Diamond polishing mechanism

Abstract

The utility model relates to the technical field of diamond machining, and discloses a diamond polishing mechanism which comprises a driving motor, a polishing wheel, a clamp and a transverse moving driving structure. A cavity extending in the axial direction is formed in a motor rotating shaft of the driving motor, a first piston is arranged in the cavity, and the front end of the first piston is connected with a piston rod; the piston rod extends out of the cavity, the polishing wheel is arranged on the piston rod in a sleeved mode, a first spring arranged on the periphery of the piston rod in a sleeved mode is arranged in the cavity, and a pressure sensing assembly is arranged at the tail end of a rotating shaft of the motor. According to the diamond polishing mechanism, real-time pressure information of the polishing wheel is fed back through the pressure sensing assembly, the transverse movement driving structure is automatically controlled to adjust the transverse position of the polishing wheel, the position of the diamond on the clamp is automatically adjusted, and the polishing position and the polishing force of each facet of the diamond are quickly found; and it is guaranteed that each facet can be polished under stable and appropriate pressure, and the polishing quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of diamond processing technology, and in particular to a diamond polishing mechanism. Background Technology

[0002] In the diamond processing, after each fine facet is cut, a meticulous polishing process is required. Polishing increases the smoothness of each facet, allowing the diamond to display a more dazzling luster under light.

[0003] In traditional diamond polishing, workers typically rely on manual adjustment of precision devices and magnifying glasses, repeatedly polishing and observing the diamond on a polishing machine. This process requires highly skilled craftsmen to ensure that the polished diamond meets industry standards. Due to the extremely high hardness and tiny size of diamonds, workers must invest a significant amount of time in meticulous observation and angle adjustments during the polishing process. This complexity leads to low polishing efficiency, thereby increasing labor costs. Furthermore, even minor errors during the polishing process can result in some facets not being fully polished, which not only reduces the overall polishing effect but may also affect the final luster and value of the diamond.

[0004] Therefore, there is an urgent need to develop a diamond polishing mechanism to achieve automatic polishing. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a diamond polishing mechanism that aims to automatically and fully polish each facet of the diamond, thereby improving the polishing effect.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A diamond polishing mechanism includes a drive motor, a polishing wheel driven and connected to the drive motor, and a clamp for clamping diamonds and changing the polishing position of the diamonds. The drive motor has an axially extending cavity inside its motor shaft. A first piston is provided in the cavity. The front end of the first piston is connected to a piston rod, and the rear end is squeezed by hydraulic oil injected into the cavity. The piston rod extends out of the cavity, and the polishing wheel is sleeved on the piston rod. A first spring is provided in the cavity and sleeved around the piston rod. The first spring is used to provide elastic force to the first piston to balance the oil pressure of the hydraulic oil. The tail end of the motor shaft is provided with a pressure sensing component for detecting the oil pressure in the cavity. The drive motor and the polishing wheel can move laterally under the drive of the lateral movement drive structure.

[0008] As a further improvement to the above technical solution, the pressure sensing component includes an oil pressure sensor and a rotary joint, wherein the oil pressure sensor is connected to the tail end of the motor shaft through the rotary joint.

[0009] As a further improvement to the above technical solution, the fixture includes a base, a swing shaft disposed on the base, a rotating shaft disposed on the swing shaft, and a clamping head disposed on the output end of the rotating shaft. The axis of the swing shaft extends vertically, and the axis of the rotating shaft is perpendicular to the axis of the swing shaft.

[0010] As a further improvement to the above technical solution, both the swing shaft and the rotation shaft are provided with clamping and positioning components.

[0011] As a further improvement to the above technical solution, the swing shaft includes a first housing, a first adjusting shaft rotatably disposed within the first housing, and a first driving structure for driving the first adjusting shaft to rotate. The first adjusting shaft extends vertically. The clamping and positioning assembly includes a brake ring sleeved on the first adjusting shaft, a second piston that can approach or move away from the brake ring, and a second spring for pushing the second piston toward the brake ring. The housing is provided with a brake release air passage communicating with the second piston. The brake release air passage is used to inject air pressure to push the second piston away from the brake ring.

[0012] As a further improvement to the above technical solution, the rotating shaft includes a second housing, a second adjusting shaft rotatably disposed within the second housing, and a second driving structure for driving the first adjusting shaft to rotate. The second adjusting shaft is parallel to the horizontal plane. The clamping and positioning assembly includes a brake ring sleeved on the second adjusting shaft, a second piston that can approach or move away from the brake ring, and a second spring for pushing the second piston toward the brake ring. The second housing is provided with a brake release air passage communicating with the second piston. The brake release air passage is used to inject air pressure to push the second piston away from the brake ring.

[0013] As a further improvement to the above technical solution, the fixture also includes a water spray pipe for spraying water onto the diamond.

[0014] As a further improvement to the above technical solution, a chip collection groove is provided below the polishing wheel.

[0015] As a further improvement to the above technical solution, the transverse drive structure is a linear module, and the drive motor is mounted on the slide of the linear module.

[0016] As a further improvement to the above technical solution, the clamp and the transverse linear module are mounted on the base plate.

[0017] The beneficial effects of this utility model are as follows: The diamond polishing mechanism provided by this utility model uses a pressure sensing component to feed back real-time pressure information of the polishing wheel, automatically controls the lateral drive structure to adjust the lateral position of the polishing wheel and automatically adjusts the position of the diamond on the fixture, quickly and accurately locates the polishing position and polishing force of each facet of the diamond, ensuring that each facet can be polished under stable and appropriate pressure, thus guaranteeing the stability and consistency of polishing quality and effectively avoiding the situation where some facets are not fully polished due to minor errors; it eliminates the need for repeated tedious observation and manual adjustment, improving the overall polishing efficiency and thus reducing labor costs. Attached Figure Description

[0018] Figure 1 A perspective view of the diamond polishing mechanism provided by this utility model.

[0019] Figure 2 This is a schematic diagram of the drive motor and the polishing wheel drive connection.

[0020] Figure 3 This is a structural diagram of the rotating shaft and the clamping and positioning assembly. The arrows indicate the direction of air pressure input.

[0021] Explanation of main component symbols: 1-Drive motor, 11-Motor shaft, 12-Cavity, 13-First piston, 14-Piston rod, 15-First spring, 16-Hydraulic oil, 2-Polishing wheel, 3-Clamp, 31-Base, 32-Swing shaft, 33-Rotation shaft, 331-Second housing, 332-Second adjusting shaft, 333-Second drive structure, 34-Clamping head, 35-Clamping and positioning assembly, 351-Brake ring, 352-Second piston, 353-Second spring, 354-Brake release air passage, 36-Water spray pipe, 4-Pressure sensing assembly, 41-Oil pressure sensor, 42-Rotary joint, 5-Transverse drive structure, 6-Chip collection groove, 7-Base plate, 8-Diamond, 9-Positioning seat. Detailed Implementation

[0022] This utility model provides a diamond polishing mechanism. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit the scope of protection of this utility model.

[0023] Please see Figure 1 and Figure 2This utility model provides a diamond polishing mechanism, including a drive motor 1, a polishing wheel 2 driven and connected to the drive motor 1, and a clamp 3 for clamping a diamond 8 and changing the polishing position of the diamond 8. The motor shaft 11 of the drive motor 1 has an axially extending cavity 12. The cavity 12 has a first piston 13. The front end of the first piston 13 is connected to a piston rod 14, and the rear end is squeezed by hydraulic oil 16 injected into the cavity 12. The piston rod 14 extends out of the cavity 12, and the polishing wheel 2 is sleeved on the piston rod 14. The cavity 12 has a first spring 15 sleeved around the piston rod 14. The first spring 15 is used to provide elastic force to the first piston 13 to balance the oil pressure of the hydraulic oil 16. The tail end of the motor shaft 11 has a pressure sensing component 4 for detecting the oil pressure in the cavity 12. The drive motor 1 and the polishing wheel 2 can move laterally under the drive of the transverse drive structure 5.

[0024] When the diamond polishing mechanism is started, the drive motor 1 begins to run, driving the polishing wheel 2 connected to it to rotate at high speed. The diamond 8 is clamped on the fixture 3, which can change the polishing position of the diamond 8 in order to process its various facets.

[0025] During the operation of the drive motor 1, the hydraulic oil pressure 16 and the pressure of the first spring 15 keep the first piston 13 in a state of dynamic equilibrium, ensuring that the piston rod 14 extends stably and rotates synchronously with the motor shaft 11. The pressure sensing component 4 at the tail end of the motor shaft 11 monitors the oil pressure inside the cavity 12 in real time. When the polishing wheel 2 polishes the diamond 8, if it encounters differences in hardness between different facets of the diamond 8 or uneven surfaces, the resistance experienced by the polishing wheel 2 will change. This change in resistance will be transmitted to the first piston 13 through the piston rod 14, thereby causing a change in the oil pressure inside the cavity 12. The pressure sensing component 4 will transmit a signal to the control system based on the change in oil pressure, i.e., the real-time pressure feedback. It is understandable that even if the pressure fluctuates instantaneously due to uneven facets of the diamond 8, the first spring 15 can act as a buffer, preventing sudden pressure changes from damaging the facets.

[0026] After receiving the information from the pressure sensing component 4, the control system analyzes and processes it. If it determines that the current polishing position needs adjustment, the control system issues a command to move the drive motor 1 and polishing wheel 2 laterally via the lateral drive structure 5, changing the relative position of the polishing wheel 2 and the diamond 8; and / or the control system can also issue a command to the clamp 3 to move the clamp 3, changing the polishing position of the diamond 8. In this way, by continuously adjusting the polishing position based on real-time pressure information, it ensures that each facet of the diamond 8 is effectively polished under appropriate pressure and angle, thereby improving the quality of the final product and avoiding a decrease in the luster and value of the diamond due to insufficient polishing of some facets.

[0027] For example, if the pressure is detected to be lower than the standard value, it indicates that the polishing wheel 2 is not applying sufficient polishing force to the facet. In this case, the position of the diamond 8 can be changed by adjusting the clamp 3 through a corresponding control mechanism, allowing the polishing wheel 2 to act more effectively on the facet and ensuring that each facet receives the appropriate polishing force, thus avoiding insufficient polishing. Conversely, if the pressure is too high, it can also be adjusted in time to prevent over-polishing and damage to the facet, thereby greatly improving the quality of the final product.

[0028] The diamond polishing mechanism provided by this utility model uses the pressure sensing component 4 to feed back the real-time pressure information of the polishing wheel 2, automatically controls the transverse drive structure 5 to adjust the lateral position of the polishing wheel 2 and automatically adjusts the position of the diamond 8 on the fixture 3, quickly and accurately locates the polishing position and polishing force of each facet of the diamond 8, ensuring that each facet can be polished under stable and appropriate pressure, guaranteeing the stability and consistency of polishing quality, and effectively avoiding the situation where some facets are not fully polished due to minor errors; it eliminates the need for repeated tedious observation and manual adjustment, improves the overall polishing efficiency, and thus reduces labor costs.

[0029] For details, please refer to Figure 2 The pressure sensing component 4 includes a hydraulic pressure sensor 41 and a rotary joint 42. The hydraulic pressure sensor 41 is connected to the tail end of the motor shaft 11 via the rotary joint 42. The rotary joint 42 ensures a reliable connection between the hydraulic pressure sensor 41 and the cavity 12 while guaranteeing the normal rotation of the motor shaft 11, thus ensuring stable transmission of the pressure signal. The hydraulic pressure sensor 41 can accurately measure the pressure of the hydraulic oil 16 inside the cavity 12. Its high-precision sensing characteristics can sensitively capture subtle changes in pressure, making the pressure feedback information more accurate and providing a reliable data basis for subsequent adjustment of the polishing position based on pressure.

[0030] For further details, please refer to [link / reference]. Figure 1 The fixture 3 includes a base 31, a swing shaft 32 mounted on the base 31, a rotating shaft 33 mounted on the swing shaft 32, and a clamping head 34 mounted on the output end of the rotating shaft 33. The axis of the swing shaft 32 extends vertically, and the axis of the rotating shaft 33 is perpendicular to the axis of the swing shaft 32. This configuration allows the clamping head 34 to have multi-dimensional adjustment capabilities. The swing shaft 32 allows the clamping head 34 to swing at an angle in the vertical plane, while the rotating shaft 33 allows the clamping head 34 to rotate 360 ​​degrees horizontally. This means that during the polishing process, the posture of the diamond 8 can be flexibly adjusted according to the position and angle requirements of different facets, ensuring that the polishing wheel 2 can polish the facets from various suitable angles. This greatly improves the comprehensiveness and accuracy of polishing and reduces the problem of insufficient polishing caused by angle limitations.

[0031] In this embodiment, the clamping head 34 is specifically a pneumatic clamp. The diamond is glued to the positioning seat 9, and then the pneumatic clamp holds the positioning seat 9.

[0032] Through the coordinated action of the oscillating shaft 32 and the rotating shaft 33, diamonds 8, whether of regular shape or with complex contours, can have their individual facets accurately exposed to the polishing wheel 2 for polishing by adjusting the oscillating shaft 32 and the rotating shaft 33. This makes the diamond polishing mechanism more versatile and able to meet diverse production needs.

[0033] Both the swing shaft 32 and the rotating shaft 33 are equipped with clamping and positioning components 35. These components allow for quick and secure locking of the diamond 8, which is mounted on the clamping head 34 at the output end of the rotating shaft 33, during the polishing process. Regardless of the force applied to the diamond 8 by the polishing wheel 2, the clamping and positioning components 35 effectively prevent displacement or rotation of the swing shaft 32 and the rotating shaft 33, ensuring that each facet of the diamond 8 is polished at the predetermined precise position. This significantly improves polishing accuracy, reduces uneven or incomplete polishing due to positional deviations, and ultimately enhances product quality.

[0034] Specifically, the swing shaft 32 includes a first housing, a first adjusting shaft rotatably disposed within the first housing, and a first driving structure for driving the first adjusting shaft to rotate. The first adjusting shaft extends vertically. The clamping and positioning assembly 35 includes a brake ring 351 sleeved on the first adjusting shaft, a second piston 352 that can approach or move away from the brake ring 351, and a second spring 353 for pushing the second piston 352 toward the brake ring 351. The housing is provided with a brake release air passage 354 communicating with the second piston 352. The brake release air passage 354 is used to inject air pressure to push the second piston 352 away from the brake ring 351. When the angle between the diamond 8 and the polishing wheel needs to be adjusted, air pressure is injected into the brake release air passage 354. The air pressure acts on the second piston 352, generating a thrust opposite to the elastic force of the second spring 353. The second piston 352 is pushed away from the brake ring 351, and the friction between the brake ring 351 and the second piston 352 disappears. The first adjusting shaft returns to its free rotation state, and the angle is then adjusted by the first drive structure. The first drive structure applies a driving force to the first adjusting shaft. Since the first adjusting shaft is rotatably mounted in the first housing, it rotates around its vertical axis under the action of the driving force. When the first adjusting shaft rotates to the target angle, the first drive structure is stopped and the air pressure input is disconnected. At this time, the elastic force of the second spring 353 continues to act on the second piston 352, pushing it against the brake ring 351. This causes the friction between the brake ring 351 and the second piston 352 to increase rapidly until it is sufficient to stop the rotation of the first adjusting shaft, thereby achieving a tight locking of the first adjusting shaft.

[0035] Similarly, see Figure 3The rotating shaft 33 includes a second housing 331, a second adjusting shaft 332 rotatably disposed within the second housing 331, and a second driving structure 333 for driving the first adjusting shaft to rotate. The second adjusting shaft 332 is parallel to the horizontal plane. The clamping and positioning assembly 35 includes a brake ring 351 sleeved on the second adjusting shaft 332, a second piston 352 that can approach or move away from the brake ring 351, and a second spring 353 for pushing the second piston 352 toward the brake ring 351. The second housing 331 is provided with a brake release air passage 354 communicating with the second piston 352. The brake release air passage 354 is used to inject air pressure to push the second piston 352 away from the brake ring 351. When the clamping angle of the diamond 8 needs to be adjusted, air pressure is injected into the brake release air passage 354. The air pressure acts on the second piston 352, generating a thrust opposite to the elastic force of the second spring 353. The second piston 352 is pushed away from the brake ring 351, and the friction between the brake ring 351 and the second piston 352 disappears. The second adjusting shaft returns to its free rotation state, and the angle is then adjusted by the second drive structure. The second drive structure applies a driving force to the second adjusting shaft. Under the action of the driving force, the diamond on the clamping head rotates to switch the machining surface. When the second adjusting shaft rotates to the target angle, the second drive structure is stopped and the air pressure input is disconnected. At this time, the elastic force of the second spring 353 continues to act on the second piston 352, pushing it against the brake ring 351. This causes the friction between the brake ring 351 and the second piston 352 to increase rapidly until it is sufficient to stop the rotation of the second adjusting shaft, thereby achieving a tight locking of the second adjusting shaft and ensuring that the diamond 8 clamped on the clamping head 34 at the output end of the rotating shaft 33 remains in a precise position.

[0036] The rotating shaft 33, in conjunction with the clamping and positioning assembly 35, enables precise and omnidirectional adjustment of the clamping angle of the diamond 8 in the horizontal direction. During the polishing process of the diamond 8, facets in different directions need to be polished. The second drive structure 333 can quickly drive the second adjusting shaft 332 to rotate. Once the desired angle is reached, the clamping and positioning assembly 35 quickly locks in place, ensuring stable positioning at any angle on the horizontal plane. This allows all facets of the diamond 8 in various horizontal directions to be accurately polished by the polishing wheel 2, greatly improving the comprehensiveness and precision of the polishing process and ensuring high product quality.

[0037] The first drive structure and the second drive structure 333 can specifically be a brushless motor structure.

[0038] Preferably, the clamp 3 further includes a water spray pipe 36 for spraying water onto the diamond 8. The water spray pipe 36 continuously sprays water onto the diamond 8, which can promptly remove the heat generated by friction. The water spraying process can also wash away the debris and powder generated during the polishing process on the surface of the diamond 8, preventing debris from remaining on the surface of the diamond 8 and potentially affecting the contact effect between the polishing wheel 2 and the diamond 8.

[0039] Preferably, a chip collection groove 6 is provided below the polishing wheel 2. During the polishing process of the diamond 8, a large amount of chips are generated. The chip collection groove 6, located below the polishing wheel 2, can directly collect the chips polished off the surface of the diamond 8. This prevents chips from scattering everywhere, ensuring a relatively clean working area and reducing the difficulty and time cost of subsequent cleaning work. Compared with the situation where chips are scattered randomly, the chip collection groove 6 can collect chips in a concentrated manner, making it easier to handle them uniformly and improving the management efficiency of the production site.

[0040] In this embodiment, the transverse drive structure 5 is a linear module, and the drive motor 1 is mounted on the slide of the linear module. During the polishing process of the diamond 8, the position of the polishing wheel 2 needs to be precisely controlled to ensure that each facet is polished evenly and appropriately. The high-precision positioning function and smooth movement of the linear module allow the drive motor 1 to move accurately to the designated position, meeting the polishing requirements of different facets. Compared with other possible drive methods, the linear module greatly improves the accuracy of the position control of the polishing wheel 2, further improving the quality of diamond 8 polishing and reducing product defects caused by positional deviations. In fact, the load change of the linear module is fed back to the control system, which can also help determine whether polishing is complete. During polishing, the load will drop to the set value and tend to stabilize.

[0041] Preferably, the clamp 3 and the transverse linear module are mounted on the base plate 7. The base plate 7 provides a common fixed reference for the clamp 3 and the transverse linear module, ensuring that the relative positions of the components remain constant during operation. This allows for precise synchronization between the positioning of the diamond 8 by the clamp 3 and the movement of the polishing wheel 2 driven by the transverse linear module during polishing. Of course, during polishing, the friction between the polishing wheel 2 and the diamond 8 will generate a certain degree of vibration, which the base plate 7 can disperse and absorb.

[0042] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A diamond polishing mechanism, characterized in that, The device includes a drive motor, a polishing wheel connected to the drive motor, and a fixture for clamping diamonds and changing their polishing position. The drive motor has an axially extending cavity within its motor shaft. A first piston is located within the cavity, with its front end connected to a piston rod and its rear end compressed by hydraulic oil injected into the cavity. The piston rod extends out of the cavity, and the polishing wheel is fitted onto the piston rod. A first spring is located within the cavity and is fitted around the piston rod. This spring provides elasticity to the first piston to balance the hydraulic oil pressure. The tail end of the motor shaft is equipped with a pressure sensing component for detecting the oil pressure within the cavity. The drive motor and polishing wheel can move laterally under the influence of the lateral movement drive structure.

2. The diamond polishing mechanism according to claim 1, characterized in that, The pressure sensing component includes a hydraulic pressure sensor and a rotary joint. The hydraulic pressure sensor is connected to the tail end of the motor shaft via the rotary joint.

3. The diamond polishing mechanism according to claim 1, characterized in that, The fixture includes a base, a swing shaft mounted on the base, a rotating shaft mounted on the swing shaft, and a clamping head mounted on the output end of the rotating shaft. The axis of the swing shaft extends vertically, and the axis of the rotating shaft is perpendicular to the axis of the swing shaft.

4. The diamond polishing mechanism according to claim 3, characterized in that, Both the swing shaft and the rotation shaft are equipped with clamping and positioning components.

5. The diamond polishing mechanism according to claim 4, characterized in that, The swing shaft includes a first housing, a first adjusting shaft rotatably disposed within the first housing, and a first driving structure for driving the first adjusting shaft to rotate. The first adjusting shaft extends vertically. The clamping and positioning assembly includes a brake ring sleeved on the first adjusting shaft, a second piston that can approach or move away from the brake ring, and a second spring for pushing the second piston toward the brake ring. The housing is provided with a brake release air passage communicating with the second piston. The brake release air passage is used to inject air pressure to push the second piston away from the brake ring.

6. The diamond polishing mechanism according to claim 4, characterized in that, The rotating shaft includes a second housing, a second adjusting shaft rotatably disposed within the second housing, and a second driving structure for driving the first adjusting shaft to rotate. The second adjusting shaft is parallel to the horizontal plane. The clamping and positioning assembly includes a brake ring sleeved on the second adjusting shaft, a second piston that can approach or move away from the brake ring, and a second spring for pushing the second piston toward the brake ring. The second housing is provided with a brake release air passage communicating with the second piston. The brake release air passage is used to inject air pressure to push the second piston away from the brake ring.

7. The diamond polishing mechanism according to claim 1, characterized in that, The clamp also includes a water spray pipe for spraying water onto the diamond.

8. The diamond polishing mechanism according to claim 1, characterized in that, The polishing wheel is provided with a chip collection groove below it.

9. The diamond polishing mechanism according to claim 1, characterized in that, The lateral movement drive structure is a linear module, and the drive motor is mounted on the slide of the linear module.

10. The diamond polishing mechanism according to claim 9, characterized in that, The clamps and the lateral linear module are mounted on the base plate.

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