A machining center with a multi-axis conversion platform

Abstract

This invention discloses a machining center with a multi-axis conversion platform, comprising a base, a vertical column, and a worktable. The vertical column is equipped with a first moving mechanism for vertical movement, the first moving mechanism having a first slide table, and the first slide table having a machining spindle. The worktable is equipped with a second moving mechanism, the second moving mechanism having a second slide table, the second slide table having a third moving mechanism, the third moving mechanism having a third slide table, the third slide table having a tilt adjustment mechanism, the tilt adjustment mechanism having a flipping mechanism, the flipping mechanism having a rotating mechanism, and the rotating mechanism having a clamping fixture. This invention enables simultaneous lateral, longitudinal, and vertical movement, as well as multiple controllable degrees of freedom of motion, including tilting and swinging around a horizontal axis, flipping around another horizontal axis, and rotating around a vertical axis. This allows for continuous machining of complex contours of the clamped workpiece without disassembly, improving machining efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of machine tools, and more specifically to a machining center with a multi-axis conversion platform. Background Technology

[0002] In the field of machining, machining centers, as automated equipment integrating multiple machining functions such as drilling, milling, and boring, are widely used in the processing of complex workpieces in industries such as aerospace, automotive parts, and precision instruments. However, as industrial production demands increasing workpiece precision, processing efficiency, and versatility, the limitations of traditional machining centers are becoming increasingly apparent.

[0003] Common machining centers typically possess the ability to move along three linear axes (X, Y, and Z) to achieve three-axis machining of workpieces. However, for more complex workpieces, such as those with inclined surfaces, curved contours, or deep grooves, simple three-axis motion often falls short of the requirement to complete all machining in a single setup. Existing technologies typically employ the following methods to address the machining of complex workpieces: 1. Using machining centers with rotary axes (such as five-axis centers), whose spindles or worktables can oscillate at angles. However, these machine tools are complex in structure, expensive, and lack flexibility for specific working conditions requiring multi-angle adjustments to the workpiece itself; 2. Installing additional adjustable angle fixtures or jigs on the worktable of a standard three-axis machining center, positioning the workpiece by pre-adjusting and fixing the fixture's angle. While this method is less expensive, during machining, if the workpiece angle needs to be changed, the machine must be stopped, the workpiece disassembled, and the fixture readjusted or replaced. This process is cumbersome, inefficient, and makes it difficult to guarantee repeatability, increasing the risk of human error. Furthermore, frequent setup and disassembly increase the workload of operators. Summary of the Invention

[0004] This invention addresses the shortcomings of current technology by providing a machining center with a multi-axis conversion platform, aiming to solve the technical problem that existing machining centers cannot achieve multi-axis motion machining of workpieces.

[0005] The technical solution adopted by the present invention to achieve the above objectives is as follows: A machining center with a multi-axis conversion platform includes a base, the base having a vertical column and a worktable, the vertical column being positioned behind the worktable, the vertical column having a first moving mechanism for vertical movement, the first moving mechanism having a first slide, and the first slide having a machining spindle for clamping cutting tools.

[0006] As a further improvement, the worktable is provided with a second moving mechanism arranged longitudinally, the second moving mechanism is provided with a second slide, the second slide is provided with a third moving mechanism arranged laterally, the third moving mechanism is provided with a third slide, the third slide is provided with a tilt adjustment mechanism, the tilt adjustment mechanism is provided with a platform, the platform is provided with a flipping mechanism, the flipping mechanism is provided with a rotating mechanism, and the rotating mechanism is provided with a clamp for fixing the workpiece.

[0007] As a further improvement, the third slide is provided with multiple mounting ports, the tilt adjustment mechanism includes multiple hydraulic cylinders, each hydraulic cylinder is provided with a lifting rod, the top of each lifting rod is provided with a ball connecting part, the bottom of the platform is provided with multiple ball grooves, the ball connecting parts are respectively arranged in the ball grooves to form a sliding connection, and a pad is provided between the ball connecting part and the ball groove.

[0008] As a further improvement, the platform is provided with two oppositely arranged mounting seats, each of which is provided with a first bearing, and each of the first bearings is provided with a first rotating shaft. The flipping mechanism includes a first servo motor and a first platform. The first servo motor is fixedly mounted on one of the mounting seats, and the drive end of the first servo motor is fixedly connected to the first rotating shaft. The two ends of the first platform are provided with connecting blocks that are fixedly connected to the ends of the first rotating shaft. The rotating mechanism is disposed within the first platform.

[0009] As a further improvement, the rotating mechanism includes a rotating shaft and a second servo motor. The first platform has two mounting holes respectively located at the center and one end. The mounting hole located at the center is equipped with a harmonic reducer. The rotating shaft is mounted on the harmonic reducer. The second servo motor is mounted in the other mounting hole. Both the harmonic reducer and the second servo motor are equipped with synchronous pulleys. A meshing synchronous belt is sleeved between the synchronous pulleys. The top of the rotating shaft is equipped with a mounting base.

[0010] As a further improvement, the clamp is mounted on the mounting base, and a detachable connection structure is provided between the clamp and the mounting base. The detachable connection structure can be one of a screw locking structure or a snap-fit ​​connection mechanism, and the clamp is a multi-jaw clamp.

[0011] As a further improvement, the second moving mechanism includes two opposing second slide rails and a second lead screw module. The two second slide rails are fixedly mounted on the worktable. The second lead screw module is equipped with a servo motor. Each of the second slide rails is equipped with two second sliders. The second slide table is fixedly mounted on the second sliders. The second lead screw module is equipped with a second lead screw nut seat. The second lead screw nut seat is fixedly connected to the bottom of the second slide table.

[0012] As a further improvement, the third moving mechanism includes two opposing third slide rails and a third lead screw module. The two third slide rails are fixedly mounted on the second slide platform. The second lead screw module is equipped with a servo motor. Each of the third slide rails is equipped with two third sliders. The third slide platform is fixedly mounted on the third sliders. The third lead screw module is equipped with a third lead screw nut seat. The third lead screw nut seat is fixedly connected to the bottom of the third slide platform.

[0013] As a further improvement, the first moving mechanism includes two opposing first slide rails and a first lead screw module. The two first slide rails are fixedly mounted on the upright. The first lead screw module is equipped with a servo motor. Each of the first slide rails is equipped with two first sliders. The first slide table is fixedly mounted on the first sliders. The first lead screw module is equipped with a first lead screw nut seat. The first lead screw nut seat is fixedly connected to the bottom of the first slide table. The first slide table is equipped with a saddle. The saddle has an arc structure at the connection point with the first slide table. The saddle is equipped with a spindle box. The machining spindle is mounted on the spindle box.

[0014] As a further improvement, the machining spindle includes a spindle, a servo motor and a geared motor. One end of the spindle is provided with a linkage gear, and the geared motor is provided with a gear. The gear and the gear are meshed together. The drive end of the servo motor and one end of the spindle are also provided with a synchronous pulley. The two synchronous pulleys are meshed together by a synchronous belt.

[0015] As a further improvement, both the platform and the first platform are provided with an installation port, and a level is provided in each of the installation ports. Distance sensors are provided on the left and right bottom surfaces of the platform, and distance sensors are provided on the front and rear sides of the first platform. A horizontal detection and processing controller is provided on the side of the upright, and the horizontal detection and processing controller is electrically connected to the distance sensors and the first distance sensor.

[0016] As a further improvement, louvered covers are provided between the workbench and the second slide, between the second slide and the third slide, and between the first slide and the upright.

[0017] The beneficial effects of this invention are as follows: This invention establishes a first movable mechanism to realize the lifting action of the machining spindle, and sets up a second and third movable mechanism to realize the lateral and longitudinal movement of the workpiece. Combined with a tilting adjustment mechanism, a flipping mechanism, and a rotating mechanism, it constitutes a composite multi-axis conversion platform. This platform can drive the workpiece to move in the lateral, longitudinal, and vertical directions while realizing multiple controllable degrees of freedom of motion, including tilting and swinging around a horizontal axis, flipping around another horizontal axis, and rotating around a vertical axis. This allows the clamped workpiece to be continuously machined with complex contours (such as arc-shaped deep grooves, polyhedra, and irregular curved surfaces) without disassembly. Since the workpiece can be adjusted to any desired machining angle after being clamped once, the cumbersome steps of multiple stops, disassembly, reassembly, and fixture changes required by angle changes in traditional methods are completely avoided. This not only greatly shortens auxiliary time and improves overall machining efficiency, but also reduces the labor intensity of operators and the requirements for operating skills, making the machining of complex workpieces more convenient.

[0018] By setting up a distance measuring sensor, a distance measuring sensor 1, and a horizontal detection and processing controller, the tilt adjustment data of the platform and the flip angle data of the first platform are monitored in real time. After processing the data, the controller can feed back to the main control system and drive the corresponding adjustment mechanism, such as a hydraulic cylinder or a servo motor, to automatically level or reset to a preset angle. This simplifies equipment preparation and reset operations, improves adjustment accuracy and speed, and enhances the intelligence level and stability of the equipment.

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the machining center with a multi-axis conversion platform in this embodiment; Figure 2 This is an exploded view of the machining center with a multi-axis conversion platform according to this embodiment; Figure 3 This is a schematic diagram of the structure of the third slide in this embodiment; Figure 4 This is a bottom view of the platform in this embodiment; Figure 5 This is a partial cross-sectional view of the connection between the sphere connector and the platform in this embodiment. Detailed Implementation

[0022] The following description is only a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0023] For examples, see the appendix. Figures 1-5 A machining center 1 with a multi-axis conversion platform includes a base 2, the base 2 having a vertical rod 3 and a worktable 4. The vertical rod 3 is located behind the worktable 4 and has a first moving mechanism 5 for vertical movement. The first moving mechanism 5 has a first slide 50 and a machining spindle 6 for clamping tools. The worktable 4 has a longitudinally arranged second moving mechanism 7 and a second slide 70. The second slide 70 has a transversely arranged third moving mechanism 8 and a third slide 80. The third slide 80 has a tilt adjustment mechanism 9 and a platform 90. The platform 90 has a flipping mechanism 10 and a rotating mechanism 11. The rotating mechanism 11 has a clamp 12 for fixing workpieces.

[0024] The third slide table 80 is provided with multiple mounting ports. The tilt adjustment mechanism 9 includes multiple hydraulic cylinders 91, each hydraulic cylinder 91 having a lifting rod 910. The top of each lifting rod 910 has a ball connecting part 911. The bottom of the platform 90 has multiple ball grooves 900, preferably hemispherical grooves. The ball connecting parts 911 are respectively disposed in the ball grooves 900 to form a sliding connection. A pad 92 is provided between the ball connecting part 911 and the ball groove 900, preferably a lubricating pad. The tilt adjustment mechanism 9 is used to control the height of the left and right sides of the platform 90, thereby adjusting the tilt angle of the workpiece according to the requirements. It works in conjunction with the flipping mechanism 10 to achieve multi-position tilt adjustment and multi-axis motion, thus enabling processing of arc-shaped deep grooves or arc-shaped contours without the need for disassembling the workpiece, changing equipment, or changing the tilt positioning fixture, thereby improving the convenience of processing.

[0025] The platform 90 is provided with two oppositely arranged mounting seats 901, each of which is provided with a first bearing. Each first bearing is provided with a first rotating shaft 902. The flipping mechanism 10 includes a first servo motor 100 and a first platform 101. The first servo motor 100 is fixedly mounted on one of the mounting seats 901, and the drive end of the first servo motor 100 is fixedly connected to the first rotating shaft 902. Both ends of the first platform 101 are provided with connecting blocks that are fixedly connected to the ends of the first rotating shaft 902. The rotating mechanism 11 is disposed in the first platform 101. The flipping mechanism 10 is used to tilt the workpiece at a certain angle, thereby cooperating with the tilt adjustment mechanism 9, the rotating mechanism 11, the second moving mechanism 7, and the third moving mechanism 8 to adjust the workpiece in multiple axes and angles. It can be used for processing workpieces with different requirements and improve processing efficiency.

[0026] The rotating mechanism 11 includes a rotating shaft 110 and a second servo motor 111. The first platform 101 has two mounting holes respectively located at the center and one end. The mounting hole located at the center is equipped with a harmonic reducer. The rotating shaft 110 is mounted on the harmonic reducer. The second servo motor 111 is mounted in the other mounting hole. Both the harmonic reducer and the second servo motor 111 are equipped with synchronous pulleys. A meshing synchronous belt is sleeved between the synchronous pulleys. The top of the rotating shaft 110 is equipped with a mounting seat 901. The rotating mechanism 11 is used to adjust the position of the workpiece on the horizontal plane. In conjunction with the second moving mechanism 7 and the third moving mechanism 8, it can perform multi-axis and positional changes of the workpiece, realize drilling and milling of workpieces with various contours or other specifications, and improve applicability.

[0027] The clamp 12 is mounted on the mounting base 901, and a detachable connection structure 13 is provided between the clamp 12 and the mounting base 901. The detachable connection structure 13 can be either a screw locking structure or a snap-fit ​​connection mechanism. The screw locking structure includes multiple threaded holes on the mounting base 901 and multiple through holes on the clamp 12, and each through hole is provided with a bolt. The snap-fit ​​connection structure includes multiple elastic snaps on the mounting base 901 and multiple snap holes on the clamp 12. The clamp 12 is a multi-jaw clamp, which can be either a mechanical multi-jaw clamp or an actuating multi-jaw clamp.

[0028] The second moving mechanism 7 includes two opposing second slide rails 71 and a second lead screw module 72. The two second slide rails 71 are fixedly mounted on the worktable 4. The second lead screw module 72 is equipped with a servo motor 73. Each of the second slide rails 71 has two second sliders. The second slide table 70 is fixedly mounted on the second sliders. The second lead screw module 72 has a second lead screw nut seat, which is fixedly connected to the bottom of the second slide table 70. The third moving mechanism 8 includes two opposing third slide rails 81 and a third lead screw module 82. The two third slide rails 81 are fixedly mounted on the second slide table 70. The third lead screw module 82 is equipped with a servo motor 83. Each of the third slide rails 81 has two third sliders. The third slide table 80 is fixedly mounted on the third sliders. The third lead screw module 82 has a third lead screw nut seat, which is fixedly connected to the bottom of the third slide table 80. The second moving mechanism 7 and the third moving mechanism 8 realize multi-axis movement of the workpiece in the lateral and longitudinal directions, thereby meeting the drilling and milling requirements at different positions.

[0029] The first moving mechanism 5 includes two opposing first slide rails 51 and a first lead screw module 52. The two first slide rails 51 are fixedly mounted on the upright 3. The first lead screw module 52 is equipped with a servo motor 53. Each of the first slide rails 51 is equipped with two first sliders. The first slide table 50 is fixedly mounted on the first sliders. The first lead screw module 52 is equipped with a first lead screw nut seat, which is fixedly connected to the bottom of the first slide table 50. The first slide table 50 is equipped with a saddle 500. The saddle 500 has an arc structure 501 at the connection with the first slide table 50. The arc structure 501 is used for shock absorption. The saddle 500 is equipped with a spindle box 502. The machining spindle 6 is mounted on the spindle box 502. The first moving mechanism 5 is used to control the machining spindle 60 to move up and down to perform drilling and milling operations on the workpiece.

[0030] The machining spindle 60 includes a spindle 60, a servo motor 61, and a geared motor 62. One end of the spindle 60 is provided with a linkage gear, and the geared motor 62 is provided with a gear. The gears mesh with each other. The drive end of the servo motor 61 and one end of the spindle 60 are also provided with a synchronous pulley. The two synchronous pulleys are meshed with a synchronous belt. The spindle 60 is provided with a clamp 12 for holding the tool. The machining spindle 60 is used to drive the tool to rotate and perform drilling and milling operations on the workpiece.

[0031] Both platform 90 and the first platform 101 are provided with installation ports, and each installation port is provided with a level 13. The level 13 facilitates intuitive observation of the correction status. The left and right bottom surfaces of platform 90 are provided with distance sensors 14. The distance sensors 14 are used to collect distance data between the left and right bottom surfaces of platform 90 and the plane of the third slide 80. The front and rear sides of the first platform 101 are provided with distance sensors 15. The distance sensors 15 are used to measure the distance data between the front and rear sides of the first platform 101 and the surface of platform 90. The side of the upright 3 is provided with a horizontal detection and processing controller. The horizontal detection and processing controller is electrically connected to the distance sensors 14 and 15. The base 2 is provided with a control box. The horizontal detection and processing controller is electrically connected to the control box. That is, the horizontal detection and processing controller collects data from the distance sensors 14 and 15, processes it, and then feeds the processed data back to the control box. The control box drives the tilt adjustment mechanism 9 and the flipping mechanism 10 to perform leveling, correction, and reset actions, thereby improving the efficiency of horizontal reset and adjustment.

[0032] Louvered covers are provided between the worktable 4 and the second slide 70, between the second slide 70 and the third slide 80, and between the first slide 50 and the upright 3. That is, plates are installed between the front and rear surfaces of the worktable 4, the left and right surfaces of the second slide 70, and the bottom surface of the first slide 50 and the upright 3. The louvered covers are fixed between the two mounting plates. Preferably, the louvered covers are foldable louvered covers. The louvered covers are used to provide protection, thereby ensuring that the first lead screw module 52, the second lead screw module 72, and the third lead screw module 82 are protected, reducing jamming caused by foreign objects, and extending the service life of the machining center 1.

[0033] This invention establishes a multi-axis conversion platform by setting a first movable mechanism to achieve the lifting and lowering of the machining spindle, and a second and third movable mechanisms to achieve the lateral and longitudinal movement of the workpiece. Combined with tilting, flipping, and rotating mechanisms, this forms a composite multi-axis conversion platform. This platform can drive the workpiece to move in the lateral, longitudinal, and vertical directions while simultaneously achieving multiple controllable degrees of freedom of motion, including tilting and swinging around a horizontal axis, flipping around another horizontal axis, and rotating around a vertical axis. This allows for the continuous machining of complex contours (such as curved deep grooves, polyhedra, and irregular curved surfaces) without disassembly of the clamped workpiece. Since the workpiece can be adjusted to any desired machining angle after a single clamping, the cumbersome steps of multiple stops, disassembly, reassembly, and fixture changes required by traditional methods due to angle changes are completely avoided. This not only significantly shortens auxiliary time and improves overall machining efficiency but also reduces the labor intensity and skill requirements for operators, making the machining of complex workpieces much more convenient.

[0034] By setting up a distance measuring sensor, a distance measuring sensor 1, and a horizontal detection and processing controller, the tilt adjustment data of the platform and the flip angle data of the first platform are monitored in real time. After processing the data, the controller can feed back to the main control system and drive the corresponding adjustment mechanism, such as a hydraulic cylinder or a servo motor, to automatically level or reset to a preset angle. This simplifies equipment preparation and reset operations, improves adjustment accuracy and speed, and enhances the intelligence level and stability of the equipment.

[0035] This invention is not limited to the above-described embodiments. Other machining centers with multi-axis conversion platforms obtained by using the same or similar structures, devices, processes or methods as the above-described embodiments of this invention are all within the protection scope of this invention.

Claims

1. A machining center with a multi-axis conversion platform, characterized by: The machining center includes a base, the base is provided with a vertical pole and a worktable, the vertical pole is located behind the worktable, the vertical pole is provided with a first moving mechanism that moves up and down, the first moving mechanism is provided with a first slide, and the first slide is provided with a machining spindle for clamping tools. The workbench is provided with a second moving mechanism arranged longitudinally, the second moving mechanism is provided with a second slide, the second slide is provided with a third moving mechanism arranged laterally, the third moving mechanism is provided with a third slide, the third slide is provided with a tilt adjustment mechanism, the tilt adjustment mechanism is provided with a platform, the platform is provided with a flipping mechanism, the flipping mechanism is provided with a rotating mechanism, and the rotating mechanism is provided with a clamp for fixing the workpiece.

2. The machining center with a multi-axis conversion platform according to claim 1, characterized in that: The third slide is provided with multiple mounting ports, and the tilt adjustment mechanism includes multiple hydraulic cylinders. Each hydraulic cylinder is provided with a lifting rod, and the top of each lifting rod is provided with a ball connecting part. The bottom of the platform is provided with multiple ball grooves, and the ball connecting parts are respectively arranged in the ball grooves to form a sliding connection. A pad is provided between the ball connecting part and the ball groove.

3. The machining center with a multi-axis conversion platform according to claim 2, characterized in that: The platform has two oppositely arranged mounting seats, each of which is equipped with a first bearing and a first rotating shaft. The flipping mechanism includes a first servo motor and a first platform. The first servo motor is fixedly mounted on one of the mounting seats, and the drive end of the first servo motor is fixedly connected to the first rotating shaft. The two ends of the first platform are provided with connecting blocks that are fixedly connected to the ends of the first rotating shaft. The rotating mechanism is disposed within the first platform.

4. The machining center with a multi-axis conversion platform according to claim 3, characterized in that: The rotating mechanism includes a rotating shaft and a second servo motor. The first platform has two mounting holes, one at the center and one at one end. The mounting hole at the center is equipped with a harmonic reducer. The rotating shaft is mounted on the harmonic reducer. The second servo motor is mounted in the other mounting hole. Both the harmonic reducer and the second servo motor are equipped with synchronous pulleys. A meshing synchronous belt is fitted between the synchronous pulleys. The top of the rotating shaft is equipped with a mounting base.

5. The machining center with a multi-axis conversion platform according to claim 4, characterized in that: The clamp is mounted on the mounting base, and a detachable connection structure is provided between the clamp and the mounting base. The detachable connection structure can be one of a screw locking structure or a snap-fit ​​connection mechanism, and the clamp is a multi-jaw clamp.

6. The machining center with a multi-axis conversion platform according to claim 5, characterized in that: The second moving mechanism includes two opposing second slide rails and a second lead screw module. The two second slide rails are fixedly mounted on the worktable. The second lead screw module is equipped with a servo motor. Each of the second slide rails is equipped with two second sliders. The second slide table is fixedly mounted on the second sliders. The second lead screw module is equipped with a second lead screw nut seat. The second lead screw nut seat is fixedly connected to the bottom of the second slide table. The third moving mechanism includes two opposing third slide rails and a third lead screw module. The two third slide rails are fixedly mounted on the second slide platform. The third lead screw module is equipped with a servo motor. Each third slide rail is equipped with two third sliders. The third slide platform is fixedly mounted on the third sliders. The third lead screw module is equipped with a third lead screw nut seat. The third lead screw nut seat is fixedly connected to the bottom of the third slide platform.

7. The machining center with a multi-axis conversion platform according to claim 6, characterized in that: The first moving mechanism includes two opposing first slide rails and a first lead screw module. The two first slide rails are fixedly mounted on the upright. The first lead screw module is equipped with a servo motor. Each first slide rail is equipped with two first sliders. The first slide table is fixedly mounted on the first sliders. The first lead screw module is equipped with a first lead screw nut seat. The first lead screw nut seat is fixedly connected to the bottom of the first slide table. The first slide table is equipped with a saddle. The saddle has an arc structure at the connection point with the first slide table. The saddle is equipped with a spindle box. The machining spindle is mounted on the spindle box.

8. The machining center with a multi-axis conversion platform according to claim 7, characterized in that: The machining spindle includes a spindle, a servo motor, and a geared motor. One end of the spindle is provided with a linkage gear, and the geared motor is provided with a gear. The gear and the gear are meshed together. The drive end of the servo motor and one end of the spindle are also provided with a synchronous pulley. The two synchronous pulleys are meshed together by a synchronous belt.

9. The machining center with a multi-axis conversion platform according to claim 8, characterized in that: Both the platform and the first platform are provided with an installation port, and a level is provided in each of the installation ports. Distance sensors are provided on the left and right bottom surfaces of the platform, and distance sensors are provided on the front and rear sides of the first platform. A horizontal detection and processing controller is provided on the side of the upright, and the horizontal detection and processing controller is electrically connected to the distance sensors and the first distance sensor.

10. The machining center with a multi-axis conversion platform according to claim 9, characterized in that: Louvered covers are provided between the workbench and the second slide, between the second slide and the third slide, and between the first slide and the upright.

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