CN209850052U - Linear cutting conducting block device - Google Patents

Abstract

The utility model provides a wire-electrode cutting conducting block device which characterized in that: the pulse power supply negative electrode lead wire comprises an eccentric conductive rod, a locking nut, a machine tool body supporting frame, a molybdenum wire, a circular conductive block, a transition bush, a nut, a ball bearing and a power supply negative electrode lead wire, wherein the eccentric conductive rod is fixed on the machine tool body supporting frame through the locking nut, an inner ring of the ball bearing is locked by the nut after being matched and connected with the eccentric conductive rod, an outer ring of the ball bearing is tightly matched with an inner hole of the transition bush, the transition bush is installed at two ends of the circular conductive block and is in interference fit with the circular conductive block, and the molybdenum wire. The conductive block generates self-rotation through the bearing, so that the static friction between the molybdenum wire and the circular conductive block is reduced, and the adverse phenomena of deep grooves, poor conduction, poor stability and the like generated on the surface of the conductive block are overcome; the contact surface gap between the molybdenum wires and the tensioning degree of the molybdenum wires are adjusted through the eccentricity between the front end rod part and the rear end rod part of the eccentric conducting rod, and the phenomenon of uneven discharge caused by the gap is solved.

Description

Linear cutting conducting block device

Technical Field

The utility model relates to a wire-electrode cutting conducting block device.

Background

At present, a wire cutting conductive block device is formed by fixing a square conductive block, a circular conductive block or an I-shaped conductive block on a conductive rod and directly connecting the conductive block with a pulse power line. The traditional wire cutting conduction mode is that a wire electrode (molybdenum wire) is in direct contact with a fixed conducting block, and the wire electrode moves back and forth on the surface of the fixed conducting block in a reciprocating mode. In the actual processing process, when the molybdenum wire moves reversely, sparks are generated between the molybdenum wire and the conductive block, and the sparks are not uniform in size. But results in slower wire cutting speed, increased loss between the molybdenum wire and the conductive block, and deeper grooves in the surface of the conductive block. The groove is easy to clamp the molybdenum wire during installation or cutting processing of the molybdenum wire, and the molybdenum wire is finally broken due to increased cutting resistance; poor conductivity, poor stability, and other undesirable phenomena are also likely to occur. Therefore, there is a need for a conductive device to solve the problem of the molybdenum wire being broken after the groove is formed between the molybdenum wire and the conductive block.

Disclosure of Invention

An object of the utility model is to provide a wire-electrode cutting electric installation overcomes former electric installation molybdenum filament and easily produces the shortcoming that poor, the electrically conductive poor stability of electrically conducting appears in the slot with the conducting block.

A wire-electrode cutting electric installation which characterized in that: the pulse power supply negative electrode lead wire comprises an eccentric conductive rod, a locking nut, a machine tool body supporting frame, a molybdenum wire, a circular conductive block, a transition bush, a nut, a ball bearing and a power supply negative electrode lead wire, wherein the eccentric conductive rod is fixed on the machine tool body supporting frame through the locking nut, an inner ring of the ball bearing is locked by the nut after being matched and connected with the eccentric conductive rod, an outer ring of the ball bearing is tightly matched with an inner hole of the transition bush, the transition bush is installed at two ends of the circular conductive block and is in interference fit with the circular conductive block, and the molybdenum wire. The conductive block generates self-rotation through the bearing, and the adverse phenomena of deep grooves, poor conduction, poor stability and the like generated on the surface of the conductive block are overcome; the gap between the molybdenum wire and the circular conductive block is adjusted through the eccentricity of the eccentric conductive rod, and the phenomenon of uneven discharge caused by the gap is solved.

The utility model has the advantages that: the utility model discloses self gyration is realized through ball bearing connection to circular conducting block and eccentric conducting rod, reduces the stiction between molybdenum filament and the circular conducting block. The contact surface gap between the molybdenum wires and the tensioning degree of the molybdenum wires are adjusted by utilizing the eccentricity between the front end rod part and the rear end rod part of the eccentric conducting rod, a series of problems that the molybdenum wires are pulled apart due to the fact that deep grooves are cut between the conducting block and the molybdenum wires and the cutting resistance is increased due to the fact that the molybdenum wires are clamped are solved, the purpose that wire breakage cannot occur due to the fact that the deep grooves are generated is finally achieved, good and stable conducting performance can be provided, meanwhile, the part processing quality is improved, and the processing efficiency is improved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a side view of the structure of FIG. 1;

in the figure: the device comprises an eccentric conducting rod 1, a locking nut 2, a machine tool body support frame 3, a molybdenum wire 4, a circular conducting block 5, a transition bush 6, a nut 7, a ball bearing 8 and a power supply negative lead 9.

Detailed Description

The structure of the present invention will be described in detail with reference to the accompanying drawings:

a wire-electrode cutting electric installation which characterized in that: the device comprises an eccentric conducting rod 1, a locking nut 2, a machine tool body support frame 3, a molybdenum wire 4, a circular conducting block 5, a transition bush 6, a nut 7, a ball bearing 8 and a power supply negative electrode lead 9, wherein the eccentric conducting rod 1 is fixed on the machine tool body support frame 3 through the locking nut 2, and an inner ring of the ball bearing 8 is locked by the nut 7 after being matched and connected with the eccentric conducting rod 1, so that the circular conducting block 5 is prevented from moving left and right. The outer ring of the ball bearing 8 is tightly matched with the inner hole of the transition bush 6, the transition bush 6 is arranged at two ends of the circular conducting block 5, the ball bearing and the transition bush are in interference fit, and the molybdenum wire 4 is connected with the cathode lead 9 of the pulse power supply through the circular conducting block 5. The contact surface between the molybdenum wire 4 and the circular conductive block 5 is well adjusted by utilizing the eccentricity of the eccentric conductive rod 1, so that the current can be fully transmitted to the molybdenum wire 4 through the circular conductive block 5. When the molybdenum wire 4 moves in a reciprocating manner on the surface of the circular conductive block 5, the circular conductive block 5 is driven to rotate along the eccentric conductive rod 1 under the action of the ball bearing 8. The friction mode is changed from the original sliding friction into rolling friction, so that the abrasion loss between the two is reduced, and the phenomenon of deep grooves in the round conductive block 5 is avoided. The molybdenum wire 4 makes reciprocating circular wire moving motion on the machine tool, and simultaneously discharges continuously to generate certain heat. With the increase of the processing time, the molybdenum wire 4 is lengthened due to the ductility of the metal, so that the tension of the original molybdenum wire is gradually reduced and eliminated, and a gap is formed between the molybdenum wire 4 and the circular conductive block 5, so that the contact is unstable and the discharge is uneven. The gap between the two can be adjusted by the eccentricity of the eccentric conductive rod 1. The device solves a series of problems of uneven discharge caused by gaps and broken wires caused by deep grooves generated by surface friction of the circular conductive block 5.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. For those skilled in the art to which the invention pertains, equivalent substitutes or obvious modifications may be made without departing from the spirit of the invention, and the same properties or uses are deemed to fall within the scope of the invention as defined by the claims appended hereto.

Claims (1)

1. The utility model provides a wire-electrode cutting conducting block device which characterized in that: the machine tool comprises an eccentric conducting rod (1), a locking nut (2), a machine tool body support frame (3), molybdenum wires (4), a circular conducting block (5), a transition bushing (6), a nut (7), a ball bearing (8) and a power supply negative electrode lead (9), wherein the eccentric conducting rod (1) is fixed on the machine tool body support frame (3) through the locking nut (2), an inner ring of the ball bearing (8) is locked by the nut (7) after being connected with the eccentric conducting rod (1) in a matched mode, an outer ring of the ball bearing (8) is tightly matched with an inner hole of the transition bushing (6), the transition bushing (6) is installed at two ends of the circular conducting block (5), the two are in interference fit, and the molybdenum wires (4) are connected with the pulse power supply negative electrode lead (9) through the circular.