio for conventional micro-enterprises is small; [0004] (2) "Three...

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Problems solved by technology

Its advantage is that the detection result is accurate; but there are also the following disadvantages:

[0003] (1) The "three-coordinate" investment is huge, the operator requires professional training, the use environment is strict, the necessary supporting facilities must be guaranteed, the maintenance cost is high, and the cost-effectiveness ratio for conventional micro-enterprises is small;

[0004] (2) "Three coordinates" is a high-precision testing instrument, and the cost of outsourcing inspection and testing is high. It is basically only used for random inspection of parts and the inspection cycle is long. It cannot conduct full inspection of all parts in time and is affected by the work arrangement of the testing unit. , comprehensiveness and timeliness are not enough

[0005] (3) The "three-coordinate" is limited by the probe and cannot perform internal detection of small holes and deep holes; the "deflector" is limited by size, shape, and size, and its applicability is limited

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