CN112045229B - Sheet clamp for numerical control machining center - Google Patents
Sheet clamp for numerical control machining center Download PDFInfo
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- CN112045229B CN112045229B CN202010873110.4A CN202010873110A CN112045229B CN 112045229 B CN112045229 B CN 112045229B CN 202010873110 A CN202010873110 A CN 202010873110A CN 112045229 B CN112045229 B CN 112045229B
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- sliding
- guide
- mounting
- blocks
- installation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/13—Surface milling of plates, sheets or strips
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C9/00—Details or accessories so far as specially adapted to milling machines or cutter
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
Abstract
The invention belongs to the technical field of clamps, and particularly relates to a sheet clamp for a numerical control machining center, which comprises an underframe, an upper clamping module, a tensioning module and a lower clamping module, wherein in the machining process, if a pressing wheel on the lower side of a whole mounting disc is matched with a machined step surface, the mounting disc moves downwards under the action of a corresponding reset spring to be contacted with the bottom surface of the step surface, and the sheet is continuously pressed; the installation sliding rod and the installation disc are installed in a hinged mode through the spherical hinge mechanism, the installation disc can swing relative to the installation sliding rod when the installation disc located in the step surface moves out of the step surface in the machining process, and the pressing wheel on the lower side of the installation disc can still press the thin plate continuously in the swinging process; meanwhile, the pressing plate can be guaranteed to be smoothly moved out of the step surface through swinging.
Description
Technical Field
The invention belongs to the technical field of clamps, and particularly relates to a sheet clamp for a numerical control machining center.
Background
Sheet processing is generally divided into four categories:
first, machining by a saw blade.
Second, laser machining.
And thirdly, machining by using a numerical control milling machine.
Fourthly, stamping.
For the surface processing of the thin plate, the thin plate can only be processed by a numerical control milling machine; for the machining of a numerical control milling machine, no better method is used for clamping the thin plate at present.
At present, a method for clamping a thin plate is to place a supporting plate at the lower side and tightly press the supporting plate by using a bolt or a pressing plate. However, when the machining area is distributed on the whole surface of the thin plate, the clamping position needs to be changed, which causes machining errors.
The invention designs a numerical control machining clamp for machining the surface of a thin plate, which solves the problems.
Disclosure of Invention
In order to solve the defects in the prior art, the invention discloses a sheet clamp for a numerical control machining center, which is realized by adopting the following technical scheme.
A sheet clamp for a numerical control machining center comprises an underframe, an upper clamping module, a tensioning module and a lower clamping module, wherein the underframe is fixedly arranged on the upper side of a machining center workbench through bolts; four corners of the bottom frame are respectively provided with a tensioning module which can tension four corners of the thin plate; an upper clamping module and a lower clamping module which play a clamping role in the upper and lower parts of the thin plate processing area are distributed and mounted on the upper side and the lower side of the bottom frame.
The tensioning module comprises a pressing plate, an adjusting screw rod, a mounting sliding block and a pull rod, wherein the mounting sliding block is slidably mounted on the upper side of the bottom frame, and the lower end of the pull rod is fixedly mounted on the upper side of one end of the mounting sliding block; the clamp plate passes through the screw rod to be installed at the upside of installation slider, and adjusting screw rotates to be installed at the upside of chassis, and with installation slider screw-thread fit.
All open a circular port on four corners of sheet metal, the sheet metal is installed on four installation sliders through the cooperation of four pull rods in four circular ports and four taut modules, and the upside at four corners of sheet metal compresses tightly it through four clamp plates.
The lower clamping module comprises lower sliding blocks, second guide sliding rods, lower mounting blocks and pressing wheels, wherein the four lower sliding blocks are symmetrically arranged on the upper side of the bottom frame in a sliding mode in a group-by-group mode, and the sliding tracks of two adjacent lower sliding blocks are vertically distributed in the same plane at an angle of 90 degrees; two second guide slide bars are symmetrically arranged between two symmetrical lower slide blocks, and four second guide slide bars arranged on two groups of lower slide blocks are distributed in a staggered manner from top to bottom in pairs; the four lower mounting blocks are respectively slidably mounted on the four second guide slide bars, and each lower mounting block corresponds to two second guide slide bars which are staggered up and down and project to form 90 degrees; and a plurality of press wheels are uniformly arranged on the upper sides of the four lower mounting blocks in a rolling manner, the press wheels are spherical bodies, and the press wheels are matched with the lower end faces of the thin plates.
Four lower sliding blocks in the four lower clamping modules are respectively provided with a motor, four third gears are respectively arranged on output shafts of the four motors, four racks are fixedly arranged on the upper side of the bottom frame in a pairwise symmetrical mode, two adjacent racks are vertically distributed in the same plane at 90 degrees, and the four racks are meshed with the four third gears in a one-to-one correspondence mode.
The upper clamping module comprises a first guide sliding rod, a pressing unit and upper sliding blocks, wherein the four upper sliding blocks are fixedly arranged on the upper sides of the four lower sliding blocks in a one-to-one correspondence manner through bolts; two first guide slide bars are symmetrically arranged between two upper slide blocks which are symmetrical to each other, and four first guide slide bars arranged on the four upper slide blocks are arranged in a group in a staggered manner from top to bottom; four pressing units are mounted on the four first guide slide bars.
The pressing unit comprises an upper mounting block, a mounting sleeve, a mounting sliding sleeve, mounting sliding rods, a spherical hinge mechanism, a mounting disc and a pressing wheel, wherein the upper mounting block is slidably mounted on two first guide sliding rods which are staggered up and down and project into an angle of 90 degrees in four first guide sliding rods; the lower end of the transmission screw is in threaded fit with the mounting sliding sleeve; the driving rod is arranged on the mounting sleeve and is in transmission connection with the transmission screw rod through a gear; the upper end of the installation sliding rod is slidably installed on the inner side of the lower end of the installation sliding sleeve, and a return spring is installed between the upper end of the installation sliding rod and the inner end face of the installation sliding sleeve; the mounting disc is hinged to the lower side of the mounting sliding rod through a spherical hinge mechanism, a plurality of pressing wheels are arranged on the lower side of the mounting disc in a rolling mode, the pressing wheels are spherical bodies, and the pressing wheels are matched with the upper end face of the thin plate.
As a further improvement of the present technology, the upper mounting block is provided with two first guide holes for the corresponding two first guide slide bars to pass through, and the lower mounting block is provided with two second guide holes for the corresponding two second guide slide bars to pass through.
As a further improvement of the technology, the lower end of the mounting sleeve is provided with a mounting groove, the upper side of the mounting groove is provided with a sliding round hole, and the round surface of the sliding round hole is provided with a guide ring groove; the upside of slip round hole has the installation cavity, and it has the shaft hole to open on the disc of installation cavity.
The driving rod is rotatably installed on the installation sleeve through the shaft hole, the first gear is fixedly installed on the driving rod and is located in the installation cavity of the installation sleeve, the lower end of the transmission screw rod is provided with external threads, the transmission screw rod is provided with a guide ring block, and the transmission screw rod is installed in the installation sleeve through the rotary matching of the guide ring block and the guide ring groove; the second gear is fixedly arranged at the upper end of the transmission screw rod and is meshed with the first gear; the upper end surface of the mounting sliding sleeve is provided with a threaded hole, and the mounting sliding sleeve is in threaded fit with the external thread at the lower end of the transmission screw rod through the threaded hole.
As a further improvement of the technology, the circular surface of the mounting groove is symmetrically provided with two first guide sliding chutes, the outer circular surface of the upper end of the mounting sliding sleeve is symmetrically provided with two first guide sliding blocks, and the two first guide sliding blocks are in sliding fit with the two first guide sliding chutes.
A first sliding groove is formed in the lower side of a threaded hole formed in the installation sliding sleeve, two second guide sliding grooves are symmetrically formed in the circular surface of the first sliding groove, two second guide sliding blocks are symmetrically installed on the outer circular surface of the upper end of the installation sliding rod, and the two second guide sliding blocks are in sliding fit with the two second guide sliding grooves.
As a further improvement of the technology, a plurality of marking grooves are uniformly formed in the upper portion and the lower portion of the outer circular surface of the mounting groove, one marking block is mounted on one of the two second guide sliding blocks, and the marking block penetrates through the mounting sliding sleeve to be matched with the marking grooves formed in the outer circular surface.
As a further improvement of the technology, four corners of the upper side of the underframe are respectively and fixedly provided with a guide shell, each guide shell is internally provided with a second sliding groove, one side of each second sliding groove is provided with an annular groove, and four installation sliding blocks are slidably installed in the corresponding guide shells through the corresponding second sliding grooves; and the four adjusting screws are arranged in the four guide shells through the guide circular rings on the four adjusting screws and the four annular grooves on the four guide shells in a rotating fit manner.
As a further improvement of the technology, four adjusting screws are respectively and fixedly provided with a fourth gear, three gear shafts are respectively and fixedly arranged on the upper side of the underframe through a plurality of fixed supports, two fourth gears are respectively and symmetrically arranged on the three gear shafts, and the fourth gears arranged on the three gear shafts are respectively and correspondingly meshed with the fourth gears arranged on the four adjusting screws one by one; the four adjusting screws are synchronously connected through a fourth gear; and one of the four adjusting screws is fixedly provided with a rocker.
As a further improvement of the present technology, the four motors mounted on the four lower sliders are respectively mounted on the corresponding lower slider through a motor support.
As a further improvement of the technology, the upper side of the underframe is provided with four trapezoidal guide grooves, every two of the four trapezoidal guide grooves are in a group, two trapezoidal guide grooves in the same group are mutually symmetrical, and two adjacent trapezoidal guide grooves in the four trapezoidal guide grooves are vertically distributed at 90 degrees; the lower sides of the four lower sliding blocks are respectively provided with a trapezoidal guide block, and the four lower sliding blocks are arranged on the upper side of the bottom frame through the sliding fit of the trapezoidal guide blocks and the four trapezoidal guide grooves on the four lower sliding blocks.
As a further improvement of the technology, the chassis is provided with a reinforcing rib.
Compared with the traditional clamp technology, the clamp has the following beneficial effects:
1. when the surface of the thin plate is processed, the periphery of the processing area on the thin plate is clamped up and down through eight fulcrum areas which are distributed up and down by the upper clamping module and the lower clamping module, and the phenomenon of bed falling occurs when the thin plate is placed; the consistency of a processing area of the thin plate and a reference plane in the processing process is ensured, the processing stability of the thin plate is improved, and the processing precision is ensured; meanwhile, the four corners of the thin plate are tensioned by the four tensioning modules, and the upper side of the thin plate is clamped by the pressing plate, so that the stability of the thin plate in the machining process is ensured, and the machining precision is ensured.
2. In the invention, the plurality of press wheels are arranged on the lower side of the mounting disc, so that in the processing process, if part of the press wheels arranged on the lower side of the mounting disc are matched with the processed step surface in the moving process, other press wheels which are not matched with the step surface and correspond to the lower side of the mounting disc can continuously press the unprocessed area of the thin plate, and the press wheels matched with the processed step surface cannot sink into the step surface to influence the clamping effect on the thin plate.
3. In the processing process, if the pinch rollers on the lower side of the whole mounting disc are matched with the processed step surface, the mounting disc moves downwards under the action of the corresponding return springs to be contacted with the bottom surface of the step surface, and the thin plate is continuously pressed; the installation sliding rod and the installation disc are installed in a hinged mode through the spherical hinge mechanism, the installation disc can swing relative to the installation sliding rod when the installation disc located in the step surface moves out of the step surface in the machining process, and the pressing wheel on the lower side of the installation disc can still press the thin plate continuously in the swinging process; meanwhile, the pressing plate can be guaranteed to be smoothly moved out of the step surface through swinging.
4. According to the invention, the rotation synchronism of the four adjusting screws is ensured through the transmission of the fourth gear, and the four adjusting screws can be driven to rotate simultaneously only by rotating the rocker to drive the corresponding adjusting screws to rotate.
5. The mounting disc designed by the invention is of a circular structure, and can adapt to the acting force between the thin plate and the mounting disc through the rotation of the mounting disc in the moving process of the thin plate.
Drawings
Fig. 1 is an external view of an entire part.
Fig. 2 is an external view of the clamp mechanism.
Fig. 3 is a schematic structural view of an upper clamping module.
Fig. 4 is a schematic view of the upper slider structure.
Fig. 5 is a schematic structural view of the pressing unit.
Fig. 6 is a schematic view of the upper mounting block structure.
Fig. 7 is a schematic structural diagram of the mounting sleeve and the mounting sliding sleeve.
Fig. 8 is a mounting plate mounting schematic.
Figure 9 is a tensioning module installation schematic.
Figure 10 is a schematic view of a tensioning module configuration.
FIG. 11 is a schematic view of a platen and mounting block configuration.
Fig. 12 is a schematic view of the lower clamp module installation.
Fig. 13 is a schematic view of a lower mounting block structure.
Fig. 14 is a schematic view of a second guide slide mounting.
Fig. 15 is a schematic view of the chassis structure.
Fig. 16 is a schematic view of the guide housing installation.
Number designation in the figures: 1. a thin plate; 2. a cutter head; 3. a work table; 4. a clamp mechanism; 5. a chassis; 6. an upper clamping module; 7. tensioning the module; 8. a lower clamping module; 9. a first guide slide bar; 10. a pressing unit; 11. an upper slide block; 12. an upper mounting block; 13. installing a sleeve; 14. installing a sliding sleeve; 15. installing a sliding rod; 16. a spherical hinge mechanism; 17. mounting a disc; 18. a pinch roller; 19. a first guide hole; 20. a shaft hole; 21. a mounting cavity; 22. a guide ring groove; 23. sliding the circular hole; 24. mounting grooves; 25. a first guide chute; 26. marking a groove; 27. a first sliding groove; 28. a second guide chute; 29. a threaded hole; 30. a first guide slider; 31. a drive rod; 32. a first gear; 33. a second gear; 34. a guide ring block; 35. a drive screw; 36. a return spring; 37. a second guide slider; 38. marking a block; 39. pressing a plate; 40. adjusting the screw rod; 41. a guide ring; 42. installing a sliding block; 43. a pull rod; 44. a lower mounting block; 45. a second guide hole; 46. a lower slide block; 47. supporting a motor; 48. a motor; 49. a third gear; 50. a trapezoidal guide block; 51. a second guide slide bar; 52. a guide housing; 53. a trapezoidal guide groove; 54. a rack; 55. an annular groove; 56. a second sliding groove; 57. a rocker; 58. a gear shaft; 59. a fourth gear; 60. fixing and supporting; 61. and (5) reinforcing ribs.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples or figures are illustrative of the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1 and 2, the device comprises an underframe 5, an upper clamping module 6, a tensioning module 7 and a lower clamping module 8, wherein the underframe 5 is fixedly arranged on the upper side of a machining center worktable 3 through bolts; four corners of the bottom frame 5 are respectively provided with a tensioning module 7 which can tension four corners of the thin plate 1; an upper clamping module 6 and a lower clamping module 8 which play a clamping role on the upper and lower sides of the processing area of the thin plate 1 are distributed and installed on the upper side and the lower side of the bottom frame 5.
When the surface of the thin plate 1 is machined, the periphery of the machining area on the thin plate 1 is clamped up and down through eight fulcrum areas which are vertically distributed by the upper clamping module 6 and the lower clamping module 8, and the thin plate 1 is placed to have a tatting phenomenon; the consistency of the processing area of the thin plate 1 and the reference plane in the processing process is ensured, the processing stability of the thin plate 1 is improved, and the processing precision is ensured.
As shown in fig. 9, the tensioning module 7 comprises a pressing plate 39, an adjusting screw 40, a mounting slider 42 and a pull rod 43, wherein the mounting slider 42 is slidably mounted on the upper side of the base frame 5, and as shown in fig. 11, the lower end of the pull rod 43 is fixedly mounted on the upper side of one end of the mounting slider 42; the pressing plate 39 is mounted on the upper side of the mounting slider 42 by a screw, and the adjusting screw 40 is rotatably mounted on the upper side of the base frame 5 and is screw-engaged with the mounting slider 42.
In the invention, four corners of the thin plate 1 are clamped by the four tensioning modules 7, so that the stability of the thin plate 1 in the processing process ensures the processing precision.
All open a circular port on four corners of sheet metal 1, sheet metal 1 is installed on four installation sliders 42 through the cooperation of four circular ports and four pull rods 43 in four tensioning modules 7, and the upside at four corners of sheet metal 1 compresses tightly it through four clamp plates 39.
As shown in fig. 12, the lower clamping module 8 includes lower sliding blocks 46, second guide sliding rods 51, lower mounting blocks 44, and pressing wheels 18, wherein four lower sliding blocks 46 are symmetrically mounted on the upper side of the base frame 5 in a group-by-group manner, and the sliding tracks of two adjacent lower sliding blocks 46 are vertically distributed at 90 degrees in the same plane; two second guide slide bars 51 are symmetrically arranged between two mutually symmetrical lower slide blocks 46, and four second guide slide bars 51 arranged on two groups of lower slide blocks 46 are distributed in a staggered manner from top to bottom; the four lower mounting blocks 44 are respectively slidably mounted on the four second guide slide bars 51, and each lower mounting block 44 corresponds to two second guide slide bars 51 which are staggered up and down and project to form 90 degrees; as shown in fig. 13, a plurality of press wheels 18 are uniformly and rollably mounted on the upper sides of the four lower mounting blocks 44, the press wheels 18 are spheres, and the press wheels 18 are matched with the lower end surface of the thin plate 1.
As shown in fig. 14, four lower sliders 46 of the four lower clamping modules 8 are respectively provided with a motor 48, four third gears 49 are respectively installed on output shafts of the four motors 48, four racks 54 are symmetrically and fixedly installed on the upper side of the base frame 5 in a pairwise and group-by-group manner, two adjacent racks 54 are vertically distributed at 90 degrees in the same plane, and the four racks 54 are correspondingly engaged with the four third gears 49 one by one.
The four motors 48 of the present invention are connected to the track to be processed by signal transmission; in the machining process, four motors 48 are controlled to drive four third gears 49 to rotate according to the machining track, the four third gears 49 rotate under the action of corresponding racks 54 to control the four lower sliding blocks 46 to slide, the four lower sliding blocks 46 slide to drive the four lower mounting blocks 44 to slide along with the machining track through corresponding second guide sliding rods 51, and a cutter is always positioned between the four lower sliding blocks 46 in the sliding process; the lower end surface of the processing area of the thin plate 1 is supported by the press wheels 18 mounted on the four lower mounting blocks 44 during the sliding process.
As shown in fig. 3, the upper clamping module 6 includes a first guide sliding rod 9, a pressing unit 10, and an upper sliding block 11, wherein, as shown in fig. 2 and 4, four upper sliding blocks 11 are fixedly mounted on the upper sides of four lower sliding blocks 46 in a one-to-one correspondence manner through bolts; as shown in fig. 3, two first guide slide bars 9 are symmetrically installed between two upper slide blocks 11 that are symmetrical to each other, and four first guide slide bars 9 installed on four upper slide blocks 11 are arranged in a staggered manner up and down in pairs; four pressing units 10 are mounted on the four first guide slides 9.
As shown in fig. 5, the pressing unit 10 includes an upper mounting block 12, a mounting sleeve 13, a mounting sliding sleeve 14, mounting sliding rods 15, a spherical hinge mechanism 16, a mounting disc 17, and a pressing wheel 18, wherein as shown in fig. 3, the upper mounting block 12 is slidably mounted on two first guide sliding rods 9, which are staggered up and down and project at 90 degrees, of the four first guide sliding rods 9, as shown in fig. 5, the upper end of the mounting sleeve 13 is fixedly mounted on the lower side of the upper mounting block 12, as shown in fig. 5 and 7, the mounting sliding sleeve 14 is mounted in the mounting sleeve 13 through sliding fit of a first guide sliding block 30 and a first guide sliding groove 25, and a transmission screw 35 is rotatably mounted in the mounting sleeve 13; the lower end of the transmission screw 35 is in threaded fit with the mounting sliding sleeve 14; as shown in fig. 5, the driving rod 31 is mounted on the mounting sleeve 13, and the driving rod 31 is in transmission connection with the transmission screw 35 through a gear; as shown in fig. 7 and 8, the upper end of the mounting slide rod 15 is slidably mounted inside the lower end of the mounting slide sleeve 14, and a return spring 36 is mounted between the upper end of the mounting slide rod 15 and the inner end surface of the mounting slide sleeve 14; the mounting plate 17 is hinged to the lower side of the mounting slide rod 15 through a spherical hinge mechanism 16, as shown in fig. 8, a plurality of pressing wheels 18 are arranged on the lower side of the mounting plate 17 in a rolling manner, the pressing wheels 18 are spheres, and the pressing wheels 18 are matched with the upper end surface of the thin plate 1.
In the invention, when the four lower sliding blocks 46 slide, the four lower sliding blocks 46 drive the four upper sliding blocks 11 to slide, and the four upper sliding blocks 11 slide to drive the four upper mounting blocks 12 to slide along with a processing track through the corresponding first guide sliding rods 9; the four upper mounting blocks 12 slide to drive the four mounting discs 17 to slide through the mounting sleeves 13, the mounting sliding sleeves 14 and the mounting sliding rods 15, and press wheels 18 mounted on the four mounting discs 17 exert pressure on the upper end face of the processing area of the thin plate 1 in the sliding process.
In the initial state, the upper end of the mounting sleeve 14 contacts the upper end face of the mounting groove 24 formed in the mounting sleeve 13, and the mounting slide rod 15 is located at the uppermost side.
In the invention, a plurality of pressing wheels 18 are arranged on the lower side of an installation disc 17, so that in the processing process, if part of the pressing wheels 18 arranged on the lower side of the installation disc 17 are matched with the processed step surface in the moving process of the pressing wheels 18 arranged on the lower side of the installation disc 17, other pressing wheels 18 which are not matched with the step surface and correspond to the lower side of the installation disc 17 can also continuously press the unprocessed area of the thin plate 1, and the pressing wheels 18 matched with the processed step surface cannot be sunk into the step surface to influence the clamping effect on the thin plate 1; on the other hand, the pressure of the pressing wheels 18 on the thin plate 1 can be dispersed through the pressing wheels 18, and the pressing wheels 18 are prevented from pressing the thin plate 1 to form a step surface.
In the processing process, if the pressing wheel 18 on the lower side of the whole mounting disc 17 is matched with the processed step surface, the mounting disc 17 moves downwards under the action of the corresponding return spring 36 to be contacted with the bottom surface of the step surface, and the thin plate 1 is continuously pressed; the installation slide rod 15 and the installation disc 17 designed by the invention are hinged through the spherical hinge mechanism 16, when the installation disc 17 positioned in the step surface moves out of the step surface in the machining process, the installation disc 17 swings relative to the installation slide rod 15, and the pressing wheel 18 at the lower side of the installation disc 17 can continue to press the thin plate 1 in the swinging process; meanwhile, the pressing plate 39 can be smoothly moved out of the step surface by swinging.
As shown in fig. 6, the upper mounting block 12 is provided with two first guide holes 19 for the corresponding two first guide sliding rods 9 to pass through, and as shown in fig. 13, the lower mounting block 44 is provided with two second guide holes 45 for the corresponding two second guide sliding rods 51 to pass through.
As shown in fig. 7, the lower end of the mounting sleeve 13 has a mounting groove 24, the upper side of the mounting groove 24 has a sliding circular hole 23, and the circular surface of the sliding circular hole 23 is provided with a guide ring groove 22; the upper side of the sliding round hole 23 is provided with a mounting cavity 21, and the round surface of the mounting cavity 21 is provided with a shaft hole 20.
As shown in fig. 7 and 8, the driving rod 31 is rotatably mounted on the mounting sleeve 13 through the shaft hole 20, the first gear 32 is fixedly mounted on the driving rod 31 and located in the mounting cavity 21 of the mounting sleeve 13, the lower end of the driving screw 35 has an external thread, the driving screw 35 is mounted with a guide ring block 34, and the driving screw 35 is mounted in the mounting sleeve 13 through the rotary fit of the guide ring block 34 and the guide ring groove 22; the second gear 33 is fixedly arranged at the upper end of the transmission screw 35, and the second gear 33 is meshed with the first gear 32; the upper end surface of the mounting sliding sleeve 14 is provided with a threaded hole 29, and the mounting sliding sleeve 14 is in threaded fit with the external thread at the lower end of the transmission screw 35 through the threaded hole 29.
The guide sliding block plays a role in limiting the sliding of the transmission screw 35, so that the transmission screw 35 can only rotate and cannot slide in the rotating process, and the rotation of the transmission screw 35 can smoothly drive the mounting sliding sleeve 14 to slide up and down.
As shown in fig. 7, two first guiding sliding grooves 25 are symmetrically formed on the circular surface of the mounting groove 24, two first guiding sliding blocks 30 are symmetrically mounted on the outer circular surface of the upper end of the mounting sliding sleeve 14, and as shown in fig. 5, the two first guiding sliding blocks 30 are slidably engaged with the two first guiding sliding grooves 25.
As shown in fig. 7, a first sliding groove 27 is formed on the lower side of the threaded hole 29 formed in the mounting sliding sleeve 14, two second guiding sliding grooves 28 are symmetrically formed on the circular surface of the first sliding groove 27, two second guiding sliding blocks 37 are symmetrically mounted on the outer circular surface of the upper end of the mounting sliding rod 15, and the two second guiding sliding blocks 37 are in sliding fit with the two second guiding sliding grooves 28.
As shown in fig. 7, a plurality of marking grooves 26 are uniformly formed on the outer circumferential surface of the mounting groove 24 from top to bottom, a marking block 38 is mounted on one of the two second guide sliders 37, and the marking block 38 penetrates through the mounting sliding sleeve 14 to be matched with the marking groove 26 formed on the outer circumferential surface; the marking blocks 38 and the marking grooves 26 are used for better observing the pretightening force of the upper pressing module on the thin plate 1, and the pretightening force with different strengths is selected for comprehensively considering the thin plates 1 with different thicknesses and the material of the thin plate 1 to ensure the pretightening force on the thin plate 1.
As shown in fig. 16, a guide housing 52 is fixedly mounted at each of the four corners of the upper side of the chassis 5, each guide housing 52 has a second sliding groove 56 therein, and an annular groove 55 is formed at one side of the second sliding groove 56, as shown in fig. 9, four mounting sliders 42 are slidably mounted in the corresponding guide housing 52 through the corresponding second sliding groove 56; a guiding ring 41 is fixedly arranged on each of the four adjusting screws 40, and the four adjusting screws 40 are arranged in the four guiding shells 52 through the rotating matching of the guiding rings 41 on the four adjusting screws and the four annular grooves 55 on the four guiding shells 52.
The guide ring 41 plays a role in limiting the sliding of the adjusting screw 40, so that the adjusting screw 40 can only rotate but cannot slide in the rotating process, and the rotation of the transmission screw 35 can smoothly drive the mounting slide block 42 to slide.
As shown in fig. 10, four of the adjusting screws 40 are respectively fixedly provided with a fourth gear 59, three gear shafts 58 are respectively arranged on the upper side of the chassis 5 through a plurality of fixed supports 60, two of the fourth gears 59 are respectively symmetrically arranged on the three gear shafts 58, and the fourth gears 59 arranged on the three gear shafts 58 are respectively meshed with the fourth gears 59 arranged on the four adjusting screws 40 in a one-to-one correspondence manner; the four adjusting screws 40 are synchronously connected through a fourth gear 59; a rocker 57 is fixedly mounted on one of the four adjusting screws 40. The synchronism of the rotation of the four adjusting screws 40 is ensured through the transmission of the fourth gear 59, and the rocker 57 needs to be rotated during adjustment, so that the rocker 57 drives the corresponding adjusting screw 40 to rotate, and the four adjusting screws 40 can be driven to rotate simultaneously.
As shown in fig. 14, four motors 48 mounted on the four lower sliders 46 are respectively mounted on the corresponding lower sliders 46 through a motor support 47.
As shown in fig. 16, four trapezoidal guide grooves 53 are formed on the upper side of the bottom frame 5, each two of the four trapezoidal guide grooves 53 form a group, two trapezoidal guide grooves 53 in the same group are symmetrical to each other, and two adjacent trapezoidal guide grooves 53 in the four trapezoidal guide grooves 53 are vertically distributed at 90 degrees; the four lower sliding blocks 46 are respectively provided with a trapezoidal guide block 50 at the lower side, and the four lower sliding blocks 46 are arranged at the upper side of the chassis 5 through the sliding fit of the trapezoidal guide blocks 50 and the four trapezoidal guide grooves 53 thereon.
As shown in fig. 15, the base frame 5 is provided with a reinforcing rib 61; the strength of the chassis 5 is reinforced.
The specific working process is as follows: when the clamp designed by the invention is used, when the thin plate 1 is installed, four round holes are firstly formed in four corners of the thin plate 1, the upper pressing module is detached from the lower pressing module, the upper end of the installation sliding sleeve 14 is contacted with the upper end surface of the installation groove 24 formed in the installation sleeve 13 through rotating the adjusting rod, and the installation sliding rod 15 is positioned at the uppermost side; then, the four circular holes are nested and clamped on the four pull rods 43 in the four tensioning modules 7, then the rocker 57 is rotated to drive the four adjusting screws 40 to rotate, the four adjusting screws 40 rotate to drive the corresponding mounting sliding blocks 42 to slide, the four mounting sliding blocks 42 slide to drive the four pull rods 43 to slide, the four corners of the thin plate 1 are tensioned, and then the upper sides of the four corners of the thin plate 1 are pressed and fixed through the pressing plates 39 through bolts and the pressing plates 39; after the thin plate 1 is fixed by the four tensioning modules 7, the lower end surface of the thin plate 1 is in pressing contact with the pressing wheels 18 arranged on the four lower mounting blocks 44, and the pressing wheels 18 arranged on the four lower mounting blocks 44 play a role in supporting the lower end surface of a processing area of the thin plate 1; then, the four upper sliders 11 are fixed on the upper sides of the four lower sliders 46 through bolts, and then the four driving rods 31 are sequentially driven to rotate, the four driving rods 31 rotate to drive the corresponding first gears 32 to rotate, the first gears 32 rotate to drive the corresponding second gears 33 to rotate, the second gears 33 rotate to drive the corresponding transmission screws 35 to rotate, as the installation sliding sleeve 14 is installed in the installation sleeve 13 through the matching of the first guide sliders 30 and the first guide sliding grooves 25, and the transmission screws 35 are limited to slide, when the transmission screws 35 rotate, the transmission screws 35 rotate to drive the installation sliding sleeve 14 to move downwards, the installation sliding sleeve 14 moves downwards to drive the installation sliding rod 15 to move downwards through the corresponding return springs 36, the installation sliding rod 15 moves downwards to drive the installation plate 17 installed at the lower side and the pinch rollers 18 installed on the installation plate 17 to move downwards, and when the pinch rollers 18 move downwards to contact with the upper end face of the thin plate 1, the pressing wheel 18 stops moving downwards, at the moment, the mounting sliding sleeve 14 moves downwards to extrude the return spring 36, so that the return spring 36 is compressed, and pretightening force is provided for the thin plate 1 through the compression of the return spring 36 to ensure the pressing force of the thin plate 1.
In the machining process, the four motors 48 are controlled to drive the four third gears 49 to rotate according to the machining track, the four third gears 49 rotate under the action of the corresponding racks 54 to control the four lower sliding blocks 46 to slide, the four lower sliding blocks 46 slide to drive the four lower mounting blocks 44 to slide along with the machining track through the corresponding second guide sliding rods 51, and the pressing wheels 18 mounted on the four lower mounting blocks 44 play a supporting role on the lower end face of the machining area of the thin plate 1 in the sliding process.
Claims (10)
1. The utility model provides a sheet metal anchor clamps for numerical control machining center which characterized in that: the device comprises an underframe, an upper clamping module, a tensioning module and a lower clamping module, wherein the underframe is fixedly arranged on the upper side of a machining center workbench through bolts; four corners of the bottom frame are respectively provided with a tensioning module which can tension four corners of the thin plate; an upper clamping module and a lower clamping module which play a clamping role on the upper part and the lower part of a thin plate processing area are distributed and mounted on the upper side and the lower part of the upper side of the bottom frame;
the tensioning module comprises a pressing plate, an adjusting screw rod, a mounting sliding block and a pull rod, wherein the mounting sliding block is slidably mounted on the upper side of the bottom frame, and the lower end of the pull rod is fixedly mounted on the upper side of one end of the mounting sliding block; the pressing plate is arranged on the upper side of the mounting sliding block through a screw rod, and the adjusting screw rod is rotatably arranged on the upper side of the bottom frame and is in threaded fit with the mounting sliding block;
the four corners of the thin plate are respectively provided with a circular hole, the thin plate is arranged on the four mounting sliding blocks through the matching of the four circular holes and four pull rods in the four tensioning modules, and the upper sides of the four corners of the thin plate are tightly pressed through the four pressing plates;
the lower clamping module comprises lower sliding blocks, second guide sliding rods, lower mounting blocks and pressing wheels, wherein the four lower sliding blocks are symmetrically arranged on the upper side of the bottom frame in a sliding mode in a group-by-group mode, and the sliding tracks of two adjacent lower sliding blocks are vertically distributed in the same plane at an angle of 90 degrees; two second guide slide bars are symmetrically arranged between two symmetrical lower slide blocks, and four second guide slide bars arranged on two groups of lower slide blocks are distributed in a staggered manner from top to bottom in pairs; the four lower mounting blocks are respectively slidably mounted on the four second guide slide bars, and each lower mounting block corresponds to two second guide slide bars which are staggered up and down and project to form 90 degrees; a plurality of press wheels are uniformly arranged on the upper sides of the four lower mounting blocks in a rolling manner, the press wheels are spherical bodies, and the press wheels are matched with the lower end surfaces of the thin plates;
four lower sliding blocks in the four lower clamping modules are respectively provided with a motor, four third gears are respectively arranged on output shafts of the four motors, four racks are symmetrically and fixedly arranged on the upper side of the bottom frame in a pairwise mode, two adjacent racks are vertically distributed in the same plane at an angle of 90 degrees, and the four racks are meshed with the four third gears in a one-to-one corresponding mode;
the upper clamping module comprises a first guide sliding rod, a pressing unit and upper sliding blocks, wherein the four upper sliding blocks are fixedly arranged on the upper sides of the four lower sliding blocks in a one-to-one correspondence manner through bolts; two first guide slide bars are symmetrically arranged between two upper slide blocks which are symmetrical to each other, and four first guide slide bars arranged on the four upper slide blocks are arranged in a group in a staggered manner from top to bottom; the four pressing units are arranged on the four first guide sliding rods;
the pressing unit comprises an upper mounting block, a mounting sleeve, a mounting sliding sleeve, mounting sliding rods, a spherical hinge mechanism, a mounting disc and a pressing wheel, wherein the upper mounting block is slidably mounted on two first guide sliding rods which are staggered up and down and project into an angle of 90 degrees in four first guide sliding rods; the lower end of the transmission screw is in threaded fit with the mounting sliding sleeve; the driving rod is arranged on the mounting sleeve and is in transmission connection with the transmission screw rod through a gear; the upper end of the installation sliding rod is slidably installed on the inner side of the lower end of the installation sliding sleeve, and a return spring is installed between the upper end of the installation sliding rod and the inner end face of the installation sliding sleeve; the mounting disc is hinged to the lower side of the mounting sliding rod through a spherical hinge mechanism, a plurality of pressing wheels are arranged on the lower side of the mounting disc in a rolling mode, the pressing wheels are spherical bodies, and the pressing wheels are matched with the upper end face of the thin plate.
2. The sheet clamp for the numerical control machining center according to claim 1, characterized in that: the upper mounting block is provided with two first guide holes for the two corresponding first guide slide bars to pass through, and the lower mounting block is provided with two second guide holes for the two corresponding second guide slide bars to pass through.
3. The sheet clamp for the numerical control machining center according to claim 1, characterized in that: the lower end of the mounting sleeve is provided with a mounting groove, the upper side of the mounting groove is provided with a sliding round hole, and the round surface of the sliding round hole is provided with a guide ring groove; the upper side of the sliding round hole is provided with an installation cavity, and the round surface of the installation cavity is provided with a shaft hole;
the driving rod is rotatably installed on the installation sleeve through the shaft hole, the first gear is fixedly installed on the driving rod and is located in the installation cavity of the installation sleeve, the lower end of the transmission screw rod is provided with external threads, the transmission screw rod is provided with a guide ring block, and the transmission screw rod is installed in the installation sleeve through the rotary matching of the guide ring block and the guide ring groove; the second gear is fixedly arranged at the upper end of the transmission screw rod and is meshed with the first gear; the upper end surface of the mounting sliding sleeve is provided with a threaded hole, and the mounting sliding sleeve is in threaded fit with the external thread at the lower end of the transmission screw rod through the threaded hole.
4. The sheet clamp for a numerical control machining center according to claim 3, characterized in that: two first guide sliding chutes are symmetrically formed in the circular surface of the mounting groove, two first guide sliding blocks are symmetrically mounted on the outer circular surface of the upper end of the mounting sliding sleeve, and the two first guide sliding blocks are in sliding fit with the two first guide sliding chutes;
a first sliding groove is formed in the lower side of a threaded hole formed in the installation sliding sleeve, two second guide sliding grooves are symmetrically formed in the circular surface of the first sliding groove, two second guide sliding blocks are symmetrically installed on the outer circular surface of the upper end of the installation sliding rod, and the two second guide sliding blocks are in sliding fit with the two second guide sliding grooves.
5. The sheet clamp for the numerical control machining center according to claim 4, wherein: a plurality of marking grooves are uniformly formed in the upper portion and the lower portion of the outer circular surface of the mounting groove, one marking block is mounted on one of the two second guide sliding blocks, and the marking block penetrates through the mounting sliding sleeve to be matched with the marking grooves formed in the outer circular surface.
6. The sheet clamp for the numerical control machining center according to claim 1, characterized in that: the four corners of the upper side of the underframe are respectively and fixedly provided with a guide shell, each guide shell is internally provided with a second sliding groove, one side of each second sliding groove is provided with an annular groove, and the four mounting sliding blocks are slidably mounted in the corresponding guide shells through the corresponding second sliding grooves; and the four adjusting screws are arranged in the four guide shells through the guide circular rings on the four adjusting screws and the four annular grooves on the four guide shells in a rotating fit manner.
7. The sheet clamp for the numerical control machining center according to claim 1, characterized in that: the four adjusting screws are respectively and fixedly provided with a fourth gear, the three gear shafts are respectively arranged on the upper side of the underframe through a plurality of fixed supports, the three gear shafts are respectively and symmetrically provided with two fourth gears, and the fourth gears arranged on the three gear shafts are correspondingly and respectively meshed with the fourth gears arranged on the four adjusting screws; the four adjusting screws are synchronously connected through a fourth gear; and one of the four adjusting screws is fixedly provided with a rocker.
8. The sheet clamp for the numerical control machining center according to claim 1, characterized in that: the four motors arranged on the four lower sliding blocks are respectively supported and arranged on the corresponding lower sliding blocks through one motor.
9. The sheet clamp for the numerical control machining center according to claim 1, characterized in that: the upper side of the underframe is provided with four trapezoidal guide grooves, every two of the four trapezoidal guide grooves are in a group, two trapezoidal guide grooves in the same group are mutually symmetrical, and two adjacent trapezoidal guide grooves in the four trapezoidal guide grooves are vertically distributed at 90 degrees; the lower sides of the four lower sliding blocks are respectively provided with a trapezoidal guide block, and the four lower sliding blocks are arranged on the upper side of the bottom frame through the sliding fit of the trapezoidal guide blocks and the four trapezoidal guide grooves on the four lower sliding blocks.
10. The sheet clamp for the numerical control machining center according to claim 1, characterized in that: the chassis is provided with a reinforcing rib.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010873110.4A CN112045229B (en) | 2020-08-26 | 2020-08-26 | Sheet clamp for numerical control machining center |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010873110.4A CN112045229B (en) | 2020-08-26 | 2020-08-26 | Sheet clamp for numerical control machining center |
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| CN112045229A CN112045229A (en) | 2020-12-08 |
| CN112045229B true CN112045229B (en) | 2021-12-31 |
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| CN112847195B (en) * | 2021-01-05 | 2023-01-17 | 湖南中部智能制造有限公司 | Adjustable clamping device for steel processing |
| ES2922328A1 (en) * | 2021-03-03 | 2022-09-13 | M Torres Disenos Ind S A Unipersonal | Device for machining a panel (Machine-translation by Google Translate, not legally binding) |
| CN113500548A (en) * | 2021-07-12 | 2021-10-15 | 安徽润物机电设备有限公司 | Mahjong table assembling and positioning tool and working method thereof |
| CN115194513B (en) * | 2022-07-30 | 2023-04-07 | 东莞市腾信精密仪器有限公司 | Full-automatic numerical control milling device |
| CN116532701B (en) * | 2023-07-07 | 2023-09-05 | 山东隆基步德威制动钳有限公司 | Processing device and processing method for special groove type pressure relief sheet |
| CN117484623B (en) * | 2023-12-29 | 2024-04-02 | 湘潭永达机械制造股份有限公司 | Automatic processing equipment of joggle mechanism at joint of round tenon standard joint |
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Effective date of registration: 20211214 Address after: 361000 West 31-7, aoguan community, Haicang street, Haicang District, Xiamen City, Fujian Province Applicant after: Xiamen xinhuiya industry and Trade Co.,Ltd. Address before: 430000 room 2404, unit 1, building 5, No. 50, Baisha 4th Road, Hongshan District, Wuhan City, Hubei Province Applicant before: Yu Ting |
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