Multi-tooth online detection device and method for precision forging of straight-tooth conical gear

Abstract

Provided are a multi-tooth online detection device and method for precision forging of a straight-tooth conical gear. The multi-tooth online detection device comprises the straight-tooth conical gear, a gear positioning clamp, a positioning clamp rotation mechanism, a base, a lathe body, a vertical sliding platform, a vertical ball screw pair, a horizontal sliding platform, a horizontal ball screw pair, a rotation oil cylinder, a non-contact type laser probe, a laser probe protective cover, a data line and a computer. By adoption of the non-contact type laser probe, the temperature of a workpiece has almost no influence on measurement results. Real-time monitoring of the precision forging effect of the straight-tooth conical gear is achieved through online detection of the chordal tooth thickness, relative height dimension and gear surface defects. The interpolation motion of the vertical sliding platform and the horizontal sliding platform cooperates with the rotation motion of the rotation oil cylinder and the positioning clamp rotation mechanism, online detection of the straight-tooth straight conical gear subjected to precision forging at a high temperature is achieved through the four simple motion mechanisms, and detection accuracy is ensured. The chordal tooth thickness, the forging closed-die height and various gear surface defects of the gear can be detected in a thermal state.

Description

technical field [0001] The invention belongs to the field of mechanical manufacturing, and relates to a multi-tooth on-line detection device and detection method for precision forged straight bevel gears. Background technique [0002] In the forging process, precision forging is a new process with less cutting and no cutting. Gear precision forging is a gear manufacturing technology that directly obtains complete gear teeth through precision forging, and the tooth surface can be used without or with only a little finishing. Precision forged gears have the advantages of good mechanical properties, high material utilization, and less environmental pollution, and are gradually being widely used. [0003] In order to ensure the quality of precision forged spur bevel gears, it is necessary to carry out on-line detection. The existing process detection is a means of manual contact detection and post-control. After the machining of the straight bevel gear is completed, on the gea...

AI Technical Summary

Problems solved by technology

[0004] 1) The information transmission speed of the test results is slow, and it is necessary to wait until a batch of workpieces are processed before testing on special equipment to judge whether the straight bevel gear is qualified or not

[0005] 2) The scrap rate is high. When there are unqualified forgings caused by incomplete filling of the mold or wear of the mold, it is not easy to be detected in time, resulting in a large number of unqualified workpieces.

And it is necessary to further analyze the cause of the unqualified product, which may be tooth surface modification problem, mold wear problem, workpiece positioning problem or other problems

Determining these issues is time-consuming, labor-intensive and inefficient

[0006] 3) Only normal temperature gear parts can be tested, but high temperature gear parts cannot be tested

[0007] To sum up, the current gear precision forging industry does not have a set of mature methods to realize the online detection of precision forged straight bevel gears, so that unqualified workpieces cannot be found in time. Once problems such as die wear or forging pressure setting are improper When, a large number of substandard products will be produced, making the production cost uncontrollable

Moreover, the surface temperature of the workpiece is high, and the traditional contact detection method cannot be used for online detection of precision forged spur bevel gears.

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