A diamond cutting position calibration fixture

Abstract

This utility model belongs to the field of diamond laser cutting technology, and particularly relates to a diamond cutting position calibration fixture. A diamond cutting position calibration fixture includes a base plate, a support frame, and further includes an imaging component, a sliding module, a positioning component, and a positioning block. The imaging component includes a mounting frame and an industrial camera. The sliding module includes X-axis and Y-axis sliding modules. The positioning component includes a fixed plate fixedly connected to a sliding component of the Y-axis sliding module, a reference plate on the fixed plate, and multiple positioning posts at the upper end of the fixed plate. The positioning block has positioning holes. The inner end face of the reference plate is located on the outer side of the diamond to be cut. This utility model can automatically acquire the relative distance of the scribing lines of each diamond to be cut, thereby quickly determining the scribing positions of all diamonds to be cut during laser cutting, thus achieving automatic laser cutting of all diamonds to be cut.

Description

Technical Field

[0001] This utility model belongs to the field of diamond laser cutting technology, and in particular relates to a diamond cutting position calibration fixture. Background Technology

[0002] Both the manufacturing of synthetic diamonds and the finishing of rough diamonds require slicing natural diamonds. Laser cutting, with its advantages of high precision and speed, has gradually become the mainstream technology for diamond slicing. In synthetic diamond manufacturing, slicing typically involves manually marking the area to be sliced ​​on the natural diamond. The marked natural diamond is then attached to one end of an adhesive rod, and the other end of the adhesive rod is horizontally inserted into a positioning block. The positioning block is then fixed to a laser cutting fixture. The laser head then slices the natural diamond along the marked lines to expose its internal facets, facilitating the growth of the synthetic diamond on these facets during subsequent manufacturing. In the finishing of rough diamonds, the process is similar. The area to be removed from the rough diamond is manually marked, and the marked rough diamond is attached to one end of an adhesive rod. The other end of the adhesive rod is horizontally inserted into a positioning block, which is then fixed to a laser cutting fixture. The laser head then slices the rough diamond along the marked lines to remove black surface impurities resulting from the growth of the synthetic diamond.

[0003] Existing laser slicing equipment, such as the Chinese utility model patent with authorization announcement number CN221603557U, discloses a laser slicing device including a worktable, a display controller, and a support frame. A Z-axis linear module and a laser galvanometer module are mounted on the support frame. An X-axis linear module is mounted on the worktable, and a Y-axis linear module is fixedly connected to the moving part of the X-axis linear module. A clamping mechanism is mounted on the moving part of the Y-axis linear module, and a clamping mechanism is held in place by the clamping mechanism. The clamping mechanism and the clamping mechanism are detachable. The clamping mechanism includes a base plate, an arc-shaped slide fixedly connected to the base plate, and a mounting block fixedly connected to the sliding part of the arc-shaped slide. The mounting block has several clamping holes. This utility model allows for separate laser slicing and clamping operations on diamond substrates, and has the advantages of easy adjustment of the laser cutting angle, batch processing of diamond substrates, and high processing efficiency.

[0004] Since a large number of diamonds to be sliced ​​are clamped on the positioning block, they are typically inserted on both sides of the positioning block to achieve the processing of multiple diamonds at once. Therefore, in the above-mentioned patented technology, an X-axis linear module and a Y-axis linear module are set up to drive the positioning block to move along the X and Y axes respectively, thereby moving each diamond to be sliced ​​into the cutting range of the laser head. The Y-axis linear module drives the diamond to be sliced ​​to reciprocate along the Y axis, thereby achieving the slicing of the diamonds to be sliced.

[0005] In actual processing, since there are a large number of diamonds to be cut, usually at least 16 at a time, and the cutting area of ​​each diamond is different, that is, the location of the scribing is different, after the positioning block of the diamond to be cut is fixed on the laser cutting fixture, it is generally necessary to manually take pictures of the scribing position of each diamond by means of a camera installed on the laser head. Then, the X-axis linear module drives the diamond to be cut to move so that the laser position of the laser head coincides with the scribing position, and then the diamond to be cut is laser cut.

[0006] In the above process, the marking positions of all diamonds to be sliced ​​are usually located manually first to determine the relative position of each marking position. Then, the laser cutting equipment performs laser cutting along the marking positions in sequence. Alternatively, the marking position of a certain diamond to be sliced ​​is located manually first and then laser cutting is performed. Then, the marking position of the next diamond to be sliced ​​is located and laser cutting is performed, and so on.

[0007] In the aforementioned processing, locating the scribing positions on the diamonds to be sliced ​​is time-consuming, making it impossible to quickly locate the scribing positions on all diamonds to be sliced, thus reducing processing efficiency and failing to meet the needs of automated cutting of large batches of diamonds. Therefore, there is an urgent need to design a diamond cutting position calibration fixture that can identify the scribing positions of each diamond to be sliced ​​and obtain the distance values ​​between each scribing position in order to calibrate the cutting path of the laser cutting equipment. Utility Model Content

[0008] To address the technical problems existing in the prior art, this application provides a diamond cutting position calibration fixture, which can automatically obtain the relative distance of the scribing lines of each diamond to be sliced, so that the scribing positions of all diamonds to be sliced ​​can be quickly determined during laser cutting, thereby realizing automatic laser cutting of all diamonds to be sliced.

[0009] To achieve the above objectives, this utility model provides the following technical solution: A diamond cutting position calibration fixture includes a horizontally arranged base plate, a support frame fixedly connected to the base plate, and further includes: The camera assembly includes a mounting bracket mounted on the support frame and an industrial camera fixedly connected to the mounting bracket. Sliding module: including an X-axis sliding module fixedly connected to the upper surface of the base plate and a Y-axis sliding module fixedly connected to the sliding component of the X-axis sliding module; Positioning assembly: includes a fixing plate fixedly connected to the sliding component of the Y-axis sliding module, a reference plate fixedly connected to the fixing plate along its length direction, and a plurality of positioning posts vertically fixedly connected to the upper end face of the fixing plate; Positioning block: It has positioning holes that match the positioning post, and several mounting holes are horizontally opened on both sides of the positioning block. A fastening hole is opened above each mounting hole. An adhesive rod for bonding the diamond to be sliced ​​is inserted into a mounting hole, and a fastening bolt is threaded into the fastening hole and abuts against the adhesive rod. The inner end face of the reference plate is located on the outer side of the diamond to be sliced.

[0010] Preferably, a connecting plate is fixedly connected to the sliding component of the Y-axis sliding module, and a vertical plate is fixedly connected to the connecting plate. The fixing plate is horizontally fixedly connected to the upper end face of the vertical plate. A backlight is fixedly connected to the vertical plate, and a light-transmitting groove is formed on the fixing plate along its length direction. The light-transmitting groove is located below the diamond to be sliced.

[0011] Preferably, multiple light-transmitting slots are provided, each corresponding to a diamond to be sliced.

[0012] Preferably, the inner end face of the reference plate is located above each of the light-transmitting slots.

[0013] Preferably, a light-entering groove is provided on the lower end face of the fixing plate, and the light-entering groove is connected to each of the light-transmitting slots.

[0014] Preferably, a positioning groove is provided on the upper surface of the fixed plate, and a support block is fixedly connected in the positioning groove. Both ends of the reference plate are fixedly mounted on the corresponding support blocks.

[0015] Preferably, the reference plate has waist-shaped adjustment holes at both ends along a direction perpendicular to its length, and adjustment bolts are inserted into the adjustment holes and threaded into the support block to fix the reference plate to the support block.

[0016] Preferably, there are two backlights arranged opposite each other and positioned below the light-transmitting slot along the length of the fixed plate.

[0017] Preferably, a Z-axis sliding module is fixedly connected to the support frame, and the mounting frame is fixedly connected to the sliding component of the Z-axis sliding module.

[0018] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model uses a fixed plate, a reference plate, positioning posts, positioning blocks, and an industrial camera. The positioning posts can position the positioning blocks and the diamonds to be sliced ​​fixed on them. The industrial camera captures images of the reference plate and each diamond to be sliced, thereby identifying the distance between the inner end face of the reference plate and the scribed lines on each diamond to be sliced. The relative distance between each scribed line can be calculated, which can calibrate the path of existing laser cutting equipment when cutting along the scribed lines of each diamond to be sliced. During actual laser cutting, the obtained relative distance value is input into the laser cutting equipment to obtain the scribed line position of each diamond to be sliced, thereby automatically completing the laser cutting along the scribed line position of each diamond to be sliced.

[0019] 2. By setting a backlight and a light-transmitting groove, the industrial camera is illuminated to make the pictures clearer; by setting a Y-axis sliding module, each diamond to be sliced ​​can be moved along the Y-axis so that the industrial camera can take pictures of each diamond to be sliced ​​one by one; by setting an X-axis sliding module, the industrial camera can take pictures of the two rows of diamonds to be sliced ​​on the positioning block. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the sliding module, positioning component and positioning block of this utility model.

[0022] Figure 3 This is a three-dimensional structural diagram of the positioning component and positioning block of this utility model.

[0023] Figure 4 This is a top view of the positioning component and positioning block of this utility model.

[0024] Figure 5 This is a schematic diagram of the backlight structure of this utility model.

[0025] Figure 6 This is a schematic diagram of the installation structure of the positioning block and the diamond to be sliced ​​according to this utility model.

[0026] Figure 7 This is a schematic diagram of the positioning component of this utility model.

[0027] Figure 8 This is a schematic diagram of the fixed plate of this utility model from one perspective.

[0028] Figure 9 This is a structural schematic diagram of the fixing plate of this utility model from a second perspective.

[0029] Figure 10 This is a schematic diagram of the photographing component of this utility model.

[0030] Figure 11 This is a schematic diagram of the structure of an existing laser cutting machine when processing diamond slices.

[0031] In the diagram: 11. Base plate, 12. Support beam, 13. Crossbeam. 2. Imaging component; 21. Mounting bracket; 211. Connecting bracket; 212. Fixing bracket; 22. Industrial camera. 3. Sliding module; 31. X-axis sliding module; 32. Y-axis sliding module; 33. Z-axis sliding module. 4. Positioning components; 41. Connecting plate; 42. Vertical plate; 43. Fixing plate; 431. Light-transmitting slot; 432. Light-entry groove; 433. Positioning groove; 44. Base plate; 441. Adjustment hole; 45. Positioning post; 46. Backlight; 47. Support block. 5. Positioning block; 51. Positioning block body; 52. Connecting part; 53. Positioning hole; 54. Mounting hole; 55. Fastening hole; 56. Numerical identifier. 6. Adhesive rod; 7. Diamond to be sliced; 71. Marking; 8. Laser cutting equipment; 81. Cutting fixture. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0033] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example 1

[0034] See appendix Figure 1 , 2As shown, a diamond cutting position calibration fixture includes a horizontally arranged base plate 11 and a support frame fixedly connected to the base plate 11. The support frame includes two support beams 12 fixedly connected to the upper end face of the base plate 11 and a crossbeam 13 horizontally fixedly connected to the support beams 12. It also includes a photographing component 2 mounted on the support frame, a sliding module 3 mounted on the base plate 11, a positioning component 4 driven by the sliding module 3, and a positioning block 5 positioned on the positioning component 4 for fixing an adhesive rod 6. A diamond 7 to be cut has been adhered to the adhesive rod 6.

[0035] The sliding module 3 includes an X-direction sliding module 31 fixedly connected to the upper surface of the base plate 11 along the X-direction by bolts, and a Y-direction sliding module 32 fixedly connected to the sliding member of the X-direction sliding module 31 along the Y-direction by bolts. The positioning component 4 is fixedly installed on the sliding member of the Y-direction sliding module 32. Thus, the X-direction sliding module 31 and the Y-direction sliding module 32 can drive the positioning component 4 to move along the X and Y directions, respectively.

[0036] In order to enable the up-and-down movement of the imaging component 2 to focus on the diamond 7 to be sliced ​​on the positioning block 5, this embodiment also includes a Z-axis sliding module 33 arranged along the Z-axis. The Z-axis sliding module 33 is vertically fixed to the support beam 12 by bolts, and the imaging component 2 is fixedly connected to the sliding part of the Z-axis sliding module 33.

[0037] It should be noted that the X, Y, and Z directions are mutually perpendicular relative designations. In this embodiment, the X direction refers to the length of the base plate 11, the Y direction refers to the width of the base plate 11, that is, the X and Y directions are perpendicular to each other, and the Z direction is a vertical direction. Specific directions can also be referenced. Figure 1 The coordinates are marked. The X-axis sliding module 31, Y-axis sliding module 32 and Z-axis sliding module 33 are all existing technologies, which are lead screw transmission mechanisms driven by servo motors.

[0038] See Figure 10 As shown, the imaging component 2 includes a mounting bracket 21 mounted on the support frame 12 and an industrial camera 22 fixedly connected to the mounting bracket 21. Specifically, the mounting bracket 21 includes a connecting bracket 211 fixedly mounted on the sliding component of the Z-axis sliding module 33 by bolts, and a fixing bracket 212 fixedly connected to the connecting bracket 211 by bolts. The industrial camera 22 is fixedly embedded between the connecting bracket 211 and the fixing bracket 212.

[0039] See Figure 3 , 4As shown, the positioning component 4 includes a connecting plate 41 fixedly connected to a sliding member of the Y-direction sliding module 32, a vertical plate 42 vertically fixedly connected to the connecting plate 41 by bolts, and a fixing plate 43 horizontally fixedly connected to the upper end face of the vertical plate 42 by bolts. Two reference plates 44 are fixedly connected to the fixing plate 43 along its length direction by bolts. The reference plates 44 are elongated plate-shaped structures, and the two reference plates 44 are arranged parallel to each other with their inner end faces along the Y direction. A plurality of positioning posts 45 are vertically embedded in the upper end face of the fixing plate 43; in this embodiment, four positioning posts 45 are provided.

[0040] See Figure 6 As shown, the positioning block 5 has an existing structure, which includes a positioning block body 51 and connecting portions 52 extending outward from both sides of the lower part of the positioning block body 51. Positioning holes 53 that match the positioning posts 45 are provided on the connecting portions 52, meaning that the positioning holes 53 on the connecting portions 52 can be fitted onto the corresponding positioning posts 45, thereby completing the positioning of the positioning block 5. Several mounting holes 54 are horizontally provided on both sides of the positioning block body 51, and a fastening hole 55 is provided above each mounting hole 54, with each fastening hole 55 communicating with the corresponding mounting hole 54.

[0041] The adhesive rod 6, which is to be bonded to the diamond 7 to be sliced, is inserted into the mounting hole 54. The fastening bolt (not shown in the figure) is threaded into the fastening hole 55 and presses against the adhesive rod 6, thereby fixing the adhesive rod 6 in the mounting hole 54. The scribing line 71 on the diamond 7 to be sliced ​​is located at the top so that the industrial camera 22 can take pictures of it.

[0042] The working principle and process of this embodiment are as follows: Install each component according to the above instructions, vertically attach the diamond 7 to be sliced ​​to one end of the horizontally set adhesive rod 6, and fix the other end of the adhesive rod 6 into the mounting hole 54; in this embodiment, eight mounting holes 54 are horizontally opened on both sides of the positioning block body 51, so a total of 16 adhesive rods 6 can be installed; the connecting part 52 of the positioning block 5 is sleeved on the positioning post 45, thereby completing the positioning and fixing of the diamond 7 to be sliced ​​and the positioning block 5; The X-axis sliding module 31 is controlled by the existing controller to drive the positioning component 4 to move along the X-axis to align the diamond 7 to be sliced ​​on one side of the positioning block body 51 with the industrial camera 22. Then, the Y-axis sliding module 32 drives the positioning component 4 to move downward toward the industrial camera 22. The industrial camera 22 takes pictures of the diamond 7 to be sliced ​​on one side of the positioning block body 51 and the corresponding reference plate 44 in sequence. The inner end face of the reference plate 44 is located on the outer side of the diamond 7 to be sliced, that is, there is a horizontal gap between the inner end face of the reference plate 44 and the diamond 7 to be sliced. After taking a picture of the diamond 7 to be sliced ​​on one side of the positioning block body 51, the X-axis sliding module 31 drives the positioning component 4 to move along the X-axis so that the diamond 7 to be sliced ​​on the other side of the positioning block body 51 is aligned with the industrial camera 22. Then the Y-axis sliding module 32 drives the positioning component 4 to move in the opposite direction, and the industrial camera 22 takes pictures of the diamond 7 to be sliced ​​on the other side of the positioning block body 51 and the corresponding reference plate 44 in sequence. To facilitate data recording, such as Figure 4 As shown, a number 56 is provided near each fastening hole 55 on the upper end face of the positioning block body 51, that is, from 1 to 16. For example, the distance between the scribe line of the diamond 7 to be sliced ​​at scribe 1 and the inner end face of the reference plate 44 is a1, the distance between the scribe line of the diamond 7 to be sliced ​​at scribe 2 and the inner end face of the reference plate 44 is a2, and so on. The distance between the scribe line of the diamond 7 to be sliced ​​at scribe 16 and the inner end face of the reference plate 44 is a16. By calculating the vertical distances of a2-a1, a3-a1, a4-a1...a16-a1, the relative distances between the scribe lines of the diamond 7 to be sliced ​​at scribe 1-16 and the scribe line of the diamond 7 to be sliced ​​at scribe 1 are calculated. See Figure 11 As shown, the positioning block 5, with the diamond 7 to be sliced ​​already mounted at the aforementioned relative distance, is placed on the cutting fixture 81 of the existing laser cutting equipment 8. The cutting fixture 81 of the laser cutting equipment 8 also includes the X-axis sliding module 31, Y-axis sliding module 32, Z-axis sliding module 33 as described in this application, and positioning posts 45 corresponding to the positioning holes 53. The positioning holes 53 on the positioning block 5 are fitted onto the positioning posts 45 on the cutting fixture 81 to complete the positioning of the diamond 7 to be sliced; by controlling the X-axis sliding module of the cutting fixture 81... The X-axis sliding module 31 and the Y-axis sliding module 32 align the scribing line of the diamond 7 to be sliced ​​marked 1 with the laser line of the laser head 82. Then, the relative distance of the scribing lines of the remaining diamonds 7 to be sliced ​​marked 2-16 is input into the laser cutting device 8. When the laser head 82 cuts each diamond 7 to be sliced, the controller of the laser cutting device 8 will control the X-axis sliding module 31 to drive the positioning block 5 to move along the X-axis according to the input relative distance of the scribing lines, thereby completing the positioning of the scribing lines of each diamond 7 to be sliced, so as to realize the automatic slicing of each diamond 7 to be sliced.

[0043] It should be noted that identifying the distance between the scribing line of the diamond to be sliced ​​7 and the inner end face of the reference plate 44 based on the image of the scribing line and the reference plate 44 is an existing technology. It can be identified by the pixel method, that is, how many pixels are occupied between the scribing line of the diamond to be sliced ​​7 and the inner end face of the reference plate 44, and how much size each pixel corresponds to, so as to calculate the distance. Example 2

[0044] This embodiment is a further improvement on embodiment 1. By setting a backlight structure, the imaging quality of the industrial camera 22 is improved.

[0045] See appendix Figure 5 , 7 As shown, an existing backlight 46 is fixedly connected to the upright plate 42 by bolts. A light-transmitting groove 431 is formed along the length of the fixing plate 43, and the light-transmitting groove 431 is located below the diamond 7 to be sliced. Furthermore, two sets of backlights 46 and light-transmitting grooves 431 are correspondingly arranged. The backlights 46 are arranged below the light-transmitting grooves 431 along the length of the fixing plate 43 to illuminate the diamond 7 to be sliced ​​and the reference plate 44 on both sides of the positioning block body 51. The inner end face of the reference plate 44 is located above the light-transmitting grooves 431, thereby illuminating the inner end face of the reference plate 44.

[0046] See Figure 8 , 9 As shown, further, in order to avoid illuminating too many structures by a single long strip of light-transmitting groove 431, thereby affecting the quality of the industrial camera 22 taking pictures, in this embodiment, the light-transmitting groove 431 is set in a one-to-one correspondence with the diamond 7 to be sliced, that is, there are 16 light-transmitting grooves 431.

[0047] Furthermore, in order to increase the light transmittance of each light-transmitting slot 431, a light-entering groove 432 is provided on the lower end face of the fixing plate 43 along its length direction, and the light-entering groove 432 connects each light-transmitting slot 431.

[0048] The working principle and process of this embodiment are the same as those of Embodiment 1, the only difference being the specific structure. Example 3

[0049] This embodiment is a further improvement on embodiment 2, in order to facilitate the adjustment of the relative position of the reference plate 44.

[0050] In this embodiment, a set of positioning grooves 433 are provided on the upper end face of the fixing plates 43 on both sides of the connecting part 52. Each set of positioning grooves 433 has two grooves. The positioning grooves 433 penetrate the outer end face of the fixing plate 43. A support block 47 is fixedly connected to the positioning groove 433 by bolts. The two ends of the reference plate 44 are fixedly mounted on the corresponding support block 47 by bolts. By setting the support block 47, the distance between the inner end face of the support block 47 and the diamond 7 to be sliced ​​can be reduced, thereby improving the imaging quality.

[0051] Furthermore, waist-shaped adjustment holes 441 are provided at both ends of the reference plate 44 along a direction perpendicular to its length. Adjustment bolts (not shown in the figure) pass through the adjustment holes 441 and are threaded into the support block 47 to fix the reference plate 44 to the support block 47. With the above structure, the distance between the inner end face of the reference plate 44 and the diamond to be sliced ​​7 can be adjusted.

[0052] The working principle and process of this embodiment are the same as those of Embodiment 2, the only difference being the specific structure.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A diamond cutting position calibration fixture, comprising a horizontally arranged base plate and a support frame fixedly connected to the base plate, characterized in that: Also includes: The camera assembly includes a mounting bracket mounted on the support frame and an industrial camera fixedly connected to the mounting bracket. Sliding module: including an X-axis sliding module fixedly connected to the upper surface of the base plate and a Y-axis sliding module fixedly connected to the sliding component of the X-axis sliding module; Positioning assembly: includes a fixing plate fixedly connected to the sliding component of the Y-axis sliding module, a reference plate fixedly connected to the fixing plate along its length direction, and a plurality of positioning posts vertically fixedly connected to the upper end face of the fixing plate; Positioning block: It has positioning holes that match the positioning post, and several mounting holes are horizontally opened on both sides of the positioning block. A fastening hole is opened above each mounting hole. An adhesive rod for bonding the diamond to be sliced ​​is inserted into a mounting hole, and a fastening bolt is threaded into the fastening hole and abuts against the adhesive rod. The inner end face of the reference plate is located on the outer side of the diamond to be sliced.

2. The diamond cutting position calibration fixture according to claim 1, characterized in that: A connecting plate is fixedly connected to the sliding component of the Y-axis sliding module, and a vertical plate is fixedly connected to the connecting plate. The fixing plate is horizontally fixedly connected to the upper end face of the vertical plate. A backlight is fixedly connected to the vertical plate, and a light-transmitting groove is formed on the fixing plate along its length direction. The light-transmitting groove is located below the diamond to be sliced.

3. The diamond cutting position calibration fixture according to claim 2, characterized in that: The light-transmitting grooves are provided in multiple ways, each corresponding to a diamond to be sliced.

4. The diamond cutting position calibration fixture according to claim 3, characterized in that: The inner end face of the reference plate is located above each of the light-transmitting slots.

5. A diamond cutting position calibration fixture according to claim 3, characterized in that: A light-entry groove is provided on the lower end face of the fixed plate, and the light-entry groove is connected to each of the light-transmitting slots.

6. The diamond cutting position calibration fixture according to claim 1, characterized in that: A positioning groove is provided on the upper surface of the fixed plate, and a support block is fixedly connected in the positioning groove. Both ends of the reference plate are fixedly mounted on the corresponding support blocks.

7. A diamond cutting position calibration fixture according to claim 6, characterized in that: Waist-shaped adjustment holes are provided at both ends of the reference plate along a direction perpendicular to its length. Adjustment bolts are inserted into the adjustment holes and threaded into the support block to fix the reference plate to the support block.

8. A diamond cutting position calibration fixture according to claim 2, characterized in that: Two backlights are arranged opposite each other and are positioned below the light-transmitting slot along the length of the fixed plate.

9. A diamond cutting position calibration fixture according to claim 1, characterized in that: A Z-axis sliding module is fixedly connected to the support frame, and the mounting frame is fixedly connected to the sliding component of the Z-axis sliding module.

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