Discharging processing electrode clamp

Abstract

The present invention discloses one kind of electrode fixture for electric discharge machining. The electrode fixture includes one pedestal with one top open slot, one raised side clamping part, one longitudinal locating slot, one V-shaped notch and one oil nozzle; one horizontal screw inside the open slot of the pedestal; and one sliding block screwed to the screw capable of reciprocating relatively to the pedestal with the rotation of the screw. It may hold one cylindrical electrode in the V-shaped notch or one long sheeted electrode in the locating slot, and possesses wide application range and stable holding and locating effect.

Description

technical field [0001] The invention relates to an electrode clamp for electrical discharge machining, in particular to a clamp structure with simple operation, stable positioning and suitable for electrodes of different shapes. Background technique [0002] In the manufacturing and processing process of plastic injection molds, forming electric discharge is recognized as the most time-consuming and frequently used processing process in the industry. The so-called electric discharge machining is the continuous repeated contact and separation of an electrode and the mold to be processed by sliding back and forth. And other actions, with the passage of current, the electrode and the mold will be melted at high temperature and gasified immediately. Since the material of the general electrode is copper, its conductivity is better than the iron material of the general plastic injection mold, so the loss of the mold will be more. The required shape and size are molded with the hel...

AI Technical Summary

Problems solved by technology

[0002] In the manufacturing and processing process of plastic injection molds, forming electric discharge is recognized as the most time-consuming and frequently used processing process in the industry. The so-called electric discharge machining is the continuous repeated contact and separation of an electrode and the mold to be processed by sliding back and forth. And other actions, with the passage of current, the electrode and the mold will be melted at high temperature and gasified immediately. Since the material of the general electrode is copper, its conductivity is better than the iron material of the general plastic injection mold, so the loss of the mold will be more. The required shape and size are molded with the help of molds; however, at present, for the electrode clamping and fixing of electric discharge machining, although there are electrode fixtures specially designed for fixed brand electric discharge machining tools, the entire system must be imported from abroad when purchasing. At present, the manufacturing of plastic injection molds in Taiwan is mostly outsourced processing, and the overall system is expensive, resulting in a low penetration rate in the industry

[0003] Based on the above reasons, most mold makers can only rely on traditional quick-drying, tapping lock screws, vises or drill clamps to fix electrodes during EDM, but these methods can only be used for specific electrode shapes And use, and it all has serious shortcoming, causes in the flow process of discharge operation, just spends on fixing the electrode and is quite troublesome, and its instability is more likely to cause damage to the important parts of mold, for the above-mentioned various traditional The electrode fixing method is described as follows:

[0004] 1. The fixing method of the traditional vise to clamp the electrode: since the clamping stroke of the traditional vise and its width ratio is about 3:2, that is, if the electrode with a width of 135mm is to be clamped, the width of the traditional vise will be about 100mm , In this way, not only is it bulky and the width is too large, but the electrode with a small size will have many restrictions on the use, for example: when the electrode and the mold are centered or when the height difference between the mold surface is large, it can pass through It can be overcome by increasing the length of the electrode or replacing the vise with a smaller size, but generally EDMs only do OEM work for customers, and the molds and electrodes are provided by customers, and customers generally do not consider this issue for processors. Moreover, the lengthening of the electrode size will also increase its production cost (both material costs and wages increase). If replacing the vise is considered, it means that the processor must prepare a variety of vise specifications just to clamp the rectangular electrode, not to mention the rectangular vise. There are often no right angles or parallel parts on the periphery of the electrode that can be clamped, and the surface is rough (such as the electrode made by a CNC milling machine). Therefore, the clamping effect of the traditional vise is not good. In the middle, the electrode will move and fall off due to the unclamping, which will cause irreparable damage to the mold!

[0005] In addition, during the discharge machining process, the contact surface between the electrode and the mold must be continuously washed by the discharge ma

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