A vertical machining center for machining precision parts

Abstract

The present invention discloses a vertical machining center for machining precision parts, including a vertical machining center body, an XY axis moving platform and a Z axis moving mechanism are mounted inside the vertical machining center body, the Z axis moving mechanism is connected to a cutting mechanism in a transmission manner, a movable workbench is arranged on the top of the XY axis moving platform, a four-axis transmission device mounted on one side of the top of the XY axis moving platform is installed in a transmission manner on one side of the movable workbench, and an auxiliary bearing seat mounted on the other side of the top of the XY axis moving platform is mounted on the other side of the movable workbench through a bearing sleeve. The vertical machining center for machining precision parts is composed of an automatic clamping tooling by means of a movable workbench and a workpiece hole, a top pressure transmission assembly, and a clamping and locking assembly arranged in the movable workbench, and can automatically clamp the tubular workpiece to be machined in a targeted and very stable manner during subsequent use.

Description

Technical Field

[0001] The invention relates to the technical field of vertical machining centers, in particular to a vertical machining center for machining precision accessories. Background Art

[0002] A vertical machining center usually refers to a machining center in which the spindle axis is set perpendicular to the worktable. It is mainly suitable for processing complex parts such as plates, disks, molds and small shells. The vertical machining center can complete processes such as cutting, shaping, rotation, and thread cutting. It can also control three-axis, four-axis, six-axis and other multi-directional operations in the direction of operation movement. Therefore, its application range is very wide.

[0003] However, the existing vertical machining centers are not suitable for processing pipe workpieces, especially multi-position processing needs on the surface of pipe workpieces. The reason is that the tooling used in the existing vertical machining centers is mostly designed for plate-like workpieces. The clamping structure and clamping method lack the specificity and clamping stability for pipe workpieces. Therefore, in view of the above-mentioned deficiencies in the prior art, the present application will provide a vertical machining center for processing precision accessories to solve the problem. Summary of the invention

[0004] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides a vertical machining center for machining precision parts, which solves the problems raised in the above-mentioned background technology.

[0005] (II) Technical solution To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a vertical machining center for machining precision parts, comprising a vertical machining center body, wherein an XY-axis moving platform and a Z-axis moving mechanism are mounted inside the vertical machining center body, wherein the Z-axis moving mechanism is connected to a cutting mechanism in a transmission manner, and a movable workbench is arranged on the top of the XY-axis moving platform, wherein a four-axis transmission device mounted on one side of the top of the XY-axis moving platform is installed in a transmission manner on one side of the movable workbench, and an auxiliary bearing seat mounted on the other side of the top of the XY-axis moving platform is mounted on the other side of the movable workbench through a bearing sleeve; The movable workbench is provided with a workpiece hole and a mounting groove inside, respectively. The tubular workpiece can be mounted in the workpiece hole by snapping. The inner wall of the mounting groove is provided with a clearance groove which can communicate with the inner space of the workpiece hole, and a sealing cover is installed on the inner wall at the top of the mounting groove by screws. A top pressure transmission component and a clamping and locking component are respectively installed in the mounting groove and the clearance groove. The output structure of the top pressure transmission component can top pressure the clamping and locking component and make one side of the clamping and locking component pass through the clearance groove to limit the tubular workpiece inside the workpiece hole. An arc-shaped hollow plate and a supporting hollow plate are provided at the bottom of the movable workbench, an elastic rod is provided between the arc-shaped hollow plate and the supporting hollow plate, a gas valve pipe is installed inside the arc-shaped hollow plate, and an air outlet hole aligned with the workpiece hole is opened on the top of the arc-shaped hollow plate, and a protective filter is nested in the air outlet hole.

[0006] Preferably, the top pressure transmission assembly includes a top pressure cylinder and an inclined top pressure block. The shell surface of the top pressure cylinder and the bottom inner wall of the installation groove are installed by screws to facilitate subsequent disassembly and installation. The output end of the top pressure cylinder is connected to the bottom transmission of the inclined top pressure block.

[0007] Preferably, the clamping and locking assembly includes a T-rod, a clamping arc plate and a first return spring, the clamping arc plate is clamped in the give way groove, the two ends of the first return spring are respectively connected to the inner wall of the mounting groove and the surface of one end of the T-rod, the other end of the T-rod is fixedly connected to the middle surface of the clamping arc plate, the inclined surface pressing block can press the transmission T-rod and the clamping arc plate to fit and limit the tubular workpiece clamped inside the workpiece hole under the transmission of the pressing cylinder, the clamping and locking assembly is linked with the pressing transmission assembly to automatically limit and lock the tubular workpiece inside the workpiece hole.

[0008] Preferably, the elastic rod includes a movable rod and a second return spring, the two ends of the movable rod are respectively mounted on the inner side of the bottom of the arc-shaped hollow plate and clamped in the interior of the supporting hollow plate, the two ends of the second return spring are respectively fixedly connected to the bottom surface of the movable rod and the inner wall of the bottom of the supporting hollow plate, the elastic rod serves as a connection transition between the arc-shaped hollow plate and the supporting hollow plate, and can guide the arc-shaped hollow plate to make way and move after the arc-shaped hollow plate is compressed to avoid structural interference.

[0009] Preferably, a sealing ring is nested at the fitting place of the movable rod and the supporting hollow plate to ensure the sealing ring of the reciprocating fitting of the movable rod and the supporting hollow plate. The front and rear ends of the supporting hollow plate are both inclined surface structures to avoid accumulation of processing waste on the surface of the supporting hollow plate.

[0010] Preferably, an air guide hole communicating with the internal space of the arc-shaped hollow plate is opened in the top of the movable rod, and the bottom of the movable rod is equipped with a branch pipe with an output direction toward the top of the supporting hollow plate, so that compressed air can be diverted by the branch pipe to actively blow and clean the cutting waste covering the surface of the supporting hollow plate.

[0011] Preferably, a linkage rod is provided between the bottom of the movable workbench and the top of the arc-shaped hollow plate, the linkage rod comprises a linkage rod body, the bottom end of the linkage rod body is fixedly connected with a threaded rod, the threaded rod is externally threaded with a damping block that can be fitted and connected to the surface of the arc-shaped hollow plate, the top of the linkage rod body is fixedly connected to the bottom surface of the movable workbench, the linkage rod links the linkage rod in use with the arc-shaped hollow plate, and then damps and buffers the vibration of the movable workbench during use.

[0012] Preferably, a side wall of one side of the vertical machining center body is provided with a material changing trough, and a channel clearance assembly is provided outside the material changing trough. A material changing robot, a clamping assembly and a material rack which are transmission connected to the output end of the material changing robot are respectively provided outside one side of the vertical machining center body. The channel clearance assembly includes an auxiliary baffle. Electric push rods are installed at the front and rear ends of one side of the vertical machining center body. The output end of the electric push rod is transmission connected to the top structure of the auxiliary baffle, and the auxiliary baffle can cover and seal the material changing trough. The channel clearance assembly can provide clearance space for the subsequent loading and unloading of the material changing robot while ensuring the complete closed use of the internal space of the vertical machining center body, thereby avoiding structural interference.

[0013] Preferably, the clamping assembly includes a clamping cylinder, the shell surface of the clamping cylinder is installed on the output end of the material changing robot, and the two output ends of the clamping cylinder are both installed with clamping blocks, and the two relative clamping blocks clamp and displace the tubular workpiece under the sequential transmission of the clamping cylinder and the material changing robot, and finally automatically place the tubular workpiece inside the corresponding workpiece hole, thereby meeting the use requirements of automated loading and unloading.

[0014] Preferably, assembly grooves are provided in the top and bottom of the material rack, and material placement plates are provided in the two assembly grooves. The material placement plates are provided with a plurality of placement holes that can be engaged with tubular workpieces, thereby meeting the needs of batch storage of tubular workpieces. The front end surfaces of the material placement plates are respectively fixedly connected with handles and limit baffles, and the surface of the limit baffle is magnetically connected to an electromagnet nested inside the front end of the material rack, thereby ensuring that the assembly connection between the material rack and the material placement plates is stable.

[0015] Beneficial Effects The present invention provides a vertical machining center for machining precision parts, which has the following beneficial effects: 1. The vertical machining center for processing precision parts is composed of an automatic clamping tooling through a movable workbench and a workpiece hole, a top pressure transmission component, and a clamping and locking component arranged in the movable workbench. In the subsequent use process, the tubular workpiece to be processed can be automatically clamped in a targeted and very stable manner.

[0016] 2. The vertical machining center for processing precision parts is equipped with an automatic clamping tooling that is linked with a four-axis transmission device and an auxiliary bearing seat. It can drive the tubular workpiece inside the automatic clamping tooling to automatically rotate and adjust at multiple angles, thereby meeting the processing requirements of the tubular workpiece at different positions.

[0017] 3. The vertical machining center for processing precision accessories is composed of a multifunctional auxiliary device consisting of an arc-shaped hollow plate, a supporting hollow plate, an elastic rod, an air valve pipe, a linkage rod, and a protective filter. When used in combination with an automatic clamping tool, it can perform passive re-pressurization on the tubular workpiece after initial clamping and damp the vibration of the movable workbench during use. For the movable workbench and workpiece holes after use, the compressed air can be guided to the inside of the arc-shaped hollow plate through the air valve pipe, and then the air holes and the protective filter are passed through to automatically blow and clean the movable workbench and the workpiece holes.

[0018] 4. The vertical machining center for processing precision parts is equipped with a material changing robot, clamping assembly, material rack, and material placement plate combined mechanical automatic loading device. Subsequently, for the tubular workpiece to be processed, the material changing robot drives the clamping assembly to clamp it and automatically move it to the corresponding workpiece hole. Similarly, the processed tubular workpiece is also taken out by the material changing robot and the clamping assembly, thereby fully reducing the work intensity and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view schematic diagram of the first structural embodiment of the present invention; Figure 2 It is an enlarged schematic diagram of the movable workbench of the structure of the present invention; Figure 3 It is a left side schematic diagram of the four-axis transmission device of the present invention; Figure 4 It is a top view schematic diagram of the structural clamping and locking assembly of the present invention; Figure 5 It is a cross-sectional schematic diagram of the structural clamping and locking assembly of the present invention; Figure 6 It is a three-dimensional schematic diagram of the top pressure transmission assembly of the structure of the present invention; Figure 7 It is a partial cross-sectional schematic diagram of the arc-shaped hollow plate structure of the present invention; Figure 8 It is a front view schematic diagram of the second embodiment of the structure of the present invention; Fig. 9 It is an enlarged schematic diagram of the structural material rack of the present invention; Fig.10 It is an enlarged schematic diagram of the auxiliary baffle of the structure of the present invention.

[0020] In the figure: 1. Vertical machining center body; 2. XY axis moving platform; 3. Z axis moving mechanism; 4. Cutting mechanism; 5. Movable workbench; 6. Four-axis transmission device; 7. Auxiliary bearing seat; 8. Top pressure transmission assembly; 81. Top pressure cylinder; 82. Inclined top pressure block; 9. Clamping and locking assembly; 91. T-bar; 92. Clamping arc plate; 93. First return spring; 10. Arc hollow plate; 11. Support hollow plate; 12. Elastic rod; 121. Movable rod; 122. Second return spring; 13. Gas supply valve pipe; 14. Branch pipe; 15. Linkage rod; 16. Protective filter; 17. Material changing robot; 18. Clamping assembly; 19. Material rack; 20. Material placement plate; 21. Auxiliary baffle; 22. Electric push rod; 23. Tubular workpiece; 24. Workpiece hole. DETAILED DESCRIPTION

[0021] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0022] Embodiment 1 The present invention provides a technical solution: please refer to Figure 1-7 A vertical machining center for machining precision parts, comprising a vertical machining center body 1, an XY axis moving platform 2 and a Z axis moving mechanism 3 are mounted inside the vertical machining center body 1, the Z axis moving mechanism 3 is transmission-connected with a cutting mechanism 4, a movable workbench 5 is arranged on the top of the XY axis moving platform 2, a four-axis transmission device 6 installed on one side of the top of the XY axis moving platform 2 is transmission-mounted on one side of the movable workbench 5, and an auxiliary bearing seat 7 installed on the other side of the top of the XY axis moving platform 2 is mounted on the other side of the movable workbench 5 through a bearing sleeve; The movable workbench 5 is provided with a workpiece hole 24 and a mounting groove inside, respectively. The tubular workpiece 23 can be mounted in the workpiece hole 24 by snapping. The inner wall of the mounting groove is provided with a clearance groove that can communicate with the inner space of the workpiece hole 24, and a sealing cover is installed on the inner wall at the top of the mounting groove by screws. A top-pressing transmission component 8 and a clamping and locking component 9 are respectively installed in the mounting groove and the clearance groove. The output structure of the top-pressing transmission component 8 can press the clamping and locking component 9 and make one side of the clamping and locking component 9 pass through the clearance groove to limit the tubular workpiece 23 inside the workpiece hole 24. The top-pressing transmission assembly 8 includes a top-pressing cylinder 81 and an inclined top-pressing block 82. The shell surface of the top-pressing cylinder 81 is installed with screws on the inner wall of the bottom of the installation groove, which is convenient for subsequent disassembly and installation. The output end of the top-pressing cylinder 81 is transmission-connected to the bottom of the inclined top-pressing block 82. The clamping and locking assembly 9 includes a T-bar 91, a clamping arc plate 92 and a first return spring 93. The clamping arc plate 92 is clamped in the give way groove. The two ends of the first return spring 93 are respectively connected to the inner wall of the installation groove and the surface of one end of the T-bar 91. The other end of the T-bar 91 is fixedly connected to the middle surface of the clamping arc plate 92. The inclined top-pressing block 82 can press the transmission T-bar 91 and the clamping arc plate 92 under the transmission of the top-pressing cylinder 81 to fit and limit the tubular workpiece 23 clamped inside the workpiece hole 24. The clamping and locking assembly 9 is linked with the top-pressing transmission assembly 8 to automatically limit and lock the tubular workpiece 23 inside the workpiece hole 24. The bottom of the movable workbench 5 is provided with an arc-shaped hollow plate 10 and a supporting hollow plate 11. An elastic rod 12 is provided between the arc-shaped hollow plate 10 and the supporting hollow plate 11. The elastic rod 12 includes a movable rod 121 and a second return spring 122. The two ends of the movable rod 121 are respectively sleeved on the inner side of the bottom of the arc-shaped hollow plate 10 and clamped in the interior of the supporting hollow plate 11. The two ends of the second return spring 122 are respectively fixedly connected to the bottom surface of the movable rod 121 and the inner wall of the bottom of the supporting hollow plate 11. The elastic rod 12 serves as a connection between the arc-shaped hollow plate 10 and the supporting hollow plate 11. The arc-shaped hollow plate 10 is connected to the transition, and can guide the arc-shaped hollow plate 10 to move and give way after being compressed to avoid structural interference. A sealing ring is nested at the sleeve of the movable rod 121 and the supporting hollow plate 11 to ensure that the movable rod 121 and the supporting hollow plate 11 are reciprocated by the sealing ring. The front and rear ends of the supporting hollow plate 11 are both inclined surface structures to avoid the accumulation of processing waste on the surface of the supporting hollow plate 11. The interior of the arc-shaped hollow plate 10 is equipped with a gas delivery valve pipe 13, and the top of the arc-shaped hollow plate 10 is provided with an air outlet aligned with the workpiece hole 24, and a protective filter 16 is nested in the air outlet; An air guide hole communicating with the internal space of the arc-shaped hollow plate 10 is opened in the top of the movable rod 121, and the bottom of the movable rod 121 is equipped with a branch pipe 14 with an output direction toward the top of the supporting hollow plate 11, so that the branch pipe 14 can be used to divert compressed air to actively blow and clean the cutting waste covering the surface of the supporting hollow plate 11.

[0023] Specific implementation of this embodiment: Step 1: First clamp the tubular workpiece 23 to be processed inside the corresponding workpiece hole 24, then start the top pressure cylinder 81, and the output end of the top pressure cylinder 81 drives the inclined top pressure block 82 to move up and press the corresponding T-shaped rod 91, and the pressed T-shaped rod 91 will synchronously drive the clamping arc plate 92 to move until the clamping arc plate 92 fits the surface of the tubular workpiece 23, and the tubular workpiece 23 is automatically locked and limited; Step 2: Start the four-axis transmission device 6, and the four-axis transmission device 6 drives the tubular workpiece 23, the movable worktable 5 and the internal associated structure of the movable worktable 5 to perform synchronous rotation adjustment until the tubular workpiece 23 presses the transmission arc hollow plate 10 and moves the arc hollow plate 10 down a certain distance, and the elastic rod 12 and the supporting hollow plate 11 provide guidance and support respectively, thereby utilizing the reverse pressure output by the elastic rod 12 to the tubular workpiece 23 through the arc hollow plate 10 to ensure the stability and installation accuracy of the tubular workpiece 23 inside the workpiece hole 24. After completion, the transmission tubular workpiece 23, the movable worktable 5 and the internal associated structure of the movable worktable 5 are reset to the initial position through the four-axis transmission device 6; Step 3: After the tubular workpiece 23 is stably installed, the vertical machining center body 1 controls the XY axis moving platform 2, the Z axis moving mechanism 3, and the cutting mechanism 4 to automatically cut the tubular workpiece 23 on the top of the movable worktable 5; Step 4: After the vertical cutting of the tubular workpiece 23 is completed, the four-axis transmission device 6 can be started, and the four-axis transmission device 6 drives the tubular workpiece 23, the movable worktable 5 and the internal associated structure of the movable worktable 5 to perform synchronous rotation adjustment until the surface to be processed of the tubular workpiece 23 is rotated and adjusted to a suitable position, and then the third step is repeated to achieve the purpose of continuing the cutting process; Step 5: After the processing of multiple positions of the tubular workpiece 23 is completed, the top pressure cylinder 81 is closed, and the output end of the top pressure cylinder 81 drives the inclined top pressure block 82 to move down and reset. At the same time, the T-bar 91 and the clamping arc plate 92 are reset under the reset elastic force of the first reset spring 93, and then the processed tubular workpiece 23 is taken out; Step 6: Start the four-axis transmission device 6, and the four-axis transmission device 6 drives the tubular workpiece 23, the movable worktable 5 and the internal associated structure of the movable worktable 5 to rotate synchronously by ninety degrees, so that the empty workpiece hole 24 will be aligned with the protective filter 16 on the top of the arc-shaped hollow plate 10, and then, the compressed air is guided to the inside of the arc-shaped hollow plate 10 by the air valve pipe 13, and the workpiece hole 24, the movable worktable 5 and the supporting hollow plate 11 are blown clean through the air outlet and the branch pipe 14 respectively to ensure the reliability of the subsequent continuous use of the movable worktable 5 and the workpiece hole 24 and avoid the accumulation of waste on the surface of the supporting hollow plate 11. After completion, the four-axis transmission device 6 is used to reset the transmission tubular workpiece 23, the movable worktable 5 and the internal associated structure of the movable worktable 5 to the initial position, and wait for the next use.

[0024] Embodiment 2 The present invention provides another technical solution: please refer to Figure 2-10 A vertical machining center for machining precision parts, comprising a vertical machining center body 1, an XY axis moving platform 2 and a Z axis moving mechanism 3 are mounted inside the vertical machining center body 1, the Z axis moving mechanism 3 is transmission-connected with a cutting mechanism 4, a movable workbench 5 is arranged on the top of the XY axis moving platform 2, a four-axis transmission device 6 installed on one side of the top of the XY axis moving platform 2 is transmission-mounted on one side of the movable workbench 5, and an auxiliary bearing seat 7 installed on the other side of the top of the XY axis moving platform 2 is mounted on the other side of the movable workbench 5 through a bearing sleeve; The movable workbench 5 is provided with a workpiece hole 24 and a mounting groove inside, respectively. The tubular workpiece 23 can be mounted in the workpiece hole 24 by snapping. The inner wall of the mounting groove is provided with a clearance groove that can communicate with the inner space of the workpiece hole 24, and a sealing cover is installed on the inner wall at the top of the mounting groove by screws. A top-pressing transmission component 8 and a clamping and locking component 9 are respectively installed in the mounting groove and the clearance groove. The output structure of the top-pressing transmission component 8 can press the clamping and locking component 9 and make one side of the clamping and locking component 9 pass through the clearance groove to limit the tubular workpiece 23 inside the workpiece hole 24. The top-pressing transmission assembly 8 includes a top-pressing cylinder 81 and an inclined top-pressing block 82. The shell surface of the top-pressing cylinder 81 is installed with screws on the inner wall of the bottom of the installation groove, which is convenient for subsequent disassembly and installation. The output end of the top-pressing cylinder 81 is transmission-connected to the bottom of the inclined top-pressing block 82. The clamping and locking assembly 9 includes a T-bar 91, a clamping arc plate 92 and a first return spring 93. The clamping arc plate 92 is clamped in the give way groove. The two ends of the first return spring 93 are respectively connected to the inner wall of the installation groove and the surface of one end of the T-bar 91. The other end of the T-bar 91 is fixedly connected to the middle surface of the clamping arc plate 92. The inclined top-pressing block 82 can press the transmission T-bar 91 and the clamping arc plate 92 under the transmission of the top-pressing cylinder 81 to fit and limit the tubular workpiece 23 clamped inside the workpiece hole 24. The clamping and locking assembly 9 is linked with the top-pressing transmission assembly 8 to automatically limit and lock the tubular workpiece 23 inside the workpiece hole 24. The bottom of the movable workbench 5 is provided with an arc-shaped hollow plate 10 and a supporting hollow plate 11, and an elastic rod 12 is provided between the arc-shaped hollow plate 10 and the supporting hollow plate 11. The elastic rod 12 includes a movable rod 121 and a second return spring 122. The two ends of the movable rod 121 are respectively sleeved on the inner side of the bottom of the arc-shaped hollow plate 10 and clamped in the interior of the supporting hollow plate 11, and the two ends of the second return spring 122 are respectively fixedly connected to the bottom surface of the movable rod 121 and the inner wall of the bottom of the supporting hollow plate 11. The elastic rod 12 serves as a connection transition between the arc-shaped hollow plate 10 and the supporting hollow plate 11, and can guide the arc-shaped hollow plate 10 to move out of position after the arc-shaped hollow plate 10 is compressed to avoid structural interference. The movable rod 121 and the supporting hollow plate 1 1 is nested with a sealing ring to ensure that the movable rod 121 and the supporting hollow plate 11 are reciprocatedly nested with the sealing ring. The front and rear ends of the supporting hollow plate 11 are both inclined surface structures to prevent processing waste from accumulating on the surface of the supporting hollow plate 11. The interior of the arc-shaped hollow plate 10 is nested with a gas valve pipe 13, and the top of the arc-shaped hollow plate 10 is provided with an air outlet aligned with the workpiece hole 24, and a protective filter 16 is nested in the air outlet. The top of the movable rod 121 is provided with an air guide hole connected to the internal space of the arc-shaped hollow plate 10, and the bottom of the movable rod 121 is set with a branch pipe 14 at the top of the supporting hollow plate 11. The compressed air can be diverted by the branch pipe 14 to actively blow and clean the cutting waste covered on the surface of the supporting hollow plate 11; A linkage rod 15 is provided between the bottom of the movable workbench 5 and the top of the arc-shaped hollow plate 10. The linkage rod 15 includes a linkage rod body. The bottom end of the linkage rod body is fixedly connected to a threaded rod. The threaded rod is externally threaded with a damping block that can be connected to the surface of the arc-shaped hollow plate 10. The top of the linkage rod body is fixedly connected to the bottom surface of the movable workbench 5. The linkage rod 15 links the linkage rod 15 in use with the arc-shaped hollow plate 10, thereby damping and buffering the vibration of the movable workbench 5 during use. A material change slot is provided on one side wall of the main body 1 of the vertical machining center, and a channel clearance assembly is provided outside the material change slot. A material change robot 17, a clamping assembly 18 and a material rack 19 are provided outside one side of the main body 1 of the vertical machining center, respectively. The channel clearance assembly includes an auxiliary baffle 21. Electric push rods 22 are installed at the front and rear ends of one side of the main body 1 of the vertical machining center. The output end of the electric push rod 22 is connected to the top structure of the auxiliary baffle 21, and the auxiliary baffle 21 can cover and seal the material change slot. The channel clearance assembly can ensure that the internal space of the main body 1 of the vertical machining center is completely closed for use, and can also provide clearance space for the subsequent loading and unloading of the material change robot 17 to avoid structural interference. The clamping assembly 18 includes a clamping cylinder, the shell surface of which is mounted on the output end of the material changing robot 17, and clamping blocks are mounted on both output ends of the clamping cylinder. The two opposite clamping blocks clamp and displace the tubular workpiece 23 under the sequential transmission of the clamping cylinder and the material changing robot 17, and finally automatically place the tubular workpiece 23 inside the corresponding workpiece hole 24, thereby meeting the use requirements of automatic loading and unloading. Assembly grooves are provided in the top and bottom of the material rack 19, and material placement plates 20 are provided in the two assembly grooves. The material placement plates 20 are provided with a plurality of placement holes that can be engaged with the tubular workpieces 23, thereby meeting the batch storage requirements of the tubular workpieces 23. The front end surfaces of the material placement plates 20 are respectively fixedly connected with handles and limit baffles, and the surface of the limit baffle is magnetically connected with an electromagnet nested in the front end of the material rack 19, thereby ensuring that the assembly connection between the material rack 19 and the material placement plates 20 is stable.

[0025] Specific implementation of this embodiment: Step 1: Synchronously start the two electric push rods 22, and the output ends of the two electric push rods 22 synchronously drive the auxiliary baffle 21 to move up and make way, so that the material change slot is completely opened. Then, the material change robot 17 is activated, and the material change robot 17 moves the clamping assembly 18 to the outside of any tubular workpiece 23 placed in the built-in material plate 20 at the top of the material rack 19. After completion, the clamping cylinder inside the clamping assembly 18 is started, and the clamping cylinder drives the two clamping blocks to automatically clamp the target tubular workpiece 23. Subsequently, the material change robot 17 continues to move the clamping assembly 18 and the tubular workpiece 23 clamped by the clamping assembly 18, and automatically places the tubular workpiece 23 in the corresponding workpiece hole 24 on the top of the movable workbench 5 through the material change slot; After the tubular workpiece 23 is automatically placed inside the workpiece hole 24, the clamping cylinder is closed to release the clamping of the target tubular workpiece 23 by the two clamping blocks, and then the material changing robot 17 is controlled to drive the clamping assembly 18 to perform a reset movement; Step 2: Synchronously close the two electric push rods 22, and the output ends of the two electric push rods 22 synchronously drive the auxiliary baffle 21 to move down and reset, and reclose the material exchange slot. Then, start the top pressure cylinder 81, and the output end of the top pressure cylinder 81 drives the inclined top pressure block 82 to move up and press the corresponding T-shaped rod 91, and the pressed T-shaped rod 91 will synchronously drive the clamping arc plate 92 to move until the clamping arc plate 92 fits the surface of the tubular workpiece 23, and the tubular workpiece 23 is automatically locked and limited; Step 3: Start the four-axis transmission device 6, and the four-axis transmission device 6 drives the tubular workpiece 23, the movable worktable 5 and the internal associated structure of the movable worktable 5 to perform synchronous rotation adjustment until the tubular workpiece 23 presses the transmission arc hollow plate 10 and moves the arc hollow plate 10 down a certain distance, and the elastic rod 12 and the supporting hollow plate 11 provide guidance and support respectively, thereby, the reverse pressure output by the elastic rod 12 to the tubular workpiece 23 through the arc hollow plate 10 is used to ensure the stability and installation accuracy of the tubular workpiece 23 inside the workpiece hole 24. After completion, the transmission tubular workpiece 23, the movable worktable 5 and the internal associated structure of the movable worktable 5 are reset to the initial position through the four-axis transmission device 6; Step 4: After the tubular workpiece 23 is stably installed, the vertical machining center body 1 controls the XY axis moving platform 2, the Z axis moving mechanism 3, and the cutting mechanism 4 to automatically cut the tubular workpiece 23 on the top of the movable workbench 5. During the cutting process, the vibration of the movable workbench 5 during use will be transmitted to the arc hollow plate 10 by the linkage rod 15, and then the elastic rod 12 will be linked to perform synchronous damping buffering, so as to fully ensure the stability of the movable workbench 5 supporting the tubular workpiece 23; Step 5: After the vertical cutting of the tubular workpiece 23 is completed, the four-axis transmission device 6 can be started, and the four-axis transmission device 6 drives the tubular workpiece 23, the movable worktable 5 and the internal associated structure of the movable worktable 5 to perform synchronous rotation adjustment until the surface to be processed of the tubular workpiece 23 is rotated and adjusted to a suitable position, and then the fourth step is repeated to achieve the purpose of continuing the cutting process; Step 6: After the processing of multiple positions of the tubular workpiece 23 is completed, the top pressure cylinder 81 is closed, and the output end of the top pressure cylinder 81 drives the inclined top pressure block 82 to move down and reset. At the same time, the T-bar 91 and the clamping arc plate 92 are reset under the reset elastic force of the first reset spring 93; The two electric push rods 22 are started synchronously, and the output ends of the two electric push rods 22 synchronously drive the auxiliary baffle plate 21 to move upward to make way, so that the material changing slot is completely out of place. Then, the material changing robot 17 is activated, and the material changing robot 17 moves the clamping assembly 18 through the material changing slot to the outside of the processed tubular workpiece 23. After completion, the clamping cylinder inside the clamping assembly 18 is started, and the clamping cylinder drives the two clamping blocks to automatically clamp the processed tubular workpiece 23. Subsequently, the material changing robot 17 continues to move the clamping assembly 18 and the tubular workpiece 23 clamped by the clamping assembly 18, and automatically places the tubular workpiece 23 in the placement hole in the built-in material plate 20 at the bottom of the material rack 19 through the material changing slot; The two electric push rods 22 are closed synchronously, and the output ends of the two electric push rods 22 synchronously drive the auxiliary baffle 21 to move down and reset, and the material exchange trough is closed again; Step 7: Start the four-axis transmission device 6, and the four-axis transmission device 6 drives the tubular workpiece 23, the movable worktable 5 and the internal associated structure of the movable worktable 5 to rotate synchronously by ninety degrees, so that the empty workpiece hole 24 will be aligned with the protective filter 16 on the top of the arc-shaped hollow plate 10, and then, use the air valve pipe 13 to guide the compressed air to the inside of the arc-shaped hollow plate 10 and blow and clean the workpiece hole 24, the movable worktable 5 and the supporting hollow plate 11 through the air outlet and the branch pipe 14 respectively, to ensure the reliability of the subsequent continuous use of the movable worktable 5 and the workpiece hole 24 and avoid the accumulation of waste chips on the surface of the supporting hollow plate 11. After completion, the four-axis transmission device 6 is used to reset the transmission tubular workpiece 23, the movable worktable 5 and the internal associated structure of the movable worktable 5 to the initial position, and then repeat the first to seventh steps.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vertical machining center for machining precision parts, comprising a vertical machining center body (1), wherein an XY axis moving platform (2) and a Z axis moving mechanism (3) are mounted inside the vertical machining center body (1), wherein the Z axis moving mechanism (3) is transmission-connected to a cutting mechanism (4), and wherein: A movable workbench (5) is arranged on the top of the XY-axis moving platform (2); a four-axis transmission device (6) installed on one side of the top of the XY-axis moving platform (2) is transmission-mounted on one side of the movable workbench (5); and an auxiliary bearing seat (7) installed on the other side of the top of the XY-axis moving platform (2) is provided on the other side of the movable workbench (5) via a bearing sleeve; The movable workbench (5) is provided with a workpiece hole (24) and a mounting groove inside, respectively. The tubular workpiece (23) can be mounted in the workpiece hole (24) by snapping. The inner wall of the mounting groove is provided with a clearance groove that can communicate with the inner space of the workpiece hole (24), and a sealing cover is installed on the inner wall at the top of the mounting groove by screws. A top pressure transmission component (8) and a clamping and locking component (9) are respectively installed in the mounting groove and the clearance groove. The output structure of the top pressure transmission component (8) can top-press the clamping and locking component (9) and enable one side of the clamping and locking component (9) to penetrate the clearance groove to limit the tubular workpiece (23) inside the workpiece hole (24); The bottom of the movable workbench (5) is provided with an arc-shaped hollow plate (10) and a supporting hollow plate (11), an elastic rod (12) is provided between the arc-shaped hollow plate (10) and the supporting hollow plate (11), a gas valve pipe (13) is sleeved inside the arc-shaped hollow plate (10), and an air outlet hole aligned with the workpiece hole (24) is opened on the top of the arc-shaped hollow plate (10), and a protective filter screen (16) is embedded in the air outlet hole.

2. A vertical machining center for machining precision parts according to claim 1, characterized in that: The top-pressing transmission assembly (8) comprises a top-pressing cylinder (81) and an inclined top-pressing block (82); the shell surface of the top-pressing cylinder (81) and the inner wall of the bottom of the mounting groove are mounted via screws; the output end of the top-pressing cylinder (81) is transmission-connected to the bottom of the inclined top-pressing block (82).

3. A vertical machining center for machining precision parts according to claim 2, characterized in that: The clamping and locking assembly (9) comprises a T-shaped rod (91), a clamping arc plate (92) and a first return spring (93); the clamping arc plate (92) is clamped in the clearance groove; the two ends of the first return spring (93) are respectively connected to the inner wall of the installation groove and the surface of one end of the T-shaped rod (91); the other end of the T-shaped rod (91) is fixedly connected to the middle surface of the clamping arc plate (92); the inclined surface pressing block (82) can press the transmission T-shaped rod (91) and the clamping arc plate (92) under the transmission of the pressing cylinder (81) to fit and limit the tubular workpiece (23) clamped inside the workpiece hole (24).

4. A vertical machining center for machining precision parts according to claim 1, characterized in that: The elastic rod (12) comprises a movable rod (121) and a second return spring (122); the two ends of the movable rod (121) are respectively sleeved on the inner side of the bottom of the arc-shaped hollow plate (10) and clamped inside the supporting hollow plate (11); the two ends of the second return spring (122) are respectively fixedly connected to the bottom surface of the movable rod (121) and the inner wall of the bottom of the supporting hollow plate (11).

5. A vertical machining center for machining precision parts according to claim 4, characterized in that: A sealing ring is embedded in the fitting position between the movable rod (121) and the supporting hollow plate (11), and the front and rear ends of the supporting hollow plate (11) are both inclined surface structures.

6. A vertical machining center for machining precision parts according to claim 4, characterized in that: An air guide hole communicating with the internal space of the arc-shaped hollow plate (10) is provided in the top of the movable rod (121), and the bottom of the movable rod (121) is provided with an output direction toward the branch pipe (14) supporting the top of the hollow plate (11).

7. A vertical machining center for machining precision parts according to claim 1, characterized in that: A linkage rod (15) is provided between the bottom of the movable workbench (5) and the top of the arc-shaped hollow plate (10), and the linkage rod (15) comprises a linkage rod body, a threaded rod is fixedly connected to the bottom end of the linkage rod body, and a damping block capable of being fitted and connected to the surface of the arc-shaped hollow plate (10) is externally threadedly connected to the threaded rod, and the top of the linkage rod body is fixedly connected to the bottom surface of the movable workbench (5).

8. A vertical machining center for machining precision parts according to claim 1, characterized in that: A material change trough is provided on a side wall of one side of the vertical machining center body (1), and a channel clearance assembly is provided outside the material change trough. A material change robot (17), a clamping assembly (18) connected to the output end of the material change robot (17) and a material rack (19) are provided outside one side of the vertical machining center body (1), and the channel clearance assembly includes an auxiliary baffle (21). Electric push rods (22) are installed at the front and rear ends of one side of the vertical machining center body (1), and the output end of the electric push rod (22) is connected to the top structure of the auxiliary baffle (21) in a transmission manner, and the auxiliary baffle (21) can cover and seal the material change trough.

9. A vertical machining center for machining precision parts according to claim 8, characterized in that: The clamping assembly (18) comprises a clamping cylinder, the shell surface of which is mounted on the output end of the material changing robot (17), and clamping blocks are mounted on both output ends of the clamping cylinder. The two opposing clamping blocks clamp and displace the tubular workpiece (23) under the sequential transmission of the clamping cylinder and the material changing robot (17), and finally automatically place the tubular workpiece (23) inside the corresponding workpiece hole (24).

10. A vertical machining center for machining precision parts according to claim 8, characterized in that: The top and bottom of the material rack (19) are both provided with assembly grooves, and the two assembly grooves are both provided with material placement plates (20), and the material placement plates (20) are provided with a plurality of placement holes capable of being engaged with the tubular workpiece (23). The front end surfaces of the material placement plates (20) are respectively fixedly connected with a handle and a limit baffle, and the surface of the limit baffle is magnetically connected with an electromagnet nested in the front end of the material rack (19).

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