Thread machining grinder and method integrating grinding, detection and laser dressing

Abstract

This invention discloses a thread-machining grinding machine and method integrating grinding, inspection, and laser dressing. It includes a mounting platform on which a workpiece spindle is movably mounted. The mounting platform also movably houses a clamping device, a laser dressing device, and a grinding wheel spindle. A grinding wheel is mounted on the grinding wheel spindle, and its movement direction on the mounting platform is perpendicular to the movement direction of the workpiece spindle. The clamping device can adapt to the needs of removing or clamping workpieces at different angles. The workpiece spindle moves radially along the workpiece, thereby achieving the engagement of the workpiece with the dressed grinding wheel. The laser dressing device includes a radial laser emitter and a tangential laser emitter, which are incident radially and tangentially from the grinding wheel, respectively, to dress the sharpness of the grinding wheel, enabling it to grind the workpiece to different roughnesses. This invention solves the problems of existing grinding machines being unable to perform complete process machining and unable to complete grinding with different roughnesses.

Description

Technical Field

[0001] This invention belongs to the field of grinding machine technology, specifically relating to a thread processing grinding machine and method that integrates grinding, inspection and laser dressing. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] Integrated grinding machines are precision machining tools capable of performing multiple processes such as grinding, inspection, and wheel dressing on a single machine. However, with the rapid development of high-end manufacturing, increasingly higher demands are being placed on the machining accuracy, surface quality, and production efficiency of thread transmission components. As the core process of precision thread machining, the level of process integration in thread grinding directly affects the final accuracy and manufacturing cost of the parts.

[0004] Regarding the integrated design of thread grinding machines, existing technologies disclose an inverted internal thread grinding machine that uses an inverted clamping device to grip and process parts; they also disclose an internal thread grinding machine equipped with two grinding mechanisms that can simultaneously grind internal threads along the centerline of a pair of grinding rods while shaft-like parts are driven to rotate by a support mechanism; and they also disclose a multi-functional intelligent thread grinding machine whose machine bed is equipped with a multi-functional device that can complete thread grinding, rake angle machining, oil groove machining, external cylindrical grinding, and passivation machining, realizing the centralized processing of multiple processes.

[0005] However, current thread grinding machines are still mainly focused on external thread grinding or processing of specific types of parts. Their functions are relatively simple, making it difficult to integrate thread grinding, thread inspection, grinding wheel condition monitoring and grinding wheel dressing into a single machine. For small-diameter long suspension grinding wheels necessary for thread grinding, contact dressing can easily cause bending and vibration of the grinding wheel rod, making it difficult to guarantee dressing accuracy and accurate reproduction of the grinding wheel profile. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a thread-machining grinding machine and method that integrates grinding, inspection, and laser dressing, solving the problems that existing grinding machines cannot perform complete processing steps and cannot complete grinding with different surface roughness.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution: In a first aspect, the present invention provides a thread-processing grinding machine integrating grinding, inspection, and laser dressing, comprising a mounting platform on which a workpiece spindle is movably mounted; a clamping device, a laser dressing device, and a grinding wheel spindle are also movably mounted on the mounting platform, wherein a grinding wheel is mounted on the grinding wheel spindle, and the movement direction of the grinding wheel spindle on the mounting platform is perpendicular to the movement direction of the workpiece spindle; the clamping device is adaptable to the needs of removing or clamping workpieces at different angles; the movement direction of the workpiece spindle is along the radial direction of the workpiece, thereby realizing the engagement of the workpiece with the dressed grinding wheel; the laser dressing device includes a radial laser emitter and a tangential laser emitter, which are incident from the radial and tangential directions of the grinding wheel, respectively, to dress the sharpness of the grinding wheel, enabling the grinding wheel to grind the workpiece to different roughnesses.

[0008] As a further implementation, the mounting platform is provided with multiple guide grooves, in which a sliding tray and a spindle mounting tray are installed. The sliding tray and the spindle mounting tray are driven by a motor to move within the guide grooves. The bottom of the sliding tray is provided with a steering auxiliary wheel to facilitate the sliding tray moving closer to or away from the axis of the grinding wheel spindle along the guide rail.

[0009] As a further implementation, the installation platform is also equipped with a micro-lubrication device, a dust collection device, a workpiece inspection device, and an acoustic emission processing device; the clamping device, laser trimming device, workpiece inspection device, micro-lubrication device, dust collection device, and acoustic emission processing device are all mounted on the sliding tray by fasteners and are respectively arranged on both sides of the workpiece.

[0010] As a further implementation, both the workpiece spindle and the grinding wheel spindle are mounted on the spindle mounting tray using fasteners.

[0011] As a further implementation, the grinding wheel spindle is equipped with a chuck that holds a slender rod for clamping the grinding wheel, and an acoustic emission sensor is installed inside the grinding wheel spindle.

[0012] As a further implementation, the clamping device includes a clamp, a motor connector, a vertical arm, a mounting base, a rotary motor, four corner fasteners, a rotary motor, a drive motor, a tilting arm, and a rotating component. The mounting base is mounted on a sliding tray using fasteners. The rotary motor and the vertical arm are pin-connected to the mounting base via the four corner fasteners. The rotary motor is built into the mounting base, and the vertical arm is located on top of the mounting base and is driven by the rotary motor. The vertical arm has a built-in rotary motor and is pin-connected to the tilting arm via the four corner fasteners, and is driven by the rotary motor. The tilting arm has a built-in motor connector, which is fixed to the drive motor via fasteners. The drive motor and the rotating component are pin-connected via the four corner fasteners, and the rotation of the clamp is achieved by the drive motor. The clamp and the rotating component are pin-connected.

[0013] As a further implementation, the laser dressing device includes a radial laser emitter and a tangential laser emitter for dressing the grinding wheel, a height adjuster, and a fixed base; the fixed base is connected to a sliding tray by bolts; the height adjuster is provided on the fixed base to adjust the height of the laser dressing device; the radial laser emitter and the tangential laser emitter are connected to an operation display screen.

[0014] As a further implementation, the micro-lubrication device includes a spray barrel fixed on a sliding tray, the spray barrel being provided with a nozzle with a flexible tube.

[0015] As a further implementation, the workpiece inspection device includes an automatic tightening device mounted on a sliding tray, and a thread plug gauge or thread micrometer mounted on the automatic tightening device.

[0016] Secondly, the present invention also provides a working method for a thread-machining grinding machine that integrates grinding, inspection, and laser dressing, comprising the following steps: The clamping device is controlled to clamp the workpiece blank, and the tool is precisely set according to the coordinates of the workpiece spindle and the grinding wheel spindle on the operation display screen. After determining the machining origin and starting path, and completing the tool setting, the grinding wheel spindle rotates and feeds, driving the grinding wheel to perform preliminary rough grinding on the workpiece, quickly removing most of the machining allowance. After rough grinding is completed, the workpiece is inspected on the machine tool using a workpiece inspection device. If the workpiece quality is qualified, semi-finish grinding is performed; if the workpiece quality is unqualified, rough grinding is performed again after adjusting the grinding parameters. Based on the signal from the acoustic emission processing device, it is determined whether the grinding wheel needs to be dressed. If dressing is not required, semi-finish grinding is performed directly. Semi-finish grinding reduces the machining allowance, and the workpiece quality is re-inspected after semi-finish grinding. If it fails, it is manually inspected to determine if it is a scrap part. If yes, the scrap part is removed and the blank is re-clamped. If no, semi-finish grinding is performed again. After passing the quality inspection, finish grinding is performed. After finish grinding, the workpiece is finally inspected. Workpieces that fail are manually inspected to determine if they are scrap parts. If scrap is not required, semi-finish grinding is performed again. Workpieces that pass the finish grinding can be removed, completing the processing of the finished threaded workpiece.

[0017] Compared with the prior art, the advantages and positive effects of this invention are: This invention integrates all processes of thread grinding into one unit, enabling rough grinding, semi-finish grinding, and finish grinding of internal and external threads to be completed on the same machine. This design not only reduces machining errors but also significantly reduces reliance on highly skilled operators. The clamping device can clamp workpieces of different diameters, facilitating adjustments to clamping angles, heights, and workpiece quality inspection. The laser dressing device on the grinding machine is equipped with both radial and tangential laser emitters, allowing for dressing of different abrasive grains during wheel dressing. The adjustable laser beam is more suitable for dressing small-diameter, long-bar double-bevel grinding wheels, and radial and tangential dressing can be performed simultaneously when necessary, improving machining efficiency.

[0018] This invention integrates the thread grinding process, eliminating the need for repeated clamping of semi-finished workpieces between multiple machines. This significantly reduces the risk of bumps, scratches, or deformation during handling, effectively improving machining accuracy. Furthermore, the entire machining process can be completed with just one fixture system, eliminating the need to design and manufacture fixtures separately for each process, thus significantly reducing machining costs. Attached Figure Description

[0019] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0020] Figure 1 This is an isometric view of the thread-machining grinding machine of the present invention; Figure 2 This is a diagram showing the distribution of various components of the thread-processing grinding machine of the present invention; Figure 3 This is a structural diagram of the workpiece spindle of the present invention; Figure 4 This is a structural diagram of the clamping device of the present invention; Figure 5 This is an exploded view of the clamping device of the present invention; Figure 6 This is a structural diagram of the fixture of the present invention; Figure 7 This is a structural diagram of the micro-lubrication device of the present invention; Figure 8 This is a structural diagram of the laser trimming device of the present invention; Figure 9 This is a schematic diagram illustrating the laser trimming principle of the present invention. Figure 10 This is a diagram showing the distribution of the fixing bolts in this invention; Figure 11 This is a cross-sectional view of the present invention (AA section). Figure 12 This is an assembly diagram of the sliding tray and mounting platform of the present invention; Figure 13 This is a structural diagram of the grinding wheel spindle of the present invention; Figure 14 This is a structural diagram of the workpiece inspection device of the present invention; Figure 15 This is a structural diagram of the thread plug gauge specific to this invention; Figure 16 This is a schematic diagram of the operation display screen of the present invention; Figure 17 This is a structural diagram of the thread micrometer of the present invention; Figure 18 This is a flowchart of the thread grinding process of the present invention.

[0021] In the diagram: 1. Dust cover; 2. Operation display screen; 3. Grinding machine base frame; 4. Workpiece spindle; 5. Clamping device; 501. Fixture; 502. Motor connector; 503. Vertical arm; 504. Mounting chassis; 505. Rotary motor; 506. Four-corner connector; 507. Rotary motor; 508. Drive motor; 509. Tilt arm; 510. Rotating component; 6. Micro-lubrication device; 601. Nozzle; 602. Spray can; 7. Laser dressing device 701. Height adjuster; 702. Radial laser emitter; 703. Tangential laser emitter; 704. Fixed base; 8. Grinding wheel spindle; 9. Workpiece inspection device; 901. Automatic tightening device; 902. Thread plug gauge; 10. Dust collection device; 11. Acoustic emission processing device; 12. Mounting platform; 1201. Sliding tray; 1202. Steering auxiliary wheel; 1203. Spindle mounting tray; 13. Grinding wheel; 14. Thread micrometer. Detailed Implementation

[0022] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0023] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. Example 1 This embodiment discloses a thread-machining grinding machine that integrates grinding, inspection, and laser dressing. Figures 1-18 As shown, it includes an installation platform 12, such as Figure 1 As shown, the lower part of the mounting platform 12 is provided with a grinding machine base frame 3, and the upper part is provided with a dust cover 1. The dust cover 1 is provided with an operation display screen 2.

[0024] like Figure 2 As shown, a workpiece spindle 4 is movably mounted on the mounting platform 12; a clamping device 5, a laser dressing device 7, and a grinding wheel spindle 8 are also movably mounted on the mounting platform 12. A grinding wheel 13 is mounted on the grinding wheel spindle 8, and its movement direction on the mounting platform 12 is perpendicular to the movement direction of the workpiece spindle 4, thereby enabling the grinding wheel 13 on the grinding wheel spindle 8 to grind the threads on the workpiece while moving; the clamping device 5 can adapt to the needs of removing or clamping workpieces at different angles; the movement direction of the workpiece spindle 4 is along the radial direction of the workpiece, thereby enabling the workpiece to cooperate with the dressed grinding wheel 13; the laser dressing device 7 includes a radial laser emitter 702 and a tangential laser emitter 703, which are incident from the radial and tangential directions of the grinding wheel 13, respectively, to dress the sharpness of the grinding wheel 13, so that the grinding wheel 13 can grind the workpiece with different roughnesses.

[0025] As a further implementation, the mounting platform 12 is provided with multiple guide grooves, in which a sliding tray 1201 and a spindle mounting tray 1203 are installed. The sliding tray 1201 and the spindle mounting tray 1203 are driven by a motor to move within the guide grooves. The bottom of the sliding tray 1201 is provided with a steering auxiliary wheel 1202 to facilitate the sliding tray 1201 moving closer to or further away from the axis of the grinding wheel spindle 8 along the guide rail. Figure 12 As shown.

[0026] It is understood that the guide grooves for mounting the sliding tray 1201 are two arranged near the edge of the mounting platform 12 and along the length of the mounting platform 12, with two grooves at each edge. An adjustment groove is vertically arranged between the two guide grooves, and the cross-sectional shape of the adjustment groove is the same as that of the guide groove. The adjustment groove is used for the sliding tray 1201 to move towards the center of the mounting platform and get closer to the grinding wheel spindle 8, thereby realizing the grinding of the grinding wheel 13, as well as getting close to the workpiece for grinding lubrication, dust extraction, and collection of sound wave signals. The steering auxiliary wheel 1202 is used to make the sliding tray 1201 turn more smoothly from the guide groove to the adjustment groove. The connection between the guide groove and the adjustment groove is made with a large arc transition treatment.

[0027] like Figure 2 As shown, as a further implementation, the mounting platform 12 is also equipped with a micro-lubrication device 6, a dust collection device 10, a workpiece detection device 9, and an acoustic emission processing device 11; the clamping device 5, the laser trimming device 7, the workpiece detection device 9, the micro-lubrication device 6, the dust collection device 10, and the acoustic emission processing device 11 are all mounted on the sliding tray 1201 by fasteners and are respectively arranged on both sides of the workpiece.

[0028] Workpiece spindle 4 Figure 3As shown, the grinding wheel spindle 8 and the spindle mounting tray 1203 are as follows: Figure 13 As shown, both the workpiece spindle 4 and the grinding wheel spindle 8 are mounted on the spindle mounting tray 1203 using fasteners to allow movement of the workpiece spindle 4 and the grinding wheel spindle 8 during grinding, thereby meeting the needs of different workpieces and internal and external thread processing and improving the versatility of the grinding machine. Furthermore, during processing, the workpiece spindle 4 and the grinding wheel spindle 8 have the greatest strength. Using the sliding tray 1201, which fixes other processing devices, to fix the workpiece spindle 4 and the grinding wheel spindle 8 could pose safety hazards. Therefore, the spindle mounting tray 1203 is used to maximize spindle fixation and reduce spindle vibration, thereby improving processing accuracy. The fit between the spindle mounting tray 1203 and the guide groove of the mounting platform 12 is the same as that of the sliding tray 1201.

[0029] The workpiece spindle 4 has a built-in three-jaw chuck for fixing and clamping the workpiece; compared with a four-jaw chuck or collet, the three-jaw chuck is more suitable for cylindrical workpieces and can withstand stronger loads; the workpiece spindle 4 cooperates with the spindle mounting tray 1203 and moves horizontally left and right through the guide groove on the mounting platform 12 to facilitate external thread machining.

[0030] The length direction of the guide groove of the spindle mounting tray 1203 of the workpiece spindle 4 is parallel to the width direction of the mounting platform 12, and the length direction of the guide groove of the spindle mounting tray 1203 of the grinding wheel spindle 8 is parallel to the length direction of the mounting platform 12. This arrangement can process the internal and external threads of the workpiece and can also accommodate workpieces of any length, but the length of the workpiece should be less than the maximum distance between the workpiece spindle 4 and the grinding wheel spindle 8.

[0031] As a further implementation, a chuck is installed on the grinding wheel spindle 8 to securely clamp the slender rod of the grinding wheel 13, thereby achieving stable and firm clamping of the slender rod of the grinding wheel 13. An acoustic emission sensor is installed inside the grinding wheel spindle 8. The acoustic emission sensor converts the vibration of the grinding wheel 13 during grinding into an electrical signal and transmits it to the acoustic emission processing device 11 for analysis. When the grinding wheel 13 needs dressing, its abnormal vibration can be sent to the operation display screen 2 in this way, reminding the operator to dress the grinding wheel 13 in a timely manner.

[0032] like Figures 4-6As shown, the clamping device 5 includes a clamp 501, a motor connector 502, a vertical arm 503, a mounting base 504, a rotary motor 505, four corner fasteners, a rotary motor 507, a drive motor 508, an inclined arm 509, and a rotating component 510. The mounting base 504 is mounted on the sliding tray 1201 with fasteners. The rotary motor 505 and the vertical arm 503 are connected to the mounting base 504 by pins through the four corner fasteners. The rotary motor 505 is built into the mounting base 504, and the vertical arm 503 is located on the upper part of the mounting base 504 and connected to the rotary motor 509 via the rotary motor 501. Driven by motor 5, the clamping device 5 rotates; the vertical arm 503 has a built-in rotary motor 507 and is pin-connected to the tilting arm 509 through four corner connectors 506. Driven by the rotary motor 507, the tilting arm 509 can swing up and down; the tilting arm 509 has a built-in motor connector 502, which is fixed to the drive motor 508 by fasteners; the drive motor 508 and the rotating part 510 are pin-connected through four corner connectors 506. Driven by the drive motor 508, the clamp 501 rotates; the clamp 501 and the rotating part 510 are pin-connected.

[0033] To enable flexible adjustment of the clamping device 5 for different workpieces and different heights, the clamping device 5 is equipped with a rotary motor 505, a rotary motor 507, and a drive motor 508, which can realize multi-degree-of-freedom movement of the fixture 501 in the up, down, left, and right directions and rotation. The fixture 501 is set with a gear meshing and four-bar linkage system, which has higher repeatability and positioning accuracy. Combined with the data stored during mass production, it can effectively reduce positioning and installation errors. The clamping knife of the fixture 501 is equipped with an arc-shaped cutting edge, which can avoid violent clamping of cylindrical workpieces, reduce workpiece damage and deformation, and the angle of the clamping knife can be flexibly changed to facilitate clamping workpieces of different diameters.

[0034] like Figures 8-11 As shown. In a further implementation, the laser dressing device 7 includes a radial laser emitter 702 and a tangential laser emitter 703 for dressing the grinding wheel 13, a height adjuster 701, and a fixed base 704; the fixed base 704 is connected to the sliding tray 1201 by bolts; the height adjuster 701 is provided on the fixed base 704 to adjust the height of the laser dressing device 7 to adapt to different dressing needs; the radial laser emitter 702 and the tangential laser emitter 703 are connected to the operation display screen 2, allowing different dressing operations to be performed according to the operator's instructions.

[0035] When the radial laser emitter 702 is incident, the binder has a lower ablation threshold than the abrasive grains and is ablated and removed by the laser first, so that the abrasive grains cannot be removed by the laser or the amount removed by the laser is small. The abrasive grains protrude from the binder, which has a certain sharpening effect. When the tangential laser emitter 703 is incident, the laser scans back and forth on the surface of the grinding wheel 13. The laser beam only contacts the abrasive grains. Therefore, when the laser is incident tangentially, the abrasive grains that protrude more can be removed. By selecting different laser cutting depths, the residual height of the abrasive grains can also be adjusted, which can play the role of shaping the grinding wheel 13.

[0036] Laser dressing technology can achieve non-contact dressing during the processing, and the dressing tool not only does not suffer wear and tear but also has a long lifespan during the dressing of the grinding wheel 13.

[0037] like Figure 7 As shown, the micro-lubrication device 6 includes a spray tank 602 fixed on a sliding tray 1201. The spray tank 602 is provided with a nozzle 601 with a flexible tube. The spray tank 602 can store grinding fluid and provide a pressurization function, so that the grinding fluid can be sprayed out evenly and stably from the nozzle 601 with a flexible tube. The flexible tube on the nozzle 601 with a flexible tube can be stretched or shortened as needed to adapt to the needs of actual engineering.

[0038] Traditional casting-type cooling may cause "thermal shock" to the cutting edge of the grinding wheel 13 at high temperatures due to the instantaneous vaporization of the liquid, resulting in micro-cracks in the grinding wheel 13. However, the micro-lubrication device 6 provides finer and more uniform lubrication, which can control the temperature more stably, avoid thermal damage, and extend the life of the grinding wheel 13. In addition, the micro-lubrication device 6 uses fresh lubricant each time, which can avoid the secondary scratches that may be caused to the workpiece surface by the introduction of tiny abrasive particles during the recycling of traditional cutting fluid, thus improving the quality of thread grinding.

[0039] like Figure 14 As shown, the workpiece inspection device 9 includes an automatic tightening device 901 mounted on a sliding tray 1201, and a thread plug gauge 902 or a thread micrometer 14 mounted on the automatic tightening device 901.

[0040] The workpiece inspection device 9 is equipped with an automatic tightening device 901, which has two mounting holes at different heights to accommodate workpieces of varying heights. Compared to other thread inspection methods, using a thread plug gauge 902 for internal thread inspection of workpieces offers higher accuracy, easier operation, suitability for mass production needs, and simpler equipment at a lower cost.

[0041] like Figure 16As shown, the operation display screen 2 can record processing requirements and production progress in real time, reducing human error; it can also compare the displacement error between the grinding wheel 13 and the workpiece in real time, and make manual adjustments through the display screen, improving the safety of operators; it can also manually adjust the processing steps, improving processing efficiency while lowering the operating threshold for operators; to meet the needs of mass production, the system in the operation display screen can also store processing data, which can be called up by the operator with one click during mass production, improving processing efficiency and processing accuracy.

[0042] like Figure 15 As shown, the 902 thread plug gauge can only inspect the quality of internal threads. When grinding external threads on a grinding machine, to inspect the quality of the external threads, it can be manually replaced with a 14-inch thread micrometer. Figure 17 As shown, it can directly measure the thread pitch diameter, the reading is intuitive and the operation is convenient. Its paired probes fit well with the thread profile and can effectively reflect the actual pitch diameter error. It is suitable for batch inspection. Its fixing method is the same as that of the workpiece inspection device 9.

[0043] The lower part of the mounting platform 12 is equipped with a grinding machine base frame 3, and the upper part is equipped with a dust cover 1. The dust cover 1 is equipped with an operation display screen 2. The operation display screen 2 can record processing requirements and production progress in real time, reducing human error; it can also compare the displacement error between the grinding wheel 13 and the workpiece in real time, and make manual adjustments through the display screen, improving the safety of operators; it can also manually adjust the processing steps, improving processing efficiency while lowering the operating threshold for operators; to meet the needs of mass production, the system can store processing data, which can be recalled by the operator with one click during mass production, improving processing efficiency and processing accuracy.

[0044] Example 2 This embodiment discloses a working method for a thread-machining grinding machine that integrates grinding, inspection, and laser dressing. Figure 18 As shown, it includes the following steps: The clamping device 5 is controlled to clamp the workpiece blank, and the tool is precisely set according to the coordinates of the workpiece spindle 4 and the grinding wheel spindle 8 on the operation display screen 2. After determining the machining origin and machining start path, and completing the tool setting, the grinding wheel spindle 8 rotates and feeds, driving the grinding wheel 13 to perform preliminary rough grinding on the workpiece, quickly removing most of the machining allowance; After rough grinding is completed, the workpiece is inspected on the machine tool using the workpiece inspection device 9. If the workpiece quality is qualified, semi-finish grinding is performed; if the workpiece quality is unqualified, rough grinding is performed again after adjusting the grinding parameters. Based on the signal from the acoustic emission processing device 11, it is determined whether the grinding wheel 13 needs to be dressed. If dressing is not required, semi-finish grinding is performed directly. Semi-finish grinding reduces the machining allowance, and the workpiece quality is re-inspected after semi-finish grinding. If it is not up to standard, it is manually inspected to determine whether it is a scrap part. If so, the scrap part is removed and the blank is re-clamped. If not, semi-finish grinding is performed again. After the quality inspection is passed, finish grinding is performed. Finish grinding provides more detailed workpiece processing. After the finish grinding is completed, the workpiece can be finally inspected. Workpieces that are not up to standard are manually inspected to determine whether they are scrap parts. If scrap is not required, semi-finish grinding is performed again. Workpieces that are up to standard after finish grinding can be removed, completing the processing of the finished threaded workpiece.

[0045] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A thread-machining grinding machine integrating grinding, inspection, and laser dressing, characterized in that, The device includes an installation platform on which a workpiece spindle is movably mounted. The installation platform also includes a clamping device, a laser dressing device, and a grinding wheel spindle. A grinding wheel is mounted on the grinding wheel spindle, and its movement direction on the installation platform is perpendicular to the movement direction of the workpiece spindle. The clamping device can adapt to the need for removing or clamping workpieces at different angles. The workpiece spindle moves radially along the workpiece, thereby enabling the workpiece to engage with the dressed grinding wheel. The laser dressing device includes a radial laser emitter and a tangential laser emitter, which are incident radially and tangentially from the grinding wheel, respectively, to dress the sharpness of the grinding wheel, allowing it to grind the workpiece to different roughnesses.

2. The thread-cutting grinding machine integrating grinding, inspection, and laser dressing as described in claim 1, characterized in that, The mounting platform is provided with multiple guide grooves, in which a sliding tray and a spindle mounting tray are installed. The sliding tray and the spindle mounting tray are driven by a motor to move in the guide grooves. The bottom of the sliding tray is provided with a steering auxiliary wheel to facilitate the sliding tray to move closer to or away from the axis of the grinding wheel spindle along the guide rail.

3. The thread-cutting grinding machine integrating grinding, inspection, and laser dressing as described in claim 2, characterized in that, The installation platform is also equipped with a micro-lubrication device, a dust collection device, a workpiece inspection device, and an acoustic emission processing device; the clamping device, laser trimming device, workpiece inspection device, micro-lubrication device, dust collection device, and acoustic emission processing device are all mounted on the sliding tray by fasteners and are respectively arranged on both sides of the workpiece.

4. The thread-cutting grinding machine integrating grinding, inspection, and laser dressing as described in claim 3, characterized in that, Both the workpiece spindle and the grinding wheel spindle are mounted on the spindle mounting tray using fasteners.

5. The thread-cutting grinding machine integrating grinding, inspection, and laser dressing as described in claim 4, characterized in that, The grinding wheel spindle is equipped with a chuck that holds a slender rod for clamping the grinding wheel, and an acoustic emission sensor is installed inside the grinding wheel spindle.

6. The thread-cutting grinding machine integrating grinding, inspection, and laser dressing as described in claim 4, characterized in that, The clamping device includes a clamp, a motor connector, a vertical arm, a mounting base, a rotary motor, four corner fasteners, a rotary motor, a drive motor, a tilting arm, and a rotating component. The mounting base is mounted on a sliding tray using fasteners. The rotary motor and the vertical arm are pin-connected to the mounting base via the four corner fasteners. The rotary motor is built into the mounting base, and the vertical arm is located on top of the mounting base and is driven by the rotary motor. The vertical arm has a built-in rotary motor and is pin-connected to the tilting arm via the four corner fasteners, and is driven by the rotary motor. The tilting arm has a built-in motor connector, which is fixed to the drive motor via fasteners. The drive motor and the rotating component are pin-connected via the four corner fasteners, and the rotation of the clamp is achieved by the drive motor. The clamp and the rotating component are pin-connected.

7. The thread-cutting grinding machine integrating grinding, inspection, and laser dressing as described in claim 4, characterized in that, The laser dressing device includes a radial laser emitter and a tangential laser emitter for dressing the grinding wheel, a height adjuster, and a fixed base; the fixed base is connected to a sliding tray by bolts; the height adjuster is provided on the fixed base to adjust the height of the laser dressing device; the radial laser emitter and the tangential laser emitter are connected to an operation display screen.

8. The thread-cutting grinding machine integrating grinding, inspection, and laser dressing as described in claim 4, characterized in that, The micro-lubrication device includes a spray barrel fixed on a sliding tray, and the spray barrel is equipped with a nozzle with a flexible tube.

9. A thread-cutting grinding machine integrating grinding, inspection, and laser dressing as described in claim 4, characterized in that, The workpiece inspection device includes an automatic tightening device mounted on a sliding tray, and a thread plug gauge or thread micrometer mounted on the automatic tightening device.

10. A method for operating a thread-machining grinding machine integrating grinding, inspection, and laser dressing as described in any one of claims 1-9, characterized in that, Includes the following steps: The clamping device is controlled to clamp the workpiece blank, and the tool is precisely set according to the coordinates of the workpiece spindle and the grinding wheel spindle on the operation display screen. After determining the machining origin and starting path, and completing the tool setting, the grinding wheel spindle rotates and feeds, driving the grinding wheel to perform preliminary rough grinding on the workpiece, quickly removing most of the machining allowance. After rough grinding is completed, the workpiece is inspected on the machine tool using a workpiece inspection device. If the workpiece passes the quality inspection, semi-fine grinding is performed. If the workpiece quality is not up to standard, rough grinding should be performed again after adjusting the grinding parameters; Based on the signal from the acoustic emission processing device, it is determined whether the grinding wheel needs to be dressed. If dressing is not required, semi-finish grinding is performed directly. The machining allowance is reduced through semi-finish grinding, and the workpiece quality is re-inspected after semi-finish grinding. If the quality inspection is qualified, finish grinding is performed. After finish grinding, the workpiece is finally inspected. If the finish-ground workpiece is qualified, it can be removed, and the finished threaded workpiece processing is completed.

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