Large multi-axis linkage horizontal machining center

Abstract

The invention relates to a large multi-axis linkage horizontal machining center, and relates to the technical field of numerical control machining equipment, the large multi-axis linkage horizontal machining center comprises a gantry center frame, an X-axis moving mechanism, a Y-axis moving mechanism, a Z-axis moving mechanism and a spindle head are arranged on the gantry center frame, the spindle head is arranged on the Z-axis moving mechanism, the Z-axis moving mechanism is arranged in a frame of the Y-axis moving mechanism, and the Y-axis moving mechanism is arranged in a frame of the Z-axis moving mechanism. The Y-axis moving mechanism is arranged in a frame of the X-axis moving mechanism, and the X-axis moving mechanism, the Y-axis moving mechanism and the Z-axis moving mechanism can drive the spindle head to move in the X axis, the Y axis and the Z axis respectively. A tool platform is arranged on the gantry center frame, the tool platform is connected with the gantry center frame through a W-axis moving mechanism, and the W-axis moving mechanism can drive the tool platform to move along a W axis. The spindle head has the advantages that the extending length of the spindle head is reduced, the vibration and flutter phenomena in the machining process are reduced, and therefore the surface roughness of a workpiece is reduced, and the machining quality of the spindle head is improved.

Description

Technical Field

[0001] The present application relates to the technical field of numerical control processing equipment, and in particular to a large multi-axis linkage horizontal processing center. Background Art

[0002] The multi-axis linkage horizontal machining center is a typical representative of high-end CNC machine tools. It integrates multi-axis collaborative control, high-precision machining and complex surface processing capabilities. It is widely used in precision parts processing in aerospace, automobile manufacturing, energy equipment and other fields.

[0003] The invention publication number CN118123524A discloses a frame-in-frame five-axis horizontal cradle machining center. The second frame in the X-axis drive mechanism in the machining center in the document is located in the first through hole of the base, and the Z-axis drive mechanism is arranged in the first through hole of the first frame and the second through hole of the second frame at the same time. The Z-axis drive mechanism is arranged in a frame-in-frame structure to form a frame-in-frame structure, which improves the overall rigidity of the machining center. In the prior art, when the workpiece has a large machining range along the Z axis, the spindle head needs to extend a large distance along the Z axis, resulting in reduced spindle head rigidity, increased vibration, and easy to cause chatter under the action of cutting force. The surface roughness (Ra value) of the workpiece increases significantly, especially during fine machining, chatter marks may be generated, resulting in reduced machining quality of the spindle head. Summary of the invention

[0004] In order to improve the problem that when the workpiece has a large processing range along the Z-axis, the spindle head needs to extend a large distance along the Z-axis, resulting in reduced processing quality of the spindle head, the present application provides a large multi-axis linkage horizontal machining center.

[0005] The large multi-axis linkage horizontal machining center provided in this application adopts the following technical solution: A large multi-axis linkage horizontal machining center, comprising a gantry center frame, on which an X-axis moving mechanism, a Y-axis moving mechanism, a Z-axis moving mechanism and a spindle head are arranged, the spindle head is arranged on the Z-axis moving mechanism, the Z-axis moving mechanism is arranged in a frame of the Y-axis moving mechanism, the Y-axis moving mechanism is arranged in a frame of the X-axis moving mechanism, and the X-axis moving mechanism, the Y-axis moving mechanism and the Z-axis moving mechanism can drive the spindle head to move in the X-axis, Y-axis and Z-axis respectively; A tooling platform is provided on the gantry center frame, and the tooling platform is connected to the gantry center frame via a W-axis moving mechanism, and the W-axis moving mechanism can drive the tooling platform to move along the W-axis.

[0006] By adopting the above technical solution, the tooling platform and the gantry center frame are connected by the W-axis moving mechanism, so that the workpiece can move along the W-axis direction during the processing, further expanding the processing freedom and meeting the processing requirements of complex curved surfaces and large workpieces. By moving the workpiece along the W-axis direction, the protruding length of the spindle head is reduced, and the vibration and chatter phenomenon in the processing process is reduced, thereby reducing the surface roughness of the workpiece and improving the processing quality of the spindle head.

[0007] Preferably, a balancing cylinder is provided on the Y-axis moving mechanism, a cylinder body of the balancing cylinder is connected to the frame of the X-axis moving mechanism, and a piston rod of the balancing cylinder is connected to the frame of the Y-axis moving mechanism.

[0008] By adopting the above technical solution, the setting of the balancing cylinder can effectively offset the unbalanced force generated by the Y-axis moving mechanism during the movement, improve the running smoothness of the Y-axis moving mechanism, and enable the balancing cylinder to provide stable supporting force when the Y-axis moving mechanism moves, reduce the vibration caused by gravity or inertia, thereby improving the positioning accuracy and processing stability of the spindle head in the Y-axis direction.

[0009] Preferably, there are two groups of balancing cylinders, and the two groups of balancing cylinders are respectively arranged on both sides of the spindle head.

[0010] By adopting the above technical solution and using two sets of balancing cylinders, the load on both sides of the spindle is balanced, the movement reliability of the spindle is improved, and the processing accuracy of the spindle is guaranteed.

[0011] Preferably, the driving module of the Y-axis moving mechanism includes two groups of screw rods and a servo motor, the two groups of screw rods are arranged on both sides of the spindle head, the screw rods are threadedly connected to the frame in the Y-axis moving mechanism, and the servo motor is connected to the screw rod so as to drive the screw rod to rotate.

[0012] By adopting the above technical solution, dual servo motors are used to synchronously drive the screw to rotate, drive the spindle head, and accurately control the moving position of the spindle head to ensure the accuracy of processing.

[0013] Preferably, the driving module of the X-axis moving mechanism includes two groups of linear motors, and the output shafts of the two groups of linear motors are connected to the frame of the X-axis moving mechanism to drive the spindle head to move along the X-axis.

[0014] By adopting the above technical solution, two sets of linear motors are used as the driving modules of the X-axis moving mechanism, which can realize the movement of the spindle head in the X-axis direction, and can achieve smooth movement and ensure rapid movement without large loads.

[0015] Preferably, a fixing component is provided on the tooling platform, and the fixing component can fix the workpiece on the tooling platform.

[0016] By adopting the above technical solution, the fixing components on the tooling platform can achieve stable fixation of the workpiece, effectively preventing the displacement or vibration of the workpiece caused by cutting force during the machining process, thereby improving the machining accuracy and the surface quality of the workpiece.

[0017] Preferably, the fixing assembly comprises two groups of rotating supports and rotating mounting plates, the two groups of rotating supports are fixedly arranged on the tooling platform at intervals, the rotating mounting plates are arranged opposite to each other and are coaxially rotatably arranged on the rotating supports, and the workpiece can be mounted on the two groups of rotating mounting plates.

[0018] By adopting the above technical solution, the fixing components on the tooling platform can achieve stable fixation and flexible adjustment of the workpiece. Specifically, the setting of the two sets of rotating supports provides a stable support structure for the rotating mounting plate, while allowing the rotating mounting plate to rotate around its axis to meet the needs of different processing angles.

[0019] Preferably, a rotating sleeve is fixedly provided on the rotating mounting plate, and the rotating sleeve is inserted into the rotating support and rotatably connected. A supporting cylinder coaxially arranged with the rotating sleeve is fixedly provided on the rotating support, an intermediate shaft is inserted in the supporting cylinder, and the intermediate shaft is inserted in the rotating sleeve. A guide hole arranged along its own axial direction is opened on the supporting cylinder, and a guide block slidably inserted in the guide hole is provided on the intermediate shaft. The intermediate shaft and the rotating sleeve are connected by a threaded structure so that the rotating sleeve can drive the axial sliding of the intermediate shaft, and a fixing part for limiting the sliding of the guide block is provided on the rotating support.

[0020] By adopting the above technical solution, when adjusting the processing angle of the workpiece, the workpiece mounted on the rotating mounting plate is rotated, and the rotating mounting plate drives the rotating sleeve to rotate when rotating. The rotating sleeve drives the intermediate shaft to slide in the supporting tube through the threaded structure. When the workpiece is rotated to a specified angle, the intermediate shaft also slides to a corresponding position, and then the guide block is fixed by a fixing part, thereby fixing the intermediate shaft. At this time, the workpiece is fixed at a specified inclination angle, thereby improving the stability of the workpiece inclination fixation and the flexibility of the inclination angle adjustment.

[0021] Preferably, the spiral structure includes a spiral groove and a ball, the spiral groove is arranged on the intermediate shaft, the ball is embedded on the inner wall of the rotating sleeve and can be inserted into the spiral groove, and the ball is in contact with the opposite side wall of the spiral groove.

[0022] By adopting the above technical solution, the matching structure of the ball and the spiral groove can realize efficient transmission between the intermediate shaft and the rotating sleeve, while reducing the friction resistance between the two, and improving the stability of the transmission between the rotation of the rotating sleeve and the sliding of the intermediate shaft. The spiral groove wall restricts the sliding of the ball, thereby improving the stability of the tilt fixation of the workpiece.

[0023] Preferably, the fixing part includes a fixing screw and a fixing nut, the fixing screw is passed through the guide blocks on the two rotating supports, the fixing nuts are respectively on both sides of each guide block and are threadedly sleeved on the fixing screw, and the fixing nuts on both sides of the guide block can squeeze and fix the guide block.

[0024] By adopting the above technical solution, the fixing screw is passed through the guide block, and the fixing nuts are located on both sides of the guide block and are squeezed and fixed to the guide block through threaded connection. By rotating the fixing nuts, the two rotating mounting plates can be fixed at the same time, ensuring that the forces at both ends of the workpiece are balanced during processing, thereby improving the processing quality.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The tooling platform and the gantry center frame are connected by a W-axis moving mechanism, so that the workpiece can move along the W-axis direction during the processing, further expanding the degree of freedom of processing and meeting the processing requirements of complex curved surfaces and large workpieces. By moving the workpiece along the W-axis direction, the length of the spindle head extension is reduced, and the vibration and chatter phenomenon during the processing is reduced, thereby reducing the surface roughness of the workpiece and improving the processing quality of the spindle head; 2. The setting of the balance cylinder can effectively offset the unbalanced force generated by the Y-axis moving mechanism during movement, improve the running stability of the Y-axis moving mechanism, enable the balance cylinder to provide stable support force when the Y-axis moving mechanism moves, reduce the vibration caused by gravity or inertia, and thus improve the positioning accuracy and processing stability of the spindle head in the Y-axis direction; 3. When adjusting the processing angle of the workpiece, the workpiece mounted on the rotating mounting plate is rotated. The rotating mounting plate drives the rotating sleeve to rotate. The rotating sleeve drives the intermediate shaft to slide in the supporting tube through the threaded structure. When the workpiece is rotated to the specified angle, the intermediate shaft also slides to the corresponding position, and then the guide block is fixed by the fixing part to fix the intermediate shaft. At this time, the workpiece is fixed at the specified inclination angle, thereby improving the stability of the workpiece inclination fixation and the flexibility of the inclination angle adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a large multi-axis linkage horizontal machining center of Example 1 of the present application.

[0027] Figure 2 It is a structural diagram used to show the gantry frame structure.

[0028] Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0029] Figure 4 yes Figure 2 Enlarged view of part B in the middle.

[0030] Figure 5 It is a schematic diagram of the structure of the tooling platform of Example 2 of the present application.

[0031] Figure 6 It is a top view of the tooling platform of Example 2 of the present application.

[0032] Figure 7 is along Figure 6 Sectional view along the CC line.

[0033] Figure 8 yes Figure 7 Enlarged view of part D in the middle.

[0034] Explanation of the reference numerals in the accompanying drawings: 1. Gantry center frame; 11. Base; 12. Column; 13. Crossbeam; 14. Gantry frame structure; 2. X-axis moving mechanism; 21. Linear motor; 3. Y-axis moving mechanism; 31. Screw; 32. Servo motor; 33. Balance cylinder; 4. Z-axis moving mechanism; 5. Spindle head; 61. Work platform; 62. W-axis moving mechanism; 7. Support frame; 71. X-axis folding plate; 72. Y-axis folding plate; 73. X-axis slide rail; 74. Y-axis slide rail; 75. Mounting plate; 8. Fixed assembly; 81. Rotating support; 82. Rotating mounting plate; 83. Rotating sleeve; 84. Support cylinder; 85. Intermediate shaft; 861. Guide hole; 862. Guide block; 87. Threaded structure; 871. Spiral groove; 872. Ball; 88. Fixing piece; 881. Fixing screw; 882. Fixing nut. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-8 This application is described in further detail.

[0036] The embodiment of the present application discloses a large-scale multi-axis linkage horizontal machining center.

[0037] The inventors of the present application discovered that when the processing range of the workpiece along the Z-axis is large, the spindle head 5 needs to extend a larger distance along the Z-axis, which leads to reduced rigidity of the spindle head 5, aggravated vibration, and easy to induce chatter under the action of cutting force. The surface roughness (Ra value) of the workpiece increases significantly, and vibration marks may be produced during fine processing. For this reason, the present application mainly adopts a structural design of a large-scale multi-axis linkage horizontal machining center. By designing the tooling platform 61 to move along the W-axis, the distance that the spindle head 5 extends along the Z-axis is reduced, thereby achieving the effect of improving the rigidity and stability of the spindle head 5 under large-range Z-axis processing conditions. The present application is further described in detail below.

[0038] Example 1 Reference Figure 1 , Figure 2 The large multi-axis linkage horizontal machining center includes a gantry center frame 1, which includes a base 11, two columns 12 and a crossbeam 13. The two columns 12 are fixedly arranged on the base 11, and the crossbeam 13 is fixedly arranged on the top of the two columns 12, so that the gantry center frame 1 presents a gantry frame structure 14, and the gantry frame structure 14 has a width of 5600mm and a height of 4800mm. The gantry center frame 1 is provided with an X-axis moving mechanism 2, a Y-axis moving mechanism 3, a Z-axis moving mechanism 4 and a spindle head 5.

[0039] Reference Figure 1 , Figure 2 Linear rails are provided on the crossbeam 13 and the base 11. The linear rails cooperate with the sliders on the frame of the X-axis moving mechanism 2, so that the frame on the X-axis moving mechanism 2 moves along the X-axis. The spindle head 5 is arranged on the Z-axis moving mechanism 4, the Z-axis moving mechanism 4 is arranged in the frame of the Y-axis moving mechanism 3, and the Y-axis moving mechanism 3 is arranged in the frame of the X-axis moving mechanism 2. The X-axis moving mechanism 2, the Y-axis moving mechanism 3, and the Z-axis moving mechanism 4 can drive the spindle head 5 to move in the X-axis, Y-axis, and Z-axis respectively. The gantry frame structure 14 and the frame on the X-axis moving mechanism 2 form a "frame-in-frame" structure, which makes the machine tool have good rigidity, shock resistance, and precision retention, and is suitable for processing medium and large precision parts.

[0040] Reference Figure 2 A tooling platform 61 is provided on the base 11, and the tooling platform 61 is connected to the gantry center frame 1 through a W-axis moving mechanism 62, and the W-axis moving mechanism 62 can drive the tooling platform 61 to move along the W-axis.

[0041] When the spindle head 5 processes the workpiece, the tooling platform 61 is connected to the gantry center frame 1 via the W-axis moving mechanism 62, so that the workpiece can move along the W-axis direction during the processing, further expanding the processing freedom and meeting the processing requirements of complex curved surfaces and large workpieces. By moving the workpiece along the W-axis direction, the protruding length of the spindle head 5 is reduced, and the vibration and chatter phenomena in the processing process are reduced, thereby reducing the surface roughness of the workpiece and improving the processing quality of the spindle head 5.

[0042] Reference Figure 2 , the crossbeam 13 and the base 11 are both provided with linear rails, and the slider on the frame of the X-axis moving mechanism 2 cooperates with the linear rails, so that the frame of the X-axis moving mechanism 2 slides along the X-axis. The driving module of the X-axis moving mechanism 2 in this embodiment includes two groups of linear motors 21, and the number of each group of linear motors 21 is one. The two linear motors 21 are fixedly mounted on the base 11, and the output shafts of the two linear motors 21 are connected to the frame of the X-axis moving mechanism 2, driving the frame of the X-axis moving mechanism 2 to slide along the X-axis direction. As the driving module of the X-axis moving mechanism 2, the two groups of linear motors 21 can realize the movement of the spindle head 5 in the X-axis direction, which can not only realize smooth movement, but also ensure rapid movement without large loads.

[0043] Reference Figure 2 , Figure 3 The driving module of the Y-axis moving mechanism 3 in this embodiment includes two groups of screw rods 31 and servo motors 32. The number of each group of screw rods 31 is one. The two screw rods 31 are arranged on both sides of the spindle head 5. Each screw rod 31 is arranged along the Y-axis direction and is rotatably connected to the frame on the X-axis moving mechanism 2. The two screw rods 31 are respectively arranged on both sides of the frame of the Y-axis moving mechanism 3. Each screw rod 31 is threadedly connected to the screw nut on the frame in the Y-axis moving mechanism 3. The screw rod 31 drives the Y-axis moving mechanism 3 to slide along the Y-axis direction by rotating itself. The servo motor 32 corresponds to the screw rod 31 one by one. The output shaft of the servo motor 32 is fixedly connected to the screw rod 31 through a coupling, which is used to drive the screw rod 31 to rotate forward and reverse. The double servo motors 32 are used to synchronously drive the screw rod 31 to rotate, drive the spindle head 5, accurately control the moving position of the spindle head 5, and ensure the accuracy of processing.

[0044] Reference Figure 2 The Y-axis moving mechanism 3 is provided with a balancing cylinder 33, and there are two groups of balancing cylinders 33. The two groups of balancing cylinders 33 are located on both sides of the frame on the Y-axis moving mechanism 3. The cylinder body of each group of balancing cylinders 33 is fixedly connected to the frame of the X-axis moving mechanism 2, and the piston rod of the balancing cylinder 33 is fixedly connected to the frame of the Y-axis moving mechanism 3. The balancing cylinder 33 adopts a support-mounted gas-liquid composite integrated power balancing cylinder 33, the piston rod is self-centering, and the maximum stroke is 2000mm.

[0045] The arrangement of the balancing cylinder 33 can effectively offset the unbalanced force generated by the Y-axis moving mechanism 3 during movement, improve the running stability of the Y-axis moving mechanism 3, and enable the balancing cylinder 33 to provide a stable supporting force when the Y-axis moving mechanism 3 moves, reduce the vibration caused by gravity or inertia, and thus improve the positioning accuracy and processing stability of the spindle head 5 in the Y-axis direction. The two sets of balancing cylinders 33 are used to ensure load balance on both sides of the spindle, improve the movement reliability of the spindle, and ensure the processing accuracy of the spindle.

[0046] Reference Figure 2 The Z-axis moving mechanism 4 is driven by a linear motor, and the slider on the frame of the Z-axis moving mechanism 4 cooperates with the linear rail on the frame of the Y-axis moving mechanism 3 to enable the frame of the Z-axis moving mechanism 4 to slide along the Z-axis. The spindle head 5 is arranged on the frame of the Z-axis moving mechanism 4 to drive the machining tool to machine the workpiece.

[0047] Reference Figure 1 A support frame 7 is fixedly provided on the gantry frame structure 14. The support frame 7 and the gantry frame structure 14 leave space for the movement of the X-axis moving mechanism 2, the Y-axis moving mechanism 3, and the Z-axis moving mechanism 4. The support frame 7 is provided with an X-axis folding plate 71 and a Y-axis folding plate 72. The X-axis folding plate 71 is divided into two groups, which are respectively arranged on both sides of the Y-axis folding plate 72. The ends of the two groups of X-axis folding plates 71 that are far away from each other are fixedly connected to the support frame 7. The ends that are close to each other are fixedly provided with a Y-axis slide rail 74 that is arranged along the Y direction. The support frame 7 is provided with an X-axis slide rail 73. The two sides of the X-axis folding plate 71 are respectively slidably inserted in the corresponding X-axis slide rail 73. The Y-axis folding plate 72 is divided into two groups. The two ends of the two groups of Y-axis folding plates that are far away from each other are fixedly connected to the Y-axis slide rail 74. The ends that are close to each other are fixedly connected through a mounting plate 75. The two sides of the Y-axis folding plate 72 are respectively slidably inserted in the corresponding Y-axis slide rail 74. The mounting plate 75 is fixedly provided on the frame of the Y-axis moving mechanism 3.

[0048] When the spindle head 5 moves along the X-axis, one group of X-axis folding plates 71 shrinks and folds, and another group of X-axis folding plates 71 unfolds; when the spindle head 5 moves along the Y-axis, one group of Y-axis folding plates 72 shrinks and folds, and another group of Y-axis folding plates 72 unfolds, so that when the spindle head 5 moves, the X-axis folding plates 71 and the Y-axis folding plates 72 can adapt to the movement of the spindle head 5, block dust generated by processed parts, and block debris from entering precision components such as machine tool guides and bearings, avoid wear or jamming, and extend the life of the equipment.

[0049] Reference Figure 2 , Figure 4The W-axis moving mechanism 62 uses a servo motor-screw drive mechanism to drive the tooling platform 61 to slide back and forth along the W-axis. The W-axis is arranged in parallel with the Z-axis. The base 11 is provided with linear rails on both sides of the servo motor-screw drive mechanism. The slider on the tooling platform 61 cooperates with the linear rail on the base 11, so that the tooling platform 61 slides along the W-axis. The tooling platform 61 is provided with a fixing component 8, which can fix the workpiece on the tooling platform 61.

[0050] Reference Figure 2 , Figure 4 The fixing assembly 8 in this embodiment includes two groups of rotating supports 81 and rotating mounting plates 82. The two groups of rotating supports 81 are fixedly arranged on the tooling platform 61 at intervals. The two rotating mounting plates 82 are arranged opposite to each other, and each rotating mounting plate 82 is coaxially fixed with a rotating shaft, which is inserted into the rotating support 81 and is rotatably connected to the rotating support 81 to realize the rotational connection between the rotating mounting plate 82 and the rotating support 81. The two rotating mounting plates 82 can be provided with a clamping claw chuck to clamp and fix the workpiece, so as to realize the installation and fixation of the workpiece on the tooling platform 61. Each rotating shaft is externally connected to a torque motor, and the two torque motors synchronously drive the rotating mounting plate 82 to rotate, thereby completing the circumferential drive of the workpiece. The two rotating mounting plates 82 can realize the processing of large blades with a maximum size of 2500mm.

[0051] When fixing the workpiece, the workpiece is mounted on the two rotating mounting plates 82, and then the workpiece is rotated to adjust the inclination angle of the workpiece, allowing the rotating mounting plates 82 to rotate around their axes, thereby adapting to the needs of different processing angles and achieving stable fixation and flexible adjustment of the workpiece. When the inclination adjustment of the workpiece is completed, the fixing bolts are screwed to fix the rotating shaft, and the installation and fixation of the workpiece on the tooling platform 61 is completed.

[0052] The implementation principle of Example 1 is as follows: when the spindle head 5 processes the workpiece, the tooling platform 61 is connected to the gantry center frame 1 through the W-axis moving mechanism 62, and the workpiece on the tooling platform 61 is driven to move along the W-axis through the W-axis moving mechanism 62, so that the workpiece can move along the W-axis direction during the processing, further expanding the processing freedom and meeting the processing requirements of complex curved surfaces and large workpieces. By moving the workpiece along the W-axis direction, the protruding length of the spindle head 5 is reduced, and the vibration and chatter phenomenon in the processing process is reduced, thereby reducing the surface roughness of the workpiece and improving the processing quality of the spindle head 5.

[0053] Example 2 Reference Figure 5 , Figure 6 and Figure 7The difference between this embodiment and the first embodiment is that a rotating sleeve 83 is fixedly provided on each rotating mounting plate 82, and the rotating sleeve 83 is arranged on the opposite side of the two rotating mounting plates 82, and the rotating sleeve 83 is plugged into the rotating support 81 and is rotatably connected. A supporting cylinder 84 coaxially arranged with the rotating sleeve 83 is fixedly provided on each rotating support 81, and the inner diameter of the supporting cylinder 84 is larger than the outer diameter of the rotating sleeve 83. An intermediate shaft 85 is plugged into each supporting cylinder 84, and one end of the intermediate shaft 85 is plugged into the rotating sleeve 83. A guide hole 861 arranged along the axial direction of the supporting cylinder 84 is provided, and a guide block 862 slidably plugged into the guide hole 861 is fixedly provided on the intermediate shaft 85, and the intermediate shaft 85 moves along the axial direction of the supporting cylinder 84 under the cooperation of the guide block 862 and the guide hole 861.

[0054] Reference Figure 7 , Figure 8 The intermediate shaft 85 and the rotating sleeve 83 are connected by a threaded structure 87, so that the rotating sleeve 83 can drive the intermediate shaft 85 to slide axially. The threaded structure 87 in this embodiment includes a spiral groove 871 and a ball 872. The spiral groove 871 is arranged on the peripheral side wall of the intermediate shaft 85 and is spirally arranged along the axial direction of the intermediate shaft 85, extending to the end of the intermediate shaft 85, so as to facilitate the cooperation between the ball 872 and the spiral groove 871. The ball 872 is embedded on the inner side wall of the rotating sleeve 83 and inserted in the spiral groove 871. When the ball 872 is inserted in the spiral groove 871, the ball 872 fits the opposite side wall of the spiral groove 871.

[0055] The matching structure of the ball 872 and the spiral groove 871 can realize efficient transmission between the intermediate shaft 85 and the rotating sleeve 83, while reducing the friction resistance between the two, and improving the stability of the transmission between the rotation of the rotating sleeve 83 and the sliding of the intermediate shaft 85. The groove wall of the spiral groove 871 restricts the sliding of the ball 872, thereby improving the stability of the tilting fixation of the workpiece.

[0056] Reference Figure 7 , Figure 8 , a fixing member 88 for limiting the sliding of the guide block 862 is provided on the rotating support 81. The fixing member 88 in this embodiment includes a fixing screw 881 and a fixing nut 882. The fixing screw 881 passes through the guide blocks 862 on the two rotating supports 81, and the fixing nuts 882 are respectively on both sides of each guide block 862 and are threadedly sleeved on the fixing screw 881. The fixing nuts 882 on both sides of the guide block 862 can squeeze and fix the guide block 862. By rotating the fixing nuts 882, the two rotating mounting plates 82 can be fixed at the same time, ensuring that the forces on both ends of the workpiece are balanced during processing, thereby improving the processing quality.

[0057] The implementation principle of Example 2 is as follows: when adjusting the processing angle of the workpiece, the workpiece installed on the rotating mounting plate 82 is rotated, and the rotating mounting plate 82 drives the rotating sleeve 83 to rotate when rotating. The rotating sleeve 83 drives the intermediate shaft 85 to slide in the support tube 84 through the threaded structure 87. When the workpiece is rotated to a specified angle, the intermediate shaft 85 also slides to a corresponding position, and then the two rotating mounting plates 82 are fixed at the same time by rotating the fixing nut 882, thereby fixing the intermediate shaft 85. At this time, the workpiece is fixed at a specified inclination angle, thereby improving the stability of the workpiece inclination fixation and the flexibility of adjusting the inclination angle.

[0058] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A large multi-axis linkage horizontal machining center, characterized by: The invention comprises a gantry center frame (1), wherein the gantry center frame (1) is provided with an X-axis moving mechanism (2), a Y-axis moving mechanism (3), a Z-axis moving mechanism (4) and a spindle head (5), wherein the spindle head (5) is arranged on the Z-axis moving mechanism (4), the Z-axis moving mechanism (4) is arranged in the frame of the Y-axis moving mechanism (3), and the Y-axis moving mechanism (3) is arranged in the frame of the X-axis moving mechanism (2), and the X-axis moving mechanism (2), the Y-axis moving mechanism (3) and the Z-axis moving mechanism (4) can respectively drive the spindle head (5) to move on the X-axis, the Y-axis and the Z-axis; A tooling platform (61) is provided on the gantry center frame (1); the tooling platform (61) is connected to the gantry center frame (1) via a W-axis moving mechanism (62); and the W-axis moving mechanism (62) can drive the tooling platform (61) to move along the W-axis.

2. The large multi-axis linkage horizontal machining center according to claim 1 is characterized in that: The Y-axis moving mechanism (3) is provided with a balancing cylinder (33), the cylinder body of the balancing cylinder (33) is connected to the frame of the X-axis moving mechanism (2), and the piston rod of the balancing cylinder (33) is connected to the frame of the Y-axis moving mechanism (3).

3. The large multi-axis linkage horizontal machining center according to claim 2 is characterized in that: The number of the balancing cylinders (33) is two groups, and the two groups of balancing cylinders (33) are respectively arranged on both sides of the spindle head (5).

4. The large multi-axis linkage horizontal machining center according to claim 1 is characterized in that: The driving module of the Y-axis moving mechanism (3) comprises two groups of screw rods (31) and a servo motor (32). The two groups of screw rods (31) are arranged on both sides of the spindle head (5). The screw rods (31) are threadedly connected to the frame in the Y-axis moving mechanism (3). The servo motor (32) is connected to the screw rod (31) so as to drive the screw rod (31) to rotate.

5. The large multi-axis linkage horizontal machining center according to claim 1 is characterized in that: The driving module of the X-axis moving mechanism (2) comprises two groups of linear motors (21), and the output shafts of the two groups of linear motors (21) are connected to the frame of the X-axis moving mechanism (2) so as to be able to drive the spindle head (5) to move along the X-axis.

6. The large multi-axis linkage horizontal machining center according to claim 1 is characterized in that: The tooling platform (61) is provided with a fixing component (8), and the fixing component (8) is capable of fixing a workpiece on the tooling platform (61).

7. The large multi-axis linkage horizontal machining center according to claim 6 is characterized in that: The fixing assembly (8) comprises two groups of rotating supports (81) and rotating mounting plates (82); the two groups of rotating supports (81) are fixedly arranged on the tooling platform (61) at intervals; the rotating mounting plates (82) are arranged opposite to each other and are coaxially rotatably arranged on the rotating supports (81); and the workpiece can be mounted on the two groups of rotating mounting plates (82).

8. The large multi-axis linkage horizontal machining center according to claim 7 is characterized in that: A rotating sleeve (83) is fixedly provided on the rotating mounting plate (82), and the rotating sleeve (83) is plugged into the rotating support (81) and is rotatably connected. A supporting cylinder (84) coaxially arranged with the rotating sleeve (83) is fixedly provided on the rotating support (81), and an intermediate shaft (85) is inserted into the supporting cylinder (84), and the intermediate shaft (85) is plugged into the rotating sleeve (83). A guide hole (861) arranged along the axial direction of the supporting cylinder (84) is opened, and a guide block (862) slidably plugged into the guide hole (861) is provided on the intermediate shaft (85). The intermediate shaft (85) is connected to the rotating sleeve (83) through a threaded structure (87), so that the rotating sleeve (83) can drive the intermediate shaft (85) to slide axially. A fixing member (88) for limiting the sliding of the guide block (862) is provided on the rotating support (81).

9. The large multi-axis linkage horizontal machining center according to claim 8, characterized in that: The spiral structure comprises a spiral groove (871) and a ball (872), wherein the spiral groove (871) is arranged on the intermediate shaft (85), and the ball (872) is embedded on the inner wall of the rotating sleeve (83) and can be inserted into the spiral groove (871), and the ball (872) is in contact with the opposite side wall of the spiral groove (871).

10. The large multi-axis linkage horizontal machining center according to claim 8, characterized in that: The fixing member (88) comprises a fixing screw (881) and a fixing nut (882); the fixing screw (881) is passed through the guide blocks (862) on the two rotating supports (81); the fixing nuts (882) are respectively located on both sides of each guide block (862) and are threadedly sleeved on the fixing screw (881); the fixing nuts (882) on both sides of the guide block (862) can squeeze and fix the guide block (862).

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