CN116619099B

CN116619099B - Clamping mechanism of numerical control boring machine

Info

Publication number: CN116619099B
Application number: CN202310515292.1A
Authority: CN
Inventors: 赵增宝; 周孝军; 陈振华
Original assignee: Jiangsu Eastern Complete Equipment Manufacturing Group Co ltd
Current assignee: Jiangsu Eastern Complete Equipment Manufacturing Group Co ltd
Priority date: 2023-05-09
Filing date: 2023-05-09
Publication date: 2024-01-09
Anticipated expiration: 2043-05-09
Also published as: CN116619099A

Abstract

The application relates to a clamping mechanism of a numerical control boring machine, which belongs to the technical field of numerical control boring machines and comprises a clamping arm; the end part of the arm lever of the clamping arm is rotatably provided with a rotating rod, and both ends of the rotating rod are respectively provided with a fixed disc; a lining is fixedly connected on the fixed disc, and a lining ring is arranged in the lining; the inner peripheral surface of the lining is fixed with a plurality of first baffle plates; a plurality of second baffle plates are fixed on the peripheral surface of the lining ring; the first baffle and the second baffle are respectively provided with a second inclined plane which can be mutually abutted; the numerical control boring machine is provided with a support ring for transmitting the coupler and driving the lining ring to rotate; the fixed disc is fixedly connected with a compression spring, and the end part of the compression spring is fixedly connected with a pressure plate; the pressure plate can be abutted with the end face of the lining ring; one side of the fixed disc, which is far away from the compression spring, is fixedly connected with a first stator and an electromagnet; the inner peripheral surface of the lining ring is fixedly connected with a first moving plate which can be electrically contacted with the first fixed plate, the first moving plate is electrically connected with the storage battery, and the first electromagnet is electrically connected with the first fixed plate. The application has the effect of enhancing the connection strength of the mechanical arm and the coupling.

Description

Clamping mechanism of numerical control boring machine

Technical Field

The application relates to the field of numerical control boring machines, in particular to a clamping mechanism of a numerical control boring machine.

Background

At present, a numerical control boring machine is a machine tool for boring the existing prefabricated holes of a workpiece mainly by using a boring cutter, and can be used for machining high-precision holes or finishing finish machining of a plurality of holes by one-time positioning, and also can be used for drilling, milling, cutting and other machining. The replacement of the tool or bit on a numerical control boring machine is usually accomplished by a robotic arm.

The related art can refer to Chinese patent with the publication number of CN217702267U, which discloses a clamp tool changing mechanism of a numerical control boring and milling machine, comprising a clamping piece, a driving device and an action assembly; the action assembly comprises a connecting seat in the middle part and a sleeve arranged on the connecting seat; the sleeve is hollow, and a hydraulic rod is arranged on the sleeve; the driving device comprises a motor, a hydraulic cylinder and a lifter; the motor is arranged on the lifter; the lifter driving motor and the whole action assembly move up and down along the vertical direction; the output end of the driving motor is provided with a transmission shaft; the connecting seat is provided with a liquid inlet pipe and a liquid outlet pipe; the hydraulic cylinder drives the hydraulic rod to extend or retract along the direction of the sleeve; the clamping piece is arranged at the end part of the hydraulic rod; the hydraulic rod and the cutter disc are positioned on the same horizontal line; the hydraulic rod stretches out to be clamped with a cutter on the cutter disc or a cutter on the main shaft through the clamping piece.

In the above related art, there are the following drawbacks: before replacing the boring mill cutter, a coupler for connecting the cutter with the boring mill needs to be replaced. Because the coupler is generally designed into a cylinder shape, the mechanical claws on the mechanical arm are easy to slip when clamping the coupler, and the replacement efficiency of the coupler is affected.

Disclosure of Invention

In order to improve the connection strength of the mechanical arm and the coupler, the application provides a clamping mechanism of a numerical control boring machine.

The clamping mechanism of the numerical control boring machine adopts the following technical scheme:

a clamping mechanism of a numerical control boring machine comprises a clamping arm; the end part of the arm rod of the clamping arm is rotatably provided with a rotary table, one side of the rotary table, which is far away from the arm rod, is fixedly connected with a rotary rod, and both ends of the rotary rod are respectively provided with a fixed disc; a lining is fixedly connected to the fixed disc, and a lining ring is arranged in the lining; a plurality of first baffle plates are fixed on the inner peripheral surface of the bushing; a channel is formed between two adjacent baffle plates I, and a baffle block is fixedly connected to the bottom of each baffle plate I; the outer peripheral surface of the lining ring is fixedly provided with a plurality of second baffle plates which can be axially and slidably arranged in the channel along the lining; one side of the first baffle plate, which is far away from the stop block, and one side of the second baffle plate, which is close to the tool apron, are respectively provided with a second inclined surface which can be mutually abutted; the numerical control boring machine is provided with a support ring for transmitting the coupler and driving the lining ring to rotate; the compression spring is fixedly connected to the fixed disc, and the pressure plate is fixedly connected to the end part of the compression spring; the pressure plate can be abutted with the end face of the lining ring; one side of the fixed disc, which is close to the compression spring, is fixedly connected with a first stator and a first electromagnet; the inner peripheral surface of the lining ring is fixedly connected with a first moving plate which can be in electric contact with the first fixed plate, the first moving plate is electrically connected with a storage battery, and the first electromagnet is electrically connected with the first fixed plate.

Optionally, a plurality of pushing sheets II are fixed on the inner peripheral surface of the lining ring; a plurality of pushing sheets I which can be contacted with the pushing sheets II are uniformly distributed on the end surface of the supporting ring, and inclined planes III which can be mutually abutted are respectively formed on the contact surfaces of the pushing sheets I and the pushing sheets II; the opening direction of the second inclined plane is the same as that of the third inclined plane; the side wall of the stop block is provided with a chamfer which can be abutted against the inclined surface II of the second baffle plate.

Optionally, a driving motor is fixed in the connecting seat, and an output shaft of the driving motor is coaxially and fixedly connected with the turntable.

Optionally, the numerical control boring machine comprises a tool apron; the side wall of the tool apron is provided with a cavity for arranging the coupler; the supporting ring is axially arranged in the cavity in a sliding manner along the cavity; the circumference of the coupler is sleeved with a ring sleeve, and the supporting ring is sleeved on the circumference of the ring sleeve; a containing cavity for containing cleaning agent is formed in the annular wall; the outer wall of the ring sleeve is provided with a spraying area, and a plurality of liquid outlet holes communicated with the accommodating cavity are uniformly distributed in the spraying area.

Optionally, a plurality of baffle rings for blocking the liquid outlet holes are slidably arranged on the outer wall of the accommodating cavity; the outer peripheral surface of the baffle ring is fixedly provided with a first guide plate, and the inner wall of the accommodating cavity is provided with a first guide groove for accommodating the first guide plate; a first spring fixedly connected with the first guide piece is arranged in the first guide groove; a limiting rod is arranged in the accommodating cavity in a sliding manner along the radial direction of the accommodating cavity, and the limiting rod is used for preventing the baffle ring from moving; the inner peripheral surface of the accommodating cavity is provided with a first chute which is used for being in sliding connection with the limiting rod; the side wall of the limiting rod is fixedly provided with a second guide plate, a second guide groove capable of accommodating the second guide plate is formed in the inner wall of the first sliding groove, and a second spring fixedly connected with the second guide plate is arranged in the second guide groove.

Optionally, a limiting hole for the limiting rod to pass through is formed in the baffle ring, and a limiting piece is axially fixed in the limiting hole along the baffle ring; the side wall of the limiting rod is provided with a communication hole, the side wall, close to the first chute, of the communication hole is fixedly provided with a clamping piece, and the bottom surface of the limiting piece is provided with a clamping groove which can be spliced with the clamping piece.

Optionally, a second sliding groove is formed in the inner wall of the accommodating cavity along the axial direction of the sleeve, and a transmission block is arranged in the second sliding groove in a sliding manner; a third sliding groove is formed in the inner wall of the accommodating cavity along the radial direction of the annular sleeve, and a trigger block is arranged in the third sliding groove in a sliding manner; the transmission block and the trigger block, and the transmission block and the limit rod can be abutted; the contact surfaces of the transmission block and the trigger block are respectively provided with an inclined surface I, and the contact surfaces of the limiting rod and the transmission block are respectively provided with an inclined surface IV; the trigger block can be abutted with the outer wall of the coupler; a first reset spring is arranged in the third sliding groove and fixedly connected with the trigger block; a third guide plate is fixedly connected to the side wall of the transmission block, and a third guide groove which can be in sliding fit with the third guide plate is formed in the second sliding groove; and a second reset spring is arranged in the third guide groove and fixedly connected with the third guide plate.

Optionally, a cushion layer is arranged on the end face of the ring sleeve, and an electromagnet II is fixedly arranged on the end face of the cushion layer.

Optionally, the device further comprises a conveying assembly for placing the replaced coupling; the conveying assembly comprises a screw rod seat and a supporting seat arranged at the top of the screw rod seat in a sliding manner; the screw seat is fixedly provided with a screw motor and a transmission screw coaxially fixedly connected with the output end of the screw motor; the transmission screw rod is in threaded transmission fit with the supporting seat; a plurality of part bins are arranged on the supporting seat; the part bin is internally provided with a supporting ring in a sliding manner along the axial direction of the part bin, and a plurality of pushing sheets I are fixed on the end face of the supporting ring.

In summary, the present application includes at least one of the following beneficial technical effects:

1. after the bushing and the bushing ring slide relatively, the first moving plate and the first fixed plate are positioned on the same plane, so that the first electromagnet is electrified; the electromagnet I after being electrified can generate an adsorption effect on the coupler, so that the aim of clamping and transferring the coupler is fulfilled; the movement of the bushing is triggered by the stay ring; after the supporting ring drives the bushing to move, the bushing and the lining ring can be kept in different relative position relations according to the relative positions of the first baffle plate and the second baffle plate, so that the first moving plate and the first fixed plate realize two states of electric contact and separation, the purpose of triggering the switch of the first electromagnet through the movement of the supporting ring is achieved, and the coupling is adsorbed and transferred;

2. when the second baffle plate is positioned in the channel, the supporting ring can only push the lining ring to axially move along the lining; the relative position of the lining sleeve and the lining ring is changed, so that the first fixed plate and the first movable plate can be electrically contacted or separated. When the second baffle piece is separated from the channel, the first pushing piece can push the second pushing piece to rotate through the inclined plane II, so that the second baffle piece moves to a position limited by the first baffle piece and the stop block, the first fixed piece and the first movable piece keep an electric contact state, and the effect of stabilizing the working mode of the first electromagnet is achieved;

3. in order to reduce friction and heat generation during rotation of the coupling, lubricating oil is smeared on the periphery of the coupling in advance. Metal scraps generated in the coupler process can remain in the cavity and be mixed with lubricating oil; meanwhile, the lubricating oil also has the deterioration condition after long-time use, so that the lubricating oil in the cavity needs to be cleaned regularly. The cleaning agent used for cleaning lubricating oil in the cavity is arranged in the ring sleeve, so that the cavity is conveniently cleaned in the process of installing and dismantling the coupling.

Drawings

Fig. 1 is a schematic structural diagram of a numerical control boring machine and a clamping arm according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a numerical control boring machine according to an embodiment of the present application.

Fig. 3 is a cross-sectional view of a collar according to an embodiment of the present application.

Fig. 4 is a cross-sectional view of a collar according to an embodiment of the present application.

Fig. 5 is a schematic structural view of a baffle ring according to an embodiment of the present application.

Fig. 6 is an enlarged schematic view at a in fig. 4.

Fig. 7 is a schematic structural view of a clamping arm according to an embodiment of the present application.

Fig. 8 is a schematic structural view of a bushing according to an embodiment of the present application.

Fig. 9 is a schematic structural view of a liner ring according to an embodiment of the present application.

Fig. 10 is a cross-sectional view of a collar according to an embodiment of the present application.

Reference numerals: 1. a numerical control boring machine; 11. a base; 12. a vertical seat; 13. a tool apron; 14. a chamber; 15. a coupling; 16. a sliding sheet; 17. a second moving plate; 2. a clamping arm; 21. an arm lever; 22. a connecting seat; 23. a turntable; 24. a driving motor; 25. a rotating rod; 26. a rotating seat; 27. a fixed plate; 28. an electromagnet I; 3. a transport assembly; 31. a screw rod seat; 32. a support base; 33. a lead screw motor; 34. a transmission screw; 35. a guide groove; 36. a part bin; 4. a support ring; 41. pushing a first sheet; 42. an inclined plane III; 43. an electromagnet II; 44. a cushion layer; 45. a partition plate; 46. a communication hole; 47. a connecting sheet; 5. a ring sleeve; 51. a receiving chamber; 52. a liquid outlet hole; 53. a baffle ring; 54. a first guide piece; 55. a first spring; 56. chamfering; 57. a first liquid region; 58. a second liquid region; 6. a locking assembly; 61. a limit rod; 62. a first chute; 63. a relief groove; 64. a limiting hole; 65. a limiting piece; 66. a receiving hole; 67. a second guide groove; 68. a second guide piece; 69. a second spring; 7. a switch assembly; 71. a second chute; 72. a chute III; 73. a trigger block; 74. a transmission block; 75. a mounting plate; 76. a first moving plate; 77. a stator I; 8. a trigger assembly; 81. a reset assembly; 82. a compression spring; 83. a pressure plate; 84. a limiting ring; 85. an annular groove; 9. a bushing; 91. a first baffle; 92. a channel; 93. a stop block; 94. a second inclined plane; 95. a third guide plate; 96. a guide groove III; 10. a backing ring; 101. a second baffle plate; 102. pushing a second sheet; 103. a spray zone; 104. an inclined plane I; 105. a slope IV; 106. a first reset spring; 107. and a second reset spring.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-10.

The embodiment of the application discloses a clamping mechanism of a numerical control boring machine. The clamping mechanism of the numerical control boring machine 1 comprises a clamping arm 2 matched with the numerical control boring machine 1 and a conveying assembly 3.

The numerical control boring machine 1 comprises a base 11, a vertical seat 12 which can be arranged at the top of the base 11 in a sliding manner along the length direction of the base 11, and a tool apron 13 which can be arranged at one side of the vertical seat 12 in a sliding manner along the vertical direction. The base 11 and the stand 12 are used to change the spatial position of the seat 13. The side wall of the tool holder 13 is provided with a circular cavity 14 for connecting a tool. A shaft coupling 15 for connecting a cutter is arranged in the cavity 14, a supporting ring 4 capable of axially sliding along the cavity 14 is further arranged between the shaft coupling 15 and the inner wall of the cavity 14, and the supporting ring 4 is sleeved on the circumference side of the shaft coupling 15. The stay ring 4 is used to provide a placement environment for the coupling 15, and also to push the coupling 15 outside the chamber 14 for replacement of the coupling 15. A driver for pushing the support ring 4 to move along the axial direction of the cavity 14 is fixedly arranged in the cavity 14, and the driver can be an oil cylinder or a hydraulic cylinder; in this embodiment, the driver is a plurality of hydraulic cylinders, the hydraulic cylinders are embedded in the wall of the chamber 14, and the end parts of the hydraulic rods of the hydraulic cylinders are fixedly connected with the end surfaces of the supporting rings 4.

The circumference of the coupling 15 is sleeved with a ring sleeve 5, and the ring sleeve 5 separates the coupling 15 from the supporting ring 4. An annular accommodating cavity 51 is formed in the wall of the annular sleeve 5 along the circumferential direction of the annular sleeve, and is used for accommodating cleaning agents. When the coupler 15 is used, lubricating oil is generally smeared on the outer wall of the coupler 15 so as to reduce friction force born by the coupler 15 during rotation and reduce heat generation of the outer wall of the coupler 15; after the coupler 15 is used for a long time, metal scraps remained on the inner wall of the supporting ring 4 can be mixed with lubricating oil, and meanwhile, the lubricating oil is oxidized by itself to cause the reduction of the lubricating quality; these deteriorated lubricating oil may remain on the inner wall of the stay ring 4. The cleaning agent contained in the ring sleeve 5 is used for cleaning the lubricating oil in the supporting ring 4, and the cleaning agent can be alcohol. The inner wall of the chamber 14 is provided with a downward overflow groove, so that the cleaning agent in the support ring 4 can flow out of the overflow groove and be recovered after flowing out. The end surface of the supporting ring 4 can be provided with an annular slope surface, so that the cleaning agent can conveniently flow into the cavity 14 and flow out of the overflow groove.

Two circles of annular spraying areas 103 are symmetrically arranged on the outer wall of the annular sleeve 5, and a plurality of liquid outlet holes 52 communicated with the accommodating cavity 51 are uniformly distributed in the spraying areas 103 and are used for spraying cleaning agents onto the inner wall of the supporting ring 4 so as to clean lubricating oil. A plurality of baffle rings 53 are slidably arranged on the outer wall of the accommodating cavity 51 and used for blocking the liquid outlet holes 52, so that the cleaning agent is prevented from overflowing during the working process of the coupling 15. The retainer ring 53 is a semicircular ring body. The outer peripheral surface of the baffle ring 53 is fixed with a first guide plate 54 for providing guiding and supporting functions for the baffle ring 53, and the inner wall of the accommodating cavity 51 is provided with a first guide groove for accommodating the first guide plate 54; a first spring 55 fixedly connected with the first guide piece 54 is arranged in the first guide groove, and the first spring 55 is used for providing a moving elastic force for the baffle ring 53 so that the baffle ring 53 leaves a position overlapped with the spraying area 103 and moves towards the central position of the accommodating cavity 51 along the axial direction of the ring sleeve 5.

The inner wall of the accommodating cavity 51 is provided with a locking assembly 6 for providing limit for the baffle ring 53 and releasing the limit of the baffle ring 53. The locking assembly 6 includes a stop bar 61 that moves radially along the receiving cavity 51. The inner peripheral surface of the accommodating cavity 51 is provided with a first chute 62 for accommodating the limiting rod 61, the limiting rod 61 is slidably arranged in the first chute 62, and the outer wall of the accommodating cavity 51 is provided with a yielding groove 63 which can be spliced with the limiting rod 61. The limit rod 61 is arranged through the baffle ring 53; the baffle ring 53 is provided with a limiting hole 64 for the limiting rod 61 to pass through, and a limiting piece 65 is axially fixed in the limiting hole 64 along the baffle ring 53; the side wall of the limiting rod 61 is provided with a square communication hole 46, and when the end part of the limiting rod 61 passes through the limiting hole 64, the limiting piece 65 is positioned in the communication hole 46. The side wall of the communication hole 46, which is close to the first chute 62, is fixedly provided with a clamping piece, and the bottom surface of the limiting piece 65 is provided with a clamping groove which can be spliced with the clamping piece.

When the coupling 15 works normally, the limiting rod 61 is acted by elastic force towards the outer side of the baffle ring 53, at the moment, the limiting rod 61 is pressed, the inner wall of the communication hole 46, which is close to one side of the chute 62, is abutted against the bottom wall of the limiting piece 65, and meanwhile, the clamping piece and the clamping groove are in a plugging state. The end of the limit rod 61 is positioned in the abdication groove 63; at this time, the stop ring 53 is in a limited state due to the limiting action of the limiting rod 61; the baffle ring 53 is positioned to coincide with the shower area 103 so as to prevent the detergent contained in the containing chamber 51 from overflowing. When the external force applied to the stop lever 61 is released, the abutment action of the stop lever 61 to the stop piece 65 is weakened, and the engaging piece is separated from the engaging groove, so that the stop of the stop ring 53 is released. The baffle ring 53 approaches the center of the accommodating cavity 51 under the action of the first spring 55, and the moved baffle ring 53 is separated from the spraying area 103, so that the cleaning agent overflows from the liquid outlet hole 52.

The side wall of the limiting rod 61 is fixed with a second guide plate 68, and the inner wall of the first chute 62 is provided with a second guide groove 67 which can accommodate the second guide plate 68 and is used for providing guiding and supporting functions for the second guide plate 68. A second spring 69 fixedly connected with the second guide piece 68 is arranged in the second guide groove 67; in this embodiment, the second spring 69 is an extension spring, and is used to provide the second guide piece 68 and the limiting rod 61 with an elastic force that moves to a side far away from the limiting piece 65, so that the clamping piece is separated from the clamping groove.

The inner wall of the accommodating cavity 51 is axially provided with a second chute 71 along the annular sleeve 5, and a transmission block 74 is arranged in the second chute 71 in a sliding manner; the inner wall of the accommodating cavity 51 is radially provided with a third chute 72 along the annular sleeve 5, and a trigger block 73 is arranged in the third chute 72 in a sliding manner. The transmission block 74 and the trigger block 73, and the transmission block 74 and the limit rod 61 can all be kept in an abutting state; meanwhile, the contact surfaces of the transmission block 74 and the trigger block 73 are respectively provided with a first inclined surface 104, and when the trigger block 73 moves towards the center of the annular sleeve 5 along the radial direction of the annular sleeve 5, the transmission block 74 can be pushed to move towards the side close to the limiting rod 61 through the first inclined surface 104. The contact surfaces of the limiting rod 61 and the transmission block 74 are respectively provided with a bevel surface IV 105, and when the transmission block 74 moves to the side far away from the trigger block 73, the limiting rod 61 can be pushed by the bevel surface IV 105 to move to the direction far away from the center of the loop 5.

When the ring sleeve 5 is sleeved on the periphery of the coupler 15, the trigger block 73 is retracted into the third chute 72 under the abutting action of the outer wall of the coupler 15; when the coupling 15 is pulled out of the collar 5, the trigger block 73 losing the pressing action extends out of the third chute 72, and the transmission block 74 losing the pressing action moves with the stop lever 61, so that the stop lever 61 moving toward the center of the collar 5 can separate the clamping piece from the clamping groove, and the stop of the stop ring 53 is released.

The third chute 72 is internally provided with a first return spring 106, and the first return spring 106 is fixedly connected with the trigger block 73 and is used for pushing the trigger block 73 to return to a direction close to the center of the ring sleeve 5. A third guide plate 95 for providing a guide function for the transmission block 74 is fixedly connected to the side wall of the transmission block 74, and a third guide groove 96 which can be in sliding fit with the third guide plate 95 is formed in the second slide groove 71; a second return spring 107 is arranged in the third guide groove 96, and the second return spring 107 is fixedly connected with the third guide plate 95 and is used for pushing the third guide plate 95 and the transmission block 74 to return to the side close to the trigger block 73.

The arm bar 21 of the clamping arm 2 is extended to the front of the tool holder 13 during operation, so that the coupling 15 in the tool holder 13 is replaced. The end of the arm 21 is hinged with a connecting seat 22, the arm 21 and the connecting seat 22 can be kept in a relatively static state by a motor or other control units, and in this embodiment, the arm 21 can be fixedly connected with the connecting seat 22. A turntable 23 is rotatably arranged on the side wall of the connecting seat 22, a driving motor 24 is fixed in the connecting seat 22, and an output shaft of the driving motor 24 is coaxially and fixedly connected with the turntable 23 so as to drive the turntable 23 to rotate; the drive motor 24 may be activated and deactivated manually or by an electrical signal. The rotating plate 23 is fixedly connected with a rotating rod 25 at one side far away from the connecting seat 22, two ends of the rotating rod 25 are respectively hinged with a rotating seat 26, and the rotating seat 26 can keep a relatively static state with the rotating rod 25 through a motor or other driving units. The end of the rotating seat 26 far away from the rotating rod 25 is fixedly connected with a fixed disc 27. The fixing disc 27 is used for fixing the first electromagnet 28, and the first electromagnet 28 is used for replacing the coupling 15 or the ring sleeve 5 in a mode of adsorbing the coupling 15 or the ring sleeve 5.

Since the inner wall of the supporting ring 4 can be cleaned only by disassembling the coupling 15 and then disassembling the ring sleeve 5, a trigger assembly 8 for triggering the switch of the electromagnet one 28 is arranged between the supporting ring 4 and the fixed disc 27. The trigger assembly 8 includes a bushing 9 fixedly coupled to a fixed disk 27 and a liner ring 10 disposed within the bushing 9. The inner peripheral surface of the lining 9 is uniformly distributed with a plurality of baffle plates 91 along the circumferential direction. The gap between two adjacent baffle plates 91 is a channel 92, and a stop block 93 is fixedly connected to the edge position of the bottom of the baffle plate 91.

The peripheral surface of the lining ring 10 is uniformly distributed with a plurality of second baffle plates 101 along the circumferential direction, and the second baffle plates 101 can be axially and slidably arranged in the channel 92 along the lining 9. The edge of the first baffle plate 91 far away from the stop block 93 is provided with a second inclined plane 94, and one side of the second baffle plate 101 close to the tool apron 13 is also provided with a second inclined plane 94 which can be contacted with the first baffle plate 91. When the second blocking piece 101 slides away from the slot 92 toward the side away from the tool holder 13, the second blocking piece 101 rotates toward the direction approaching the stop 93 due to the presence of the inclined surface 94. The second rotated shutter 101 stops rotating at a position contacting the stopper 93. After the second blocking piece 101 moves, the liner ring 10 moves a distance away from the tool holder 13 relative to the liner 9.

The inner peripheral surface of the lining ring 10 is uniformly distributed with a plurality of pushing pieces II 102 along the circumferential direction of the lining ring; the number of the first blocking piece 91 and the second blocking piece 101 may be equal, and the number of the second pushing piece 102 may be twice as large as that of the first blocking piece 91. The end face of the supporting ring 4 is uniformly provided with a plurality of first pushing sheets 41, and the number of the first pushing sheets 41 can be equal to that of the first blocking sheets 91. After the support ring 4 moves to the outer side of the tool apron 13, the first pushing piece 41 can be contacted with the second pushing piece 102, and the contact surfaces of the first pushing piece 41 and the second pushing piece 102 are respectively provided with a third inclined surface 42 which can be mutually abutted. The first push piece 41 and the second push piece 102 can be separated when the second baffle piece 101 moves to the stop block 93 by setting the stroke of the hydraulic rod in the hydraulic cylinder.

After the first pushing piece 41 contacts with the second pushing piece 102, the second blocking piece 101 is located in the channel 92, so that the liner ring 10 can only move along the axial direction of the liner 9. After the second baffle 101 leaves the channel 92, it will move to the side close to the stop 93 due to the pressing action of the second inclined surface 94; meanwhile, the first pushing piece 41 can push the second pushing piece 102 to rotate through the third inclined surface 42; the second inclined surface 94 and the third inclined surface 42 keep the same opening direction, so that the second push plate 102 and the second baffle plate 101 keep the same steering after being pressed. Eventually, the liner ring 10 rotates after moving a certain distance along the axial direction of the liner 9, and the second baffle plate 101 stays in a position contacting the stop block 93.

In order to reset the liner ring 10 to the side close to the tool holder 13, a reset assembly 81 is provided on the liner 9 and the fixing plate 27. The reset assembly 81 comprises a compression spring 82 fixedly connected to the fixed disk 27 and an annular pressure plate 83 fixedly connected with the compression spring 82; the pressure plate 83 abuts against the end surface of the liner ring 10 by the compression spring 82. The pressure plate 83 is circular and the diameter of the pressure plate 83 is comparable to the inner diameter of the bushing 9, facilitating axial movement of the pressure plate 83 only along the bushing 9.

In order to prevent the liner ring 10 from being separated from the liner 9 under the action of the compression spring 82, a limiting ring 84 is fixedly connected to the outer peripheral surface of the liner ring 10, and an annular groove 85 capable of being matched with the limiting ring 84 is formed in the inner peripheral surface of the liner 9. When the liner ring 10 moves, the limiting ring 84 is slidably disposed in the annular groove 85 relative to the liner 9, so as to limit the moving distance of the liner ring 10. The thickness of the limit ring 84 is equivalent to the depth of the annular groove 85, so that the inclination of the liner ring 10 during rotation or movement in the liner 9 is reduced.

A switch component 7 for controlling the starting and stopping of the electromagnet I28 is arranged between the lining 9 and the lining ring 10. The switch assembly 7 includes a mounting plate 75 secured to the side of the mounting plate 27 adjacent the compression spring 82. An annular first moving plate 76 is fixedly connected to the inner peripheral surface of the backing ring 10, an annular first fixed plate 77 is fixedly connected to the outer peripheral surface of the mounting plate 75, and when the mounting plate 75 moves to the position that the first moving plate 76 and the first fixed plate 77 are located on the same plane, the inner peripheral surface of the first moving plate 76 can be in electrical contact with the outer peripheral surface of the first fixed plate 77. The battery is embedded in the fixed disk 27, and the first moving plate 76 is electrically connected with the battery. The electromagnet one 28 is fixed on the end surface of the mounting plate 75, and the electromagnet one 28 is electrically connected with the stator one 77.

The side wall of the stop block 93 is provided with a chamfer 56 which can be abutted against the inclined surface II 94 of the second baffle plate 101. When the second blocking piece 101 is stopped at the position contacting the stop block 93, the first moving piece 76 and the first fixed piece 77 are positioned on the same plane, the first electromagnet 28 is electrically connected with the storage battery, and the first electromagnet 28 after being electrified can exert an adsorption effect on the coupling 15 or the ring sleeve 5. When the stay ring 4 moves again, the first pushing piece 41 contacts with the second pushing piece 102 and enables the lining ring 10 to move, and the second blocking piece 101 rotates to pass through the stop block 93 under the action of the chamfer 56 of the stop block 93; the second baffle plate 101 which loses the limit function of the stop block 93 moves to the side close to the tool apron 13 under the action of the compression spring 82 and returns to the channel 92; at the same time, the lining ring 10 moves towards the side close to the tool holder 13 relative to the lining 9, so that the first moving plate 76 is separated from the first fixed plate 77, the first electromagnet 28 is powered off, and the adsorption effect on the coupler 15 or the ring sleeve 5 is lost.

In order to prevent the electromagnet one 28 from adsorbing the coupling 15, the ring sleeve 5 moves along with the coupling 15, and the annular electromagnet two 43 is arranged on the end surface of the ring sleeve 5 and used for adsorbing with the electromagnet one 28. The electromagnet II 43 and the end face of the ring sleeve 5 are provided with a nonmagnetic cushion layer 44, and the cushion layer 44 can be made of resin. Two partition plates 45 are radially and fixedly arranged in the accommodating cavity 51 along the accommodating cavity 51, the accommodating cavity 51 is divided into a first liquid area 57 on two sides of the partition plates 45 and a second liquid area 58 between the two partition plates 45 by the two partition plates 45, and cleaning agent is positioned in the first liquid area 57; the second liquid area 58 is a closed area, the second liquid area 58 is used for storing a contrast solution, the density of the contrast solution is small relative to that of the cleaning agent, and the contrast solution can be methanol.

The partition board 45 is provided with a connecting hole 66 communicated with the first liquid area 57 and the second liquid area 58, a connecting sheet 47 is arranged in the connecting hole 66 in a sliding mode, and an anti-seepage coating is smeared on the outer peripheral surface of the connecting sheet 47 to prevent liquid in the first liquid area 57 and liquid in the second liquid area 58 from leaking mutually. Slide sheets 16 are respectively fixed on two sides of the connecting sheet 47, and a sliding groove which can be connected with the slide sheets 16 is formed in the inner wall of the connecting hole 66; the inner wall of the sliding groove, which is close to the first liquid area 57, is fixedly connected with a second stator, and the side wall of the sliding sheet 16 is fixedly connected with a second moving sheet 17 which can be in electric contact with the second stator; the second moving plate 17 is electrically connected with the second electromagnet 43, and the second fixed plate is electrically connected with the storage battery. The storage battery is buried in the wall of the accommodating cavity 51, and the lead is buried in the wall of the accommodating cavity 51 and the partition board 45.

The density of the cleaning agent in the first liquid area 57 is higher than that of the contrast liquid in the second liquid area 58, so that the pressure difference occurs on two sides of the partition board 45 with the same height; the pressure is directed into the second liquid zone 58. The length of the sliding sheet 16 is longer than the length of the connecting hole 66; when the first liquid area 57 is full of cleaning agent, the slide 16 faces the second liquid area 58 and is in a static state. After the cleaning agent is sprayed, the pressure applied to the sliding vane 16 in the first liquid area 57 is reduced, the sliding vane 16 moves towards the direction approaching the first liquid area 57, so that the second fixed sheet and the second movable sheet 17 are in electrical contact, and the second electromagnet 43 restores magnetism. The series resistance between the electromagnet II 43 and the storage battery can ensure that the electromagnet II 43 keeps weaker magnetism after being electrified, and the possibility that the electromagnet II 43 cannot move due to the attraction of the supporting ring 4 is reduced.

The conveying assembly 3 comprises a screw seat 31 and a supporting seat 32 arranged at the top of the screw seat 31 in a sliding manner. The screw base 31 is fixedly provided with a screw motor 33 and a transmission screw 34 coaxially and fixedly connected with the output end of the screw motor 33. The transmission screw 34 penetrates through the threaded hole of the supporting seat 32 and drives the supporting seat 32 to move through threaded transmission fit with the supporting seat 32. The top surface of the screw seat 31 is provided with a guide groove 35, and the supporting seat 32 is arranged in the guide groove 35 in a sliding manner along the length direction of the screw seat 31. The support 32 is provided with a plurality of component bins 36 along its length. The part bin 36 is internally provided with a supporting ring 4 in a sliding way along the axial direction of the part bin, and a plurality of pushing sheets 41 are uniformly distributed on the end surface of the supporting ring 4 along the circumferential direction of the part bin; the hydraulic cylinder is arranged in the part bin 36, and a hydraulic rod of the hydraulic cylinder is fixedly connected with the end face of the supporting ring 4 so as to push the supporting ring 4 to move. The shaft coupling 15 or the ring sleeve 5 replaced by the tool apron 13 and the shaft coupling 15 to be replaced on the tool apron 13 are placed in the part bin 36, the supporting ring 4 in the part bin 36 is pressed against the pushing piece two 102 on the lining ring 10 through the pushing piece one 41, and the switch component 7 of the electromagnet one 28 is triggered, so that the aim of replacing the shaft coupling 15 is fulfilled. Magnets can be arranged on the side wall of the circumference of the supporting ring 4, and after the first electromagnet 28 is closed, the detached coupler 15 or the ring sleeve 5 is more easily adsorbed into the supporting ring 4.

The implementation principle of the clamping mechanism of the numerical control boring machine 1 in the embodiment of the application is as follows:

s1, when the coupler 15 is replaced, the arm rod 21 is rotated to the position where the fixed disc 27 and the cavity 14 of the tool apron 13 are positioned, the first electromagnet 28 is triggered to start by driving the supporting ring 4 in the cavity 14 to move, and the first electromagnet 28 adsorbs and takes out the coupler 15. At this time, the second electromagnet 43 is powered off and the first electromagnet 28 only attracts the coupling 15 because the cleaning agent in the ring 5 is in a full state. The control stay ring 4 returns to the chamber 14; the ring sleeve 5 is separated from the coupling 15, so that the cleaning agent in the ring sleeve 5 overflows and flows into the supporting ring 4 to clean the lubricating oil remained on the inner peripheral surface of the supporting ring 4.

S2, rotating the arm rod 21 to enable the coupler 15 adsorbed on the arm rod 21 to be aligned with the part bin 36, controlling the support ring 4 in the part bin 36 to move and triggering the electromagnet I28 to be powered off. The detached coupler 15 enters the supporting ring 4 of the part bin 36; the control support ring 4 is retracted into the part bin 36, and the recovery of the coupler 15 is completed. Meanwhile, the fixing piece above the arm rod 21 is aligned with the cavity 14 of the tool apron 13; after the cleaning agent flows out of a certain volume, the electromagnet II 43 is triggered to be electrified, and the supporting ring 4 in the cavity 14 is controlled to move, so that the electromagnet I28 adsorbs the ring sleeve 5.

S3, moving the supporting seat 32 to align a part bin 36 for placing a new coupler 15 with the fixed disc 27 of the arm rod 21; when a new coupler 15 is placed in the part bin 36, the annular sleeve 5 is sleeved on the periphery of the coupler 15, so that the coupler 15 and the annular sleeve 5 can be installed in the tool apron 13. S2 is repeated to allow the fixing plate 27 below the arm 21 to adsorb a new coupler 15 and collar 5.

S4, moving the supporting seat 32 to enable an empty part bin 36 to be aligned with the fixed disc 27 of the arm rod 21, rotating the arm rod 21 again, repeating S2, placing the replaced arm rod 21 in the empty part bin 36, and simultaneously installing a new coupler 15 in the supporting ring 4 of the tool apron 13.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The utility model provides a fixture of numerical control boring machine which characterized in that: comprises a clamping arm (2); a rotary table (23) is rotatably arranged at the end part of an arm rod (21) of the clamping arm (2), a rotary rod (25) is fixedly connected to one side, away from the arm rod (21), of the rotary table (23), and fixed discs (27) are respectively arranged at two ends of the rotary rod (25); a lining (9) is fixedly connected to the fixed disc (27), and a lining ring (10) is arranged in the lining (9); a plurality of first baffle plates (91) are fixed on the inner peripheral surface of the bushing (9); a channel (92) is formed between two adjacent first baffle plates (91), and a stop block (93) is fixedly connected to the bottom of each first baffle plate (91); a plurality of second baffle plates (101) are fixed on the peripheral surface of the lining ring (10), and the second baffle plates (101) can be axially and slidably arranged in the channel (92) along the lining (9); the first baffle (91) and the second baffle (101) are respectively provided with a second inclined plane (94) which can be mutually abutted; a support ring (4) for transmitting the coupler (15) and driving the lining ring (10) to rotate is arranged on the numerical control boring machine (1); a compression spring (82) is fixedly connected to the fixed disc (27), and a pressure plate (83) is fixedly connected to the end part of the compression spring (82); the pressure plate (83) is abutted with the end face of the lining ring (10); one side of the fixed disc (27) close to the compression spring (82) is fixedly connected with a stator I (77) and an electromagnet I (28); the inner peripheral surface of the lining ring (10) is fixedly connected with a first moving plate (76) which can be electrically contacted with the first stator (77), the first moving plate (76) is electrically connected with a storage battery, and the first electromagnet (28) is electrically connected with the first stator (77).

2. The clamping mechanism of a numerical control boring machine according to claim 1, wherein: a plurality of pushing pieces II (102) are fixed on the inner peripheral surface of the lining ring (10); a plurality of first pushing pieces (41) which can be contacted with the second pushing pieces (102) are uniformly distributed on the end surface of the supporting ring (4), and inclined planes (42) which can be mutually abutted are respectively formed on the contact surfaces of the first pushing pieces (41) and the second pushing pieces (102); the opening direction of the second inclined plane (94) is the same as that of the third inclined plane (42); and a chamfer (56) which can be abutted against the inclined plane II (94) of the baffle plate II (101) is formed on the side wall of the baffle block (93).

3. The clamping mechanism of a numerical control boring machine according to claim 1, wherein: the arm rod (21) is fixedly provided with a driving motor (24), and an output shaft of the driving motor (24) is fixedly connected with the turntable (23) coaxially.

4. The clamping mechanism of a numerical control boring machine according to claim 1, wherein: the numerical control boring machine (1) comprises a cutter holder (13); the side wall of the tool apron (13) is provided with a cavity (14) for arranging the coupler (15); the supporting ring (4) is axially arranged in the cavity (14) in a sliding way along the cavity (14); the circumference of the coupler (15) is sleeved with a ring sleeve (5), and the supporting ring (4) is sleeved on the circumference of the ring sleeve (5); a containing cavity (51) for containing cleaning agent is formed in the wall of the ring sleeve (5); the outer wall of the ring sleeve (5) is provided with a spraying area (103), and a plurality of liquid outlet holes (52) communicated with the accommodating cavity (51) are uniformly distributed in the spraying area (103).

5. The clamping mechanism of the numerical control boring machine according to claim 4, wherein: a plurality of baffle rings (53) for blocking the liquid outlet holes (52) are slidably arranged on the outer wall of the accommodating cavity (51); the outer peripheral surface of the baffle ring (53) is fixedly provided with a first guide plate (54), and the inner wall of the accommodating cavity (51) is provided with a first guide groove for accommodating the first guide plate (54); a first spring (55) fixedly connected with the first guide piece (54) is arranged in the first guide groove; a limiting rod (61) is arranged in the accommodating cavity (51) in a sliding manner along the radial direction of the accommodating cavity, and the limiting rod (61) is used for preventing the baffle ring (53) from moving; a first chute (62) which is used for being connected with the limiting rod (61) in a sliding way is formed in the inner peripheral surface of the accommodating cavity (51); the side wall of the limiting rod (61) is fixedly provided with a second guide plate (68), the inner wall of the first sliding groove (62) is provided with a second guide groove (67) capable of accommodating the second guide plate (68), and a second spring (69) fixedly connected with the second guide plate (68) is arranged in the second guide groove (67).

6. The clamping mechanism of the numerical control boring machine according to claim 5, wherein: a limiting hole (64) for the limiting rod (61) to pass through is formed in the baffle ring (53), and a limiting sheet (65) is axially fixed in the limiting hole (64) along the baffle ring (53); the side wall of the limiting rod (61) is provided with a communication hole (46), a clamping piece is fixed on the side wall, close to the first sliding groove (62), of the communication hole (46), and a clamping groove capable of being spliced with the clamping piece is formed in the bottom surface of the limiting piece (65).

7. The clamping mechanism of the numerical control boring machine according to claim 5, wherein: a second sliding groove (71) is axially formed in the inner wall of the accommodating cavity (51) along the annular sleeve (5), and a transmission block (74) is slidably arranged in the second sliding groove (71); a third sliding groove (72) is formed in the inner wall of the accommodating cavity (51) along the radial direction of the annular sleeve (5), and a trigger block (73) is arranged in the third sliding groove (72) in a sliding manner; the transmission block (74) and the trigger block (73), and the transmission block (74) and the limit rod (61) can be abutted; the contact surfaces of the transmission block (74) and the trigger block (73) are respectively provided with an inclined plane I (104), and the contact surfaces of the limiting rod (61) and the transmission block (74) are respectively provided with an inclined plane IV (105); the trigger block (73) can be abutted with the outer wall of the coupler (15); a first reset spring (106) is arranged in the third sliding chute (72), and the first reset spring (106) is fixedly connected with the trigger block (73); a third guide plate (95) is fixedly connected to the side wall of the transmission block (74), and a third guide groove (96) which can be in sliding fit with the third guide plate (95) is formed in the second slide groove (71); and a second return spring (107) is arranged in the third guide groove (96), and the second return spring (107) is fixedly connected with the third guide plate (95).

8. The clamping mechanism of the numerical control boring machine according to claim 4, wherein: the end face of the ring sleeve (5) is provided with a cushion layer (44), and the end face of the cushion layer (44) is fixedly provided with an electromagnet II (43).

9. The clamping mechanism of a numerical control boring machine according to claim 1, wherein: the device also comprises a conveying assembly (3) for placing the replaced coupling (15); the conveying assembly (3) comprises a screw rod seat (31) and a supporting seat (32) arranged at the top of the screw rod seat (31) in a sliding manner; a screw motor (33) and a transmission screw (34) coaxially and fixedly connected with the output end of the screw motor (33) are fixedly arranged on the screw seat (31); the transmission screw rod (34) is in threaded transmission fit with the supporting seat (32); a plurality of part bins (36) are arranged on the supporting seat (32); the part bin (36) is internally provided with a supporting ring (4) in a sliding manner along the axial direction of the part bin, and a plurality of pushing sheets I (41) are fixed on the end face of the supporting ring (4).