Wire stabilizing device for wire cut electrical discharge machining

Abstract

The utility model provides a wire stabilizing device for wire cut electrical discharge machining, which comprises a connecting seat, the connecting seat is of a C-shaped structure, the two ends of the connecting seat are both provided with lug plates which are parallel to each other, and a first sheet wheel and a second sheet wheel are rotatably arranged between the two lug plates through a shaft rod. Annular grooves are machined in the annular side face of the first piece wheel and the annular side face of the second piece wheel correspondingly, the two annular grooves form an annular channel used for limiting the moving track of a molybdenum wire, the cross section of the annular channel is in a U shape, and the first piece wheel is connected with the second piece wheel through a plurality of inner hexagon screws. The godet wheel has the advantages that the godet wheel is divided into two parts, and replacement cost of the godet wheel is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a wire stabilizing device for wire cut electrical discharge machining, and belongs to the field of wire cut electrical discharge machining. BACKGROUND

[0002] In wire cut electrical discharge machining, molybdenum wire is operated at high speed for discharge cutting along with the rotation of a wire guide wheel. The wire guide wheel has a ring-shaped channel with a cross section of "U" shape on its ring-shaped side. When the molybdenum wire deviates in position during operation, the inner wall of one side of the ring-shaped channel with a cross section of "U" shape on the wire guide wheel is excessively pressed, which causes severe wear of the inner wall of one side of the ring-shaped channel with a cross section of "U" shape on the wire guide wheel and no wear of the inner wall of the other side. The wire guide wheel needs to be replaced as a whole, which is high in maintenance and replacement cost. SUMMARY

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a wire stabilizing device for wire cut electrical discharge machining to solve the problems in the background art. The utility model divides the wire guide wheel into two parts, thereby reducing the cost of replacing the wire guide wheel.

[0004] To achieve the above-mentioned purpose, the utility model is implemented by the following technical scheme: a wire stabilizing device for wire cut electrical discharge machining, comprising a connecting seat, the connecting seat is a "C" shaped structure, both ends of the connecting seat are provided with ear plates parallel to each other, a first sheet wheel and a second sheet wheel are rotatably installed between the two ear plates through a shaft rod, a ring-shaped groove is formed on the ring-shaped side of the first sheet wheel and the ring-shaped side of the second sheet wheel, the two ring-shaped grooves form a ring-shaped channel with a cross section of "U" shape for limiting the moving track of the molybdenum wire, and the first sheet wheel is connected with the second sheet wheel through a plurality of internal hexagonal screws.

[0005] Further, a plurality of countersunk holes are formed on the ring-shaped side of the second sheet wheel away from the first sheet wheel, and the internal hexagonal screws are threadedly connected with the first sheet wheel after penetrating through the countersunk holes.

[0006] Further, a plurality of limiting grooves are formed on the ring-shaped side of the first sheet wheel away from the second sheet wheel, a plurality of through holes aligned with the countersunk holes are formed on the ring-shaped side of the first sheet wheel facing the second sheet wheel, the through holes are communicated with the limiting grooves, an insertion block is inserted into the limiting grooves, a screw hole is formed on one side of the insertion block, and one end of the internal hexagonal screw is threadedly connected in the screw hole after penetrating through the through hole.

[0007] Further, the cross section of the insertion block is rectangular, and the cross section of the limiting groove is rectangular.

[0008] Furthermore, a shaft is installed between the two ear plates by screws, and a connecting sleeve connected to the shaft by a bearing is fitted on the shaft. The first wheel and the second wheel are connected to the connecting sleeve by multiple screws.

[0009] Furthermore, a pressure roller for holding the molybdenum wire is provided on one side of the connecting seat. The pressure roller is in rolling contact with the annular side of the first and second rollers. A U-shaped frame is provided on the outside of the pressure roller and is rotatably connected to the pressure roller. The two ends of the U-shaped frame are respectively attached to two ear plates. The end of the U-shaped frame is connected to the shaft by screws.

[0010] Furthermore, a bent portion is connected and fixed at one end of the U-shaped frame away from the ear plate, and an arc-shaped plate is connected and fixed at the other end of the bent portion away from the U-shaped frame. The arc-shaped plate is arranged concentrically with the first wheel and the second wheel, and the arc-shaped plate is located on the outside of the "U"-shaped annular channel.

[0011] Furthermore, the side of the first wheel facing away from the second wheel is recessed in an annular shape at equal intervals to form a plurality of first grooves, and the side of the second wheel facing away from the first wheel is recessed in an annular shape at equal intervals to form a plurality of second grooves.

[0012] The beneficial effects of this utility model are:

[0013] 1. Connect the first and second wheels with hexagonal screws to form a guide wheel. This splits the guide wheel into two parts. When a ring groove wears due to molybdenum wire misalignment, simply replace the corresponding first or second wheel to reduce the cost of guide wheel replacement.

[0014] 2. Insert the insert block with the machined screw hole into the limiting groove to assemble the insert block with the first wheel. If the screw hole is damaged during the assembly with the internal hexagon screw, the insert block can be replaced. Compared with machining the screw hole on the first wheel, there is no need to replace the first wheel, thus reducing replacement costs. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the wire stabilizing device for wire electrical discharge cutting according to the present invention;

[0017] Figure 2 This is a perspective view of a wire stabilizing device for wire electrical discharge cutting according to this utility model.

[0018] Figure 3This is an exploded view of the insert block, internal hexagon screw, connecting sleeve, first wheel and second wheel in the wire stabilizing device for wire electrical discharge cutting according to the present invention.

[0019] Figure 4 This is an exploded view of the insert block, hexagonal screw, connecting sleeve, first wheel and second wheel in the wire stabilizing device for wire EDM of this utility model from another perspective.

[0020] In the diagram: 1-connecting seat, 2-insertion block, 3-first wheel, 4-first groove, 5-ear plate, 6-U-shaped frame, 7-bending part, 8-arc plate, 9-pressure roller, 10-hex socket screw, 11-second wheel, 12-second groove, 13-shaft, 14-screw hole, 15-limiting groove, 16-connecting sleeve, 17-annular groove, 18-countersunk hole, 19-through hole. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please see Figure 1 and Figure 2 This utility model provides a technical solution: a wire stabilizing device for wire electrical discharge cutting, including a connecting seat 1, the connecting seat 1 having a "C" shaped structure, and ear plates 5 that are parallel to each other installed at both ends of the connecting seat 1. The ear plates 5 and the connecting seat 1 are integrally formed. Multiple fixing holes are provided on one side of the connecting seat 1, and the connecting seat 1 is installed at the required position using the fixing holes to complete the restriction of the position of the connecting seat 1.

[0023] See Figures 1-4 A shaft 13 is installed between the two ear plates 5 by screws. A connecting sleeve 16 is fitted onto the shaft 13 and connected to it via a bearing. The first wheel 3 and the second wheel 11 are fitted onto the connecting sleeve 16 and connected to it by multiple screws. Annular grooves 17 are machined on the annular side of both the first wheel 3 and the second wheel 11. The two annular grooves 17 form a U-shaped annular channel to limit the movement trajectory of the molybdenum wire. The first wheel 3 is connected to the second wheel 11 by multiple hexagonal socket head cap screws 10. The first wheel 3 and the second wheel 11 are connected to form a wire guide wheel, thus splitting the wire guide wheel into two. When an annular groove 17 is worn due to molybdenum wire misalignment, the corresponding first wheel 3 or second wheel 11 can be replaced, reducing the cost of replacing the wire guide wheel. Multiple first grooves 4 are formed by annular equidistant recesses on the side of the first wheel 3 facing away from the second wheel 11, and multiple second grooves 12 are formed by annular equidistant recesses on the side of the second wheel 11 facing away from the first wheel 3, reducing the weight of the first wheel 3 and the second wheel 11.

[0024] See Figures 1-4 The second wheel 11 has multiple countersunk holes 18 equidistantly arranged in an annular pattern on the side facing away from the first wheel 3. The first wheel 3 has multiple rectangular limiting grooves 15 equidistantly arranged in an annular pattern on the side facing away from the second wheel 11. The first wheel 3 has multiple through holes 19 equidistantly arranged in an annular pattern on the side facing the second wheel 11, which are aligned with the countersunk holes 18. The through holes 19 communicate with the limiting grooves 15. A rectangular insert 2 is inserted into the limiting groove 15. One side of the insert 2 has a screw hole 14. One end of the hexagon socket screw 10 passes through the through hole 19 and is threaded into the screw hole 14, so that the insert 2 with the screw hole 14 is inserted into the limiting groove 15, realizing the assembly of the insert 2 and the first wheel 3. When the screw hole 14 is damaged during the assembly with the hexagon socket screw 10, the insert 2 can be replaced. Compared with machining the screw hole 14 on the first wheel 3, it is not necessary to replace the first wheel 3, thus reducing the replacement cost.

[0025] See Figure 1 and Figure 2 A pressure roller 9 for holding molybdenum wire is provided on one side of the connecting seat 1. The pressure roller 9 rolls in contact with the annular side of the first wheel 3 and the second wheel 11. A U-shaped frame 6 is provided on the outside of the pressure roller 9 and is rotatably connected to the pressure roller 9. The two ends of the U-shaped frame 6 are respectively attached to the two ear plates 5. The end of the U-shaped frame 6 is connected to the shaft 13 by screws. The guide wheel formed by the first wheel 3 and the second wheel 11 cooperates with the pressure roller 9 to improve the guiding effect of the molybdenum wire. A bending part 7 is connected and fixed at the end of the U-shaped frame 6 away from the ear plate 5. An arc plate 8 is connected and fixed at the end of the bending part 7 away from the U-shaped frame 6. The arc plate 8 is arranged concentrically with the first wheel 3 and the second wheel 11. The arc plate 8 is set on the outside of the "U"-shaped annular channel. The arc plate 8 plays a role in assisting to limit the movement trajectory of the molybdenum wire.

[0026] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An electric discharge wire cutting wire stabilizing device comprising a connecting seat (1), characterized in that: The connecting seat (1) is a "C" shaped structure, both ends of the connecting seat (1) are provided with ear plates (5) parallel to each other, a first gear wheel (3) and a second gear wheel (11) are rotatably installed between the two ear plates (5) through a shaft (13), the annular side of the first gear wheel (3) and the annular side of the second gear wheel (11) are both provided with annular grooves (17), the two annular grooves (17) form a ring-shaped channel with a "U" shaped cross section for limiting the moving track of the molybdenum wire, and the first gear wheel (3) is connected with the second gear wheel (11) through a plurality of inner hexagonal screws (10).

2. The wire-stabilizing device for wire electrical discharge machining according to claim 1, wherein: The side of the second gear wheel (11) away from the first gear wheel (3) is provided with a plurality of countersunk holes (18) arranged at equal intervals in a ring shape, and the inner hexagonal screws (10) are threadedly connected with the first gear wheel (3) after penetrating through the countersunk holes (18).

3. The wire-stabilizing device for wire electrical discharge machining according to claim 2, wherein: The side of the first gear wheel (3) away from the second gear wheel (11) is provided with a plurality of limiting grooves (15) arranged at equal intervals in a ring shape, and the side of the first gear wheel (3) facing the second gear wheel (11) is provided with a plurality of through holes (19) aligned with the countersunk holes (18) and arranged at equal intervals in a ring shape, the through holes (19) are communicated with the limiting grooves (15), and the limiting grooves (15) are inserted with plug blocks (2), one side of the plug block (2) is provided with a threaded hole (14), and one end of the inner hexagonal screw (10) is threadedly connected in the threaded hole (14) after penetrating through the through hole (19).

4. The wire-stabilizing device for wire-cut electrical discharge machining according to claim 3, wherein: The plug block (2) has a rectangular cross section, and the limiting groove (15) has a rectangular cross section.

5. The wire-stabilizing device for wire-cut electrical discharge machining according to claim 1, wherein: The shaft (13) is installed between the two ear plates (5) through screws, the shaft (13) is provided with a connecting sleeve (16) connected with the shaft (13) through a bearing, and the first gear wheel (3) and the second gear wheel (11) are connected with the connecting sleeve (16) through a plurality of screws.

6. The wire-stabilizing device for wire-cut electrical discharge machining according to claim 1, wherein: One side of the connecting seat (1) is provided with a pressure wheel (9) for pressing the molybdenum wire, the pressure wheel (9) is in rolling contact with the annular side of the first gear wheel (3) and the second gear wheel (11), the outer side of the pressure wheel (9) is provided with a U-shaped frame (6) rotatably connected with the pressure wheel (9), both ends of the U-shaped frame (6) are respectively attached to the two ear plates (5), and the end of the U-shaped frame (6) is connected with the shaft (13) through screws.

7. The wire-stabilizing device for wire electrical discharge machining according to claim 6, wherein: The end of the U-shaped frame (6) away from the ear plate (5) is connected and fixed with a bent part (7), the end of the bent part (7) away from the U-shaped frame (6) is connected and fixed with an arc-shaped plate (8), the arc-shaped plate (8) is concentrically arranged with the first gear wheel (3) and the second gear wheel (11), and the arc-shaped plate (8) is arranged on the outer side of the "U" shaped ring-shaped channel.

8. The wire-stabilizing device for wire-cut electrical discharge machining according to claim 1, wherein: The side of the first gear wheel (3) away from the second gear wheel (11) is recessed to form a plurality of first grooves (4) arranged at equal intervals in a ring shape, and the side of the second gear wheel (11) away from the first gear wheel (3) is recessed to form a plurality of second grooves (12) arranged at equal intervals in a ring shape.

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