Diamond cutting blade surface defect detection device

Abstract

A diamond cutting blade surface defect detection device comprises a base; the guide rail is fixed on the base; the sliding block can slide along the guide rail, and a conical limiting cone is arranged on the sliding block and used for being inserted into a center hole of a blade to be detected to achieve positioning; the measuring mechanism is fixed at the side part of the guide rail and comprises a micrometer and a measuring head, and the micrometer is hinged to the base through a bracket and can swing back and forth, so that the measuring head is in contact with the surface of the blade to be measured; a locking adjusting mechanism is arranged between the sliding block and the guide rail, and a locking device is arranged between the measuring mechanism and the base. The measuring mechanism further comprises a force control limiting device used for controlling the pressure of the measuring head in contact with the surface of the blade to be constant. The problems that an existing detection means is unstable in measurement, uncontrollable in contact pressure, lack of a multi-angle and bounce detection function, large in environment vibration interference and the like are effectively solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of precision measurement and quality inspection, and particularly relates to a device for detecting surface defects of diamond cutting blades. Background Art

[0002] During the manufacturing and use of diamond cutting blades, their surface quality has an important impact on subsequent processing accuracy and service life. In particular, defects such as cracks, pits, chipping, runout, and uneven roughness on the blade surface can easily lead to blade breakage, workpiece damage, or unstable cutting quality during the processing. Therefore, the demand for detecting surface defects of diamond cutting blades is becoming increasingly prominent, and the existing industry mainly uses contact or non-contact means to detect the surface quality of the blades.

[0003] Currently, the commonly used detection methods mainly include manual visual inspection, microscope observation, laser scanning, optical interference, and micrometer measurement, etc. Among them, manual visual inspection and microscope observation are limited by human experience and detection efficiency, and it is difficult to quantitatively evaluate surface roughness or runout error. Although laser or optical devices have the advantages of non-contact and high precision, they are expensive and have complex structures, which are not conducive to popularization and application in ordinary production environments. The traditional micrometer measurement method usually uses a fixed bracket or manual hand-held operation, with poor measurement stability, and it is easy to affect the detection results due to uneven pressure or operation error. In addition, existing measurement devices generally lack the ability to detect radial runout under the rotating state of the blade, and cannot comprehensively reflect the installation concentricity or balance of the blade. At the same time, most devices do not have a shock absorption system, and are easily interfered by environmental vibrations, affecting the recognition accuracy of micro-defects.

[0004] In practical applications, there is also the problem that it is difficult to control the contact pressure of the measuring head. Excessive or too small contact pressure may introduce measurement errors and even damage brittle blades. Some devices lack force control feedback and limit adjustment functions, and cannot effectively ensure the consistency and repeatability of measurement contact. In addition, most existing detection devices rely on manual data recording, lack electronic and digital output interfaces, and are inconvenient for data management, which is not conducive to batch detection and traceability management. Therefore, the existing technology still has deficiencies in aspects such as rapid positioning, stable fixation, multi-angle detection, force control limit, data management, and anti-interference, and urgent improvement is needed. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the present invention provides a device for detecting surface defects of diamond cutting blades, which effectively solves the problems of unstable measurement, uncontrollable contact pressure, lack of multi-angle and runout detection functions, and large interference from environmental vibrations in the existing detection means.

[0006] The technical solutions adopted by the present invention to solve the above problems are as follows: A diamond cutting blade surface defect detection device, comprising: A base; A guide rail fixed on the base; A slider slidable along the guide rail, with a conical limit cone arranged on the slider for inserting into the central hole of the blade to be measured for positioning; A measuring mechanism fixed on the side of the guide rail, the measuring mechanism includes a micrometer and a measuring head, the micrometer is hinged and installed on the base through a bracket and can swing back and forth to make the measuring head contact the surface of the blade to be measured; A locking and adjusting mechanism is provided between the slider and the guide rail, and a locking device is provided between the measuring mechanism and the base; The measuring mechanism further includes a force control limit device for controlling the constant pressure of the measuring head contacting the blade surface.

[0007] Preferably, the base includes: A matrix platform: made of high-rigidity cast iron after aging treatment, the upper surface is precision ground, and the flatness error does not exceed 0.02 mm / m; A guide rail installation part: fixedly connected to the matrix platform through bolts and fixedly connected to the guide rail; An adjustable shock absorption system: composed of rubber vibration isolation pads to form a shock absorption layer, arranged at the four corners of the bottom of the matrix platform.

[0008] Preferably, the adjustable shock absorption system includes: A mechanical leveling mechanism, a lead screw is threadedly connected to the bottom end of the matrix platform, and an adjusting disk is fixed to the lower side of the lead screw; A shock absorption component, the bottom end of the lead screw is connected to the rubber vibration isolation pad through a bearing; A horizontal measurement component, including a circular spirit level, the aluminum alloy housing of the circular spirit level is adhesively fixed on the milled plane at the center of the matrix platform through epoxy resin glue, there is a concentric scale ring on the top of the housing of the circular spirit level, and the scale interval is 1 mm / m; the methyl silicone oil with a viscosity of 200 - 250 cSt is filled inside the spirit level, and the bubble diameter is 8 ± 0.5 mm.

[0009] Preferably, the slider is slidably connected to the guide rail, a ring-shaped limit seat is fixedly connected to the top end of the slider, the top end of the limit seat is rotatably connected to a ring-shaped rotating seat through a bearing, and a rubber anti-slip pad is fixed to the top end of the rotating seat; a limit rod is fixedly connected to the top end of the slider, the limit rod is located at the center of the limit seat, a through hole is opened in the center of the limit cone, and the limit cone is limited to the blade to be measured through the cooperation of the through hole and the limit rod.

[0010] Preferably, the locking and adjusting mechanism includes a screw threadedly connected to the slider, and the screw is tightened to form a structure in which the slider and the slide rail are fixed in position.

[0011] Preferably, the locking device includes a fixed seat fixed to the base. A limit screw is provided at the side end of the fixed seat. A bottom swing sleeve that can rotate back and forth is sleeved on the outer periphery of the limit screw. A limit nut for fixing the bottom swing sleeve is threadedly connected to the end of the limit screw. The bottom swing sleeve is fixedly connected to a bottom swing rod. A vertical movement sleeve is slidably connected to the outer periphery of the bottom swing rod. A locking screw for fixing the vertical movement sleeve and the bottom swing rod is threadedly connected to the side end of the vertical movement sleeve. A rotatable control screw is sleeved on the side end of the vertical movement sleeve. The front end of the control screw is fixedly connected to a top swing rod. A control nut is threadedly connected to the rear end of the control screw. An insertion sleeve is provided at the end of the top swing rod. The insertion sleeve cooperates with the lower side of the micrometer. A set screw for positioning the micrometer and the insertion sleeve is threadedly connected inwardly on the outer side of the insertion sleeve.

[0012] Preferably, the force control and limit device includes: Spring pressure adjustment mechanism: A compression spring is provided between the bottom swing rod and the vertical movement sleeve. The two ends of the spring respectively press against the annular boss of the bottom swing rod and the end face of the vertical movement sleeve. An adjustment spring is sleeved on the control screw, and this spring is located between the top swing rod and the control nut. An elastic washer is provided at the end of the locking screw, and the washer is in elastic contact with the surface of the bottom swing rod. Force feedback mechanism: A strain force sensor is provided on the inner wall of the insertion sleeve, and the sensor fits against the lower surface of the micrometer. The signal wire of the sensor is led out along the internal channel of the top swing rod and connected to a force value display fixed on the fixed seat. Linkage limit structure: The swing range of the bottom swing sleeve is limited by the limit nut on the limit screw. The sliding stroke of the vertical movement sleeve is displayed through the scale marks on the bottom swing rod. The rotation angle of the control screw is indicated by the angle scale on the side of the top swing rod.

[0013] The structure of the present invention is novel, ingeniously conceived, and simple and convenient to operate. Compared with the prior art, it has the following advantages: 1. This device adopts a combined positioning structure of a conical limit cone, a limit seat, and a limit rod, which can accurately and quickly fix the diamond cutting blade on the measurement platform, avoiding the extrusion or damage to the blade edge by traditional fixtures. With the sliding adjustment and locking structure of the slider and the guide rail, it can flexibly adapt to blades of different diameters or thicknesses, improving the versatility and adaptability of the device. At the same time, the adjustable shock absorption system and high-precision level adjustment structure provided on the base can effectively isolate ground vibrations and unstable factors, ensuring a stable and reliable detection environment and improving the measurement accuracy.

[0014] 2. The measuring mechanism of this device is designed with a micrometer and a multi-dimensional adjustable swing mechanism, which can not only achieve front-back position adjustment, but also enable the measuring head to fully contact the blade surface through vertical and angular adjustments, thereby realizing defect detection from multiple angles and in multiple directions. A force control limit device is also integrated at the end of the measuring head, including spring pressure adjustment, force sensing feedback, and linkage limit structure, which can monitor the contact pressure in real time, avoid measurement errors or blade damage caused by improper operation, improve the consistency and repeatability of the measurement process, and is especially suitable for detecting high-value and high-brittle blades.

[0015] 3. This device also has a force value display function, which can real-time feedback the contact pressure data through a strain force sensor and a display unit to assist the operator in accurately controlling the measurement force and improving the credibility of the data. At the same time, the locking structure of the measuring mechanism ensures the stability and reliability of the measuring head during contact, avoiding errors caused by loosening or slipping of the measuring mechanism. In addition, the device has a compact structure and is easy to operate, without a complex electronic control system, facilitating popularization and application in production workshops or quality inspection laboratories, and having good practicability and economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an axonometric view of the surface defect detection device for diamond cutting blades of the present invention.

[0017] Figure 2 is an axonometric view of the surface defect detection device for diamond cutting blades of the present invention after removing the blade to be measured.

[0018] Figure 3 is an axonometric view of the slider and its connecting components of the surface defect detection device for diamond cutting blades of the present invention.

[0019] Figure 4 is an axonometric view of the fixed seat and its connecting components of the surface defect detection device for diamond cutting blades of the present invention.

[0020] In the drawings: 1 - base, 2 - guide rail, 3 - fixed seat, 4 - bottom swing rod, 5 - vertical moving sleeve, 6 - top swing rod, 7 - insertion sleeve, 8 - dial indicator, 9 - limit rod, 10 - limit cone, 11 - blade to be measured, 12 - slider, 13 - limit seat, 14 - rotating seat, 15 - bottom swing sleeve, 16 - limit screw, 17 - limit nut, 18 - locking screw, 19 - control screw, 20 - control nut, 21 - stop screw. DETAILED DESCRIPTION OF THE INVENTION

[0021] The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described in conjunction with the drawings, but the present invention is not limited to these embodiments.

[0022] As Figures 1 to 4As shown in the figure, a device for detecting surface defects of a diamond cutting blade provided by the present invention includes a base 1, a guide rail 2, a slider 12, a limit cone 10, a measuring mechanism, and related adjustment and locking structures. The base 1 is the supporting main body of the device, which is integrally formed by high-strength materials to ensure the overall rigidity and structural stability. An adjustable shock-absorbing structure is provided at the bottom. By combining rubber vibration isolation pads and a mechanical leveling mechanism, it effectively isolates external vibration interference and ensures the stability and reliability of the device in a micro-measurement environment. The guide rail 2 is fixedly installed on the base 1 and arranged along the length direction of the base, providing an accurate linear guide and sliding track for the slider 12 to ensure the smooth movement and positioning of the slider 12 during the measurement process.

[0023] The slider 12 can move smoothly along the guide rail 2 and is fixed at the required position through a locking adjustment mechanism. An annular limit seat 13 is provided on the upper surface of the slider 12. The top end of the limit seat 13 is rotatably connected to a rotating seat 14 through a bearing. The surface of the rotating seat 14 is covered with a rubber anti-slip pad, which is used to support the blade 11 to be measured and prevent the blade from sliding or shaking during the detection process. A limit rod 9 is provided at the center of the limit seat 13. The limit rod 9 is used in cooperation with the limit cone 10. The limit cone 10 has a conical structure with its large end facing upward and a through hole provided at its small end. The through hole is coaxially matched with the limit rod 9. When the central hole of the blade 11 to be measured is aligned with the limit cone 10 and inserted, the limit cone 10 realizes the preliminary positioning of the blade 11 through interference fit on the conical surface. At the same time, the limit rod 9 passes through the through hole of the limit cone 10 to further restrict the radial and axial movements of the blade 11, ensuring that the blade 11 is stably fixed at the detection position.

[0024] The measuring mechanism is arranged on one side of the guide rail 2 and includes a micrometer 8, a measuring head, and a multi-stage adjustment and locking structure. The micrometer 8 is hingedly installed on the base 1 through a bottom swing rod 4, a bottom swing sleeve 15, and a fixed seat 3 and can swing back and forth around a limit screw 16 to enable the measuring head to accurately contact the surface of the blade 11. A vertical movement sleeve 5 is slidably connected to the bottom swing rod 4. The vertical movement sleeve 5 can slide up and down along the bottom swing rod 4 and is locked in position by a locking screw 18. Combining the fine adjustment functions of a control screw 19 and a control nut 20, the height and angle of the measuring head can be accurately adjusted. The top swing rod 6 is fixedly connected to an insertion sleeve 7. The insertion sleeve 7 is matched with the lower end of the micrometer 8 and is locked by a stop screw 21 to ensure the stability of the micrometer 8 during the measurement process.

[0025] To ensure a constant measurement contact pressure, a force control and limit device is provided inside the measuring mechanism. This device includes a spring pressure adjustment mechanism and a force feedback mechanism. The spring pressure adjustment mechanism consists of a compression spring disposed between the bottom swing rod 4 and the vertical shift sleeve 5. The two ends of the spring respectively abut against the annular boss of the bottom swing rod 4 and the end face of the vertical shift sleeve 5. By adjusting the tightness of the locking screw 18, the pre-tightening force of the spring can be adjusted, thereby controlling the contact pressure between the measuring head and the blade surface. The inner wall of the insertion sleeve 7 is provided with a strain type force sensor, which can collect the contact force signal applied by the measuring head on the blade surface in real time and transmit it to the force value display fixed on the fixed seat 3 through a signal line, facilitating the operator to monitor and adjust the contact force in real time to ensure the consistency and safety of each measurement.

[0026] Through scientific structural design, combining functions such as multi-level adjustment, limit locking, force control feedback, and vibration isolation, this device realizes the efficient and precise detection of surface defects of diamond cutting blades. It has a reasonable structure, a feasible manufacturing process, and is suitable for mass production and industrial applications.

[0027] The base 1 serves as the main support platform of this device. It is integrally cast from high-rigidity cast iron material and undergoes sufficient aging treatment to eliminate internal stress, ensuring that it is not easily deformed during long-term use. To improve the overall measurement accuracy, the upper surface of the base 1 is processed by a high-precision grinding process to ensure that the surface flatness error does not exceed 0.02 mm / m, enabling the guide rail 2 to be installed on a stable and horizontal reference plane, thereby improving the linear sliding accuracy of the slider 12 on the guide rail 2 and ensuring the consistency and repeatability of the measurement results. The base 1 has a compact structural design and sufficient rigidity, and can effectively bear the weight of various measuring components and workpieces, avoiding measurement errors caused by structural deformation.

[0028] The upper part of the base 1 is provided with a mounting portion for the guide rail 2. This mounting portion is firmly connected to the base platform by bolts and is accurately fitted with the guide rail 2 at the same time, ensuring that the guide rail 2 is stably fixed along the length direction of the base platform and is not easily loosened or displaced. The installation accuracy of the guide rail 2 directly affects the sliding accuracy of the slider 12 and the overall measurement effect. Therefore, the machining and assembly accuracies of the mounting portion of the guide rail 2 are strictly controlled to ensure that the guide rail 2 has good straightness and parallelism after installation.

[0029] To effectively isolate external vibration interference and improve measurement stability, adjustable shock absorption systems are provided at the four corner positions of the bottom of the base 1. This shock absorption system is jointly composed of rubber vibration isolation pads and mechanical leveling mechanisms. Among them, the rubber vibration isolation pads can absorb the low-frequency vibrations generated by the operation of the ground or surrounding equipment and reduce the interference of vibrations on micro-measurements. A screw thread-connected lead screw is provided at each shock absorption point, and an adjustment disk is fixed at the lower end of the lead screw. By rotating the adjustment disk, the overall level adjustment of the base platform can be realized to adapt to different installation environments.

[0030] In addition, to ensure the horizontal state of the platform installation, the shock absorption system is also integrated with a horizontal measurement component. This component uses a circular spirit level as the horizontal detection device. The aluminum alloy housing of the spirit level is firmly bonded to the milled plane at the center of the base platform through epoxy resin glue to ensure that the position is centered and the fixation is reliable. A concentric scale ring is provided at the top of the housing of the spirit level, with a scale interval of 1 mm / m, which is convenient for the operator to accurately read the horizontal state of the platform according to the position of the bubble. The inside of the spirit level is filled with methyl silicone oil with a viscosity of 200-250 cSt. The fluidity of the oil is moderate, which can effectively stabilize the movement of the bubble and ensure accurate reading. The diameter of the bubble is designed to be 8±0.5 mm, with clear visual recognition, which is convenient for quickly adjusting the platform to be horizontal.

[0031] The base 1 not only provides a stable mechanical foundation for the entire device, but also ensures good working stability and measurement accuracy of the device in various usage environments through functions such as shock absorption, leveling, and horizontal monitoring, avoiding interference with the measurement results caused by uneven ground or environmental vibrations, and greatly improving the practicality and reliability of the device.

[0032] In a further specific embodiment of the present invention, the slider 12 and the guide rail 2 adopt a sliding connection structure. The slider 12 is in close fit with the sliding surface of the guide rail 2 through its bottom, ensuring that the slider 12 can move smoothly along the length direction of the guide rail 2 without jamming or shaking. In order to improve the stability and wear resistance of the sliding, the contact surface between the bottom of the slider 12 and the guide rail 2 is preferably processed by high-precision grinding or plating treatment process to reduce the friction resistance and improve the guiding accuracy. The sliding stroke of the slider 12 covers the effective length range of the entire guide rail 2, which can adapt to the installation requirements of blades of different sizes and has good adaptability and flexibility.

[0033] A limit seat 13 is provided at the top of the slider 12. The limit seat 13 is of an annular structure and is fixedly connected to the slider 12 at the bottom through mechanical fastening or interference fit to ensure the structural strength and stability. The upper end of the limit seat 13 is rotatably connected to a rotating seat 14 through a high-precision bearing. The rotating seat 14 is also of an annular structure and can freely rotate around the central axis of the limit seat 13. The rotation process is smooth and does not jam. A rubber anti-slip pad is fixed on the upper surface of the rotating seat 14. The material of the anti-slip pad is preferably high-elastic wear-resistant rubber or silicone, which can provide good friction and effectively prevent the blade 11 to be measured from slipping or shaking during placement, ensuring that the blade is stably fixed at the detection position.

[0034] At the central position of the limit seat 13, a limit rod 9 is fixedly connected to the slider 12. The limit rod 9 is a slender cylindrical rod, located at the rotation center of the limit seat 13 and the swivel base 14, and extends vertically upward. The diameter and height of the limit rod 9 are precisely designed to cooperate with the through-hole of the limit cone 10 and can penetrate into the central hole of the limit cone 10 to form a coaxial positioning relationship. The limit cone 10 is integrally in a conical structure, with its large end facing upward and a central through-hole at its small end. The size of this through-hole is closely matched with the limit rod 9. When the limit cone 10 is inserted onto the limit rod 9, it can achieve preliminary positioning by contacting the conical surface of the central hole of the blade 11 through its conical surface. At the same time, the limit rod 9 passes through the through-hole of the limit cone 10 to further restrict the radial and axial movement of the blade, thereby achieving the effect of quickly, accurately, and stably installing and fixing the blade to be measured.

[0035] To ensure the stable fixation of the slider 12 in the appropriate position and avoid affecting the measurement accuracy due to the change of the slider position during the detection process, a locking and adjusting mechanism is provided between the slider 12 and the guide rail 2. This locking and adjusting mechanism includes a screw structure. The screw is connected to the slider 12 through a thread. The operator can lock or release the slider 12 on the guide rail 2 by tightening or loosening the screw. After the slider 12 moves to the appropriate position, tightening the screw can firmly fix the slider 12 on the guide rail 2, avoiding position deviation due to external interference or vibration during use, and ensuring the measurement stability and repeatability. The end of the screw is preferably designed with an anti-loosening structure, such as an elastic washer or a nylon locking ring, to improve the locking reliability and service life.

[0036] This part of the structure can achieve the rapid installation and stable fixation of diamond cutting blades of different sizes through the sliding adjustment and locking fixation of the slider 12, combined with the coaxial positioning design of the limit seat 13, the swivel base 14, the limit cone 10, and the limit rod 9. It is easy to operate, accurately positioned, avoids shaking, improves the stability and adaptability of the overall detection process, and has good practical application value.

[0037] As Figures 1 to 4 shown, the locking device is used for position adjustment and stable locking of the measuring mechanism, including components such as a fixed seat 3, a limit screw 16, a bottom swing sleeve 15, a bottom swing rod 4, a vertical movement sleeve 5, a control screw 19, a top swing rod 6, an insertion sleeve 7, a micrometer 8, and a set screw 21. The fixed seat 3 is fixedly installed on the side of the base 1 and is firmly connected by means such as bolts or welding, serving as the bearing base of the entire measuring mechanism. A limit screw 16 is installed at the side end of the fixed seat 3. The limit screw 16 penetrates through the fixed seat 3 and extends horizontally to the outside of the device. A bottom swing sleeve 15 that can swing back and forth is sleeved on the outer periphery of the limit screw 16. The bottom swing sleeve 15 can rotate around the axis of the limit screw 16 to adjust the position angle of the measuring mechanism relative to the base 1.

[0038] In order to ensure that the bottom swing sleeve 15 can be firmly locked after swinging to an appropriate angle, a limit nut 17 is threadedly connected to the end of the limit screw 16. After the limit nut 17 is tightened, it can press the bottom swing sleeve 15 against the fixed seat 3, preventing it from shaking or deviating in angle during the measurement process, and improving the stability and repeatability of the measurement. A bottom swing rod 4 is fixedly connected to the outside of the bottom swing sleeve 15. The bottom swing rod 4 extends in the vertical direction and serves as the main load-bearing component for supporting and adjusting the measuring head.

[0039] A vertical movement sleeve 5 is slidably connected to the outer periphery of the bottom swing rod 4. The vertical movement sleeve 5 can slide up and down along the axial direction of the bottom swing rod 4 to adjust the height position of the measuring head. A locking screw 18 is provided at the side end of the vertical movement sleeve 5. By tightening or loosening the locking screw 18, the position of the vertical movement sleeve 5 on the bottom swing rod 4 can be locked or released, thus completing the rapid adjustment and fixation of the height of the measuring head. A control screw 19 is also sleeved on the outside of the vertical movement sleeve 5. The control screw 19 is connected to the vertical movement sleeve 5 by a thread. The first end of the control screw 19 is fixedly connected to a top swing rod 6. The top swing rod 6 is used to support and adjust the position of the micrometer 8. A control nut 20 is threadedly connected to the end of the control screw 19. Rotating the control nut 20 can drive the control screw 19 and the top swing rod 6 to move finely in the vertical direction, realizing the fine adjustment of the fine position of the measuring head and meeting different measurement requirements.

[0040] An insertion sleeve 7 is provided at the end of the top swing rod 6. An installation cavity is formed inside the insertion sleeve 7 for precise cooperation with the lower end of the micrometer 8, ensuring that the micrometer 8 is firmly installed and in the correct position. Internal threads are provided on the outside of the insertion sleeve 7. Used in conjunction with a set screw 21, the set screw 21 can fix the micrometer 8 in the insertion sleeve 7 by tightening, preventing the micrometer 8 from loosening due to vibration or external force during the measurement process.

[0041] This locking device realizes the angle adjustment and locking of the measuring mechanism in the horizontal direction through the combination of the fixed seat 3, the limit screw 16 and the limit nut 17; realizes the height adjustment of the measuring mechanism in the vertical direction through the cooperation of the bottom swing rod 4 and the vertical movement sleeve 5; realizes the fine adjustment of the measuring head at the micron level through the fine adjustment structure of the control screw 19 and the control nut 20; and finally ensures the reliable installation of the micrometer 8 and avoids falling off or position deviation through the cooperation of the insertion sleeve 7 and the set screw 21. This structure is not only flexible in adjustment and simple in operation, but also reliable in locking and good in stability. It can meet the requirements of multi-point and multi-angle measurement on the surfaces of different blades, improving the application range and measurement accuracy of the device, and is very suitable for mass production and industrialized popularization and application.

[0042] To ensure that the measuring head applies an appropriate and constant pressure when contacting the surface of the blade to be measured, and to avoid damaging the blade due to excessive pressure or unstable measurement due to insufficient pressure, a force control and limit device is specially designed for this device. This device includes three parts: a spring pressure adjustment mechanism, a force feedback mechanism, and a linkage limit structure. It can achieve mechanical controllability while providing real-time force value feedback and cooperate with structural limits to ensure the repeatability and reliability of the measurement action.

[0043] Among them, the spring pressure adjustment mechanism forms a preliminary elastic support by setting a compression spring between the bottom swing rod 4 and the vertical displacement sleeve 5. The two ends of the compression spring are respectively pressed against the annular boss of the bottom swing rod 4 and the end face of the vertical displacement sleeve 5. When the vertical displacement sleeve 5 generates displacement during the adjustment process, the compression spring deforms accordingly, thereby applying a constant elastic force to the measuring head. The operator can adjust the position of the vertical displacement sleeve 5 through the locking screw 18, and then finely adjust the pre-tightening force of the spring to achieve rough pressure control. In addition, another set of adjustment springs is sleeved on the control screw 19. This spring is located between the top swing rod 6 and the control nut 20. When the operator rotates the control nut 20, this adjustment spring will be compressed or released to further finely adjust the pressure of the measuring head. An elastic washer is also provided at the end of the locking screw 18. The washer forms an elastic contact with the surface of the bottom swing rod 4, which can effectively prevent loosening during the locking process and provide a certain buffering effect, improving the locking reliability and operation feel.

[0044] To achieve real-time monitoring of the contact pressure, a strain force sensor is mounted on the inner wall of the insertion sleeve 7 of this device. The force sensor is directly attached to the lower end surface of the micrometer 8. When the measuring head contacts the surface of the blade and produces a small deformation, the force sensor can sense this deformation and convert it into an electrical signal. The signal wire of the sensor is led out along the channel reserved inside the top swing rod 6 and connected to the force value display mounted on the fixed seat 3. The force value display can display the pressure value currently applied by the measuring head on the surface of the blade in real time, facilitating the operator to intuitively judge whether the preset ideal contact force is reached, and avoiding measurement errors or blade damage caused by blind operation.

[0045] In addition, the device is also designed with a linkage limit structure for physically limiting the movement range of the measuring mechanism to prevent exceeding the safe range. Specifically, it includes: the swing angle of the bottom swing sleeve 15 is jointly limited by the limit screw 16 and the limit nut 17 to prevent the measuring mechanism from swinging excessively and causing position out of control; the sliding stroke of the vertical displacement sleeve 5 is displayed by the scale marks engraved on the surface of the bottom swing rod 4. The operator can intuitively judge the current height position according to the scale, which is convenient for quick adjustment; the rotation angle of the control screw 19 is indicated by the angle scale on the side of the top swing rod 6, providing a clear reference for fine adjustment angles and improving the accuracy and controllability of the adjustment.

[0046] Through the organic combination of elastic support, fine-tuning mechanism, force value feedback and physical limit, the force control limit device realizes the precise control and real-time monitoring of the measured pressure, effectively improves the measurement safety, stability and repeatability of the device, is applicable to the surface defect detection of diamond cutting blades with different thicknesses and materials, and has good industrial application value and popularization prospects.

[0047] When the device is in use, ① Place the device on a stable working platform, rotate the adjustment disk to horizontally adjust the base platform, observe the position of the bubble in the spirit level, and keep the bubble at the center position of the concentric circle scale ring to ensure that the base 1 is in a horizontal state. Then lock the leveling mechanism to fix the level; ② Loosen the screw, slide the slider 12 along the guide rail 2 to a suitable position, according to the size of the blade 11 to be measured, align the central hole of the blade 11 with the limit cone 10 and put it on, so that the limit cone 10 cooperates with the limit rod 9 to complete the blade positioning. At the same time, the blade 11 is supported on the rubber anti-slip pad of the turntable 14 to ensure stability without shaking, and fix the position of the slider 12 by tightening the screw; ③ Adjust the limit nut 17 to release the bottom swing sleeve 15, swing the measuring mechanism so that the measuring head of the micrometer 8 is aligned with the surface of the blade 11 to be measured, tighten the limit nut 17 to lock the angle, loosen the locking screw 18 to adjust the height of the vertical movement sleeve 5, cooperate with the rotation of the control nut 20 to finely adjust the position of the measuring head, observe the force value display to read the contact pressure, after adjusting to the appropriate range, lock the locking screw 18 and the stop screw 21 to fix the position of the micrometer 8. Finally, slowly rotate the turntable 14 or change the measuring position, record the measurement data, and complete the defect detection of different positions on the blade surface.

[0048] The specific embodiments described in this article are only examples to illustrate the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A diamond cutting blade surface defect detection device, characterized in that Comprising: Base (1); Guide rail (2) fixed to the base (1); Slider (12) slidable along the guide rail (2), with a conical limit cone (10) provided on the slider (12) for inserting into the central hole of the blade to be measured (11) for positioning; Measuring mechanism fixed to the side of the guide rail (2), the measuring mechanism includes a micrometer and a measuring head, the micrometer is hinged and installed on the base (1) through a bracket and can swing back and forth to make the measuring head contact the surface of the blade to be measured (11); A locking and adjusting mechanism is provided between the slider (12) and the guide rail (2), and a locking device is provided between the measuring mechanism and the base (1); The measuring mechanism further includes a force control limit device for controlling the constant pressure of the measuring head contacting the blade surface.

2. The diamond cutting blade surface defect detection device according to claim 1, wherein The base (1) includes: Matrix platform: Made of high-rigidity cast iron after aging treatment, the upper surface is precision ground, and the flatness error does not exceed 0.02 mm / m; Guide rail (2) installation part: Fixedly connected to the matrix platform by bolts and fixedly connected to the guide rail (2); Adjustable shock absorption system: Composed of rubber vibration isolation pads to form a shock absorption layer, arranged at the four corners of the bottom of the matrix platform.

3. The diamond cutting blade surface defect detection device according to claim 2, characterized in that, The adjustable shock absorption system includes: Mechanical leveling mechanism, a lead screw is threadedly connected to the bottom end of the matrix platform, and an adjustment disk is fixed to the lower side of the lead screw; Shock absorption component, the bottom end of the lead screw is connected to the rubber vibration isolation pad through a bearing; Horizontal measurement component, including a circular spirit level, the aluminum alloy housing of the circular spirit level is adhesively fixed to the milled plane at the center of the matrix platform through epoxy resin glue, there is a concentric scale ring on the top of the housing of the circular spirit level, and the scale interval is 1 mm / m; the inside of the spirit level is filled with methyl silicone oil with a viscosity of 200 - 250 cSt, and the bubble diameter is 8 ± 0.5 mm.

4. The diamond cutting blade surface defect detection device according to claim 1, wherein, The slider (12) is slidably connected to the guide rail (2), the top end of the slider (12) is fixedly connected with an annular limit seat (13), the top end of the limit seat (13) is rotatably connected with an annular rotating seat (14) through a bearing, and a rubber anti-slip pad is fixed to the top end of the rotating seat (14); a limit rod (9) is fixedly connected to the top end of the slider (12), the limit rod (9) is located at the center of the limit seat (13), a through hole is opened in the center of the limit cone (10), and the limit cone (10) is limited to the blade to be measured (11) through the cooperation of the through hole and the limit rod (9).

5. The diamond cutting blade surface defect detection device according to claim 1, characterized in that The locking and adjusting mechanism includes a screw threadedly connected to the slider (12), and the screw is tightened to form a structure in which the slider (12) and the slide rail are fixed in position.

6. The diamond cutting blade surface defect detection device according to claim 1, wherein, The locking device includes a fixed seat (3) fixed to the base (1), a limit screw (16) is provided at the side end of the fixed seat (3), a bottom swing sleeve (15) that can rotate back and forth is sleeved on the outer periphery of the limit screw (16), and a limit nut (17) for fixing the bottom swing sleeve (15) is threadedly connected to the end of the limit screw (16); The bottom swing sleeve (15) is fixedly connected with a bottom swing rod (4), a vertical movement sleeve (5) is slidably connected to the outer periphery of the bottom swing rod (4), and a locking screw (18) for fixing the vertical movement sleeve (5) and the bottom swing rod (4) is threadedly connected to the side end of the vertical movement sleeve (5); A rotatable control screw (19) is sleeved on the side end of the vertical moving sleeve (5). The head end of the control screw (19) is fixedly connected with a top swing rod (6), and the tail end of the control screw (19) is threadedly connected with a control nut (20). An insertion sleeve (7) is arranged at the end of the top swing rod (6). The insertion sleeve (7) cooperates with the lower side of the micrometer (8). A stop screw (21) for positioning the micrometer and the insertion sleeve (7) is threadedly connected inward on the outer side of the insertion sleeve (7).

7. The diamond cutting blade surface defect detection device according to claim 6, characterized in that, The force control limiting device includes: Spring pressure adjustment mechanism: A compression spring is arranged between the bottom swing rod (4) and the vertical moving sleeve (5). The two ends of the spring respectively press against the annular boss of the bottom swing rod (4) and the end face of the vertical moving sleeve (5). An adjustment spring is sleeved on the control screw (19), and this spring is located between the top swing rod (6) and the control nut (20). An elastic washer is arranged at the end of the locking screw (18), and the washer is in elastic contact with the surface of the bottom swing rod (4). Force feedback mechanism: A strain force sensor is arranged on the inner wall of the insertion sleeve (7), and the sensor fits against the lower surface of the micrometer. The signal wire of the sensor is led out along the internal channel of the top swing rod (6) and is connected to a force value display fixed on the fixed seat (3). Linkage limiting structure: The swinging range of the bottom swing sleeve (15) is limited by a limit nut (17) on the limit screw (16). The sliding stroke of the vertical moving sleeve (5) is displayed through the scale marks on the bottom swing rod (4). The rotation angle of the control screw (19) is indicated by the angle scale on the side of the top swing rod (6).

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