Cutting device for hard and brittle materials

Abstract

The utility model provides a cutting device for hard and brittle materials, and belongs to the technical field of cutting equipment. The problem that an existing cutting device is poor in cutting quality is solved. The cutting device for the hard and brittle materials comprises a lifting support capable of moving up and down, a servo motor is connected to one side of the lifting support, a swing frame is rotationally connected into the lifting support, and the cutting device further comprises a bearing seat and a wire net which can be arranged in the swing frame in a penetrating mode in the front-back direction and is used for cutting workpieces. The bearing seat is arranged in the lifting support and the swing frame and can rotate relative to the lifting support, an outer ring of the bearing seat is fixedly connected with the swing frame, a motor shaft of the servo motor is connected with a driving shaft penetrating through the bearing seat in the axial direction of the motor shaft, and one end of the driving shaft penetrates out of the bearing seat and is located in the swing frame. The upper end of the swing frame is provided with a pair of clamping plates which can be close to or away from each other in the front-back direction of the swing frame. According to the cutting device for the hard and brittle materials, the cutting efficiency and cutting quality of the middle of the workpiece can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cutting equipment and relates to a cutting device for hard and brittle materials. Background Art

[0002] Hard and brittle materials refer to those with high hardness and high brittleness, such as silicon carbide, gallium nitride, sapphire, etc., which have the characteristics of high hardness and high brittleness. It is difficult and inefficient to cut large-sized workpieces. During the cutting process, they are prone to breakage when subjected to external forces. Therefore, when cutting, you can first use adhesive at both ends to rotate the workpiece to shorten the contact length during cutting and achieve the purpose of improving efficiency. When cutting to a small diameter of the workpiece core, if adhesive at both ends is still used, it is easy to cause the workpiece core to bend or even break, which will cause defects such as chip cracking and chipping.

[0003] Existing cutting devices, such as the Chinese patent application [application publication number: CN104552634A], discloses a new CNC diamond wire sapphire slicer, which includes a frame, a feeding mechanism is provided on the frame, a clamping fixture is provided on the feed mechanism, and a swing mechanism is provided on the frame. The position of the swing mechanism corresponds to the feeding mechanism. The swing mechanism is provided with two lead guide wheel structures. The diamond wire is wound on the two lead guide wheel structures in sequence multiple times while maintaining a spacing. The swing mechanism includes a swing frame, a first pulley is fixedly connected to the swing frame, and the lead guide wheel structures are respectively arranged on both sides of the swing frame. Support shafts are provided at both ends of the swing frame, and the support shafts are respectively connected to the frame. The rotation of the first pulley drives the swing frame to swing. The first pulley is connected to the second pulley through a belt, and the second pulley is connected to the driving device.

[0004] The above structure drives the wire guide wheel structure to swing through the swing mechanism, so that the diamond wire net swings along with the swing mechanism and cuts the workpiece at the same time. However, the diamond wire net will produce a large shake during the cutting process. Therefore, although this cutting method can complete the rapid cutting of the center of hard and brittle materials, the diamond wire net shakes during the cutting process. The shaking of the wire net will cut the workpiece multiple times at different angles, resulting in multiple different cutting scratches on the cutting part of the workpiece during the cutting process, affecting the cutting quality.

[0005] The above structure can complete the cutting of smaller workpieces, but when cutting larger workpieces, the wire mesh contact line is longer, resulting in low cutting efficiency or inability to cut. In the above structure, the adhesive material only adheres to a part of the cylindrical surface of the workpiece, resulting in a small and unstable adhesion area. When cutting larger workpieces, when cutting to the upper part of the workpiece in the attached figure of the specification of the above structure, the lower part of the workpiece is easily touched, which can easily cause quality problems such as breakage. Utility Model Content

[0006] The purpose of the present invention is to solve the above problems in the existing technology and to propose a cutting device for hard and brittle materials. The technical problem to be solved by the present invention is: how to solve the problem of poor cutting quality of the existing cutting device.

[0007] The purpose of this utility model can be achieved through the following technical solutions:

[0008] Base comprises support, castor, and frame upper is provided with guide rail, and support and conveyer frames movable end contact site are provided with recoil spring, and castor is arranged on the pin of base bottom four, to carry mobile handler location.

[0009] Working principle: When cutting workpieces made of hard and brittle materials, the workpiece is adhered to the end of the drive shaft by adhesive, and the motor shaft of the servo motor drives the drive shaft to rotate synchronously. The drive shaft drives the workpiece to rotate and move the lifting bracket downward. The wire mesh is driven by an external drive motor to keep rotating at all times, and the outside of the workpiece is cut by the rotating wire mesh. When the middle of the workpiece is cut, the lifting bracket stops moving downward, and the servo motor stops working at the same time. A pair of clamping plates in the swing frame move closer to each other in the front and back directions, and then the upper end of the workpiece is adhered to the clamping plate by adhesive, and the support plate is adjusted at the same time. The support plate lifts the lower end of the workpiece. At this time, the support plate just lifts the workpiece without exerting upward pressure on the workpiece, thereby realizing the positioning of the upper and lower ends of the workpiece. , start the swing assembly, the swing assembly drives the outer ring of the bearing seat to rotate relative to the lifting bracket. At this time, the outer ring of the bearing seat is fixedly connected to the swing frame, driving the swing frame to rotate, and the swing frame swings along the lifting bracket, and the lifting bracket continues to move downward. During cutting, the swing assembly drives the workpiece to swing and the lifting bracket drives the swinging swing frame to move downward synchronously, realizing the wire net cutting the swinging workpiece. The present application realizes the swinging by driving the movement of the workpiece by the swing assembly. The weight of the workpiece and the overall swing frame is large, and it is not easy to shake during the swinging process, and the wire net does not swing during the entire cutting process, thereby reducing the scratches on the middle part of the workpiece while reducing the cutting resistance of the wire net, thereby improving the cutting efficiency and cutting quality of the middle part of the workpiece.

[0010] Furthermore, by setting the clamping plate, the adhesion area of ​​the workpiece is increased and the adhesion quality of the workpiece is improved.

[0011] In the above-mentioned cutting device for hard and brittle materials, the clamping plates are all in the shape of long strips, and the length direction of the clamping plates is arranged along the axial direction of the driving shaft.

[0012] The length setting of the clamping plates enables a pair of clamping plates to stably adhere the workpiece along the axial direction of the drive shaft, thereby improving the positioning stability of the workpiece.

[0013] In the above-mentioned cutting device for hard and brittle materials, the lower end surfaces of the two clamping plates are arranged to be inclined downward from one side close to each other to the other side.

[0014] The setting of this structure maximizes the clamping effect of the clamping plate. By tilting the setting, the adhesion area between the clamping plate and the workpiece is increased, and the adhesion effect between the workpiece and the clamping plate is improved, thereby making the swing of the workpiece more stable.

[0015] In the above-mentioned cutting device for hard and brittle materials, the swing frame is rotatably connected to a forward and reverse threaded screw, and the clamping plates are connected to connecting blocks, which are threadedly connected to the forward and reverse threaded screws, and the rotation of the forward and reverse threaded screws drives the two clamping plates to move in opposite directions.

[0016] By setting the forward and reverse threaded screws, the two clamping plates can be adjusted synchronously by simply rotating the forward and reverse threaded screws during the adjustment process, so that the clamping plates can always move symmetrically in the front-to-back direction when moving relative to each other, thereby improving the positioning stability of the workpiece.

[0017] In the above-mentioned cutting device for hard and brittle materials, the lifting bracket is connected to a motor mounting seat, the swinging assembly includes a swinging motor mounted on the motor mounting seat, a cam plate is connected to the motor shaft of the swinging motor, a ring-shaped swinging ring groove is provided on the cam plate, a swinging arm is fixedly connected to the bearing seat, the swinging arm protrudes toward the direction of the cam plate to form a protrusion, and the protrusion is embedded in the swinging ring groove and slides relatively along the swinging ring groove.

[0018] The cam plate is driven to rotate by a swing motor. When the cam plate moves, the protrusion of the swing arm moves in the swing ring groove of the cam plate to realize the swing of the swing arm. The swing of the swing arm drives the outer ring of the bearing seat and the swing frame to swing synchronously. Through the setting of the swing ring groove, the swing arm can swing at a constant speed, avoiding the uneven swing speed of the existing connecting rod mechanism and the side clearance when the gear transmission mechanism rotates in the opposite direction, thereby improving the swing stability and cutting quality.

[0019] In the above-mentioned cutting device for hard and brittle materials, the other end of the swing frame is fixedly connected to a support bearing seat, and the support bearing seat is arranged on the lifting bracket. A spherical ejector pin capable of axially positioning the workpiece is rotatably connected in the support bearing seat, and the main material plate is connected to the drive shaft. The lifting bracket is also connected to a U-shaped adjustment plate, and an adjusting bolt is threaded on the adjustment plate. One end of the adjusting bolt passes through the adjustment plate and is fixedly connected to the spherical ejector pin, and the spherical ejector pin can press the workpiece onto the main material plate.

[0020] The design of the spherical ejector pin enables the workpiece to be axially positioned during rotary cutting by cooperating between the main plate and the spherical ejector pin, thereby making the rotation of the workpiece more stable and, in turn, making the cutting of the workpiece more stable during the installation process.

[0021] When the workpiece is installed, the axial position of the spherical ejector pin can be adjusted by rotating the adjusting bolt, so that the spherical ejector pin can not only position the workpiece but also avoid large extrusion of the workpiece, and can also achieve axial positioning of workpieces of different sizes.

[0022] In the above-mentioned cutting device for hard and brittle materials, the swing frame includes a base plate, the above-mentioned support plate is threadedly connected to the base plate, and a support bolt is threadedly connected to the base plate. One end of the support bolt is fixedly connected to the support plate and can drive the support plate to move up and down.

[0023] The position of the support plate can be adjusted by supporting bolts, and it can support workpieces of different sizes to facilitate the installation of the workpieces.

[0024] In the above-mentioned cutting device for hard and brittle materials, the upper surface of the support plate has two inclined support walls and a clearance wall located between the two support walls, and the support wall is inclined upward from one end close to the clearance wall to the other end.

[0025] The setting of this structure can not only support the workpiece, but also reduce the contact area with the workpiece, thereby improving the stability of the workpiece during the processing.

[0026] In the above-mentioned cutting device for hard and brittle materials, a guide rail is connected to the swing frame, and the ends of the clamping plates are connected to sliders slidably connected to the slide rails, and the guide rails are arranged parallel to the positive and negative threaded screws.

[0027] The setting of the guide rail and the slider improves the sliding accuracy of the clamping plate and ensures that the clamping plate can accurately position the workpiece.

[0028] Compared with the existing technology, the cutting device for hard and brittle materials has the following advantages: the swing is achieved by driving the workpiece to move through the swing component, the workpiece and the overall swing frame are heavy, and are not prone to shaking during the swing process, while the wire mesh does not swing during the entire cutting process, reducing the scratches on the middle part of the workpiece while reducing the cutting resistance of the wire mesh, thereby improving the cutting efficiency and cutting quality of the middle part of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural diagram of the present utility model.

[0030] Figure 2 This is one of the partial exploded sectional views of the present utility model.

[0031] Figure 3 It is a top view of the present utility model.

[0032] Figure 4 yes Figure 3 Cross-sectional view of AA in the figure.

[0033] Figure 5 It is a structural diagram of the swing component in the utility model.

[0034] Figure 6 This is the second partial exploded sectional view of the present invention.

[0035] In the figure, 1. lifting bracket; 11. motor mounting seat; 12. adjustment plate; 2. servo motor; 3. swing frame; 31. main material plate; 32. bearing seat; 33. clamping plate; 33a. connecting block; 33b. slider; 34. support plate; 34a. supporting wall; 34b. clearance wall; 35. positive and negative thread screw; 36. supporting bearing seat; 37. bottom plate; 37a. supporting bolt; 38. guide rail; 4. swing assembly; 41. swing motor; 42. cam plate; 43. swing ring groove; 44. swing arm; 44a. protrusion; 5. workpiece; 6. spherical ejector pin; 7. adjusting bolt; 8. wire mesh; 9. drive shaft. DETAILED DESCRIPTION

[0036] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0037] like Figure 1 As shown, the cutting device for hard and brittle materials includes a lifting bracket 1 that can move up and down, a servo motor 2 is connected to one side of the lifting bracket 1, and a swing bracket 3 is rotatably connected inside the lifting bracket 1.

[0038] Specifically, if Figure 1-6As shown, the cutting device also includes a bearing seat 32 and a wire net 8 that can be passed through the swing frame 3 along the front and rear directions and cut the workpiece 5. The bearing seat 32 is arranged in the lifting bracket 1 and the swing frame 3, and the bearing seat 32 can rotate relative to the lifting bracket 1. The outer ring of the bearing seat 32 is fixedly connected to the swing frame 3. The motor shaft of the servo motor 2 is connected to a driving shaft 9 that passes through the bearing seat 32 along its own axial direction. One end of the driving shaft 9 passes through the bearing seat 32 and is located in the swing frame 3, and the end can adhere and position the workpiece 5. The upper end of the swing frame 3 is provided with a pair of clamping plates 33 that can move closer to or away from each other along the front and rear directions of the swing frame 3. The clamping plates 33 move closer to each other and adhere the upper end of the workpiece 5 to the clamping plates 33 by adhesive. The lower end of the swing frame 3 is connected to a support plate 34 that can move up and down and position, and the support plate 34 supports the lower end of the workpiece 5. The lifting bracket 1 is connected to a swing component 4 that drives the outer ring of the bearing seat 32 to rotate relative to the lifting bracket 1.

[0039] Working principle: When cutting a workpiece 5 made of hard and brittle materials, the workpiece 5 is adhered to the end of the drive shaft 9 by adhesive, and the motor shaft of the servo motor 2 drives the drive shaft 9 to rotate synchronously. The drive shaft 9 drives the workpiece 5 to rotate on its own, and moves the lifting bracket 1 downward. The wire net 8 is driven by an external drive motor to keep rotating at all times, and the outside of the workpiece 5 is cut by the rotating wire net 8. When cutting to the middle of the workpiece 5, the lifting bracket 1 stops moving downward, and the servo motor 2 stops working at the same time. The pair of clamping plates 33 in the swing frame 3 move closer to each other in the front and back directions, and then the upper end of the workpiece 5 is adhered to the clamping plate 33 by adhesive, and the support plate 34 is adjusted at the same time. The support plate 34 lifts the lower end of the workpiece 5. At this time, the support plate 34 just lifts the workpiece 5 without exerting upward pressure on the workpiece 5, thereby achieving the upper and lower ends of the workpiece 5. After positioning, start the swing assembly 4, which drives the outer ring of the bearing seat 32 to rotate relative to the lifting bracket 1. At this time, the outer ring of the bearing seat 32 is fixedly connected to the swing frame 3, driving the swing frame 3 to rotate. The swing frame 3 swings along the lifting bracket 1, and the lifting bracket 1 continues to move downward. During cutting, the swing assembly 4 drives the workpiece 5 to swing and the lifting bracket 1 drives the swinging swing frame 3 to move downward synchronously, thereby realizing the wire net 8 cutting the swinging workpiece 5. The present application realizes the swinging by driving the movement of the workpiece 5 by the swing assembly 4. The weight of the workpiece 5 and the overall swing frame 3 is large, and it is not easy to shake during the swinging process. The wire net 8 does not swing during the entire cutting process, thereby reducing the scratches on the middle part of the workpiece 5 and the cutting resistance of the wire net 8, thereby improving the cutting efficiency and cutting quality of the middle part of the workpiece 5.

[0040] A ball bearing is provided in the lifting bracket 1 , and the ball bearing supports and positions the bearing seat 32 , so that the bearing seat 32 can rotate stably relative to the lifting bracket 1 .

[0041] like Figure 1 、 Figure 2 and Figure 6 As shown, the clamping plates 33 are all in the shape of long strips, and the length direction of the clamping plates 33 is arranged along the axial direction of the driving shaft 9. The lower end surfaces of the two clamping plates 33 are arranged to be inclined downward from one side close to each other to the other side.

[0042] like Figure 4 As shown, the swing frame 3 is rotatably connected to the forward and reverse threaded screws 35, and the clamping plates 33 are connected to connecting blocks 33a. The connecting blocks 33a are threadedly connected to the forward and reverse threaded screws 35, and the rotation of the forward and reverse threaded screws 35 drives the two clamping plates 33 to move in opposite directions. The swing frame 3 is connected to a guide rail 38, and the ends of the clamping plates 33 are connected to sliders 33b that are slidably connected to the guide rail 38. The guide rail 38 is arranged parallel to the forward and reverse threaded screws 35.

[0043] like Figure 5 and Figure 6 As shown, the lifting bracket 1 is connected to a motor mounting base 11. The swing assembly 4 includes a swing motor 41 mounted on the motor mounting base 11. A cam plate 42 is connected to the motor shaft of the swing motor 41. The cam plate 42 has an annular swing ring groove 43. A swing arm 44 is fixed to the bearing seat 32. The swing arm 44 protrudes toward the cam plate 42 to form a protrusion 44a. The protrusion 44a is embedded in the swing ring groove 43 and slides relatively along the swing ring groove 43. A rolling bearing is mounted on the protrusion 44a, which can slide relatively along the swing ring groove 43 to reduce friction during sliding.

[0044] like Figure 2 and Figure 6 As shown, the other end of the swing frame 3 is fixedly connected to a support bearing seat 36, which is installed on the lifting bracket 1. A spherical ejector pin 6 is rotatably connected to the support bearing seat 36, which can axially position the workpiece 5. The main material plate 31 is connected to the drive shaft 9. The lifting bracket 1 is also connected to a U-shaped adjustment plate 12, on which an adjustment bolt 7 is threadedly connected. One end of the adjustment bolt 7 passes through the adjustment plate 12 and is fixedly connected to the spherical ejector pin 6. The spherical ejector pin 6 can press the workpiece 5 against the main material plate 31. A support ball bearing is also provided in the lifting bracket 1. The support ball bearing supports and positions the support bearing seat 36, allowing the bearing seat 32 to rotate stably relative to the lifting bracket 1.

[0045] like Figure 4 As shown, the swing frame 3 includes a base plate 37, on which the above-mentioned support plate 34 is threadedly connected, and a support bolt 37a is threadedly connected to the base plate 37. One end of the support bolt 37a is fixedly connected to the support plate 34 and can drive the support plate 34 to move up and down. The upper surface of the support plate 34 has two inclined support walls 34a and a clearance wall 34b arranged between the two support walls 34a. The support wall 34a is inclined upward from one end close to the clearance wall 34b to the other end.

[0046] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A cutting device for hard and brittle materials, comprising a lifting bracket (1) that can move up and down, a servo motor (2) connected to one side of the lifting bracket (1), characterized in that: The lifting bracket (1) is rotatably connected to a swing bracket (3). The cutting device further comprises a bearing seat (32) and a wire mesh (8) which can be passed through the swing bracket (3) in the front-back direction and cut the workpiece (5). The bearing seat (32) is arranged in the lifting bracket (1) and the swing bracket (3). The bearing seat (32) can rotate relative to the lifting bracket (1). The outer ring of the bearing seat (32) is fixedly connected to the swing bracket (3). The motor shaft of the servo motor (2) is connected to the wire mesh (8) which is passed through the bearing seat (32) along its own axial direction. ), one end of the drive shaft (9) passes through the bearing seat (32) and is located in the swing frame (3), and the end can adhere and position the workpiece (5), the upper end of the swing frame (3) is provided with a pair of clamping plates (33) that can move closer to or away from each other along the front and rear directions of the swing frame (3), the lower end of the swing frame (3) is connected to a support plate (34) that can move up and down and position, and the lifting bracket (1) is connected to a swing component (4) that drives the outer ring of the bearing seat (32) to rotate relative to the lifting bracket (1).

2. The cutting device for hard and brittle materials according to claim 1, characterized in that: The clamping plates (33) are all in the shape of long strips, and the length direction of the clamping plates (33) is arranged along the axial direction of the driving shaft (9).

3. The cutting device for hard and brittle materials according to claim 1 or 2, characterized in that: The lower end surfaces of the two clamping plates (33) are arranged to be inclined downward from one side close to each other to the other side.

4. The cutting device for hard and brittle materials according to claim 1 or 2, characterized in that: The swing frame (3) is rotatably connected to a forward and reverse threaded screw (35), and the clamping plates (33) are both connected to a connecting block (33a). The connecting block (33a) is threadedly connected to the forward and reverse threaded screw (35), and the rotation of the forward and reverse threaded screw (35) drives the two clamping plates (33) to move in opposite directions.

5. The cutting device for hard and brittle materials according to claim 1 or 2, characterized in that: The lifting bracket (1) is connected to a motor mounting seat (11), the swing assembly (4) includes a swing motor (41) mounted on the motor mounting seat (11), a cam plate (42) is connected to the motor shaft of the swing motor (41), an annular swing ring groove (43) is provided on the cam plate (42), a swing arm (44) is fixedly connected to the bearing seat (32), the swing arm (44) protrudes toward the cam plate (42) to form a protrusion (44a), and the protrusion (44a) is embedded in the swing ring groove (43) and slides relatively along the swing ring groove (43).

6. The cutting device for hard and brittle materials according to claim 1 or 2, characterized in that: The other end of the swing frame (3) is fixedly connected to a support bearing seat (36), the support bearing seat (36) is arranged on the lifting bracket (1), and a spherical thimble (6) capable of axially positioning the workpiece (5) is rotatably connected in the support bearing seat (36), the main material plate (31) is connected to the driving shaft (9), and the lifting bracket (1) is also connected to a U-shaped adjustment plate (12), the adjustment plate (12) is threadedly connected to an adjustment bolt (7), one end of the adjustment bolt (7) passes through the adjustment plate (12) and is fixedly connected to the spherical thimble (6), and the spherical thimble (6) can press the workpiece (5) onto the main material plate (31).

7. The cutting device for hard and brittle materials according to claim 1 or 2, characterized in that: The swing frame (3) includes a bottom plate (37), the bottom plate (37) is threadedly connected to the supporting plate (34), and the bottom plate (37) is threadedly connected to a supporting bolt (37a), one end of the supporting bolt (37a) is fixedly connected to the supporting plate (34) and can drive the supporting plate (34) to move up and down.

8. The cutting device for hard and brittle materials according to claim 7, characterized in that: The upper surface of the support plate (34) has two inclined support walls (34a) and a clearance wall (34b) located between the two support walls (34a). The support wall (34a) is inclined upward from one end close to the clearance wall (34b) to the other end.

9. The cutting device for hard and brittle materials according to claim 4, characterized in that: The swing frame (3) is connected to a guide rail (38), and the ends of the clamping plates (33) are connected to sliders (33b) slidably connected to the guide rail (38). The guide rail (38) is arranged parallel to the positive and negative threaded screws (35).

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