Electrode machining positioning clamp

Abstract

The utility model discloses a positioning clamp for electrode machining, which mainly solves the problems of complexity, low machining efficiency and high calibration error probability of the conventional electrode machining tool. The positioning clamp comprises positioning angle iron which is adsorbed and positioned on the CNC machining platform, a base which leans against and is adsorbed on a three-face positioning coordinate formed by the CNC machining platform and the positioning angle iron, and a base clamping head which is used for transferring and positioning the fixed electrode to be machined and the base. On the basis of existing electrode machining, clamping calibration and spark discharge, a series of positioning bases are additionally arranged. And through unified reference positioning machining, CNC and electric spark machining data are communicated, and the positioning reference of each electrode is unified. The electrode machining benchmark is determined by the standardized electrode positioning base, and CNC machining efficiency and size accuracy can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrode processing tools, and in particular relates to an electrode processing positioning fixture. Background Art

[0002] Moulds are known as the "mother of industry". As an important basic process equipment of the manufacturing industry, they are an important part of the manufacturing industry. Discharge machining, also known as electric spark machining, is one of the essential links in the mould making process. Its application process is as follows: 1. Use CNC processing equipment to process copper or graphite materials into the required unique shape and use them as electrodes. 2. Clamp the processed electrode on the spark machine for benchmark calibration. 3. After the calibration is completed, perform electric spark machining. Connect the two poles of the power supply to the electrode and the workpiece respectively, and immerse them in the coolant. The automatic control system controls the electrode to feed the workpiece. When the gap between the two electrodes reaches a certain distance, a pulse voltage will be applied to the two electrodes to generate spark discharge. The instantaneous temperature of the spark is very high, which can carbonize and corrode conductive objects, thereby realizing the unique shape processing and forming of the workpiece.

[0003] Existing electrode processing is done by cutting copper rod profiles and then CNC processing. Its defects are: a. It is necessary to reserve machining allowance for milling the positioning reference plane. This wastes electrode materials. b. The electrode processing reference is different, and each electrode processing needs to be recalibrated. The processing efficiency is low.

[0004] The existing electrode processing adopts the method of placing materials on a tray and transporting them to the next process. The disadvantage is that the electrodes are of different sizes and heights, which may easily cause risks such as bumping and deformation of the electrodes during transportation.

[0005] After the existing electrode processing is completed, it needs to be re-clamped and calibrated to carry out the EDM process. The cumbersome benchmark calibration makes the processing efficiency low. Multiple data calibrations greatly increase the probability of errors, thus causing unnecessary losses. Utility Model Content

[0006] The utility model aims to provide an electrode processing positioning fixture, which mainly solves the problems of complex existing electrode processing tools, low processing efficiency and high probability of calibration errors.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0008] An electrode processing positioning fixture comprises a positioning angle iron adsorbed and positioned on a CNC processing platform, a base adsorbed on three-surface positioning coordinates formed by the CNC processing platform and the positioning angle iron, and a base clamp used for transferring and positioning the fixed electrode to be processed and the base.

[0009] Furthermore, in the utility model, the base clamp includes a clamping head seat that is U-shaped as a whole, a positioning handle arranged at the center position of the outer surface of the U-shaped bottom surface of the clamping head seat, a plurality of magnet positioning holes and a plurality of positioning pins arranged on the inner side surface of the U-shaped bottom surface of the clamping head seat, and a first screw through hole arranged on the U-shaped side surface of the clamping head seat.

[0010] Furthermore, in the utility model, the base includes a base body that is overall U-shaped, a positioning hole opened on the base body corresponding to the position of the positioning pin on the clamping head seat, and a second screw through hole opened on the U-shaped side of the base body; wherein the base body is adapted to be clamped into the head seat.

[0011] Furthermore, in the utility model, coordinate markings are provided on the upper surface of the positioning angle iron.

[0012] Furthermore, in the present invention, a base number is provided on the U-shaped side surface of the base body.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] (1) The utility model adds a series of positioning bases on the basis of existing electrode processing, clamping calibration, and spark discharge. Through unified reference positioning processing, CNC and EDM data are connected, and the positioning bases of various electrodes are unified. The electrode processing base is determined by the standardized electrode positioning base, which can effectively improve the CNC processing efficiency and dimensional accuracy.

[0015] (2) The utility model changes the original CNC machining datum to a standardized electrode point base, and the original electrode does not need to be milled on the datum positioning surface, which can effectively save electrode materials.

[0016] (3) In the present invention, after the electrode is clamped by the base, the chassis is stable and uniform in size, which can effectively avoid the risk of bumping and bruising the electrode during transportation.

[0017] (4) The utility model uniformly uses the reference of the positioning base from electrode processing to spark discharge. When each electrode is CNC processed or spark discharge is performed, there is no need to repeatedly calibrate and position it, and it can be directly processed according to the drawing data. It can effectively improve the efficiency of spark discharge processing. At the same time, it can avoid the risks of omission / error in multiple data calibration. The design has a simple structure, low investment cost, high income-generating benefits, and strong popularity, and is suitable for various mold electrode processing and spark discharge processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the explosion structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the back structure of the base clamp in the utility model.

[0020] Figure 3 The utility model is applied to spark processing schematic diagram.

[0021] Figure 4 The utility model is an electrode tray.

[0022] Figure 5 This is a schematic diagram of electrode processing in the utility model.

[0023] The names corresponding to the reference numerals are:

[0024] 1-positioning angle iron, 2-base, 3-base clamp, 4-electrode, 5-workpiece to be processed, 10-coordinate mark, 20-base body, 21-positioning hole, 22-second screw through hole, 30-clamp seat, 31-positioning handle, 32-magnet positioning hole, 33-positioning pin, 34-first screw through hole. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and embodiments. The present invention includes but is not limited to the following embodiments.

[0026] Example

[0027] like Figure 1 , 2 As shown, the utility model discloses an electrode processing positioning fixture, including a positioning angle iron 1 adsorbed and positioned on a CNC processing platform, a base 2 adsorbed on the three-sided positioning coordinates formed by the CNC processing platform and the positioning angle iron 1, and a base clamp 3 for transferring and positioning the fixed electrode to be processed and the base 2.

[0028] In this embodiment, the base clamp 3 includes a clamp seat 30 that is U-shaped as a whole, a positioning handle 31 disposed at the center of the outer surface of the U-shaped bottom surface of the clamp seat 30, a plurality of magnet positioning holes 32 and a plurality of positioning pins 33 disposed on the inner side surface of the U-shaped bottom surface of the clamp seat 30, and a first screw through hole 34 disposed on the U-shaped side surface of the clamp seat 30. A magnet is placed in the magnet positioning hole 32.

[0029] In this embodiment, the base 2 includes a base body 20 that is generally U-shaped, a positioning hole 21 formed on the base body 20 and corresponding to the position of the positioning pin 33 on the clamping head seat 30, and a second screw through hole 22 formed on the U-shaped side surface of the base body 20. The base body 20 is adapted to be clamped into the clamping head seat 30.

[0030] like Figure 5As shown, when the electrode is clamped and processed, the positioning angle iron 1 is adsorbed and positioned on the CNC processing platform. The table is calibrated to determine the positioning reference point of the base 2. The electrode to be processed is assembled into the base body 20, and the electrode fastening screw is screwed into the second screw through hole 22. While tightening, the electrode 4 is firmly locked. Then the base 2 with the electrode 4 is adsorbed on the three-sided positioning coordinates formed by the CNC processing platform and the positioning angle iron 1. Then the processing of each electrode is completed, and the processing positioning reference of each electrode is unified according to the base number.

[0031] like Figure 4 As shown, after each electrode is processed, it is positioned by a unified standard base 2. All electrodes of different heights, widths and narrowness can be neatly stacked in the material tray to avoid collision and damage.

[0032] When the processed electrodes are processed by electrospark machining, first clamp the base clamp 3 to the spark machine through the positioning handle 31. The workpiece to be processed is adsorbed and clamped on the CNC processing platform. The next step is to lock the processed electrode and base 2, and insert them into the positioning pin 33 through the positioning hole 21. At the same time, the magnet positioned in the magnet positioning hole 32 will adsorb the base 2 to prevent it from falling. At this time, use the base fastening screw to lock into the first screw through hole 34, lock and fix the base 2. Next, calibrate the reference so that the positioning reference of the workpiece to be processed and the positioning reference of the base 2 are on the same vertical line.

[0033] like Figure 3 As shown, after the electrode 4 and the workpiece 5 to be processed are aligned, the relative positions of the electrode processing coordinate systems relative to the workpiece reference points on the ignition processing drawing can be adjusted, and the electric spark discharge processing can be performed.

[0034] The above embodiment is only one of the preferred implementation modes of the present utility model and should not be used to limit the protection scope of the present utility model. Any changes or modifications that are made to the main design concept and spirit of the present utility model without any substantive significance, as long as the technical problems solved are still consistent with the present utility model, should be included in the protection scope of the present utility model.

Claims

1. An electrode processing positioning fixture, characterized in that: The invention comprises a positioning angle iron (1) which is adsorbed and positioned on a CNC processing platform, a base (2) which is adsorbed on three-sided positioning coordinates formed by the CNC processing platform and the positioning angle iron (1), and a base clamp (3) which is used to transfer and position the fixed electrode to be processed and the base (2).

2. The electrode processing positioning fixture according to claim 1, characterized in that: The base clamp (3) comprises a clamp seat (30) which is generally U-shaped, a positioning handle (31) arranged at the center position of the outer surface of the U-shaped bottom surface of the clamp seat (30), a plurality of magnet positioning holes (32) and a plurality of positioning pins (33) arranged on the inner side surface of the U-shaped bottom surface of the clamp seat (30), and a first screw through hole (34) arranged on the U-shaped side surface of the clamp seat (30).

3. The electrode processing positioning fixture according to claim 2, characterized in that: The base (2) comprises a base body (20) which is generally U-shaped, a positioning hole (21) provided on the base body (20) and corresponding to the position of a positioning pin (33) on a clamping head seat (30), and a second screw through hole (22) provided on the U-shaped side surface of the base body (20), wherein the base body (20) is adapted to be clamped into the clamping head seat (30).

4. The electrode processing positioning fixture according to claim 3, characterized in that: A coordinate mark (10) is provided on the upper surface of the positioning angle iron (1).

5. The electrode processing positioning fixture according to claim 4, characterized in that: A base number is provided on the U-shaped side surface of the base body (20).

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