A wire cutting machine tool for large workpieces

Abstract

A kind of linear cutting machine for large workpiece, including main support and the cutting mechanism being arranged thereon, the cutting mechanism includes molybdenum wire, it is arranged to be able to complete the linear cutting work of workpiece;Linear cutting machine also includes the first tensioning mechanism being arranged on the moving path of molybdenum wire, specifically, the first tensioning mechanism includes bottom block and the vertical rod being vertically arranged thereon, the first movable block is vertically slidably arranged on the vertical rod, first spring is arranged between the first movable block and bottom block, two first fixed wheels are oppositely arranged on the bottom block with gap, first tensioning wheel is arranged on the first movable block, the molybdenum wire is arranged to pass through first tensioning wheel and two first fixed wheels in n shape, first movable block can be elastically pushed by first spring, in turn, a better elastic tensioning effect is played to molybdenum wire, effectively reduce the molybdenum wire vibration in the cutting process, so that linear cutting machine can be suitable for linear cutting operation in large thickness size workpiece.

Description

Technical Field

[0001] This utility model relates to the technical field of wire cutting devices, specifically a wire cutting machine tool for large workpieces. Background Technology

[0002] Wire EDM is a common cutting method for metal workpieces. Specifically, it involves using a molybdenum wire that passes around two horizontal arms to perform wire EDM operations on metal workpieces. To ensure cutting accuracy, the distance between the two horizontal arms is usually not too large to avoid the molybdenum wire vibrating during cutting. However, this method requires the workpiece to have a relatively small thickness, making it unsuitable for wire EDM operations on thick workpieces. Utility Model Content

[0003] To address the technical problems existing in the background art, this utility model provides a wire cutting machine tool for large workpieces.

[0004] The technical solution of this utility model is as follows: A wire cutting machine tool for large workpieces includes a main support and a cutting mechanism mounted thereon. The cutting mechanism includes a molybdenum wire and is configured to perform wire cutting of the workpiece.

[0005] As the core technical concept of this utility model, the wire EDM machine tool also includes a first tensioning mechanism disposed on the moving path of the molybdenum wire. Specifically, the first tensioning mechanism includes a base block and a vertically disposed vertical rod on it. A first movable block is vertically slidably disposed on the vertical rod. A first spring is disposed between the first movable block and the base block. Two first fixed wheels are disposed opposite each other on the base block with a gap. A first tensioning wheel is disposed on the first movable block. The molybdenum wire is disposed in an n-shape around the first tensioning wheel and the two first fixed wheels. Based on this, the first movable block can be elastically pushed by the first spring, thereby playing a good elastic tensioning role on the molybdenum wire, effectively reducing the vibration of the molybdenum wire during the cutting process, so that the wire EDM machine tool can be used for wire cutting operations of workpieces with large thickness.

[0006] As described above, in a preferred embodiment of a wire cutting machine tool for large workpieces, in order to facilitate the adjustment of the magnitude of the elastic force on the first movable block and thus adaptively adjust the elastic tension of the first tensioning mechanism on the molybdenum wire, a first adjusting nut capable of pressing the first movable block is spirally provided on the upper part of the vertical rod.

[0007] As a further preferred embodiment, to ensure smoother sliding of the first movable block along the vertical rod, the vertical rod is provided with two gaps.

[0008] Preferably, in order to ensure that the elastic force on the first movable block can be better fed back to the molybdenum wire, that is, to ensure that the tensioning effect of the molybdenum wire can be better achieved through the first tensioning wheel, the line connecting the centers of the two first fixed wheels and the first tensioning wheel is an isosceles triangle, and the line connecting the centers of the first tensioning wheel and the two first fixed wheels is the waist of the triangle.

[0009] As described above, in terms of the molybdenum wire arrangement, the main support includes two horizontal arms arranged opposite each other, and the cutting mechanism also includes a wire storage component arranged on the main support. The molybdenum wire is arranged to pass around the two horizontal arms and the wire storage component. The first tensioning mechanism is arranged on the moving path of the molybdenum wire between the wire storage component and the lower horizontal arm.

[0010] As a major highlight of this utility model, the wire EDM machine tool also includes a second tensioning mechanism, which is located on the molybdenum wire movement path between the wire storage component and the upper cross arm. Specifically, the second tensioning mechanism includes a mounting frame with two second fixed wheels spaced apart. The second tensioning mechanism also includes a second movable block and a guide rod connected to it. The guide rod slides through the mounting frame, and a second spring is provided between the second movable block and the mounting frame. The second movable block is also provided with a second tensioning wheel. The molybdenum wire is arranged in an n-shape around the second tensioning wheel and the two second fixed wheels. Based on this, the second spring can elastically push the second movable block, thereby further elastically tensioning the molybdenum wire, thus further reducing the vibration of the molybdenum wire during the cutting process and ensuring the cutting accuracy of the wire EDM machine tool.

[0011] As a further preferred embodiment, the upper cross arm is also provided with a negative electrode block that can provide a negative voltage to the molybdenum wire. There are two negative electrode blocks, and the molybdenum wire is arranged in an S-shape around the two negative electrode blocks. By restricting the path of the molybdenum wire, the vibration of the molybdenum wire during the cutting process is further reduced, thereby further ensuring the cutting accuracy of the wire EDM machine.

[0012] The beneficial effects of this utility model are as follows: This utility model is a wire cutting machine tool for large workpieces. The first spring can elastically push the first movable block, thereby providing a good elastic tension for the molybdenum wire. The second spring can elastically push the second movable block, thereby further providing an elastic tension for the molybdenum wire. This effectively reduces the vibration of the molybdenum wire during the cutting process, making the wire cutting machine tool suitable for wire cutting operations of workpieces with large thicknesses, while effectively ensuring the cutting accuracy of the wire cutting machine tool. Attached Figure Description

[0013] The advantages and solutions of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this invention.

[0014] In the attached diagram: Figure 1 This is a schematic diagram of the wire cutting machine tool in the embodiment; Figure 2 This is a schematic diagram of the structure of the first tensioning mechanism in the embodiment; Figure 3 This is a schematic diagram of the second tensioning mechanism in the embodiment; Figure 4 This is a schematic diagram of the cooling mechanism in the embodiment; The components represented by the various reference numerals in the diagram are: 1. Main support; 11. Base frame; 12. Vertical frame; 13. Horizontal arm; 2. Cutting mechanism; 21. Wire storage component; 22. Molybdenum wire; 3. First tensioning mechanism; 31. Base block; 32. Vertical rod; 33. First movable block; 34. First spring; 35. First fixed wheel; 36. First tensioning wheel; 37. First adjusting nut; 4. Second tensioning mechanism; 41. Mounting bracket; 42. Guide rod; 43. Second movable block; 44. Second spring; 45. Second fixed wheel; 46. Second tensioning wheel; 47. Second adjusting nut; 5. Negative electrode block; 6. Cooling mechanism; 61. Connecting plate; 62. Wire hole; 63. Connector; 64. Water passage. Detailed Implementation

[0015] Exemplary embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings.

[0016] Example This embodiment provides a wire cutting machine tool for large workpieces; see [link / reference]. Figure 1 The system includes a main support 1 and a cutting mechanism 2 mounted thereon. The cutting mechanism 2 includes a molybdenum wire 22, which is configured to perform wire cutting of the workpiece. The structure of the wire cutting machine tool (a type of wire cutting machine tool for large workpieces) will be described in detail below with reference to the accompanying drawings.

[0017] In this embodiment, regarding the arrangement of the molybdenum wire 22, the main support 1 includes a base frame 11 and a vertical frame 12 mounted thereon. Two horizontal arms 13 are arranged vertically opposite each other on one side of the vertical frame 12. Several guide wheels are arranged horizontally on the horizontal arms 13. The cutting mechanism 2 also includes a wire storage component 21 mounted on the main support 1 and located on the side of the vertical frame 12 away from the horizontal arms 13. The molybdenum wire 22 is arranged around the guide wheels on the two horizontal arms 13 and the wire storage component 21. The wire cutting operation of the workpiece can be completed by the molybdenum wire 22 between the ends of the two horizontal arms 13 away from the vertical frame 12.

[0018] As one of the core technical concepts of this utility model, the wire cutting machine tool also includes a first tensioning mechanism 3 disposed on the moving path of the molybdenum wire 22. The first tensioning mechanism 3 is fixedly disposed on the base frame 11 and located on the moving path of the molybdenum wire 22 between the wire storage component 21 and the lower cross arm 13.

[0019] Combination Figure 2 Specifically, the structure of the first tensioning mechanism 3 includes a base block 31 fixed on the base frame 11, and a vertical rod 32 vertically arranged on the base block 31. A first movable block 33 is vertically slidably arranged on the vertical rod 32, and a first spring 34 is provided between the first movable block 33 and the base block 31. Two first fixed wheels 35 are spaced apart on the base block 31, and a first tensioning wheel 36 is provided on the first movable block 33. The molybdenum wire 22 is arranged in an n-shape around the first tensioning wheel 36 and the two first fixed wheels 35. Based on this, the first spring 34 can elastically push the first movable block 33, thereby providing a good elastic tension for the molybdenum wire 22, effectively reducing the vibration of the molybdenum wire 22 during the cutting process, making the wire cutting machine tool suitable for wire cutting operations of workpieces with large thickness.

[0020] As a preferred embodiment of this invention, in order to facilitate the adjustment of the magnitude of the elastic force on the first movable block 33 and thereby adaptively adjust the elastic tension of the first tensioning mechanism 3 on the molybdenum wire 22, the upper part of the vertical rod 32 is provided with a first adjusting nut 37 that can press the first movable block 33.

[0021] As a further preferred embodiment, in order to make the sliding of the first movable block 33 along the vertical rod 32 smoother, the vertical rod 32 is provided with two rods at a gap.

[0022] Preferably, in order to ensure that the elastic force on the first movable block 33 can be better fed back to the molybdenum wire 22, that is, to ensure that the tensioning effect of the molybdenum wire 22 can be better achieved by the first tensioning wheel 36, the line connecting the centers of the two first fixed wheels 35 and the first tensioning wheel 36 is an isosceles triangle, and the line connecting the centers of the first tensioning wheel 36 and the two first fixed wheels 35 is the waist of the triangle.

[0023] As a major highlight of this utility model, the wire cutting machine tool also includes a second tensioning mechanism 4, which is located on the moving path of the molybdenum wire 22 between the wire storage component 21 and the upper cross arm 13.

[0024] Combination Figure 3Specifically, the second tensioning mechanism 4 includes a mounting frame 41 installed on the upper end of the vertical frame 12 away from the side of the horizontal arm 13. Two second fixed wheels 45 are provided on the mounting frame 41 with a gap between them. The second tensioning mechanism 4 also includes a second movable block 43 and a guide rod 42 connected to it. The guide rod 42 slides through the mounting frame 41. A second spring 44 is provided between the second movable block 43 and the mounting frame 41. A second tensioning wheel 46 is also provided on the second movable block 43. The molybdenum wire 22 is arranged in an n-shape around the second tensioning wheel 46 and the two second fixed wheels 45. On this basis, the second spring 44 can elastically push the second movable block 43, thereby further elastically tensioning the molybdenum wire 22, thereby further reducing the vibration of the molybdenum wire 22 during the cutting process and ensuring the cutting accuracy of the wire cutting machine.

[0025] As a preferred embodiment of this example, in order to facilitate the adjustment of the elastic force on the second movable block 43 and thus adaptively adjust the elastic tension of the second tensioning mechanism 4 on the molybdenum wire 22, the guide rod 42 is spirally provided with a second adjusting nut 47 that can press the connecting frame through one end.

[0026] As a further preferred embodiment, in order to make the sliding of the second movable block 43 along the vertical rod 32 smoother, the guide rod 42 is provided with two rods at a gap.

[0027] Preferably, in order to ensure that the elastic force on the second movable block 43 can be better fed back to the molybdenum wire 22, that is, to ensure that the tensioning effect of the molybdenum wire 22 can be better achieved by the second tensioning wheel 46, the line connecting the centers of the two second fixed wheels 45 and the second tensioning wheel 46 is an isosceles triangle, and the line connecting the centers of the second tensioning wheel 46 and the two second fixed wheels 45 is the waist of the triangle.

[0028] To facilitate the adjustment of the second tensioning mechanism 4, the connecting frame adopts an F-shaped structure with the opening facing upwards, and the guide rod 42 is set downwards through the F-shaped opening of the connecting frame.

[0029] Specifically, the connecting frame includes a connecting rod, one end of which is fixed to the vertical frame 12, and the other end is inclined to point downwards on the side of the vertical frame 12 away from the horizontal arm 13. The middle and outer ends of the connecting rod are provided with upward protrusions, and two second fixed wheels 45 are respectively fixed on the two protrusions. The guide rod 42 is inclined downwards and passes through the connecting rod between the two protrusions.

[0030] In this embodiment, as a preferred implementation, the upper horizontal arm 13 is also provided with a negative electrode block 5 that can provide a negative voltage to the molybdenum wire 22. There are two negative electrode blocks 5, and the molybdenum wire 22 is arranged in an S-shape around the two negative electrode blocks 5. By restricting the path of the molybdenum wire 22, the vibration of the molybdenum wire 22 during the cutting process is further reduced, thereby further ensuring the cutting accuracy of the wire cutting machine.

[0031] In this embodiment, in order to achieve the cooling of the molybdenum wire 22 after wire cutting, a cooling mechanism 6 is also provided at the outer end of the lower horizontal arm 13.

[0032] Combination Figure 4 Specifically, the cooling mechanism 6 includes a connecting plate 61 horizontally disposed at the outer end of the lower cross arm 13. The connecting plate 61 is provided with a wire hole 62 through which the molybdenum wire 22 can pass vertically. A connector 63 that can be connected to an external water supply device is also provided on one side of the connecting plate 61. A water passage 64 connecting the connector 63 and the wire hole 62 is provided inside the connecting plate 61.

[0033] In this embodiment, in order to facilitate the cutting of thick workpieces and the storage and transportation of the wire EDM machine, the vertical frame 12 and the base frame 11 are detachably connected, and the vertical frame 12 is a multi-segment assembly structure.

Claims

1. A wire cutting machine tool for large workpieces, characterized in that, It includes a main support (1) and a cutting mechanism (2) provided thereon, the cutting mechanism (2) including a molybdenum wire (22), which is configured to perform wire cutting of the workpiece; It also includes a first tensioning mechanism (3) set on the moving path of the molybdenum wire (22); The first tensioning mechanism (3) includes a base block (31) and a vertical rod (32) arranged on it. A first movable block (33) is vertically slidably arranged on the vertical rod (32). A first spring (34) is arranged between the first movable block (33) and the base block (31). Two first fixed wheels (35) are arranged opposite each other on the base block (31). A first tensioning wheel (36) is arranged on the first movable block (33). The molybdenum wire (22) is arranged in an n-shape around the first tensioning wheel (36) and the two first fixed wheels (35).

2. The wire cutting machine tool for large workpieces according to claim 1, characterized in that, The upper part of the vertical rod (32) is spirally provided with a first adjusting nut (37) that can press the first movable block (33).

3. The wire cutting machine tool for large workpieces according to claim 1, characterized in that, The vertical rod (32) has two members at the gap.

4. The wire cutting machine tool for large workpieces according to claim 1, characterized in that, The line connecting the centers of the two first fixed wheels (35) and the first tensioning wheel (36) forms an isosceles triangle, and the line connecting the centers of the first tensioning wheel (36) and the two first fixed wheels (35) forms the waist of the triangle.

5. A wire cutting machine tool for large workpieces according to any one of claims 1-4, characterized in that, The main support (1) includes two horizontal arms (13) arranged opposite each other. The cutting mechanism (2) also includes a wire storage component (21) arranged on the main support (1). The molybdenum wire (22) is arranged to pass around the two horizontal arms (13) and the wire storage component (21). The first tensioning mechanism (3) is arranged on the moving path of the molybdenum wire (22) between the wire storage component (21) and the lower horizontal arm. It also includes a second tensioning mechanism (4), which is located on the moving path of the molybdenum wire (22) between the wire storage component (21) and the upper cross arm; The second tensioning mechanism (4) includes a mounting bracket (41) on which two second fixed wheels (45) are provided with a gap between them. The second tensioning mechanism (4) further includes a second movable block (43) and a guide rod (42) connected thereto. The guide rod (42) slides through the mounting frame (41) and a second spring (44) is provided between the second movable block (43) and the mounting frame (41). The second movable block (43) is also provided with a second tensioning wheel (46), and the molybdenum wire (22) is arranged in an n-shape around the second tensioning wheel (46) and two second fixed wheels (45).

6. A wire cutting machine tool for large workpieces according to claim 5, characterized in that, The upper cross arm (13) is also provided with a negative electrode block (5); Two negative electrode blocks (5) are provided, and the molybdenum wire (22) is arranged in an S-shape around the two negative electrode blocks (5).

Images