A multi-wire saw tool for yttrium lutetium silicate crystal

Abstract

The utility model discloses a kind of yttrium lutetium silicate crystal multi-wire cutting tool, including tool base, the top two sides outer walls of tool base are all welded with support block, and the middle part of two support blocks is rotatably installed with cylindrical branch pipe, the middle part outer wall of cylindrical branch pipe is welded with worm wheel, and the outer wall of cylindrical branch pipe is rotatably provided with support shell, the top outer wall of support shell is welded with rotary top disc, and the top of support shell is rotatably provided with first worm, the first worm and worm wheel are interlocked;The utility model places yttrium lutetium silicate crystal directly in circular positioning recess inside, and is cooperated between the arc clamping block with adjustable spacing, so that yttrium lutetium silicate crystal can be quickly and effectively limited and fixed and handled, and arc clamping block is contacted with yttrium lutetium silicate, also adopt first compression spring and carry out soft contact fine adjustment self-adapting clamping, avoid because adjusting screw extrusion degree too big, lead to yttrium lutetium silicate crystal appear clamping damage phenomenon.

Description

Technical Field

[0001] This utility model relates to the field of crystal processing equipment technology, and in particular to a multi-wire cutting fixture for yttrium silicate crystals. Background Technology

[0002] Lutetium yttrium silicate crystals play an irreplaceable role in medical imaging equipment such as positron emission tomography (PET) due to their excellent scintillation properties. However, during processing, lutetium yttrium silicate crystals exhibit significantly different mechanical properties (Young's modulus difference exceeding 15%) across their crystal orientations. This leads to non-uniform stress distribution at the initial contact of the cutting wire, often resulting in a short-distance bending phenomenon at the beginning of the cutting process when using wire cutting. This bending not only affects cutting accuracy but may also lead to crystal scrap, increasing production costs and wasting resources. Therefore, there is an urgent need for an adjustable cutting fixture to address the bending phenomenon that occurs during the cutting of lutetium yttrium silicate crystals. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a multi-wire cutting tool for yttrium silicate crystals.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A multi-wire cutting fixture for yttrium lutetium silicate crystals includes a fixture base. Support blocks are welded to the outer walls of both sides of the top of the fixture base. A cylindrical branch pipe is rotatably mounted in the middle of the two support blocks. A worm gear is welded to the outer wall of the middle portion of the cylindrical branch pipe, and a supporting shell is rotatably mounted on the outer wall of the cylindrical branch pipe. A rotating top plate is welded to the top outer wall of the supporting shell, and a first worm is rotatably mounted on the top of the supporting shell. The first worm meshes with the worm gear, and a first adjusting wheel is welded to one side of the outer wall of the first worm. The outer walls of both sides of the rotating top plate are welded with… The device is equipped with an installation block, and an adjusting screw is screwed into the middle of the installation block. The end of the adjusting screw is rotatably connected to a connecting plate via a bearing. A second limiting guide post is slidably inserted into the outer wall of the connecting plate. An arc-shaped clamping block is welded to the side of the second limiting guide post away from the connecting plate. A first compression spring is sleeved on the outer wall of the second limiting guide post. A rubber pad is adhered to the inner wall of the arc-shaped clamping block. A second worm is engaged at the bottom of the worm gear. A second adjusting wheel is welded to one side of the outer wall of the second worm. A positioning chuck is welded to the middle outer wall of the second adjusting wheel.

[0005] As a further improvement of this utility model: a circular positioning groove is opened at the center of the top of the rotating top plate, and an anti-slip rubber pad is adhered to the bottom inner wall of the circular positioning groove.

[0006] As a further embodiment of this utility model: the outer wall of the mounting block is provided with a first limiting hole, and two parallel first limiting guide posts are welded to one side of the outer wall of the connecting plate. The first limiting guide posts are slidably inserted into the inner wall of the first limiting hole.

[0007] As a further embodiment of this utility model: an arc-shaped limiting groove is opened on the outer wall of the two support blocks that are close to each other, and a limiting guide rod is welded to the bottom of the outer wall on both sides of the support shell, and the limiting guide rod is inserted into the inner wall of the arc-shaped limiting groove.

[0008] As a further embodiment of this utility model: the top of one side of the outer wall of the support block has equally spaced scale lines with the cylindrical branch pipe as the axis, and a pointer is welded to one side of the bottom of the rotating top plate. The rotating top plate rotates along the axis of the cylindrical branch pipe, and the rotation angle of the rotating top plate is 0°-150°.

[0009] As a further embodiment of this utility model: a fixing block is welded to the top of the tooling base on one side of the positioning chuck, and a connecting rod is slidably inserted into the fixing block. A positioning block is welded to the outer wall of the end of the connecting rod, and the size of the positioning block is adapted to the gear clearance size of the positioning chuck.

[0010] As a further embodiment of this utility model: a second compression spring is sleeved on the outer wall of the middle part of the connecting rod, and a locking rod is welded to the outer wall of the end of the connecting rod; an L-shaped positioning block is welded to the outer wall of the fixing block on the side near the locking rod.

[0011] As a further embodiment of this utility model: the worm wheel is located directly below the first worm, and the second worm is located directly below the worm wheel, and the worm wheel, the first worm, and the second worm are all located in the same vertical plane.

[0012] Compared with the prior art, this utility model provides a multi-wire cutting tool for yttrium lutetium silicate crystals, which has the following beneficial effects: This multi-wire cutting fixture for lutetium silicate crystals utilizes a circular positioning groove where the crystal is placed directly. This, combined with adjustable-spaced arc-shaped clamping blocks on both sides, allows for quick and effective positioning and fixation of the lutetium silicate crystal. Furthermore, the arc-shaped clamping blocks contact the crystal, and a first compression spring provides soft-contact fine-tuning and adaptive clamping, preventing damage to the crystal due to excessive pressure from the adjusting screw.

[0013] This multi-wire cutting fixture for lutetium silicate crystals utilizes the meshing of the first and second worm gears, along with the rotational adjustment of the worm wheel, to easily adjust the tilt angle of the rotating top plate during clamping and fixing of the lutetium silicate crystal. This allows for rapid changes in the cutting angle of the top lutetium silicate crystal. Furthermore, the dual worm gears driving the worm wheel for rotational adjustment can eliminate backlash through preload, achieving backlash-free drive and preventing wobbling caused by backlash after the worm gears and worm wheels are locked. The dual worm gears driving the worm wheel also improve the accuracy of the adjustable tilt angle.

[0014] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a multi-wire cutting fixture for yttrium silicate crystals proposed in this utility model. Figure 2 A side view of the overall structure of a multi-wire cutting fixture for yttrium silicate crystals proposed in this utility model; Figure 3 This is a first-view structural schematic diagram of a multi-wire cutting fixture for yttrium silicate crystals proposed in this utility model. Figure 4 The top view shows the overall structure of a multi-wire cutting fixture for yttrium silicate crystals proposed in this utility model.

[0016] In the diagram: 1. Tooling base; 2. Support block; 3. Columnar branch pipe; 4. Worm gear; 5. Support housing; 6. First worm; 7. First adjusting wheel; 8. Rotating top plate; 9. Circular positioning groove; 10. Mounting block; 11. Adjusting screw; 12. Connecting plate; 13. First limiting hole; 14. First limiting guide post; 15. Second limiting guide post; 16. First compression spring; 17. Arc-shaped clamping block; 18. Arc-shaped limiting groove; 19. Limiting guide rod; 20. Second worm; 21. Second adjusting wheel; 22. Positioning chuck; 23. Fixing block; 24. Connecting rod; 25. Positioning chuck; 26. Second compression spring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example

[0018] A multi-wire cutting fixture for yttrium lutetium silicate crystals, as described in this embodiment, Figure 1-4As shown, the fixture includes a tooling base 1. Support blocks 2 are welded to the outer walls of both sides of the top of the tooling base 1. A cylindrical branch pipe 3 is rotatably mounted in the middle of the two support blocks 2. A worm gear 4 is welded to the outer wall of the middle of the cylindrical branch pipe 3. A support shell 5 is rotatably mounted on the outer wall of the cylindrical branch pipe 3. A rotating top plate 8 is welded to the top outer wall of the support shell 5. A first worm 6 is rotatably mounted on the top of the support shell 5. The first worm 6 meshes with the worm gear 4. A first adjusting wheel 7 is welded to one side of the outer wall of the first worm 6. Mounting blocks 10 are welded to the outer walls of both sides of the rotating top plate 8. An adjusting screw 11 is screwed into the middle. The end of the adjusting screw 11 is rotatably connected to a connecting plate 12 via a bearing. A second limiting guide post 15 is slidably inserted into the outer wall of the connecting plate 12. An arc-shaped clamping block 17 is welded to the side of the second limiting guide post 15 away from the connecting plate 12. A first compression spring 16 is sleeved on the outer wall of the second limiting guide post 15. A rubber pad is adhered to the inner wall of the arc-shaped clamping block 17. A second worm 20 is meshed at the bottom of the worm gear 4. A second adjusting wheel 21 is welded to one side of the outer wall of the second worm 20. A positioning chuck 22 is welded to the middle outer wall of the second adjusting wheel 21. By placing the lutetium yttrium silicate crystal directly inside the circular positioning groove 9 and cooperating with the adjustable arc-shaped clamping blocks 17 on both sides, the lutetium yttrium silicate crystal can be quickly and effectively fixed. The arc-shaped clamping blocks 17 contact the lutetium yttrium silicate crystal, and a first compression spring 16 is used for soft contact fine-tuning adaptive clamping to avoid clamping damage to the lutetium yttrium silicate crystal due to excessive squeezing force of the adjusting screw 11.

[0019] The rotating top plate 8 has a circular positioning groove 9 at the center of its top, and the bottom inner wall of the circular positioning groove 9 is bonded with an anti-slip rubber pad. The outer wall of the mounting block 10 has a first limiting hole 13 through it, and two parallel first limiting guide posts 14 are welded to one side of the outer wall of the connecting plate 12. The first limiting guide posts 14 are slidably inserted into the inner wall of the first limiting hole 13. Both of the two support blocks 2 have arc-shaped limiting grooves 18 on their outer walls that are close to each other, and limiting guide rods 19 are welded to the bottom of the outer walls on both sides of the support shell 5. The limiting guide rods 19 are inserted into the inner wall of the arc-shaped limiting grooves 18.

[0020] The top of one side of the outer wall of the support block 2 has equally spaced scale lines with the cylindrical branch pipe 3 as the axis, and a pointer is welded to one side of the bottom of the rotating top plate 8. The rotating top plate 8 rotates along the axis of the cylindrical branch pipe 3, and the rotation angle of the rotating top plate 8 is 0° to 150°. When clamping and fixing lutetium silicate crystals for multi-wire cutting, the meshing of the first worm 6 and the second worm 20, combined with the rotation adjustment of the worm wheel 4, allows for convenient adjustment of the tilt angle of the rotating top plate 8. This enables a rapid change in the cutting angle of the top lutetium silicate crystal. Furthermore, the rotation adjustment of the worm wheel 4 driven by the dual worms can eliminate gaps through preload, achieving backlash-free drive. This avoids the shaking caused by gaps after the worm wheel 4 and worms are locked. Moreover, the dual worms driving the worm wheel 4 improve the accuracy of the adjustable tilt angle.

[0021] In this embodiment, the cutting fixture is first assembled. After assembly, the yttrium lutetium silicate crystal to be cut is placed directly inside the circular positioning groove 9. Then, the adjusting screws 11 on both sides are adjusted. The rotation of the adjusting screws 11 brings the two arc-shaped clamping blocks 17 closer together. After the arc-shaped clamping blocks 17 contact the outer walls of the two sides of the yttrium lutetium silicate crystal, the adjustment continues. At this time, the first compression spring 16 will achieve adaptive elastic clamping, which can avoid clamping damage to the yttrium lutetium silicate crystal due to excessive squeezing force. After the clamping is secure, the fixture is placed directly below the cutting line, and the bottom of the fixture base 1 is fixed with bolts. Then, the connecting rod 24 is pulled out to remove the positioning block 25 from the positioning wheel 22, and the connecting rod 24 is rotated to clamp onto the L-shaped positioning block on the side of the fixed block. Then, the second worm gear 20 is rotated to drive the worm wheel 4 to rotate. While rotating, the first worm 6 can be further rotated, and the worm wheel 4 can be adjusted using a dual worm drive. Backlash can be eliminated through preload, achieving backlash-free drive and preventing wobbling caused by backlash after the worm wheel 4 is locked. Furthermore, the dual worm drive improves the accuracy of the adjustable tilt angle. Even when the first worm 6 and the second worm 20 rotate at different speeds, their driving forces on the worm wheel 4 create a combined effect. As long as both the first worm 6 and the second worm 20 are rotating and the resulting driving force can overcome the resistance to the rotation of the worm wheel 4 (such as friction, load resistance, etc.), the worm wheel 4 will rotate, allowing adjustment of the tilt angle of the rotating top plate 8. When tilted to a suitable angle, ensuring the contact between the cutting line and the yttrium lutetium silicate crystal starts from the crystal edge, the positioning block 25 is released and engaged with the positioning roller 22. The second worm gear 20 is fixed in place. Then, the cutting equipment is started so that the cutting line cuts the yttrium lutetium silicate crystal. During the cutting process, the tooling angle can be adjusted as needed to ensure the smooth cutting. Example

[0022] A multi-wire cutting fixture for yttrium lutetium silicate crystals, such as... Figure 1-4As shown, this embodiment makes the following additions based on embodiment 1: A fixing block 23 is welded to the top of the tooling base 1 on one side of the positioning chuck 22, and a connecting rod 24 is slidably inserted into the fixing block 23. A positioning block 25 is welded to the outer wall of the end of the connecting rod 24, and the size of the positioning block 25 is adapted to the gear clearance size of the positioning chuck 22. A second compression spring 26 is sleeved on the outer wall of the middle part of the connecting rod 24, and a locking rod is welded to the outer wall of the end of the connecting rod 24. An L-shaped positioning block is welded to the outer wall of the fixing block 23 on the side near the locking rod. The worm wheel 4 is located directly below the first worm 6, and the second worm 20 is located directly below the worm wheel 4. The worm wheel 4, the first worm 6, and the second worm 20 are all located in the same vertical plane. The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-wire cutting fixture for yttrium lutetium silicate crystals, comprising a fixture base (1), characterized in that, Support blocks (2) are welded to the outer walls of both sides of the top of the tooling base (1), and a columnar branch pipe (3) is rotatably installed in the middle of the two support blocks (2). A worm gear (4) is welded to the outer wall of the middle of the columnar branch pipe (3), and a support shell (5) is rotatably installed on the outer wall of the columnar branch pipe (3). A rotating top plate (8) is welded to the top outer wall of the support shell (5), and a first worm (6) is rotatably installed on the top of the support shell (5). The first worm (6) meshes with the worm gear (4), and a first adjusting wheel (7) is welded to one side outer wall of the first worm (6). Mounting blocks (10) are welded to the outer walls of both sides of the rotating top plate (8), and the middle of the mounting blocks (10) is screwed together. There is an adjusting screw (11), and the end of the adjusting screw (11) is rotatably connected to a connecting plate (12) through a bearing. A second limiting guide post (15) is slidably inserted into the outer wall of the connecting plate (12). An arc-shaped clamping block (17) is welded to the side of the second limiting guide post (15) away from the connecting plate (12). A first compression spring (16) is sleeved on the outer wall of the second limiting guide post (15). A rubber pad is adhered to the inner wall of the arc-shaped clamping block (17). A second worm (20) is engaged at the bottom of the worm wheel (4). A second adjusting wheel (21) is welded to the outer wall of one side of the second worm (20). A positioning chuck (22) is welded to the outer wall of the middle part of the second adjusting wheel (21).

2. The multi-wire cutting fixture for yttrium lutetium silicate crystals according to claim 1, characterized in that, The rotating top plate (8) has a circular positioning groove (9) at the center of its top, and the bottom inner wall of the circular positioning groove (9) is bonded with an anti-slip rubber pad.

3. The multi-wire cutting fixture for yttrium lutetium silicate crystals according to claim 1, characterized in that, The outer wall of the mounting block (10) is provided with a first limiting hole (13), and two parallel first limiting guide posts (14) are welded to one side of the outer wall of the connecting plate (12). The first limiting guide posts (14) are slidably inserted into the inner wall of the first limiting hole (13).

4. The multi-wire cutting fixture for yttrium lutetium silicate crystals according to claim 1, characterized in that, Both of the two support blocks (2) have arc-shaped limiting grooves (18) on their outer walls that are close to each other, and the bottom of the outer walls on both sides of the support shell (5) are welded with limiting guide rods (19), which are inserted into the inner wall of the arc-shaped limiting grooves (18).

5. The multi-wire cutting fixture for yttrium lutetium silicate crystals according to claim 1, characterized in that, The top of one side of the support block (2) has scale lines distributed at equal intervals around the axis of the columnar branch pipe (3), and a pointer is welded to one side of the bottom of the rotating top plate (8). The rotating top plate (8) rotates along the axis of the columnar branch pipe (3), and the rotation angle of the rotating top plate (8) is 0° to 150°.

6. The multi-wire cutting fixture for yttrium lutetium silicate crystals according to claim 1, characterized in that, The tooling base (1) has a fixing block (23) welded to one side of the positioning chuck (22) at the top, and a connecting rod (24) is slidably inserted on the fixing block (23). A positioning block (25) is welded to the outer wall of the end of the connecting rod (24), and the size of the positioning block (25) is adapted to the gear clearance size of the positioning chuck (22).

7. The multi-wire cutting fixture for yttrium lutetium silicate crystals according to claim 6, characterized in that, The middle outer wall of the connecting rod (24) is fitted with a second compression spring (26), and the end outer wall of the connecting rod (24) is welded with a locking rod. The outer wall of the fixing block (23) near the locking rod is welded with an L-shaped positioning block.

8. The multi-wire cutting fixture for yttrium lutetium silicate crystals according to claim 1, characterized in that, The worm wheel (4) is located directly below the first worm (6), and the second worm (20) is located directly below the worm wheel (4). The worm wheel (4), the first worm (6), and the second worm (20) are all located in the same vertical plane.

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