Single-wire cutting machine for silicon carbide processing slices

Abstract

The utility model belongs to the technical field of wire cutting machines, and particularly relates to a single wire cutting machine for silicon carbide processing and slicing, which comprises a rack, a worktable mounted on the rack, a plurality of wire wheels rotatably fixed on the rack, and a diamond wire wound on the plurality of wire wheels, a working area is arranged at the front end of the rack, a certain width interval is reserved between the multiple wire wheels in the working area, and a diamond wire transversely penetrates through the working area in the first direction; the workbench comprises a second direction displacement mechanism, a third direction displacement mechanism and a rotating mechanism rotating in the third direction, and a workpiece is installed on the rotating mechanism and arranged in the working area. The multiple wire wheels rotate at the fixed positions to drive the diamond wire winding wheel to move, the workbench controls the workpiece to move, the problem that the cutting precision is poor due to the fact that the multiple wire wheels move to cut the workpiece and shake is solved, and the cutting quality and efficiency are high.

Description

Technical Field

[0001] The utility model belongs to the technical field of wire cutting machines, and specifically relates to a single-wire cutting machine for slicing silicon carbide processing. Background Art

[0002] A wire cutting machine is a machine device used for cutting materials, which has the characteristics of high precision, high efficiency and flexibility, and is widely used in the manufacturing industry and processing industry. Wire cutting machines are divided into single-wire cutting machines and multi-wire cutting machines, which are used to cut metal and non-metal materials, such as steel, aluminum, silicon carbide, etc. It uses thin metal wires or lines controlled by a high-speed computer to perform cutting.

[0003] For non-metal single-wire cutting machines, the existing cutting machine structure usually fixes the workpiece. Multiple wire wheels of the cutting machine are wound with diamond wires. One end of the multiple wire wheels winds up the wire, and the other end pays out the wire. At the same time, the wire wheels of the cutting machine are controlled to move slowly, and the diamond wire is passed through the workpiece to achieve cutting. However, the existing cutting machine has the following problems: 1. Since the workpiece is in a stationary state, the multiple wire wheels drive the diamond wire to move back and forth or up and down to cut the workpiece. There is jitter during the movement of the multiple wire wheels and the diamond wire, resulting in low precision of the cut workpiece. It is also difficult to ensure the cutting precision of the workpiece by adjusting the equipment parameters. 2. The workpiece is in a stationary state during the cutting process. If the cutting quality is to be ensured, sufficient cutting time is required to complete the slow movement of the diamond wire, resulting in low cutting efficiency. 3. The wire wheels of the existing cutting machine are all arranged in the same plane, with poor control of the tension of the diamond wire, poor stability of the diamond wire during wire routing, vibration and instability during the cutting process. Arranging them in the same plane requires a large layout space, resulting in an incompact frame structure and a large floor space. 4. The cutting machine only has vertical movement cutting and does not have material feeding. It is necessary to manually adjust the cutting position of the workpiece, resulting in low work efficiency and uneven cutting thickness.

[0004] Therefore, a single-wire cutting machine capable of solving the above problems is needed. Summary of the Utility Model

[0005] Aiming at the defects of the existing technology, the utility model provides a single-wire cutting machine for slicing silicon carbide processing. Multiple wire wheels of the cutting machine drive the diamond wire to move around the wire wheels by rotating at fixed positions. The workbench of the cutting machine enables the workpiece to perform vertical movement, synchronous rotation and feeding during cutting, and move forward to feed after a cut is completed. The cut workpiece has high precision and high cutting efficiency.

[0006] The utility model provides a single-wire cutting machine for slicing silicon carbide, which comprises a frame, a workbench installed on the frame, a plurality of wire wheels rotatably fixed on the frame, and a diamond wire wound around the plurality of wire wheels; a working area is arranged at the front end of the frame, a certain width of interval is reserved among the plurality of wire wheels at the working area, and the diamond wire transversely passes through the working area along a first direction;

[0007] The workbench comprises a second-direction displacement mechanism, a third-direction displacement mechanism and a rotating mechanism rotating around the third direction; the second direction is perpendicular to the bottom surface of the frame and orthogonal to the first direction, and the third direction is perpendicular to the plane where the first direction and the second direction are located;

[0008] The second-direction displacement mechanism is arranged on the frame, the third-direction displacement mechanism is arranged on the second-direction displacement mechanism, the rotating mechanism is arranged on the third-direction displacement mechanism, and a workpiece is installed on the rotating mechanism.

[0009] Further, the plurality of wire wheels are symmetrically distributed on the front end face and two side faces of the frame, and the rotating directions of the plurality of wire wheels are set to rotate in three directions along the first direction, the second direction and the third direction.

[0010] Further, a first opening is arranged on the front end face of the frame, the third-direction displacement mechanism and the rotating mechanism are opposite to the first opening, the first opening is opposite to the working area, and the rotating mechanism is connected with the workpiece through the first opening.

[0011] Further, the plurality of wire wheels include 2 cutting wheels; 1 cutting wheel is installed on each side of the first opening on the front end face of the frame, and the space area between adjacent cutting wheels is the working area.

[0012] Further, the second-direction displacement mechanism comprises a front end cover, a rear end cover, a shaft rod, a second slide rail, a slider and a connecting block; the front end cover is installed inside the end face of the frame, 1 second slide rail is installed on each side of the rear end face of the front end cover, the shaft rod is located between the 2 second slide rails and is rotatably connected with the front end cover through a bearing, a connecting block is sleeved on the shaft rod, the rear end cover is slidably connected with the 2 second slide rails through the slider, and the connecting block is connected with the slider.

[0013] Furthermore, the second-direction displacement mechanism further includes a first motor, a driven pulley, a driving pulley, a transmission belt, and a motor bracket; a second opening is further provided on the end face of the frame, the motor bracket passes through the second opening and is arranged on the front end face of the front end cover, the first motor is installed on the top of the motor bracket and is connected to the driving pulley at the bottom of the motor bracket, the driven pulley is arranged at the bottom of the shaft rod, and the transmission belt is wound around the driving pulley and the driven pulley.

[0014] Furthermore, the third-direction displacement mechanism is installed on the top of the rear end cover.

[0015] Furthermore, the third-direction displacement mechanism uses a lead screw assembly to slidably connect to the rotating mechanism.

[0016] Furthermore, the rotating mechanism includes a workpiece fixing frame, a first mounting frame, and a second motor; the first mounting frame is slidably connected to the third-direction displacement mechanism, the output shaft of the second motor is arranged along the third direction, and the workpiece fixing frame is connected to the output shaft of the second motor.

[0017] Furthermore, the workpiece is installed on the workpiece fixing frame.

[0018] The beneficial effects of the present utility model are as follows:

[0019] First, multiple wire wheels of the cutting machine of the present utility model drive the movement of the diamond wire by rotating at fixed positions to perform cutting. The workbench drives the workpiece to move in the second direction (vertical), the third direction (front and back), and rotate around the third direction. When cutting the workpiece, it moves vertically and rotates synchronously for feeding, and after completing one cutting, it moves forward for feeding. Compared with the existing structure where the workpiece is static and multiple wire wheels move for cutting, the present utility model solves the problem of poor cutting accuracy caused by the jitter of multiple wire wheels and the diamond wire during the movement, reduces the cutting time, improves the cutting efficiency, and performs feeding once after completing one cutting. The entire cutting process of the workpiece is continuous, the cutting thickness is uniform, and the cutting quality is high.

[0020] Second, in the preferred implementation mode, multiple wire wheels of the present utility model are symmetrically distributed on the front end face and both side faces of the frame, and the rotation directions of multiple wire wheels are set to rotate in three directions: the first direction, the second direction, and the third direction. Compared with the existing cutting machine where the wire wheels are distributed in the same plane, the present utility model can evenly distribute the cutting force by symmetrically arranging the wire wheels on multiple planes, reduce the vibration and instability during the cutting process, thereby obtaining a more stable and accurate cutting result, and enhancing the stability of the cutting. Description of the Drawings

[0021] Figure 1 is a three-dimensional structure diagram of the single-wire cutting machine according to the embodiment of the present utility model;

[0022] Figure 2 is the front view of the single-wire cutting machine according to the embodiment of the present utility model;

[0023] Figure 3 is the partial exploded view of the workbench according to the embodiment of the present utility model;

[0024] Figure 4 is the three-dimensional structure diagram of the workbench according to the embodiment of the present utility model.

[0025] Among them, 1-frame; 2-wire pay-off wheel; 3-wire arranging wheel; 4-tensioning wheel; 5-turning wheel; 6-transition wheel; 7-cutting wheel; 8-diamond wire; 9-wire take-up wheel; 10-workbench; 100-first motor; 101-front end cover; 102-workpiece fixing bracket; 103-first mounting bracket; 104-second motor; 105-third motor; 106-first slide rail; 107-second mounting bracket; 108-rear end cover; 109-shaft rod; 110-second slide rail; 111-driven belt pulley; 112-driving belt pulley; 113-drive belt; A-workpiece. Detailed implementation manners

[0026] In order to enable those skilled in the art to better understand the technical solutions of the present application, the following will further describe the present application in detail with reference to the accompanying drawings and embodiments.

[0027] The orientation terms such as up, down, left, right, front and rear in the present application document are established based on the positional relationship shown in the accompanying drawings. If the accompanying drawings are different, the corresponding positional relationship may also change accordingly. Therefore, it should not be understood as a limitation of the protection scope.

[0028] In the present application, the terms "installation", "connection", "engagement", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection or a connection that can communicate with each other, a direct connection, an indirect connection through an intermediate medium, a connection inside two components, or an interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0029] Refer to the attached drawings of the specification Figure 1-2, this utility model describes a single-wire cutting machine for silicon carbide processing slices, which includes a frame 1, a workbench 10 installed on the frame 1, a plurality of wire wheels rotatably fixed on the frame 1, and a diamond wire 8 wound around the plurality of wire wheels. The front end of the frame 1 is provided with a working area, and a certain width of interval is reserved among the plurality of wire wheels at the working area, and the diamond wire 8 passes through the working area. The moving direction of the diamond wire 8 along the plurality of wire wheels across the working area is the first direction (Y direction), the direction perpendicular to the bottom surface of the frame 1 and orthogonal to the first direction is the second direction (Z direction), and the third direction (X direction) is perpendicular to the plane where the first direction and the second direction are located.

[0030] The workbench 10 includes a second-direction displacement mechanism, a third-direction displacement mechanism, and a rotating mechanism that rotates around the third direction. The second-direction displacement mechanism is arranged inside the front end of the frame 1, the top of the second-direction displacement mechanism is provided with the third-direction displacement mechanism, the top of the third-direction displacement mechanism is provided with the rotating mechanism, and a workpiece is installed on the rotating mechanism, and the workpiece is arranged in the working area. The second-direction displacement mechanism is used to drive the third-direction displacement mechanism, the rotating mechanism, and the workpiece as a whole to move along the second direction and enable the diamond wire 8 in the working area to pass through the workpiece for cutting, the third-direction displacement mechanism is used to drive the rotating mechanism and the workpiece to move along the third direction, and the rotating mechanism is used to drive the workpiece to rotate around the third direction in the working area.

[0031] The rotating mechanism drives the workpiece A to continuously rotate around the X axis while driving the workpiece A to move closer to the diamond wire 8 in the Z-axis direction for cutting feed, and drives the workpiece A to move in the X-axis direction for feeding for the next cutting feed after each cutting of the diamond wire 8 is completed.

[0032] Specifically, the frame 1 is a symmetric structure, the front end face of the frame 1 is provided with a first opening, the third-direction displacement mechanism and the rotating mechanism are opposite to the first opening, and the first opening is opposite to the working area at the front end of the frame 1. The workbench 10 is installed inside the front end face of the frame 1, and the rotating mechanism of the workbench 10 is connected to the workpiece A through the first opening, and the workpiece A is located outside the front end face of the frame 1.

[0033] A plurality of wire wheels are symmetrically distributed on the front end face and both side faces of the frame 1, and the rotation directions of the plurality of wire wheels are set to rotate in three directions along the first direction, the second direction, and the third direction.

[0034] Further, the multiple wire wheels include a wire pay-off wheel 2, a wire arranging wheel 3, a tensioning wheel 4, a turning wheel 5, a transition wheel 6, a cutting wheel 7, and a wire take-up wheel 9, among which there are two wire arranging wheels 3, two tensioning wheels 4, two turning wheels 5, two transition wheels 6, and two cutting wheels 7 respectively. The wire pay-off wheel 2 and the wire take-up wheel 9 are respectively installed on the side surfaces of the frame 1. On one side surface of the frame 1, above the wire pay-off wheel 2, there are installed one wire arranging wheel 3, one tensioning wheel 4, and one turning wheel 5. On the front end surface of the frame 1, on both sides of the first opening of the workbench 10, there are installed one cutting wheel 7 each. Transversely and at intervals on one side of each cutting wheel 7, there is installed one transition wheel 6. The wire wheel layout above the wire take-up wheel 9 on the other side surface of the frame 1 is the same as the wire wheel layout above the wire pay-off wheel 2.

[0035] The wire pay-off wheel 2, the wire arranging wheel 3, and the wire take-up wheel 9 are driven by their respective motors. The tensioning wheel 4 includes a driving motor and a tensioning arm. The driving motor of the tensioning wheel 4 is used to adjust the tensioning arm of the tensioning wheel 4 based on a force measuring sensor to ensure that the tension of the tensioning wheel 4 is constant and stable. The turning wheel 5, the transition wheel 6, and the cutting wheel 7 are driven by the movement of the diamond wire 8 to rotate their respective wire wheels on their respective rotating shafts. The wire pay-off wheel 2, the transition wheel 6, the cutting wheel 7, and the wire take-up wheel 9 rotate along the X-axis direction. The wire arranging wheel 3 and the tensioning wheel 4 rotate along the Y-axis direction. The turning wheel 5 rotates along the Z-axis direction. The diamond wire 8 is evenly wound around the multiple wire wheels. The diamond wire 8 is released from the wire pay-off wheel 2 on one side of the frame 1, and successively passes through the wire pay-off wheel 2, the wire arranging wheel 3, the tensioning wheel 4, the turning wheel 5, then passes through the transition wheel 6, two spaced cutting wheels 7, and the transition wheel 6 on the front end surface of the frame 1, and then passes through the turning wheel 5, the tensioning wheel 4, and the wire arranging wheel 3 on the other side of the frame 1, and finally is wound back onto the wire take-up wheel 9. The diamond wire 8 is wound around the bottoms of the two cutting wheels 7. The distance between the two cutting wheels 7 is used to accommodate the workpiece A.

[0036] Refer to the attached Figure 3-4 description. The Z-axis displacement mechanism of the workbench 10 includes a first motor 100, a front end cover 101, a rear end cover 108, a shaft rod 109, a second slide rail 110, a driven belt pulley 111, a driving belt pulley 112, a transmission belt 113, and a motor bracket.

[0037] The front end cover 101 is installed inside the inner side of the end face of the frame 1. The front end face of the frame 1 is also provided with a second opening. The motor bracket passes through the second opening and is installed on the front end face of the front end cover 101. The first motor 100 is installed on the top of the motor bracket. The motor bracket has a central hole. The output shaft of the first motor 100 passes downward through the central hole of the motor bracket and is connected to the driving pulley 112. One second slide rail 110 is installed on each side of the rear end face of the front end cover 101. Two bearing seats with bearings are arranged at intervals in the vertical direction between the two second slide rails 110. Bearings of the two bearing seats are sleeved on the shaft rod 109. The driven pulley 111 is installed at the bottom of the shaft rod 109. The transmission belt 113 is wound around the driving pulley 112 and the driven pulley 111. A trapezoidal thread is provided on the shaft rod 109. A connecting block with trapezoidal teeth is sleeved on the shaft rod 109. Both ends of the connecting block are connected to the sliders. The rear end cover 108 is buckled with the front end cover 101 through the two second slide rails 110. The X-axis displacement mechanism of the workbench 10 is installed on the top of the rear end cover 108.

[0038] The driving pulley 112 is driven to rotate by the first motor 100. The driving pulley 112 drives the driven pulley 111 to rotate through the transmission belt 113, so that the shaft rod 109 rotates on the two bearing seats. The connecting block on the shaft rod 109 drives the slider and the rear end cover 108 connected to the slider to move along the Z-axis direction on the second slide rail 110.

[0039] The X-axis displacement mechanism of the workbench 10 adopts a lead screw assembly transmission, including a second mounting bracket 107 installed on the top of the rear end cover 108, first slide rails 106 installed on both sides of the top of the second mounting bracket 107, a lead screw located between the first slide rails 106, bearings installed at both ends of the lead screw, a connecting block with trapezoidal teeth installed on the lead screw, and a third motor 105 for driving the lead screw to rotate. The connecting block is connected to the first slide rails 106. The first slide rails 106 are slidably connected to the rotation mechanism of the workbench 10 through sliders.

[0040] The lead screw is driven to rotate by the third motor 105. The connecting block drives the rotation mechanism of the workbench 10 to move along the X-axis direction on the first slide rails 106.

[0041] The rotation mechanism of the workbench 10 includes a workpiece fixing frame 102, a first mounting bracket 103 and a second motor 104. The bottom of the first mounting bracket 103 is connected to the sliders on the two first slide rails 106. An opening is provided along the X-axis direction on the first mounting bracket 103. The second motor 104 is installed inside the opening. The workpiece fixing frame 102 is installed outside the opening. The output shaft of the second motor 104 is connected to the workpiece fixing frame 102. A workpiece A is installed on the workpiece fixing frame 102. The workpiece A in this embodiment is an 8-inch silicon carbide workpiece. The workpiece fixing frame 102 is driven to rotate by the second motor 104, thereby driving the workpiece A to rotate.

[0042] Multiple feet for adjusting the levelness of the whole machine are installed on the bottom surface of the frame 1.

[0043] The working principle of the single-wire cutting machine of the present utility model:

[0044] First, the workpiece is firmly fixed on the workpiece fixing frame 102. After starting the cutting machine, multiple wire wheels rotate at fixed positions and drive the diamond wire 8 to move from the wire pay-off wheel 2 towards the wire take-up wheel 9. The X-axis displacement mechanism of the workbench 10 controls the workpiece to move in the X direction to a suitable cutting position. The rotation mechanism and the Z-axis displacement mechanism of the workbench 10 work synchronously, driving the workpiece to rotate and feed towards the diamond wire 8 between the two cutting wheels 7 for cutting. After one cutting is completed, the X-axis displacement mechanism of the workbench 10 controls the workpiece to move outwards, and the rotation mechanism and the Z-axis displacement mechanism of the workbench 10 perform the next cutting feed. The work is repeated until the workpiece cutting is completed.

[0045] The above are only the embodiments of the present utility model. Common knowledge such as the specific structures and characteristics known in the solutions is not described in detail herein. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A single-wire cutting machine for processing silicon carbide slices, characterized in that, It includes a frame (1), a workbench (10) installed on the frame (1), a plurality of wire reels rotatably fixed on the frame (1), and a diamond wire (8) wound around the plurality of wire reels; a working area is provided at the front end of the frame (1), the plurality of wire reels are spaced apart by a certain width at the working area, and the diamond wire (8) crosses the working area in a first direction. The workbench (10) includes a second-direction displacement mechanism, a third-direction displacement mechanism, and a rotating mechanism that rotates around the third direction. The second direction is perpendicular to the bottom surface of the frame (1) and orthogonal to the first direction, and the third direction is perpendicular to the plane where the first direction and the second direction are located. The second-direction displacement mechanism is provided on the frame (1), the third-direction displacement mechanism is provided on the second-direction displacement mechanism, the rotating mechanism is provided on the third-direction displacement mechanism, and a workpiece is installed on the rotating mechanism.

2. The single-wire cutting machine for processing silicon carbide slices according to claim 1, wherein, The plurality of wire reels are symmetrically distributed on the front end face and both side faces of the frame (1), and the rotation directions of the plurality of wire reels are set to rotate in three directions: the first direction, the second direction, and the third direction.

3. The single-wire cutting machine for silicon carbide processing slices according to claim 2, wherein, A first opening is provided on the front end face of the frame (1), the third-direction displacement mechanism and the rotating mechanism face the first opening, the first opening faces the working area, and the rotating mechanism is connected to the workpiece through the first opening.

4. The single-wire cutting machine for silicon carbide processing slices according to claim 3, characterized in that, The plurality of wire reels include 2 cutting wheels (7); on the front end face of the frame (1), one of the cutting wheels (7) is installed on each side of the first opening, and the space area between adjacent cutting wheels (7) is the working area.

5. The single-wire cutting machine for silicon carbide processing slices according to claim 1, wherein, The second-direction displacement mechanism includes a front end cover (101), a rear end cover (108), a shaft rod (109), a second slide rail (110), a slider, and a connecting block; the front end cover (101) is installed inside the end face of the frame (1), one of the second slide rails (110) is installed on each side of the rear end face of the front end cover (101), the shaft rod (109) is located between the 2 second slide rails (110) and is rotatably connected to the front end cover (101) through a bearing, a connecting block is sleeved on the shaft rod (109), the rear end cover (108) is slidably connected to the 2 second slide rails (110) through the slider, and the connecting block is connected to the slider.

6. The single-wire cutting machine for silicon carbide processing slices according to claim 5, characterized in that, The second-direction displacement mechanism further includes a first motor (100), a driven pulley (111), a driving pulley (112), a transmission belt (113), and a motor bracket; a second opening is further provided on the end face of the frame (1), the motor bracket passes through the second opening and is provided on the front end face of the front end cover (101), the first motor (100) is installed on the top of the motor bracket and is connected to the driving pulley (112) at the bottom of the motor bracket, the driven pulley (111) is provided at the bottom of the shaft rod (109), and the transmission belt (113) is wound around the driving pulley (112) and the driven pulley (111).

7. The single-wire cutting machine for silicon carbide processing slices according to claim 5, wherein, The third-direction displacement mechanism is installed on the top of the rear end cover (108).

8. The single-wire cutting machine for processing silicon carbide slices according to claim 1, wherein, The third-direction displacement mechanism is slidably connected to the rotation mechanism by a lead screw assembly.

9. The single-wire cutting machine for silicon carbide processing slices according to claim 8, wherein, The rotation mechanism includes a workpiece fixing frame (102), a first mounting frame (103), and a second motor (104); the first mounting frame (103) is slidably connected to the third-direction displacement mechanism, the output shaft of the second motor (104) is arranged along the third direction, and the workpiece fixing frame (102) is connected to the output shaft of the second motor (104).

10. The single-wire cutting machine for processing silicon carbide slices according to claim 9, wherein, The workpiece is mounted on the workpiece fixing frame (102).

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