Special-shaped hole machining device and method

Abstract

The invention discloses a special-shaped hole machining device used for machining special-shaped holes in a conical sheet metal part. The special-shaped hole machining device comprises an electrode mechanism and a clamping mechanism, the electrode mechanism comprises an electrode positioning seat which is provided with a plurality of electrode positioning holes corresponding to the special-shaped holes, electrodes are arranged in the electrode positioning holes, and a connecting rod is arranged on the spindle of the electrode positioning seat; the clamping mechanism comprises a tire body and an annular pressure plate, a plurality of mutually-matched screw holes are arranged in the tire body and the annular pressure plate, the conical metal part is arranged between the tire body and the annular pressure plate, and the tire body, the conical metal part and the annular pressure plate are fixedly connected through bolts. The invention further discloses a special-shaped hole machining method utilizing the special-shaped hole machining device to have the special-shaped holes in the conical metal part machined. By the special-shaped hole machining device and the special-shaped hole machining method, operation is facilitated, accuracy requirements on shape and position of the special-shaped holes in the part are guaranteed, machining cost is lowered, and production efficiency is improved.

Description

technical field [0001] The invention relates to the field of processing sheet metal parts, in particular to a device and method for processing special-shaped holes on tapered sheet metal parts. Background technique [0002] The tapered sheet metal part is small, and there are many special-shaped holes on the tapered surface, and the size of the special-shaped holes is small. Generally, the thickness of tapered sheet metal parts is 0.8-1.5mm, and there are many special-shaped holes on the part, which are about 25mm long and 2mm wide. Since the special-shaped holes are on the tapered surface, it is difficult to realize the punching method. The milling process has the following disadvantages: 1. The structure of the tapered sheet metal parts is thin, the shape and size are small, and it is difficult to clamp; 2. The number of special-shaped holes is large. Multiple clamping is required; 3. The width of the special-shaped hole is small, which requires high tool technology; 4. T...

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Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a special-shaped hole processing device and method, which are mainly used for processing special-shaped holes on small tapered sheet metal parts. The device includes an electrode mechanism and a clamping mechanism. The sheet metal parts are clamped and multiple special-shaped holes on the tapered sheet metal parts are processed simultaneously by means of electro-corrosion, which overcomes the difficulty of multiple clamping of small tapered sheet metal parts in the prior art. High requirements for machining tools, poor machining accuracy, low efficiency and other problems

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