Heavy numerical control machine precision control method and system

Abstract

This invention discloses a method and system for precision control of heavy-duty CNC machine tools, relating to the field of machine tool precision control technology. It includes a heavy-duty CNC machine tool body, a compensation mechanism, a monitoring mechanism, a spindle, and a temperature measuring ring. The compensation mechanism is fixedly connected to the top front end of the heavy-duty CNC machine tool body. A monitoring mechanism is provided on the outer wall of the heavy-duty CNC machine tool body. The spindle is fixedly connected to the bottom of the compensation mechanism. The compensation mechanism, by adjusting the position of the counterweight on the spindle mounting rod, weakens vibration sources, keeps the cutting trajectory stable, ensures the surface roughness meets requirements, and avoids surface accuracy defects caused by ripples, thus achieving precision control. The monitoring mechanism, by detecting the temperature change of the spindle at different speeds, temperatures, and running times, establishes an accurate "speed-time-thermal deformation" model. Simultaneously, by adjusting the amount of hot air delivered per unit time through a throttle valve, it achieves precise control of the temperature rise rate inside the transparent dust cover.

Description

Technical Field

[0001] This invention relates to the field of machine tool precision control technology, specifically a method and system for precision control of heavy-duty CNC machine tools. Background Technology

[0002] The precision control system for heavy-duty CNC machine tools is a comprehensive system that integrates four core functions: monitoring, analysis, compensation, and execution. It corrects various errors in the machining process in real time and ensures that heavy-duty CNC machine tools can output high-precision machining results in a long-term stable manner. It is the core technology support for the precision manufacturing of heavy-duty machine tools.

[0003] If the spindle has uneven static mass due to casting errors or component assembly deviations, it will generate inertial centrifugal force in a fixed direction during rotation. Existing technologies make it difficult to weaken the vibration source, keep the tool cutting trajectory stable, and ensure that the surface roughness meets the requirements. This makes it difficult to avoid surface accuracy defects caused by ripples, and thus makes it difficult to achieve precision control. The vibration generated by the machine tool will be transmitted to the base. Existing technologies make it difficult to avoid the amplification of vibration due to the tilt of the base and to significantly reduce the intensity of vibration transmitted to the ground. At the same time, it is difficult to limit the direction of vibration deviation and reduce the possibility of ground vibration being transmitted back to the machine tool, which reduces the accuracy of the machine tool and makes its practicality relatively limited.

[0004] Finally, existing technologies have limitations in real-time monitoring of spindle temperature changes at different speeds, operating times, and temperature rises, hindering the establishment of accurate "speed-time-thermal deformation" models. Their practicality is relatively limited, and some equipment struggles to adjust the amount of hot air delivered per unit time during temperature rise, making precise control of the temperature rise rate in the target space or equipment difficult. Furthermore, existing technologies struggle to adjust spindle motion to effectively suppress temperature rise, balance heat distribution, and offset predicted deformation, thus making it difficult to guarantee geometric accuracy and dimensional stability during machining. Summary of the Invention

[0005] Therefore, in order to overcome the above-mentioned shortcomings, the present invention provides a method and system for precision control of heavy-duty CNC machine tools.

[0006] The present invention is implemented as follows: a method and system for precision control of heavy-duty CNC machine tools are constructed. The device includes a heavy-duty CNC machine tool body, a compensation mechanism is fixedly connected to the top front end of the heavy-duty CNC machine tool body, a monitoring mechanism is provided on the outer wall of the heavy-duty CNC machine tool body, a spindle is fixedly connected to the bottom of the compensation mechanism, and a temperature measuring ring is sleeved on the outer wall of the spindle and electrically connected to an external display screen.

[0007] The compensation mechanism includes a first mounting box. The first mounting box is fixedly connected to the top front end of the heavy-duty CNC machine tool body. A first motor is fixedly connected to the rear right side of the first mounting box via a connecting block. A sliding wheel is fixedly connected to the bottom output shaft of the first motor. The left side of the sliding wheel intermittently engages with a mating wheel. A connecting rod is fixedly connected to the front end of the mating wheel. A turntable is fixedly connected to the front end of the connecting rod. An eight-shaped sliding groove is fixedly connected to the front end of the turntable. Moving rods are slidably connected to the upper and lower sides of the front end of the eight-shaped sliding groove. The moving rod below the front end of the eight-shaped sliding groove... A first electromagnetic block is fixedly connected to the bottom, and a counterweight is magnetically attracted to the bottom of the first electromagnetic block. The outer wall of the counterweight is magnetically attracted to a second electromagnetic block. The second electromagnetic block is fixedly connected to the inner wall of the main shaft mounting rod. The top of the moving rod above the front end of the figure-eight groove is fixedly connected to the inner gear plate of the gear plate component. The gear rod inside the gear plate component is segmented, specifically composed of two sets of rods that are sleeved together. The front and rear rods of the gear rod inside the gear plate component are respectively inserted and fixed to the front and rear slots of the electromagnetic clutch. The back of the gear rod inside the gear plate component is fixedly connected to the front end of the control knob.

[0008] Preferably, the monitoring mechanism includes a transparent dust cover. The outer wall of the heavy-duty CNC machine tool body is provided with a transparent dust cover. A shock-absorbing mechanism is fixedly connected to the front right side of the transparent dust cover. A control mechanism is fixedly connected to the back of the transparent dust cover. A fourth electromagnetic block is fixedly connected to the bottom of the transparent dust cover. A front plate is slidably connected to the front inner side of the transparent dust cover. A fifth electromagnetic block is fixedly connected to the outer wall of the front plate, and the fifth electromagnetic block is magnetically attracted to the top of the transparent dust cover. A second connecting pipe is fixedly connected to the top of the transparent dust cover. A throttle valve is fixedly connected to the inlet of the second connecting pipe. A timer is fixedly connected to the rear right side of the transparent dust cover. A temperature sensor is fixedly connected to the rear right side of the transparent dust cover.

[0009] Preferably, the shock absorption mechanism includes a second mounting box. The right front end of the transparent dust cover is fixedly connected to the second mounting box. A first connecting pipe is fixedly connected to both the front and left ends of the second mounting box. A one-way valve is fixedly connected to the inlet of the first connecting pipe. An airbag is fixedly connected to the left end of the first connecting pipe at the left end of the second mounting box. A pressure sensor is fixedly connected to the center of the right end of the airbag and is electrically connected to an external display screen. Mounting rods are fixedly connected around the airbag, and rubber blocks are fixedly connected to the bottom of the mounting rods. The top of the mounting rods is slidably connected to the outer wall of the sliding rod. A mounting plate is fixedly connected to the bottom right end of the second mounting box. A rotating block is rotatably connected to the top right end of the mounting plate. A rotating rod is rotatably connected to the top left end of the rotating block. The left end of the rotating rod is magnetically attracted to the outer wall of the third electromagnetic block, and the third electromagnetic block is electrically connected to an external current output device. A moving block is rotatably connected to the bottom left end of the third electromagnetic block. A piston rod is fixedly connected to the left end of the moving block. The outer wall of the piston rod is slidably connected to the right end of the piston cylinder. A second motor is fixedly connected to the bottom right end of the second mounting box. The front end and left end of the piston cylinder are both fixedly connected to a first connecting pipe.

[0010] Preferably, the control mechanism includes an insulating mounting shell, the back of the transparent dust cover is fixedly connected to the insulating mounting shell, a PCB board is fixedly connected inside the insulating mounting shell, a data acquisition module is soldered to the center of the lower front end of the PCB board, a multi-core processor is soldered to the lower left front end of the PCB board, a data storage module is soldered to the lower right front end of the PCB board, a comparison module is soldered to the upper right front end of the PCB board, an instruction output module is soldered to the lower right front end of the PCB board, and an AI acceleration unit is soldered to the upper right front end of the PCB board.

[0011] Preferably, the first electromagnetic block and the second electromagnetic block are both electrically connected to an external current output device, the bottom of the heavy-duty CNC machine tool body is rotatably connected to a spindle mounting rod, and the back of the control knob is fixedly connected to the left rear end of the first mounting box.

[0012] Preferably, the fourth and fifth electromagnetic blocks are electrically connected to an external current output device, and the temperature sensor is located below the timer.

[0013] Preferably, the timer and temperature sensor are electrically connected to an external display screen, and the second connecting pipe is connected to an external hot air delivery box.

[0014] Preferably, the first connecting pipe at the left end of the second mounting box passes through the right side of the transparent dust cover and is fixedly connected to the interior; the left end of the piston cylinder is fixedly connected to the left end inside the second mounting box; and a rotating block is fixedly connected to the top output shaft of the second motor.

[0015] Preferably, the AI ​​acceleration unit is located to the left of the comparison module, and the instruction output module is located to the upper right of the data storage module.

[0016] Preferably, a method for precision control of a heavy-duty CNC machine tool includes the following steps:

[0017] Step 1: Monitoring; Before machining the body of the heavy-duty CNC machine tool, the temperature change of the spindle at different speeds, different running times and different temperatures is monitored in real time through the cooperation of the monitoring mechanism and the temperature measuring ring.

[0018] Step 2: Data Integration; The control mechanism integrates the temperature changes of the spindle at different speeds, different running times, and different temperatures, controls the heavy-duty CNC machine tool body and adjusts the spindle motion state, and performs a primary control on the accuracy of the heavy-duty CNC machine tool body.

[0019] Step 3: Compensation; A compensation mechanism is used to generate a compensating force opposite to the centrifugal force of the spindle, thereby further controlling the accuracy of the heavy-duty CNC machine tool body;

[0020] Step 4: Vibration reduction; The vibration reduction mechanism weakens the intensity of vibration transmitted to the ground, reduces the possibility of ground vibration being transmitted back to the heavy CNC machine tool body, and performs final control on the accuracy of the heavy CNC machine tool body.

[0021] The present invention has the following advantages: The present invention provides an improved method and system for precision control of heavy-duty CNC machine tools, which, compared with similar equipment, has the following improvements:

[0022] The present invention discloses a precision control method and system for heavy-duty CNC machine tools. It includes a compensation mechanism that adjusts the position of the counterweight on the spindle mounting rod to weaken vibration sources, maintain a smooth cutting trajectory, ensure the surface roughness meets requirements, and prevent surface defects caused by ripples, thus achieving precision control. A monitoring mechanism is also included to detect temperature changes in the spindle at different speeds, temperatures, and operating times, establishing a precise "speed-time-thermal deformation" model. Simultaneously, a throttle valve regulates the amount of hot air delivered per unit time, achieving precise control of the temperature rise rate inside the transparent dust cover. Finally, a vibration damping mechanism is included, where rubber blocks inside the mounting rod significantly reduce the transmission of vibrations to the ground. The system effectively reduces the intensity of vibrations and minimizes the possibility of ground vibrations being transmitted back to the heavy-duty CNC machine tool body. A sliding rod within the mounting rod further restricts the direction of vibration deviation. Pressure sensors collect real-time fluctuation data of the airbag to indirectly determine the magnitude of the vibration force on the heavy-duty CNC machine tool body. Finally, by inflating or deflating the airbag, the airbag pressure is adjusted to achieve horizontal calibration of the heavy-duty CNC machine tool body base, preventing amplified vibrations due to base tilt. A control mechanism is also included, with multiple modules working together to effectively suppress temperature rise, balance heat distribution, and offset predicted deformation. By suppressing heat sources and compensating for errors, the system directly ensures the geometric accuracy and dimensional stability of the machining process, achieving precision control. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the process flow of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the heavy-duty CNC machine tool body and monitoring mechanism of the present invention;

[0025] Figure 3 This is a three-dimensional structural diagram of the heavy-duty CNC machine tool body of the present invention;

[0026] Figure 4 This is the present invention. Figure 3 Enlarged structural diagram at point A;

[0027] Figure 5 This is a three-dimensional exploded view of the compensation mechanism of the present invention;

[0028] Figure 6 This is a three-dimensional structural diagram of the monitoring mechanism of the present invention;

[0029] Figure 7 This is a three-dimensional structural diagram of the shock absorption mechanism of the present invention;

[0030] Figure 8 This is a three-dimensional exploded view of the internal structure of the second mounting box of the present invention;

[0031] Figure 9 This is a three-dimensional exploded view of the control mechanism of the present invention.

[0032] The components include: heavy-duty CNC machine tool body-1, compensation mechanism-2, first mounting box-21, first motor-22, sliding wheel-23, mating wheel-24, connecting rod-25, turntable-26, figure-eight sliding groove-27, moving rod-28, first electromagnetic block-29, counterweight block-210, second electromagnetic block-211, spindle mounting rod-212, gear tooth plate-213, electromagnetic clutch-214, control knob-215, monitoring mechanism-3, transparent dust cover-31, shock absorption mechanism-32, second mounting box-321, first connecting pipe-322, one-way valve-323, airbag-324, pressure sensor-325, mounting rod-326, sliding rod-327. Mounting plate-328, rotating block-329, rotating rod-3210, third electromagnetic block-3211, moving block-3212, piston rod-3213, piston cylinder-3214, second motor-3215, control mechanism-33, insulating mounting shell-331, PCB board-332, data acquisition module-333, multi-core processor-334, data storage module-335, comparison module-336, instruction output module-337, AI acceleration unit-338, fourth electromagnetic block-34, front plate-35, fifth electromagnetic block-36, second connecting pipe-37, throttle valve-38, timer-39, temperature sensor-310, spindle-4, temperature measuring ring-5. Detailed Implementation

[0033] The following is in conjunction with the appendix Figures 1-9 The principles and features of the present invention are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of the invention. The invention is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0034] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The embodiments of this invention will now be described according to its overall structure.

[0036] Example 1:

[0037] Please see Figures 1-5 The present invention discloses a method and system for precision control of heavy-duty CNC machine tools, including a heavy-duty CNC machine tool body 1, a compensation mechanism 2 fixedly connected to the top front end of the heavy-duty CNC machine tool body 1, a monitoring mechanism 3 provided on the outer wall of the heavy-duty CNC machine tool body 1, a spindle 4 fixedly connected to the bottom of the compensation mechanism 2, a temperature measuring ring 5 sleeved on the outer wall of the spindle 4, and the temperature measuring ring 5 being electrically connected to an external display screen.

[0038] The compensation mechanism 2 includes a first mounting box 21. The first mounting box 21 is fixedly connected to the top front end of the heavy-duty CNC machine tool body 1. The first motor 22 is fixedly connected to the right rear end of the first mounting box 21 through a connecting block. The bottom output shaft of the first motor 22 is fixedly connected to a sliding wheel 23, which facilitates the rotation of the sliding wheel 23.

[0039] The left side of the sliding wheel 23 is intermittently engaged with the mating wheel 24. The front end of the mating wheel 24 is fixedly connected to a connecting rod 25. The front end of the connecting rod 25 is fixedly connected to a turntable 26. The front end of the turntable 26 is fixedly connected to a figure-eight sliding groove 27. The upper and lower sides of the front end of the figure-eight sliding groove 27 are slidably connected to moving rods 28. The back of the moving rod 28 at the upper front end of the figure-eight sliding groove 27 is slidably connected to the rear end of the first mounting box 21. The moving rod 28 at the lower front end of the figure-eight sliding groove 27 passes through the bottom of the first mounting box 21 and is slidably connected to its interior.

[0040] The bottom of the moving rod 28 at the lower front end of the figure-eight groove 27 is fixedly connected to the first electromagnetic block 29. The bottom of the first electromagnetic block 29 is magnetically attracted to the counterweight block 210. The outer wall of the counterweight block 210 is magnetically attracted to the second electromagnetic block 211. The first electromagnetic block 29 facilitates the movement of the counterweight block 210.

[0041] The second electromagnetic block 211 is fixedly connected to the inner wall of the main shaft mounting rod 212. The top of the moving rod 28 above the front end of the figure-eight groove 27 is fixedly connected to the inner gear plate of the gear plate component 213. The gear rod inside the gear plate component 213 is segmented, specifically composed of two sets of rods that are sleeved together. The front and rear rods of the gear rod inside the gear plate component 213 are respectively inserted and fixed to the front and rear slots of the electromagnetic clutch 214. The back of the gear rod inside the gear plate component 213 is fixedly connected to the front end of the control knob 215. The control knob 215 is electrically connected to the second motor 3215.

[0042] The first electromagnetic block 29 and the second electromagnetic block 211 are both electrically connected to the external current output device. The bottom of the heavy-duty CNC machine tool body 1 is rotatably connected to the spindle mounting rod 212, and the back of the control knob 215 is fixedly connected to the left side of the rear end inside the first mounting box 21.

[0043] The working principle of the precision control method and system for heavy-duty CNC machine tools based on Embodiment 1 is as follows:

[0044] When using this device, first place it in the work area, then connect it to an external power source to provide the power required for its operation.

[0045] When compensation is required for the main spindle 4, the first motor 22 is started. The first motor 22 drives the sliding wheel 23 to rotate. The sliding wheel 23 drives the mating wheel 24 to rotate through intermittent engagement with the mating wheel 24. The mating wheel 24 drives the connecting rod 25 to rotate. The connecting rod 25 drives the turntable 26 to rotate. The turntable 26 drives the figure-eight sliding groove 27 to rotate. The figure-eight sliding groove 27 drives the moving rod 28 at its front end to move up or down. The moving rod 28 at the front end of the figure-eight sliding groove 27 drives the first electromagnetic block 29 to move up or down. The first electromagnetic block 29 drives the counterweight block 210 to move upward within the main spindle mounting rod 212. Alternatively, it can move downwards. When the counterweight 210 moves to a suitable position, the external current output device drives the second electromagnetic block 211 to work, so that the second electromagnetic block 211 magnetically attracts the counterweight 210. Then, the external current output device drives the first electromagnetic block 29 to stop working, so that the first electromagnetic block 29 and the counterweight 210 are in a non-magnetic attraction state. Thus, the movement position of the counterweight 210 at the spindle mounting rod 212 weakens the vibration source, keeps the cutting trajectory stable, ensures that the surface roughness meets the requirements, avoids surface accuracy defects caused by ripples, and achieves precision control.

[0046] When the second motor 3215 needs to be driven, the electromagnetic clutch 214 is activated, causing the electromagnetic clutch 214 to lock the internal gear rod of the gear plate 213. During the rotation of the figure-eight slide groove 27, the moving rod 28 at the front end of the figure-eight slide groove 27 is moved upward synchronously. The moving rod 28 at the front end of the figure-eight slide groove 27 drives the internal gear plate of the gear plate 213 to move upward. The internal gear plate of the gear plate 213 drives the internal gear of the gear plate 213 to rotate. The internal gear of the gear plate 213 drives the internal gear rod of the gear plate 213 to rotate. The internal gear rod of the gear plate 213 drives the control knob 215 to rotate. The rotation of the control knob 215 drives the second motor 3215 to work.

[0047] Example 2:

[0048] Please see Figure 6 The present invention provides a method and system for precision control of heavy-duty CNC machine tools. Compared with embodiment one, this embodiment further includes a monitoring mechanism 3. The monitoring mechanism 3 includes a transparent dust cover 31. The outer wall of the heavy-duty CNC machine tool body 1 is provided with a transparent dust cover 31. A shock-absorbing mechanism 32 is fixedly connected to the right front end of the transparent dust cover 31. The transparent dust cover 31 facilitates the installation and fixing of the shock-absorbing mechanism 32.

[0049] A control mechanism 33 is fixedly connected to the back of the transparent dust cover 31. A fourth electromagnetic block 34 is fixedly connected to the bottom of the transparent dust cover 31. A front plate 35 is slidably connected to the front end of the transparent dust cover 31. A fifth electromagnetic block 36 is fixedly connected to the outer wall of the front plate 35. The fifth electromagnetic block 36 is magnetically attracted to the top of the transparent dust cover 31. The fifth electromagnetic block 36 facilitates the fixation of the moving position of the front plate 35.

[0050] A second connecting pipe 37 is fixedly connected to the top of the transparent dust cover 31. A throttle valve 38 is fixedly connected to the inlet of the second connecting pipe 37. A timer 39 is fixedly connected to the right rear end of the transparent dust cover 31. A temperature sensor 310 is fixedly connected to the right rear end of the transparent dust cover 31. The left end of the temperature sensor 310 passes through the right end of the transparent dust cover 31 and is fixedly connected to its interior.

[0051] The fourth electromagnetic block 34 and the fifth electromagnetic block 36 are both electrically connected to the external current output device. The temperature sensor 310 is located below the timer 39. The timer 39 and the temperature sensor 310 are both electrically connected to the external display screen. The second connecting pipe 37 is connected to the external hot air delivery box.

[0052] In this embodiment:

[0053] When it is necessary to monitor the temperature change of the spindle 4 under different temperatures, the second connecting pipe 37 is connected to the external hot air delivery box, and the throttle valve 38 is activated, allowing external hot air to be delivered to the transparent dust cover 31 through the second connecting pipe 37. Then, the operator pulls down the front plate 35, so that the transparent dust cover 31 is in a closed state. The fifth electromagnetic block 36 is driven by the external current output device, so that the fifth electromagnetic block 36 is magnetically attracted to the transparent dust cover 31, fixing the moving position of the front plate 35. Then, the internal temperature of the transparent dust cover 31 with external hot air is detected by the temperature sensor 310 to determine the temperature change inside the transparent dust cover 31. At the same time, the temperature measuring ring 5 detects the temperature of the spindle 4 and sends the electrical signal to the external display screen, thereby obtaining the temperature of the spindle 4. The temperature changes under different temperature rise conditions are then monitored by the heavy-duty CNC machine tool body 1 driving the spindle 4 to rotate at different speeds. The temperature of the spindle 4 is detected again by the temperature measuring ring 5, and the electrical signal is transmitted to the external display screen. This allows us to know the temperature changes of the spindle 4 at different speeds. When the heavy-duty CNC machine tool body 1 is working, the working time of the heavy-duty CNC machine tool body 1 is recorded by the timer 39. The temperature of the spindle 4 is then detected by the temperature measuring ring 5, and the electrical signal is transmitted to the external display screen. This allows us to know the temperature changes of the spindle 4 at different running times. This establishes an accurate "speed-time-thermal deformation" model. At the same time, the amount of hot air delivered per unit time is adjusted by the throttle valve 38 to achieve precise control of the temperature rise rate inside the transparent dust cover 31.

[0054] Example 3:

[0055] Please see Figures 7-8 The present invention provides a method and system for precision control of heavy-duty CNC machine tools. Compared with Embodiment 1, this embodiment further includes: a shock-absorbing mechanism 32. The shock-absorbing mechanism 32 includes a second mounting box 321. The right front end of the transparent dust cover 31 is fixedly connected to the second mounting box 321. The front end and left end of the second mounting box 321 are both fixedly connected to a first connecting pipe 322. A one-way valve 323 is fixedly connected to the inlet of the first connecting pipe 322. The one-way valve 323 facilitates the control of gas inlet and outlet.

[0056] An airbag 324 is fixedly connected to the left end of the first connecting pipe 322 at the left end of the second mounting box 321. A pressure sensor 325 is fixedly connected to the center of the right end of the airbag 324, and the pressure sensor 325 is electrically connected to an external display screen. Mounting rods 326 are fixedly connected to all four sides of the airbag 324, and a rubber block is fixedly connected to the bottom of the mounting rod 326. The top of the mounting rod 326 is slidably connected to the outer wall of the sliding rod 327. The mounting rod 326 and the sliding rod 327 facilitate the limitation of the vibration offset direction.

[0057] The bottom right end of the second mounting box 321 is fixedly connected to the mounting plate 328. The top right end of the mounting plate 328 is rotatably connected to the rotating block 329. The top left end of the rotating block 329 is rotatably connected to the rotating rod 3210. The left end of the rotating rod 3210 is magnetically attracted to the outer wall of the third electromagnetic block 3211. The third electromagnetic block 3211 is electrically connected to the external current output device. The rotating block 329 facilitates the swinging of the rotating rod 3210.

[0058] The bottom left end of the third electromagnetic block 3211 is rotatably connected to a movable block 3212. The left end of the movable block 3212 is fixedly connected to a piston rod 3213. The outer wall of the piston rod 3213 is slidably connected to the right end of the piston cylinder 3214. The bottom right end of the second mounting box 321 is fixedly connected to a second motor 3215. The second motor 3215 facilitates driving the rotating block 329 to rotate.

[0059] The piston cylinder 3214 is fixedly connected to the front end and the left end with a first connecting pipe 322. The first connecting pipe 322 at the left end of the second mounting box 321 passes through the right side of the transparent dust cover 31 and is fixedly connected to the inside. The left end of the piston cylinder 3214 is fixedly connected to the left end inside the second mounting box 321. The top output shaft of the second motor 3215 is fixedly connected to a rotating block 329.

[0060] In this embodiment:

[0061] When the heavy-duty CNC machine tool body 1 vibrates, the vibration is transmitted to the sliding rod 327. The sliding rod 327 compresses the rubber block inside the mounting rod 326, causing the rubber block to undergo elastic deformation. This converts the mechanical energy of the vibration into the internal energy of the rubber molecules, thereby significantly reducing the intensity of the vibration transmitted to the ground and reducing the possibility of the ground vibration being transmitted back to the heavy-duty CNC machine tool body 1. The sliding rod 327 slides within the mounting rod 326, limiting the direction of vibration deviation. At the same time, the vibration generated by the heavy-duty CNC machine tool body 1 during vibration is transmitted to the base, causing the compressive force on the airbag 324 to fluctuate periodically. The pressure sensor 325 collects this fluctuation data in real time and transmits the electrical signal to the external display screen. The magnitude of the vibration force of the heavy-duty CNC machine tool body 1 can be indirectly determined through this pressure data.

[0062] When the airbag 324 needs to be inflated or deflated, the third electromagnetic block 3211 is stopped by the external current output device. The operator pulls the third electromagnetic block 3211 to increase or decrease the overall length of the third electromagnetic block 3211 and the rotating rod 3210 as needed. Then, the third electromagnetic block 3211 is activated by the external current output device to fix the overall length of the third electromagnetic block 3211 and the rotating rod 3210. Then, the one-way valve 323 at the front and left ends of the piston cylinder 3214 is activated, and the rotating block 3210 is driven by the second motor 3215. 9. Rotation: Rotating block 329, through rotational connection with rotating rod 3210, drives third electromagnetic block 3211 to swing and move left or right. Third electromagnetic block 3211 drives moving block 3212 to move left or right. Moving block 3212 drives piston rod 3213 to move left or right within piston cylinder 3214. Thus, the first connecting pipe 322 at the left end of piston cylinder 3214 inflates or deflates airbag 324, adjusting the pressure of airbag 324, thereby achieving horizontal calibration of the base of heavy-duty CNC machine tool body 1 and avoiding amplification of vibration due to base tilt.

[0063] Example 4:

[0064] Please see Figure 9 The present invention provides a method and system for precision control of heavy-duty CNC machine tools. Compared with Embodiment 1, this embodiment further includes: a control mechanism 33. The control mechanism 33 includes an insulating mounting shell 331. The back of the transparent dust cover 31 is fixedly connected to the insulating mounting shell 331. A PCB board 332 is fixedly connected inside the insulating mounting shell 331. The insulating mounting shell 331 facilitates the installation and fixation of the PCB board 332.

[0065] A data acquisition module 333 is soldered to the center of the lower front end of the PCB board 332. A multi-core processor 334 is soldered to the lower left front end of the PCB board 332. A data storage module 335 is soldered to the lower right front end of the PCB board 332. The data storage module 335 facilitates the storage of real-time data and historical processing data.

[0066] A comparison module 336 is fixed to the upper right of the front end of the PCB board 332 by solder. An instruction output module 337 is fixed to the lower right of the front end of the PCB board 332 by solder. An AI acceleration unit 338 is fixed to the upper right of the front end of the PCB board 332 by solder. The AI ​​acceleration unit 338 is located to the left of the comparison module 336, and the instruction output module 337 is located to the upper right of the data storage module 335.

[0067] In this embodiment:

[0068] First, the data acquisition module 333 receives real-time data on the temperature changes of the spindle 4 at different speeds, running times, and temperatures. The analog signals are converted into digital signals and uploaded to the multi-core processor 334 at a fixed frequency to ensure no data delay or loss. The real-time data and historical processing data are then stored together in the data storage module 335. The multi-core processor 334 first calls the historical data in the data storage module 335 and compares the current state of the spindle 4 with similar historical processing data through the comparison module 336 to preliminarily determine whether there is a trend of accuracy deviation. Then, the AI ​​acceleration unit 338, based on the trained model, further analyzes the influence coefficients of speed, running time, and processing temperature on temperature, and accurately predicts the accuracy error that may occur in the current state of processing. If the AI ​​acceleration unit 338 predicts that the accuracy error exceeds the threshold, the instruction output module 337 generates an adjustment instruction and sends it directly to the heavy-duty CNC machine tool body 1 to adjust the motion state of the spindle 4, effectively suppressing temperature rise, balancing heat distribution, and offsetting the predicted deformation. From the two dimensions of suppressing heat sources and compensating for errors, it directly ensures the geometric accuracy and dimensional stability of the processing process, and achieves precision control.

[0069] Example 5:

[0070] Please see Figures 1-9 The present invention provides a method and system for precision control of heavy-duty CNC machine tools. Compared with Embodiment 1, this embodiment further includes the following steps:

[0071] Step 1: Monitoring; Before machining the heavy-duty CNC machine tool body 1, the temperature change of the spindle 4 at different speeds, different running times and different temperatures is monitored in real time through the cooperation of the monitoring mechanism 3 and the temperature measuring ring 5.

[0072] Step 2: Data integration; The control mechanism 33 integrates the temperature changes of the spindle 4 at different speeds, different running times and different temperatures, controls the heavy-duty CNC machine tool body 1 and adjusts the motion state of the spindle 4, and performs one control on the accuracy of the heavy-duty CNC machine tool body 1.

[0073] Step 3: Compensation; The compensation mechanism 2 generates a compensating force opposite to the centrifugal force of the spindle 4, thereby re-controlling the accuracy of the heavy-duty CNC machine tool body 1;

[0074] Step 4: Vibration reduction; The vibration reduction mechanism 32 weakens the intensity of vibration transmitted to the ground, reduces the possibility of ground vibration being transmitted back to the heavy CNC machine tool body 1, and performs final control on the accuracy of the heavy CNC machine tool body 1.

[0075] This invention provides an improved method and system for precision control of heavy-duty CNC machine tools. A compensation mechanism 2 is included, which adjusts the position of the counterweight 210 on the spindle mounting rod 212 to weaken vibration sources, maintain a smooth cutting trajectory, ensure the surface roughness meets requirements, and avoid surface defects caused by ripples, thus achieving precision control. A monitoring mechanism 3 is included, which detects the temperature changes of the spindle 4 at different speeds, temperatures, and running times to establish a precise "speed-time-thermal deformation" model. Simultaneously, a throttle valve 38 adjusts the amount of hot air delivered per unit time, achieving precise control of the temperature rise rate inside the transparent dust cover 31. A vibration damping mechanism 32 is included, which significantly reduces the transmission of vibration to the ground through rubber blocks inside the mounting rod 326. The system strengthens the machine tool body and reduces the possibility of ground vibration being transmitted back to the heavy-duty CNC machine tool body 1. A sliding rod 327 slides within the mounting rod 326 to limit the direction of vibration deviation. A pressure sensor 325 collects real-time fluctuation data of the airbag 324 to indirectly determine the magnitude of the vibration force on the heavy-duty CNC machine tool body 1. Finally, by inflating or deflating the airbag 324, the pressure of the airbag 324 is adjusted to achieve horizontal calibration of the base of the heavy-duty CNC machine tool body 1, preventing amplified vibration due to base tilt. A control mechanism 33 is set up to effectively suppress temperature rise and balance heat distribution through multi-module cooperation, offsetting predicted deformation. From the two dimensions of suppressing heat sources and compensating for errors, it directly ensures the geometric accuracy and dimensional stability of the machining process, achieving precision control.

[0076] The above description shows and illustrates the basic principles, main features, and advantages of the present invention. Standard parts used in the present invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0077] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A precision control system for a heavy-duty CNC machine tool, comprising a heavy-duty CNC machine tool body (1), wherein a compensation mechanism (2) is fixedly connected to the top front end of the heavy-duty CNC machine tool body (1), a monitoring mechanism (3) is provided on the outer wall of the heavy-duty CNC machine tool body (1), a spindle (4) is fixedly connected to the bottom of the compensation mechanism (2), a temperature measuring ring (5) is sleeved on the outer wall of the spindle (4), and the temperature measuring ring (5) is electrically connected to an external display screen; Its features are: The compensation mechanism (2) includes a first mounting box (21). The first mounting box (21) is fixedly connected to the top front end of the heavy-duty CNC machine tool body (1). The first motor (22) is fixedly connected to the right rear end of the first mounting box (21) via a connecting block. The bottom output shaft of the first motor (22) is fixedly connected to a sliding wheel (23). The left side of the sliding wheel (23) is intermittently engaged with a mating wheel (24). The front end of the mating wheel (24) is fixedly connected to a connecting rod (25). The front end of the connecting rod (25) is fixedly connected to a turntable (26). The front end of the turntable (26) is fixedly connected to a figure-eight sliding groove (27). The upper and lower sides of the front end of the figure-eight sliding groove (27) are slidably connected to moving rods (28). The lower side of the front end of the figure-eight sliding groove (27) is connected to a moving rod (28). 8) is fixedly connected to the bottom of a first electromagnetic block (29), and the bottom of the first electromagnetic block (29) is magnetically attracted to a counterweight block (210). The outer wall of the counterweight block (210) is magnetically attracted to the second electromagnetic block (211). The second electromagnetic block (211) is fixedly connected to the inner wall of the main shaft mounting rod (212). The top of the moving rod (28) above the front end of the figure-eight groove (27) is fixedly connected to the inner gear plate of the gear plate component (213). The gear rod inside the gear plate component (213) is segmented and consists of two sets of rods that are sleeved together. The front and rear rods of the gear rod inside the gear plate component (213) are respectively inserted and fixed to the front and rear slots of the electromagnetic clutch (214). The back of the gear rod inside the gear plate component (213) is fixedly connected to the front end of the control knob (215). The monitoring mechanism (3) includes a transparent dust cover (31). The outer wall of the heavy-duty CNC machine tool body (1) is provided with a transparent dust cover (31). A shock-absorbing mechanism (32) is fixedly connected to the right front end of the transparent dust cover (31). A control mechanism (33) is fixedly connected to the back of the transparent dust cover (31). A fourth electromagnetic block (34) is fixedly connected to the bottom of the transparent dust cover (31). A front plate (35) is slidably connected to the inner front end of the transparent dust cover (31). A fifth electromagnetic block (36) is fixedly connected to the outer wall of the front plate (35). The fifth electromagnetic block (36) is magnetically attracted to the top of the transparent dust cover (31). A second connecting pipe (37) is fixedly connected to the top of the transparent dust cover (31). A throttle valve (38) is fixedly connected to the inlet of the second connecting pipe (37). A timer (39) is fixedly connected to the right rear end of the transparent dust cover (31). A temperature sensor (310) is fixedly connected to the right rear end of the transparent dust cover (31).

2. The precision control system for a heavy-duty CNC machine tool according to claim 1, characterized in that: The shock absorption mechanism (32) includes a second mounting box (321). The right front end of the transparent dust cover (31) is fixedly connected to the second mounting box (321). The front end and left end of the second mounting box (321) are both fixedly connected to a first connecting pipe (322). A one-way valve (323) is fixedly connected to the inlet of the first connecting pipe (322). An airbag (324) is fixedly connected to the left end of the first connecting pipe (322) at the left end of the second mounting box (321). A pressure sensor (325) is fixedly connected to the center of the right end of the airbag (324). The pressure sensor (325) is electrically connected to an external display screen. Mounting rods (326) are fixedly connected around the airbag (324). A rubber block is fixedly connected to the bottom of the mounting rod (326). The top of the mounting rod (326) is slidably connected to the outer wall of the sliding rod (327). The second mounting box (321) is fixedly connected to the right front end of the transparent dust cover (31). 21) An installation plate (328) is fixedly connected to the bottom right end of the inner box. A rotating block (329) is rotatably connected to the top right end of the installation plate (328). A rotating rod (3210) is rotatably connected to the top left end of the rotating block (329). The left end of the rotating rod (3210) is magnetically attracted to the outer wall of the third electromagnetic block (3211). The third electromagnetic block (3211) is electrically connected to the external current output device. A moving block (3212) is rotatably connected to the bottom left end of the third electromagnetic block (3211). A piston rod (3213) is fixedly connected to the left end of the moving block (3212). The outer wall of the piston rod (3213) is slidably connected to the right end of the piston cylinder (3214). A second motor (3215) is fixedly connected to the bottom right end of the second installation box (321). The first connecting pipe (322) is fixedly connected to both the front end and the left end of the piston cylinder (3214).

3. The precision control system for a heavy-duty CNC machine tool according to claim 2, characterized in that: The control mechanism (33) includes an insulating mounting shell (331). The transparent dust cover (31) is fixedly connected to the back of the insulating mounting shell (331). A PCB board (332) is fixedly connected inside the insulating mounting shell (331). A data acquisition module (333) is soldered to the center of the lower front end of the PCB board (332). A multi-core processor (334) is soldered to the lower left front end of the PCB board (332). A data storage module (335) is soldered to the lower right front end of the PCB board (332). A comparison module (336) is soldered to the upper right front end of the PCB board (332). An instruction output module (337) is soldered to the lower right front end of the PCB board (332). An AI acceleration unit (338) is soldered to the upper right front end of the PCB board (332).

4. The precision control system for a heavy-duty CNC machine tool according to claim 3, characterized in that: The first electromagnetic block (29) and the second electromagnetic block (211) are both electrically connected to an external current output device. The bottom of the heavy-duty CNC machine tool body (1) is rotatably connected to a spindle mounting rod (212). The back of the control knob (215) is fixedly connected to the left side of the rear end inside the first mounting box (21).

5. The precision control system for a heavy-duty CNC machine tool according to claim 4, characterized in that: The fourth electromagnetic block (34) and the fifth electromagnetic block (36) are both electrically connected to the external current output device, and the temperature sensor (310) is located below the timer (39).

6. The precision control system for a heavy-duty CNC machine tool according to claim 5, characterized in that: The timer (39) and temperature sensor (310) are electrically connected to the external display screen, and the second connecting pipe (37) is connected to the external hot air delivery box.

7. The precision control system for a heavy-duty CNC machine tool according to claim 6, characterized in that: The first connecting pipe (322) at the left end of the second mounting box (321) passes through the right side of the transparent dust cover (31) and is fixedly connected to the inside. The left end of the piston cylinder (3214) is fixedly connected to the left end inside the second mounting box (321). The top output shaft of the second motor (3215) is fixedly connected to a rotating block (329).

8. The precision control system for a heavy-duty CNC machine tool according to claim 7, characterized in that: The AI ​​acceleration unit (338) is located to the left of the comparison module (336), and the instruction output module (337) is located to the upper right of the data storage module (335).

9. A method for precision control of a heavy-duty CNC machine tool, used to implement the precision control system for a heavy-duty CNC machine tool as described in claim 8, characterized in that: Includes the following steps: Step 1: Monitoring; Before machining the heavy-duty CNC machine tool body (1), the temperature change of the spindle (4) at different speeds, different running times and different temperatures is monitored in real time through the cooperation of the monitoring mechanism (3) and the temperature measuring ring (5); Step 2: Data integration; The control mechanism (33) integrates the temperature changes of the spindle (4) at different speeds, different running times and different temperatures, controls the heavy-duty CNC machine tool body (1) and adjusts the motion state of the spindle (4), and performs one control on the accuracy of the heavy-duty CNC machine tool body (1); Step 3: Compensation; The compensation mechanism (2) generates a compensation force opposite to the centrifugal force of the spindle (4) to control the accuracy of the heavy-duty CNC machine tool body (1) again. Step 4: Vibration reduction; The vibration reduction mechanism (32) weakens the intensity of the vibration transmitted to the ground, reduces the possibility of the ground vibration being transmitted back to the heavy CNC machine tool body (1), and performs final control on the accuracy of the heavy CNC machine tool body (1).

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