Clamping device for irregular parts

Abstract

The invention relates to a clamping device for an irregular part, belongs to the technical field of mechanical assembly, and solves the problems that an existing clamping device has few clamping points, the surface of the irregular part is easily damaged, and the irregular part is easily slipped off from the clamping device in the clamping process due to unstable clamping. The clamping device for the irregular parts comprises a mounting plate, a housing, a centering unit and chucks, the housing and the centering unit are both arranged on the mounting plate, the number of the chucks is multiple, the chucks are arranged on the housing, and the centering unit is used for driving the chucks to slide on the housing. According to the clamping device for the irregular parts, the shape follow-up clamping pieces are arranged on the clamping jaws, the multiple clamping rods are arranged on the shape follow-up clamping pieces, the multiple clamping rods can be really connected with the surfaces of the irregular parts under pushing of the first springs, multiple clamping force bearing points are arranged on the surfaces of the irregular parts, the clamping force is dispersed, and the clamping effect is good. And the surface of the irregular part is prevented from being damaged, and clamping is stable.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical assembly, and particularly to a clamping device for irregular parts. Background Art

[0002] In a fixture, a device used to prevent a workpiece from displacing or vibrating during machining is called a clamping device. When designing a clamping device, the following requirements should be considered: the position of the workpiece should not be changed during clamping; the clamping force should be such that the workpiece does not displace or vibrate during machining, and at the same time, the surface of the workpiece should not be damaged or deformed; the operation should be convenient and the clamping action should be rapid to improve productivity; the structure should be simple and easy to manufacture to reduce the cost of the fixture; it should be self-locking, that is, it can still maintain the clamped state of the workpiece after the original force is removed; the operation should be safe and the labor intensity should be small.

[0003] The number of jaws of the chuck-type clamping devices on the market is 3 - 4. There are few clamping points for irregular parts, and it is easy to damage the surface of the irregular parts during use. The clamping is unstable, and such a clamping device is prone to the situation that the irregular parts slip off the clamping device during the clamping and machining process.

[0004] Therefore, there is an urgent need for a clamping device for irregular parts to solve the problems of few clamping points of the above-mentioned clamping device, easy damage to the surface of the irregular parts, and unstable clamping resulting in the irregular parts being prone to slipping off the clamping device during the clamping process. Summary of the Invention

[0005] In view of the above analysis, the embodiments of the present invention aim to provide a clamping device for irregular parts to solve the problems of few clamping points of the existing clamping device, easy damage to the surface of the irregular parts, and unstable clamping resulting in the irregular parts being prone to slipping off the clamping device during the clamping process.

[0006] The object of the present invention is mainly achieved through the following technical solutions:

[0007] A clamping device for irregular parts includes a mounting plate, a housing, a centering unit, and chucks. The housing and the centering unit are both arranged on the mounting plate. There are multiple chucks arranged on the housing, and the centering unit is used to drive the multiple chucks to slide on the housing.

[0008] Further, the housing is a circular housing.

[0009] Further, the housing includes an end cover and an enclosing shell, and the end cover is a circular end cover.

[0010] Further, a sliding groove is provided on the end cover, and the chuck is arranged on the sliding groove.

[0011] Further, the centering unit is arranged inside the housing.

[0012] Further, the centering unit includes a rotary wrench, a bevel gear and a centering turntable. The rotary wrench passes through the housing, one end of the rotary wrench is connected to the bevel gear, and the bevel gear is connected to the centering turntable.

[0013] Further, the rotary wrench is arranged perpendicular to the housing.

[0014] Further, the chuck includes a rack and a chuck seat. The chuck seat is arranged on the rack, and the rack is connected to the centering turntable.

[0015] Further, it further includes a jaw, and the jaw is arranged on the chuck.

[0016] Further, it further includes a base, and the base is connected to the mounting plate.

[0017] Compared with the prior art, the present invention can at least achieve one of the following beneficial effects:

[0018] (1) The jaws of the clamping device for irregular parts of the present invention are provided with a plurality of conforming clamping members. The conforming clamping members are provided with a plurality of clamping rods. Under the pushing of the first spring, the plurality of clamping rods can all be firmly connected to the surface of the irregular part. There are a plurality of clamping stress points on the surface of the irregular part, and the clamping force is dispersed, preventing damage to the surface of the irregular part. At the same time, the irregular part is clamped according to its irregular surface, and the clamping is stable, preventing the irregular part from slipping off the clamping device during the clamping process, facilitating the processing operation of the irregular part;

[0019] (2) The rotary wrench of the clamping device for irregular parts of the present invention is arranged perpendicular to the housing. The rotary wrench does not interfere with the chuck and does not affect the sliding of the chuck, facilitating the clamping operation of the irregular part; the chuck cannot drive the centering turntable to rotate, and the bevel gear and the centering turntable can achieve self-locking, ensuring the stable clamping of the irregular part by the chuck;

[0020] (3) The first clamping arm and the second clamping arm of the conforming clamping member of the clamping device for irregular parts of the present invention can move away from or towards each other, expanding or reducing the included angle between the first clamping arm and the second clamping arm, thereby changing the clamping range of the first clamping arm and the second clamping arm, which is more conducive to the jaws adapting to various specifications of irregular parts with different sizes; the second spring and the third spring are used to keep the first clamping arm and the second clamping arm in a state of being closely attached to each other, so that the first clamping arm and the second clamping arm are closely attached to the irregular part, which is conducive to the jaws clamping the irregular part more stably;

[0021] (4) The third and fourth clamping arms of the conforming clamping member of the clamping device for irregular parts in the present invention form a clamping fork. The clamping fork is V-shaped. The second pin is arranged on the third jaw seat and is rotatably connected to the clamping fork. The clamping fork can rotate around the second pin. The third clamping arm can be pushed by the convex surface of the irregular part towards the third jaw seat, and the fourth clamping arm will automatically move towards the surface of the irregular part, so that the clamping fork can adapt to the uneven surface of the irregular part and clamp the irregular part. The fourth spring can provide buffering for the conforming clamping member to ensure the reliable connection between the conforming clamping member and the surface of the irregular part. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings are only for the purpose of illustrating specific embodiments and are not considered to be a limitation of the present invention. Throughout the drawings, the same reference numerals represent the same components.

[0023] Figure 1 It is a schematic diagram of the overall structure of the clamping device;

[0024] Figure 2 It is a schematic diagram of the internal structure of the clamping device;

[0025] Figure 3 It is a schematic diagram of the longitudinal sectional structure of the jaw in Embodiment 1;

[0026] Figure 4 It is a schematic diagram of the overall structure of the jaw in Embodiment 2;

[0027] Figure 5 It is a schematic diagram of the overall structure of the jaw in Embodiment 3.

[0028] Reference Numerals:

[0029] 1 - mounting plate; 2 - housing; 3 - centering unit; 4 - chuck; 5 - jaw; 6 - base; 21 - end cover; 22 - enclosure; 31 - rotary wrench; 32 - bevel gear; 33 - centering turntable; 34 - turntable teeth; 35 - centering slideway; 41 - rack; 42 - chuck seat; 51 - first jaw seat; 52 - jaw frame; 53 - clamping rod; 54 - stop flange; 55 - first spring; 61 - second jaw seat; 62 - first clamping arm; 63 - second clamping arm; 64 - first pin; 65 - second spring; 66 - third spring; 67 - first roller; 68 - second roller; 71 - third jaw seat; 72 - positioning bolt; 73 - third clamping arm; 74 - fourth clamping arm; 75 - second pin; 76 - first sheath; 77 - second sheath; 521 - first outer wall; 522 - second outer wall. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings. The accompanying drawings form a part of the present invention and are used together with the embodiments of the present invention to explain the principles of the present invention, rather than to limit the scope of the present invention.

[0031] Embodiment 1

[0032] A specific embodiment of the present invention, as Figure 1 shown, discloses a clamping device for irregular parts (hereinafter referred to as the clamping device), which includes a mounting plate 1, a housing 2, a centering unit 3 and a chuck 4. The housing 2 and the centering unit 3 are both arranged on the mounting plate 1. There are multiple chucks 4 and they are arranged on the housing 2. The centering unit 3 is used to drive the multiple chucks 4 to slide on the housing 2, so as to clamp the irregular parts.

[0033] Preferably, the housing 2 is a circular housing. The housing 2 includes an end cover 21 and a surrounding shell 22. The end cover 21 is a circular end cover. A chute is provided on the end cover 21, and the chuck 4 is arranged on the chute. The setting direction of the chute intersects with the central axis of the housing 2, and the number of the chutes is the same as the number of the chucks 4. The multiple chucks 4 can slide synchronously along the chute towards or away from the central axis, so as to clamp or loosen the irregular parts.

[0034] Preferably, as Figure 2 shown, the centering unit 3 is arranged in the surrounding shell 22. The centering unit 3 includes a rotary wrench 31, a bevel gear 32 and a centering turntable 33. The rotary wrench 31 is vertically arranged on the surrounding shell 22 and passes through the surrounding shell 22. One end of the rotary wrench 31 is connected to the bevel gear 32, and the bevel gear 32 is connected to the centering turntable 33. The rotary wrench 31 is vertically arranged with respect to the surrounding shell 22. The rotary wrench 31 does not interfere with the chuck 4 and does not affect the sliding of the chuck 4, which is convenient for the clamping operation of the irregular parts.

[0035] Preferably, a turntable tooth 34 is provided on one side of the centering turntable 33, and a centering slideway 35 is provided on the other side of the centering turntable 33. The turntable tooth 34 is connected to the bevel gear 32. By rotating the bevel gear 32, the bevel gear 32 can drive the turntable tooth 34, thereby driving the centering turntable 33 to rotate. The centering slideway 35 is connected to the chuck 4. When the centering turntable 33 rotates, it can drive the centering slideway 35 to rotate, thereby driving the multiple chucks 4 to move synchronously towards or away from the central axis. The chuck 4 cannot drive the centering turntable 33 to rotate, and the bevel gear 32 and the centering turntable 33 can achieve self-locking to ensure the stable clamping of the irregular parts by the chuck 4.

[0036] Preferably, the centering slideway 35 is a spiral slideway, and the multiple chucks 4 can move synchronously along the spiral slideway towards or away from the central axis.

[0037] Preferably, the chuck 4 includes a rack 41 and a chuck base 42. The chuck base 42 is arranged on the sliding groove and connected to the rack 41, and the rack 41 is connected to the centering slideway 35. The centering slideway 35 is used to drive the rack 41 to move towards or away from the central axis.

[0038] Preferably, the clamping device of this embodiment further includes a jaw 5, and the jaw 5 is arranged on the chuck 4. Specifically, the jaw 5 is arranged on the chuck base 42.

[0039] Preferably, as Figure 3 shown, the jaw 5 includes a first jaw base 51 and a conforming clamping member. The first jaw base 51 is connected to the chuck base 42, and the conforming clamping member is connected to the first jaw base 51. The conforming clamping member can adapt to the irregular surface of the irregular part and clamp the irregular part.

[0040] Preferably, the conforming clamping member includes a jaw frame 52 and a clamping rod 53. The jaw frame 52 is connected to the first jaw base 51, the clamping rod 53 is arranged on the jaw frame 52, and the clamping rod 53 is used to clamp the irregular part.

[0041] Preferably, the jaw frame 52 is an arc-shaped frame. The jaw frame 52 includes a first outer wall 521 and a second outer wall 522. The length of the second outer wall 522 is less than that of the first outer wall 521, and the clamping rod 53 is arranged on the second outer wall 522. There are multiple clamping rods 53, and the clamping rods 53 are arranged perpendicular to the second outer wall 522. When the clamping rods 53 clamp the irregular part, they will not be affected by the shearing force and can firmly clamp the irregular part.

[0042] Preferably, a stop flange 54 is provided on the clamping rod 53, and the stop flange 54 is used to prevent the clamping rod 53 from detaching from the jaw frame 52; the conforming clamping member further includes a first spring 55. One end of the first spring 55 is connected to the first outer wall 521, and the other end of the first spring 55 is connected to the stop flange 54. The first spring 55 is used to make the clamping rod 53 disengage from the second outer wall 522, and can ensure the firm connection between the clamping rod 53 and the surface of the irregular part. The first spring 55 can also provide buffering for the clamping rod 53 to ensure that the surface of the irregular part is not damaged.

[0043] Preferably, a buffer pad is provided on the end surface of the connection end of the clamping rod 53 and the irregular part. The buffer pad is a rubber buffer pad, and the buffer pad is used to buffer the extrusion of the clamping rod 53 on the surface of the irregular part to prevent damage to the surface of the irregular part.

[0044] Preferably, a plurality of conforming clamping members are provided on the clamping jaw 5, and a plurality of clamping rods 53 are provided on the conforming clamping members. Under the pushing of the first spring 55, the plurality of clamping rods 53 can all be firmly connected to the surface of the irregular part. There are a plurality of clamping force application points on the surface of the irregular part, and the clamping force is dispersed, preventing damage to the surface of the irregular part. At the same time, the irregular part is clamped according to its irregular surface, and the clamping is stable, preventing the irregular part from slipping off the clamping device during the clamping process, facilitating the processing operation of the irregular part.

[0045] Preferably, as Figure 1 shown, the clamping device of this embodiment further includes a base 6. The base 6 is connected to the mounting plate 1. The base 6 is used to carry the clamping device of this embodiment, enabling the clamping device to be used vertically.

[0046] During use, place the irregular part on the central axis and in the plane where the plurality of clamping jaws 5 are located. Rotate the rotary wrench 31 to drive the bevel gear 32 to rotate. The bevel gear 32 drives the turntable gear 34, thereby driving the centering turntable 33 to rotate. The centering turntable 33 drives the centering slideway 35 to rotate, thereby driving the plurality of chucks 4 and the clamping jaws 5 to slide synchronously towards the central axis direction; under the pushing of the first spring 55, the plurality of clamping rods 53 of the plurality of conforming clamping members are respectively firmly connected to the irregular surface of the irregular part, preventing the irregular part from slipping off the clamping device during the clamping process, facilitating the processing operation of the irregular part.

[0047] Compared with the prior art, in the clamping device of this embodiment, a plurality of conforming clamping members are provided on the clamping jaw 5, and a plurality of clamping rods 53 are provided on the conforming clamping members. Under the pushing of the first spring 55, the plurality of clamping rods 53 can all be firmly connected to the surface of the irregular part. There are a plurality of clamping force application points on the surface of the irregular part, and the clamping force is dispersed, preventing damage to the surface of the irregular part. At the same time, the irregular part is clamped according to its irregular surface, and the clamping is stable, preventing the irregular part from slipping off the clamping device during the clamping process, facilitating the processing operation of the irregular part; the rotary wrench 31 is perpendicular to the enclosure 22, and the rotary wrench 31 does not interfere with the chuck 4 and does not affect the sliding of the chuck 4, facilitating the clamping operation of the irregular part; the chuck 4 cannot drive the centering turntable 33 to rotate, and the bevel gear 32 and the centering turntable 33 can achieve self-locking, ensuring the stable clamping of the irregular part by the chuck 4.

[0048] Embodiment 2

[0049] Another specific embodiment of the present invention, as Figure 4 shown, on the basis of the clamping device of Embodiment 1, the clamping jaw 5 is improved, and the clamping width of the conforming clamping member can be changed to clamp irregular parts of different specifications.

[0050] Preferably, the jaw 5 includes a second jaw seat 61 and a conforming gripper. The second jaw seat 61 is fixedly connected to the chuck seat 42, and the conforming gripper is connected to the second jaw seat 61. The conforming gripper can adapt to the irregular surface of the irregular part and clamp the irregular part.

[0051] Preferably, the conforming gripper of the clamping device in this embodiment includes a first clamping arm 62, a second clamping arm 63, and a first pin 64. The first pin 64 is arranged on the second jaw seat 61. The first clamping arm 62 and the second clamping arm 63 are respectively connected to the first pin 64, and both the first clamping arm 62 and the second clamping arm 63 can rotate around the first pin 64. The first clamping arm 62 and the second clamping arm 63 can move away from or towards each other, expanding or reducing the angle between the first clamping arm 62 and the second clamping arm 63, so as to change the clamping range of the first clamping arm 62 and the second clamping arm 63, which is more conducive to the jaw 5 adapting to various specifications of irregular parts with different sizes.

[0052] Preferably, in order to make the first clamping arm 62 and the second clamping arm 63 fit more closely to the irregular part and make the jaw 5 clamp the irregular part more firmly, the conforming gripper further includes a second spring 65 and a third spring 66. One end of the second spring 65 is connected to the second jaw seat 61, and the other end of the second spring 65 is connected to the first clamping arm 62. One end of the third spring 66 is connected to the second jaw seat 61, and the other end of the third spring 66 is connected to the second clamping arm 63. The second spring 65 and the third spring 66 are used to keep the first clamping arm 62 and the second clamping arm 63 in a state of being closely attached to each other, making the first clamping arm 62 and the second clamping arm 63 closely attached to the irregular part, which is conducive to the jaw 5 clamping the irregular part more firmly.

[0053] Preferably, the conforming gripper further includes a first roller 67 and a second roller 68. The first roller 67 is arranged at one end of the first clamping arm 62, and the second roller 68 is arranged at one end of the second clamping arm 63. The first roller 67 and the second roller 68 can rotate on the first clamping arm 62 and the second clamping arm 63 respectively, changing the sliding of the end of the first clamping arm 62 and the end of the second clamping arm 63 on the surface of the irregular part into rolling, reducing the damage to the surface of the irregular part.

[0054] Preferably, the first roller 67 and the second roller 68 are flexible rollers, and the flexible rollers cause the least damage to the surface of the irregular part, which is more conducive to protecting the surface of the irregular part.

[0055] Preferably, the rolling axes of the first roller 67 and the second roller 68 are parallel to the first pin 64, preventing the irregular part from disengaging from the jaw 5 along the central axis direction.

[0056] During use, place the irregular part on the central axis and on the plane where multiple jaws 5 are located. Rotate the rotary wrench 31 to drive the bevel gear 32 to rotate. The bevel gear 32 drives the turntable gear 34, thereby driving the centering turntable 33 to rotate. The centering turntable 33 drives the centering slideway 35 to rotate, thereby driving multiple chucks 4 and jaws 5 to slide synchronously towards the central axis direction; the first clamping arms 62 and the second clamping arms 63 of multiple conformable clamping members move away from each other, expanding the angle between the first clamping arms 62 and the second clamping arms 63 to adapt to the shape of the irregular part. Under the elastic force of the second spring 65 and the third spring 66, the first clamping arms 62 and the second clamping arms 63 are closely attached to the irregular part, respectively and firmly connected to the irregular surface of the irregular part, preventing the irregular part from slipping off the clamping device during the clamping process and facilitating the processing operation of the irregular part.

[0057] Compared with Embodiment 1, the jaws 5 of the clamping device in this embodiment are provided with conformable clamping members. The first clamping arms 62 and the second clamping arms 63 of the conformable clamping members can move away from or towards each other, expanding or reducing the angle between the first clamping arms 62 and the second clamping arms 63, thereby changing the clamping range of the first clamping arms 62 and the second clamping arms 63, which is more conducive to the jaws 5 adapting to various specifications of irregular parts with different sizes; the second spring 65 and the third spring 66 are used to keep the first clamping arms 62 and the second clamping arms 63 in a state of being closely attached to each other, making the first clamping arms 62 and the second clamping arms 63 closely attached to the irregular part, which is conducive to the jaws 5 clamping the irregular part more firmly; the first roller 67 and the second roller 68 can rotate on the first clamping arm 62 and the second clamping arm 63 respectively, changing the sliding of the end of the first clamping arm 62 and the end of the second clamping arm 63 on the surface of the irregular part into rolling, reducing the damage to the surface of the irregular part.

[0058] Embodiment 3

[0059] Another specific embodiment of the present invention is as Figure 5 shown. Based on the clamping device of Embodiment 1 or Embodiment 2, the jaws 5 are improved, and the clamping depth of the conformable clamping member can be changed to adapt to the uneven surface of the irregular part.

[0060] Preferably, the clamping jaw 5 comprises a third clamping jaw seat 71, a positioning bolt 72 and a conformal clamping piece, a clamping jaw slot (not shown in the figure) is provided on the clamping jaw seat 42, the clamping jaw slot is a dovetail slot, a dovetail slider is provided on the third clamping jaw seat 71, the dovetail slider is connected to the dovetail slot, the third clamping jaw seat 71 can slide on the clamping jaw slot of the clamping jaw seat 42, the sliding direction is perpendicular to the central axis, and the third clamping jaw seat 71 cannot be separated from the clamping jaw seat 42 in a direction perpendicular to the sliding direction; a positioning slot is provided on the third clamping jaw seat 71, the positioning bolt 72 passes through the positioning slot and is connected to the third clamping jaw seat 71, and the positioning bolt 72 is used to prevent the third clamping jaw seat 71 from being separated from the clamping jaw seat 42. The conformal clamping piece is connected to one end of the third clamping jaw seat 71. The conformal clamping piece can adapt to the uneven surface of irregular parts and clamp the irregular parts.

[0061] Preferably, the conformable clamping member of the clamping device of this embodiment includes a third clamping arm 73, a fourth clamping arm 74 and a second pin 75, one end of the third clamping arm 73 and one end of the fourth clamping arm 74 are fixedly connected, the third clamping arm 73 and the fourth clamping arm 74 constitute a clamping fork, the clamping fork is V-shaped, and the second pin 75 is arranged on the third clamping claw seat 71 and is rotatably connected to the clamping fork. The clamping fork can rotate around the second pin 75, the third clamping arm 73 can be pushed toward the third clamping claw seat 71 by the convex surface of the irregular part, and the fourth clamping arm 74 will automatically move toward the surface of the irregular part, so that the clamping fork can adapt to the uneven surface of the irregular part and clamp the irregular part.

[0062] Preferably, the clamp 5 also includes a fourth spring (not shown in the figure), one end of the fourth spring is connected to the positioning bolt 72, and the other end of the fourth spring is connected to the positioning groove. The fourth spring is used to make the third clamp seat 71 and the conformable clamp move toward the center axis direction. The fourth spring can provide a buffer for the conformable clamp to ensure that the conformable clamp is securely connected to the surface of the irregular part.

[0063] Preferably, the conformable clamp further comprises a first sheath 76 and a second sheath 77, wherein the first sheath 76 is disposed on the third clamp arm 73, and the second sheath 77 is disposed on the fourth clamp arm 74. The first sheath 76 and the second sheath 77 are used to isolate the third clamp arm 73 and the fourth clamp arm 74 from the surface of the irregular part, thereby preventing the third clamp arm 73 and the fourth clamp arm 74 from damaging the surface of the irregular part and protecting the irregular part.

[0064] During the use of this embodiment, the irregular part is placed on the central axis and lies in the plane where multiple jaws 5 are located. The rotary wrench 31 is rotated to drive the bevel gear 32 to rotate. The bevel gear 32 drives the turntable gear 34, thereby driving the centering turntable 33 to rotate. The centering turntable 33 drives the centering slideway 35 to rotate, thereby driving multiple chucks 4 and jaws 5 to slide synchronously towards the central axis direction; the clamping forks of multiple conforming clamping members rotate around the second pin 75. The third clamping arm 73 is pushed towards the third jaw seat 71 by the convex surface of the irregular part, and the fourth clamping arm 74 will automatically move towards the surface of the irregular part, so that the clamping forks can adapt to the uneven surface of the irregular part and clamp the irregular part. The fourth spring provides buffering for the conforming clamping member and pushes the conforming clamping member to connect with the surface of the irregular part, preventing the irregular part from slipping off the clamping device during the clamping process, facilitating the processing operation of the irregular part.

[0065] Compared with Embodiment 1 and Embodiment 2, the jaws 5 of the clamping device in this embodiment are provided with conforming clamping members. The third clamping arm 73 and the fourth clamping arm 74 of the conforming clamping member form a clamping fork. The clamping fork is V-shaped. The second pin 75 is arranged on the third jaw seat 71 and is rotationally connected to the clamping fork. The clamping fork can rotate around the second pin 75. The third clamping arm 73 can be pushed towards the third jaw seat 71 by the convex surface of the irregular part, and the fourth clamping arm 74 will automatically move towards the surface of the irregular part, so that the clamping forks can adapt to the uneven surface of the irregular part and clamp the irregular part; the fourth spring is used to move the third jaw seat 71 and the conforming clamping member towards the central axis direction. The fourth spring can provide buffering for the conforming clamping member to ensure the reliable connection between the conforming clamping member and the surface of the irregular part; the first sheath 76 and the second sheath 77 are used to isolate the connection between the third clamping arm 73 and the fourth clamping arm 74 and the surface of the irregular part, preventing the third clamping arm 73 and the fourth clamping arm 74 from damaging the surface of the irregular part and protecting the irregular part.

[0066] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention.

Claims

1. A clamping device for irregular parts, characterized in that, It includes a mounting plate (1), a housing (2), a centering unit (3) and chucks (4). The housing (2) and the centering unit (3) are both arranged on the mounting plate (1). There are multiple chucks (4) which are arranged on the housing (2). The centering unit (3) is used to drive the multiple chucks (4) to slide on the housing (2).

2. The clamping device for irregular parts according to claim 1, characterized in that, The housing (2) is a circular housing.

3. The clamping device for irregular parts according to claim 2, characterized in that, The housing (2) includes an end cover (21) and a surrounding shell (22), and the end cover (21) is a circular end cover.

4. The clamping device for irregular parts according to claim 3, characterized in that, A sliding groove is provided on the end cover (21), and the chuck (4) is arranged on the sliding groove.

5. The clamping device for irregular parts according to claim 4, characterized in that, The centering unit (3) is arranged inside the surrounding shell (22).

6. The clamping device for irregular parts according to claim 5, characterized in that, The centering unit (3) includes a rotating wrench (31), a bevel gear (32) and a centering turntable (33). The rotating wrench (31) passes through the surrounding shell (22). One end of the rotating wrench (31) is connected to the bevel gear (32), and the bevel gear (32) is connected to the centering turntable (33).

7. The clamping device for irregular parts according to claim 6, characterized in that, The rotating wrench (31) is arranged perpendicular to the surrounding shell (22).

8. The clamping device for irregular parts according to claim 5, characterized in that, The chuck (4) includes a rack (41) and a chuck seat (42). The chuck seat (42) is arranged on the rack (41), and the rack (41) is connected to the centering turntable (33).

9. The clamping device for irregular parts according to claim 1, characterized in that, It further includes a jaw (5), and the jaw (5) is arranged on the chuck (4).

10. The clamping device for irregular parts according to claim 1, characterized in that, It further includes a base (6), and the base (6) is connected to the mounting plate (1).

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