CN111659932A - Thin-wall pipe fitting drilling clamp with internal floating support - Google Patents
Thin-wall pipe fitting drilling clamp with internal floating support Download PDFInfo
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- CN111659932A CN111659932A CN202010548891.XA CN202010548891A CN111659932A CN 111659932 A CN111659932 A CN 111659932A CN 202010548891 A CN202010548891 A CN 202010548891A CN 111659932 A CN111659932 A CN 111659932A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B49/00—Measuring or gauging equipment on boring machines for positioning or guiding the drill; Devices for indicating failure of drills during boring; Centering devices for holes to be bored
- B23B49/02—Boring templates or bushings
Abstract
The invention belongs to the technical field of drilling machine fixtures, and particularly relates to a thin-wall pipe drilling fixture with an internal floating support, which comprises an upper clamping piece, a lower clamping piece, a guide piece, a pneumatic telescopic part, an elastic piece, a guide sliding part, a floating block, an annular fixing plate and an internal support part, wherein the upper clamping piece is fixed on the upper surface of the lower clamping piece; according to the invention, the inner wall of the thin-wall pipe fitting is supported by the internal supporting component, and then the pneumatic telescopic component contracts, so that the upper clamping piece and the lower clamping piece are driven to clamp the outer cylindrical surface of the thin-wall pipe fitting; and the floating block connected through the elastic piece drives the inner supporting part to freely move in the vertical direction, so that the clamping force of the outer V-shaped surface and the clamping force of the inner supporting part cannot interfere, the thin-wall pipe fitting can be tightly attached to the V-shaped surface, and the drilling precision of the thin-wall pipe fitting is guaranteed.
Description
Technical Field
The invention belongs to the technical field of drilling machine fixtures, and particularly relates to a thin-wall pipe fitting drilling fixture with an internal floating support.
Background
Drilling on the pipe fitting is not easy to control, and then drilling on the pipe fitting can be finished after the pipe fitting is clamped by a special clamp. The existing clamping fixture for the pipe fitting is the same as a clamping cylinder, and a three-jaw chuck is used, so that the universal clamping fixture is used in the processing process of the pipe fitting or the cylindrical blank.
However, if the three-jaw chuck is used for clamping the thin-wall pipe, the strength of the thin-wall pipe is low, so that the pipe is easy to deform under the action of clamping fixing pressure and cutting stress of a drill bit during cutting, and the self-centering precision of the three-jaw chuck is greatly reduced due to the deformation of the thin-wall pipe, so that the final machining quality of the thin-wall pipe is poor, and even the thin-wall part is scrapped in the clamping process.
Disclosure of Invention
In order to make up the defects of the prior art, the invention provides a thin-wall pipe drilling clamp with an internal floating support. The invention is mainly used for solving the problem that the drilling precision is reduced because the thin-wall pipe is extruded and deformed due to low strength of the thin-wall pipe in the clamping process.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention provides a thin-wall pipe drilling fixture with an internal floating support, which comprises an upper clamping piece, a lower clamping piece, a guide piece, a pneumatic telescopic part, an elastic piece, a guide sliding part, a floating block, an annular fixing plate and an internal support part, wherein the upper clamping piece is fixed on the upper clamping piece; the lower end of the upper clamping piece is provided with a V-shaped surface; the upper end of the lower clamping piece is provided with a V-shaped surface; stepped holes are formed in the middle of the V-shaped surface of the upper clamping piece and the middle of the V-shaped surface of the lower clamping piece; drill sleeves are arranged in the stepped holes; the upper clamping piece and the lower clamping piece are connected through the guide piece and the pneumatic telescopic part; the floating block is arranged between the upper clamping piece and the lower clamping piece; the upper surface of the floating block is connected with the upper clamping piece through the elastic piece, and the lower surface of the floating block is connected with the lower clamping piece through the elastic piece; the upper end of the side surface of the floating block close to the drill bushing and the upper clamping piece and the lower end of the side surface of the floating block close to the drill bushing and the lower clamping piece are connected through the guide sliding component; the interior of the floating block is of a hollow structure; the end face of the outer side of the floating block is provided with a mounting hole; the mounting hole is connected with the annular fixing plate through threads; the annular fixing plate is fixedly connected with the internal supporting component; the inner support member extends between the V-shaped surface of the upper clamp and the V-shaped surface of the lower clamp; the internal support component is used for supporting the inner wall of the thin-wall pipe fitting.
When the device works, after the thin-wall pipe is inserted between the V-shaped surface of the upper clamping piece and the V-shaped surface of the lower clamping piece, the inner wall of the thin-wall pipe is supported through the inner supporting part, so that the thin-wall pipe has certain extrusion deformation resistance, then the pneumatic telescopic part contracts to drive the upper clamping piece and the lower clamping piece to approach each other, and finally the outer cylindrical surface of the thin-wall pipe is clamped through the V-shaped surface on the upper clamping piece and the V-shaped surface on the lower clamping piece; and the slider that the in-process is connected through the elastic component drives inside support component and freely removes in vertical direction, and then guarantees that the clamping force of outside V profile and inside support component can not take place to interfere, and then has guaranteed that thin-walled tube can be inseparable laminate with the V profile, and then has guaranteed the precision of V profile self-centering, and then guarantees the precision of thin-walled tube final drilling.
Preferably, the internal supporting component comprises a supporting shaft, a sliding sleeve, a supporting rod, an arc-shaped elastic plate, a transmission shaft, a flexible transmission part, a first spring, a mounting plate, a brake motor and a spherical screw; the outer side of the annular fixing plate is fixedly connected with the mounting plate; the supporting shaft penetrates through the floating block; the supporting shaft is connected with the mounting plate through the first spring and the spherical screw; one end of the first spring is fixedly connected to the end face of the supporting shaft; the other end of the first spring is abutted against the mounting plate; tapered holes are uniformly arranged on the mounting plate at intervals along the circumferential direction; the spherical screw penetrates through the conical hole and is connected with the end face of the supporting shaft; the spherical surface of the spherical screw is in contact with the conical surface of the conical hole; the middle part of the supporting shaft is provided with a through hole; the through hole is rotationally connected with the transmission shaft; one end of the transmission shaft is connected with a rotating shaft of the brake motor through the flexible transmission part; the brake motor is fixedly connected to the mounting plate; two groups of forward thread sections and reverse thread sections are arranged on the cylindrical surface at the other end of the transmission shaft at intervals; the forward thread section and the reverse thread section are respectively and correspondingly provided with the sliding sleeves; the sliding sleeve is provided with hinge seats at even intervals along the circumferential direction; rectangular through grooves are uniformly arranged on the supporting shaft at intervals in the circumferential direction; the hinge seat slides in the rectangular through groove; the two hinge seats in the corresponding group are respectively hinged with one support rod; the free ends of the two supporting rods are hinged to the middle of the lower surface of the arc-shaped elastic plate; the arc-shaped elastic plate is arc-shaped in a free state.
When the device works, after the thin-wall pipe is inserted between the V-shaped surface of the upper clamping piece and the V-shaped surface of the lower clamping piece, the brake motor is controlled to rotate, the transmission shaft is driven to rotate through the flexible transmission part, the two sliding sleeves in the same group are driven to approach each other due to the forward thread section and the reverse thread section arranged on the transmission shaft, the included angle between the two supporting rods is reduced, the hinged point between the two supporting rods extends outwards, the arc-shaped elastic plate is unfolded outwards, the unfolded arc-shaped elastic plate is gradually contacted with the inner wall of the thin-wall pipe, the arc-shaped elastic part after being contacted with the inner wall of the thin-wall pipe is further bent and deformed, the inner wall of the thin-wall pipe is finally completely attached, then the brake motor is powered off and locked, and the inner supporting part supports the inner wall of the thin-wall pipe, further, the thin-walled pipe fitting is guaranteed not to deform under the extrusion force of the upper clamping piece and the lower clamping piece in the subsequent process, and the clamping precision of the thin-walled pipe fitting is further guaranteed; meanwhile, the supporting shaft and the mounting plate are connected through a spring and a spherical screw, and the rotating shaft of the transmission shaft and the motor is connected through a flexible transmission part, so that the supporting shaft can swing in any direction relative to the mounting plate, the clamping force of the external V-shaped surface and the clamping force of the internal supporting part cannot interfere, the thin-wall pipe fitting can be tightly attached to the V-shaped surface, the automatic centering precision of the V-shaped surface is guaranteed, and the final drilling precision of the thin-wall pipe fitting is guaranteed.
Preferably, the flexible transmission member is in the shape of a hexagonal prism; the flexible transmission part is made of high-strength rubber; the end part of the transmission shaft and the end part of a rotating shaft of the brake motor are both provided with hexagonal prism grooves; one end of the flexible transmission piece is inserted into the hexagonal prism groove at the end part of the transmission shaft; the other end of the flexible transmission part is inserted into the hexagonal prism groove at the end part of the rotating shaft of the brake motor.
The flexible transmission part is in a hexagonal prism shape, so that the flexible transmission part can well transmit torque, the power of the brake motor is transmitted to the transmission shaft, and the operation of the device is guaranteed; the material of flexible drive spare selects the rubber material of high strength simultaneously, and then makes flexible drive spare can also realize through the crooked realization back shaft of self and swing for the mounting panel under guaranteeing to have stable transmission ability, and then guarantees that the clamping-force of the holding power of outside V profile and inside supporting component can not take place to interfere, and then guarantees that thin-walled tube can be inseparable laminate with the V profile, and then guarantees the precision of V profile self-centering.
Preferably, a sliding baffle ring is arranged in the floating block; the outer ring of the sliding baffle ring is connected with the inner wall of the floating block in a sliding manner; threaded pipes are uniformly arranged on the surface of one side, close to the annular fixing plate, of the sliding baffle ring at intervals along the circumferential direction; threads are arranged in the threaded pipe; one end of a threaded rod is connected into the suspended end of the threaded pipe through threads; the other end of the threaded rod penetrates through the mounting plate; the end part of the other end of the threaded rod is fixedly connected with a gear; a gear ring is arranged on the outer side of the gear; the gear ring is meshed with all the gears simultaneously; the gear ring is rotatably connected to the outer end face of the mounting plate.
During operation, all gears are driven to rotate by rotating the gear ring, the gears drive the threaded rods to rotate, and then the threaded rods are driven to slide along the inner walls of the floating blocks by the aid of threaded matching between the threaded rods and the threaded pipes, so that the axial positioning length of the thin-wall pipe fitting is adjusted, and convenience is brought to users.
Preferably, the outer ring of the annular fixing plate is a conical surface; the conical surface is provided with threads; the annular fixing plate is connected with the threads on the mounting hole through the threads on the conical surface.
The outer ring of the annular fixing plate is set to be the conical surface, the centering performance of the conical surface is better, the overall centering effect of the internal supporting component can be better guaranteed, the interference degree of the clamping force of the external V-shaped surface and the clamping force of the internal supporting component is reduced, the thin-wall pipe fitting can be attached to the V-shaped surface more closely, and the automatic centering precision of the V-shaped surface is further guaranteed.
Preferably, the outer cylindrical surface of the sliding sleeve is in contact fit with the inner wall of the through hole.
Through the contact cooperation of the outer cylindrical surface that sets up the sliding sleeve and the inner wall of through hole, and then make the extrusion force that receives the sliding sleeve directly transmit to the back shaft on, and then prevent that the transmission shaft from being pressed and leading to the bending, and then improved the life of transmission shaft, improved the support ability of sliding sleeve simultaneously, and then improved the stability that thin-walled tube spare was supported, and then improved thin-walled tube spare's centre gripping precision.
Preferably, a supporting locking cap is arranged at the suspended end of the supporting shaft; a cylindrical boss is arranged at the center of the supporting locking cap; the cylindrical surface of the cylindrical boss is attached to the inner wall of the support shaft; a cylindrical blind hole is formed in the cylindrical boss; the extending end of the transmission shaft is inserted into the cylindrical blind hole; the inner wall of the outer ring of the supporting locking cap is provided with threads; the outer ring of the support locking cap is connected with the outer cylindrical surface of the end part of the support shaft through threads.
Support the locking cap through the tip setting at the back shaft, and then surround the back shaft through the screw thread from the outside after supporting the inner wall of back shaft through the cylinder boss, and then realize carrying out the increase in strength to the back shaft tip after the bifurcation under the mutual extruded effect of outer lane through cylinder boss and support locking cap, and then improved the structural strength of back shaft, and then improved the life of back shaft.
The invention has the following beneficial effects:
1. according to the invention, after the thin-wall pipe is inserted between the V-shaped surface of the upper clamping piece and the V-shaped surface of the lower clamping piece, the inner wall of the thin-wall pipe is supported through the inner supporting part, so that the thin-wall pipe has certain extrusion deformation resistance, then the pneumatic telescopic part contracts, so that the upper clamping piece and the lower clamping piece are driven to approach each other, and finally the outer cylindrical surface of the thin-wall pipe is clamped through the V-shaped surface on the upper clamping piece and the V-shaped surface on the lower clamping piece, and the thin-wall pipe is prevented from being extruded and deformed in the clamping process due to the supporting force provided by the inner supporting part, so that the clamping precision of the thin-wall pipe is improved; and the slider that the in-process is connected through the elastic component drives inside support component and freely removes in vertical direction, and then guarantees that the clamping force of outside V profile and inside support component can not take place to interfere, and then has guaranteed that thin-walled tube can be inseparable laminate with the V profile, and then has guaranteed the precision of V profile self-centering, and then guarantees the precision of thin-walled tube final drilling.
2. In the invention, after the thin-wall pipe is inserted between the V-shaped surface of the upper clamping piece and the V-shaped surface of the lower clamping piece, the rotation of the brake motor is controlled, the transmission shaft is driven to rotate by the flexible transmission part, the two sliding sleeves in the same group are driven to approach each other due to the forward thread section and the reverse thread section arranged on the transmission shaft, the included angle between the two supporting rods is reduced, the hinged point between the two supporting rods extends outwards, the arc-shaped elastic plate is unfolded outwards, the unfolded arc-shaped elastic plate is gradually contacted with the inner wall of the thin-wall pipe, the arc-shaped elastic piece contacted with the inner wall of the thin-wall pipe is further bent and deformed, and finally the inner wall of the thin-wall pipe is completely attached, then the brake motor is powered off and locked, and the inner supporting part supports the inner wall of the thin-wall pipe, further, the thin-walled pipe fitting is guaranteed not to deform under the extrusion force of the upper clamping piece and the lower clamping piece in the subsequent process, and the clamping precision of the thin-walled pipe fitting is further guaranteed; meanwhile, the supporting shaft and the mounting plate are connected through a spring and a spherical screw, and the rotating shaft of the transmission shaft and the motor is connected through a flexible transmission part, so that the supporting shaft can swing in any direction relative to the mounting plate, the clamping force of the external V-shaped surface and the clamping force of the internal supporting part cannot interfere, the thin-wall pipe fitting can be tightly attached to the V-shaped surface, the automatic centering precision of the V-shaped surface is guaranteed, and the final drilling precision of the thin-wall pipe fitting is guaranteed.
3. According to the invention, the flexible transmission part is in a hexagonal prism shape, so that the flexible transmission part can well transmit torque, the power of the brake motor is transmitted to the transmission shaft, and the operation of the device is further ensured; the material of flexible drive spare selects the rubber material of high strength simultaneously, and then makes flexible drive spare can also realize through the crooked realization back shaft of self and swing for the mounting panel under guaranteeing to have stable transmission ability, and then guarantees that the clamping-force of the holding power of outside V profile and inside supporting component can not take place to interfere, and then guarantees that thin-walled tube can be inseparable laminate with the V profile, and then guarantees the precision of V profile self-centering.
4. According to the invention, all the gears are driven to rotate by rotating the gear ring, so that the gears drive the threaded rod to rotate, and further the sliding retaining ring is driven to slide along the inner wall of the floating block by the thread fit between the threaded rod and the threaded pipe, so that the axial positioning length of the thin-wall pipe fitting is adjusted, and the use by a user is facilitated.
5. According to the invention, the outer cylindrical surface of the sliding sleeve is in contact fit with the inner wall of the through hole, so that the extrusion force applied to the sliding sleeve is directly transmitted to the supporting shaft, the transmission shaft is prevented from being bent due to being pressed, the service life of the transmission shaft is prolonged, the supporting capacity of the sliding sleeve is improved, the supported stability of the thin-wall pipe fitting is improved, and the clamping precision of the thin-wall pipe fitting is improved.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a schematic view of the overall construction of the drill chuck of the present invention at one angle;
FIG. 2 is a schematic view of the overall construction of the drill chuck of the present invention at another angle;
FIG. 3 is a front view of the drill chuck of the present invention;
FIG. 4 is a schematic view showing the internal structure of the boring jig of the present invention;
FIG. 5 is a schematic view of the installation of the guide and the pneumatic telescoping section of the present invention;
FIG. 6 is a schematic view showing the structure of the connection between the sliding sleeve and the supporting rod according to the present invention;
in the figure: the device comprises an upper clamping piece 1, a lower clamping piece 2, a guide piece 3, a pneumatic telescopic component 4, an elastic piece 5, a guide sliding component 6, a floating block 7, a sliding baffle ring 71, a threaded pipe 72, a threaded rod 73, a gear 74, a gear ring 75, an annular fixing plate 8, an internal supporting component 9, a spherical screw 90, a supporting shaft 91, a rectangular through groove 911, a supporting locking cap 912, a cylindrical boss 913, a sliding sleeve 92, a hinge seat 921, a supporting rod 93, an arc-shaped elastic plate 94, a transmission shaft 95, a flexible transmission piece 96, a first spring 97, a mounting plate 98, a brake motor 99 and a drill bushing 10.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 5, a thin-walled tube drilling fixture with internal floating support comprises an upper clamping piece 1, a lower clamping piece 2, a guide piece 3, a pneumatic telescopic part 4, an elastic part 5, a guide sliding part 6, a floating block 7, an annular fixing plate 8 and an internal support part 9; the lower end of the upper clamping piece 1 is provided with a V-shaped surface; the upper end of the lower clamping piece 2 is provided with a V-shaped surface; the middle parts of the V-shaped surfaces of the upper clamping piece 1 and the lower clamping piece 2 are respectively provided with a stepped hole; the drill sleeves 10 are arranged in the stepped holes; the upper clamping piece 1 is connected with the lower clamping piece 2 through the guide piece 3 and the pneumatic telescopic part 4; the floating block 7 is arranged between the upper clamping piece 1 and the lower clamping piece 2; the upper surface of the floating block 7 is connected with the upper clamping piece 1, and the lower surface of the floating block 7 is connected with the lower clamping piece 2 through the elastic piece 5; the upper end of the side surface of the floating block 7 close to the drill bushing 10 is connected with the upper clamping piece 1, and the lower end of the side surface of the floating block 7 close to the drill bushing 10 is connected with the lower clamping piece 2 through the guide sliding component 6; the interior of the floating block 7 is of a hollow structure; the outer end face of the floating block 7 is provided with a mounting hole; the mounting hole is internally connected with the annular fixing plate 8 through threads; the inner supporting component 9 is fixedly connected to the annular fixing plate 8; the inner support member 9 extends between the V-profile of the upper clamp 1 and the V-profile of the lower clamp 2; the inner support member 9 is used to support the inner wall of the thin-walled tube.
When the device works, after the thin-wall pipe is inserted between the V-shaped surface of the upper clamping piece 1 and the V-shaped surface of the lower clamping piece 2, the inner wall of the thin-wall pipe is supported through the inner supporting part 9, so that the thin-wall pipe has certain extrusion deformation resistance, then the pneumatic telescopic part 4 contracts, so that the upper clamping piece 1 and the lower clamping piece 2 are driven to approach each other, and finally the outer cylindrical surface of the thin-wall pipe is clamped through the V-shaped surface on the upper clamping piece 1 and the V-shaped surface on the lower clamping piece 2, and the thin-wall pipe is prevented from being extruded and deformed in the clamping process due to the supporting force provided by the inner supporting part 9 in the thin-wall pipe, so that the clamping precision of the thin-wall pipe is improved; and the slider 7 that the in-process is connected through elastic component 5 drives inside support component 9 and freely removes in vertical direction, and then guarantees that the clamping force of outside V profile and inside support component 9 can not take place to interfere, and then has guaranteed that thin-walled tube can be inseparable laminate with the V profile, and then has guaranteed the precision of V profile self-centering, and then guarantees the precision of thin-walled tube final drilling.
As shown in fig. 3, 4 and 6, the inner support member 9 includes a support shaft 91, a sliding sleeve 92, a support rod 93, an arc-shaped elastic plate 94, a transmission shaft 95, a flexible transmission member 96, a first spring 97, a mounting plate 98, a brake motor 99 and a spherical screw 90; the outer side of the annular fixing plate 8 is fixedly connected with the mounting plate 98; the support shaft 91 penetrates the slider 7; the supporting shaft 91 is connected with the mounting plate 98 through the first spring 97 and the spherical screw 90; one end of the first spring 97 is fixedly connected to the end face of the supporting shaft 91; the other end of the first spring 97 is abutted against the mounting plate 98; tapered holes are uniformly arranged on the mounting plate 98 at intervals along the circumferential direction; the spherical screw 90 penetrates through the conical hole and then is connected with the end face of the supporting shaft 91; the spherical surface of the spherical screw 90 is in contact with the conical surface of the conical hole; a through hole is formed in the middle of the supporting shaft 91; the through hole is rotationally connected with the transmission shaft 95; one end of the transmission shaft 95 is connected with the rotating shaft of the brake motor 99 through the flexible transmission piece 96; the brake motor 99 is fixedly connected to the mounting plate 98; two groups of forward thread sections and reverse thread sections are arranged on the cylindrical surface at the other end of the transmission shaft 95 at intervals; the sliding sleeves 92 are correspondingly arranged on the forward thread section and the reverse thread section; the sliding sleeve 92 is provided with hinge seats 921 at even intervals along the circumferential direction; rectangular through grooves 911 are uniformly arranged on the supporting shaft 91 at intervals in the circumferential direction; the hinge base 921 slides in the rectangular through slot 911; the two hinge seats 921 in the corresponding group are hinged with one support rod 93; the free ends of the two support rods 93 are hinged to the middle of the lower surface of the arc-shaped elastic plate 94; the arc-shaped elastic plate 94 is arc-shaped in a free state.
When the device works, after the thin-wall pipe is inserted between the V-shaped surface of the upper clamping piece 1 and the V-shaped surface of the lower clamping piece 2, the brake motor 99 is controlled to rotate, the transmission shaft 95 is driven to rotate by the flexible transmission piece 96, the two sliding sleeves 92 in the same group are driven to approach each other due to the forward thread section and the reverse thread section arranged on the transmission shaft 95, the included angle between the two supporting rods 93 is reduced, the hinge point between the two supporting rods 93 extends outwards, the arc-shaped elastic plate 94 is unfolded outwards, the unfolded arc-shaped elastic plate 94 is gradually contacted with the inner wall of the thin-wall pipe, the arc-shaped elastic piece 5 contacted with the inner wall of the thin-wall pipe is further bent and deformed, and finally the inner wall of the thin-wall pipe is completely attached, then the brake motor 99 is powered off and locked, and the inner supporting part 9 supports the inner wall of the thin-wall pipe, further ensuring that the thin-walled pipe fitting cannot deform under the extrusion force of the upper clamping piece 1 and the lower clamping piece 2 in the subsequent process, and further ensuring the clamping precision of the thin-walled pipe fitting; meanwhile, the supporting shaft 91 is connected with the mounting plate 98 through the first spring 97 and the spherical screw 90, and the transmission shaft 95 is connected with the rotating shaft of the motor through the flexible transmission piece 96, so that the supporting shaft 91 can swing in any direction relative to the mounting plate 98, the clamping force of the external V-shaped surface and the clamping force of the internal supporting part 9 are further guaranteed not to interfere, the thin-wall pipe fitting can be tightly attached to the V-shaped surface, the automatic centering precision of the V-shaped surface is guaranteed, and the final drilling precision of the thin-wall pipe fitting is guaranteed.
As shown in fig. 3 and 4, the flexible drive member 96 has a hexagonal prism shape; the flexible transmission member 96 is made of high-strength rubber; the end part of the transmission shaft 95 and the end part of the rotating shaft of the brake motor 99 are both provided with hexagonal prism grooves; one end of the flexible transmission piece 96 is inserted into the hexagonal prism groove at the end of the transmission shaft 95; the other end of the flexible transmission member 96 is inserted into the hexagonal prism groove at the end of the rotating shaft of the brake motor 99.
By arranging the flexible transmission member 96 in a hexagonal prism shape, the flexible transmission member 96 can be ensured to transmit torque well, so that the power of the brake motor 99 is transmitted to the transmission shaft 95, and the operation of the device is ensured; simultaneously flexible drive spare 96's material selects the rubber material of high strength, and then makes flexible drive spare 96 can also realize through the crooked realization back shaft 91 of self for mounting panel 98 swings under guaranteeing to have stable transmission ability, and then guarantees that the clamping-force of the holding power of outside V profile and inside support component 9 can not take place to interfere, and then guarantees that thin-walled tube can be inseparable laminate with the V profile, and then guarantees the precision of V profile self-centering.
As shown in fig. 3 and 4, a slide stopper 71 is provided in the slider 7; the outer ring of the sliding baffle ring 71 is connected with the inner wall of the floating block 7 in a sliding way; threaded pipes 72 are uniformly arranged on the surface of the sliding baffle ring 71 close to one side of the annular fixing plate 8 at intervals along the circumferential direction; threads are arranged in the threaded pipe 72; one end of a threaded rod 73 is connected in the suspended end of the threaded pipe 72 through threads; the other end of the threaded rod 73 penetrates through the mounting plate 98; the other end of the threaded rod 73 is fixedly connected with a gear 74; a gear ring 75 is arranged outside the gear 74; the ring gear 75 meshes with all the gears 74 at the same time; the ring gear 75 is rotatably coupled to an outer end surface of the mounting plate 98.
During operation, all the gears 74 are driven to rotate by rotating the gear ring 75, the gears 74 drive the threaded rods 73 to rotate, and the sliding baffle rings 71 are driven to slide along the inner walls of the floating blocks 7 by the aid of thread matching between the threaded rods 73 and the threaded pipes 72, so that the axial positioning length of the thin-wall pipe fitting is adjusted, and convenience is brought to users.
As shown in fig. 3 and 4, the outer ring of the annular fixing plate 8 is a tapered surface; the conical surface is provided with threads; the annular fixing plate 8 is connected with the thread on the mounting hole through the thread on the conical surface.
The outer ring of the annular fixing plate 8 is set to be the conical surface, the centering performance of the conical surface is better, the overall centering effect of the inner supporting component 9 can be better, the interference degree of the clamping force of the outer V-shaped surface and the clamping force of the inner supporting component 9 is reduced, the thin-wall pipe fitting can be attached to the V-shaped surface more closely, and the automatic centering precision of the V-shaped surface is further guaranteed.
As shown in fig. 3 and 6, the outer cylindrical surface of the sliding sleeve 92 is in contact fit with the inner wall of the through hole.
Through the contact fit of the outer cylindrical surface of the sliding sleeve 92 and the inner wall of the through hole, the extrusion force applied to the sliding sleeve 92 is directly transmitted to the supporting shaft 91, the transmission shaft 95 is prevented from being bent due to pressing, the service life of the transmission shaft 95 is prolonged, the supporting capacity of the sliding sleeve 92 is improved, the stability of the thin-wall pipe support is improved, and the clamping precision of the thin-wall pipe is improved.
As shown in fig. 3 and 4, a support locking cap 912 is arranged at the free end of the support shaft 91; a cylindrical boss 913 is arranged at the center of the supporting locking cap 912; the cylindrical surface of the cylindrical boss 913 is attached to the inner wall of the support shaft 91; a cylindrical blind hole is formed in the cylindrical boss 913; the extending end of the transmission shaft 95 is inserted into the cylindrical blind hole; the inner wall of the outer ring of the supporting locking cap 912 is provided with threads; the outer ring of the support locking cap 912 is connected with the outer cylindrical surface of the end of the support shaft 91 through threads.
When the device works, after the thin-wall pipe is inserted between the V-shaped surface of the upper clamping piece 1 and the V-shaped surface of the lower clamping piece 2, the brake motor 99 is controlled to rotate, the transmission shaft 95 is driven to rotate by the flexible transmission piece 96, the two sliding sleeves 92 in the same group are driven to approach each other due to the forward threaded section and the reverse threaded section arranged on the transmission shaft 95, the included angle between the two supporting rods 93 is reduced, the hinged point between the two supporting rods 93 extends outwards, the arc-shaped elastic plate 94 is unfolded outwards, the unfolded arc-shaped elastic plate 94 is gradually contacted with the inner wall of the thin-wall pipe, the arc-shaped elastic piece 5 contacted with the inner wall of the thin-wall pipe is further bent and deformed, the inner wall of the thin-wall pipe is completely attached, then the brake motor 99 is powered off and locked, and the inner supporting part 9 supports the inner wall of the thin-wall pipe, further ensuring that the thin-walled pipe fitting cannot deform under the extrusion force of the upper clamping piece 1 and the lower clamping piece 2 in the subsequent process, and further ensuring the clamping precision of the thin-walled pipe fitting; meanwhile, the supporting shaft 91 is connected with the mounting plate 98 through the first spring 97 and the spherical screw 90, and the transmission shaft 95 is connected with a rotating shaft of the motor through the flexible transmission piece 96, so that the supporting shaft 91 can swing in any direction relative to the mounting plate 98, the clamping force of the external V-shaped surface and the clamping force of the internal supporting part 9 are further guaranteed not to interfere, the thin-wall pipe fitting can be tightly attached to the V-shaped surface, the automatic centering precision of the V-shaped surface is further guaranteed, and the final drilling precision of the thin-wall pipe fitting is further guaranteed; the inner wall of the thin-wall pipe is supported by the inner supporting component 9, so that the thin-wall pipe has certain extrusion deformation resistance, then the pneumatic telescopic component 4 contracts to drive the upper clamping piece 1 and the lower clamping piece 2 to approach each other, and finally the outer cylindrical surface of the thin-wall pipe is clamped by the V-shaped surface on the upper clamping piece 1 and the V-shaped surface on the lower clamping piece 2, and the thin-wall pipe is prevented from being extruded and deformed in the clamping process due to the supporting force provided by the inner supporting component 9, so that the clamping precision of the thin-wall pipe is improved; and the slider 7 that the in-process is connected through elastic component 5 drives inside support component 9 and freely removes in vertical direction, and then guarantees that the clamping force of outside V profile and inside support component 9 can not take place to interfere, and then has guaranteed that thin-walled tube can be inseparable laminate with the V profile, and then has guaranteed the precision of V profile self-centering, and then guarantees the precision of thin-walled tube final drilling.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. The utility model provides a thin-walled tube spare boring grab with inside floating support which characterized in that: comprises an upper clamping piece (1), a lower clamping piece (2), a guide piece (3), a pneumatic telescopic part (4), an elastic piece (5), a guide sliding part (6), a floating block (7), an annular fixing plate (8) and an internal supporting part (9); the lower end of the upper clamping piece (1) is provided with a V-shaped surface; the upper end of the lower clamping piece (2) is provided with a V-shaped surface; stepped holes are formed in the middle of the V-shaped surface of the upper clamping piece (1) and the middle of the V-shaped surface of the lower clamping piece (2); drill sleeves (10) are arranged in the stepped holes; the upper clamping piece (1) is connected with the lower clamping piece (2) through the guide piece (3) and the pneumatic telescopic part (4); the floating block (7) is arranged between the upper clamping piece (1) and the lower clamping piece (2); the upper surface of the floating block (7) is connected with the upper clamping piece (1) and the lower surface of the floating block (7) is connected with the lower clamping piece (2) through the elastic piece (5); the upper end of the side surface of the floating block (7) close to the drill bushing (10) is connected with the upper clamping piece (1), and the lower end of the side surface of the floating block (7) close to the drill bushing (10) is connected with the lower clamping piece (2) through the guide sliding component (6); the interior of the floating block (7) is of a hollow structure; the end face of the outer side of the floating block (7) is provided with a mounting hole; the mounting hole is internally connected with the annular fixing plate (8) through threads; the annular fixing plate (8) is fixedly connected with the internal supporting component (9); the inner support part (9) extends between the V-profile of the upper clamp (1) and the V-profile of the lower clamp (2); the internal support part (9) is used for supporting the inner wall of the thin-wall pipe fitting.
2. The thin-walled tube drilling fixture with internal floating support of claim 1, wherein: the inner supporting part (9) comprises a supporting shaft (91), a sliding sleeve (92), a supporting rod (93), an arc-shaped elastic plate (94), a transmission shaft (95), a flexible transmission piece (96), a first spring (97), a mounting plate (98), a brake motor (99) and a spherical screw (90); the outer side of the annular fixing plate (8) is fixedly connected with the mounting plate (98); the supporting shaft (91) penetrates through the floating block (7); the supporting shaft (91) is connected with the mounting plate (98) through the first spring (97) and the spherical screw (90); one end of the first spring (97) is fixedly connected to the end face of the supporting shaft (91); the other end of the first spring (97) is abutted against the mounting plate (98); tapered holes are uniformly arranged on the mounting plate (98) at intervals along the circumferential direction; the spherical screw (90) penetrates through the conical hole and then is connected with the end face of the supporting shaft (91); the spherical surface of the spherical screw (90) is in contact with the conical surface of the conical hole; a through hole is formed in the middle of the supporting shaft (91); the transmission shaft (95) is rotationally connected with the through hole; one end of the transmission shaft (95) is connected with a rotating shaft of the brake motor (99) through the flexible transmission piece (96); the brake motor (99) is fixedly connected to the mounting plate (98); two groups of forward thread sections and reverse thread sections are arranged on the cylindrical surface at the other end of the transmission shaft (95) at intervals; the forward thread section and the reverse thread section are respectively and correspondingly provided with the sliding sleeve (92); the sliding sleeve (92) is provided with hinge seats (921) at even intervals along the circumferential direction; rectangular through grooves (911) are uniformly arranged on the supporting shaft (91) at intervals along the circumferential direction; the hinge base (921) slides in the rectangular through slot (911); the two hinge seats (921) in the corresponding group are respectively hinged with one support rod (93); the free ends of the two support rods (93) are hinged to the middle of the lower surface of the arc-shaped elastic plate (94); the arc-shaped elastic plate (94) is arc-shaped in a free state.
3. The thin-walled tube drilling fixture with internal floating support of claim 2, wherein: the flexible transmission member (96) is in the shape of a hexagonal prism; the flexible transmission member (96) is made of high-strength rubber; the end part of the transmission shaft (95) and the end part of a rotating shaft of the brake motor (99) are both provided with hexagonal prism grooves; one end of the flexible transmission piece (96) is inserted into the hexagonal prism groove at the end part of the transmission shaft (95); the other end of the flexible transmission piece (96) is inserted into the hexagonal prism groove at the end part of the rotating shaft of the brake motor (99).
4. The thin-walled tube drilling fixture with internal floating support of claim 3, wherein: a sliding baffle ring (71) is arranged in the floating block (7); the outer ring of the sliding baffle ring (71) is in sliding connection with the inner wall of the floating block (7); threaded pipes (72) are uniformly arranged on the surface of the sliding baffle ring (71) close to one side of the annular fixing plate (8) at intervals along the circumferential direction; threads are arranged in the threaded pipe (72); one end of a threaded rod (73) is connected into the suspended end of the threaded pipe (72) through threads; the other end of the threaded rod (73) penetrates through the mounting plate (98); the end part of the other end of the threaded rod (73) is fixedly connected with a gear (74); a gear ring (75) is arranged outside the gear (74); the ring gear (75) meshes with all the gears (74) simultaneously; the gear ring (75) is rotatably connected to the outer end face of the mounting plate (98).
5. The thin-walled tube drilling fixture with internal floating support of claim 4, wherein: the outer ring of the annular fixing plate (8) is a conical surface; the conical surface is provided with threads; the annular fixing plate (8) is connected with the thread on the mounting hole through the thread on the conical surface.
6. The thin-walled tube drilling fixture with internal floating support of claim 5, wherein: the outer cylindrical surface of the sliding sleeve (92) is in contact fit with the inner wall of the through hole.
7. The thin-walled tube drilling fixture with internal floating support of claim 6, wherein: a supporting locking cap (912) is arranged at the suspended end of the supporting shaft (91); a cylindrical boss (913) is arranged at the center of the supporting locking cap (912); the cylindrical surface of the cylindrical boss (913) is attached to the inner wall of the support shaft (91); a cylindrical blind hole is formed in the cylindrical boss (913); the extending end of the transmission shaft (95) is inserted into the cylindrical blind hole; the inner wall of the outer ring of the supporting locking cap (912) is provided with threads; the outer ring of the support locking cap (912) is connected with the outer cylindrical surface of the end part of the support shaft (91) through threads.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010548891.XA CN111659932B (en) | 2020-06-16 | 2020-06-16 | Thin-wall pipe fitting drilling clamp with internal floating support |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010548891.XA CN111659932B (en) | 2020-06-16 | 2020-06-16 | Thin-wall pipe fitting drilling clamp with internal floating support |
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| CN111659932A true CN111659932A (en) | 2020-09-15 |
| CN111659932B CN111659932B (en) | 2021-05-14 |
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| CN202010548891.XA Active CN111659932B (en) | 2020-06-16 | 2020-06-16 | Thin-wall pipe fitting drilling clamp with internal floating support |
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| US4811962A (en) * | 1984-11-23 | 1989-03-14 | Cameron Jr G N | Holder for machining thin walled cylinder |
| CN203495590U (en) * | 2013-10-30 | 2014-03-26 | 宁波勋辉电器有限公司 | Linkage floating supporting clamp for machining thin-walled parts |
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| CN111659932B (en) | 2021-05-14 |
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Address after: Room 303, 3 stairs, block 10, cuipingyuan, 290 zhongpingcha Road, Panyu District, Guangzhou City, Guangdong Province, 511400 Applicant after: Han Wenfei Address before: 236200 No.104 Hexi natural village, Xiyuan village, Jiangkou Town, Yingshang County, Fuyang City, Anhui Province Applicant before: Han Wenfei |
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Effective date of registration: 20221108 Address after: 115004 No. 2, Minxing North Street, Xishi District, Yingkou City, Liaoning Province Patentee after: YINGKOU CHANGXIN PIPE MANUFACTURING Co.,Ltd. Address before: Room 303, 3 stairs, block 10, cuipingyuan, 290 zhongpingcha Road, Panyu District, Guangzhou City, Guangdong Province, 511400 Patentee before: Han Wenfei |
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