An electrode clamp tool for electric spark machining

Abstract

The application relates to the technical field of electric spark machining, and particularly discloses an electric spark electrode clamp tool, which comprises a machine head clamping rod, the bottom end of the machine head clamping rod is fixedly connected with a fixed clamping rod, a notch is vertically arranged on the side surface of the fixed clamping rod, a movable clamping positioning seat is connected to the notch, and the movable clamping positioning seat is fixed to the notch through a screw. The movable clamping positioning seat is arranged in cooperation with the fixed clamping rod, the distance between the movable clamping positioning seat and the notch of the fixed clamping rod is adjusted, the diameters of electrodes with different shapes are matched, stable clamping is realized, the clamp can clamp electrodes with different shapes, and the use range of the clamp is expanded.

Description

Technical Field

[0001] This utility model relates to the field of electrical discharge machining technology, specifically to an electrical discharge electrode fixture. Background Technology

[0002] Electrical discharge machining (EDM) is a machining method that uses a forming electrode to machine corresponding holes on a workpiece. During the process, a working pulse power supply and working fluid are applied between the electrode and the workpiece. The relative servo motion between the electrode and the workpiece generates a controllable electrical spark discharge to remove the workpiece.

[0003] The electrical discharge machining (EDM) process involves electrode replacement. To achieve rapid electrode replacement and improve work efficiency, Chinese invention patent publication number CN107717517A discloses a quick-change electrode fixture kit. This kit includes a machining base with a positioning block, which is placed on a machining platform; an EDM base with a positioning block, which is placed on an EDM machine table; and a fixture connected to either the machining base or the EDM base. One side of the fixture has an electrode-accommodating groove, and the other side has a positioning groove that engages with the positioning block. Electrode installation in the groove is convenient, thus improving work efficiency. However, this kit uses the groove to clamp the electrode and the positioning groove for positioning. Since the groove is only a square shape, it can only clamp square electrodes and cannot accommodate electrode components of different shapes, thus limiting the fixture's usability. Utility Model Content

[0004] The purpose of this utility model is to provide an electrical discharge electrode fixture to solve the problem that existing fixtures can only clamp electrode components of one shape and cannot be adapted to clamp electrode components of different shapes, thus limiting the use of the fixture.

[0005] To address the above issues, the following technical solution is provided:

[0006] An electrical discharge electrode fixture includes a head clamping rod, with a fixed clamping rod fixedly connected to the bottom end of the head clamping rod. The fixed clamping rod has a vertical notch on its side, and a movable clamping positioning seat is connected to the notch. The movable clamping positioning seat is fixed to the notch by screws.

[0007] The basic principle of the above technical solution is as follows: the head clamping rod is fixed on the machine tool, and the electrode is clamped between the fixed clamping rod and the movable clamping positioning seat. Electrodes of different shapes have different diameters. The distance between the fixed clamping rod and the movable clamping positioning seat is adjusted according to the diameter of the clamped electrode. After clamping, the movable clamping positioning seat is fixed to the notch of the fixed clamping rod with screws.

[0008] The beneficial effects of the above technical solution are as follows: Compared with the existing clamps that can only clamp electrode components of one shape, this technical solution sets up a movable clamping positioning seat to cooperate with a fixed clamping rod, and adjusts the distance between the notch of the movable clamping positioning seat and the fixed clamping rod to adapt to the diameter of electrodes of different shapes, thereby achieving stable clamping. This allows the clamp to clamp electrodes of different shapes and expands the range of applications of the clamp.

[0009] Furthermore, the fixed clamping rod has a first positioning hole, and the movable clamping positioning seat has a second positioning hole corresponding to the first positioning hole. A positioning pin is inserted into both the first and second positioning holes. When adjusting the distance between the fixed clamping rod and the movable clamping positioning seat, there are no screws; positioning is achieved through the positioning pin, ensuring that the movable clamping positioning seat always corresponds to the notch on the fixed clamping rod.

[0010] Furthermore, the fixed clamping rod has a first threaded hole, and the movable clamping positioning seat has a second threaded hole corresponding to the first threaded hole. A screw is threaded into both the first and second threaded holes. The screw includes a shank and a nut, and the diameter of the nut is larger than the diameter of both the first and second threaded holes. The distance between the fixed clamping rod and the movable clamping positioning seat can be locked by turning the screw.

[0011] Furthermore, the fixed clamping rod has a vertically arranged V-groove on one side of the notch, and the movable clamping positioning seat also has a vertically arranged V-groove on the side near the notch. The V-groove on the fixed clamping rod is opposite to the V-groove on the movable clamping positioning seat. The cooperation between the V-groove on the fixed clamping rod and the V-groove on the movable clamping positioning seat can stably clamp the cylindrical electrode. Under the action of axial force, the V-shaped contact surface will generate a radial component force, forming a "self-locking effect", which makes the clamp and the electrode workpiece more tightly connected, effectively resisting discharge vibration and lateral force, and improving processing stability.

[0012] Furthermore, the bottom of the notch on the fixed clamping rod is provided with a "7"-shaped clamping opening, and the bottom of the movable clamping positioning seat is also provided with a corresponding "7"-shaped clamping opening. The "7"-shaped clamping opening on the fixed clamping rod is opposite to the "7"-shaped clamping opening on the movable clamping positioning seat. The cooperation between the "7"-shaped clamping opening on the fixed clamping rod and the "7"-shaped clamping opening on the movable clamping positioning seat can stably clamp rectangular electrodes.

[0013] Furthermore, both the fixed clamping rod and the movable clamping positioning seat are inclined downwards relative to their respective bottoms, making their bottom ends tapered. This tapered design occupies less space axially, which is beneficial for optimizing the space of the machine tool table. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the electrode fixture.

[0015] Figure 2 A schematic diagram of the structure for fixing the clamping rod;

[0016] Figure 3 This is a structural diagram of the movable clamping positioning seat;

[0017] Figure 4 This is a schematic diagram of the structure of the electrode clamp holding electrodes of different shapes.

[0018] The reference numerals in the accompanying drawings include: 1. Head clamping rod; 2. Fixed clamping rod; 3. Movable clamping positioning seat; 4. Movable pin; 5. Screw; 6. V-groove; 7. "7" shaped clamping opening; 7. Square electrode; 8. Cylindrical electrode; 9. Thin sheet electrode. Detailed Implementation

[0019] The following detailed description illustrates the specific implementation method:

[0020] The basic implementation examples are as follows: Figure 1-4 As shown:

[0021] An electrical discharge electrode fixture, such as Figure 1 As shown, the device includes a machine head clamping rod 1, a fixed clamping rod 2 welded to the bottom end of the machine head clamping rod, a notch vertically on the right side of the fixed clamping rod 2, and a movable clamping positioning seat 3 connected to the notch. The fixed clamping rod 2 has a first positioning hole, and the movable clamping positioning seat 3 has a second positioning hole corresponding to the first positioning hole. A positioning pin 4 is inserted into both the first and second positioning holes. The fixed clamping rod 2 has a first threaded hole, and the movable clamping positioning seat 3 has a second threaded hole corresponding to the first threaded hole. A screw 5 is threadedly connected to both the first and second threaded holes. The screw 5 includes a screw rod and a nut, and the diameter of the nut is larger than the diameter of the first and second threaded holes. Figure 2 As shown, a vertically arranged V-shaped groove 6 is provided on one side of the notch of the fixing clamping rod 2, such as... Figure 3 As shown, the movable clamping positioning seat 3 also has a vertically arranged V-shaped groove 6 on the side near the notch, and the V-shaped groove 6 on the fixed clamping rod 2 is opposite to the V-shaped groove 6 on the movable clamping positioning seat 3. The bottom of the notch on the fixed clamping rod 2 has a "7"-shaped clamping opening 7, and the bottom of the movable clamping positioning seat 3 also has a corresponding "7"-shaped clamping opening 7, with the "7"-shaped clamping opening 7 on the fixed clamping rod 2 opposite to the "7"-shaped clamping opening 7 on the movable clamping positioning seat 3. The bottoms of both the fixed clamping rod 2 and the movable clamping positioning seat 3 are inclined downwards, making their bottom ends wedge-shaped.

[0022] The specific implementation process is as follows:

[0023] The head clamping rod 1 is fixed to the machine tool, such as Figure 4 As shown, the electrode is clamped between the fixed clamping rod 2 and the movable clamping positioning seat 3. Different shaped electrodes have different shapes. The movable clamping positioning seat 3 slides on the movable pin 4 according to the diameter of the clamped electrode, thereby adjusting the distance between the fixed clamping rod 2 and the movable clamping positioning seat 3. If a square electrode 8 is clamped, it is clamped between the "7"-shaped clamping opening 7 of the fixed clamping rod 2 and the "7"-shaped clamping opening 7 of the movable clamping positioning seat 3. If a cylindrical electrode 9 is clamped, it is clamped between the V-groove 6 of the fixed clamping rod 2 and the V-groove 6 of the movable clamping positioning seat 3. If a sheet electrode 10 is clamped, it is clamped between the right side of the fixed clamping rod 2 and the left side of the movable clamping positioning seat 3. After clamping, tighten the screw 5 to fix the movable clamping positioning seat 3 at the notch of the fixed clamping rod 2. This fixture is equipped with a movable clamping positioning seat 3 that cooperates with a fixed clamping rod 2. The distance between the notch of the movable clamping positioning seat 3 and the fixed clamping rod 2 can be adjusted to adapt to the diameter of electrodes of different shapes, thereby achieving stable clamping. This allows the fixture to clamp electrodes of different shapes and expands the range of applications of the fixture.

[0024] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A fixture for an electrical discharge electrode, comprising a head clamping rod, characterized in that: The bottom end of the machine head clamping rod is fixedly connected to a fixed clamping rod. The fixed clamping rod has a notch on its side, and a movable clamping positioning seat is connected to the notch. The movable clamping positioning seat is fixed to the notch by screws.

2. The EDM electrode fixture according to claim 1, characterized in that: The fixed clamping rod has a first positioning hole, and the movable clamping positioning seat has a second positioning hole corresponding to the first positioning hole. A positioning movable pin is inserted into both the first positioning hole and the second positioning hole.

3. The EDM electrode fixture according to claim 2, characterized in that: The fixed clamping rod has a first threaded hole, and the movable clamping positioning seat has a second threaded hole corresponding to the first threaded hole. The first threaded hole and the second threaded hole are connected by a screw, which includes a screw rod and a nut. The diameter of the nut is larger than the diameter of the first threaded hole and the second threaded hole.

4. The EDM electrode fixture according to claim 3, characterized in that: The fixed clamping rod has a vertically arranged V-shaped groove on one side of the notch, and the movable clamping positioning seat also has a vertically arranged V-shaped groove on the side near the notch. The V-shaped groove on the fixed clamping rod is opposite to the V-shaped groove on the movable clamping positioning seat.

5. The EDM electrode fixture according to claim 4, characterized in that: The bottom of the notch on the fixed clamping rod is provided with a "7"-shaped clamping opening, and the bottom of the movable clamping positioning seat is also provided with a corresponding "7"-shaped clamping opening. The "7"-shaped clamping opening on the fixed clamping rod is opposite to the "7"-shaped clamping opening on the movable clamping positioning seat.

6. The EDM electrode fixture according to claim 5, characterized in that: The fixed clamping rod and the movable clamping positioning seat are both inclined downwards from their respective bottoms, making the bottom ends of the fixed clamping rod and the movable clamping positioning seat conical.

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