Purging device used for purging blind holes of workpiece

Abstract

The invention provides a purging device used for purging blind holes of a workpiece and belongs to the technical field of drilling and taping. The purging device comprises a support, a noise cover fixed on the support, an electric control cabinet fixed on the support and a workpiece placing clamp disposed in the noise cover, wherein the workpiece placing clamp comprises a workpiece positioning and fixing part, an air blowing cylinder, a flow dividing block fixed on the air blowing cylinder and air pins fixed on the flow dividing block to output high-pressure air flow, and the air blowing cylinder is used for inputting high-pressure gas and driving the flow dividing block to move so as to enable the air pins on the flow dividing block to align at and approach to the blind holes of the workpiece. The purging device used for purging the blind holes of the workpiece is small in noise pollution, good in controllability and good in purging effect.

Description

technical field [0001] The invention belongs to the technical field of drilling and tapping, and relates to a purging device for purging the blind hole of a workpiece after the blind hole is formed by drilling and tapping. Background technique [0002] In industrial manufacturing, it is often necessary to drill and tap a workpiece (such as a metal part) to form a blind hole such as a threaded hole, and these steps can usually be completed on a numerically controlled machine tool. After tapping, although most of the chips are expelled, it is inevitable that some chips will remain in the blind hole, and some of the liquid used in the drilling and tapping process will also remain. Therefore, the industry usually includes a blowing step to purge the blind hole to remove chips and liquid after the blind hole is formed by drilling and tapping. [0003] In the prior art, the blowing step usually uses high-pressure industrial gas, and the blowing methods mainly include the followin...

AI Technical Summary

Problems solved by technology

[0006] Although the first method is simple and easy to learn, in this method, since the nozzle air gun is completely exposed to the same working environment as the operator, the strong noise caused by the high-pressure air flow passing through the nozzle of the air gun can reach the maximum level at the moment of blowing. More than 100 decibels, far exceeding the upper limit of factory noise standards (85 decibels) stipulated by the state, therefore, causing great noise pollution to operators and the factory environment

Moreover, if there are many blind holes in the workpiece, it is easy to miss a certain blind hole; the instability and variability of operators will also lead to inconsistent purging effects on blind holes, unstable product quality, and high defect rate

[0007] In the second method, although the problem of omission and inconsistent purging effect can be solved, the air needle and the operator are also exposed to the same environment, and the noise caused by the high-pressure blowing air flowing through the air needle will still greatly exceed the national regulations standard, therefore, the noise pollution is equally high

[0008] To sum up, in the existing methods of purging blind holes, there is the problem of excessive noise pollution, which is likely to cause physical damage to the operator, and further requires the operator to wear corresponding noise protection equipment, such as rubber earplugs. Although some protective equipment can reduce noise pollution to a certain extent, long-term wearing of rubber earplugs can also cause some complications (such as otitis media, etc.), therefore, it is necessary to fundamentally reduce or eliminate noise pollution in the cleaning process oversized problem

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