Detection device for depth of workpiece sealing groove

Abstract

The invention discloses a detection device for the depth of a workpiece sealing groove. Workpieces are mounted on one side of a tooling support seat; a gap is formed in the tooling support seat; the gap corresponds to the sealing groove on each workpiece to be detected in position; a detection mounting plate is fixedly connected to the other end of the tooling support seat; a sliding table air cylinder is mounted on the detection mounting plate and is controlled and driven by a PLC (Program Logic Controller); a datum plate is positioned at the gap and is connected with the moving end of the sliding table air cylinder; the end face of the datum plate is attached to the datum plane of each workpiece; each displacement sensor is connected onto the datum plate and is electrically connected with the PLC; the position of a measuring head of one displacement sensor corresponds to that of one sealing groove on the corresponding workpiece. Due to the adoption of the structure, the stability of the datum plane is guaranteed, the detected data is enabled to have accuracy, and the errors are reduced.

Description

technical field [0001] The invention relates to the technical field of detection devices, in particular to a detection device suitable for the depth of sealing grooves of workpieces with sealing grooves. Background technique [0002] In the mechanical industry, many parts are equipped with sealing grooves for installing sealing rings, such as the front cover of the car, as attached figure 1 As shown in , there are two seal grooves on the end face of the car front cover, namely seal groove I2 and seal groove II3. These two seal grooves are processed by special groove cutters during processing. The end face is the datum plane 1, and the groove depth of these two sealing grooves is required to be 2.5mm to 2.6mm, which is equivalent to a tolerance of 0.1mm, so the tolerance of the groove depth is relatively small. In the process of processing these two sealing grooves, there are two reasons that will easily lead to problems: one is the wear of the cutting tool, and the other is...

AI Technical Summary

Problems solved by technology

In the process of processing these two sealing grooves, there are two reasons that will easily lead to problems: one is the wear of the cutting tool, and the other is that the front cover of the car is an aluminum casting, and the ductility of aluminum is large, so the groove cutter is in the process of machining. When the groove is deep, aluminum chips will stick to the tool, which will cause the diameter of the sealing groove to become larger or affect the machining accuracy of the sealing groove

However, these two problems cannot be completely solved under the existing manufacturing methods. The problems they cause are: the groove depth of the sealing groove will be out of tolerance, that is to say, the groove depth will be greater than 2.6mm, and the groove depth will be greater than 2.6mm. Once the groove depth of the sealing groove is out of tolerance, after the sealing ring is installed on the front cover of the car, the sealing performance of the two places will be greatly reduced, so the front cover of the car will leak oil

[0005] 1) Since the magnetic base and the workpiece exist independently, and a platform with high flatness must be prepared, the magnetic base is adsorbed on the platform. Therefore, on the one hand, the position of the magnetic base and the workpiece itself are inseparable. There is a certain error, which will lead to the inaccuracy of the measured data itself; on the other hand, the fixing reliability of the magnetic meter seat is not high, once there is looseness or movement, the reading of the dial indicator will be different. error;

[0006] 2) Both the workpiece and the platform can move independently. Therefore, the workpiece must not move during measurement. Once there is a touch to make the workpiece shift, the reading of the dial indicator will also have errors;

[0007] 3) The overall installation requirements of the detection device with this structure are too high, the operation is cumbersome, time-consuming and laborious, and the production efficiency is extremely low

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