A fixture for a numerical control machining center and a working method thereof

Abstract

The present invention belongs to the technical field of fixtures and tooling, and discloses a fixture for a numerical control machining center and a working method thereof, wherein the fixture for the numerical control machining center comprises a fixed frame, a locking and fixing assembly is arranged on the bottom surface of the fixed frame, a reinforcing spindle is rotatably installed at a position close to the top surface on the inner side of the fixed frame, two circular plates are symmetrically and fixedly installed on the reinforcing spindle, a plurality of movable shells are evenly distributed and slidably installed between the two circular plates, a first automatic telescopic rod is fixedly connected to the movable shell, the telescopic end of the first automatic telescopic rod is fixedly connected to the reinforcing spindle, an arc plate is movably installed on one side of the movable shell away from the reinforcing spindle, a mounting plate is rotatably connected to the arc plate, a workpiece mounting position is arranged on one side of the mounting plate away from the arc plate; an angle adjustment assembly is arranged in the movable shell, and a rotation adjustment assembly is installed at the middle position of the arc plate; the present invention can clamp a variety of materials to be processed and can also perform multi-directional adjustment operations on their positions.

Description

Technical Field

[0001] The invention belongs to the technical field of fixtures and tools, and in particular, relates to a fixture for a numerical control machining center and a working method thereof. Background Art

[0002] CNC machining center is a highly automated, high-precision advanced processing equipment; CNC machining center has the advantages of high processing accuracy, high processing efficiency, strong processing flexibility, high degree of automation and stable processing quality. Therefore, CNC machining center is widely used in modern manufacturing industry.

[0003] When a CNC machining center processes a material, the material needs to be clamped and fixed. In the prior art, the clamping of the material is based on a workbench on the CNC machining center, and only one piece of material to be processed can be clamped at a time, which reduces the use effect.

[0004] In order to solve the above technical problems, there is a tooling in the prior art that uses multiple workstations to synchronously clamp and fix multiple materials to be processed. The Chinese invention patent with patent application number: CN202310725939.3 discloses a vertical machining center fixture, including a base, a support seat arranged on the upper surface of the base, a clamping table rotatably arranged on the support seat, a reference axis arranged on the upper surface of the clamping table, a first rotating sleeve and a second rotating sleeve rotatably sleeved on the reference axis, a first main clamping arm and a first auxiliary clamping arm arranged on the outer peripheral side of the first rotating sleeve, a second main clamping arm and a second auxiliary clamping arm arranged on the outer peripheral side of the second rotating sleeve, a support frame arranged on the upper surface of the clamping table, a lead screw rotatably inserted on the support frame, a threaded sleeve sleeved on the lead screw, a first adjustment plate for adjusting the angle of the first main clamping arm, a second adjustment plate for adjusting the angle of the second main clamping arm, and a first adjustment axis and a second adjustment axis arranged on the support frame.

[0005] The above-mentioned existing clamps are provided with multiple clamping arms on the clamping table, and the multiple clamping arms are used to synchronously clamp multiple materials to be processed. However, once the materials to be processed are clamped by the above-mentioned existing clamps, they are limited by the clamps and the fixing methods. On the one hand, it is impossible to further adjust the processed materials. When a process is completed, the operator is often required to re-clamp the processed materials, which reduces the processing efficiency of the CNC machining center. On the other hand, the existing clamps have difficulty in controlling the clamping accuracy, especially for some special-shaped parts or eccentrically clamped workpieces, stable clamping operations cannot be performed, which reduces the use effect and brings inconvenience to the processing operation of the CNC machining center. Summary of the invention

[0006] The technical problem to be solved by the present invention is that the existing clamps can only clamp processing materials of one specification, cannot clamp special-shaped parts, and cannot adjust the position of the clamped processing materials. When different processing procedures need to be performed on the processing materials, the processing materials need to be re-clamped, which cannot cooperate better with the CNC machining center, thereby reducing the use effect.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: A clamp for a CNC machining center comprises a fixed frame, which is arranged in a concave shape. A locking and fixing component for locking and positioning the fixed frame is arranged on the bottom surface of the fixed frame. A reinforcing spindle is rotatably installed at a position close to the top surface on the inner side of the fixed frame. Two circular plates are symmetrically fixedly installed on the reinforcing spindle on the inner side of the fixed frame. A plurality of movable shells are evenly distributed and slidably installed between the two circular plates. At least one first automatic telescopic rod is fixedly connected to the movable shell, and the telescopic end of the first automatic telescopic rod is fixedly connected to the reinforcing spindle. An arc plate is movably installed on the side of the movable shell away from the reinforcing spindle, and a mounting plate is rotatably connected to the arc plate. A workpiece mounting position is arranged on the side of the mounting plate away from the arc plate; an angle adjustment component for driving the arc plate to rotate is arranged in the movable shell, and a rotation adjustment component for driving the mounting plate to rotate circumferentially is installed at the middle position of the arc plate.

[0008] The following is a further optimization of the above technical solution by the present invention: The locking and fixing assembly includes a movable frame arranged on the inner side of the fixed frame and close to the inner bottom surface, a plurality of vertical rods are fixedly installed on the lower end surface of the movable frame, the lower ends of the vertical rods all penetrate the bottom surface of the fixed frame and are fixedly connected to fixed blocks, a second automatic telescopic rod is fixedly installed on the movable frame, and the telescopic end of the second automatic telescopic rod is fixedly connected to the inner bottom surface of the fixed frame.

[0009] Further optimization: A flip driving assembly for driving the reinforcing main shaft to rotate is arranged on one side surface of the fixing frame; the flip driving assembly includes a flip motor, and a first transmission assembly is arranged between one end of the reinforcing main shaft and the flip motor.

[0010] Further optimization: the angle adjustment assembly includes an arc-shaped rack, which is fixedly mounted on the outer arc surface of the arc plate, a flat plate is fixedly mounted at the middle position of the movable shell, a first gear is rotatably mounted on the flat plate, and the first gear is meshingly connected with the arc-shaped rack.

[0011] Further optimization: an angle motor is fixedly mounted on the inner side surface of the movable shell, a second transmission assembly is arranged between the angle motor and the first gear, the angle motor is started to drive the second transmission assembly to work, and the second transmission assembly drives the first gear to rotate.

[0012] Further optimization: the rotation adjustment component includes a circular shaft fixedly mounted on a side of the mounting plate away from the workpiece mounting position, the circular shaft and the mounting plate are coaxially arranged, and a rotating motor for driving the circular shaft to rotate is fixedly mounted on the arc plate.

[0013] Further optimization: an annular groove is opened on the side surface of the mounting plate away from the workpiece mounting position, the same annular plate is fixedly connected to the two side walls of the arc plate, the annular plate and the annular groove are movably connected, and a positioning component for braking the annular plate is also installed on the mounting plate.

[0014] Further optimization: the positioning assembly includes at least one third automatic telescopic rod, which is fixedly mounted on the mounting plate and located on one side of the annular plate. A positioning plate is fixedly connected to the telescopic end of the third automatic telescopic rod, and the positioning plate is matched with the annular plate.

[0015] Further optimization: a side surface of the mounting plate located at the workpiece mounting position is provided with a plurality of threaded holes, the plurality of threaded holes are arranged at intervals, at least one threaded hole is threadedly connected to a screw rod, and a pressure block is movably connected to the screw rod.

[0016] The present invention also provides a working method of a fixture for a CNC machining center, based on the above-mentioned fixture for a CNC machining center, comprising the following steps: S1: First, insert the fixed block into the T-slot on the workbench of the CNC machining center, and push the fixed frame to ensure that all the fixed blocks are inserted into the T-slot and move the fixed frame to the specified position of the workbench, connect the fixture to the external power supply, start the second automatic telescopic rod to drive the movable frame to move, and the movable frame drives the fixed block to move through the vertical rod, so that the fixed block is clamped in the T-slot of the workbench of the CNC machining center, and complete the fixed installation between the fixture and the workbench of the CNC machining center; S2: Place the material to be processed on the mounting plate, and screw the screw into the threaded hole at the appropriate position of the mounting plate according to the specifications of the processed material, and twist the screw so that the pressing block presses and fixes the processed material, and then start the flip motor to drive the first transmission assembly to drive the reinforcing spindle to rotate, so as to realize the flip conversion operation of the mounting plate, and repeat the above operation to realize the clamping and fixing operation of the processed material on different mounting plates; S3: Perform position adjustment operation on the processing material on the uppermost mounting plate, start the angle motor according to the shape of the processing material or the processing needs of the CNC machining center, the angle motor drives the second transmission component to drive the first gear to rotate, the first gear meshes with the arc rack to move, the arc rack drives the mounting plate to perform angle adjustment operation through the arc plate, adjust the processing material to a specified angle, and then start the rotary motor to drive the circular shaft to drive the mounting plate to rotate, so as to realize the rotation adjustment operation of the processing material on the mounting plate. After the position adjustment is completed, start the third automatic telescopic rod to drive the positioning plate to move to realize the positioning and locking of the annular plate, and then start the first automatic telescopic rod on the uppermost movable shell to drive the movable shell to move, adjust the processing material to a specified height, and complete the adjustment operation of the height position of the processing material; S4: Processing the material on the uppermost mounting plate through the CNC machining center. After the material is processed at one position or one process, the operation of S3 is repeated according to the actual processing needs, the material is adjusted to another processing position, and another process is processed on the material through the CNC machining center. By continuously repeating the operation of S3, multiple processes can be processed through the CNC machining center in one clamping operation. S5: After all processing steps are completed for the uppermost processing material, the mounting plate is reset, the flip motor is started to drive the first transmission assembly to drive the reinforcing spindle to rotate, and the reinforcing spindle drives the movable shell on it to rotate through the circular plate, so that the processing material on another mounting plate is flipped to the uppermost position, and the above-mentioned S3 and S4 operations are repeated to complete the processing operation of another processing material; S6: Repeat the operation of S5 above to complete the processing operation of all the processing materials clamped on the fixture, stop the operation of the CNC machining center, rotate the screw in the reverse direction, release the clamping block from clamping the processing materials, and then unload the processed materials.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects: 1. The present invention can realize the angle adjustment operation of the processing material by driving the angle motor, and can realize the rotation position adjustment operation of the processing material by driving the rotary motor. Combined with the first automatic telescopic rod driving the movable shell to move, it can realize the height adjustment operation of the processing material, so that the processing material can be processed in multiple processing steps in one clamping, which solves the inconvenience of clamping of traditional clamps and the limitation of the position of the processing materials, effectively improves the processing efficiency of the CNC machining center, and the clamp adopts automated adjustment operation, which can realize high-precision position adjustment operation of the processing material and improve the processing accuracy.

[0018] 2. The present invention inserts the fixing block into the T-slot on the workbench of the CNC machining center and drives the second automatic telescopic rod to fix the clamp to the workbench of the CNC machining center, thereby fixing the clamp on the workbench of the CNC machining center and further improving the use effect of the clamp.

[0019] 3. The present invention provides a plurality of threaded holes on the mounting plate, and uses a threaded connection between the screw rod and the threaded hole to realize the clamping operation on the processing material using a pressing block. This can not only realize the clamping of processing materials of different shapes to improve versatility, but also realize multi-point fixation to improve stability during the clamping operation.

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the overall structure of an embodiment of the present invention; Figure 2 A three-dimensional diagram of the overall structure from another perspective in an embodiment of the present invention; Figure 3 A sectional perspective view of the overall structure in an embodiment of the present invention; Figure 4 It is a schematic diagram of the structure at the position of the movable shell in an embodiment of the present invention; Figure 5 It is a schematic diagram of the structure at the position of the curved plate in an embodiment of the present invention; Figure 6 It is a schematic diagram of the structure at the position of the reinforcing main shaft in an embodiment of the present invention; Figure 7 It is a structural schematic diagram of a locking and fixing assembly in an embodiment of the present invention; Figure 8 Schematic diagram of the structure of the fixing frame in the embodiment of the present invention.

[0022] In the figure: 1-fixed frame; 2-control box; 3-locking and fixing assembly; 4-strengthening main shaft; 5-flipping drive assembly; 6-circular plate; 7-movable shell; 8-first automatic telescopic rod; 9-arc plate; 10-mounting plate; 11-threaded hole; 12-screw; 13-pressing block; 14-angle adjustment assembly; 15-rotation adjustment assembly; 16-vertical rod; 17-fixed block; 18-movable frame; 19-second automatic telescopic rod; 20-first worm gear; 21-first worm; 22-flipping motor; 23-side plate; 24-arc rack; 25-first gear; 26-rotating shaft; 27-plate; 28-second worm gear; 29-second worm; 30-angle motor; 31-rotating motor; 32-circular shaft; 33-annular groove; 34-annular plate; 35-third automatic telescopic rod; 36-positioning plate; 37-slide groove; 38-slider. DETAILED DESCRIPTION

[0023] like Figure 1-8 As shown: a clamp for a CNC machining center, comprising a fixed frame 1, the fixed frame 1 is arranged in a concave shape, a locking and fixing component 3 for locking and positioning the fixed frame 1 is arranged on the bottom surface of the fixed frame 1, a reinforcing spindle 4 is rotatably installed at the inner side of the fixed frame 1 near the top surface, two circular plates 6 are symmetrically fixedly installed on the reinforcing spindle 4 located on the inner side of the fixed frame 1, a number of movable shells 7 are evenly distributed and slidably installed between the two circular plates 6, at least one first automatic telescopic rod 8 is fixedly connected to the movable shell 7, the telescopic end of the first automatic telescopic rod 8 is fixedly connected to the reinforcing spindle 4, an arc plate 9 is movably installed on the side of the movable shell 7 away from the reinforcing spindle 4, a mounting plate 10 is rotatably connected to the arc plate 9, and a workpiece mounting position is arranged on the side of the mounting plate 10 away from the arc plate 9; an angle adjustment component 14 for driving the arc plate 9 to rotate is arranged in the movable shell 7, and a rotation adjustment component 15 for driving the mounting plate 10 to rotate circumferentially is installed at the middle position of the arc plate 9.

[0024] The locking and fixing assembly 3 includes a movable frame 18 arranged on the inner side of the fixing frame 1 and close to the inner bottom surface. A plurality of vertical rods 16 are fixedly installed on the lower end surface of the movable frame 18. The lower ends of the vertical rods 16 all penetrate the bottom surface of the fixing frame 1 and are fixedly connected to a fixing block 17. The vertical rods 16 and the fixing block 17 are combined to form an inverted T-shaped structure. The vertical rods 16 and the fixing frame 1 are slidably connected.

[0025] A second automatic telescopic rod 19 is fixedly installed on the movable frame 18, and the telescopic end of the second automatic telescopic rod 19 is fixedly connected to the inner bottom surface of the fixed frame 1; the second automatic telescopic rod 19 is used to drive the movable frame 18 to drive the vertical rod 16 and the fixed block 17 to move up and down, so as to adjust the height position of the fixed block 17.

[0026] In this embodiment, the movable frame 18 is a square frame, and the movable frame 18 is arranged parallel to and spaced apart above the inner bottom surface of the fixed frame 1. The number of the vertical rods 16 is four, and the four vertical rods 16 are respectively fixedly installed on the lower end surface of the movable frame 18 and close to the four corners.

[0027] Designed in this way, the locking and fixing component 3 is used to fix the clamp on the workbench of the CNC machining center. The specific operation process is: first, insert the fixing block 17 into the T-slot on the workbench of the CNC machining center, and push the fixing frame 1 to ensure that all the fixing blocks 17 are inserted into the T-slot, then move the fixing frame 1 to the position specified by the workbench, connect the clamp to the external power supply, start the second automatic telescopic rod 19, the second automatic telescopic rod 19 drives the movable frame 18 to move, the movable frame 18 drives the vertical rod 16 to move, and the vertical rod 16 drives the fixed block 17 to move, so that the fixed block 17 is clamped in the T-slot of the workbench of the CNC machining center, completing the fixed installation between the clamp and the workbench of the CNC machining center, which is convenient for operation.

[0028] In this embodiment, the second automatic telescopic rod 19 is one of an electric telescopic rod, a hydraulic cylinder, a pneumatic cylinder and a servo electric cylinder.

[0029] In this embodiment, the locking and fixing assembly 3 can also use multiple bolt rods, which are arranged at intervals, and the bolt rods and the inner bottom surface of the fixing frame 1 are arranged vertically. Bolt holes are opened at positions corresponding to the bolt rods on the inner bottom surface of the fixing frame 1. The bolt rods are threadedly connected to the bolt holes, and the lower ends pass through the bolt holes and are rotatably connected to the fixing blocks 17. The user twists the bolt rods to drive the fixing blocks 17 to move up and down through the thread cooperation with the bolt holes.

[0030] A flip driving assembly 5 for driving the reinforcing main shaft 4 to rotate is arranged on one side surface of the fixing frame 1 ; the flip driving assembly 5 includes a flip motor 22 , and a first transmission assembly is arranged between one end of the reinforcing main shaft 4 and the flip motor 22 .

[0031] The first transmission assembly includes two parallel and spaced side plates 23 , which are fixedly mounted on the outer side of the fixing frame 1 , and a first worm 21 is rotatably mounted between the two side plates 23 , and the first worm 21 is vertically arranged to the reinforcing main shaft 4 .

[0032] One end of the reinforcing main shaft 4 close to the first worm 21 passes through the outer side surface of the fixing frame 1 and is fixedly connected to the first worm wheel 20 . The first worm wheel 20 is meshedly connected to the first worm 21 .

[0033] The flip motor 22 is fixedly mounted on any one of the side plates 23 , and a power output end of the flip motor 22 is drivingly connected to one end of the first worm 21 .

[0034] With this design, the flip motor 22 outputs rotational power to drive the first worm 21 to rotate. The rotation of the first worm 21 drives the first worm wheel 20 meshing with it to rotate. The first worm wheel 20 drives the reinforcing main shaft 4 to rotate, thereby driving multiple mounting plates 10 to move in a circular manner and adjusting the position of the mounting plates 10; thereby, the position of the material to be processed installed on the mounting plate 10 can be adjusted, which is convenient for use.

[0035] In addition to this embodiment, the first transmission component can also adopt sprocket, chain drive; gear set drive; pulley, belt drive; synchronous pulley, synchronous belt drive, etc.

[0036] In addition to this embodiment, the flip motor 22 may also be a servo motor, and the power output end of the flip motor 22 is directly connected to one end of the reinforcing main shaft 4 in a transmission manner.

[0037] In this embodiment, a plurality of slide grooves 37 are respectively provided on one side surface of the two circular plates 6 which are close to each other, and sliders 38 are fixedly connected to the two outer sides of the movable shell 7. The sliders 38 are slidably installed in the corresponding slide grooves 37 respectively. Through the cooperation between the sliders 38 and the slide grooves 37, the movable shell 7 is more stable when moving, thereby improving the use effect.

[0038] In this embodiment, two first automatic telescopic rods 8 are fixedly installed on each movable shell 7. The two first automatic telescopic rods 8 work synchronously to drive the movable shell 7 to move closer to or away from the two sides of the reinforcement main shaft 4, thereby adjusting the position of the mounting plate 10.

[0039] In this embodiment, the first automatic telescopic rod 8 is one of an electric telescopic rod, a hydraulic cylinder, a pneumatic cylinder and a servo electric cylinder.

[0040] The mounting plate 10 is provided with a plurality of threaded holes 11 on one side surface of the workpiece mounting position. The plurality of threaded holes 11 are arranged at intervals. A screw rod 12 is threadedly connected to at least one threaded hole 11. A pressure block 13 is provided at one end of the screw rod 12 away from the mounting plate 10. The screw rod 12 and the pressure block 13 are rotationally connected.

[0041] With this design, when clamping and fixing the material to be processed, the material to be processed is first placed on the mounting plate 10, and the screw 12 is screwed into the threaded hole 11 at a suitable position on the mounting plate 10 according to the specification and shape of the processed material. By continuously twisting the screw 12, the pressing block 13 presses and fixes the processed material, and the processed material is fixedly mounted on the mounting plate 10, which is convenient for assembly and installation.

[0042] In this embodiment, a through groove is provided on a side surface of the movable shell 7 away from the reinforcing main shaft 4, and the arc plate 9 is movably installed in the through groove on the movable shell 7. Guide arc plates are fixedly connected to the two side surfaces of the arc plate 9 respectively, and guide grooves are provided at positions corresponding to the guide arc plates on the inner side surfaces of the through groove. The guide arc plates are slidably connected to the corresponding guide grooves. The arc plate 9 can be movably installed on the mounting plate 10 through the cooperation between the guide arc plate and the guide groove, which is convenient for assembly and installation. The movement of the arc plate 9 can also be guided through the cooperation between the guide arc plate and the guide groove, thereby improving the stability of the arc plate 9 during movement.

[0043] The angle adjustment assembly 14 includes an arc-shaped rack 24 , which is fixedly mounted on the outer arc surface of the arc plate 9 . A flat plate 27 is fixedly mounted at the middle position of the movable shell 7 , and a first gear 25 is rotatably mounted on the flat plate 27 . The first gear 25 is meshed and connected with the arc-shaped rack 24 .

[0044] In this embodiment, the number of the flat plates 27 on each movable shell 7 is two, and the two flat plates 27 are arranged in parallel and at intervals, and the two flat plates 27 are fixedly mounted on the movable shell 7 .

[0045] A rotating shaft 26 is coaxially and fixedly mounted on the first gear 25 . The rotating shaft 26 is arranged parallel to the axis of the arc-shaped rack 24 . Both ends of the rotating shaft 26 are rotatably connected to corresponding flat plates 27 . The rotating shaft 26 is used to support the first gear 25 to rotate.

[0046] An angle motor 30 is fixedly mounted on the inner side surface of the movable shell 7 , and a second transmission assembly is arranged between the angle motor 30 and the first gear 25 . The angle motor 30 is started to drive the second transmission assembly to work, and the second transmission assembly drives the first gear 25 to rotate.

[0047] The second transmission assembly includes a second worm 29 , one end of which is fixedly mounted on the power output end of the angle motor 30 , and the other end of the second worm 29 is rotatably mounted on the inner side of the movable housing 7 , and the second worm 29 is arranged perpendicular to the rotating shaft 26 .

[0048] A second worm gear 28 is fixedly mounted at one end of the rotating shaft 26 close to the second worm 29 , and the second worm gear 28 is meshingly connected with the second worm 29 .

[0049] With such a design, the angle motor 30 is started, and the angle motor 30 is used to drive the second worm 29 to rotate. The rotation of the second worm 29 drives the second worm wheel 28 meshing therewith to rotate. The second worm wheel 28 drives the first gear 25 to rotate through the rotating shaft 26. The rotation of the first gear 25 drives the arc plate 9 to rotate through the arc rack 24 meshing therewith. The movement of the arc plate 9 realizes the angular adjustment operation of the mounting plate 10, and the processing material can be adjusted to the specified angle, realizing the automatic position adjustment function and improving the processing efficiency.

[0050] In addition to this embodiment, the second transmission component can also adopt a sprocket, chain drive; a gear set drive; a pulley, belt drive; a synchronous pulley, synchronous belt drive, etc.

[0051] In addition to this embodiment, the angle motor 30 may also be a servo motor, and the power output end of the angle motor 30 is directly connected to one end of the rotating shaft 26; when the angle motor 30 is started, the rotating shaft 26 directly drives the first gear 25 to rotate.

[0052] The rotation adjustment assembly 15 includes a round shaft 32 fixedly mounted on a side of the mounting plate 10 away from the workpiece mounting position. The round shaft 32 is coaxially arranged with the mounting plate 10 . A rotating motor 31 for driving the round shaft 32 to rotate is fixedly mounted on the arc plate 9 .

[0053] In this embodiment, a connecting plate is fixedly connected to the mounting end of the rotating motor 31, and both ends of the connecting plate are respectively fixedly connected to the inner side surfaces of the arc plate 9. The rotating motor 31 is fixedly mounted on the arc plate 9 through the connecting plate, which is convenient for assembly and installation.

[0054] With this design, the rotating motor 31 is started, the rotating motor 31 drives the round shaft 32 to rotate, and the round shaft 32 drives the mounting plate 10 to rotate, so as to realize the rotation position adjustment operation of the processing material on the mounting plate 10, realize the automatic position adjustment function, and improve the processing efficiency.

[0055] In this embodiment, the rotating motor 31 is a servo motor, and the power output end of the rotating motor 31 is directly connected to one end of the circular shaft 32; the rotating motor 31 can drive the mounting plate 10 to rotate at a set rotation angle when started.

[0056] The mounting plate 10 has an annular groove 33 on one side thereof close to the reinforcing main shaft 4 , and the two side walls of the arc plate 9 away from the reinforcing main shaft 4 are fixedly connected with the same annular plate 34 , and the annular plate 34 is movably connected to the annular groove 33 .

[0057] The mounting plate 10 is also provided with a positioning assembly for braking the annular plate 34; the positioning assembly includes at least one third automatic telescopic rod 35, which is fixedly mounted on the mounting plate 10 and located on one side of the annular plate 34, and a positioning plate 36 is fixedly connected to the telescopic end of the third automatic telescopic rod 35, and the positioning plate 36 is matched with the annular plate 34.

[0058] With this design, the mounting plate 10 can be rotatably mounted on the arc plate 9 through the cooperation between the annular groove 33 and the annular plate 34, which facilitates assembly and installation, and the mounting plate 10 can be rotated relative to the arc plate 9 to achieve the rotational position adjustment operation of the processed material.

[0059] The third automatic telescopic rod 35 works to extend or retract its telescopic end, thereby driving the positioning plate 36 to move toward or away from the two sides of the annular plate 34. The telescopic end of the third automatic telescopic rod 35 extends to drive the positioning plate 36 to move toward the side close to the annular plate 34, and presses the positioning plate 36 against the annular plate 34. At this time, the friction between the positioning plate 36 and the annular plate 34 can be used to brake the annular plate 34, thereby effectively ensuring the stability of the processed material on the mounting plate 10 during the processing and improving the processing quality.

[0060] In this embodiment, the third automatic telescopic rod 35 is one of an electric telescopic rod, a hydraulic cylinder, a pneumatic cylinder and a servo electric cylinder.

[0061] In this embodiment, a control box 2 is also installed on the front side of the fixed frame 1, and a main controller is installed in the control box 2. The control ends of the first automatic telescopic rod 8, the second automatic telescopic rod 19, the flip motor 22, the angle motor 30, the rotating motor 31 and the third automatic telescopic rod 35 are electrically connected to the main controller respectively, and the main controller sends a control signal for independently controlling the corresponding first automatic telescopic rod 8, the second automatic telescopic rod 19, the flip motor 22, the angle motor 30, the rotating motor 31 and the third automatic telescopic rod 35 to work.

[0062] In this embodiment, the technology of the main controller controlling the first automatic telescopic rod 8, the second automatic telescopic rod 19, the flip motor 22, the angle motor 30, the rotation motor 31 and the third automatic telescopic rod 35 to work is the existing technology and will not be repeated here.

[0063] The present invention also provides a working method of a fixture for a CNC machining center, based on the above-mentioned fixture for a CNC machining center, comprising the following steps: S1: First, insert the fixed block 17 into the T-slot on the workbench of the CNC machining center, and push the fixed frame 1 to ensure that all the fixed blocks 17 are inserted into the T-slot and move the fixed frame 1 to the specified position of the workbench, connect the clamp to the external power supply, start the second automatic telescopic rod 19 to drive the movable frame 18 to move, and the movable frame 18 drives the fixed block 17 to move through the vertical rod 16, so that the fixed block 17 is clamped in the T-slot of the workbench of the CNC machining center, and complete the fixed installation between the clamp and the workbench of the CNC machining center.

[0064] S2: Place the material to be processed on the mounting plate 10, and screw the screw 12 into the threaded hole 11 at the appropriate position on the mounting plate 10 according to the specifications of the processed material, and twist the screw 12 so that the pressure block 13 presses and fixes the processed material, and then start the flipping motor 22 to drive the first transmission assembly to drive the reinforcing spindle 4 to rotate, so as to realize the flipping and conversion operation of the mounting plate 10, and repeat the above operation to realize the clamping and fixing operation of the processed material on different mounting plates 10.

[0065] In step S2, the working principle of the first transmission component is: the flip motor 22 works to output rotational power to drive the first worm 21 to rotate, the rotation of the first worm 21 drives the first worm wheel 20 meshing with it to rotate, and the first worm wheel 20 drives the reinforcing main shaft 4 to rotate, so as to drive multiple mounting plates 10 to move in a circular manner and realize the adjustment operation of the position of the mounting plates 10; it is convenient to use.

[0066] S3: Perform position adjustment operation on the processing material on the uppermost mounting plate 10, start the angle motor 30 according to the shape of the processing material or the processing needs of the CNC machining center, the angle motor 30 outputs rotational power to drive the second transmission component to drive the first gear 25 to rotate, the first gear 25 engages the arc rack 24 to move, the arc rack 24 drives the arc plate 9 to move, the arc plate 9 moves and drives the mounting plate 10 to perform angle adjustment operation, adjust the processing material to a specified angle, and then start the rotating motor 31 to drive the circular shaft 32 to drive the mounting plate 10 to rotate, so as to realize the rotation adjustment operation of the processing material on the mounting plate 10, after the position adjustment is completed, start the third automatic telescopic rod 35 to drive the positioning plate 36 to move to realize the positioning and locking of the annular plate 34, and then start the first automatic telescopic rod 8 on the uppermost movable shell 7 to drive the movable shell 7 to move, adjust the processing material to a specified height, and complete the adjustment operation of the height position of the processing material.

[0067] In step S3, the working principle of the second transmission assembly is as follows: the angle motor 30 is used to drive the second worm 29 to rotate, and the rotation of the second worm 29 drives the second worm wheel 28 meshing therewith to rotate, and the second worm wheel 28 drives the first gear 25 to rotate through the rotating shaft 26, and the rotation of the first gear 25 drives the arc plate 9 to rotate through the arc rack 24 meshing therewith, and the movement of the arc plate 9 realizes the angle adjustment operation of the mounting plate 10, thereby adjusting the processing material to the specified angle. After the adjustment is completed, the angle motor 30 is turned off, and the inclination angle of the processing material can be locked for easy use.

[0068] S4: Processing operations are performed on the processing material on the uppermost mounting plate 10 through the CNC machining center. After completing the processing of the processing material at one position or one process, the operation of S3 is repeated according to the actual processing needs, the processing material is adjusted to another processing position, and another processing operation is performed on the processing material through the CNC machining center. By continuously repeating the operation of S3, it is possible to realize processing operations of multiple processes through the CNC machining center under one clamping operation.

[0069] S5: After all processing steps are completed for the uppermost processing material, the mounting plate 10 is reset, and the flipping motor 22 is started to drive the first transmission assembly to drive the reinforcing spindle 4 to rotate. The reinforcing spindle 4 drives the movable shell 7 thereon to rotate through the circular plate 6, and the movable shell 7 drives the mounting plate 10 to rotate together, so that the processing material on the other mounting plate 10 is flipped to the uppermost position, and the above-mentioned S3 and S4 operations are repeated to complete the processing operation of another processing material.

[0070] S6: Repeat the operation of S5 above to complete the processing operation of all the processing materials clamped on the fixture, stop the operation of the CNC machining center, rotate the screw 12 in the reverse direction, release the clamping block 13 from clamping the processing materials, and then perform the unloading operation on the processed materials.

[0071] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A fixture for a CNC machining center, comprising a fixing frame (1), characterized in that: The fixing frame (1) is arranged in a concave shape, and a locking and fixing assembly (3) for locking and positioning the fixing frame (1) is arranged on the bottom surface of the fixing frame (1). A reinforcing main shaft (4) is rotatably installed at a position close to the top surface of the inner side of the fixing frame (1), and two circular plates (6) are symmetrically fixedly installed on the reinforcing main shaft (4) and located on the inner side of the fixing frame (1). A plurality of movable shells (7) are evenly distributed and slidably installed between the two circular plates (6), and at least one first automatic telescopic rod (8) is fixedly connected to the movable shell (7). The first automatic telescopic rod ( The telescopic end of the movable shell (8) is fixedly connected to the reinforcing main shaft (4), and an arc plate (9) is movably installed on the side of the movable shell (7) away from the reinforcing main shaft (4), and a mounting plate (10) is rotatably connected to the arc plate (9), and a workpiece mounting position is provided on the side of the mounting plate (10) away from the arc plate (9); an angle adjustment component (14) for driving the arc plate (9) to rotate is provided in the movable shell (7), and a rotation adjustment component (15) for driving the mounting plate (10) to rotate circumferentially is installed at the middle position of the arc plate (9).

2. A fixture for a CNC machining center according to claim 1, characterized in that: The locking and fixing assembly (3) comprises a movable frame (18) arranged inside the fixing frame (1) and close to the inner bottom surface; a plurality of vertical rods (16) are fixedly mounted on the lower end surface of the movable frame (18); the lower ends of the vertical rods (16) all penetrate the bottom surface of the fixing frame (1) and are fixedly connected to a fixing block (17); a second automatic telescopic rod (19) is fixedly mounted on the movable frame (18); and the telescopic end of the second automatic telescopic rod (19) is fixedly connected to the inner bottom surface of the fixing frame (1).

3. A fixture for a CNC machining center according to claim 2, characterized in that: A flip drive assembly (5) for driving the reinforcing main shaft (4) to rotate is arranged on one side surface of the fixing frame (1); the flip drive assembly (5) comprises a flip motor (22), and a first transmission assembly is arranged between one end of the reinforcing main shaft (4) and the flip motor (22).

4. A fixture for a CNC machining center according to claim 3, characterized in that: The angle adjustment assembly (14) comprises an arc-shaped rack (24), the arc-shaped rack (24) being fixedly mounted on the outer arc surface of the arc-shaped plate (9), a flat plate (27) being fixedly mounted at the middle position of the movable shell (7), a first gear (25) being rotatably mounted on the flat plate (27), and the first gear (25) being meshingly connected with the arc-shaped rack (24).

5. A fixture for a CNC machining center according to claim 4, characterized in that: An angle motor (30) is fixedly mounted on the inner side surface of the movable shell (7), and a second transmission assembly is arranged between the angle motor (30) and the first gear (25). When the angle motor (30) is started, the second transmission assembly is driven to work, and the second transmission assembly drives the first gear (25) to rotate.

6. A fixture for a CNC machining center according to claim 5, characterized in that: The rotation adjustment assembly (15) comprises a circular shaft (32) fixedly mounted on a side of the mounting plate (10) away from the workpiece mounting position, the circular shaft (32) being coaxially arranged with the mounting plate (10), and a rotating motor (31) for driving the circular shaft (32) to rotate being fixedly mounted on the arc plate (9).

7. A fixture for a CNC machining center according to claim 6, characterized in that: An annular groove (33) is provided on one side of the mounting plate (10) away from the workpiece mounting position. The same annular plate (34) is fixedly connected to the two side walls of the arc-shaped plate (9). The annular plate (34) and the annular groove (33) are movably connected. A positioning component for braking the annular plate (34) is also installed on the mounting plate (10).

8. The fixture for a CNC machining center according to claim 7, characterized in that: The positioning assembly comprises at least one third automatic telescopic rod (35), the third automatic telescopic rod (35) being fixedly mounted on the mounting plate (10) and located on one side of the annular plate (34), a positioning plate (36) being fixedly connected to the telescopic end of the third automatic telescopic rod (35), and the positioning plate (36) being arranged to match the annular plate (34).

9. A fixture for a CNC machining center according to claim 8, characterized in that: A plurality of threaded holes (11) are provided on a side surface of the mounting plate (10) located at the workpiece mounting position. The plurality of threaded holes (11) are arranged at intervals. A screw rod (12) is internally threadedly connected to at least one of the threaded holes (11). A pressure block (13) is movably connected to the screw rod (12).

10. A working method of a fixture for a CNC machining center, based on the fixture for a CNC machining center according to claim 9, characterized in that: The following steps are involved: S1: First, the fixed block (17) is inserted into the T-slot on the workbench of the CNC machining center, and the fixed frame (1) is pushed to ensure that all the fixed blocks (17) are inserted into the T-slot and the fixed frame (1) is moved to the specified position of the workbench, the fixture is connected to an external power supply, the second automatic telescopic rod (19) is started to drive the movable frame (18) to move, and the movable frame (18) drives the fixed block (17) to move through the vertical rod (16), so that the fixed block (17) is clamped in the T-slot of the workbench of the CNC machining center, and the fixed installation between the fixture and the workbench of the CNC machining center is completed; S2: placing the material to be processed on the mounting plate (10), and screwing the screw (12) into the threaded hole (11) at a suitable position on the mounting plate (10) according to the specifications of the processed material, and twisting the screw (12) so that the pressing block (13) presses and fixes the processed material, and then starting the flipping motor (22) to drive the first transmission component to drive the reinforcing spindle (4) to rotate, so as to realize the flipping and conversion operation of the mounting plate (10), and repeating the above operation to realize the clamping and fixing operation of the processed material on different mounting plates (10); S3: Performing a position adjustment operation on the processing material on the uppermost mounting plate (10), starting the angle motor (30) according to the shape of the processing material or the processing requirements of the CNC machining center, the angle motor (30) driving the second transmission component to drive the first gear (25) to rotate, the first gear (25) meshing with the arc rack (24) to move, the arc rack (24) driving the mounting plate (10) through the arc plate (9) to perform an angle adjustment operation, adjusting the processing material to a specified angle, then starting the rotary motor (31) to drive the circular shaft (32) to drive the mounting plate (10) to rotate, and realizing a rotation adjustment operation on the processing material on the mounting plate (10), after the position adjustment is completed, starting the third automatic telescopic rod (35) to drive the positioning plate (36) to move to realize positioning and locking of the annular plate (34), then starting the first automatic telescopic rod (8) on the uppermost movable shell (7) to drive the movable shell (7) to move, adjusting the processing material to a specified height, and completing the height position adjustment operation of the processing material; S4: Processing the material on the uppermost mounting plate (10) by means of a numerical control machining center. After the material is processed at one position or one process, the operation of S3 is repeated according to actual processing needs, the material is adjusted to another processing position, and another process is processed by means of the numerical control machining center. By continuously repeating the operation of S3, it is possible to realize processing operations of multiple processes by means of the numerical control machining center in one clamping operation. S5: After all processing steps are completed for the uppermost processing material, the mounting plate (10) is reset, and the flipping motor (22) is started to drive the first transmission assembly to drive the reinforcing spindle (4) to rotate. The reinforcing spindle (4) drives the movable shell (7) thereon to rotate through the circular plate (6), so that the processing material on the other mounting plate (10) is flipped to the uppermost position, and the above-mentioned operations of S3 and S4 are repeated to complete the processing operation of another processing material; S6: Repeat the operation of S5 above to complete the processing operation of all the processing materials clamped on the fixture, stop the operation of the CNC machining center, rotate the screw (12) in the reverse direction, release the clamping block (13) from pressing the processing materials, and then perform the unloading operation on the processed materials.

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