An apparatus for beveling a diamond

Abstract

The application discloses a device for bevel polishing of a diamond, which comprises a base plate, a grinding wheel assembly, an indexing positioning assembly, a CCD assembly and a stroke detection assembly. The grinding wheel assembly comprises a cross guide rail module, a grinding wheel motor and a grinding wheel. The grinding wheel motor drives the grinding wheel to rotate and adjusts the grinding position through the cross guide rail module. The indexing positioning assembly comprises an indexing table, an angle positioning adjusting assembly and a stick holder shaft. The angle positioning adjusting assembly is used for adjusting the included angle between the stick holder shaft and the axis of the grinding wheel. The lens of the CCD assembly faces a machining area between the grinding wheel and the stick holder shaft. The stroke detection sensor faces the machining area and is used for cooperating with the detection of the feeding state of the grinding wheel. The device can complete the positioning, indexing, angle adjustment and grinding machining of the bevel of a diamond blank in the same device, reduces the transfer of multiple devices, and improves the stability and machining consistency of the polishing process.

Description

Technical Field

[0001] This invention relates to the field of diamond processing equipment technology, and specifically to a device for beveling diamonds. Background Technology

[0002] After laser cutting, diamond roughs typically require further polishing. This process generally includes trimming the laser-cut surface, removing localized heat-affected zones, and preliminary machining to achieve the angles needed for subsequent fine grinding. In current processing methods, diamond roughs often need to be transferred between different machines. For example, preliminary polishing may be completed on one machine before being transferred to another for angle trimming or subsequent pre-forming.

[0003] While this method can complete the processing, it also has some drawbacks. First, when multiple machines are used for processing, the workpiece needs to be repeatedly clamped and moved. Since diamond blanks are relatively small, moving and re-clamping can easily lead to positional deviations. Second, the reference points between different machines are not entirely consistent, and errors can easily occur between the angles formed in the previous process and the positioning angles in the next process. Third, there is a significant amount of manual intervention; operators need to repeatedly adjust the position of the stone-adhesive rod, grinding wheel, and grinding angle, resulting in lower processing efficiency and a certain reliance on operator experience.

[0004] While some existing diamond or rhinestone polishing equipment can perform single-angle polishing, automatic rotary polishing, or ordinary polishing, it typically still leans towards single-process operation. For laser-cut diamond blanks, if it is necessary to complete preliminary bevel polishing, indexing and positioning, angle adjustment, feed detection, and processing area observation within the same equipment, the existing equipment's structural fit is still not compact enough. In particular, there is a lack of direct coordination between the grinding wheel feed, the angle of the stone-adhesive rod, and the observation of the processing status.

[0005] Therefore, it is necessary to provide a device for diamond bevel grinding that allows grinding wheel grinding, workpiece indexing and positioning, angle adjustment, image observation and stroke detection to be used in the same device, reducing the transfer of workpieces between multiple devices and improving the stability of the diamond blank bevel grinding process. Summary of the Invention

[0006] The purpose of this invention is to provide a device for bevel polishing of diamonds, which improves the problems of multiple devices required for bevel polishing of diamond blanks, repeated transfer, unstable clamping and positioning, and inconvenient inspection of polishing feed.

[0007] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a device for diamond bevel grinding, comprising a base plate, a grinding wheel assembly and an indexing and positioning assembly disposed on the base plate, and a CCD assembly and a stroke detection assembly disposed above the base plate and corresponding to the processing area between the grinding wheel assembly and the indexing and positioning assembly; The grinding wheel assembly includes a cross guide rail module, a grinding wheel motor mounted on the cross guide rail module, and a grinding wheel connected to the output end of the grinding wheel motor; The indexing and positioning component is disposed opposite to the grinding wheel assembly. The indexing and positioning component includes an indexing table, an angle positioning adjustment component disposed on the indexing table, and a stone stick clamping shaft disposed on the angle positioning adjustment component. The angle positioning adjustment component is configured to adjust the angle between the stone stick clamping shaft and the axis of the grinding wheel. The CCD assembly includes a CCD camera and a lens connected to the CCD camera, the lens being positioned toward the processing area between the grinding wheel and the stone-sticking rod clamping shaft; The stroke detection component includes a stroke detection sensor, which is positioned facing the processing area.

[0008] Furthermore, it also includes a frame cover assembly disposed on the base plate. The frame cover assembly includes a main body of the cover disposed above the base plate and a side inspection door disposed on the side wall of the main body of the cover. A front operation window is provided on the front side of the main body of the cover, which corresponds to the processing area. A water receiving tray is disposed below the front operation window.

[0009] Furthermore, the frame housing assembly also includes a mounting bracket fixed to the base plate and located inside the housing body. The mounting bracket is a gate-shaped bracket, and the upper end of the mounting bracket forms a mounting reference portion for mounting the CCD component or the stroke detection component.

[0010] Furthermore, the cross rail module includes a first rail unit arranged along a first direction and a second rail unit arranged along a second direction, the first direction intersecting the second direction, the grinding wheel motor being mounted on the second rail unit, and the second rail unit being mounted on the first rail unit.

[0011] Furthermore, the outer grinding surface of the grinding wheel is positioned facing the end of the stone-sticking rod clamping shaft.

[0012] Furthermore, the indexing and positioning component also includes an indexing drive motor, which is connected to the indexing table in a transmission manner. The indexing table is a hollow rotating platform, and the indexing drive motor drives the indexing table to rotate around a vertical axis.

[0013] Furthermore, the angle positioning adjustment component includes a mounting base and an angle adjustment seat. The mounting base is disposed on the indexing table, the angle adjustment seat is disposed on the mounting base, the stone stick clamping shaft passes through the angle adjustment seat, and the position of the angle adjustment seat relative to the mounting base is adjustable.

[0014] Furthermore, the CCD assembly also includes a support column and a support arm connected to the support column, the CCD camera is mounted on the support arm, and the optical axis of the lens faces the edge region of the grinding wheel and the end region of the stone-sticking rod clamping shaft.

[0015] Furthermore, the stroke detection assembly also includes a detection mounting arm and a detection mounting base. One end of the detection mounting arm is connected to the outer cover body or the mounting bracket, and the detection mounting base is connected to the other end of the detection mounting arm. The stroke detection sensor is disposed on the detection mounting base and located in front of the grinding wheel.

[0016] Furthermore, it also includes a controller, wherein the CCD camera, the stroke detection sensor, the grinding wheel motor, and the indexing drive motor are electrically connected to the controller.

[0017] Compared with the prior art, the present invention has the following beneficial effects.

[0018] 1. By setting the grinding wheel assembly and indexing positioning assembly on the same base plate, the grinding wheel and the stone-holding rod clamping shaft are positioned within the same machining datum. Diamond blanks do not need to be repeatedly transferred between multiple machines, reducing positional deviations caused by repeated clamping and minimizing damage to the diamond blanks during transport.

[0019] 2. The grinding wheel motor and grinding wheel are supported by a cross-guide rail module, allowing the grinding wheel to be positioned relative to the processing area. The grinding wheel can move closer, retract, or feed slightly according to the position of the diamond blank, which helps improve the stability of the grinding feed.

[0020] 3. Through the cooperation of the indexing table, angle positioning adjustment component, and stone-adhesive rod clamping shaft, the stone-adhesive rod with the diamond blank attached can be clamped, indexed, and its angle adjusted. After one side of the diamond blank is processed, it can be switched to the next grinding position via the indexing table; when it is necessary to change the bevel angle, the angle between the stone-adhesive rod clamping shaft and the axis of the grinding wheel can be adjusted via the angle positioning adjustment component.

[0021] 4. By using a CCD camera and lens to observe the processing area between the grinding wheel and the stone-holding rod, the positional relationship between the grinding wheel and the diamond blank, as well as the grinding status, can be monitored. This facilitates the operator's observation of the processing process and allows for subsequent positional judgment or processing compensation based on the image information.

[0022] 5. By pointing the stroke detection sensor toward the machining area, the feed stroke of the grinding wheel or the relative positional change between the grinding wheel and the diamond blank can be detected. This detection result can be used to control the feed rate of the grinding wheel, reducing problems of excessive or insufficient feed.

[0023] 6. The outer casing, front operating window, and water tray protect the processing area and collect liquids and debris generated during processing. The side inspection doors and mounting brackets facilitate internal maintenance and the installation of inspection components.

[0024] 7. By electrically connecting the controller with the CCD camera, stroke detection sensor, grinding wheel motor and indexing drive motor, image observation, stroke detection, grinding wheel polishing and indexing action can be linked together, enabling the equipment to complete the bevel polishing process of diamond blanks more smoothly. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the device for diamond bevel polishing according to the present invention; Figure 2 This is a schematic diagram of the frame housing assembly in this invention; Figure 3 This is a schematic diagram of the frame housing assembly after the main body of the housing has been removed. Figure 4 This is a schematic diagram of the grinding wheel assembly in this invention; Figure 5 This is a schematic diagram of the indexing and positioning component in this invention; Figure 6 This is a schematic diagram of the CCD component in this invention; Figure 7 This is a schematic diagram of the stroke detection component in this invention.

[0026] In the diagram: 1. Frame housing assembly; 101. Housing body; 102. Side inspection door; 103. Front operation window; 104. Water tray; 105. Base plate; 106. Mounting bracket; 2. Grinding wheel assembly; 201. Grinding wheel motor; 202. Cross guide rail module; 203. Grinding wheel; 3. Indexing and positioning assembly; 301. Indexing drive motor; 302. Indexing table; 303. Angle positioning and adjustment assembly; 304. Stone stick clamping shaft; 4. CCD assembly; 401. Support column; 402. Support arm; 403. CCD camera; 404. Lens; 5. Stroke detection assembly; 501. Detection mounting arm; 502. Detection mounting base; 503. Stroke detection sensor. Detailed Implementation

[0027] The following is combined Figures 1 to 7The structure and usage of the present invention will be described below. The following content is used to illustrate one specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Without changing the mating relationships and working methods of the components, the dimensions, installation positions, driving methods, and control parameters of each component can be appropriately adjusted according to the specifications of the diamond rough.

[0028] This embodiment provides a device for bevel grinding of diamonds. The device mainly includes a frame housing assembly 1, a grinding wheel assembly 2, an indexing and positioning assembly 3, a CCD assembly 4, and a stroke detection assembly 5. The frame housing assembly 1 serves as the mounting base and protective structure for the entire machine. The grinding wheel assembly 2 provides the grinding action. The indexing and positioning assembly 3 clamps the stone-holding rod and drives the diamond blank to complete indexing and angular positioning. The CCD assembly 4 observes the processing area between the grinding wheel 203 and the diamond blank. The stroke detection assembly 5 detects the feed position of the grinding wheel 203 or the relative position between the grinding wheel 203 and the diamond blank. All components are arranged around the processing area between the grinding wheel 203 and the stone-holding rod clamping shaft 304, enabling the diamond blank to undergo bevel grinding within the same device.

[0029] like Figures 1 to 3 As shown, the frame housing assembly 1 includes a housing body 101, a side inspection door 102, a front operating window 103, a water receiving tray 104, a base plate 105, and a mounting bracket 106. The base plate 105 serves as the foundation mounting plate for the entire machine, and it has multiple mounting holes and positioning holes for fixing the grinding wheel assembly 2, the indexing and positioning assembly 3, and the mounting bracket 106. The base plate 105 can be made of steel plate or casting, and the mounting surface is machined to ensure a relatively stable relative position between the grinding wheel assembly 2 and the indexing and positioning assembly 3. This prevents the reference point for the grinding wheel 203 from shifting during feeding, and ensures that the diamond blank maintains a relatively stable grinding position after indexing.

[0030] The outer cover body 101 is mounted above the base plate 105. The outer cover body 101 can be formed by bending and welding sheet metal parts, or by combining a profile frame and sheet metal. The outer cover body 101 encloses the grinding wheel assembly 2, the indexing and positioning assembly 3, the CCD assembly 4, and the stroke detection assembly 5 within an internal or semi-enclosed space. During grinding, the grinding wheel 203 rotates at high speed, generating water mist, debris, and a small amount of grinding powder in the grinding area. The outer cover body 101 can block these flying particles, reducing their escape to the outside of the equipment. A side access door 102 is provided on the side of the outer cover body 101, which can be fixed to the outer cover body 101 by hinges, slide rails, or screws. When it is necessary to replace internal components, inspect wiring, or maintain sensors, the side access door 102 can be opened without disassembling the entire outer cover body 101.

[0031] A front operating window 103 is provided on the front side of the outer casing 101. The front operating window 103 corresponds to the processing area between the grinding wheel 203 and the stone-adhesive rod clamping shaft 304. The operator can insert the stone-adhesive rod with the diamond blank attached through the front operating window 103, and can also observe the initial position of the grinding wheel 203, the stone-adhesive rod clamping shaft 304, and the diamond blank. A water receiving tray 104 is provided below the front operating window 103. The water receiving tray 104 is located below or near the grinding area and is used to collect coolant, rinsing water, and debris flowing down during grinding. The water receiving tray 104 can be a detachable structure or fixedly connected to the outer casing 101 or the base plate 105. A drain hole can be provided at the bottom of the water receiving tray 104, and the drain hole is connected to a filter box or water collection tank through a hose. In this way, the liquid generated by the equipment during wet grinding will not flow directly to the outside of the base plate 105, and it is also convenient for subsequent cleaning.

[0032] Mounting bracket 106 is fixed to the base plate 105 and located inside the outer casing body 101. Mounting bracket 106 can be a portal frame, with its left and right side columns fixed to the base plate 105 and its upper crossbeam connecting the two side columns. The upper end of mounting bracket 106 forms a mounting reference section. CCD component 4, stroke detection component 5, or their supporting components can be mounted on mounting bracket 106. The direct fixation of mounting bracket 106 to the base plate 105 provides a more stable mounting position for the detection components. Compared to direct mounting on the outer casing thin plate, the mounting position of the detection components is less likely to change due to outer casing vibration. This helps maintain the stability of the image acquisition direction and stroke detection direction.

[0033] like Figure 4 As shown, the grinding wheel assembly 2 includes a grinding wheel motor 201, a cross guide rail module 202, and a grinding wheel 203. The cross guide rail module 202 is mounted on the base plate 105. The cross guide rail module 202 includes a first guide rail unit arranged along a first direction and a second guide rail unit arranged along a second direction, the first and second directions intersecting. The second guide rail unit is disposed on the first guide rail unit, and the grinding wheel motor 201 is mounted on the second guide rail unit. The first and second guide rail units can be formed by a combination of linear guide rails, ball screws, servo motors, stepper motors, or handwheel fine-tuning mechanisms. The grinding wheel motor 201 moves with the cross guide rail module 202, thereby driving the grinding wheel 203 to adjust its position in both directions.

[0034] The grinding wheel motor 201 drives the grinding wheel 203 to rotate. The grinding wheel motor 201 can be a high-speed spindle motor or a regular motor with a synchronous belt or coupling to drive the grinding wheel 203. The grinding wheel 203 is installed at the output end of the grinding wheel motor 201 and can be a diamond grinding wheel. When machining a diamond blank, the outer grinding surface of the grinding wheel 203 faces the end area of ​​the stone-holding shaft 304. After the grinding wheel 203 rotates at high speed, it gradually approaches the diamond blank through the cross guide module 202, so that the outer grinding surface of the grinding wheel 203 contacts the inclined surface of the diamond blank to be ground. Because the cross guide module 202 has two-way position adjustment capability, the grinding wheel 203 can approach the diamond blank in the feed direction or finely adjust its alignment in the lateral direction. Therefore, when changing to different specifications of diamond blanks, it is not necessary to change the entire machine structure; only the position of the grinding wheel 203 needs to be adjusted.

[0035] In one specific processing parameter, the power of the grinding wheel motor 201 can be 400W, and the rotational speed of the grinding wheel 203 can be set from 10,000 r / min to 15,000 r / min. For smaller diamond blanks, multiple grinding passes can be performed using smaller feed rates. When initially finishing the laser-cut surface, the single feed rate can be set from 0.003 mm to 0.008 mm. When performing angle grinding before fine grinding, the single feed rate can be set from 0.001 mm to 0.003 mm. The above parameters are only a usable range; in actual use, they can be adjusted according to the diamond blank size, the condition of the cut surface, the grinding wheel grit, and the cooling method.

[0036] like Figure 5 As shown, the indexing and positioning assembly 3 includes an indexing drive motor 301, an indexing table 302, an angle positioning adjustment assembly 303, and a stone-adhesive rod clamping shaft 304. The indexing and positioning assembly 3 is arranged opposite to the grinding wheel assembly 2. The indexing drive motor 301 is connected to the indexing table 302 for driving the indexing table 302 to rotate around its vertical axis. The indexing table 302 can be a hollow rotary platform or a rotary table with angle positioning function. The angle positioning adjustment assembly 303 is provided on the indexing table 302, and the stone-adhesive rod clamping shaft 304 is provided on the angle positioning adjustment assembly 303. When the indexing table 302 rotates, the angle positioning adjustment assembly 303 and the stone-adhesive rod clamping shaft 304 rotate together with it. In this way, the diamond blanks adhered to the ends of the stone-adhesive rods can be switched to different circumferential positions in sequence.

[0037] The indexing drive motor 301 can be a servo motor or a stepper motor. The indexing drive motor 301 can be connected to the indexing table 302 via a synchronous belt, gears, worm gears, or a reducer. After the controller issues an indexing command, the indexing drive motor 301 drives the indexing table 302 to rotate to a preset angle. The angle of the indexing table 302 can be set according to the number of facets to be processed on the diamond blank. For example, when multiple circumferential bevels need to be ground, the indexing angle can be set to several equal divisions, or it can be set to non-equal divisions based on the pre-forming angle of the crown or pavilion facet. Each rotation of the indexing table 302 switches the diamond blank at the end of the stone-holding shaft 304 to a different processing position. The grinding wheel 203 then grinds according to the preset feed rate. In this way, the equipment can complete the processing of multiple bevels sequentially.

[0038] The angle positioning adjustment assembly 303 is used to adjust the included angle between the stone-sticking rod clamping shaft 304 and the axis of the grinding wheel 203. The angle positioning adjustment assembly 303 may include a mounting base and an angle adjustment seat. The mounting base is disposed on the indexing table 302, and the angle adjustment seat is mounted on the mounting base. The stone-sticking rod clamping shaft 304 passes through or is fixed to the angle adjustment seat. The position of the angle adjustment seat relative to the mounting base is adjustable. Specifically, the angle adjustment seat can adjust the angle using an arc groove, locking screw, and dial, or it can be adjusted using a worm gear, lead screw slider, or servo swing mechanism. After adjustment, the angle adjustment seat is locked or held at the set angle by a drive mechanism. In this way, the axial angle of the stone-sticking rod clamping shaft 304 is determined.

[0039] The stone-adhesive rod clamping shaft 304 is used to clamp the stone-adhesive rod to which the diamond blank is adhered. The front end of the stone-adhesive rod clamping shaft 304 may be equipped with a clamping hole, an elastic sleeve, a locking nut, or a tightening structure. After the stone-adhesive rod is inserted into the stone-adhesive rod clamping shaft 304, it is fixed by the clamping structure. The end of the stone-adhesive rod is pre-adheded with the diamond blank. During processing, the diamond blank extends beyond the end of the stone-adhesive rod clamping shaft 304 and faces the outer grinding surface of the grinding wheel 203. The stone-adhesive rod clamping shaft 304 is mounted on the angle positioning adjustment assembly 303; therefore, when the angle positioning adjustment assembly 303 changes its angle, the axial angle of the stone-adhesive rod clamping shaft 304 also changes accordingly. In this way, different bevel grinding angles can be formed between the diamond blank and the grinding wheel 203.

[0040] Taking a batch of laser-cut diamond blanks with a diameter of 5mm to 10mm as an example, the operator first adheres the diamond blanks to the end of the stone-adhesive rod. After the adhesive cures, the stone-adhesive rod is inserted into the clamping end of the stone-adhesive rod clamping shaft 304 and locked. Subsequently, according to the processing requirements of this batch of diamond blanks, the corresponding processing parameters are selected in the control interface. Parameters may include grinding wheel speed, initial grinding wheel position, feed rate, single feed amount, indexing angle, tilt angle of the stone-adhesive rod clamping shaft 304, number of grinding passes, and detection threshold. After the parameters are selected, the equipment enters the preparation state.

[0041] In the preparation state, the controller first controls the cross guide rail module 202 to move the grinding wheel 203 to the initial position. A safe distance is maintained between the grinding wheel 203 and the diamond blank. Then, the controller controls the indexing drive motor 301 to rotate the indexing table 302 to the first processing position. The angle positioning adjustment component 303 adjusts the stone-adhesive rod clamping shaft 304 to the first set angle. If the angle positioning adjustment component 303 is a manual adjustment structure, the operator can adjust it to the set angle and lock it according to the scale or an external angle display device; if the angle positioning adjustment component 303 is an electric adjustment structure, the controller can control its operation according to preset parameters. After this step is completed, the first bevel to be polished on the diamond blank faces the grinding wheel 203.

[0042] like Figure 6 As shown, the CCD assembly 4 includes a support column 401, a support arm 402, a CCD camera 403, and a lens 404. The support column 401 is vertically oriented, and the support arm 402 is connected to the support column 401. The CCD camera 403 is mounted at or near the end of the support arm 402, and the lens 404 is connected below the CCD camera 403. The optical axis of the lens 404 faces the edge region of the grinding wheel 203 and the end region of the stone-holding shaft 304. Through the support column 401 and the support arm 402, the CCD camera 403 can be mounted above or diagonally above the processing area, allowing it to observe the relative position between the grinding wheel 203 and the diamond blank.

[0043] The CCD camera 403 can be an industrial camera, and the lens 404 can be a fixed-focus lens or an adjustable-focus lens. Before processing, the CCD camera 403 acquires images of the grinding wheel 203 and the diamond blank. The controller or an external display screen shows these images. The operator can use the images to confirm whether the diamond blank is within the grinding range of the grinding wheel 203, and also to confirm whether there is any misalignment between the grinding wheel 203 and the diamond blank. When the equipment enters automatic processing, the CCD camera 403 continuously or intermittently acquires images. The controller can determine whether the processing area is within the set range based on the edge of the grinding wheel, the outline of the diamond blank, or the position of the surface to be ground in the image. If the deviation is within the allowable range, the equipment continues grinding; if the deviation exceeds the set range, the controller can pause the feed or prompt the operator to handle the situation.

[0044] like Figure 7 As shown, the stroke detection assembly 5 includes a detection mounting arm 501, a detection mounting base 502, and a stroke detection sensor 503. One end of the detection mounting arm 501 can be connected to the outer cover body 101 or to the mounting bracket 106. The detection mounting base 502 is mounted on the other end of the detection mounting arm 501. The stroke detection sensor 503 is mounted on the detection mounting base 502 and is located to the side and front of the grinding wheel 203. The stroke detection sensor 503 is oriented towards the processing area and is used to detect changes in the position of the grinding wheel 203 during the feeding process, or to detect changes in the relative distance between the grinding wheel 203 and the diamond blank.

[0045] The stroke detection sensor 503 can be a displacement sensor, laser rangefinder, contact probe, or other sensor capable of detecting position changes. The sensor's detection accuracy can be selected based on the required machining precision. For pre-forming grinding of the beveled surface of a diamond blank, the detection resolution of the stroke detection sensor 503 can be set to the 0.001mm level. Before each feed of the grinding wheel 203, the stroke detection sensor 503 detects the initial position of the grinding wheel 203 or the machining area. After the grinding wheel 203 feeds, the stroke detection sensor 503 detects the position information after the feed. The controller calculates the actual feed amount based on the two detection values. If the actual feed amount is less than the set value, the controller can control the cross guide module 202 to continue micro-feeding; if the actual feed amount reaches the set value, the controller stops the current feed. This reduces over-grinding and under-grinding.

[0046] In this embodiment, the equipment also includes an electrical control module. The electrical control module can be installed on the rear side of the outer casing 101, below the base plate 105, or in a separate electrical control box. The electrical control module includes a controller, a touch screen, a servo driver, a spindle driver, a power module, an input / output module, an emergency stop switch, and limit switches. The controller can be a PLC or an industrial controller. The touch screen is used to display the equipment status and set processing parameters. The servo driver is used to drive the cross guide rail module 202 and the indexing drive motor 301. The spindle driver is used to control the rotational speed of the grinding wheel motor 201. The input / output module is used to receive signals from the stroke detection sensor 503, the CCD camera 403, the limit switches, and the emergency stop switch, and output control signals to each driver.

[0047] The electronic control module can store multiple sets of processing parameters. Each set of parameters corresponds to a diamond blank specification or a combination of processing angles. Parameters may include the rotational speed of the grinding wheel 203, the initial position of the grinding wheel 203, the moving speed of the first guide rail unit, the moving speed of the second guide rail unit, the single feed rate, the total feed rate, the indexing angle, the angle of the angle positioning adjustment component 303, the CCD image detection threshold, the stroke detection error range, and the coolant activation time. After the operator selects a parameter set on the touchscreen, the controller sends each parameter to the corresponding driver and detection module. This eliminates the need to manually input all parameters each time a diamond blank of the same specification is processed.

[0048] The electrical control module can also be equipped with a safety interlock. The side access door 102 of the outer casing 101 can be equipped with a magnetic door switch or a limit switch. When the side access door 102 is open, the controller will not start the grinding wheel motor 201, or will immediately stop the grinding wheel motor 201 and the cross guide rail module 202. A transparent protective plate or operating door can be installed at the front operating window 103; when the operating door is open, the equipment remains in standby mode. Limit switches can be installed at the ends of the movement range of the grinding wheel assembly 2 and the indexing and positioning assembly 3. When the cross guide rail module 202 moves to its limit position, the limit switch sends a signal to the controller, and the controller stops the movement in the corresponding direction. These settings reduce the risk of misoperation.

[0049] When the equipment begins grinding, the grinding wheel motor 201 starts first, driving the grinding wheel 203 to the set speed. The coolant system can be turned on simultaneously, allowing coolant to flow to the area where the grinding wheel 203 contacts the diamond blank. The drip tray 104 collects the flowing coolant and debris. Subsequently, the cross guide rail module 202 drives the grinding wheel 203 to gradually approach the diamond blank. The CCD camera 403 acquires images of the processing area, and the stroke detection sensor 503 detects the feed position of the grinding wheel 203. The controller compares the image information and stroke information with the set parameters. After the grinding wheel 203 reaches the set position, the equipment completes one grinding cycle according to the set feed amount.

[0050] After one grinding cycle, the cross guide rail module 202 drives the grinding wheel 203 to retract a certain distance. The controller controls the indexing drive motor 301 to rotate the indexing table 302 to the next processing angle. If the inclination angle of the next slope is different from the previous slope, the angle positioning adjustment component 303 adjusts the axis angle of the stone-adhesive rod clamping shaft 304. After adjustment, the grinding wheel 203 is fed again and grinding is performed. This process can be repeated multiple times according to a preset program until the multiple slopes that need to be processed on the diamond blank are completed. For cases where rough finishing is required before fine grinding of the angle, a larger single feed rate can be used to complete the cutting surface finishing first, and then a smaller single feed rate can be used to complete the angle surface finishing.

[0051] In one operating mode, the CCD camera 403 is primarily used for observation and auxiliary positioning. During equipment operation, the CCD camera 403 transmits images of the processing area to a touchscreen or display, allowing the operator to confirm the position of the grinding wheel 203 relative to the diamond blank. The stroke detection sensor 503 is mainly used to control the feed rate. The controller controls the feed action of the cross guide module 202 based on feedback from the stroke detection sensor 503. This method features a simple structure and is convenient for production use.

[0052] In another operating mode, the CCD camera 403 participates in automatic compensation. The controller pre-stores reference images of the edge position of the grinding wheel 203, the end position of the diamond blank, or the bevel to be polished. During polishing, the CCD camera 403 acquires the current image, and the controller compares the current image with the reference image to obtain the positional deviation of the diamond blank or the edge deviation of the polished surface. If the deviation occurs along the feed direction of the grinding wheel 203, the controller can control the cross guide module 202 to perform micro-compensation. If the deviation occurs along the indexing direction, the controller can control the indexing drive motor 301 to perform angle fine-tuning. The compensation amount can be set from 0.001mm to 0.005mm, or adjusted according to the detection accuracy and grinding wheel grit size. In this way, the equipment can maintain a relatively stable processing state even when there are small differences in the size of the diamond blank.

[0053] In this embodiment, the grinding wheel 203, the stone-holding rod 304, the CCD camera 403, and the stroke detection sensor 503 are arranged around the same processing area. The grinding wheel 203 is responsible for removing material. The stone-holding rod 304 is responsible for holding the diamond blank and determining its orientation. The CCD camera 403 is responsible for observing the processing area. The stroke detection sensor 503 is responsible for providing feed position feedback. The controller links these components together, ensuring a clear coordination between the movement of the grinding wheel 203, the indexing of the diamond blank, and the detection information. In this way, the equipment can complete the preliminary grinding of the bevel of the diamond blank after laser cutting and the angle grinding before fine grinding in a relatively coherent manner.

[0054] After processing, the cross guide rail module 202 drives the grinding wheel 203 back to its initial safe position. The grinding wheel motor 201 stops rotating. The indexing table 302 returns to its set pick-up and put-down position. The operator releases the stone-adhesive rod clamping shaft 304 through the front operating window 103 and removes the processed stone-adhesive rod and diamond blank. Coolant and debris in the water tray 104 can be drained through the drain hole or cleaned manually. When the grinding wheel 203 needs to be replaced, it can be replaced by opening the front operating window 103 or the side inspection door 102. When it is necessary to check the CCD component 4 or the stroke detection component 5, the side inspection door 102 can be opened to adjust the position of the support arm 402, lens 404, or detection mounting base 502.

[0055] The names and reference numerals of the components in this embodiment are only used to illustrate the structural relationships in conjunction with the accompanying drawings. The specific models of the grinding wheel motor 201, the cross guide rail module 202, the indexing drive motor 301, the CCD camera 403, the stroke detection sensor 503, and the controller can be selected according to the processing accuracy, equipment cost, and production cycle. Any device capable of achieving the bevel grinding of the diamond blank by the grinding wheel 203, the indexing and angle positioning of the stone-adhesive clamping shaft 304, the image observation of the processing area, and the detection of the feed stroke of the grinding wheel 203 can be used in this equipment.

Claims

1. A device for beveling diamonds, characterized in that, It includes a base plate (105), a grinding wheel assembly (2) and an indexing and positioning assembly (3) disposed on the base plate (105), and a CCD assembly (4) and a stroke detection assembly (5) disposed above the base plate (105) and corresponding to the machining area between the grinding wheel assembly (2) and the indexing and positioning assembly (3). The grinding wheel assembly (2) includes a cross rail module (202), a grinding wheel motor (201) disposed on the cross rail module (202), and a grinding wheel (203) connected to the output end of the grinding wheel motor (201). The indexing and positioning component (3) is disposed opposite to the grinding wheel assembly (2). The indexing and positioning component (3) includes an indexing table (302), an angle positioning adjustment component (303) disposed on the indexing table (302), and a stone stick clamping shaft (304) disposed on the angle positioning adjustment component (303). The angle positioning adjustment component (303) is configured to adjust the angle between the stone stick clamping shaft (304) and the axis of the grinding wheel (203). The CCD assembly (4) includes a CCD camera (403) and a lens (404) connected to the CCD camera (403), the lens (404) being disposed toward the processing area between the grinding wheel (203) and the stone stick clamping shaft (304); The stroke detection component (5) includes a stroke detection sensor (503) which is positioned toward the processing area.

2. The equipment for diamond beveling according to claim 1, characterized in that, It also includes a frame cover assembly (1) disposed on the base plate (105). The frame cover assembly (1) includes a cover body (101) covering the base plate (105) and a side inspection door (102) disposed on the side wall of the cover body (101). A front operation window (103) is provided on the front side of the cover body (101). The front operation window (103) corresponds to the processing area. A water receiving tray (104) is provided below the front operation window (103).

3. The device for diamond beveling according to claim 2, characterized in that, The frame housing assembly (1) further includes a mounting bracket (106) fixed on the base plate (105) and located inside the housing body (101). The mounting bracket (106) is a gate-shaped bracket, and the upper end of the mounting bracket (106) forms a mounting reference part for mounting the CCD component (4) or the stroke detection component (5).

4. The equipment for diamond beveling according to claim 1, characterized in that, The cross rail module (202) includes a first rail unit arranged along a first direction and a second rail unit arranged along a second direction, the first direction intersecting the second direction, the grinding wheel motor (201) being mounted on the second rail unit, and the second rail unit being mounted on the first rail unit.

5. The device for diamond beveling according to claim 1, characterized in that, The outer grinding surface of the grinding wheel (203) is positioned facing the end of the stone-sticking rod clamping shaft (304).

6. The apparatus for diamond beveling according to claim 1, characterized in that, The indexing and positioning component (3) further includes an indexing drive motor (301), which is connected to the indexing table (302) for transmission. The indexing table (302) is a hollow rotating platform, and the indexing drive motor (301) drives the indexing table (302) to rotate around the vertical axis.

7. The apparatus for diamond beveling according to claim 1, characterized in that, The angle positioning adjustment component (303) includes a mounting base and an angle adjustment seat. The mounting base is disposed on the indexing table (302), and the angle adjustment seat is disposed on the mounting base. The stone stick clamping shaft (304) passes through the angle adjustment seat, and the position of the angle adjustment seat relative to the mounting base is adjustable.

8. The apparatus for diamond beveling according to claim 1, characterized in that, The CCD assembly (4) further includes a support column (401) and a support arm (402) connected to the support column (401). The CCD camera (403) is mounted on the support arm (402), and the optical axis of the lens (404) faces the edge region of the grinding wheel (203) and the end region of the stone-sticking rod clamping shaft (304).

9. An apparatus for diamond beveling according to claim 2 or 3, characterized in that, The stroke detection assembly (5) further includes a detection mounting arm (501) and a detection mounting base (502). One end of the detection mounting arm (501) is connected to the outer cover body (101) or the mounting bracket (106), and the detection mounting base (502) is connected to the other end of the detection mounting arm (501). The stroke detection sensor (503) is disposed on the detection mounting base (502) and located in front of the grinding wheel (203).

10. The apparatus for diamond beveling according to claim 6, characterized in that, It also includes a controller, wherein the CCD camera (403), the stroke detection sensor (503), the grinding wheel motor (201) and the indexing drive motor (301) are electrically connected to the controller.

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