A multifunctional fixture for CNC machine tools

Abstract

The present invention belongs to the technical field of numerical control machine tools, and discloses a multifunctional tooling fixture for numerical control machine tools, comprising a mounting frame, a mounting ring fixedly mounted on the top of the mounting frame, a gear ring rotatably mounted in the middle of the mounting ring, a driving assembly for driving the gear ring to rotate is arranged on the mounting frame, a plurality of annular fixing rods arranged at intervals are fixedly mounted on the gear ring, the tops of the fixing rods are all rotatably connected to rotating rods, an adjusting mechanism for driving the rotating rod to swing is arranged at a position below the middle of the gear ring, and an adaptive clamping mechanism is installed on the rotating rod; the present invention can perform clamping operations on objects with regular or irregular outer surfaces, thereby improving the scope of use and the use effect.

Description

Technical Field

[0001] The invention belongs to the technical field of numerically controlled machine tools, and in particular relates to a multifunctional fixture for numerically controlled machine tools. Background Art

[0002] CNC machine tool fixtures are tools used to fix workpieces during CNC machine tool processing. They can ensure the stability and precision of the workpiece during processing; the design and selection of fixtures are crucial to improving production efficiency and ensuring product quality.

[0003] When the tooling fixture in the prior art is used to clamp an object with an irregular outer surface, the clamping end of the tooling fixture needs to be specially designed according to the outer surface shape of the object to ensure the stability of clamping the object. However, if a regular object needs to be clamped, it needs to be replaced with a tooling fixture that clamps regular objects. Therefore, there are many types of tooling fixtures, which reduces the use effect. In addition, the tooling fixture needs to be replaced frequently during use, which wastes the time of CNC machine tools in processing objects and reduces processing efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a multifunctional fixture for CNC machine tools, which can clamp objects with regular or irregular outer surfaces, increase the scope of use, reduce the frequency of replacement of the fixture, and improve the use effect.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A multifunctional fixture for a numerically controlled machine tool comprises a mounting frame, a mounting ring is fixedly mounted on the top of the mounting frame, a gear ring is rotatably mounted in the middle of the mounting ring, a driving assembly for driving the gear ring to rotate is arranged on the mounting frame, a plurality of annular fixing rods arranged at intervals are fixedly mounted on the gear ring, a rotating rod is rotatably connected to the top of each fixing rod, an adjusting mechanism for driving the rotating rod to swing is arranged at a position below the middle of the gear ring, and an adaptive clamping mechanism is installed on the rotating rod;

[0007] The adaptive clamping mechanism includes an outer cylinder, which is fixedly mounted on a rotating rod, an inner cylinder is sealingly and slidably connected inside the outer cylinder, the upper end of the inner cylinder passes through the outer cylinder and is hinged with a clamping plate, a tension spring is fixedly mounted between the inner cylinder and the outer cylinder, an inflation mechanism for filling the outer cylinder with high-pressure gas and driving the inner cylinder to telescopically move inside the outer cylinder is mounted on the mounting frame, and an exhaust mechanism for exhausting the high-pressure gas in the outer cylinder is arranged on the outer surface of the outer cylinder near the lower end.

[0008] The following is a further optimization of the above technical solution by the present invention:

[0009] A cross is fixedly connected to the inner wall of the gear ring, and the adjustment mechanism includes a connecting plate arranged at a lower position in the middle of the gear ring. An automatic telescopic rod for driving the connecting plate to move up and down is arranged between the upper end surface of the connecting plate and the cross. A plurality of push-pull rods are hinged on the outer surface of the connecting plate, and the upper ends of the push-pull rods are respectively hinged to the corresponding rotating rods.

[0010] Further optimization: the driving assembly includes an electric motor, the electric motor is fixedly mounted on the mounting frame, a gear is fixedly connected to the power output end of the electric motor, and the gear is meshingly connected with the gear ring.

[0011] Further optimization: the top of the inner cylinder is fixedly connected with a rotating pin, the outside of the rotating pin is rotatably connected with a rotating block, the outside of the rotating pin is sleeved with a torsion spring, one end of the torsion spring is fixedly connected to the outer surface of the rotating pin, and the other end of the torsion spring is fixedly connected to the rotating block; the clamping plates are respectively fixedly installed on the corresponding rotating blocks.

[0012] Further optimization: a support plate is fixedly installed at the middle position of the installation frame, and the inflation mechanism includes a rotating connecting air pipe, which is fixedly installed on the support plate. The upper end of the rotating connecting air pipe rotates and is sealed and connected to a connecting air disk. An air pump is fixedly installed on the support plate, and a connecting elbow is fixedly connected to the outlet end of the air pump. The other end of the connecting elbow is connected to the lower end of the rotating connecting air pipe.

[0013] Further optimization: the bottom end of the outer cylinder is fixedly connected with an air pipe, the other end of the air pipe passes through the corresponding fixed rod and extends to one side of the connecting gas disk, and the connecting gas disk is fixedly connected with multiple connecting gas nozzles, and the end of the air pipe away from the outer cylinder is connected to the corresponding connecting gas nozzle.

[0014] Further optimization: the exhaust mechanism includes a fixed tube, one end of the fixed tube is fixedly connected to the outer surface of the outer tube near the bottom end, the end of the fixed tube away from the outer tube is threadedly connected to a threaded connecting tube, the outer surface of the end of the threaded connecting tube away from the outer tube is fixedly connected to a mounting ring, the internal sealing sliding of the threaded connecting tube is provided with a sliding plug, the end of the sliding plug close to the outer tube is fixedly connected to a limited vent disk through a connecting rod, the limited vent disk is slidably installed in the threaded connecting tube; a plurality of vent holes are provided on the limited vent disk.

[0015] Further optimization: the external sliding sleeve of the threaded connecting pipe is provided with a sliding ring, a plurality of connecting bent rods are fixedly connected to the side of the sliding ring away from the outer tube, and the ends of the plurality of connecting bent rods away from the sliding ring are fixedly connected to the outer surface of the sliding plug;

[0016] The outer sleeve of the threaded connecting pipe is provided with a thrust spring, and the two ends of the thrust spring are respectively fixedly connected with the sliding ring and the mounting ring.

[0017] Further optimization: the connecting air disk is provided with an air release mechanism, which includes a fixed mounting cylinder fixedly mounted on the connecting air disk, a pressure spring is provided inside the fixed mounting cylinder, a ventilation limit plate is slidably connected inside the fixed mounting cylinder, and a plurality of through holes are provided on the ventilation limit plate; a hollow column is fixedly connected to the side of the ventilation limit plate away from the connecting air disk, and an end of the hollow column away from the ventilation limit plate penetrates the corresponding side of the fixed mounting cylinder and is fixedly connected with a round handle; a sealed sliding connection is provided between the hollow column and the fixed mounting cylinder.

[0018] Further optimization: an air inlet hole is opened on the outer surface of the hollow column near the ventilation limit plate; an exhaust hole is opened on the outer surface of the hollow column near the round handle, and the air inlet hole and the exhaust hole are respectively connected to the inner cavity of the hollow column.

[0019] The present invention adopts the above technical solution and has the following beneficial effects:

[0020] 1. In the present invention, the adjusting mechanism can drive the rotating rod to swing on the fixed rod, so as to adjust the position of the clamping end of the adaptive clamping mechanism, which is convenient to use and can be applicable to clamping operations on objects of different sizes. The adaptive clamping mechanism and the exhaust mechanism cooperate to clamp objects with irregular outer surfaces and objects with regular shapes, thereby improving the applicability of the overall structure and the scope of use. When clamping objects with irregular outer surfaces, there is no need to change different clamps, which improves the clamping effect of the object and further improves the production efficiency of the CNC machine tool when processing the object.

[0021] 2. The motor in the present invention can drive the gear to rotate, and the gear drives the gear ring to rotate, which can drive the object clamped by the adaptive clamping mechanism to rotate, thereby changing the circumferential position of the clamped object, facilitating adjustment operations, and facilitating the CNC machine tool to perform multi-position processing operations on the clamped object, thereby improving the practicality of the tooling fixture, and the overall structure is simple, easy to manufacture and produce, which can reduce production and use costs and improve the use effect.

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional diagram of the overall structure of Example 1 of the present invention;

[0024] Figure 2 It is a structural schematic diagram of the inflation mechanism in Example 1 of the present invention;

[0025] Figure 3 This is a schematic structural diagram of the ring gear and the drive assembly in Example 1 of the present invention;

[0026] Figure 4 Schematic diagram of the structure of the adaptive clamping mechanism in Example 1 of the present invention;

[0027] Figure 5 is a cross-sectional view of the outer cylinder in Example 1 of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of the inner cylinder in Example 1 of the present invention;

[0029] Figure 7 It is a schematic diagram of the structure at the position of the rotating pin in Example 1 of the present invention;

[0030] Figure 8 It is a schematic diagram of the structure of the exhaust mechanism in Example 1 of the present invention;

[0031] Fig. 9 This is a schematic diagram of the structure of the position of the limit vent plate in Example 1 of the present invention;

[0032] Fig.10 This is a schematic diagram of the structure at the position of the mounting ring in Example 1 of the present invention;

[0033] Fig.11 It is a structural schematic diagram of the air release mechanism in Example 1 of the present invention;

[0034] Fig.12 It is a schematic diagram of the structure of the exhaust mechanism in Example 2 of the present invention.

[0035] In the figure: 1-installation frame; 101-support plate; 102-support leg; 103-support ring; 2-adjustment mechanism; 201-installation ring; 202-gear ring; 203-cross; 204-automatic telescopic rod; 205-connection plate; 206-motor; 207-gear; 208-push-pull rod; 209-fixing rod; 210-rotation rod; 3-adaptive clamping mechanism; 301-outer cylinder; 302-limiting slide groove; 303-inner cylinder; 304-slider; 305-tension spring; 306-gas pipe; 307-rotation pin; 308-rotation block; 309-clamping plate; 310-torsion spring; 311-connecting gas disk; 312-retractable spring; 313-retractable spring; 314-retractable spring; 315-retractable spring; 316-retractable spring; 317-retractable spring; 318-retractable spring; 319-retractable spring; 320-retractable spring; 321-retractable spring; 322-retractable spring; 323-retractable spring; 324-retractable spring; 325-retractable spring; 326-retractable spring; 327-retractable spring; 328-retractable spring; 329-retractable spring; 330-retractable spring; 331-retractable spring; 332-retractable spring; 333-retractable spring; 334-retractable spring; 335-retractable spring; 336-retractable spring; 337-retractable spring; 338-retract 2-rotating connecting air pipe; 313-air pump; 314-connecting elbow pipe; 4-exhaust mechanism; 401-fixed pipe; 402-threaded connecting pipe; 403-mounting ring; 404-thrust spring; 405-sliding plug; 406-limiting vent plate; 407-connecting bent rod; 408-sliding ring; 409-exhaust pipe; 410-exhaust tension spring; 411-moving block; 412-moving pipe; 413-pressure relief port; 414-positioning plate; 5-exhaust mechanism; 501-fixed mounting cylinder; 502-pressure spring; 503-ventilation limiting plate; 504-hollow column; 505-inlet hole; 506-round handle; 507-exhaust hole. DETAILED DESCRIPTION

[0036] Example 1: Please refer to the attached Figure 1 -Attached Fig.11 A multifunctional fixture for a CNC machine tool comprises a mounting frame 1, a mounting ring 201 is fixedly mounted on the top of the mounting frame 1, a gear ring 202 is rotatably mounted in the middle of the mounting ring 201, a driving assembly for driving the gear ring 202 to rotate is arranged on the mounting frame 1, a plurality of annular fixed rods 209 arranged at intervals are fixedly mounted on the gear ring 202, a rotating rod 210 is rotatably connected to the top of the fixed rods 209, an adjusting mechanism 2 for driving the rotating rod 210 to swing is arranged at a lower position in the middle of the gear ring 202, and an adaptive clamping mechanism 3 is installed on the rotating rod 210.

[0037] A cross 203 is fixedly connected to the inner wall of the gear ring 202, and the adjustment mechanism 2 includes a connecting plate 205 arranged at a lower position in the middle of the gear ring 202. An automatic telescopic rod 204 is arranged between the upper end surface of the connecting plate 205 and the cross 203 for driving the connecting plate 205 to move up and down.

[0038] In this embodiment, the automatic telescopic rod 204 is arranged vertically, the mounting end of the automatic telescopic rod 204 is fixedly mounted on the cross 203 , and the telescopic end of the automatic telescopic rod 204 is fixedly mounted on the connecting plate 205 .

[0039] A plurality of push-pull rods 208 are hinged on the outer side of the connection plate 205 , and the upper ends of the push-pull rods 208 are hinged to the corresponding rotating rods 210 .

[0040] With this design, the automatic telescopic rod 204 works to extend or retract its telescopic end. At this time, the telescopic end of the automatic telescopic rod 204 is used to drive the connecting plate 205 to move up and down; when the connecting plate 205 moves up and down, the push-pull rod 208 drives the rotating rod 210 to swing, thereby adjusting the position of the adaptive clamping mechanism 3 for easy use.

[0041] In this embodiment, the automatic telescopic rod 204 is one of a hydraulic cylinder, a telescopic cylinder and an electric telescopic rod.

[0042] The driving assembly includes an electric motor 206 , which is fixedly mounted on the mounting frame 1 . A gear 207 is fixedly connected to a power output end of the electric motor 206 , and the gear 207 is meshedly connected to the ring gear 202 .

[0043] In this embodiment, the gear 207 is rotatably disposed inside the mounting ring 201 , and the motor 206 can also be fixedly mounted on the bottom surface of the mounting ring 201 .

[0044] In this design, the motor 206 starts to output rotational power to drive the gear 207 to rotate, the gear 207 rotates to engage the ring gear 202, and the ring gear 202 drives the fixed rod 209 and the cross 203 to rotate during the rotation. The cross 203 drives the connecting plate 205 and the push-pull rod 208 to rotate synchronously through the automatic telescopic rod 204, and the fixed rod 209 and the push-pull rod 208 drive the adaptive clamping mechanism 3 to rotate synchronously through the rotating rod 210, thereby driving the clamped object to rotate, thereby adjusting the circumferential position of the clamped object and facilitating processing operations on various sides of the object.

[0045] In this embodiment 1, the overall structure of the mounting frame 1 includes a plurality of support legs 102, the plurality of support legs 102 are ring-shaped and arranged at intervals, the cross-sectional shape of the support legs 102 is "Z"-shaped, the upper ends of the plurality of support legs 102 are fixedly connected to the same support ring 103, and the support ring 103 is fixedly sleeved on the outside of the mounting ring 201.

[0046] A support plate 101 is fixedly installed at the middle position of the plurality of support legs 102 and below the mounting ring 201 , and the support plate 101 and the mounting ring 201 are arranged in parallel.

[0047] The adaptive clamping mechanism 3 includes an outer cylinder 301, which is fixedly mounted on the rotating rod 210, and an inner cylinder 303 is sealingly and slidably connected inside the outer cylinder 301. The upper end of the inner cylinder 303 passes through the outer cylinder 301 and is hinged with a clamping plate 309. A tension spring 305 is fixedly mounted between the inner cylinder 303 and the outer cylinder 301. An inflation mechanism for filling high-pressure gas into the outer cylinder 301 and driving the inner cylinder 303 to telescopically move in the outer cylinder 301 is installed on the mounting frame 1, and an exhaust mechanism 4 for exhausting the high-pressure gas in the outer cylinder 301 is arranged on the outer surface of the outer cylinder 301 near the lower end.

[0048] A plurality of limiting sliding grooves 302 are provided on the inner surface of the outer cylinder 301 . The depth of the limiting sliding grooves 302 is less than the thickness of the wall of the outer cylinder 301 . The limiting sliding grooves 302 will not penetrate the outer surface of the outer cylinder 301 .

[0049] A plurality of sliders 304 are fixedly connected to the outer surface of the inner cylinder 303 . The sliders 304 are slidably installed in the corresponding limiting sliding grooves 302 . The inner cylinder 303 and the outer cylinder 301 are slidably and sealedly connected.

[0050] With this design, the movement of the inner cylinder 303 can be guided through the cooperation between the limiting slide groove 302 and the slider 304, and the inner cylinder 303 can be limited to rotate, thereby improving the stability of the inner cylinder 303 when moving; and the limiting slide groove 302 can also limit the extreme movement position of the slider 304, thereby preventing the inner cylinder 303 from moving out of the outer cylinder 301, which is convenient for use.

[0051] The inner cavity of the outer cylinder 301 is connected to the inner cavity of the inner cylinder 303, and the upper end surface of the inner cylinder 303 is a sealing surface. The inner cylinder 303 and the outer cylinder 301 are slidably and sealedly connected. When high-pressure gas is filled in the inner cavities of the outer cylinder 301 and the inner cylinder 303, the pressure of the high-pressure gas acts on the inner side surface of the upper end of the inner cylinder 303, thereby pushing the inner cylinder 303 to move relative to the outer cylinder 301, so that the upper ends of the multiple inner cylinders 303 move towards each other.

[0052] The tension spring 305 is installed in the inner cavity of the outer tube 301 and the inner tube 303 , one end of the tension spring 305 is fixedly connected to the inner side surface of the upper end of the inner tube 303 , and the other end of the tension spring 305 is fixedly connected to the inner bottom surface of the outer tube 301 .

[0053] When there is no high-pressure gas in the outer tube 301 and the inner tube 303 , the tension spring 305 outputs a tension force to pull the inner tube 303 to move, so that the inner tube 303 retracts into the inner cavity of the outer tube 301 for easy use.

[0054] Two mounting blocks are fixedly mounted on the top of the inner cylinder 303 , a rotating pin 307 is fixedly connected between the two mounting blocks, and a rotating block 308 is rotatably connected to the outside of the rotating pin 307 .

[0055] The outer sleeve of the rotating pin 307 is provided with a torsion spring 310, one end of the torsion spring 310 is fixedly connected to the outer surface of the rotating pin 307, and the other end of the torsion spring 310 is fixedly connected to the rotating block 308; the clamping plates 309 are fixedly installed on the corresponding rotating blocks 308 respectively.

[0056] In this embodiment, a rubber pad is provided on the side surface of the clamping plate 309 away from the rotating block 308, and a plurality of protrusions are integrally connected to the rubber pad. The plurality of protrusions are arranged at intervals. The rubber pad and the protrusions can increase the friction between the clamping plate 309 and the object to be clamped, thereby improving the clamping effect of the object to be clamped.

[0057] The inflation mechanism includes a rotating connecting air pipe 312, which is fixedly installed on the support plate 101. The rotating connecting air pipe 312 and the support plate 101 are coaxially arranged, and the upper end of the rotating connecting air pipe 312 is rotatably connected to the connecting air disk 311; the inner cavity of the connecting air disk 311 is sealed and connected to the rotating connecting air pipe 312.

[0058] An air pump 313 is fixedly mounted on the support plate 101 , and a connecting elbow 314 is fixedly connected to the outlet end of the air pump 313 , and the other end of the connecting elbow 314 is connected to the lower end of the rotating connecting air pipe 312 .

[0059] The air pump 313 outputs high-pressure gas when in operation, and delivers the high-pressure gas to the rotating connecting air pipe 312 through the connecting elbow 314, and then the high-pressure gas in the rotating connecting air pipe 312 is delivered to the connecting air disk 311, which is convenient for use.

[0060] The bottom end of the outer tube 301 is fixedly connected with an air pipe 306, the other end of the air pipe 306 passes through the corresponding fixing rod 209 and extends to one side of the connecting gas disk 311, and the connecting gas disk 311 is fixedly connected with multiple connecting gas nozzles, and the end of the air pipe 306 away from the outer tube 301 is connected to the corresponding connecting gas nozzle.

[0061] With this design, when it is necessary to clamp the object to be clamped, first place the object to be clamped in the middle position of the multiple clamping plates 309, then start the automatic telescopic rod 204, the telescopic end of the automatic telescopic rod 204 extends to drive the connecting plate 205 to move downward, at this time the connecting plate 205 drives the corresponding rotating rod 210 to rotate inward through the multiple push-pull rods 208, at this time the rotating rod 210 drives the outer cylinder 301 and the inner cylinder 303 to rotate in a direction close to each other, the inner cylinder 303 drives each clamping plate 309 to move in a direction close to each other through the corresponding rotating pin 307 and rotating block 308, so as to adjust the position of the clamping plate 309.

[0062] Then, the air pump 313 is started to output high-pressure gas, and the high-pressure gas is transported to the connecting gas disk 311 through the connecting elbow 314 and the rotating connecting gas pipe 312. The high-pressure gas in the connecting gas disk 311 is transported to the inside of the corresponding outer cylinder 301 through the gas pipe 306. At this time, the high-pressure gas continuously enters the outer cylinder 301 and moves the inner cylinder 303 outward under the push of the high-pressure gas. At this time, the inner cylinder 303 drives the clamping plate 309 to contact the outer surface of the object to be clamped, and the clamping plate 309 is rotatably connected to the inner cylinder 303 through the rotating pin 307 and the rotating block 308. At this time, the clamping plate 309 can swing adaptively according to the shape of the outer surface of the clamped object, so that the clamping plate 309 can better contact the outer surface of the clamped object, thereby completing the clamping operation of the object.

[0063] The exhaust mechanism 4 includes a fixed pipe 401 , one end of which is fixedly connected to the outer surface of the outer tube 301 near the bottom end, and the inner cavity of the fixed pipe 401 is connected to the inner cavity of the outer tube 301 .

[0064] The end of the fixed tube 401 away from the outer tube 301 is threadedly connected to a threaded connecting tube 402 , and the outer surface of the threaded connecting tube 402 away from the outer tube 301 is fixedly connected to a mounting ring 403 , and the outer surface diameter of the mounting ring 403 is larger than the outer surface diameter of the threaded connecting tube 402 .

[0065] In this embodiment, the threaded connecting tube 402 is a three-section integrated structure, specifically including a threaded section, a nut section and an optical axis section. The threaded connecting tube 402 is threadedly connected to the fixed tube 401 through the threaded section, and the outer surface shape of the nut section is a hexagonal block; the outer surface of the optical axis section is a smooth surface, and a central through hole is coaxially opened in the middle of the threaded section, the nut section and the optical axis section.

[0066] The threaded connection tube 402 is provided with a sliding plug 405 for sealing and sliding inside. One end of the sliding plug 405 close to the outer tube 301 is fixedly connected to a limiting vent plate 406 through a connecting rod. The limiting vent plate 406 is slidably installed inside the threaded connection tube 402. A plurality of vent holes are provided on the limiting vent plate 406.

[0067] In this embodiment, the outer surface diameter of the connecting rod is smaller than the inner surface diameter of the central through hole of the threaded connecting pipe 402 .

[0068] With such a design, the high-pressure gas in the outer tube 301 can enter the fixed tube 401. At this time, the high-pressure gas in the fixed tube 401 enters the threaded connecting tube 402. The high-pressure gas in the threaded connecting tube 402 enters the cavity of the sliding plug 405 close to the side of the limiting vent disk 406 through the vent holes on the limiting vent disk 406. At this time, the pressure of the high-pressure gas acts on the sliding plug 405.

[0069] The outer sliding sleeve of the threaded connecting tube 402 is provided with a sliding ring 408 , and a plurality of connecting bent rods 407 are fixedly connected to the side of the sliding ring 408 away from the outer cylinder 301 . The ends of the plurality of connecting bent rods 407 away from the sliding ring 408 are fixedly connected to the outer surface of the sliding plug 405 .

[0070] The outer sleeve of the threaded connection tube 402 is provided with a thrust spring 404 , one end of the thrust spring 404 is fixedly connected to the sliding ring 408 , and the other end of the thrust spring 404 is fixedly connected to the mounting ring 403 .

[0071] With such a design, in the initial state, the thrust spring 404 outputs a top thrust force to push the sliding ring 408 to move toward the side close to the outer tube 301, and the distance between the sliding ring 408 and the mounting ring 403 becomes larger. At this time, the sliding ring 408 drives the sliding plug 405 to move toward the side close to the outer tube 301 through the connecting bent rod 407. At this time, the end of the sliding plug 405 close to the outer tube 301 is sealed and slidably arranged in the threaded connecting tube 402. At this time, the connecting rod and the limit vent disk 406 are respectively arranged in the threaded connecting tube 402.

[0072] When the pressure of the high-pressure gas in the threaded connection tube 402 is greater than the top thrust of the thrust spring 404, the pressure of the high-pressure gas acts on the sliding plug 405 and pushes the sliding plug 405 to move to the side away from the outer tube 301. At this time, the sliding plug 405 drives the limiting vent plate 406 to move outward through the connecting rod, and the sliding plug 405 drives the sliding ring 408 to move to the side away from the outer tube 301 through the connecting bent rod 407. At this time, the sliding ring 408 compresses the thrust spring 404. When the sliding plug 405 drives the connecting rod to move out of the port of the threaded connection tube 402, the high-pressure gas in the threaded connection tube 402 is released through the vent hole and the gap between the connecting rod and the port of the threaded connection tube 402, which is convenient for use.

[0073] When in use, the air pump 313 outputs high-pressure gas to drive the inner cylinder 303 to move outward and clamp the object to be clamped through the multiple clamping plates 309; when the outer surface of the object to be clamped is an irregular shape, one of the clamping plates 309 will first contact the outer surface of the object. Since the clamping plate 309 and the object are already in contact, the clamping plate 309 that first contacts cannot move toward the middle, and the inner cylinder 303 cannot move toward the middle again. At this time, the high-pressure gas of the outer cylinder 301 enters the fixed pipe 401 and the threaded connecting pipe 40 2, the pressure of the high-pressure gas in the threaded connecting tube 402 acts on the sliding plug 405, and pushes the sliding plug 405 to move to the side away from the outer cylinder 301. At this time, the sliding plug 405 drives the limit vent plate 406 to move outward through the connecting rod, and the sliding plug 405 drives the sliding ring 408 to move to the side away from the outer cylinder 301 through the connecting bent rod 407. At this time, the sliding ring 408 compresses the thrust spring 404. Therefore, by adjusting the thrust force of the thrust spring 404, it is possible to control the pressure inside the outer cylinder 301, which is convenient for use.

[0074] When the sliding plug 405 drives the connecting rod to move out of the port of the threaded connecting tube 402, the high-pressure gas in the threaded connecting tube 402 is released through the vent hole and the gap between the connecting rod and the port of the threaded connecting tube 402. At this time, the pressure inside the outer tube 301 that first contacts the object can be reduced, thereby preventing excessive pressure and improving the use effect.

[0075] When the pressure of the high-pressure gas in the threaded connection tube 402 is less than the thrust of the thrust spring 404, the thrust output by the thrust spring 404 is used to push the sliding ring 408 and the sliding plug 405 to reset, so that the sliding plug 405 is sealed and slidably disposed in the threaded connection tube 402 at one end close to the outer tube 301. At this time, the connecting rod and the limit vent disk 406 are respectively disposed in the threaded connection tube 402.

[0076] In this embodiment, the limiting vent disc 406 is slidably connected to the inner wall of the threaded connecting tube 402. At this time, the limiting vent disc 406 can guide the movement of the sliding plug 405, so that the sliding plug 405 is more stable when moving.

[0077] The connecting gas disk 311 is provided with a degassing mechanism 5 , which can depressurize the high-pressure gas in the connecting gas disk 311 , thereby enabling the inner cylinder 303 to be pulled back under the tension of the tension spring 305 .

[0078] The degassing mechanism 5 includes a fixed installation cylinder 501 fixedly installed on the connecting gas disk 311 , and the inner cavity of the fixed installation cylinder 501 is connected to the inner cavity of the connecting gas disk 311 .

[0079] The interior of the fixed installation cylinder 501 is slidably connected with a ventilation stop plate 503 , on which a plurality of through holes are formed; the through holes connect the cavities on both sides of the ventilation stop plate 503 in the fixed installation cylinder 501 .

[0080] The ventilation limit plate 503 is fixedly connected to a hollow column 504 on one side away from the connection gas disk 311. The hollow column 504 and the ventilation limit plate 503 are coaxially arranged. One end of the hollow column 504 away from the ventilation limit plate 503 passes through the corresponding side of the fixed installation cylinder 501 and is fixedly connected to a round handle 506; the hollow column 504 and the fixed installation cylinder 501 are sealed and slidably connected.

[0081] In this embodiment, the outer surface diameter of the hollow column 504 is smaller than the outer surface diameter of the ventilation limit plate 503. With this design, after the hollow column 504 moves into the fixed installation cylinder 501, a spacing cavity is provided between the outer surface of the hollow column 504 and the inner surface of the fixed installation cylinder 501, and the spacing cavity is connected to the inner cavity of the fixed installation cylinder 501 through the through hole on the ventilation limit plate 503.

[0082] In this embodiment, a pressure spring 502 is provided inside the fixed installation cylinder 501, one end of the pressure spring 502 is fixedly connected to the inner wall of the fixed installation cylinder 501 close to the connection gas disk 311, and the other end of the pressure spring 502 is fixedly connected to the ventilation limit plate 503.

[0083] The pressure spring 502 outputs elastic force to push the ventilation limit plate 503 to move toward the side away from the connecting air disk 311. At this time, the side of the ventilation limit plate 503 away from the connecting air disk 311 is in contact with the inner surface of the fixed installation tube 501, thereby sealing the through hole on the ventilation limit plate 503 for easy use.

[0084] An air inlet 505 is provided on the outer surface of the hollow column 504 near the ventilation limit plate 503 ; an air outlet 507 is provided on the outer surface of the hollow column 504 near the round handle 506 , and the air inlet 505 and the air outlet 507 are respectively connected to the inner cavity of the hollow column 504 .

[0085] In the initial state, the pressure spring 502 outputs elastic force to push the ventilation limit plate 503 to move, so that the side of the ventilation limit plate 503 away from the connection gas disk 311 is in contact with the inner surface of the fixed mounting tube 501. At this time, the air inlet hole 505 is located at the sealed sliding connection between the hollow column 504 and the fixed mounting tube 501, thereby achieving sealing of the air inlet hole 505 to prevent the high-pressure gas in the fixed mounting tube 501 from entering the air inlet hole 505.

[0086] With this design, when it is necessary to release the high-pressure gas in the connecting gas disk 311, first press the round handle 506, and the round handle 506 drives the ventilation limit plate 503 to move toward the connecting gas disk 311 through the hollow column 504. At this time, the through hole on the ventilation limit plate 503 is no longer blocked by the inner side of the fixed mounting tube 501, and the air inlet hole 505 moves into the fixed mounting tube 501.

[0087] The high-pressure gas inside the connecting gas disk 311 will enter the cavity on the side of the ventilation limit plate 503 away from the connecting gas disk 311 through the through holes on the fixed mounting tube 501 and the ventilation limit plate 503. At this time, the high-pressure gas enters the inner cavity of the hollow column 504 through the air inlet hole 505, and is then discharged from the exhaust hole 507, thereby realizing the pressure relief operation of the high-pressure gas in the connecting gas disk 311.

[0088] When the high-pressure gas in the connecting gas disk 311 is discharged, the air inside the outer tube 301 will enter the interior of the connecting gas disk 311 through the gas pipe 306 and continue to be discharged. At this time, the inner tube 303 is pulled to perform a reset operation under the tension of the tension spring 305, so that the inner tube 303 retracts into the outer tube 301, and then the clamping plate 309 can be driven to move to the side away from the clamped object, thereby releasing the clamped object for easy use.

[0089] When in use, first place the object to be clamped in the middle position of the multiple clamping plates 309, then start the automatic telescopic rod 204, the telescopic end of the automatic telescopic rod 204 extends to drive the connecting plate 205 to move downward, at this time the connecting plate 205 drives the corresponding rotating rod 210 to rotate inward through the multiple push-pull rods 208, at this time the rotating rod 210 drives the outer cylinder 301 and the inner cylinder 303 to rotate in a direction close to each other, the inner cylinder 303 drives each clamping plate 309 to move in a direction close to each other through the corresponding rotating pin 307 and rotating block 308, so as to adjust the position of the clamping plate 309.

[0090] Then, the air pump 313 is started to output high-pressure gas, and the high-pressure gas is transported to the connecting gas disk 311 through the connecting elbow 314 and the rotating connecting gas pipe 312. The high-pressure gas in the connecting gas disk 311 is transported to the inside of the corresponding outer cylinder 301 through the gas pipe 306. At this time, the high-pressure gas continuously enters the outer cylinder 301 and moves the inner cylinder 303 outward under the push of the high-pressure gas. At this time, the inner cylinder 303 drives the clamping plate 309 to contact the outer surface of the object to be clamped, and the clamping plate 309 is rotatably connected to the inner cylinder 303 through the rotating pin 307 and the rotating block 308. At this time, the clamping plate 309 can swing adaptively according to the shape of the outer surface of the clamped object, so that the clamping plate 309 can better contact the outer surface of the clamped object, thereby completing the clamping operation of the object.

[0091] After completing the clamping operation of the object, start the motor 206 to output rotational power to drive the gear 207 to rotate, the gear 207 rotates to engage the ring gear 202, and the ring gear 202 drives the fixed rod 209 and the cross 203 to rotate during the rotation. The cross 203 drives the connecting plate 205 and the push-pull rod 208 to rotate synchronously through the automatic telescopic rod 204, and the fixed rod 209 and the push-pull rod 208 drive the adaptive clamping mechanism 3 to rotate synchronously through the rotating rod 210, thereby driving the clamped object to rotate, thereby adjusting the circumferential position of the clamped object and facilitating the processing operations on each side of the object.

[0092] When the outer surface of the object to be clamped is an irregular shape, one of the clamping plates 309 will first contact the outer surface of the object. Since the clamping plate 309 and the object are already in contact, the clamping plate 309 that is first in contact cannot move toward the middle, and the inner tube 303 cannot move toward the middle again. At this time, the high-pressure gas of the outer tube 301 enters the fixed tube 401 and the threaded connecting tube 402. The pressure of the high-pressure gas in the threaded connecting tube 402 acts on the sliding plug 405 and pushes the sliding plug 405 to move to the side away from the outer tube 301. At this time, the sliding plug 405 drives the limiting vent disk 406 to move outward through the connecting rod, and the sliding plug 405 drives the sliding ring 408 to move to the side away from the outer tube 301 through the connecting bent rod 407. At this time, the sliding ring 408 compresses the thrust spring 404. Therefore, by adjusting the thrust of the thrust spring 404, the pressure inside the outer tube 301 can be controlled, which is convenient for use.

[0093] When the sliding plug 405 drives the connecting rod to move out of the port of the threaded connecting tube 402, the high-pressure gas in the threaded connecting tube 402 is released through the vent hole and the gap between the connecting rod and the port of the threaded connecting tube 402. At this time, the pressure inside the outer tube 301 that first contacts the object can be reduced, thereby preventing excessive pressure and improving the use effect.

[0094] When the pressure of the high-pressure gas in the threaded connection tube 402 is less than the thrust of the thrust spring 404, the thrust output by the thrust spring 404 is used to push the sliding ring 408 and the sliding plug 405 to reset, so that the sliding plug 405 is sealed and slidably disposed in the threaded connection tube 402 at one end close to the outer tube 301. At this time, the connecting rod and the limit vent disk 406 are respectively disposed in the threaded connection tube 402.

[0095] When clamping is not needed, it is necessary to first release the high-pressure gas in the connecting gas disk 311. First, press the round handle 506. The round handle 506 drives the ventilation limit plate 503 to move toward the connecting gas disk 311 through the hollow column 504. At this time, the through hole and the air inlet hole 505 on the ventilation limit plate 503 are moved into the fixed installation cylinder 501.

[0096] The high-pressure gas inside the outer cylinder 301 and the connecting gas disk 311 will enter the cavity on the side of the ventilation limit plate 503 away from the connecting gas disk 311 through the through holes on the fixed installation cylinder 501 and the ventilation limit plate 503. At this time, the high-pressure gas is discharged through the air inlet hole 505, the inner cavity of the hollow column 504 and the exhaust hole 507, thereby realizing the pressure relief operation of the high-pressure gas in the connecting gas disk 311 and the outer cylinder 301, which is convenient for use.

[0097] At this time, the inner cylinder 303 is pulled to perform a reset operation under the tension of the tension spring 305, so that the inner cylinder 303 is retracted into the outer cylinder 301, and then the clamping plate 309 can be driven to move to the side away from the clamped object, thereby releasing the clamped object for easy use.

[0098] Embodiment 2: In this embodiment 2, the exhaust mechanism 4 can also be used Fig.12 In the structure shown, the exhaust mechanism 4 includes an exhaust pipe 409 , one end of which is fixedly mounted on the outer surface of the outer tube 301 near its lower end, and the inner cavity of the exhaust pipe 409 is connected to the inner cavity of the outer tube 301 .

[0099] A moving block 411 is installed in the sliding seal of the exhaust pipe 409, and an exhaust tension spring 410 is coaxially arranged in the exhaust pipe 409. One end of the exhaust tension spring 410 is fixedly connected to the inner wall of the exhaust pipe 409 close to the outer tube 301, and the other end of the exhaust tension spring 410 is fixedly connected to the moving block 411.

[0100] A moving tube 412 is fixedly installed on one side of the moving block 411 away from the exhaust tension spring 410 . The moving tube 412 and the moving block 411 are coaxially arranged, and one end of the moving tube 412 close to the moving block 411 passes through the moving block 411 and is connected to the inner cavity of the exhaust pipe 409 .

[0101] One end of the moving tube 412 away from the moving block 411 passes through the corresponding side wall of the exhaust pipe 409 and is fixedly connected to a positioning plate 414 . The connection between the moving tube 412 and the exhaust pipe 409 is a sliding sealing connection.

[0102] A pressure relief port 413 is provided on the outer surface of the moving tube 412 near the positioning plate 414 . The pressure relief port 413 is connected to the inner cavity of the moving tube 412 . The pressure relief port 413 is connected to the inner cavity of the exhaust pipe 409 through the inner cavity of the moving tube 412 .

[0103] With such a design, in the initial state, the exhaust tension spring 410 outputs a pulling force to pull the moving block 411 to move toward the side close to the outer tube 301. At this time, the positioning plate 414 is in contact with the side of the exhaust pipe 409 away from the outer tube 301. At this time, the pressure relief port 413 is located at the sliding sealing connection between the moving tube 412 and the exhaust pipe 409, thereby achieving sealing of the pressure relief port 413 to prevent the high-pressure gas in the moving tube 412 from leaking at the pressure relief port 413.

[0104] When pressure relief operation is required, the high-pressure gas in the outer tube 301 enters the exhaust pipe 409. At this time, the high-pressure gas in the exhaust pipe 409 enters the moving tube 412. When the pressure of the high-pressure gas is greater than the tension of the exhaust tension spring 410, the pressure of the high-pressure gas acts on the inner side of the moving tube 412 and pushes the moving tube 412 to move to the side away from the outer tube 301. At this time, the moving tube 412 drives the moving block 411 and the positioning plate 414 to move. At this time, the moving block 411 drives the exhaust tension spring 410 to stretch.

[0105] When the pressure relief port 413 moves to the side away from the outer tube 301 and passes over the sliding seal connection between the moving tube 412 and the exhaust pipe 409 , the high-pressure gas in the moving tube 412 is discharged through the pressure relief port 413 , thereby achieving a pressure relief operation.

[0106] When the pressure of the high-pressure gas in the outer tube 301 and the exhaust pipe 409 is less than the tension of the exhaust tension spring 410, the exhaust tension spring 410 outputs a tension force to pull the moving block 411, the moving tube 412 and the positioning plate 414 to reset, thereby making the pressure relief port 413 located at the sliding sealing connection between the moving tube 412 and the exhaust pipe 409, and sealing the pressure relief port 413 to stop the pressure relief.

[0107] It can be seen that by adjusting the tension of the exhaust tension spring 410 , the pressure of the high-pressure gas in the outer tube 301 and the exhaust pipe 409 can be adjusted.

[0108] 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 multifunctional fixture for a CNC machine tool, comprising a mounting frame (1), characterized in that: A mounting ring (201) is fixedly mounted on the top of the mounting frame (1), a gear ring (202) is rotatably mounted in the middle of the mounting ring (201), a driving assembly for driving the gear ring (202) to rotate is provided on the mounting frame (1), a plurality of annular fixed rods (209) arranged at intervals are fixedly mounted on the gear ring (202), the tops of the fixed rods (209) are all rotatably connected to rotating rods (210), an adjustment mechanism (2) for driving the rotating rod (210) to swing is provided at a position below the middle of the gear ring (202), and an adaptive clamping mechanism (3) is installed on the rotating rod (210); The adaptive clamping mechanism (3) comprises an outer cylinder (301), the outer cylinder (301) is fixedly mounted on the rotating rod (210), an inner cylinder (303) is sealingly and slidably connected inside the outer cylinder (301), the upper end of the inner cylinder (303) passes through the outer cylinder (301) and is hingedly connected to a clamping plate (309), a tension spring (305) is fixedly mounted between the inner cylinder (303) and the outer cylinder (301), an inflation mechanism for filling the outer cylinder (301) with high-pressure gas and driving the inner cylinder (303) to telescope inside the outer cylinder (301) is mounted on the mounting frame (1), and an exhaust mechanism (4) for exhausting the high-pressure gas inside the outer cylinder (301) is arranged near the lower end on the outer surface of the outer cylinder (301); The exhaust mechanism (4) comprises a fixed pipe (401), one end of the fixed pipe (401) being fixedly connected to a position close to the bottom end of the outer surface of the outer cylinder (301), one end of the fixed pipe (401) being threadedly connected to a threaded connection pipe (402) away from the outer cylinder (301), one end of the threaded connection pipe (402) being fixedly connected to a mounting ring (403) on the outer surface of one end of the threaded connection pipe (402) being away from the outer cylinder (301), a sliding plug (405) being sealingly slidably provided inside the threaded connection pipe (402), one end of the sliding plug (405) being close to the outer cylinder (301) being fixedly connected to a limited position vent disc (406) via a connecting rod, and the limited position vent disc (406) being slidably mounted inside the threaded connection pipe (402); a plurality of vent holes being provided on the limited position vent disc (406); The outer sliding sleeve of the threaded connecting pipe (402) is provided with a sliding ring (408), and a plurality of connecting bent rods (407) are fixedly connected to a side of the sliding ring (408) away from the outer cylinder (301), and ends of the plurality of connecting bent rods (407) away from the sliding ring (408) are fixedly connected to the outer surface of the sliding plug (405); The outer sleeve of the threaded connection tube (402) is provided with a thrust spring (404), and the two ends of the thrust spring (404) are respectively fixedly connected to the sliding ring (408) and the mounting ring (403).

2. The multifunctional fixture for a CNC machine tool according to claim 1, characterized in that: A cross (203) is fixedly connected to the inner wall of the gear ring (202), and the adjustment mechanism (2) comprises a connecting plate (205) arranged at a lower position in the middle of the gear ring (202). An automatic telescopic rod (204) for driving the connecting plate (205) to move up and down is arranged between the upper end surface of the connecting plate (205) and the cross (203). A plurality of push-pull rods (208) are hinged on the outer surface of the connecting plate (205), and the upper ends of the push-pull rods (208) are respectively hinged to corresponding rotating rods (210).

3. The multifunctional fixture for CNC machine tools according to claim 2, characterized in that: The driving assembly comprises an electric motor (206), the electric motor (206) being fixedly mounted on the mounting frame (1), a gear (207) being fixedly connected to a power output end of the electric motor (206), and the gear (207) being meshingly connected to the gear ring (202).

4. The multifunctional fixture for a CNC machine tool according to claim 3, characterized in that: The top of the inner cylinder (303) is fixedly connected to a rotating pin (307), the outside of the rotating pin (307) is rotatably connected to a rotating block (308), the outside of the rotating pin (307) is sleeved with a torsion spring (310), one end of the torsion spring (310) is fixedly connected to the outer surface of the rotating pin (307), and the other end of the torsion spring (310) is fixedly connected to the rotating block (308); the clamping plates (309) are respectively fixedly mounted on the corresponding rotating blocks (308).

5. The multifunctional fixture for a CNC machine tool according to claim 4, characterized in that: A support plate (101) is fixedly mounted at a middle position of the mounting frame (1), and the inflation mechanism comprises a rotatable connecting air pipe (312), the rotatable connecting air pipe (312) is fixedly mounted on the supporting plate (101), the upper end of the rotatable connecting air pipe (312) is rotatably and sealingly connected to a connecting air disk (311), an air pump (313) is fixedly mounted on the supporting plate (101), the outlet end of the air pump (313) is fixedly connected to a connecting elbow (314), and the other end of the connecting elbow (314) is connected to the lower end of the rotatable connecting air pipe (312).

6. The multifunctional fixture for a CNC machine tool according to claim 5, characterized in that: The bottom end of the outer cylinder (301) is fixedly connected to an air supply pipe (306), the other end of the air supply pipe (306) passes through the corresponding fixing rod (209) and extends to one side of the connecting air disk (311), and the connecting air disk (311) is fixedly connected to a plurality of connecting air nozzles, and one end of the air supply pipe (306) away from the outer cylinder (301) is connected to the corresponding connecting air nozzle.

7. The multifunctional fixture for a CNC machine tool according to claim 6, characterized in that: The connecting gas disk (311) is provided with an air release mechanism (5), which comprises a fixed installation cylinder (501) fixedly installed on the connecting gas disk (311), a pressure spring (502) being provided inside the fixed installation cylinder (501), a ventilation limit plate (503) being slidably connected inside the fixed installation cylinder (501), and a plurality of through holes being provided on the ventilation limit plate (503); a hollow column (504) is fixedly connected to a side of the ventilation limit plate (503) away from the connecting gas disk (311), and an end of the hollow column (504) away from the ventilation limit plate (503) penetrates the corresponding side surface of the fixed installation cylinder (501) and is fixedly connected to a round handle (506); and a sealing sliding connection is formed between the hollow column (504) and the fixed installation cylinder (501).

8. The multifunctional fixture for a CNC machine tool according to claim 7, characterized in that: An air inlet hole (505) is provided on the outer surface of the hollow column (504) at a position close to the ventilation stop plate (503); an air outlet hole (507) is provided on the outer surface of the hollow column (504) at a position close to the round handle (506); the air inlet hole (505) and the air outlet hole (507) are respectively connected to the inner cavity of the hollow column (504).

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