A machining center

Abstract

The present invention relates to the technical field of CNC machining centers, and specifically to a machining center, comprising a T-shaped support base, a stand, a base, a stand driving screw, and a base driving screw. A spindle box and a spindle box driving screw are arranged on the stand, and a rotatable exchange seat and an exchange seat driver for driving the exchange seat to rotate are arranged on the base. Two coaxial transmission shaft groups and a rotation driving mechanism for driving the two transmission shaft groups to rotate are arranged in the exchange seat. The opposite ends of the two transmission shaft groups extend into the exchange seat and are connected to the rotation driving mechanism in a manner capable of interrupting transmission. The back ends of the two transmission shaft groups both extend to the outside of the exchange seat and are provided with a turntable extending in a vertical direction. The present application connects the rotation driving mechanism with the turntable through a group of transmission shafts capable of interrupting transmission, thereby realizing the free rotation of the turntable relative to the exchange seat, so that the posture of the workpiece to be processed can be flexibly adjusted as needed, thereby greatly improving the machining efficiency and accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of numerical control machining centers, in particular to a machining center. Background Art

[0002] The horizontal exchange turntable plays an important role in the horizontal machining center. It increases the processing dimension of the parts by adding a rotating A-axis on the basis of the X / Y / Z three-axis motion. At the same time, the exchange turntable has an interchangeable table design, so that the turntable in the processing area is located inside the horizontal machining center machine tool, connected to the turntable rotating body installed on the bed through a positioning cone, and controlled by the machine tool CNC system to participate in four-axis linkage processing. There is another table in the preparation station area for material preparation. When the workpiece in the processing area is processed, the turntable of the preparation station and the turntable of the working area are exchanged using the turntable exchange device, which effectively saves material preparation time and further improves work efficiency.

[0003] In order to improve processing efficiency and accuracy, most machine tools clamp the workpiece vertically on the processing station and install the milling cutter horizontally on the spindle of the machine tool.

[0004] In addition, a Chinese invention patent (publication number CN106670830A) discloses a horizontal workbench exchange rack, which includes a support frame, a rotary lifter, a support hook slot block, a workbench, an exchange table and a machining center. When not in use, the support frame is placed horizontally between two workbenches to be exchanged and is outside the moving range of the workbench, so it will not interfere with the two axial movements of the workbench. However, this horizontally configured milling cutter processing method causes the side of the workpiece to be processed to always face the milling cutter, and the workpiece to be processed cannot rotate relative to the milling cutter during the processing, thereby limiting its effective cooperation with the milling cutter, and further affecting the processing efficiency and accuracy. Summary of the invention

[0005] In view of the problems of the prior art, a machining center is provided, in which two turntables extending in the longitudinal direction are arranged on both sides of the exchange seat, and a rotary drive mechanism is installed inside the exchange seat. The rotary drive mechanism is connected to the turntable through a transmission shaft group capable of interrupting transmission, so that the turntable can rotate at any angle relative to the exchange seat. The problems of the difficulty in rotating the workpiece to be processed and the slow processing speed in cooperation with the milling cutter in the existing device during the processing are effectively solved.

[0006] To solve the problems of the prior art, the present invention provides a machining center, comprising a T-shaped supporting base, wherein a stand and a base capable of sliding in a horizontal direction are arranged at the top of the T-shaped supporting base, a stand driving screw for driving the stand to move and a base driving screw for driving the base to move are also arranged on the T-shaped supporting base, the sliding directions of the stand and the base are perpendicular, a spindle box capable of sliding in a vertical direction and a spindle box driving screw for driving the spindle box to move in a vertical direction are arranged on the stand, a rotatable exchange seat and an exchange seat driver for driving the exchange seat to rotate are arranged on the base, two coaxial transmission shaft groups and a rotating drive mechanism for driving the two transmission shaft groups to rotate are arranged in the exchange seat, the opposite ends of the two transmission shaft groups extend into the exchange seat and are connected to the rotating drive mechanism in a manner capable of interrupting transmission, and the back ends of the two transmission shaft groups both extend to the outside of the exchange seat and are provided with a turntable extending in the vertical direction.

[0007] Preferably, a universal coupling is provided between the turntable and the transmission shaft assembly, and an angle adjustment mechanism is also provided in the exchange seat. The angle adjustment mechanism has an adjustment portion extending to the outside of the exchange seat, the adjustment portion is connected to the turntable, and the adjustment portion can adjust the angle of the turntable relative to the vertical plane along the longitudinal direction.

[0008] Preferably, the universal coupling includes a fixed section connected to the transmission shaft group, a deflection section connected to the turntable, and a cross shaft connecting the fixed section and the deflection section. A connecting disk is provided on the side of the turntable opposite to the exchange seat, and a connecting head coaxial with the connecting disk is provided on the end of the connecting disk facing the exchange seat. The deflection section is coaxially fixedly connected to the connecting head. The angle adjustment mechanism also includes a fixed frame, a deflection adjustment frame and a linear drive. The fixed frame is provided on the side of the exchange seat facing the turntable, the deflection adjustment frame extends longitudinally, the top end of the deflection adjustment frame is rotatably provided in the fixed frame, the rotation axis of the deflection adjustment frame relative to the fixed frame is in a coaxial state with the horizontal axis of the cross shaft, the deflection adjustment frame has an inner cavity coaxially rotatably connected to the connecting disk, the universal coupling is located in the inner cavity of the deflection adjustment frame, one end of the linear drive is rotatably provided in the exchange seat, and the other end of the linear drive extends to the outside of the exchange seat and is rotatably connected to the bottom end of the deflection adjustment frame.

[0009] Preferably, the fixed frame includes two fixed plates fixedly connected to the exchange seat, a deflection bin for deflecting the deflection section of the universal coupling relative to the fixed section of the universal coupling is formed between the two fixed plates, the deflection adjustment frame includes an adjusting ring, an adjusting side plate and a guide shaft, the inner circumferential wall of the adjusting ring is coaxially rotatably connected to the outer circumferential wall of the connecting plate, a connecting tube is provided at one end of the adjusting ring facing the exchange seat, the interior of the connecting tube and the adjusting ring forms an inner cavity for accommodating the universal coupling, there are two adjusting side plates, the two adjusting side plates are extended in the vertical direction and are arranged on both sides of the connecting tube, a pivot is provided on the outer side of the adjusting side plate, the axis of the pivot is coaxial with the horizontal axis of the cross shaft, the pivot passes through the fixed plate and is rotatably connected thereto, the guide shaft is transversely arranged between the two adjusting side plates and is located at the lower half of the adjusting side plates, and the output rod of the linear drive is rotatably connected to the guide shaft.

[0010] Preferably, an escape opening is provided on the exchange seat for the linear drive to pass through.

[0011] Preferably, the diameter of the avoidance opening is larger than the width of the linear drive, a tower-shaped corrugated cover is arranged outside the avoidance opening, and the end of the tower-shaped corrugated cover deviating from the avoidance opening is connected to the output rod of the linear drive.

[0012] Preferably, the rotary drive mechanism includes a servo motor arranged in the exchange seat, the transmission shaft group includes a mounting frame, a driven shaft, a driving shaft, a driven disk, and an electromagnetic ring arranged in the exchange seat, the mounting frame and the inner wall of the exchange seat form a mounting cavity, the driven shaft passes through the side wall of the exchange seat and is rotatably connected thereto, one end of the driven shaft extending to the outside of the exchange seat is coaxially connected to the fixed end of the universal coupling, and the other end of the driven shaft extends into the mounting cavity; the driving shaft and the driven shaft coaxially pass through the mounting frame and are rotatably connected to the mounting frame, and a driving disk is provided at one end of the driving shaft facing the driven shaft; the driven disk is coaxially fitted and slidably arranged on the driven shaft, when the driven disk abuts against the driving disk, the driving disk drives the driven disk to rotate, and an elastic element for guiding the driven disk away from the driving disk is also provided in the mounting frame; the electromagnetic ring is arranged in the mounting frame and faces the driven disk, and the electromagnetic ring is used to attract the driven disk to abut against the driving disk; the output shaft of the servo motor faces upward and is transmission-connected with the other end of the driving shaft.

[0013] Preferably, the mounting frame includes a mounting ring, a connecting column and a sliding ring. The mounting ring is coaxially arranged in the exchange seat with the driving shaft. The connecting column is distributed along the circumference of the driven shaft between the inner wall of the exchange seat and the mounting ring. The sliding ring is arranged between the mounting ring and the inner wall of the exchange seat. The connecting column slides through the sliding ring. The inner circumferential wall of the sliding ring is coaxially rotatably connected to the outer circumferential wall of the driven disk. The elastic element is sleeved on the connecting column. The elastic element is located between the sliding ring and the mounting ring. The electromagnetic ring is coaxially arranged at one end of the mounting ring facing the sliding ring.

[0014] Preferably, a conical transmission surface is provided at one end of the driven disk facing the driving disk, and a transmission rack distributed along its circumference is provided on the conical transmission surface, and a transmission tooth groove capable of meshing with the transmission rack is provided at one end of the driving disk facing the driven disk.

[0015] Preferably, the transmission shaft group also includes a stop ring fixedly arranged on the inner wall of the exchange seat, the stop ring is coaxial with the driven shaft, a conical stop surface is provided on the end of the driven disk facing away from the active disk, the conical stop surface is provided with a stop rack distributed along its circumference, and a stop tooth groove capable of engaging with the stop rack is provided on the end of the stop ring facing the driven disk.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present application flexibly arranges two turntables extending in the longitudinal direction on both sides of the exchange seat, and installs a rotary drive mechanism inside the exchange seat. The rotary drive mechanism is connected to the turntable through a set of transmission shafts that can interrupt the transmission, so that the turntable can rotate at any angle relative to the exchange seat. The problem of the existing device that the workpiece is difficult to rotate during the processing and the processing speed is slow when cooperating with the milling cutter is effectively solved, so that the workpiece can flexibly adjust its posture according to the processing requirements, thereby greatly improving the processing efficiency and accuracy.

[0018] The coordination between the turntable and the milling cutter is optimized to shorten the processing time, achieve fast and accurate processing results, and meet the requirements of modern production for flexibility and efficiency. The angle adjustment mechanism in this application can adjust the angle of the turntable relative to the vertical plane, and the universal coupling enables the rotary drive mechanism to input torque to the turntable so as to adjust the angle of the workpiece to be processed during processing to meet different processing requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a stereoscopic diagram of a machining center of the present invention.

[0020] Figure 2 It is a three-dimensional cross-sectional view of a machining center of the present invention.

[0021] Figure 3 It is a stereoscopic diagram of an exchange seat of a machining center of the present invention.

[0022] Figure 4 It is a cross-sectional view of an exchange seat in a machining center of the present invention.

[0023] Figure 5 It is a schematic diagram of the internal structure of an exchange seat in a machining center of the present invention.

[0024] Figure 6 It is a stereoscopic diagram of a mounting frame in a machining center of the present invention.

[0025] Figure 7It is a three-dimensional exploded view of a middle angle adjuster of a machining center of the present invention.

[0026] Figure 8 It is a three-dimensional exploded view of a transmission shaft group in a machining center of the present invention.

[0027] Fig. 9 It is a three-dimensional exploded view of a driven disc, a driving disc and a stop ring in a machining center of the present invention at a first viewing angle.

[0028] Fig.10 It is a three-dimensional exploded view of a driven disc, a driving disc and a stop ring in a machining center of the present invention at a second viewing angle.

[0029] The numbers in the figure are: 11, T-shaped support base; 12, stand; 13, base; 14, spindle box; 15, exchange seat; 151, avoidance; 152, tower-shaped corrugated cover; 161, placement frame; 1611, elastic element; 1612, placement ring; 1613, connecting column; 1614, sliding ring; 162, driven shaft; 163, driving shaft; 1631, driving disk; 164, driven disk; 165, electromagnetic ring; 167, driven Moving bevel gear; 168, driving bevel gear; 169, stop ring; 17, rotation drive mechanism; 18, turntable; 181, connecting plate; 182, connecting head; 2, universal coupling; 21, fixed section; 22, deflection section; 23, cross shaft; 3, angle adjustment mechanism; 31, fixed frame; 32, deflection adjustment frame; 321, adjustment ring; 3211, connecting pipe; 322, adjustment side plate; 323, guide shaft; 33, linear drive. DETAILED DESCRIPTION

[0030] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] like Figure 1 , Figure 2 and Figure 3As shown, the present application provides a machining center, including a T-shaped support base 11, a stand 12 and a base 13 capable of sliding in a horizontal direction are arranged at the top of the T-shaped support base 11, a stand driving screw for driving the stand 12 to move and a base driving screw for driving the base 13 to move are also arranged on the T-shaped support base 11, the sliding directions of the stand 12 and the base 13 are perpendicular, a spindle box 14 capable of sliding in a vertical direction and a spindle box driving screw for driving the spindle box 14 to move in a vertical direction are arranged on the stand 12, a rotatable exchange seat 15 and an exchange seat driver for driving the exchange seat 15 to rotate are arranged on the base 13, two coaxial transmission shaft groups and a rotation drive mechanism 17 for driving the two transmission shaft groups to rotate are arranged in the exchange seat 15, the opposite ends of the two transmission shaft groups extend into the exchange seat 15 and are connected to the rotation drive mechanism 17 in a manner capable of interrupting transmission, and the back ends of the two transmission shaft groups extend to the outside of the exchange seat 15 and are provided with a turntable 18 extending in the vertical direction.

[0032] The top of the T-shaped support base 11 is provided with a stand 12 and a base 13 that can slide in the horizontal direction. The movement of the stand 12 and the base 13 is controlled by their respective drive screws (stand drive screw and base drive screw), and their movement directions are perpendicular to each other. A spindle box 14 is installed on the stand 12, and the spindle box 14 can slide in the vertical direction and is equipped with a drive screw to achieve vertical movement. The spindle box 14 is equipped with a processing spindle that can be installed with a milling cutter.

[0033] A rotatable exchange seat 15 is provided on the base 13, and is driven by a rotation drive mechanism 17 of the exchange seat 15. Two transmission shaft groups sharing the same axis are integrated inside the exchange seat 15, and the rotation drive mechanism 17 realizes the rotation control of the two transmission shaft groups. Both ends of the two transmission shaft groups extend into the exchange seat 15 and are connected to the rotation drive mechanism 17 in a manner that can interrupt transmission, and the other ends extend to the outside of the exchange seat 15, and each is provided with a turntable 18 extending in the vertical direction.

[0034] When one turntable 18 rotates to align with the spindle box 14, the transmission shaft group connected to it transmits the torque of the rotary drive mechanism 17, so that the workpiece on the turntable 18 can be rotated and precisely matched with the milling cutter, achieving fast and efficient processing. The transmission shaft group connected to the other turntable 18 interrupts the torque transmission, allowing the operator to easily remove or install the workpiece on the turntable 18. This flexible transmission control not only improves the processing efficiency, but also enhances the convenience of operation, allowing the system to quickly adapt to the processing needs of different workpieces.

[0035] like Figure 4 and Figure 5As shown, a universal coupling 2 is arranged between the turntable 18 and the transmission shaft group, and an angle adjustment mechanism 3 is also arranged in the exchange seat 15. The angle adjustment mechanism 3 has an adjustment part extending to the outside of the exchange seat 15, and the adjustment part is connected to the turntable 18. The adjustment part can adjust the angle of the turntable 18 relative to the vertical plane along the longitudinal direction.

[0036] A universal coupling 2 is provided between the turntable 18 and the transmission shaft assembly to ensure that both can achieve stable power transmission at different angles. In order to further enhance the flexibility of the machining center, an angle adjustment mechanism 3 is provided inside the exchange seat 15, which can achieve precise adjustment of the longitudinal angle of the turntable 18 during the machining process. The adjustment component of the angle adjustment mechanism 3 extends to the outside of the exchange seat 15 and is directly connected to the turntable 18, so that the angle adjustment mechanism 3 adjusts the angle of the turntable 18 relative to the vertical plane in the longitudinal direction, thereby achieving precise positioning and angle control of the workpiece to be processed.

[0037] Through the flexible adjustment of the angle adjustment mechanism 3, the operator can easily cope with the processing requirements of various complex workpieces, improve the processing accuracy and efficiency, and reduce the processing errors caused by improper angles. This makes the machining center show higher adaptability and reliability in a variety of application scenarios.

[0038] like Figure 7 and Figure 8 As shown, the universal coupling 2 includes a fixed section 21 connected to the transmission shaft group, a deflection section 22 connected to the turntable 18, and a cross shaft 23 connecting the fixed section 21 and the deflection section 22. A connecting plate 181 is provided on the side of the turntable 18 opposite to the exchange seat 15. A connecting head 182 coaxial with the connecting plate 181 is provided on the end of the connecting plate 181 facing the exchange seat 15. The deflection section 22 is coaxially fixedly connected with the connecting head 182. The angle adjustment mechanism 3 also includes a fixed frame 31, a deflection adjustment frame 32 and a linear drive 33. The fixed frame 31 is provided on the side of the exchange seat 15 facing the turntable 18. On one side, the deflection adjustment frame 32 extends longitudinally, the top end of the deflection adjustment frame 32 is rotatably arranged in the fixed frame 31, the rotation axis of the deflection adjustment frame 32 relative to the fixed frame 31 is coaxial with the horizontal axis of the cross shaft 23, the deflection adjustment frame 32 has an inner cavity coaxially rotatably connected to the connecting disk 181, the universal coupling 2 is located in the inner cavity of the deflection adjustment frame 32, one end of the linear drive 33 is rotatably arranged in the exchange seat 15, and the other end of the linear drive 33 extends to the outside of the exchange seat 15 and is rotatably connected to the bottom end of the deflection adjustment frame 32.

[0039] The universal coupling 2 is composed of a fixed section 21 connected to the transmission shaft group and a deflection section 22 connected to the turntable 18, which are connected by a cross shaft 23 to ensure efficient power transmission under different working conditions. A connecting plate 181 is provided on one side of the turntable 18 and the exchange seat 15, and a coaxial connector 182 is provided on the end of the connecting plate 181 facing the turntable 18. The deflection section 22 is coaxially fixedly connected with the connector 182 to enhance transmission stability and reliability.

[0040] In order to improve the accuracy of angle adjustment, the angle adjustment mechanism 3 includes a fixed frame 31, a deflection adjustment frame 32 and a linear drive 33. The fixed frame 31 is arranged on the side of the exchange seat 15 facing the turntable 18, the deflection adjustment frame 32 is arranged longitudinally, and the top of the deflection adjustment frame 32 is connected to the fixed frame 31 through a rotating shaft. The rotation axis of the deflection adjustment frame 32 is coaxial with the horizontal axis of the cross shaft 23 to ensure the stability and consistency of the turntable 18 when adjusting the angle. The inner cavity of the deflection adjustment frame 32 is coaxially rotatably connected with the connecting disk 181, and the universal coupling 2 is located in the inner cavity of the deflection adjustment frame 32 to avoid unstable power transmission caused by angle changes. One end of the linear drive 33 is rotatably set inside the exchange seat 15, and the other end extends to the outside and is rotatably connected to the bottom end of the deflection adjustment frame 32 to ensure fast and accurate angle adjustment of the adjustment mechanism.

[0041] Through these carefully designed components, this machining center can meet diverse machining needs with greater flexibility and efficiency while reducing operational complexity and potential failure risks.

[0042] like Figure 7 As shown, the fixed frame 31 includes two fixed plates fixedly connected to the exchange seat 15, and a deflection chamber is formed between the two fixed plates for the deflection section 22 of the universal coupling 2 to deflect relative to the fixed section 21 of the universal coupling 2. The deflection adjustment frame 32 includes an adjustment ring 321, an adjustment side plate 322 and a guide shaft 323. The inner peripheral wall of the adjustment ring 321 is coaxially rotatably connected with the outer peripheral wall of the connecting plate 181. A connecting pipe 3211 is provided at one end of the adjustment ring 321 facing the exchange seat 15. The connecting pipe 3211 and the adjustment ring 321 are connected to the fixing section 21 of the universal coupling 2. An inner cavity is formed inside for accommodating the universal coupling 2, and there are two adjusting side plates 322. The two adjusting side plates 322 are extended in the vertical direction and are arranged on both sides of the connecting tube 3211. A pivot is arranged on the outer side of the adjusting side plate 322, and the axis of the pivot is coaxial with the horizontal axis of the cross shaft 23. The pivot passes through the fixed plate and is rotatably connected thereto. The guide shaft 323 is transversely arranged between the two adjusting side plates 322 and is located in the lower half of the adjusting side plates 322. The output rod of the linear drive 33 is rotatably connected to the guide shaft 323.

[0043] The fixing frame 31 is connected to the fixing plate of the exchange seat 15 through two fixing plates to form a deflection chamber, which is designed to accommodate the deflection section 22 of the universal coupling 2 to achieve flexible deflection with the fixing section 21. The inner circumferential wall of the adjustment ring 321 is coaxially connected to the outer circumferential wall of the connecting plate 181 to ensure the stability and accuracy of the rotation. A connecting pipe 3211 is provided at one end of the adjustment ring 321, and the connecting pipe 3211 and the inside of the adjustment ring 321 together form an inner cavity, which is specially used to place the universal coupling 2, effectively improving the integration and efficiency of the system.

[0044] There are two adjustment side plates 322, which are respectively arranged on both sides of the connecting pipe 3211 in the vertical direction. A pivot is installed on the outer side of the adjustment side plate 322, and the axis of the pivot is coaxial with the horizontal axis of the cross shaft 23 to ensure accurate alignment during rotation. The pivot passes through the fixed plate and is rotatably connected thereto, which enhances the coordination and responsiveness of the entire system.

[0045] The guide shaft 323 is horizontally arranged between the two adjustment side plates 322 and located at the lower part thereof, providing a rotation guide support for the deflection adjustment frame 32 to ensure that it maintains good balance and precision during the adjustment process. One end of the linear drive 33 is rotationally connected to the guide shaft 323 to ensure smooth transmission and flexible adjustment during the driving process. This enables the entire machining center to achieve more precise and efficient operations when facing complex machining tasks, thereby maximizing production efficiency and machining quality.

[0046] like Figure 4 As shown, the exchange seat 15 is provided with an avoidance opening 151 through which the linear drive 33 can pass.

[0047] The design of the exchange seat 15 integrates an avoidance opening 151, which is specifically used for the passage of the linear drive 33. This design ensures that the linear drive 33 is unobstructed during the driving process, thereby improving the operating efficiency.

[0048] like Figure 4 As shown, the diameter of the avoidance opening 151 is larger than the width of the linear drive 33 , a tower-shaped corrugated cover 152 is provided on the outer side of the avoidance opening 151 , and the end of the tower-shaped corrugated cover 152 deviating from the avoidance opening 151 is connected to the output rod of the linear drive 33 .

[0049] The escape opening 151 is equipped with a tower-shaped corrugated cover 152, which is designed to provide additional protection and support for the linear drive 33. This structure effectively prevents external debris and liquid from invading the exchange seat 15, thereby extending the service life of the equipment. The other end of the tower-shaped corrugated cover 152 is tightly connected to the connection end of the linear drive 33 and the deflection adjustment frame 32, forming a closed protective space. Not only does it ensure the smooth movement of the connection, but it also significantly reduces the potential impact of environmental factors on system performance.

[0050] like Figure 4 , Figure 6 , Figure 8 As shown, the rotary drive mechanism 17 includes a servo motor arranged in the exchange seat 15, and the transmission shaft group includes a mounting frame 161, a driven shaft 162, a driving shaft 163, a driven disk 164, and an electromagnetic ring 165 arranged in the exchange seat 15. The mounting frame 161 and the inner wall of the exchange seat 15 form a mounting cavity, and the driven shaft 162 passes through the side wall of the exchange seat 15 and is rotatably connected thereto. One end of the driven shaft 162 extending to the outside of the exchange seat 15 is coaxially connected to the fixed end of the universal coupling 2, and the other end of the driven shaft 162 extends into the mounting cavity; the driving shaft 163 and the driven shaft 162 coaxially pass through the mounting frame 161 and are rotatably connected to the mounting frame 161 A driving disk 1631 is provided at one end of the driving shaft 163 facing the driven shaft 162; the driven disk 164 is coaxially fitted and slidably provided on the driven shaft 162, and when the driven disk 164 abuts against the driving disk 1631, the driving disk 1631 drives the driven disk 164 to rotate, and the mounting frame 161 is also provided with an elastic element 1611 for guiding the driven disk 164 away from the driving disk 1631; the electromagnetic ring 165 is arranged in the mounting frame 161 and faces the driven disk 164, and the electromagnetic ring 165 is used to attract the driven disk 164 to abut against the driving disk 1631; the output shaft of the servo motor faces upward and is transmission-connected to the other end of the driving shaft 163.

[0051] The transmission shaft assembly further includes a driven bevel gear 167 disposed at one end of the driving shaft 163 and a driving bevel gear 168 coaxially disposed on the output shaft of the servo motor. The driven bevel gear 167 is meshed with the driving bevel gear 168 .

[0052] The servo motor achieves precise rotation control through an efficient transmission system. The transmission system includes a mounting frame 161, a driven shaft 162, a driving shaft 163, a driven disk 164 and an electromagnetic ring 165 inside the exchange seat 15. The mounting frame 161 and the inner wall of the exchange seat 15 form a mounting cavity to provide stable support and protection for the system. The driven shaft 162 passes through the side wall of the exchange seat 15 and is coaxially connected to the fixed end of the universal coupling 2 to achieve effective power transmission. Its other end extends into the mounting cavity to provide movement space and flexibility for the driven disk 164.

[0053] The driving shaft 163 coaxially passes through the mounting frame 161 and is rotatably connected to the mounting frame 161. An active disk 1631 is provided at one end of the driving shaft 163 facing the driven shaft 162 to ensure that the driven disk 164 can be driven to rotate during operation. When the driven disk 164 contacts the active disk 1631, the rotation of the active disk 1631 is directly transmitted to the driven disk 164, realizing torque transmission, driving the driven shaft 162 to rotate, and then rotating the turntable 18. To ensure that the driven disk 164 can smoothly move away from the active disk 1631, an elastic element 1611 is installed in the mounting frame 161 to guide the driven disk 164 to return and protect the stability of the system. The electromagnetic ring 165 is placed in the mounting frame 161, facing the driven disk 164, and attracts the driven disk 164 to contact the active disk 1631 during operation, thereby enhancing the connection stability and reliability.

[0054] The output shaft of the servo motor faces upward and is connected to the other end of the driving shaft 163 through a transmission device to form an efficient power transmission chain. The entire rotary drive mechanism 17 achieves precise control and response during operation.

[0055] like Fig. 9 and Fig.10 As shown, the mounting frame 161 includes a mounting ring 1612, a connecting column 1613 and a sliding ring 1614. The mounting ring 1612 and the driving shaft 163 are coaxially arranged in the exchange seat 15. The connecting column 1613 is distributed between the inner wall of the exchange seat 15 and the mounting ring 1612 along the circumference of the driven shaft 162. The sliding ring 1614 is arranged between the mounting ring 1612 and the inner wall of the exchange seat 15. The connecting column 1613 slides through the sliding ring 1614. The inner peripheral wall of the sliding ring 1614 is coaxially rotatably connected with the outer peripheral wall of the driven disk 164. The elastic element 1611 is sleeved on the connecting column 1613. The elastic element 1611 is located between the sliding ring 1614 and the mounting ring 1612. The electromagnetic ring 165 is coaxially arranged at one end of the mounting ring 1612 facing the sliding ring 1614.

[0056] Inside the exchange seat 15, the placement ring 1612 is coaxially arranged with the driving shaft 163 to ensure the stability and efficiency of the rotating mechanism. The connecting column 1613 is evenly distributed on the circumference of the driven shaft 162, between the inner wall of the exchange seat 15 and the placement ring 1612, providing the necessary support and guiding functions. The sliding ring 1614 is coaxially installed between the placement ring 1612 and the inner wall of the exchange seat 15. The inner peripheral wall of the sliding ring 1614 and the outer peripheral wall of the driven disk 164 are coaxially connected to each other, allowing the sliding ring 1614 to guide the driven disk 164 to axially displace, while ensuring that the torque of the driven disk 164 is not transmitted to the sliding ring 1614.

[0057] The elastic element 1611 is installed on the connecting column 1613, located between the sliding ring 1614 and the placement ring 1612, and provides a reset function. When the electromagnetic ring 165 is not powered, the elastic element 1611 causes the sliding ring 1614 to drive the driven disk 164 away from the active disk 1631, preventing the torque of the active disk 1631 from being transmitted to the driven disk 164. When powered, the magnetic force generated by the electromagnetic ring 165 overcomes the elastic force of the elastic element 1611, prompting the sliding ring 1614 to push the driven disk 164 to contact the active disk 1631, thereby realizing the rotational drive of the active disk 1631 on the driven disk 164.

[0058] like Fig. 9 and Fig.10 As shown, a conical transmission surface is provided at one end of the driven disk 164 facing the driving disk 1631, and a transmission rack distributed along its circumference is provided on the conical transmission surface. A transmission tooth groove capable of meshing with the transmission rack is provided at one end of the driving disk 1631 facing the driven disk 164.

[0059] The conical transmission surface of the driven disk 164 is evenly distributed with multiple circumferentially arranged transmission racks, which are set at precise intervals to provide ideal contact points for the active disk 1631 and ensure smooth power transmission. The active disk 1631 is provided with a transmission tooth groove that meshes with the transmission rack at one end facing the driven disk 164, so as to achieve efficient engagement and force transmission during the rotation process. When the active disk 1631 rotates, its tooth groove forms a reliable mesh with the rack of the driven disk 164, producing a stable and uniform transmission effect, significantly improving the system response speed and working accuracy.

[0060] like Figure 7 As shown, the transmission shaft group also includes a stop ring 169 fixedly arranged on the inner wall of the exchange seat 15, the stop ring 169 is coaxial with the driven shaft 162, and a conical stop surface is arranged at one end of the driven disk 164 facing away from the active disk 1631, and a stop rack distributed along its circumference is arranged on the conical stop surface, and a stop tooth groove capable of engaging with the stop rack is arranged at one end of the stop ring 169 facing the driven disk 164.

[0061] In order to prevent the driven disk 164 from rotating on its own after being away from the active disk 1631, a stop ring 169 fixed to the inner wall of the exchange seat 15 is added to the transmission shaft assembly. The stop ring 169 is coaxially arranged with the driven shaft 162, which enhances the stability and safety of the system. The end of the driven disk 164 facing the active disk 1631 is designed as a conical stop surface, which is convenient for docking with the stop ring 169. There are multiple stop racks evenly distributed on the conical stop surface. When the electromagnetic ring 165 is powered off, the driven disk 164 docks with the stop ring 169 under the action of the elastic element 1611, and the stop rack of the driven disk 164 is embedded in the stop tooth groove of the stop ring 169, ensuring that the driven disk 164 cannot drive the driven shaft 162 to rotate when rotating, thereby improving the safety and stability of the structure.

[0062] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A machining center, characterized in that: The invention comprises a T-shaped support base (11), wherein a stand (12) and a base (13) capable of sliding in a horizontal direction are arranged at the top of the T-shaped support base (11), and a stand driving screw for driving the stand (12) to move and a base driving screw for driving the base (13) to move are also arranged on the T-shaped support base (11), wherein the sliding directions of the stand (12) and the base (13) are perpendicular, and a spindle box (14) capable of moving in a vertical direction and a spindle box driving screw for driving the spindle box (14) to move in a vertical direction are arranged on the stand (12), and an exchange seat (15) capable of rotating and an exchange seat driver for driving the exchange seat (15) to rotate are arranged on the base (13), and a rotation mechanism is arranged in the exchange seat (15). There are two coaxial transmission shaft groups and a rotation drive mechanism (17) for driving the two transmission shaft groups to rotate. The opposite ends of the two transmission shaft groups extend into the exchange seat (15) and are transmission-connected to the rotation drive mechanism (17) in a manner capable of interrupting transmission. The back ends of the two transmission shaft groups both extend to the outside of the exchange seat (15) and are provided with a turntable (18) extending in a vertical direction. A universal coupling (2) is provided between the turntable (18) and the transmission shaft groups. An angle adjustment mechanism (3) is also provided in the exchange seat (15). The angle adjustment mechanism (3) has an adjustment portion extending to the outside of the exchange seat (15), the adjustment portion being connected to the turntable (18), and the adjustment portion being capable of adjusting the angle of the turntable (18) relative to a vertical plane in the longitudinal direction.

2. A machining center according to claim 1, characterized in that: The universal coupling (2) comprises a fixed section (21) connected to the transmission shaft assembly, a deflection section (22) connected to the turntable (18), and a cross shaft (23) connecting the fixed section (21) and the deflection section (22); a connecting plate (181) is provided on one side of the turntable (18) opposite to the exchange seat (15); a connecting head (182) coaxial with the connecting plate (181) is provided on one end of the connecting plate (181) facing the exchange seat (15); the deflection section (22) is coaxially fixedly connected to the connecting head (182); and the angle adjustment mechanism (3) further comprises a fixed frame (31), a deflection adjustment frame (32), and a linear drive (33). ), a fixed frame (31) is arranged on a side of the exchange seat (15) facing the turntable (18), the deflection adjustment frame (32) extends in the longitudinal direction, the top end of the deflection adjustment frame (32) is rotatably arranged in the fixed frame (31), the deflection adjustment frame (32) has an inner cavity coaxially rotatably connected to the connecting plate (181), the universal coupling (2) is located in the inner cavity of the deflection adjustment frame (32), one end of the linear drive (33) is rotatably arranged in the exchange seat (15), and the other end of the linear drive (33) extends to the outside of the exchange seat (15) and is rotatably connected to the bottom end of the deflection adjustment frame (32).

3. A machining center according to claim 2, characterized in that: The fixed frame (31) comprises two fixed plates fixedly connected to the exchange seat (15), a deflection chamber for the deflection section (22) of the universal coupling (2) to deflect relative to the fixed section (21) of the universal coupling (2) is formed between the two fixed plates, the deflection adjustment frame (32) comprises an adjustment ring (321), an adjustment side plate (322) and a guide shaft (323), the inner peripheral wall of the adjustment ring (321) is coaxially rotatably connected to the outer peripheral wall of the connection plate (181), and a connecting pipe (3211) is provided at one end of the adjustment ring (321) facing the exchange seat (15), and the connecting pipe (3211) The interior of the connecting tube (3211) and the adjusting ring (321) forms an inner cavity for accommodating the universal coupling (2); there are two adjusting side plates (322); the two adjusting side plates (322) are arranged on both sides of the connecting tube (3211) in a vertically extending manner; a pivot is arranged on the outer side of the adjusting side plate (322); the pivot passes through the fixing plate and is rotatably connected thereto; a guide shaft (323) is transversely arranged between the two adjusting side plates (322) and is located at the lower half of the adjusting side plates (322); and an output rod of the linear drive (33) is rotatably connected to the guide shaft (323).

4. A machining center according to claim 2 or 3, characterized in that: The exchange seat (15) is provided with an escape opening (151) through which the linear drive (33) can pass.

5. A machining center according to claim 4, characterized in that: The caliber of the avoidance opening (151) is greater than the width of the linear drive (33), a tower-shaped corrugated cover (152) is arranged outside the avoidance opening (151), and an end of the tower-shaped corrugated cover (152) deviating from the avoidance opening (151) is connected to an output rod of the linear drive (33).

6. A machining center according to claim 5, characterized in that: The rotary drive mechanism (17) comprises a servo motor arranged in an exchange seat (15); the transmission shaft group comprises a placement frame (161) arranged in the exchange seat (15), a driven shaft (162), a driving shaft (163), a driven disk (164), and an electromagnetic ring (165); the placement frame (161) and the inner wall of the exchange seat (15) form a placement cavity; the driven shaft (162) penetrates the side wall of the exchange seat (15) and is rotatably connected thereto; one end of the driven shaft (162) extending to the outside of the exchange seat (15) is coaxially connected to the fixed end of the universal coupling (2); the other end of the driven shaft (162) extends into the placement cavity; the driving shaft (163) and the driven shaft (162) coaxially penetrate the placement frame (161) and are rotatably connected to the placement frame (161); A driving disk (1631) is provided at one end of the driving shaft (163) facing the driven shaft (162); the driven disk (164) is coaxially fitted and slidably provided on the driven shaft (162); when the driven disk (164) abuts against the driving disk (1631), the driving disk (1631) drives the driven disk (164) to rotate; an elastic element (1611) for guiding the driven disk (164) away from the driving disk (1631) is also provided in the mounting frame (161); an electromagnetic ring (165) is provided in the mounting frame (161) and faces the driven disk (164); the electromagnetic ring (165) is used to attract the driven disk (164) to abut against the driving disk (1631); the output shaft of the servo motor faces upward and is drivingly connected to the other end of the driving shaft (163).

7. A machining center according to claim 6, characterized in that: The placement frame (161) comprises a placement ring (1612), a connecting column (1613) and a sliding ring (1614); the placement ring (1612) and the driving shaft (163) are coaxially arranged in the exchange seat (15); the connecting column (1613) is distributed between the inner wall of the exchange seat (15) and the placement ring (1612) along the circumference of the driven shaft (162); and the sliding ring (1614) is arranged between the placement ring (1612) and the inner wall of the exchange seat (15). The connecting column (1613) slides through the sliding ring (1614), the inner peripheral wall of the sliding ring (1614) is coaxially rotatably connected to the outer peripheral wall of the driven disk (164), the elastic element (1611) is sleeved on the connecting column (1613), the elastic element (1611) is located between the sliding ring (1614) and the placement ring (1612), and the electromagnetic ring (165) is coaxially arranged at one end of the placement ring (1612) facing the sliding ring (1614).

8. A machining center according to claim 6, characterized in that: One end of the driven disk (164) facing the driving disk (1631) is provided with a conical transmission surface, and a transmission rack distributed along its circumference is provided on the conical transmission surface. One end of the driving disk (1631) facing the driven disk (164) is provided with a transmission tooth groove capable of meshing with the transmission rack.

9. A machining center according to claim 8, characterized in that: The transmission shaft assembly also includes a stop ring (169) fixedly arranged on the inner wall of the exchange seat (15), the stop ring (169) being coaxial with the driven shaft (162), a conical stop surface being provided at one end of the driven disk (164) facing away from the driving disk (1631), the conical stop surface being provided with stop racks distributed along its circumference, and a stop tooth groove capable of meshing with the stop rack being provided at one end of the stop ring (169) facing the driven disk (164).

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