Numerical control machine tool for metal nut machining

Abstract

The invention relates to the technical field of nut numerical control machine tools, and discloses a metal nut machining numerical control machine tool which comprises a numerical control machine tool base, the top of the numerical control machine tool base is fixedly connected with a nut motor, the interior of the nut motor is fixedly connected with a clamp driving motor, and a drilling motor box is arranged outside the clamp driving motor; a rotating rod clamping nut is movably connected to the interior of the drilling motor box, a drilling rotating shaft is movably connected to the interior of the rotating rod clamping nut, a grinding rotating shaft is movably connected to the interior of the rotating rod clamping nut, a correcting rotating shaft is movably connected to the interior of the rotating rod clamping nut, and a threaded grinding rod is arranged outside a clamp driving motor; a waste discharging groove is formed in the bottom of the threaded polishing rod. The driving device at the bottom of the left case drives the whole to move horizontally, the front-back distance between the threaded grinding rod and a workpiece is adjusted, an internal gear set drives the left gear rack to stretch out and draw back, and transverse adjustment of the grinding fixing block is achieved so as to accurately control the grinding area.

Description

Technical Field

[0001] This invention relates to the field of CNC machine tools for nut processing, and more specifically to a CNC machine tool for machining metal nuts. Background Technology

[0002] A CNC machine tool for machining metal nuts is a core piece of equipment used for high-precision, automated machining of metal nuts. It uses a digital control system to drive cutting tools to perform operations such as cutting and tapping on metal blanks, completing the machining of features such as threads, chamfers, and end faces in a single operation. Its purpose is to efficiently manufacture standard-sized, tightly structured metal nuts, significantly improving thread accuracy and consistency, avoiding errors easily encountered in traditional machining, and meeting the mass production needs of high-strength, high-reliability fasteners in the automotive, aerospace, and precision instrument industries. In daily use, the high-speed rotation of the nut blank on CNC machine tools for machining metal nuts creates reverse resistance on the cutting tool. If the cutting tool lacks a stable limiting or buffering structure, this reverse force can easily cause the cutting tool to deviate. This deviation not only causes machining defects such as irregular thread profile and pitch deviation, reducing the yield rate of nut products, but also may cause excessive friction between the tool and the blank due to the deviation in the tool position, which can aggravate tool wear, shorten its service life, and increase tool replacement costs. At the same time, the operator needs to frequently stop the machine to check the tool position and adjust and calibrate it, which not only interrupts the machining process and reduces production efficiency, but also requires extra effort to control accuracy and avoid problems in batch processing. This instability in machining caused by force deviation greatly weakens the automation advantages of CNC machine tools and affects the operator's experience of using the equipment's precision and convenience. In daily use, CNC machine tools for machining metal nuts require the forward and reverse rotation of the motor to switch between clamping and loosening. The control logic is complex and the response is slow. Poor operation synchronization can easily lead to unstable clamping. During machining, the nut is easily affected by the reverse force during cutting, causing vibration and displacement, which directly leads to a decrease in thread machining accuracy and problems such as irregular tooth profile and pitch deviation. At the same time, the equipment has poor adaptability to different nut specifications. When changing the machining specifications, it is necessary to frequently disassemble and replace the fixture components, which not only increases the cost of manual intervention and adjustment time, but also reduces the stability of equipment operation due to frequent component replacement, indirectly reducing the machining efficiency. In addition, it is difficult to ensure consistency in manually adjusting the clamping force. Insufficient clamping force or over-clamping can easily cause nut deformation or machining deviation, which further affects the product qualification rate and the operator's user experience. Summary of the Invention

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides a CNC machine tool for machining metal nuts to solve the problems existing in the background art.

[0004] The present invention provides the following technical solution: a CNC machine tool for processing metal nuts, comprising a CNC machine tool base, a nut motor fixedly connected to the top of the CNC machine tool base, a fixture drive motor fixedly connected inside the nut motor, a drilling motor housing provided outside the fixture drive motor, a rotating rod holding a nut movably connected inside the drilling motor housing, a drilling shaft movably connected inside the rotating rod holding the nut, a grinding shaft movably connected inside the rotating rod holding the nut, a correction shaft movably connected inside the rotating rod holding the nut, and a thread grinding rod provided outside the fixture drive motor, with a waste discharge groove opened at the bottom of the thread grinding rod.

[0005] Furthermore, the nut motor has a metal protective cover that is movably fitted inside, and the bottom of the metal protective cover is movably connected to a cover sliding plate. A clamp drive motor is provided at the bottom of the metal protective cover.

[0006] Furthermore, the internal part of the clamp drive motor is movably connected to a motor turntable, the external part of the motor turntable is fixedly connected to a metal sleeve, the external part of the metal sleeve is movably connected to a clamping turntable, the external part of the clamping turntable is movably connected to a clamping movable block, the external part of the clamping movable block is fixedly connected to a clamp drive motor, and the internal part of the clamping movable block is movably connected to a nut movable block.

[0007] Furthermore, the motor turntable has a clamping threaded hole inside, the clamping threaded hole is movably engaged with a clamping nut inside, and the clamping nut is movably sleeved to clamp the turntable outside.

[0008] Furthermore, the movable block of the clamp is provided with a protrusion groove inside, the protrusion groove is movably fitted with a protrusion block inside, and the protrusion block is fixedly connected to a nut movable block outside.

[0009] Furthermore, a telescopic column is fixedly connected to the top of the drilling motor housing, a telescopic housing is movably connected to the top of the telescopic column, and a correction shaft is movably connected inside the telescopic housing.

[0010] Furthermore, the top of the CNC machine tool base is movably connected to the left machine housing, the left machine housing is movably engaged with the left gear rack inside, the left gear rack is fixedly connected to the outside of the grinding fixing block, the grinding fixing block is movably sleeved with the right gear rack inside, and the right gear rack is movably engaged with the right machine housing outside.

[0011] Furthermore, the grinding fixing block has a threaded grinding rod movably sleeved inside, the threaded grinding rod movably engages with a grinding rod bolt inside, the grinding fixing block has a grinding block bolt movably sleeved inside, and the bottom of the grinding block bolt is movably connected to the threaded grinding rod.

[0012] Furthermore, the threaded grinding rod is internally fixed to a blade mounting plate, the blade mounting plate is externally movably connected to an offset blade, and the offset blade is internally movably connected to a blade bolt.

[0013] Furthermore, a primary screen is movably connected inside the waste discharge trough, a conveyor belt is provided outside the primary screen, and a receiving box is provided at the bottom of the conveyor belt.

[0014] Furthermore, a secondary screen is provided at the bottom of the primary screen, and a waste liquid sedimentation tank is provided at the bottom of the secondary screen. A water pump is fixedly connected to the outside of the waste liquid sedimentation tank, a water pipe rack is fixedly connected to the outside of the water pump, and a plastic hose is fixedly connected to the outside of the water pipe rack.

[0015] The technical effects and advantages of this invention are as follows: 1. This invention uses a drive device at the bottom of the left housing to move the entire assembly horizontally, adjusting the distance between the threaded grinding rod and the workpiece. Its internal gear set drives the extension and retraction of the left gear rack, realizing the lateral adjustment of the grinding fixing block to precisely control the grinding area. At the same time, the internal gear transmission system of the right gear rack drives the extension and retraction of the right housing, allowing it to be precisely inserted into the grinding fixing block. The conductive properties of the right housing are used to connect the positive and negative copper plates in the groove to form a circuit path, controlling the extension and retraction switch of the right housing. This ensures precise adjustment, enhances the stability and load-bearing capacity of the grinding blade, and improves the automation and safety of the grinding operation.

[0016] 2. This invention uses a clamp-driven motor to drive the clamping turntable to rotate synchronously via the motor bearing, motor turntable, and metal sleeve. By utilizing the cooperation between the groove of the clamping turntable and the insert of the nut movable block, the nut is clamped when moving towards the near-center and loosened when moving towards the far-center. The unidirectional rotation of the motor can achieve automated clamping switching, which can firmly clamp the nut to prevent vibration and displacement, ensure processing accuracy, simplify control logic, reduce manual intervention, improve clamping accuracy and processing efficiency, and can also adapt to nuts of different specifications without frequent parts changes, thus expanding the applicability of the equipment and reducing adjustment costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the clamp drive motor structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the left and right chassis structures of the present invention.

[0020] Figure 4 This is a schematic diagram of the grinding fixing block structure of the present invention.

[0021] Figure 5 This is a schematic diagram of the thread grinding rod structure of the present invention.

[0022] Figure 6 This is a schematic diagram of the drilling motor box structure of the present invention.

[0023] Figure 7 This is a schematic diagram of the waste liquid sedimentation tank structure of the present invention.

[0024] The attached figures are labeled as follows: 1. CNC machine tool base; 2. Nut motor; 3. Fixture drive motor; 4. Drilling motor housing; 5. Rotary rod clamping nut; 6. Drilling shaft; 7. Grinding shaft; 8. Correction shaft; 9. Thread grinding rod; 10. Scrap discharge trough; 101. Metal protective cover; 102. Protective cover sliding plate; 103. Motor turntable; 104. Metal sleeve column; 105. Clamping turntable; 106. Fixture movable block; 107. Nut movable block; 201. Fixture threaded hole; 202. Fixture nut; 301. Protrusion slide groove; 302. 401. Raised block; 402. Left gear rack; 403. Grinding fixing block; 404. Right gear rack; 405. Right gear rack; 406. Grinding block bolt; 407. Blade mounting plate; 408. Offset blade; 409. Blade bolt; 410. Grinding rod bolt; 501. Telescopic column; 502. Telescopic gear box; 601. Primary screen; 602. Conveyor belt; 603. Receiving box; 604. Secondary screen; 605. Waste liquid sedimentation tank; 606. Water pump; 607. Water pipe rack; 608. Plastic hose. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The CNC machine tool for processing metal nuts involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Reference Figure 1-7This invention provides a CNC machine tool for machining metal nuts, including a CNC machine tool base 1. A nut motor 2 is fixedly connected to the top of the CNC machine tool base 1. A fixture drive motor 3 is fixedly connected inside the nut motor 2. A drilling motor housing 4 is provided outside the fixture drive motor 3. A rotating rod clamping nut 5 is movably connected inside the drilling motor housing 4. A drilling shaft 6 is movably connected inside the rotating rod clamping nut 5. A grinding shaft 7 is movably connected inside the rotating rod clamping nut 5. A correction shaft 8 is movably connected inside the rotating rod clamping nut 5. A thread grinding rod 9 is provided outside the fixture drive motor 3. A waste discharge groove 10 is opened at the bottom of the thread grinding rod 9 to facilitate the passage of waste material inside the nut motor 2. The clamping drive motor 3 controls the rotation of the clamped nut blank to achieve multi-angle processing. The drilling motor box 4 can clamp the nut 5 by rotating the external rotating rod, and switch between clamping the drilling shaft 6, grinding shaft 7 and correction shaft 8 respectively. The nut is then drilled, the inner wall of the drilled hole is ground, and the edge corners of the nut are corrected in sequence. Subsequently, the inner wall of the nut hole is threaded by the thread grinding rod 9. The metal waste generated in the whole process is discharged in a waste discharge trough 10. The multiple processing steps are integrated into one machine, which reduces the workpiece transfer time, improves the processing efficiency, and ensures the continuity of dimensional accuracy between each process, thereby improving the processing quality of the metal nut.

[0027] In a preferred embodiment, a metal protective cover 101 is movably sleeved inside the nut motor 2. The bottom of the metal protective cover 101 is movably connected to a cover sliding plate 102. A clamp drive motor 3 is provided at the bottom of the metal protective cover 101. This facilitates safe protection during the processing through the metal protective cover 101. Operators can control the protective cover to retract or unfold outside the clamp drive motor 3 by pulling the handle on the outside of the metal protective cover 101. When the equipment cuts, grinds, or performs other processing on the nut, the unfolded metal protective cover 101 can form a physical barrier, effectively blocking the splashing of metal chips generated during processing, avoiding safety hazards to operators, and reducing the contamination of surrounding parts of the equipment by chips. In addition, when the metal protective cover 101 moves, the cover sliding plate 102 connected to its bottom restricts the movement trajectory of the protective cover through a preset groove, ensuring that the protective cover always slides smoothly along a fixed path during the retraction or unfolding process, avoiding problems such as offset or jamming, and ensuring the reliable realization of the protective function and ease of operation.

[0028] In a preferred embodiment, the internal part of the clamp drive motor 3 is movably connected to the motor turntable 103, the external part of the motor turntable 103 is fixedly connected to the metal sleeve 104, the external part of the metal sleeve 104 is movably connected to the clamping turntable 105, the external part of the clamping turntable 105 is movably connected to the clamping turntable 105, the external part of the clamping turntable 106 is fixedly connected to the clamp drive motor 3, and the internal part of the clamping turntable 106 is movably connected to the nut turntable 107. This facilitates the rotation of the motor turntable 103 by the motor bearing inside the clamp drive motor 3, and the motor turntable 103 drives the clamping turntable 105 to rotate synchronously through the externally fixed metal sleeve 104. When the disc 105 rotates, the groove inside it will drive the movement of the insert pin welded to the nut movable block 107. When the insert pin in the groove moves towards the proximal end of the groove, the nut movable block 107 will simultaneously retract inward within the clamp movable block 106 to clamp and fix the nut. When the insert pin in the groove moves towards the distal end of the groove, the nut movable block 107 will expand outward to release the nut. The unidirectional rotation of the motor realizes the automatic switching of the clamping action, ensuring that the nut is firmly clamped during processing and avoiding positional displacement caused by vibration. At the same time, it simplifies the control logic, improves the accuracy and efficiency of the clamping operation, and adapts to the processing needs of nuts of different specifications.

[0029] In a preferred embodiment, the motor turntable 103 has a clamping threaded hole 201 inside, and a clamping nut 202 is movably engaged inside the clamping threaded hole 201. The clamping nut 202 is movably sleeved on the clamping turntable 105. This facilitates the stable fixation of the motor turntable 103 and the clamping turntable 105 through a threaded connection. When the clamping nut 202 is inserted into the clamping threaded hole 201 of the motor turntable 103, the clamping turntable 105 can be tightly fixed on the motor turntable 103 by the engagement of the threads, ensuring that the two maintain synchronous movement during rotation, avoiding relative displacement, and withstanding the torque and vibration during processing. It also facilitates quick disassembly and assembly when it is necessary to replace the clamping turntable 105 with different specifications. The component replacement can be completed by loosening or tightening the clamping nut 202, improving the convenience of equipment maintenance and process adjustment.

[0030] In a preferred embodiment, the movable clamp block 106 has a protrusion groove 301 inside, and a protrusion block 302 is movably sleeved inside the protrusion groove 301. The protrusion block 302 is fixedly connected to the nut movable block 107 outside. This facilitates the sliding engagement between the protrusion groove 301 inside the movable clamp block 106 and the protrusion block 302 outside the nut movable block 107. The protrusion block 302 is embedded in the protrusion groove 301 and can slide along the groove. On the one hand, it can accurately limit the movement direction of the nut movable block 107, ensuring that it can only perform clamping or loosening actions along a preset trajectory, thus ensuring clamping accuracy. On the other hand, the interlocking structure of the groove and the protrusion can effectively prevent the nut movable block 107 from falling off during movement, enhancing the stability and safety of the mechanism operation. This simplifies the guide structure and improves the reliability of the clamping mechanism, ensuring the precise and controllable clamping action during nut processing.

[0031] In a preferred embodiment, a telescopic column 501 is fixedly connected to the top of the drilling motor housing 4, and a telescopic housing 502 is movably connected to the top of the telescopic column 501. A correction shaft 8 is movably connected inside the telescopic housing 502. This allows the telescopic column 501 to move up and down via a telescopic drive device inside the telescopic housing 502, thereby driving the correction shaft 8 connected inside the telescopic housing 502 to achieve precise adjustment of its longitudinal position. This enables flexible changes in the relative height between the correction shaft 8 and the nut to be processed, thereby precisely controlling the longitudinal grinding angle of the correction shaft 8 on the nut's edges. Through the telescopic adjustment mechanism, the correction shaft 8 can flexibly adjust the grinding depth and angle according to the processing requirements, ensuring that the flatness and precision of the nut's edges meet the standards. This also improves the equipment's adaptability to nuts of different sizes and enhances the flexibility and precision of the processing technology.

[0032] In a preferred embodiment, the top of the CNC machine tool base 1 is movably connected to the left machine housing 401. The left machine housing 401 internally engages with a left gear rack 402. The left gear rack 402 externally is fixedly connected to a grinding fixing block 403. The grinding fixing block 403 internally engages with a right gear rack 405. The right gear rack 405 externally engages with the right machine housing 404. This facilitates the translation of the entire structure via a drive device at the bottom of the left machine housing 401, thereby adjusting the front-to-back distance between the thread grinding rod 9 and the workpiece. The gear set inside the left machine housing 401 drives the left gear rack 402 in telescopic motion. The lateral position adjustment of the grinding fixing block 403 is achieved, precisely controlling the grinding operation area. At the same time, the gear transmission system inside the right gear rack 405 can drive the right housing 404 to extend and retract, allowing the right housing 404 to be precisely inserted into the grinding fixing block 403. Utilizing the conductivity of the right housing 404, the positive and negative copper plates in the groove of the grinding fixing block 403 can be connected to form a circuit, thereby controlling the on / off state of the extension and retraction of the right housing 404. This ensures the accuracy of adjustment, enhances the stability and bearing strength of the grinding blade, and effectively improves the automation and safety of the grinding operation.

[0033] In a preferred embodiment, the grinding fixing block 403 is internally movably fitted with a threaded grinding rod 9, the internally movably engaged with a grinding rod bolt 410, and the internally movably fitted with a grinding block bolt 406. The bottom of the grinding block bolt 406 is movably connected to the threaded grinding rod 9. This facilitates precise control of the threaded grinding rod 9 through dual adjustment: when rotating the grinding rod bolt 410, the extension distance of the threaded grinding rod 9 can be precisely adjusted using the thread engagement principle, allowing the operator to flexibly set the grinding range according to the actual depth of the nut hole, ensuring that the thread processing depth meets the specifications. At the same time, inserting the grinding block bolt 406 into the grinding fixing block 403 and connecting it with the threaded grinding rod 9 forms a rigid fixation, effectively preventing the threaded grinding rod 9 from shifting due to vibration during high-speed rotation processing, ensuring the accuracy and consistency of thread cutting. This dual adjustment and fixing mechanism not only improves the equipment's adaptability to nuts of different specifications but also ensures the stability of the processing process, which is beneficial to improving the quality of thread processing.

[0034] In a preferred embodiment, the thread grinding rod 9 is internally fixedly sleeved with a blade mounting plate 407, and the blade mounting plate 407 is externally movably connected with an offset blade 408. The offset blade 408 is internally movably sleeved with a blade bolt 409, which facilitates the secure fixing of the offset blade 408 to the outside of the blade mounting plate 407 by the blade bolt 409, ensuring that the blade will not loosen or fall off during high-speed rotational cutting. The blade mounting plate 407 and the thread grinding rod 9 form a rigid connection. When the thread grinding rod 9 rotates, it can drive the blade mounting plate 407 to rotate synchronously. The offset blades 408 installed at both ends of the blade mounting plate 407 are used to cut the inner wall of the nut hole. The special angle design of the offset blade 408 can match the thread processing trajectory. The coordinated operation of the blades at both ends can significantly improve the thread cutting efficiency and achieve rapid forming of the nut's internal thread. At the same time, the detachable design of the blade bolt 409 makes it easy to replace the offset blade 408 of different specifications according to processing needs, or to replace it after the blade wears out, ensuring the accuracy and quality stability of thread processing.

[0035] In a preferred embodiment, a primary screen 601 is movably connected inside the waste discharge trough 10. A conveyor belt 602 is located outside the primary screen 601, and a receiving box 603 is located at the bottom of the conveyor belt 602. This facilitates solid-liquid separation through the primary screen 601: During processing, the cleaning and cooling water mixes with metal impurities generated during cutting and flows into the waste discharge trough 10. The primary screen 601 intercepts the metal impurities, allowing the water to drain through the screen gaps, preventing wastewater from mixing with impurities and affecting subsequent processing. The intercepted metal impurities fall onto the external conveyor belt 602, which then transports them to the receiving box 603 at the bottom for centralized collection. This design not only achieves automated impurity recovery and reduces manual cleaning costs, but also facilitates unified treatment or reuse of metal waste. Simultaneously, the separated water can be treated and recycled, conforming to the energy-saving and environmentally friendly production concept and improving the overall environmental performance and resource utilization efficiency of the equipment.

[0036] In a preferred embodiment, a secondary screen 604 is provided at the bottom of the primary screen 601, and a waste liquid sedimentation tank 605 is provided at the bottom of the secondary screen 604. A water pump 606 is fixedly connected to the outside of the waste liquid sedimentation tank 605, a water pipe bracket 607 is fixedly connected to the outside of the water pump 606, and a plastic hose 608 is fixedly connected to the outside of the water pipe bracket 607. This facilitates the secondary fine filtration of wastewater after passing through the primary screen 601 through the secondary screen 604, further removing residual fine metal debris in the water and improving water purity. The filtered wastewater then enters the waste liquid sedimentation tank 605. After settling, suspended impurities in the water are further separated to ensure that the water quality meets the recycling standards. The treated clean water is drawn by the water pump 606 and transported to the plastic hose 608 through the water pipe rack 607. Utilizing the plasticity of the plastic hose 608, the operator can flexibly adjust the spray angle to precisely guide the circulating water to the processing area, thereby achieving cooling and cleaning of the nut processing parts. This not only realizes the recycling of water resources and reduces water consumption in production, but also ensures the quality of cooling water through graded filtration and sedimentation, avoiding impurities from scratching the processing precision or causing secondary pollution to the equipment, and improving the cleanliness of the overall processing environment.

[0037] The working principle of this invention: The CNC machine tool for metal nut processing controls the rotation of the clamped nut blank by the clamping drive motor 3 inside the nut motor 2 to achieve multi-angle processing through the rotation of the clamped nut blank. The drilling motor box 4 can rotate the external rotating rod to clamp the nut 5, switching between the drilling shaft 6, grinding shaft 7, and correction shaft 8 to complete the drilling, inner wall grinding, and edge correction processes in sequence. Subsequently, the thread grinding rod 9 performs thread cutting processing, and the metal waste is discharged through the waste discharge trough 10. This equipment integrates multiple processes, reduces workpiece transfer time, improves efficiency, and ensures the continuity of dimensional accuracy between processes, thereby improving processing quality. In addition, the equipment achieves safety protection through the metal protective cover 101. The operator can control the cover to be stored or unfolded outside the clamping drive motor 3 by pulling the external handle; the unfolded protective cover can form a physical barrier during processing, preventing metal debris from flying, avoiding safety hazards and component contamination. When the metal protective cover 101 moves, the bottom cover sliding plate 102 restricts the movement trajectory through a preset groove, ensuring that it slides smoothly along a fixed path, avoiding deviation or jamming, and ensuring reliable protection and convenient operation.

[0038] The internal motor bearing of the clamp drive motor 3 drives the motor turntable 103 to rotate. The motor turntable 103 drives the clamping turntable 105 to rotate synchronously through the externally fixed metal sleeve 104. When the clamping turntable 105 rotates, the insert pin welded to the internal groove and the nut movable block 107 cooperate to drive the following: the insert shaft moves along the groove towards the proximal end, and the nut movable block 107 retracts within the clamping movable block 106 to clamp the nut; the insert shaft moves towards the distal end, and the nut movable block 107 expands to loosen the nut. The unidirectional rotation of the motor realizes the automatic switching of clamping action, ensuring the stability of the nut during processing, avoiding vibration and displacement, simplifying the control logic, improving clamping accuracy and efficiency, and adapting to the processing of nuts of different specifications. The motor turntable 103 and the clamping turntable 105 are fixed by a threaded connection. The clamping nut 202 is inserted into the clamping threaded hole 201 of the motor turntable 103, and the two are tightly fixed by the thread engagement, which avoids relative displacement during rotation and withstands processing torque and vibration. It also facilitates the replacement of clamping turntables 105 of different specifications. Disassembly and assembly can be completed by loosening or tightening the clamping nut 202, which improves the convenience of equipment maintenance and process adjustment. At the same time, the internal protrusion groove 301 of the clamping movable block 106 and the external protrusion 302 of the nut movable block 107 slide in cooperation. The protrusion 302 is embedded in the groove and can slide along the groove, which not only precisely limits the movement direction of the nut movable block 107 and ensures clamping accuracy, but also prevents it from falling off during movement, thereby enhancing the stability and safety of the mechanism.

[0039] Multiple adjustment mechanisms ensure processing precision: The telescopic drive device inside the telescopic housing 502 controls the telescopic column 501 to extend and retract vertically, driving the correction shaft 8 to adjust its longitudinal position, changing its relative height with the nut, precisely controlling the longitudinal grinding angle of the edges and corners, adapting to nuts of different sizes, and improving process flexibility. The bottom drive device of the left housing 401 drives the overall translation to adjust the front-to-back distance between the thread grinding rod 9 and the workpiece. The internal gear set drives the left gear rack 402 to extend and retract, adjusting the lateral position of the grinding fixing block 403. The internal gear transmission system of the right gear rack 405 drives the right housing 404 to extend and retract, allowing it to accurately insert into the grinding fixing block 403. The conductive properties connect the positive and negative copper plates in the groove to form a circuit, controlling the extension and retraction switch of the right housing 404, ensuring adjustment accuracy and blade stability. In addition, rotating the grinding rod bolt 410 can precisely adjust the extension distance of the thread grinding rod 9. The grinding block bolt 406 is inserted into the grinding fixing block 403 and connected to the thread grinding rod 9 to form a rigid fixation, preventing displacement during high-speed rotation. The blade bolt 409 fixes the offset blade 408 to the outside of the blade mounting plate 407. The blade mounting plate 407 is rigidly connected to the thread grinding rod 9. When rotated, the offset blade 408 cuts the inner wall of the nut hole. The special angle design matches the thread trajectory and improves cutting efficiency. The blade bolt 409 also facilitates blade replacement. In terms of waste material and wastewater treatment, the primary screen 601 intercepts metal impurities in the waste discharge trough 10 to achieve solid-liquid separation. The impurities fall into the conveyor belt 602 and are transported to the collection box 603 for centralized collection. After filtration, the wastewater is finely filtered by the secondary screen 604 and allowed to settle in the waste liquid sedimentation tank 605. The qualified clean water is drawn by the water pump 606 and guided to the processing area through the water pipe rack 607 and the plastic hose 608 to achieve cooling, cleaning and water resource recycling, reduce water consumption, avoid impurity pollution, and improve environmental performance and resource utilization.

[0040] Although the invention has been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these inventions without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0041] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of this invention only involve structures related to this invention. Other structures can be referred to with common designs. In the absence of conflict, the same invention and different inventions of this invention can be combined with each other. Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A CNC machine tool for machining metal nuts, comprising a CNC machine tool base (1), characterized in that: The top of the CNC machine tool base (1) is fixedly connected to a nut motor (2), the inside of the nut motor (2) is fixedly connected to a clamping drive motor (3), the outside of the clamping drive motor (3) is provided with a drilling motor box (4), the inside of the drilling motor box (4) is movably connected to a rotating rod clamping nut (5), the inside of the rotating rod clamping nut (5) is movably connected to a drilling shaft (6), the inside of the rotating rod clamping nut (5) is movably connected to a grinding shaft (7), the inside of the rotating rod clamping nut (5) is movably connected to a correction shaft (8), the outside of the clamping drive motor (3) is provided with a thread grinding rod (9), and the bottom of the thread grinding rod (9) is provided with a waste discharge groove (10).

2. The CNC machine tool for machining metal nuts according to claim 1, characterized in that: The nut motor (2) is internally fitted with a metal protective cover (101), the bottom of the metal protective cover (101) is movably connected to a cover sliding plate (102), and the bottom of the metal protective cover (101) is provided with a clamp drive motor (3).

3. The CNC machine tool for machining metal nuts according to claim 1, characterized in that: The internal of the clamp drive motor (3) is movably connected to the motor turntable (103), the external of the motor turntable (103) is fixedly connected to the metal sleeve (104), the external of the metal sleeve (104) is movably connected to the clamping turntable (105), the external of the clamping turntable (105) is movably connected to the clamping block (106), the external of the clamping block (106) is fixedly connected to the clamp drive motor (3), the internal of the clamping block (106) is movably connected to the nut block (107), the internal of the motor turntable (103) is provided with a clamp threaded hole (201), the internal of the clamp threaded hole (201) is movably engaged with the clamping nut (202), and the external of the clamping nut (202) is movably sleeved on the clamping turntable (105).

4. The CNC machine tool for machining metal nuts according to claim 3, characterized in that: The fixture movable block (106) has a protrusion groove (301) inside, the protrusion groove (301) is movably sleeved with a protrusion block (302), and the protrusion block (302) is fixedly connected to a nut movable block (107) outside.

5. A CNC machine tool for machining metal nuts according to claim 1, characterized in that: The top of the drilling motor box (4) is fixedly connected to the telescopic column (501), the top of the telescopic column (501) is movably connected to the telescopic housing (502), and the interior of the telescopic housing (502) is movably connected to the correction shaft (8).

6. The CNC machine tool for machining metal nuts according to claim 1, characterized in that: The top of the CNC machine tool base (1) is movably connected to the left machine box (401), the left machine box (401) is movably engaged with the left gear rack (402), the left gear rack (402) is fixedly connected to the outside of the grinding fixing block (403), the grinding fixing block (403) is movably sleeved with the right gear rack (405), and the right gear rack (405) is movably engaged with the right machine box (404).

7. A CNC machine tool for machining metal nuts according to claim 6, characterized in that: The grinding fixing block (403) is internally movably sleeved with a threaded grinding rod (9), the internally movably meshed with a grinding rod bolt (410), the internally movably sleeved with a grinding block bolt (406), and the bottom of the grinding block bolt (406) is movably connected to the threaded grinding rod (9).

8. A CNC machine tool for machining metal nuts according to claim 1, characterized in that: The threaded grinding rod (9) is internally fixed to the blade mounting plate (407), the blade mounting plate (407) is externally movably connected to the offset blade (408), and the offset blade (408) is internally movably connected to the blade bolt (409).

9. A CNC machine tool for machining metal nuts according to claim 1, characterized in that: The waste discharge trough (10) is internally connected to a primary screen (601), and a conveyor belt (602) is provided on the outside of the primary screen (601). A receiving box (603) is provided at the bottom of the conveyor belt (602).

10. A CNC machine tool for machining metal nuts according to claim 9, characterized in that: The bottom of the primary screen (601) is provided with a secondary screen (604), the bottom of the secondary screen (604) is provided with a waste liquid sedimentation tank (605), a water pump (606) is fixedly connected to the outside of the waste liquid sedimentation tank (605), a water pipe rack (607) is fixedly connected to the outside of the water pump (606), and a plastic hose (608) is fixedly connected to the outside of the water pipe rack (607).

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