Detecting device and method for planeness of air inlet flange of exhaust manifold

Abstract

The invention discloses a detecting device for the planeness of an air inlet flange of an exhaust manifold of an engine. The detecting device comprises a base, a compression arm, a base plate, laser probes and a microcomputer system. The base and the compression arm are fixed onto the base plate respectively, and the working end of the compression arm is located above the base and can move upwards and downwards relative to the base to compress the detected air inlet flange; three or more laser probe assembly holes are formed in the base, the assembly holes are not located on the same line, the laser probes are assembled in the assembly holes and are located at the same horizontal height, the laser probes are connected with the external microcomputer system, and the microcomputer system stores and analyzes signals detected by the laser probes to obtain the planeness of the detected air inlet flange. The detecting device is simple in structure, the laser probes and the microcomputer system are used for conducting detection, multiple points are used for determining a detection reference plane, the planeness of the air inlet flange of the exhaust manifold can be quickly and accurately detected and the testing precision is high.

Description

technical field [0001] The invention specifically relates to flatness detection technology, in particular to a flange flatness detection device. Background technique [0002] The exhaust manifold of the engine mainly guides the exhaust gas discharged from the engine. There is an intake flange at the intake end where the exhaust manifold is connected to the engine. The fit between the intake flange and the cylinder head and gasket is very important. Therefore, it is necessary to strictly test the flatness of the intake flange of the exhaust manifold in production. At present, the detection methods mainly include the lever dial indicator method and the plug gauge passing method. However, both of the above two methods have low test efficiency, poor test accuracy and misjudgment. [0003] Chinese patent document (Application No.: 201110104973.6) discloses "a large-scale flange flatness detection method", which uses three reference points as the basis and cooperates with the...

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Problems solved by technology

[0004] The invention discloses an exhaust manifold intake flange flatness detection device and method to solve the problems of low test efficiency, poor test accuracy and misjudgment in existing detection methods

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