Multi-axis numerical control machine tool

Abstract

The invention discloses a multi-axis numerical control machine tool, and relates to the technical field of numerical control machine tools. The device comprises a machine body and mounting frames, the mounting frames are evenly distributed at the top of the machine body, the bottoms of the mounting frames are hinged to the machine body, rotation driving assemblies are arranged on the inner sides of the mounting frames, and displacement assemblies are arranged between the rotation driving assemblies and the mounting frames. The displacement assembly is used for driving the rotary driving assembly to move relative to the mounting frame, a screw tap is mounted at the bottom of the rotary driving assembly, the rotary driving assembly is used for driving the screw tap to rotate, and first threaded rods are rotationally connected to the positions, flush with the mounting frame, of the bottom of the machine body. According to the multi-shaft tapping machine, screw taps of different specifications are installed on multiple shafts, the practicability is improved, meanwhile, the stability of tapping operation is improved, the effect of reducing the speed and increasing the torque of the screw taps can be achieved in the tapping process, it is guaranteed that tapping is conducted stably, and the tapping efficiency is improved.

Description

A multi-axis CNC machine tool Technical Field

[0001] This invention relates to the field of CNC machine tool technology, and more specifically to a multi-axis CNC machine tool. Background Technology

[0002] A CNC machine tool is an automated machine tool equipped with a program control system, used to process metal or other material blanks. A CNC tapping machine is a type of CNC machine tool. However, existing CNC tapping machines often need to meet the tapping requirements of different specifications. Therefore, single-axis CNC tapping machines have limited applications because they use a single specification of tap and cannot meet the diverse needs of users. Thus, a multi-axis CNC machine tool is needed to realize multi-axis tapping operations.

[0003] For example, Chinese invention patent CN109093210B discloses a multi-axis tapping machine with a simple structure, convenient operation, and multiple axes that can be equipped with taps of different specifications to meet different working conditions. It has a wide range of applications and high working efficiency.

[0004] Based on the above patents and existing technologies, the existing multi-axis CNC tapping machine tools still have the following shortcomings in use: 1. Although the above patents have enabled the installation of taps of different specifications on multiple axes, the switching of taps is driven by the meshing of gears to rotate the large gear. It is difficult to accurately ensure that the tap that follows the large gear to the bottom is in a vertical downward position. Moreover, the positioning and driving rotation of the tap are only achieved through the cooperation of the insert and slot. The stability of the tap positioning and driving rotation is poor. Therefore, the stability in the tapping process needs to be improved.

[0005] 2. Existing CNC tapping machines all use motors to drive the installed taps to rotate. However, they cannot change the speed and torque of the tap during the tapping process. As tapping progresses, the friction between the tap and the workpiece gradually increases, and the tap may even get stuck. If the same speed and torque are maintained for tapping, not only will tapping become difficult, but it will also easily damage the tap and the motor, thus failing to ensure stable tapping and reducing tapping efficiency. Summary of the Invention

[0006] The purpose of this invention is to address the problems of existing multi-axis CNC tapping machine tools, such as the need to improve stability during the tapping process, the inability to change the speed and torque of the driving tap during the tapping operation, the tendency to encounter tapping difficulties, and the risk of damage to the tap and motor, which in turn cannot guarantee stable tapping and reduce tapping efficiency. This invention provides a multi-axis CNC machine tool.

[0007] To achieve the above objectives, the present invention specifically adopts the following technical solution: a multi-axis CNC machine tool, comprising a machine body and a mounting frame, wherein the mounting frames are evenly distributed on the top of the machine body, and the bottom of the mounting frames is hinged to the machine body; a rotary drive assembly is provided on the inner side of each mounting frame; a displacement assembly is provided between each rotary drive assembly and the mounting frame; the displacement assembly is used to drive the rotary drive assembly to move relative to the mounting frame; a tap is installed at the bottom of each rotary drive assembly, and the rotary drive assembly is used to drive the tap to rotate; a threaded rod is rotatably connected to the bottom of the machine body at the point where it is aligned with the mounting frame; a slide block is slidably connected to the bottom of the machine body and outside the threaded rod; the threaded rod is threadedly connected to the slide block; and a support rod is drively connected between the top of the slide block and the outer end face of the mounting frame.

[0008] Furthermore, a motor is fixedly installed on the periphery of the machine body at a location aligned with the outer end of the threaded rod, and the motor is connected to the threaded rod in a transmission manner. One end of the support rod is hinged to the top of the slide block, and the other end is tilted inward and hinged to the outer end face of the mounting frame.

[0009] Furthermore, the top of the machine body is a downward-concave funnel shape, and a circular groove running vertically through the center of the machine body is provided. When the tap rotates to a vertical position following the mounting frame and the rotary drive assembly, the tap is aligned with the center of the circular groove.

[0010] Furthermore, the top of the machine body is provided with a mounting groove at the point where it is aligned with the mounting frame. The mounting frame is hinged between the inner sides of the mounting groove by pins at both ends of the bottom outer side. A pressure sensor is installed on the top end face of the outer side of the mounting groove. The pressure sensor is used to identify whether the mounting frame is tilted outward to contact the top end face of the outer side of the mounting groove.

[0011] Furthermore, the bottom of the mounting frame is provided with an inwardly extending limiting block, which is perpendicular to the mounting frame. When the limiting block rotates with the mounting frame until it is pressed and attached to the bottom of the mounting groove, the mounting frame is in a vertical state.

[0012] Furthermore, the displacement assembly includes a connecting seat, a second threaded rod, and a second motor. The connecting seat is slidably connected to the inside of the top of the mounting frame with upper and lower limits, and the connecting seat extends inward and is fixedly installed with the rotation drive assembly. The second threaded rod is rotatably connected to the inside of the top of the mounting frame, and the second threaded rod passes through the connecting seat and is threadedly connected to the connecting seat. The second motor is fixedly installed at the top of the mounting frame, and the second motor is drively connected to the second threaded rod.

[0013] Furthermore, the rotary drive assembly includes a mounting cylinder, which is fixedly installed inside the connecting seat. The transmission box is fixedly installed at the bottom end of the mounting cylinder. The limiting cylinder is fixedly installed inside the bottom end of the transmission box. The drive wheel is rotatably connected to the outside of the transmission box via a bearing. The driven wheel is rotatably connected to the inside of the transmission box via a bearing. The steel belt drive is connected between the drive wheel and the driven wheel. The lower movable cone wheel is slidably and vertically fitted on the outside of the bottom of the driven wheel. The rotating roller is slidably and vertically fitted on the outside of the bottom of the driven wheel. The rotating roller is located below the lower movable cone wheel and extends downward to below the limiting cylinder. The limiting cylinder limits the top of the rotating roller. Spring one is fixedly connected between the bottom end of the lower movable cone wheel and the top end of the rotating roller. The upper movable cone wheel is slidably and vertically fitted on the outside of the top of the drive wheel. Spring two is limited and installed between the bottom end of the upper movable cone wheel and the drive wheel.

[0014] Furthermore, an oil injection nozzle is installed on the top of the transmission box, which is used to inject lubricating oil into the transmission box.

[0015] Furthermore, the rotary drive assembly also includes a hydraulic torque converter, a third motor, and a coupling. The hydraulic torque converter is fixedly installed inside the mounting cylinder, the third motor is fixedly installed at the top of the mounting cylinder, and the bottom of the third motor is connected to the input shaft at the top of the hydraulic torque converter via the coupling. The output shaft at the bottom of the hydraulic torque converter is connected to the drive wheel. The mounting cylinder adopts a two-part assembly design. The hydraulic torque converter has mounting ears welded to its periphery. While the upper and lower parts of the mounting cylinder are fixed by bolts, the hydraulic torque converter is fixedly installed and limited between the joints of the mounting cylinder by the mounting ears.

[0016] Furthermore, the rotary drive assembly also includes a mounting head, which is fixedly mounted on the bottom of the roller, and the tap is fixedly mounted at the center of the bottom of the roller via the mounting head.

[0017] The beneficial effects of the present invention are as follows: 1. The present invention, through the design of multiple sets of rotary drive components on the top of the machine body, can realize the installation of taps of different specifications on multiple axes, improving practicality. At the same time, by using the rotation of the drive thread rod and the support rod, the rotary drive component with the tap installed can be selectively tilted inward. With the help of the bottom limit block of the mounting frame, the rotary drive component and the tap are better kept in a vertical state. Therefore, the positioning of the tap and the rotation of the tap driven by the rotary drive component are more stable, improving the stability of the tapping operation.

[0018] 2. This invention, through the design of the rotary drive assembly, utilizes the steel belt transmission connection between the drive wheel and the driven wheel inside the limiting cylinder, and the change in the transmission ratio between the drive wheel and the driven wheel during the tapping process. This achieves the effect of slowing down and increasing the torque of the tap during the tapping process, which is more conducive to subsequent tapping, avoids tapping difficulties and tap jamming, ensures stable tapping, improves tapping efficiency, and also avoids damage to the tap and motor caused by tap jamming. Attached Figure Description

[0019] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a three-dimensional structural schematic diagram of the present invention; Figure 3 is a three-dimensional structural schematic diagram of the present invention; Figure 4 is a partial cross-sectional three-dimensional structural schematic diagram of the present invention; Figure 5 is a three-dimensional structural schematic diagram of the connection between a single mounting frame and the rotary drive assembly of the present invention; Figure 6 is a cross-sectional three-dimensional structural schematic diagram of the rotary drive assembly and the mounting frame of the present invention; Figure 7 is a three-dimensional structural schematic diagram of the rotary drive assembly of the present invention; Figure 8 is a three-dimensional structural schematic diagram of the rotary drive assembly of the present invention; Figure 9 is a partial cross-sectional three-dimensional structural schematic diagram of the rotary drive assembly of the present invention; Figure 10 is a partial cross-sectional three-dimensional structural schematic diagram of the driven wheel and tap installation of the present invention; Figure 11 is an exploded view of the three-dimensional structure of the driven wheel and tap installation of the present invention; Figure 12 is a partial cross-sectional three-dimensional structural schematic diagram of the drive wheel of the present invention; Figure 13 is a cross-sectional three-dimensional structural schematic diagram of the mounting cylinder of the present invention; Figure 14 is an exploded view of the three-dimensional structure of the mounting cylinder of the present invention; Figure 15 is a three-dimensional structural schematic diagram of the hydraulic torque converter installation of the present invention; Figure 16 is a three-dimensional structural schematic diagram of the present invention; Figure 17 is a three-dimensional structural schematic diagram of the present invention.

[0020] Reference numerals: 1. Machine body; 101. Mounting slot; 102. Pressure sensor; 2. Mounting frame; 201. Limiting block; 3. Rotary drive assembly; 301. Mounting cylinder; 302. Transmission box; 303. Limiting cylinder; 304. Drive wheel; 305. Driven wheel; 306. Steel belt; 307. Lower movable cone wheel; 308. Rotary roller; 309. Spring one; 3010. Upper movable cone wheel; 3011. Spring two; 3012. Hydraulic torque converter; 30121. Mounting ear; 3013. Motor three; 3014. Coupling; 3015. Mounting head; 4. Displacement assembly; 401. Connecting seat; 402. Threaded rod two; 403. Motor two; 5. Tap; 6. Threaded rod one; 7. Slide; 8. Support rod; 9. Motor one; 10. Circular groove; 11. Conveying groove. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0022] A preferred embodiment of the present invention, a multi-axis CNC machine tool, will be described in detail below: Embodiment 1 As shown in Figures 1-3 and 5, a multi-axis CNC machine tool includes a body 1 and a mounting frame 2. The mounting frames 2 are evenly distributed on the top of the body 1, and the bottom of the mounting frames 2 is hinged to the body 1. A rotary drive assembly 3 is provided on the inner side of each mounting frame 2. A displacement assembly 4 is provided between the rotary drive assembly 3 and the mounting frame 2. The displacement assembly 4 is used to drive the rotary drive assembly 3 to move relative to the mounting frame 2. A tap 5 is installed at the bottom of the rotary drive assembly 3, and the rotary drive assembly 3 is used to drive the tap 5 to rotate.

[0023] As shown in Figures 4 and 5, threaded rods 6 are rotatably connected to the bottom of the machine body 1, aligned with the mounting frame 2. Slide seats 7 are slidably connected to the bottom of the machine body 1, located outside the threaded rods 6. The threaded rods 6 and slide seats 7 are threadedly connected, so when the threaded rods 6 rotate, they can move the slide seats 7. A motor 9 is fixedly installed on the outer periphery of the machine body 1, aligned with one end of the outer side of the threaded rods 6. The motor 9 is drively connected to the threaded rods 6, driving the threaded rods 6 to rotate.

[0024] A support rod 8 is connected between the top of the slide 7 and the outer end face of the mounting frame 2. One end of the support rod 8 is hinged to the top of the slide 7, and the other end is tilted inward and hinged to the outer end face of the mounting frame 2. Therefore, when the slide 7 moves at the bottom of the body 1, the mounting frame 2 can be tilted and rotated by pushing or pulling it through the support rod 8. (It should be noted that the length of the support rod 8 is greater than the length from the hinge point between the support rod 8 and the mounting frame 2 to the hinge point between the mounting frame 2 and the body 1, so that the support rod 8 can push the mounting frame 2 to a vertical position.)

[0025] As shown in Figures 2 and 3, the top of the machine body 1 is a downward-concave funnel shape, and a through-hole circular groove 10 is provided in the center of the machine body 1. When the tap 5 rotates to a vertical position with the mounting frame 2 and the rotary drive assembly 3, the center of the tap 5 is aligned with the center of the circular groove 10. Therefore, after the machine body 1 is installed with the machine tool, the workpiece can be installed from above or below the center of the circular groove 10 in conjunction with the machine tool, thereby enabling the tap 5, which is in a vertical position, to perform the tapping operation.

[0026] As shown in Figures 1 and 2, mounting grooves 101 are provided at the top of the machine body 1 where they are aligned with the mounting frames 2. The mounting frames 2 are hinged together at the bottom outer ends of the mounting grooves 101 to limit their movement, thus improving the stability of the mounting frames 2 during tilting and rotation. A pressure sensor 102 is installed on the top surface of the outer side of the mounting groove 101. The pressure sensor 102 is used to identify whether the mounting frames 2 have tilted outward to contact the top surface of the outer side of the mounting groove 101. Therefore, it can identify whether the mounting frames 2 and the rotary drive assembly 3 have tilted outward to return to their original positions. (It should be noted that, under the control of the CNC machine tool, if not all mounting frames 2 have been identified as tilted outward to return to their original positions, the motor 9 will not be activated to push the mounting frames 2 inward, thereby avoiding the collision of the tool.)

[0027] As shown in Figure 5, the bottom of the mounting frame 2 is provided with an inwardly extending limiting block 201. The limiting block 201 is perpendicular to the mounting frame 2. When the limiting block 201 rotates with the mounting frame 2 until it is pressed against the bottom end of the mounting groove 101, the mounting frame 2 is in a vertical state, thereby improving the stability of the mounting frame 2 in a vertical state. (It should be noted that: the mutual attachment points of the limiting block 201 and the bottom end of the mounting groove 101 are fixedly clamped with a gasket made of high chromium cast iron material, thereby improving the hardness and wear resistance of the contact point between the limiting block 201 and the bottom end of the mounting groove 101, and can also be replaced, ensuring the effect of keeping the mounting frame 2 in a vertical state by limiting the limiting block 201.)

[0028] Further, as shown in Figures 5 and 6, the principle by which the displacement component 4 drives the rotary drive component 3 to move relative to the mounting frame 2 is as follows: The displacement component 4 includes a connecting seat 401, a threaded rod 402, and a motor 403. The connecting seat 401 is slidably connected to the upper and lower limits inside the top of the mounting frame 2, and the connecting seat 401 extends inward and is fixedly installed with the rotary drive component 3. In this embodiment, the connecting seat 401 is fixedly installed with the outer wall of the mounting cylinder 301 in the rotary drive component 3. Therefore, when the connecting seat 401 moves up and down, it can drive the rotary drive component 3 to move up and down.

[0029] The second threaded rod 402 is rotatably connected to the inside of the top of the mounting frame 2, and the second threaded rod 402 passes through the connecting seat 401 and is threadedly connected to the connecting seat 401. The second motor 403 is fixedly installed at the top of the mounting frame 2, and the second motor 403 is connected to the second threaded rod 402 for transmission. The second motor 403 drives the second threaded rod 402 to rotate, and during the rotation of the second threaded rod 402, it can drive the connecting seat 401 to move up and down.

[0030] Working principle: When in use, after the machine body 1 and the machine tool are installed, taps 5 of different specifications can be fixedly installed at the bottom of the rotary drive assembly 3, and then the workpiece is installed at the center of the circular groove 10 by the machine tool.

[0031] Depending on the tapping specifications of the workpiece, the corresponding motor 9 drives the threaded rod 6 to rotate. During the rotation of the threaded rod 6, the threaded connection between the threaded rod 6 and the slide 7 drives the slide 7 to move inward. During the inward movement of the slide 7, the support rod 8 pushes the mounting frame 2 to rotate inward, thereby driving the rotary drive assembly 3 to rotate inward. With the limiting action of the limit block 201, the mounting frame 2 and the rotary drive assembly 3 are rotated to a vertical position, so that the tap 5 that matches the workpiece is vertically downward and aligned with the workpiece.

[0032] During tapping, the tap 5 is rotated by the rotary drive assembly 3, and the thread rod 402 is rotated by the motor 403. During the rotation of the thread rod 402, the threaded connection between the thread rod 402 and the connecting seat 401 causes the connecting seat 401 to move downward, which in turn causes the rotary drive assembly 3 to move downward. This, in conjunction with the rotation of the tap 5, completes the tapping operation. After tapping is completed, the reverse rotation of the thread rod 402 is driven by the motor 403, and the reverse rotation of the tap 5 is driven by the rotary drive assembly 3, so that the tap 5 is disengaged from the workpiece.

[0033] When it is necessary to switch to taps 5 of different specifications, the reverse rotation of the thread rod 6 driven by motor 9 is used to first tilt the vertical mounting frame 2 and the rotary drive assembly 3 outward to return to their original positions. Then, the corresponding motor 9 on the corresponding side is used to make the tap 5 of the correct specifications follow the mounting frame 2 and the rotary drive assembly 3 to rotate to a vertical position for a new round of tapping operations.

[0034] In a further embodiment, the principle by which the rotary drive assembly 3 drives the tap 5 to rotate is as follows: As shown in Figures 7-12, the rotary drive assembly 3 includes a mounting cylinder 301, which is fixedly installed inside the connecting seat 401. A transmission box 302 is fixedly installed at the bottom end of the mounting cylinder 301. A limiting cylinder 303 is fixedly installed inside the bottom end of the transmission box 302. A drive wheel 304 is rotatably connected to the outside of the transmission box 302 via a bearing. A driven wheel 305 is rotatably connected to the inside of the transmission box 302 via a bearing. A steel belt 306 drives the drive wheel 304 and the driven wheel 305. Therefore, through the action of the steel belt 306, when the drive wheel 304 rotates, it can drive the driven wheel 305 to rotate.

[0035] The lower movable cone wheel 307 is slidably sleeved on the outer side of the bottom of the driven wheel 305, and the rotating roller 308 is slidably sleeved on the outer side of the bottom of the driven wheel 305. The rotating roller 308 is located below the lower movable cone wheel 307 and extends downward to below the limiting cylinder 303. The limiting cylinder 303 limits the top of the rotating roller 308. Spring 309 is fixedly connected between the bottom end of the lower movable cone wheel 307 and the top end of the rotating roller 308. Therefore, when the driven wheel 305 rotates, it can drive the lower movable cone wheel 307 and the rotating roller 308 to rotate synchronously. At the same time, the rotating roller 308 can move up and down relative to the bottom of the driven wheel 305, and thus, the lower movable cone wheel 307 can also move up and down relative to the driven wheel 305 through the spring 309.

[0036] The upper movable cone wheel 3010 is slidably sleeved on the outer side of the top of the drive wheel disk 304, and the second spring 3011 is installed between the bottom of the upper movable cone wheel 3010 and the drive wheel disk 304. Therefore, while the drive wheel disk 304 can drive the upper movable cone wheel 3010 to rotate synchronously, the upper movable cone wheel 3010 can move elastically up and down relative to the drive wheel disk 304 through the action of the second spring 3011.

[0037] As shown in Figures 7 and 9, an oil filler is installed on the top of the transmission box 302, which is used to inject lubricating oil into the transmission box 302. Therefore, the transmission box 302 is filled with lubricating oil, so that the transmission between the drive wheel 304 and the driven wheel 305 via the steel belt 306 is in an environment containing lubricating oil, thereby reducing wear and avoiding frictional high temperatures.

[0038] As shown in Figures 13-15, the rotary drive assembly 3 also includes a hydraulic torque converter 3012, a motor 3013, and a coupling 3014. The hydraulic torque converter 3012 is fixedly installed inside the mounting cylinder 301, and the motor 3013 is fixedly installed at the top of the mounting cylinder 301. The bottom of the motor 3013 is connected to the input shaft at the top of the hydraulic torque converter 3012 via the coupling 3014, and the output shaft at the bottom of the hydraulic torque converter 3012 is connected to the drive wheel 304. The coupling 3014 transmits the torque of the motor 3013 to the input shaft at the top of the hydraulic torque converter 3012, and then transmits the torque to the drive wheel 304 via the output shaft at the bottom of the hydraulic torque converter 3012, thereby driving the drive wheel 304 to rotate. The coupling 3014 improves the stability of torque transmission between the motor 3013 and the hydraulic torque converter 3012, preventing eccentric rotation due to installation deviations. The torque converter 3012 increases the torque transmitted by the motor 3013, making it more suitable for driving the tap 5 to rotate for tapping, while also buffering the vibration and impact generated during the tapping process.

[0039] The mounting cylinder 301 adopts a two-part assembly design. The hydraulic torque converter 3012 has mounting ears 30121 welded to its periphery. While the upper and lower parts of the mounting cylinder 301 are fixed together with bolts, the hydraulic torque converter 3012 is also fixed and positioned within the connection point of the mounting cylinder 301 using the mounting ears 30121. This facilitates the assembly of the mounting cylinder 301 and the hydraulic torque converter 3012, promotes centered installation of the hydraulic torque converter 3012 within the mounting cylinder 301, and improves the stability of the hydraulic torque converter 3012 installation.

[0040] As shown in Figures 9-11, the rotary drive assembly 3 also includes a mounting head 3015, which is fixedly mounted on the bottom of the rotary roller 308. The tap 5 is fixedly mounted on the center of the bottom of the rotary roller 308 via the mounting head 3015. This facilitates the installation and replacement of the tap 5 at the bottom of the rotary drive assembly 3.

[0041] Working principle: When the tap 5 needs to be rotated for tapping, the torque is transmitted to the hydraulic torque converter 3012 by the motor 3013 and the coupling 3014. Then, the hydraulic torque converter 3012 drives the drive wheel 304 inside the transmission box 302 to rotate. When the drive wheel 304 rotates, the steel belt 306 drives the driven wheel 305 to rotate, which in turn drives the roller 308 to rotate, thereby driving the tap 5 fixedly installed by the mounting head 3015 to rotate.

[0042] When the tap 5 is driven to move down to tap, as the tap 5 enters the workpiece and the tapping depth increases, the friction between the tap 5 and the workpiece gradually increases, and the tapping difficulty also gradually increases. If the tap 5 is driven to move down, the roller 308 will move upward under the action of the reaction force, which will compress the spring 309 and push the movable cone wheel 307 to move upward.

[0043] As the lower movable cone wheel 307 moves upward, the upper movable cone wheel 3010, under the action of spring 3011, slides elastically with the drive wheel 304 at its upper and lower limits. This allows the distance between the lower movable cone wheel 307 and the cone wheel portion of the driven wheel 305 to gradually decrease. Meanwhile, under the pull of the steel belt 306, the distance between the upper movable cone wheel 3010 and the cone wheel portion of the drive wheel 304 gradually increases. This changes the transmission ratio between the drive wheel 304 and the driven wheel 305 via the steel belt 306, achieving a speed reduction and torque increase effect. This is more conducive to subsequent tapping, avoiding tapping difficulties and tap 5 jamming, ensuring stable tapping, improving tapping efficiency, and preventing damage to tap 5 and motor 3013.

[0044] After tapping is completed, when the drive rotation drive assembly 3 moves upward, the roller 308 moves downward relative to the limit cylinder 303, and then the movable cone wheel 307 moves downward by the spring 309, so that the speed of the drive tap 5 gradually increases, and the tap 5 quickly gets off the workpiece.

[0045] As shown in Figures 16-17, in Embodiment 3, unlike Embodiment 1, a conveying groove 11 extending through both sides is provided at the bottom of the machine body 1, with the center of the conveying groove 11 aligned with the circular groove 10. In this embodiment, after the machine body 1 and the machine tool are installed, the machine tool can continuously convey workpieces at the conveying groove 11, allowing each workpiece to be conveyed one by one to the center of the circular groove 10 for tapping operations. This facilitates continuous and intelligent operation of the workpiece tapping process.

[0046] 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 multi-axis CNC machine tool, comprising a machine body (1) and a mounting frame (2), characterized in that, The mounting frames (2) are evenly distributed on the top of the body (1), and the bottom of the mounting frames (2) is hinged to the body (1). The inner side of the mounting frames (2) is provided with a rotary drive assembly (3). The rotary drive assembly (3) and the mounting frame (2) are provided with a displacement assembly (4). The displacement assembly (4) is used to drive the rotary drive assembly (3) to move relative to the mounting frame (2). The bottom of the rotary drive assembly (3) is provided with a tap (5). The rotary drive assembly (3) is used to drive the tap (5) to rotate. The bottom of the body (1) and the mounting frame (2) are rotatably connected with a threaded rod (6). The bottom of the body (1) and the outside of the threaded rod (6) are slidably connected with a slide block (7). The threaded rod (6) and the slide block (7) are threadedly connected. The top of the slide block (7) and the outer end face of the mounting frame (2) are connected by a support rod (8).

2. The multi-axis CNC machine tool according to claim 1, characterized in that, A motor (9) is fixedly installed on the periphery of the body (1) at a position aligned with the outer end of the threaded rod (6), and the motor (9) is connected to the threaded rod (6) in a transmission manner. One end of the support rod (8) is hinged to the top of the slide (7), and the other end is hinged to the outer end face of the mounting frame (2) after tilting inward.

3. The multi-axis CNC machine tool according to claim 1, characterized in that, The top of the body (1) is a downward-concave funnel shape, and a circular groove (10) that runs through the body (1) is provided in the center. When the tap (5) rotates to a vertical position with the mounting frame (2) and the rotary drive assembly (3), the center of the tap (5) is aligned with the center of the circular groove (10).

4. The multi-axis CNC machine tool according to claim 1, characterized in that, The top of the body (1) and the mounting frame (2) are provided with mounting grooves (101). The mounting frames (2) are connected to each other in the mounting grooves (101) by pins at both ends of the bottom outer side. A pressure sensor (102) is installed on the top end face of the outer side of the mounting groove (101). The pressure sensor (102) is used to identify whether the mounting frame (2) is tilted outward to contact the top end face of the outer side of the mounting groove (101).

5. The multi-axis CNC machine tool according to claim 4, characterized in that, The bottom of the mounting frame (2) is provided with an inwardly extending limiting block (201). The limiting block (201) is perpendicular to the mounting frame (2). When the limiting block (201) rotates with the mounting frame (2) to press against the bottom of the mounting groove (101), the mounting frame (2) is in a vertical state.

6. The multi-axis CNC machine tool according to claim 1, characterized in that, The displacement component (4) includes a connecting seat (401), a threaded rod (402), and a motor (403). The connecting seat (401) is slidably connected to the inside of the top of the mounting frame (2) with upper and lower limits. The connecting seat (401) extends inward and is fixedly installed with the rotation drive component (3). The threaded rod (402) is rotatably connected to the inside of the top of the mounting frame (2). The threaded rod (402) passes through the connecting seat (401) and is threadedly connected to the connecting seat (401). The motor (403) is fixedly installed at the top of the mounting frame (2) and is connected to the threaded rod (402) in a transmission manner.

7. The multi-axis CNC machine tool according to claim 6, characterized in that, The rotary drive assembly (3) includes: a mounting cylinder (301), which is fixedly mounted on the inner side of the connecting seat (401); a transmission box (302), which is fixedly mounted on the bottom end of the mounting cylinder (301); a limiting cylinder (303), which is fixedly mounted on the inner side of the bottom end of the transmission box (302); a drive wheel (304), which is rotatably connected to the outer side of the transmission box (302) via a bearing; a driven wheel (305), which is rotatably connected to the inner side of the transmission box (302) via a bearing; a steel belt (306), which is rotatably connected between the drive wheel (304) and the driven wheel (305); and a lower movable cone wheel (307), which is rotatably connected to the upper and lower limits of the sliding mechanism. The moving sleeve is mounted on the outer side of the bottom of the driven wheel (305); the rotating roller (308) is slidably mounted on the outer side of the bottom of the driven wheel (305) with upper and lower limits, the rotating roller (308) is located below the lower movable cone wheel (307), and the rotating roller (308) extends downward to the lower side of the limiting cylinder (303), the limiting cylinder (303) limits the top of the rotating roller (308); the first spring (309) is fixedly connected between the bottom end of the lower movable cone wheel (307) and the top end of the rotating roller (308); the upper movable cone wheel (3010) is slidably mounted on the outer side of the top of the drive wheel (304) with upper and lower limits; the second spring (3011) is limited and installed between the bottom end of the upper movable cone wheel (3010) and the drive wheel (304).

8. The multi-axis CNC machine tool according to claim 7, characterized in that, The top of the transmission box (302) is equipped with an oil injection nozzle, which is used to inject lubricating oil into the transmission box (302).

9. The multi-axis CNC machine tool according to claim 7, characterized in that, The rotary drive assembly (3) further includes a hydraulic torque converter (3012), a motor (3013), and a coupling (3014). The hydraulic torque converter (3012) is fixedly installed inside the mounting cylinder (301). The motor (3013) is fixedly installed at the top of the mounting cylinder (301), and the bottom of the motor (3013) is connected to the input shaft at the top of the hydraulic torque converter (3012) via the coupling (3014). The output shaft at the bottom of the hydraulic torque converter (3012) is connected to the drive wheel (304). The mounting cylinder (301) adopts a two-part assembly design. The hydraulic torque converter (3012) is welded with mounting ears (30121) on its periphery. While the upper and lower parts of the mounting cylinder (301) are fixed with bolts, the hydraulic torque converter (3012) is fixedly installed between the connection points of the mounting cylinder (301) via the mounting ears (30121).

10. The multi-axis CNC machine tool according to claim 7, characterized in that, The rotary drive assembly (3) also includes a mounting head (3015), which is fixedly mounted on the bottom of the roller (308), and the tap (5) is fixedly mounted at the center of the bottom of the roller (308) via the mounting head (3015).

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