CN111451796B - Fast-assembling anchor clamps - Google Patents
Fast-assembling anchor clamps Download PDFInfo
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- CN111451796B CN111451796B CN202010418652.2A CN202010418652A CN111451796B CN 111451796 B CN111451796 B CN 111451796B CN 202010418652 A CN202010418652 A CN 202010418652A CN 111451796 B CN111451796 B CN 111451796B
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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
Abstract
The invention belongs to the technical field of clamps, and particularly relates to a quick-mounting clamp which comprises an I-shaped mounting disc, an inner clamping mechanism, an outer clamping mechanism, a base and a motor, wherein a limiting block is designed to always keep an inclined state between the limiting block and a corresponding arc-shaped rack under the action of two plate springs and lean towards one side provided with a first clamping arc plate, so that the arc-shaped rack is ensured to provide a thrust force far away from a telescopic outer sleeve for a corresponding telescopic inner rod after moving upwards, and the clamping force of the first clamping arc plate arranged on the telescopic inner rod on the inner wall surface of a workpiece is improved; according to the invention, the three arc-shaped racks can be limited and locked by the designed self-locking function of the first worm and the first worm wheel, so that the three arc-shaped racks are prevented from being pressed and moving reversely to influence the clamping of the inner clamping mechanism on the workpiece. The invention can play a role in limiting and locking the three racks by the designed self-locking function of the second worm and the second worm wheel, and prevents the three racks from being pressed to move reversely to influence the clamping of the outer clamping mechanism on the workpiece.
Description
Technical Field
The invention belongs to the technical field of clamps, and particularly relates to a quick-mounting clamp.
Background
A machine tool clamp is a device used for clamping a workpiece on a machine tool. The function of which is to position the workpiece so that it obtains the correct position with respect to the machine tool and the tool and to clamp the workpiece reliably.
For some cylindrical workpieces, particularly cylindrical workpieces with relatively large diameters, the cylindrical workpieces are generally machined by a vertical lathe; the following problems exist during clamping:
firstly, in the clamping process, a workpiece is not easy to clamp and is easy to deform in the clamping process.
Secondly, the clamping process of the cylindrical workpiece is relatively slow and cannot be rapidly clamped.
The invention designs a clamp which can realize quick clamping and simultaneously prevent a workpiece from being stressed and deformed in the clamping process and is used for a vertical lathe.
The invention designs a quick-assembling clamp to solve the problems.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention discloses a quick-mounting clamp which is realized by adopting the following technical scheme.
The utility model provides a fast-assembling anchor clamps which characterized in that: the machine tool comprises an I-shaped mounting disc, an inner clamping mechanism, an outer clamping mechanism, a base and a motor, wherein the lower end of the base is fixedly mounted on a frame body of the machine tool, and the motor is mounted on the inner side of the base; the I-shaped mounting disc is mounted on an output shaft of the motor and is in rotating fit with the base; the inner clamping mechanism and the outer clamping mechanism are mounted on the I-shaped mounting plate.
The inner clamping mechanism consists of three inner clamping units which are uniformly distributed in the circumferential direction; the inner clamping unit consists of a telescopic structure consisting of a telescopic outer sleeve and a telescopic inner rod and a first clamping arc plate arranged on the telescopic inner rod; a first return spring is arranged between the telescopic outer sleeve and the telescopic inner rod; two articulated shafts are slidably mounted on two sides of one end of the telescopic outer sleeve, and the telescopic outer sleeve is hinged to the I-shaped mounting plate through the two articulated shafts; a second return spring is arranged between the two articulated shafts and the telescopic outer sleeve; the lower end surface of the telescopic inner rod is provided with teeth; one end of the telescopic outer sleeve, which is provided with the articulated shaft, is provided with a straight surface; three arc-shaped racks are circumferentially and uniformly arranged on the inner side of the I-shaped mounting disc in a sliding manner, and the upper ends of the three arc-shaped racks are respectively provided with a limiting block in a swinging manner; two plate springs are respectively arranged between three limiting blocks at the upper ends of the three arc-shaped racks and the corresponding arc-shaped racks; the upper ends of three limiting blocks at the upper ends of the three arc-shaped racks penetrate out of the upper end surface of the I-shaped mounting plate and are matched with teeth on the three telescopic inner rods; the limiting block is always kept in an inclined state between the two plate springs and the corresponding arc-shaped racks and is deviated to one side provided with the first clamping arc plate.
The inner side of the I-shaped mounting disc is also provided with three first worm wheels and a first worm for controlling the three arc-shaped racks to slide, and the three first worm wheels are in one-to-one corresponding transmission connection with the three arc-shaped racks through gears respectively; and the I-shaped mounting disc is also provided with an adjusting rod for controlling the first worm wheel to rotate.
The outer clamping mechanism consists of three outer clamping units which are uniformly distributed in the circumferential direction; the outer clamping unit consists of a rack and a second clamping arc plate, the rack is slidably mounted on the I-shaped mounting disc, and the second clamping arc plate is fixedly mounted at one end of the rack, which is positioned at the outer side of the I-shaped mounting disc, through a connecting plate; and a third return spring is arranged between the second clamping arc plate and the I-shaped mounting disc.
An adjusting rotating shaft is installed on the inner side of the I-shaped installation disc, an eighth gear is installed at the upper end of the adjusting rotating shaft, a second worm wheel is installed at the lower end of the adjusting rotating shaft through an overrunning clutch, a second worm is installed on the I-shaped installation disc, and the second worm is meshed with the second worm wheel.
As a further improvement of the technology, the upper end of the base is fixedly provided with a fixed sleeve; the lower end of the I-shaped mounting disc is rotatably mounted in the fixed sleeve; the output shaft of the motor is connected with the lower end of the I-shaped mounting disc through a coupler.
As a further improvement of the technology, the upper end of the I-shaped mounting plate is fixedly provided with a mounting column; three groups of hinged support lugs are uniformly arranged on the outer circular surface of the mounting column in the circumferential direction.
The inner sides of one ends of the three telescopic outer sleeves are respectively provided with a sliding block in a sliding manner, and a second reset spring is arranged between the sliding block and the telescopic outer sleeve; six articulated shafts arranged on the three telescopic outer sleeves are respectively and fixedly arranged on two sides of the three sliding blocks; two ends of the articulated shaft penetrate through two sides of the telescopic coat; the three telescopic outer sleeves are hinged and arranged on the outer circular surface of the mounting column through hinge shafts arranged on the inner side sliding blocks of the three telescopic outer sleeves; one end of the telescopic inner rod is slidably mounted on the inner side of the telescopic outer sleeve, and two ends of the first reset spring are respectively mounted on one end of the telescopic inner rod, which is located on the inner side of the telescopic outer sleeve, and the inner end face of the telescopic outer sleeve.
As a further improvement of the technology, the inner side of the I-shaped mounting plate is provided with a first mounting groove, three fifth mounting grooves are uniformly arranged on the inner circular surface of the upper end of the first mounting groove in the circumferential direction, and one side of each of the three fifth mounting grooves is provided with an arc-shaped groove penetrating out of the upper end surface of the I-shaped mounting plate; the first worm is rotatably arranged in the first mounting groove, and three first worm wheels in the I-shaped mounting disc are respectively rotatably arranged in three fifth mounting grooves; three arc-shaped racks in the I-shaped mounting disc are respectively and slidably mounted in the three arc-shaped grooves, and the upper ends of the three arc-shaped racks penetrate through the three arc-shaped grooves to be matched with the corresponding telescopic inner rod.
As a further improvement of the present technology, a third mounting groove is formed on the lower side of the first mounting groove, and a fourth mounting groove is formed on the upper side of the third mounting groove; the first gear is fixedly arranged at the lower end of the first worm and is positioned in the third mounting groove; the second gear is rotatably arranged in the fourth mounting groove and is meshed with the first gear; the second gear is fixedly connected with the adjusting rod.
As a further improvement of the technology, the inner side of the I-shaped mounting plate is provided with a second mounting groove and a ninth mounting groove, and a first balancing weight for balancing the weight of a second gear and an adjusting rod is mounted in the second mounting groove; and a second balancing weight for balancing the second worm is arranged in the ninth mounting groove.
As a further improvement of the technology, the three first worm gears and the three arc-shaped racks which are arranged in the three fifth mounting grooves and the three arc-shaped grooves are completely identical in mounting structure.
For the structure arranged between any one group of first worm gears and the arc-shaped rack, the fourth rotating shaft is rotatably arranged in the corresponding fifth mounting groove, the first worm gears are fixedly arranged at one end of the fourth rotating shaft, and the seventh gear is fixedly arranged at the other end of the fourth rotating shaft; one end of the third rotating shaft is fixedly arranged in the corresponding fifth mounting groove, the sixth gear is rotatably arranged on the third rotating shaft, and the sixth gear is meshed with the seventh gear; the second rotating shaft is rotatably arranged in the corresponding fifth mounting groove, the fourth gear is fixedly arranged at one end of the second rotating shaft, and the fourth gear is meshed with the sixth gear; the fifth gear is fixedly arranged at the other end of the second rotating shaft; one end of the first rotating shaft is fixedly arranged in the corresponding fifth mounting groove, the third gear is rotatably arranged at one end of the first rotating shaft, and the third gear is meshed with the fifth gear; the third gear is meshed with the corresponding arc-shaped rack.
As a further improvement of the present technology, a sixth mounting groove is formed on the upper side of the third mounting groove formed on the i-shaped mounting plate, and three rack mounting holes penetrating through the i-shaped mounting plate are uniformly formed on the inner circumferential surface of the sixth mounting groove in the circumferential direction; a seventh mounting groove is formed in the lower side of the third mounting groove, and an eighth mounting groove is formed in one side of the seventh mounting groove; the adjusting rotating shaft is nested and rotatably arranged on the inner side of the first worm, and the three racks are slidably arranged in the three rack mounting holes; the upper end of the adjusting rotating shaft is positioned in the sixth mounting groove, and the eighth gear is fixedly mounted at the upper end of the adjusting rotating shaft; the eighth gear is meshed with the three racks; the second worm wheel is installed at the lower end of the adjusting rotating shaft through the overrunning clutch and located in the seventh installation groove, the second worm is rotatably installed in the eighth installation groove, and the second worm is meshed with the second worm wheel.
As a further improvement of the technology, three avoiding grooves for preventing the three telescopic outer sleeves from interfering with the I-shaped mounting disc in the swinging process are uniformly formed on the upper end surface of the I-shaped mounting disc in the circumferential direction.
As a further improvement of the technology, the inner side of one end of the telescopic jacket is provided with a first sliding chute, two sides of the first sliding chute are provided with a through second sliding chute, the sliding block is slidably arranged in the first sliding chute, and a hinge shaft arranged on the sliding block penetrates through the second sliding chutes on two sides of the first sliding chute and is hinged with a hinge support lug arranged on the I-shaped mounting disc.
The inner side of the telescopic outer sleeve is symmetrically provided with two guide grooves, one end of the telescopic inner rod is symmetrically provided with two guide blocks, and the telescopic inner rod is slidably arranged in the telescopic outer sleeve through the matching of the guide blocks and the guide grooves.
Compared with the traditional clamp technology, the clamp has the following beneficial effects:
1. when the clamp is used for clamping a workpiece, the workpiece is sleeved on the three first clamping arc plates which are distributed in an inclined mode, and then the workpiece is pushed, so that the workpiece drives the three groups of telescopic structures to swing; when the three groups of telescopic structures swing to be in a horizontal state with the upper end surface of the I-shaped mounting disc; the adjusting rod is rotated, the adjusting rod drives the first worm and the first worm wheel to drive the three arc-shaped racks to move upwards, and the arc-shaped racks after moving upwards limit the stretching and swinging of the three groups of telescopic structures; namely, the inner wall of the workpiece is fixed; then, the three outer clamping arc plates are manually pressed to approach the workpiece, after the three outer clamping arc plates are contacted with the outer wall surface of the workpiece, a second worm is manually rotated through an auxiliary tool, the second worm drives a second worm wheel to rotate, the second worm wheel rotates and drives an adjusting rotating shaft to rotate through an overrunning clutch, the adjusting rotating shaft rotates and drives an eighth gear to rotate, the eighth gear rotates and drives three racks to slide, and the three racks slide and drive the three second clamping arc plates arranged on the three racks to slide to clamp the outer wall of the workpiece; after the workpiece is installed, the clamp can realize rapid clamping of the workpiece; meanwhile, the inner wall and the outer wall of the workpiece are fixed at the same time, so that the workpiece is not easy to deform in the clamping process.
2. According to the invention, the limiting block is always kept in an inclined state with the corresponding arc-shaped rack under the action of the two plate springs and is biased to one side provided with the first clamping arc plate, so that the arc-shaped rack is ensured to provide a thrust far away from the telescopic outer sleeve for the corresponding telescopic inner rod after moving upwards, and the clamping force of the first clamping arc plate arranged on the telescopic inner rod on the inner wall surface of a workpiece is improved.
3. According to the invention, the three arc-shaped racks can be limited and locked by the designed self-locking function of the first worm and the first worm wheel, so that the three arc-shaped racks are prevented from being pressed and moving reversely to influence the clamping of the inner clamping mechanism on the workpiece. The invention can play a role in limiting and locking the three racks by the designed self-locking function of the second worm and the second worm wheel, and prevents the three racks from being pressed to move reversely to influence the clamping of the outer clamping mechanism on the workpiece.
Drawings
Fig. 1 is an external view of an entire part.
Fig. 2 is a schematic view of the overall component distribution.
FIG. 3 is a schematic view of the arrangement of the inner and outer clamping mechanisms.
FIG. 4 is a schematic view of the installation of the inner and outer clamping mechanisms.
Fig. 5 is an external view of the inner clamping unit.
Fig. 6 is a schematic structural view of an inner clamping unit.
Fig. 7 is a schematic external view of the drum-type mounting plate.
Fig. 8 is a schematic view of the outer clamping unit distribution.
Fig. 9 is a schematic view of the outer clamping unit installation.
Fig. 10 is a schematic structural view of an outer clamping mechanism.
Fig. 11 is a schematic structural view of an outer clamping unit.
Fig. 12 is a schematic view of the first and second worm mounting.
Fig. 13 is a schematic view of the first and second gears mating.
Fig. 14 is a schematic view of an arcuate rack and first worm gear.
Fig. 15 is a schematic view of stopper installation.
Number designation in the figures: 1. an i-shaped mounting plate; 2. an inner clamping mechanism; 3. an outer clamping mechanism; 4. a base; 5. fixing a sleeve; 6. a coupling; 7. a motor; 8. a first weight block; 9. a first worm; 10. an arc-shaped rack; 11. a telescopic outer sleeve; 12. a telescopic inner rod; 13. a first clamping arc plate; 14. hinging a shaft; 15. a first return spring; 16. a slider; 17. a second return spring; 18. a first chute; 19. a second chute; 20. a guide groove; 21. a square opening; 22. a guide block; 23. an eighth gear; 24. a connecting plate; 25. a second clamping arc plate; 27. a third return spring; 28. a rack; 30. an arc-shaped slot; 31. a hinged lug; 32. a rack mounting hole; 33. a sixth mounting groove; 35. a first mounting groove; 36. a second mounting groove; 37. a third mounting groove; 38. a fourth mounting groove; 39. a fifth mounting groove; 40. a limiting block; 41. a first gear; 42. adjusting a rod; 43. a second gear; 44. a third gear; 45. a first rotating shaft; 46. a second rotating shaft; 47. a fourth gear; 48. a fifth gear; 49. a sixth gear; 50. a seventh gear; 51. a third rotating shaft; 52. a fourth rotating shaft; 53. a first worm gear; 54. a plate spring; 55. a second counterweight block; 56. adjusting the rotating shaft; 57. an eighth mounting groove; 58. a seventh mounting groove; 59. a ninth mounting groove; 60. an overrunning clutch; 61. a second worm gear; 62. a second worm; 63. an inner clamping unit; 64. an outer clamping unit; 65. mounting a column; 66. an avoidance groove; 67. a straight surface; 68. and (5) a workpiece.
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 clamping device comprises an i-shaped mounting plate 1, an inner clamping mechanism 2, an outer clamping mechanism 3, a base 4 and a motor 7, wherein the lower end of the base 4 is fixedly mounted on a frame body of a machine tool, and the motor 7 is mounted on the inner side of the base 4 as shown in fig. 1; the I-shaped mounting disc 1 is mounted on an output shaft of the motor 7, and the I-shaped mounting disc 1 is in rotating fit with the base 4; as shown in fig. 3 and 4, the inner clamping mechanism 2 and the outer clamping mechanism 3 are mounted on the drum-shaped mounting plate 1.
As shown in fig. 3 and 4, the inner clamping mechanism 2 is composed of three inner clamping units 63 uniformly distributed in the circumferential direction; as shown in fig. 5 and 6, the inner clamping unit 63 is composed of a telescopic structure composed of a telescopic outer sleeve 11 and a telescopic inner rod 12, and a first clamping arc plate 13 mounted on the telescopic inner rod 12; a first return spring 15 is arranged between the telescopic outer sleeve 11 and the telescopic inner rod 12; two articulated shafts 14 are slidably mounted on two sides of one end of the telescopic outer sleeve 11, and the telescopic outer sleeve 11 is articulated on the I-shaped mounting disc 1 through the two articulated shafts 14; a second return spring 17 is arranged between the two articulated shafts 14 and the telescopic jacket 11; as shown in fig. 6, the lower end surface of the telescopic inner rod 12 has teeth; the end of the telescopic jacket 11, to which the hinge shaft 14 is attached, has a straight surface 67. When the three groups of telescopic structures swing to be in a horizontal state with the upper end face of the I-shaped mounting disc 1, the straight faces 67 on the three telescopic jackets 11 are in contact with the mounting columns 65, and the mounting columns 65 are enabled to limit the swing of the three telescopic jackets 11 through the straight faces 67.
As shown in fig. 4 and 14, three arc-shaped racks 10 are circumferentially and uniformly slidably mounted on the inner side of the i-shaped mounting plate 1, and as shown in fig. 15, the upper ends of the three arc-shaped racks 10 are respectively provided with a limiting block 40 in a swinging manner; two plate springs 54 are respectively arranged between the three limiting blocks 40 at the upper ends of the three arc-shaped racks 10 and the corresponding arc-shaped racks 10; the upper ends of three limiting blocks 40 at the upper ends of the three arc-shaped racks 10 penetrate out of the upper end surface of the I-shaped mounting disc 1 and are matched with teeth on the three telescopic inner rods 12; the limiting block 40 is always kept in an inclined state between the two plate springs 54 and the corresponding arc-shaped rack 10 and is biased to one side where the first clamping arc plate 13 is installed.
The reason why the limiting block 40 always keeps an inclined state with the corresponding arc-shaped rack 10 and is biased to one side provided with the first clamping arc plate 13 under the action of the two plate springs 54 is to ensure that the arc-shaped rack 10 provides a thrust force far away from the telescopic jacket 11 for the corresponding telescopic inner rod 12 after moving upwards, and improve the clamping force of the first clamping arc plate 13 arranged on the telescopic inner rod 12 on the inner wall surface of the workpiece 68.
As shown in fig. 4 and 12, three first worm gears 53 and a first worm 9 for controlling the three arc-shaped racks 10 to slide are further mounted on the inner side of the i-shaped mounting plate 1, and the three first worm gears 53 are in one-to-one transmission connection with the three arc-shaped racks 10 through gears respectively; the h-shaped mounting plate 1 is also provided with an adjusting rod 42 for controlling the first worm wheel 53 to rotate.
As shown in fig. 8, 9 and 10, the outer clamping mechanism 3 is composed of three outer clamping units 64 which are uniformly distributed in the circumferential direction; as shown in fig. 11, the outer clamping unit 64 is composed of a rack 28 and a second clamping arc plate 25, the rack 28 is slidably mounted on the drum-shaped mounting plate 1, and the second clamping arc plate 25 is fixedly mounted on one end of the rack 28 located outside the drum-shaped mounting plate 1 through a connecting plate 24; a third return spring 27 is mounted between the second clamping arc 25 and the drum-shaped mounting plate 1.
As shown in fig. 12, an adjusting rotating shaft 56 is installed inside the drum-shaped mounting plate 1, an eighth gear 23 is installed at the upper end of the adjusting rotating shaft 56, a second worm wheel 61 is installed at the lower end of the adjusting rotating shaft 56 through an overrunning clutch 60, a second worm 62 is installed on the drum-shaped mounting plate 1, and the second worm 62 is engaged with the second worm wheel 61.
As shown in fig. 1 and 2, a fixing sleeve 5 is fixedly mounted at the upper end of the base 4; the lower end of the I-shaped mounting disc 1 is rotatably arranged in the fixed sleeve 5; the output shaft of the motor 7 is connected with the lower end of the I-shaped mounting disc 1 through a coupler 6. And controlling the motor 7 to work, wherein the motor 7 drives the I-shaped mounting disc 1 to rotate through the coupler 6, and the I-shaped mounting disc 1 rotates to drive the workpiece 68 to rotate through the inner clamping mechanism 2 and the outer clamping mechanism 3 which are arranged on the I-shaped mounting disc 1. The present invention contemplates that the mounting sleeve 5 functions to provide a relative rotational component for rotation between the i-disk 1 and the base 4.
As shown in fig. 7, the mounting post 65 is fixedly mounted on the upper end of the h-shaped mounting plate 1; three sets of hinge lugs 31 are circumferentially and uniformly mounted on the outer circumferential surface of the mounting post 65.
As shown in fig. 5 and 6, the inner sides of one ends of the three telescopic jackets 11 are respectively provided with a sliding block 16 in a sliding manner, and a second return spring 17 is arranged between the sliding block 16 and the telescopic jackets 11; six articulated shafts 14 arranged on the three telescopic jackets 11 are respectively and fixedly arranged at two sides of three sliding blocks 16; two ends of the hinge shaft 14 penetrate through two sides of the telescopic jacket 11; the three telescopic outer sleeves 11 are hinged and installed on the outer circular surface of the installation column 65 through hinge shafts 14 installed on inner sliders 16 of the three telescopic outer sleeves; one end of the telescopic inner rod 12 is slidably mounted inside the telescopic outer sleeve 11, and two ends of the first return spring 15 are respectively mounted on one end of the telescopic inner rod 12 inside the telescopic outer sleeve 11 and the inner end face of the telescopic outer sleeve 11.
As shown in fig. 7, the inner side of the i-shaped mounting plate 1 is provided with a first mounting groove 35, the inner circular surface of the upper end of the first mounting groove 35 is provided with three fifth mounting grooves 39 circumferentially and uniformly, and one side of each of the three fifth mounting grooves 39 is provided with an arc-shaped groove 30 penetrating through the upper end surface of the i-shaped mounting plate 1; the first worm 9 is rotatably mounted in the first mounting groove 35, and as shown in fig. 4, the three first worm gears 53 in the drum-shaped mounting tray 1 are rotatably mounted in the three fifth mounting grooves 39, respectively; the three arc-shaped racks 10 in the I-shaped mounting plate are respectively slidably mounted in the three arc-shaped slots 30, and the upper ends of the three arc-shaped racks 10 penetrate through the three arc-shaped slots 30 to be matched with the corresponding telescopic inner rod 12.
As shown in fig. 7, a third mounting groove 37 is formed at a lower side of the first mounting groove 35, and a fourth mounting groove 38 is formed at an upper side of the third mounting groove 37; as shown in fig. 4, the first gear 41 is fixedly installed at the lower end of the first worm 9 and is located in the third installation groove 37; the second gear 43 is rotatably installed in the fourth installation groove 38, and the second gear 43 is engaged with the first gear 41; the second gear 43 is fixedly connected to the adjustment lever 42.
As shown in fig. 7, the inner side of the i-shaped mounting plate 1 is provided with a second mounting groove 36 and a ninth mounting groove 59, and as shown in fig. 4, the second mounting groove 36 is internally provided with a first balancing weight 8 for balancing the weight of the second gear 43 and the adjusting rod 42; a second weight 55 balancing a second worm 62 is mounted in the ninth mounting groove 59. The effect of balancing weight guarantees that this anchor clamps focus is located the axis of 7 output shafts of motor all the time in the course of the work, guarantees the machining precision.
As shown in fig. 4 and 13, the three first worm gears 53 and the three arc-shaped racks 10 mounted in the three fifth mounting grooves 39 and the three arc-shaped grooves 30 have the same mounting structure.
As shown in fig. 14, for the structure in which any one set of the first worm wheel 53 and the arc-shaped rack 10 is installed, the fourth rotating shaft 52 is rotatably installed in the corresponding fifth installation groove 39, the first worm wheel 53 is fixedly installed at one end of the fourth rotating shaft 52, and the seventh gear 50 is fixedly installed at the other end of the fourth rotating shaft 52; one end of the third rotating shaft 51 is fixedly arranged in the corresponding fifth mounting groove 39, the sixth gear 49 is rotatably arranged on the third rotating shaft 51, and the sixth gear 49 is meshed with the seventh gear 50; the second rotating shaft 46 is rotatably installed in the corresponding fifth installation groove 39, the fourth gear 47 is fixedly installed at one end of the second rotating shaft 46, and the fourth gear 47 is meshed with the sixth gear 49; a fifth gear 48 is fixedly installed at the other end of the second rotating shaft 46; one end of the first rotating shaft 45 is fixedly arranged in the corresponding fifth mounting groove 39, the third gear 44 is rotatably arranged at one end of the first rotating shaft 45, and the third gear 44 is meshed with the fifth gear 48; the third gear 44 is engaged with the corresponding arc-shaped rack 10.
As shown in fig. 7, a sixth mounting groove 33 is formed on the upper side of the third mounting groove 37 formed on the i-shaped mounting plate 1, and three rack mounting holes 32 penetrating through the i-shaped mounting plate 1 are uniformly formed on the inner circumferential surface of the sixth mounting groove 33 in the circumferential direction; a seventh mounting groove 58 is formed at the lower side of the third mounting groove 37, and an eighth mounting groove 57 is formed at one side of the seventh mounting groove 58; as shown in fig. 12, the adjusting rotating shaft 56 is nested and rotatably installed inside the first worm 9, and the three racks 28 are slidably installed in the three rack installation holes 32; the upper end of the adjusting rotating shaft 56 is positioned in the sixth mounting groove 33, and the eighth gear 23 is fixedly mounted at the upper end of the adjusting rotating shaft 56; the eighth gear 23 meshes with three racks 28; a second worm wheel 61 is installed at the lower end of the adjusting rotary shaft 56 through an overrunning clutch 60 and is positioned in the seventh installation groove 58, a second worm 62 is rotatably installed in the eighth installation groove 57, and the second worm 62 is engaged with the second worm wheel 61.
As shown in fig. 4, three escape grooves 66 are uniformly formed in the upper end surface of the drum-shaped mounting plate 1 in the circumferential direction to prevent the three telescopic jackets 11 from interfering with the drum-shaped mounting plate 1 during the swing process.
As shown in fig. 6, the inner side of one end of the telescopic jacket 11 is provided with a first sliding groove 18, two sides of the first sliding groove 18 are provided with a second sliding groove 19, a sliding block 16 is slidably mounted in the first sliding groove 18, and a hinge shaft 14 mounted on the sliding block 16 penetrates through the second sliding groove 19 at two sides of the first sliding groove 18 and is hinged with a hinge support lug 31 mounted on the i-shaped mounting plate 1.
As shown in fig. 6, two guide grooves 20 are symmetrically formed inside the telescopic housing 11, two guide blocks 22 are symmetrically mounted at one end of the telescopic inner rod 12, and the telescopic inner rod 12 is slidably mounted in the telescopic housing 11 by the engagement of the guide blocks 22 and the guide grooves 20.
The clamp designed by the invention can be suitable for large-diameter cylindrical workpieces 68, and clamps with different sizes can be used according to the workpieces 68 with different sizes and diameters; the size of the clamp applicable workpiece 68 is determined by the degree to which the three sets of telescoping structures can be extended or shortened.
According to the invention, the three outer clamping arc plates can be manually pressed to approach the workpiece 68, the three outer clamping arc plates can drive the three racks 28 to slide in the adjusting process, the three racks 28 slide to drive the eighth gear 23 to rotate, the eighth gear 23 rotates to drive the adjusting rotating shaft 56 to rotate, but under the action of the overrunning clutch 60, the rotation of the adjusting rotating shaft 56 cannot influence the rotation of the second worm wheel 61, namely, the manual adjustment of the three outer clamping arc plates cannot be influenced by the self-locking function of the second worm wheel 61 and the worm, and meanwhile, when the adjustment is carried out through the second worm 62, the three outer clamping arc plates can still be acted through the overrunning clutch 60.
According to the invention, the three arc-shaped racks 10 can be limited and locked by the designed self-locking function of the first worm 9 and the first worm wheel 53, so that the three arc-shaped racks 10 are prevented from being pressed and moving reversely, and the clamping of the inner clamping mechanism 2 on the workpiece 68 is influenced. According to the invention, the three racks 28 can be limited and locked by the designed self-locking function of the second worm 62 and the second worm wheel 61, so that the three racks 28 are prevented from being pressed and moving reversely, and the clamping of the outer clamping mechanism 3 on the workpiece 68 is influenced.
The specific working process is as follows: when the clamp designed by the invention is used, when the workpiece 68 is not installed, included angles are formed between the three groups of telescopic structures consisting of the telescopic outer sleeve 11 and the telescopic inner rod 12 and the upper end surface of the I-shaped installation disc 1; in this state, the end of the three telescopic jackets 11 where the sliders 16 are mounted is pressed by the upper end face of the i-shaped mounting plate 1, the three sliders 16 are located at the middle positions of the three first sliding grooves 18 formed in the three telescopic jackets 11, and the three second return springs 17 are compressed; the first return spring 15 is in a pre-pressing state, and the telescopic inner rod 12 extends out to the maximum extent at the moment; the first clamping arc plates 13 mounted on the three telescopic inner rods 12 are distributed obliquely relative to the upper end face of the i-shaped mounting plate 1.
When the workpiece 68 is installed, one end of the workpiece 68 sleeved in the workpiece is firstly contacted with the three first clamping arc plates 13 which are distributed in an inclined manner, and then the three first clamping arc plates 13 are extruded; the three first clamping arc plates 13 are pressed to drive the three groups of telescopic structures to swing; in the swinging process, the workpiece 68 is sleeved, the three groups of telescopic structures contract and adapt at the same time, and the three telescopic jackets 11 slide and reset under the action of the second reset springs 17 relative to the three sliders 16; when the three groups of telescopic structures swing to be in contact with the upper end surface of the I-shaped mounting disc 1, namely the three groups of telescopic structures swing to be in a horizontal state with the upper end surface of the I-shaped mounting disc 1; at the moment, the upper ends of the three arc-shaped racks 10 are also just aligned with the square openings 21 formed on the three telescopic outer sleeves 11; at the moment, the adjusting rod 42 is driven to rotate by the auxiliary tool, so that the adjusting rod 42 drives the second gear 43 to rotate, the second gear 43 drives the first gear 41 to rotate, the first gear 41 drives the first worm 9 to rotate, and the first worm 9 drives the three first worm gears 53 to rotate; when the first worm wheel 53 rotates, the first worm wheel 53 drives the fourth rotating shaft 52 to rotate, the fourth rotating shaft 52 rotates to drive the seventh gear 50 to rotate, the seventh gear 50 rotates to drive the sixth gear 49 to rotate, the sixth gear 49 rotates to drive the fourth gear 47 to rotate, the fourth gear 47 rotates to drive the second rotating shaft 46 to rotate, the second rotating shaft 46 rotates to drive the fifth gear 48 to rotate, the fifth gear 48 rotates to drive the third gear 44 to rotate, and the third gear 44 rotates to drive the corresponding arc-shaped rack 10 to move upwards; the limiting blocks 40 at the upper ends of the three arc-shaped racks 10 penetrate through the square openings 21 on the three telescopic outer sleeves 11 and are meshed with the teeth on the three telescopic inner rods 12; the three groups of telescopic structures are limited in extension through three limiting blocks 40; in this state, on one hand, the straight surfaces 67 on the three telescopic jackets 11 are in contact with the mounting column 65, on the other hand, the first clamping arc plates 13 are in contact with the inner circular surface of the workpiece 68, the first clamping arc plates 13 are fixedly connected with the first telescopic inner rod 12, and after the telescopic structure is limited in telescopic mode, the axes of the first clamping arc plates 13 and the axes of the workpiece 68 are always parallel, so that the swinging of the three telescopic structures is limited; the inner wall of the workpiece 68 is clamped; then, the three outer clamping arc plates are manually pressed to approach the workpiece 68, after the three outer clamping arc plates contact the outer wall surface of the workpiece 68, the second worm 62 is manually rotated through an auxiliary tool, the second worm 62 drives the second worm wheel 61 to rotate, the second worm wheel 61 rotates to drive the adjusting rotating shaft 56 to rotate through the overrunning clutch 60, the adjusting rotating shaft 56 rotates to drive the eighth gear 23 to rotate, the eighth gear 23 rotates to drive the three racks 28 to slide, and the three racks 28 slide to drive the three second clamping arc plates 25 arranged on the racks to slide to clamp the outer wall of the workpiece 68; the workpiece 68 is installed.
When the device works, the motor 7 is controlled to work, the motor 7 drives the I-shaped mounting disc 1 to rotate through the coupler 6, and the I-shaped mounting disc 1 rotates to drive the workpiece 68 to rotate through the inner clamping mechanism 2 and the outer clamping mechanism 3 which are arranged on the I-shaped mounting disc 1.
Claims (10)
1. The utility model provides a fast-assembling anchor clamps which characterized in that: the machine tool comprises an I-shaped mounting disc, an inner clamping mechanism, an outer clamping mechanism, a base and a motor, wherein the lower end of the base is fixedly mounted on a frame body of the machine tool, and the motor is mounted on the inner side of the base; the I-shaped mounting disc is mounted on an output shaft of the motor and is in rotating fit with the base; the inner clamping mechanism and the outer clamping mechanism are arranged on the I-shaped mounting disc;
the inner clamping mechanism consists of three inner clamping units which are uniformly distributed in the circumferential direction; the inner clamping unit consists of a telescopic structure consisting of a telescopic outer sleeve and a telescopic inner rod and a first clamping arc plate arranged on the telescopic inner rod; a first return spring is arranged between the telescopic outer sleeve and the telescopic inner rod; two articulated shafts are slidably mounted on two sides of one end of the telescopic outer sleeve, and the telescopic outer sleeve is hinged to the I-shaped mounting plate through the two articulated shafts; a second return spring is arranged between the two articulated shafts and the telescopic outer sleeve; the lower end surface of the telescopic inner rod is provided with teeth; one end of the telescopic outer sleeve, which is provided with the articulated shaft, is provided with a straight surface; three arc-shaped racks are circumferentially and uniformly arranged on the inner side of the I-shaped mounting disc in a sliding manner, and the upper ends of the three arc-shaped racks are respectively provided with a limiting block in a swinging manner; two plate springs are respectively arranged between three limiting blocks at the upper ends of the three arc-shaped racks and the corresponding arc-shaped racks; the upper ends of three limiting blocks at the upper ends of the three arc-shaped racks penetrate out of the upper end surface of the I-shaped mounting plate and are matched with teeth on the three telescopic inner rods; the limiting blocks are always kept in an inclined state with the corresponding arc-shaped racks under the action of the two plate springs and are biased to one side provided with the first clamping arc plate;
the inner side of the I-shaped mounting disc is also provided with three first worm wheels and a first worm for controlling the three arc-shaped racks to slide, and the three first worm wheels are in one-to-one corresponding transmission connection with the three arc-shaped racks through gears respectively; the I-shaped mounting disc is also provided with an adjusting rod for controlling the first worm wheel to rotate;
the outer clamping mechanism consists of three outer clamping units which are uniformly distributed in the circumferential direction; the outer clamping unit consists of a rack and a second clamping arc plate, the rack is slidably mounted on the I-shaped mounting disc, and the second clamping arc plate is fixedly mounted at one end of the rack, which is positioned at the outer side of the I-shaped mounting disc, through a connecting plate; a third return spring is arranged between the second clamping arc plate and the I-shaped mounting disc;
an adjusting rotating shaft is installed on the inner side of the I-shaped installation disc, an eighth gear is installed at the upper end of the adjusting rotating shaft, a second worm wheel is installed at the lower end of the adjusting rotating shaft through an overrunning clutch, a second worm is installed on the I-shaped installation disc, and the second worm is meshed with the second worm wheel.
2. The quick-installation jig as claimed in claim 1, wherein: the upper end of the base is fixedly provided with a fixed sleeve; the lower end of the I-shaped mounting disc is rotatably mounted in the fixed sleeve; the output shaft of the motor is connected with the lower end of the I-shaped mounting disc through a coupler.
3. The quick-installation jig as claimed in claim 1, wherein: the upper end of the I-shaped mounting disc is fixedly provided with a mounting column; three groups of hinged lugs are uniformly arranged on the outer circular surface of the mounting column in the circumferential direction;
the inner sides of one ends of the three telescopic outer sleeves are respectively provided with a sliding block in a sliding manner, and a second reset spring is arranged between the sliding block and the telescopic outer sleeve; six articulated shafts arranged on the three telescopic outer sleeves are respectively and fixedly arranged on two sides of the three sliding blocks; two ends of the articulated shaft penetrate through two sides of the telescopic coat; the three telescopic outer sleeves are hinged and arranged on the outer circular surface of the mounting column through hinge shafts arranged on the inner side sliding blocks of the three telescopic outer sleeves; one end of the telescopic inner rod is slidably mounted on the inner side of the telescopic outer sleeve, and two ends of the first reset spring are respectively mounted on one end of the telescopic inner rod, which is located on the inner side of the telescopic outer sleeve, and the inner end face of the telescopic outer sleeve.
4. The quick-installation jig as claimed in claim 1, wherein: the inner side of the I-shaped mounting disc is provided with a first mounting groove, the inner circle surface at the upper end of the first mounting groove is circumferentially and uniformly provided with three fifth mounting grooves, and one side of each of the three fifth mounting grooves is provided with an arc-shaped groove penetrating out of the upper end surface of the I-shaped mounting disc; the first worm is rotatably arranged in the first mounting groove, and three first worm wheels in the I-shaped mounting disc are respectively rotatably arranged in three fifth mounting grooves; three arc-shaped racks in the I-shaped mounting disc are respectively and slidably mounted in the three arc-shaped grooves, and the upper ends of the three arc-shaped racks penetrate through the three arc-shaped grooves to be matched with the corresponding telescopic inner rod.
5. The quick-installation jig as claimed in claim 4, wherein: a third mounting groove is formed in the lower side of the first mounting groove, and a fourth mounting groove is formed in the upper side of the third mounting groove; the first gear is fixedly arranged at the lower end of the first worm and is positioned in the third mounting groove; the second gear is rotatably arranged in the fourth mounting groove and is meshed with the first gear; the second gear is fixedly connected with the adjusting rod.
6. The quick-installation jig as claimed in claim 5, wherein: the inner side of the I-shaped mounting disc is provided with a second mounting groove and a ninth mounting groove, and a first balancing weight for balancing the weight of a second gear and adjusting the weight of a rod is mounted in the second mounting groove; and a second balancing weight for balancing the second worm is arranged in the ninth mounting groove.
7. The quick-installation jig as claimed in claim 4, wherein: the structures of the three first worm gears and the three arc-shaped racks arranged in the three fifth mounting grooves and the three arc-shaped grooves are completely the same;
for the structure arranged between any one group of first worm gears and the arc-shaped rack, the fourth rotating shaft is rotatably arranged in the corresponding fifth mounting groove, the first worm gears are fixedly arranged at one end of the fourth rotating shaft, and the seventh gear is fixedly arranged at the other end of the fourth rotating shaft; one end of the third rotating shaft is fixedly arranged in the corresponding fifth mounting groove, the sixth gear is rotatably arranged on the third rotating shaft, and the sixth gear is meshed with the seventh gear; the second rotating shaft is rotatably arranged in the corresponding fifth mounting groove, the fourth gear is fixedly arranged at one end of the second rotating shaft, and the fourth gear is meshed with the sixth gear; the fifth gear is fixedly arranged at the other end of the second rotating shaft; one end of the first rotating shaft is fixedly arranged in the corresponding fifth mounting groove, the third gear is rotatably arranged at one end of the first rotating shaft, and the third gear is meshed with the fifth gear; the third gear is meshed with the corresponding arc-shaped rack.
8. The quick-installation jig as claimed in claim 5, wherein: a sixth mounting groove is formed in the upper side of a third mounting groove formed in the I-shaped mounting disc, and three rack mounting holes penetrating through the I-shaped mounting disc are uniformly formed in the circumferential direction of the inner circular surface of the sixth mounting groove; a seventh mounting groove is formed in the lower side of the third mounting groove, and an eighth mounting groove is formed in one side of the seventh mounting groove; the adjusting rotating shaft is nested and rotatably arranged on the inner side of the first worm, and the three racks are slidably arranged in the three rack mounting holes; the upper end of the adjusting rotating shaft is positioned in the sixth mounting groove, and the eighth gear is fixedly mounted at the upper end of the adjusting rotating shaft; the eighth gear is meshed with the three racks; the second worm wheel is installed at the lower end of the adjusting rotating shaft through the overrunning clutch and located in the seventh installation groove, the second worm is rotatably installed in the eighth installation groove, and the second worm is meshed with the second worm wheel.
9. The quick-installation jig as claimed in claim 1, wherein: three avoidance grooves for preventing the three telescopic outer sleeves from interfering with the I-shaped mounting disc in the swinging process are uniformly formed in the circumferential direction on the upper end surface of the I-shaped mounting disc.
10. The quick-installation jig as claimed in claim 1, wherein: the inner side of one end of the telescopic outer sleeve is provided with a first sliding chute, two sides of the first sliding chute are provided with a through second sliding chute, the sliding block is arranged in the first sliding chute in a sliding way, and a hinge shaft arranged on the sliding block penetrates through the second sliding chutes on the two sides of the first sliding chute and is hinged with a hinge support lug arranged on the I-shaped mounting disc;
the inner side of the telescopic outer sleeve is symmetrically provided with two guide grooves, one end of the telescopic inner rod is symmetrically provided with two guide blocks, and the telescopic inner rod is slidably arranged in the telescopic outer sleeve through the matching of the guide blocks and the guide grooves.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010418652.2A CN111451796B (en) | 2020-05-18 | 2020-05-18 | Fast-assembling anchor clamps |
| CN202110422952.2A CN113103034A (en) | 2020-05-18 | 2020-05-18 | Fast-assembling anchor clamps equipment |
| CN202110422953.7A CN113103035A (en) | 2020-05-18 | 2020-05-18 | Clamp capable of being rapidly clamped |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010418652.2A CN111451796B (en) | 2020-05-18 | 2020-05-18 | Fast-assembling anchor clamps |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110422952.2A Division CN113103034A (en) | 2020-05-18 | 2020-05-18 | Fast-assembling anchor clamps equipment |
| CN202110422953.7A Division CN113103035A (en) | 2020-05-18 | 2020-05-18 | Clamp capable of being rapidly clamped |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111451796A CN111451796A (en) | 2020-07-28 |
| CN111451796B true CN111451796B (en) | 2021-06-11 |
Family
ID=71674330
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110422952.2A Withdrawn CN113103034A (en) | 2020-05-18 | 2020-05-18 | Fast-assembling anchor clamps equipment |
| CN202110422953.7A Withdrawn CN113103035A (en) | 2020-05-18 | 2020-05-18 | Clamp capable of being rapidly clamped |
| CN202010418652.2A Active CN111451796B (en) | 2020-05-18 | 2020-05-18 | Fast-assembling anchor clamps |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110422952.2A Withdrawn CN113103034A (en) | 2020-05-18 | 2020-05-18 | Fast-assembling anchor clamps equipment |
| CN202110422953.7A Withdrawn CN113103035A (en) | 2020-05-18 | 2020-05-18 | Clamp capable of being rapidly clamped |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN113103034A (en) |
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| CN112658781B (en) * | 2020-12-08 | 2022-06-24 | 青岛泰尔信电子配件有限公司 | One-way type promotes isolating device for machining |
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| CN114161460B (en) * | 2021-12-20 | 2024-01-16 | 江西亚中电子科技股份有限公司 | Dustproof clamping equipment for LED lens |
| CN114406760A (en) * | 2021-12-24 | 2022-04-29 | 朱琳 | Positioning device capable of quickly fixing workpiece for processing novel plate |
| CN114346901B (en) * | 2021-12-28 | 2023-05-23 | 万津实业(赤壁)有限公司 | Automatic clamping device and hole polishing machine |
| CN114473567A (en) * | 2022-01-25 | 2022-05-13 | 苏机智能制造(江苏)有限公司 | CNC is centre gripping frock for work piece processing |
| CN114986075B (en) * | 2022-08-04 | 2022-10-28 | 常熟市虞华真空设备科技有限公司 | Shell welding fixing device for manufacturing vacuum equipment |
| CN115351453B (en) * | 2022-10-12 | 2023-09-26 | 定襄县伟艳锻造有限公司 | Welding processing technology for valve and flange connection |
| CN115351473A (en) * | 2022-10-19 | 2022-11-18 | 徐州泰铭电气有限公司 | Motor stator welding device |
| CN117340785B (en) * | 2023-11-30 | 2024-04-02 | 湖南盛伦智能科技有限公司 | Clamp for machining metal product |
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| KR20030057586A (en) * | 2001-12-28 | 2003-07-07 | 주식회사 두산 | A Pallet for Vertical CNC Lathe |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN111451796A (en) | 2020-07-28 |
| CN113103034A (en) | 2021-07-13 |
| CN113103035A (en) | 2021-07-13 |
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Effective date of registration: 20210531 Address after: 317399 3rd floor, No.1 Middle Yicheng Road, Anzhou street, Xianju County, Taizhou City, Zhejiang Province Applicant after: Taizhou Yunjie Environmental Technology Co.,Ltd. Address before: 321000 Kaihua village, Jiangtang Town, Wucheng District, Jinhua City, Zhejiang Province Applicant before: ZHEJIANG JINBAO TECHNOLOGY Co.,Ltd. |
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Application publication date: 20200728 Assignee: Taizhou Baoquan Agricultural Machinery Co.,Ltd. Assignor: Taizhou Yunjie Environmental Technology Co.,Ltd. Contract record no.: X2021330000534 Denomination of invention: A quick assembly fixture Granted publication date: 20210611 License type: Common License Record date: 20211027 Application publication date: 20200728 Assignee: Taizhou Xingchen Agricultural Machinery Co.,Ltd. Assignor: Taizhou Yunjie Environmental Technology Co.,Ltd. Contract record no.: X2021330000535 Denomination of invention: A quick assembly fixture Granted publication date: 20210611 License type: Common License Record date: 20211027 Application publication date: 20200728 Assignee: ZHEJIANG WEILAODA INDUSTRY AND TRADE CO.,LTD. Assignor: Taizhou Yunjie Environmental Technology Co.,Ltd. Contract record no.: X2021330000533 Denomination of invention: A quick assembly fixture Granted publication date: 20210611 License type: Common License Record date: 20211027 |
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Effective date of registration: 20221125 Address after: 252000 No.39, Wei 2 Road, Fenghuang Industrial Park, Dongchangfu District, Liaocheng City, Shandong Province Patentee after: SHANDONG LIAOCHENG DERUN EMT DEVELOPING Co.,Ltd. Address before: 317399 3rd floor, No.1 Middle Yicheng Road, Anzhou street, Xianju County, Taizhou City, Zhejiang Province Patentee before: Taizhou Yunjie Environmental Technology Co.,Ltd. |
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