Wire cutting machine

Abstract

The utility model relates to a wire cutting machine. The problems that in the prior art, a wire cutting machine is complex in structure, and the tension degree is difficult to adjust flexibly are solved. The device comprises a supporting frame, a plane cutting pedestal is arranged on the supporting frame, an electric control cabinet is arranged on the supporting frame, a material positioning assembly is arranged on the plane cutting pedestal in a sliding mode, a wire guide frame arranged in a U shape is arranged on the plane cutting pedestal, wire guide tensioning mechanisms are arranged at the front end and the rear end of the wire guide frame respectively, and a wire guide tensioning assembly is arranged at the bottom of the plane cutting pedestal. The guide wire tensioning assembly is connected with an electric control cabinet, the electric control cabinet is connected with the two ends of a cutting wire, one end of the cutting wire penetrates in from one end of the guide wire frame, penetrates out from the other end of the guide wire frame and sequentially passes through the two guide wire tensioning mechanisms and the plane cutting pedestal to be connected with the guide wire tensioning assembly, and the other end of the cutting wire is connected with an elastic assembly. The device has the advantages of being simple in structure, convenient and fast to operate, capable of flexibly adjusting the tension degree of the cutting wire and good in practical effect.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment technology, specifically to a wire cutting machine. Background Technology

[0002] In existing technology, wire EDM machines include a column, an upper wire frame, a lower wire frame, a wire storage tray, and guide wheels respectively mounted on the upper and lower wire frames to tension a molybdenum wire between the wire storage tray and the guide wheels. A height adjustment mechanism is provided between the upper wire frame and the column, allowing the upper wire frame to be adjusted and positioned relative to the column in the height direction. However, the lower wire frame is fixed to the column, and its height cannot be adjusted. When cutting the workpiece, because the worktable containing the workpiece cannot move up and down, the front ends of the upper and lower wire frames cannot reach into the cavities of workpieces with different heights. This is especially problematic when some workpieces have multiple cavities in the vertical direction; the fixed lower wire frame prevents the wire EDM machine from reaching into these cavities for processing, resulting in poor operational flexibility. Furthermore, existing wire EDM equipment has a complex structure and makes it difficult to flexibly adjust the tension according to cutting requirements, leading to unsatisfactory performance.

[0003] To address the shortcomings of existing technologies, people have conducted long-term explorations and proposed various solutions. For example, Chinese patent literature discloses a wire EDM machine tool [CN02113199.6], which includes a column, an upper wire frame, a lower wire frame, a wire storage tray, guide wheels respectively disposed on the upper and lower wire frames, and a molybdenum wire tensioned between the wire storage tray and the guide wheels. A height adjustment mechanism is provided between the upper and lower wire frames and the column. Because the height of the lower wire frame can be adjusted and positioned, the heights of the lower and upper wire frames can be properly adjusted during use, allowing both the lower and upper wire frames to extend into the workpiece cavity for cutting. Even if there are different cavities in the height direction, and each cavity cuts different lines in the vertical direction, this invention can still perform processing operations.

[0004] The above solution has solved the problem of poor operational flexibility of wire cutting machines in the existing technology to a certain extent. However, the solution still has many shortcomings, such as complex structure and difficulty in flexibly adjusting tension according to cutting needs, which affects the performance. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a wire cutting machine.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a wire cutting machine, including a support frame, a flat cutting table on the support frame, an electrical control cabinet on the support frame, a material positioning component slidably mounted on the flat cutting table, a U-shaped wire guide frame on the flat cutting table, wire tensioning mechanisms at the front and rear ends of the wire guide frame, a wire tensioning component at the bottom of the flat cutting table, the wire tensioning component connected to the electrical control cabinet, and the electrical control cabinet connected to both ends of the cutting wire, one end of the cutting wire passing through one end of the wire guide frame and exiting from the other end, passing sequentially through two wire tensioning mechanisms and the flat cutting table and connecting to the wire tensioning component, and the other end of the cutting wire connected to an elastic component.

[0007] In the aforementioned wire cutting machine, a scale is provided on one side of the flat cutting table, and a rectangular through hole is provided on the flat cutting table for the cutting wire to pass through.

[0008] In the aforementioned wire cutting machine, the material positioning component includes a linkage crossbeam that is horizontally slidably disposed on the upper surface of the planar cutting table. One end of the linkage crossbeam is provided with a clamping support plate and the other end is provided with a locking clamping block. The locking clamping block is locked to one side of the planar cutting table by a locking adjusting screw.

[0009] In the aforementioned wire cutting machine, an L-shaped material positioning baffle is provided on the linkage cross frame, and the material positioning baffle is positioned on the linkage cross frame by several fixing screws.

[0010] In the aforementioned wire cutting machine, the wire guide frame includes a vertically arranged front guide rod and a rear fixed rod. The upper ends of the front guide rod and the rear fixed rod are fixedly connected by a horizontally arranged connecting rod, and the front guide rod, the connecting rod, and the rear fixed rod are integrally formed.

[0011] In the aforementioned wire cutting machine, the wire tensioning mechanism includes tensioning wheels that are respectively installed in the front guide rod and the rear fixed rod via connecting shafts. The front guide rod and the rear fixed rod are provided with strip-shaped lifting grooves that allow the connecting shaft to be raised and lowered, and the two ends of the connecting shaft are connected to the linkage shaft located at the upper end of the tensioning wheel.

[0012] In the aforementioned wire EDM machine, the linkage shaft is driven and positioned by a lifting adjustment screw mounted on the connecting rod, and the front guide screw and the rear fixed rod are provided with movable clearance grooves for adjusting the position of the corresponding linkage shaft.

[0013] In the aforementioned wire cutting machine, the wire guide tensioning assembly includes a horizontal mounting frame disposed at the bottom of the planar cutting table. One end of the horizontal mounting frame is flush with a rectangular through hole and the end is provided with a wire guide wheel. A tensioning adjustment seat is slidably disposed on the horizontal mounting frame, and a wire guide wheel is disposed inside the tensioning adjustment seat.

[0014] In the aforementioned wire cutting machine, one end of the cutting wire passes sequentially through a rectangular through hole, a guide wheel, and a wire guide wheel, and is connected to a tensioning block set on the ground.

[0015] In the aforementioned wire cutting machine, the elastic component includes a positioning block disposed at the end of the horizontal assembly frame away from the guide wheel. An elastic tension spring is connected to the positioning block via a connecting screw, and one end of the elastic tension spring is connected to a limit terminal plate, which is connected to the cutting wire.

[0016] Compared with existing technologies, the advantages of this utility model are: simple structure and convenient operation. It can not only adjust the tension at both ends of the cutting wire, but also achieve effective positioning after adjustment. Secondly, by setting an elastic component in the cutting wire, it can effectively prevent the cutting wire from breaking when it is taut and tensioned to cut rigid materials, providing a certain degree of toughness to the cutting wire, resulting in good performance and excellent flexibility. Attached Figure Description

[0017] Figure 1 This is a side view of the overall structure of this utility model;

[0018] Figure 2 This is an assembly diagram of the material positioning component and the planar cutting table in this utility model;

[0019] Figure 3 This is a detailed structural diagram of the material positioning component in this utility model;

[0020] Figure 4 This is a schematic diagram of the guide wire tensioning mechanism in this utility model;

[0021] In the diagram: 1. Support frame; 2. Flat cutting table; 21. Scale; 22. Rectangular through hole; 3. Electrical control cabinet; 4. Material positioning assembly; 41. Linkage crossbeam; 42. Clamping support plate; 43. Locking clamping block; 44. Locking adjustment screw; 45. Material positioning baffle; 46. Fixing screw; 5. Wire guide frame; 51. Front wire guide rod; 52. Rear fixing rod; 53. Connecting rod; 6. Wire tensioning mechanism; 61. Connecting shaft; 62. Tensioning wheel; 63. Strip lifting groove; 64. Linkage shaft; 65. Lifting adjustment screw; 66. Movable clearance groove; 7. Wire tensioning assembly; 71. Horizontal assembly crossbeam; 72. Wire guide wheel; 73. Tensioning adjustment seat; 74. Tensioning block; 8. Cutting wire; 9. Elastic assembly; 91. Positioning block; 92. Connecting screw; 93. Elastic tension spring; 94. Limiting terminal block. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 1-4As shown, a wire cutting machine includes a support frame 1, a flat cutting table 2 on the support frame 1, and an electrical control cabinet 3 with a pulse generator inside the support frame 1. A material positioning component 4 is slidably mounted on the flat cutting table 2, and a U-shaped wire guide frame 5 is mounted on the flat cutting table 2. Wire guide tensioning mechanisms 6 are respectively provided at the front and rear ends of the wire guide frame 5, and a wire guide tensioning component 7 is provided at the bottom of the flat cutting table 2. The wire guide tensioning component 7 is connected to the electrical control cabinet 3, and the electrical control cabinet 3 is connected to both ends of a cutting wire 8. One end of the cutting wire 8 enters from one end of the wire guide frame 5 and exits from the other end, passing sequentially through two wire guide tensioning mechanisms 6 and the flat cutting table 2 before connecting to the wire guide tensioning component 7. The other end of the cutting wire 8 is connected to an elastic component 9.

[0024] The planar cutting table 2 has a scale 21 on one side and a rectangular through hole 22 on the planar cutting table 2 for the cutting wire 8 to pass through.

[0025] The scale 21 provides a precise cutting position for the material. The cutting wire 8 is a metal wire connected to the pulse generator. During cutting, the pulse generator in the electrical control cabinet 3 is connected to the cutting wire 8 and energized. A pulse voltage is generated between the cutting wire 8 and the material to be cut, which in turn generates a spark discharge to achieve cutting.

[0026] Obviously, the material positioning component 4 includes a linkage crossbeam 41 that is horizontally slidably disposed on the upper surface of the planar cutting table 2. One end of the linkage crossbeam 41 is provided with a clamping support plate 42 and the other end is provided with a locking clamping block 43. The locking clamping block 43 is locked to one side of the planar cutting table 2 by a locking adjusting screw 44.

[0027] As can be seen, the linkage crossbeam 41 is provided with an L-shaped material positioning baffle 45, which is positioned on the linkage crossbeam 41 by a number of fixing screws 46.

[0028] After adjusting the material cutting position, the locking clamping block 43 is locked using the locking adjusting screw 44, thereby fixing the material positioning baffle 45.

[0029] Furthermore, the wire guide frame 5 includes a vertically arranged front wire guide rod 51 and a rear fixing rod 52. The upper ends of the front wire guide rod 51 and the rear fixing rod 52 are fixedly connected by a horizontally arranged connecting rod 53, and the front wire guide rod 51, the connecting rod 53 and the rear fixing rod 52 are integrally formed.

[0030] The bottom of the front lead screw 51 is on the same axis as the rectangular through hole 22, and the rear fixing rod 52 is fixed by an adjusting lock sleeve set on the support frame 1.

[0031] In detail, the wire tensioning mechanism 6 includes tensioning wheels 62 that are respectively installed in the front guide rod 51 and the rear fixed rod 52 via connecting shafts 61. The front guide rod 51 and the rear fixed rod 52 are provided with strip-shaped lifting grooves 63 for the connecting shaft 61 to be raised and lowered, and the two ends of the connecting shaft 61 are connected to the linkage shafts 64 located at the upper end of the tensioning wheels 62.

[0032] Preferably, the linkage shaft 64 is driven and positioned by a lifting adjustment screw 65 provided on the connecting rod 53, and the front guide screw 51 and the rear fixed rod 52 are provided with movable clearance grooves 66 for adjusting the position of the corresponding linkage shaft 64.

[0033] The lifting and lowering of the adjusting screw 65 drives the lifting and lowering of the linkage shaft 64, thereby raising and lowering the tension wheel 62 and achieving the purpose of tightening and adjusting the cutting wire 8.

[0034] Specifically, the wire tensioning assembly 7 includes a horizontal mounting frame 71 disposed at the bottom of the planar cutting table 2. One end of the horizontal mounting frame 71 is flush with the rectangular through hole 22 and the end is provided with a wire guide wheel 72. A tensioning adjustment seat 73 is slidably disposed on the horizontal mounting frame 71, and a wire guide wheel is disposed inside the tensioning adjustment seat 73.

[0035] Furthermore, one end of the cutting wire 8 passes through the rectangular through hole 22, the wire guide wheel 72, and the wire guide wheel in sequence and is connected to the tensioning block 74 set on the ground.

[0036] The tension block 74 is used to ensure the fixation of one end of the cutting wire 8, and the wire guide wheel 72 and the wire guide wheel are used to ensure that the lower end of the cutting wire 8 is in a tensioned state. The tension of the lower end of the cutting wire 8 is adjusted by sliding the tension adjustment seat 73 back and forth. The cutting wire 8 here is conductive and is used to conduct electricity between the cutting wire 8 and the pulse generator.

[0037] In addition, the elastic component 9 includes a positioning block 91 disposed at the end of the horizontal assembly crossbeam 71 away from the guide wheel 72. An elastic tension spring 93 is connected to the positioning block 91 via a connecting screw 92, and one end of the elastic tension spring 93 is connected to a limit terminal plate 94, which is connected to the cutting wire 8.

[0038] The elastic component 9 is mainly used to provide toughness for the cutting wire 8 during cutting. That is, during cutting, one end of the cutting wire 8 is tightened by the tension block 74, while the other end is elastically tightened by the connecting screw 92 with an elastic spring 93. During wire cutting, the cutting wire 8 has an elastic tension when it comes into contact with the cutting material, avoiding damage to the cutting wire caused by rigid cutting. Secondly, this application limits the stretching of the elastic spring 93 by configuring a limit connection plate 94, thereby controlling the elastic tension stroke and avoiding the cutting wire cutting force being too soft due to the elastic tension of the elastic spring 93, thereby achieving the purpose of cutting toughness.

[0039] In summary, the principle of this embodiment is as follows: Before use, the tension of the upper end of the cutting wire 8 is adjusted by raising and lowering the wire tensioning mechanism 6, and the lower end of the cutting wire 8 is slidably tightened by the wire tensioning assembly 7 to ensure the perpendicularity and tension of the cutting wire 8. During the cutting process, the cutting wire 8 is connected to the pulse generator and energized, and a pulse voltage is generated between the cutting wire 8 and the material to be cut, thereby generating a spark discharge to achieve cutting. During the forward movement of the material to be cut, the cutting wire 8 is subjected to frictional force, and the elastic component 9 provides cutting toughness to prevent the cutting wire 8 from being damaged.

[0040] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0041] Although this article uses a lot of terms such as support frame 1, flat cutting table 2, scale 21, rectangular through hole 22, electrical control cabinet 3, material positioning assembly 4, linkage crossbeam 41, clamping support plate 42, locking clamping block 43, locking adjusting screw 44, material positioning baffle 45, fixing screw 46, wire guide frame 5, front wire guide rod 51, rear fixing rod 52, connecting rod 53, wire guide tensioning mechanism 6, connecting shaft 61, tensioning wheel 62, strip lifting groove 63, linkage shaft 64, lifting adjusting screw 65, movable clearance groove 66, wire guide tensioning assembly 7, horizontal assembly crossbeam 71, wire guide wheel 72, tension adjusting seat 73, tensioning block 74, cutting wire 8, elastic assembly 9, positioning block 91, connecting screw 92, elastic tension spring 93, limit terminal block 94, the possibility of using other terms cannot be ruled out. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any kind of additional limitation would be contrary to the spirit of this utility model.

Claims

1. A wire cutting machine comprising a support frame (1) provided with a planar cutting seat (2) and an electric control cabinet (3) with a pulse generator inside, characterised in that, The plane cutting pedestal (2) is provided with a material positioning assembly (4) sliding on the plane cutting pedestal (2), and a U-shaped wire guide frame (5) is arranged on the plane cutting pedestal (2), both ends of the wire guide frame (5) are respectively provided with wire guide tensioning mechanisms (6), and the bottom of the plane cutting pedestal (2) is provided with a wire guide tensioning assembly (7), the wire guide tensioning assembly (7) is connected with an electrical control cabinet (3), and both ends of the electrical control cabinet (3) are connected with cutting wire (8), one end of the cutting wire (8) penetrates into one end of the wire guide frame (5) and penetrates out from the other end and sequentially passes through two wire guide tensioning mechanisms (6) and the plane cutting pedestal (2) and the wire guide tensioning assembly (7), and the other end of the cutting wire (8) is connected with an elastic assembly (9).

2. A wire saw as claimed in claim 1, characterized in that The plane cutting pedestal (2) is provided with a scale (21) on one side, and the plane cutting pedestal (2) is provided with a rectangular through hole (22) through which the cutting wire (8) passes.

3. A wire saw as claimed in claim 1, characterized in that The material positioning assembly (4) comprises a linkage cross frame (41) horizontally slidingly arranged on the upper end face of the plane cutting pedestal (2), one end of the linkage cross frame (41) is provided with a clamping support plate (42), and the other end is provided with a locking clamping block (43), and the locking clamping block (43) is locked on one side of the plane cutting pedestal (2) through a locking adjusting screw (44).

4. A wire saw as claimed in claim 3, characterized in that The linkage cross frame (41) is provided with a material positioning baffle (45) arranged in an L shape, and the material positioning baffle (45) is positioned on the linkage cross frame (41) through a plurality of fixed screws (46).

5. The wire saw as claimed in claim 1, wherein The wire guide frame (5) comprises a front wire guide rod (51) and a rear fixed rod (52) arranged vertically, the upper ends of the front wire guide rod (51) and the rear fixed rod (52) are fixedly connected through a horizontally arranged connecting rod (53), and the front wire guide rod (51), the connecting rod (53) and the rear fixed rod (52) are integrally formed.

6. A wire saw as claimed in claim 5, characterized in that The wire guide tensioning mechanism (6) comprises a tensioning wheel (62) arranged in the front wire guide rod (51) and the rear fixed rod (52) through a connecting shaft (61), respectively, the front wire guide rod (51) and the rear fixed rod (52) are provided with a strip-shaped lifting groove (63) for lifting the connecting shaft (61), and the connecting shaft (61) is connected with a linkage shaft (64) located at the upper end of the tensioning wheel (62) at both ends.

7. A wire saw as claimed in claim 6, characterized in that The linkage shaft (64) is driven and positioned by a lifting adjusting screw (65) arranged on the connecting rod (53), and the front wire guide rod (51) and the rear fixed rod (52) are provided with a movable accommodation groove (66) for adjusting the position of the corresponding linkage shaft (64).

8. A wire saw as defined in claim 2, wherein The wire guide tensioning assembly (7) comprises a horizontal assembly cross frame (71) arranged at the bottom of the plane cutting pedestal (2), one end of the horizontal assembly cross frame (71) is flush with the rectangular through hole (22), and the end portion is provided with a wire guide wheel (72), the horizontal assembly cross frame (71) is slidingly provided with a tensioning adjusting seat (73), and the tensioning adjusting seat (73) is provided with a wire passing wheel.

9. A wire saw as defined in claim 8, characterized in that The cutting wire (8) is sequentially threaded through the rectangular through hole (22), the guide wire wheel (72) and the wire passing wheel, and is connected to the tensioning block (74) arranged on the ground.

10. A wire saw as claimed in claim 9, characterized in that The elastic assembly (9) comprises a positioning block (91) arranged at the end of the horizontal assembly cross frame (71) away from the guide wire wheel (72), the positioning block (91) is connected with the elastic tension spring (93) through the connecting screw rod (92), one end of the elastic tension spring (93) is connected with the limiting terminal plate (94), and the limiting terminal plate (94) is connected with the cutting wire (8).

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