Fixture suitable for revolving body workpiece

Abstract

The clamp comprises a base, a clamping assembly and a driving assembly, the clamping assembly comprises a clamping support, a clamping arm, a clamping rod and a rolling wheel support, the clamping support is arranged on the base in a sliding mode and can adjust the position of the clamping assembly, the clamping arm is arranged on the clamping support and connected with the clamping rod, and the rolling wheel support is connected with the clamping rod. The ends of the clamping rods can abut against the rotary body workpiece, and the two sets of symmetrically-arranged clamping rods are matched to clamp the two sides of the upper portion of the rotary body workpiece. The two supporting rollers support the two sides of the lower portion of the rotary workpiece, each clamping assembly forms four-point surrounding type supporting on the rotary workpiece through the two clamping rods and the two rollers, and the clamping stability is guaranteed. The clamping arm is hinged to the clamping rod, the clamping arm can adapt to clamping of rotary workpieces of different specifications, the clamping force can be adjusted by adjusting the angle between the clamping arm and the clamping rod, the first driver drives the two clamping assemblies to move through the transmission mechanism, the clamping length is adjusted, the clamping requirement is met, and the production cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of water jet cutting production equipment and its peripheral supporting facilities, in particular to a clamp suitable for a rotating workpiece. Background Art

[0002] The solid rocket engine shell is used to bear the axial load of the rocket, ensuring that the fuel-carrying compartment of the missile is not damaged by axial pressure during storage and operation, thus ensuring the stability of the missile structure. In order to ensure the stability of the missile structure, it is necessary to conduct compression tests on different experimental models during research, and to conduct cross-section cutting research on the models after compression damage. At the same time, different models have different damage locations, and the parts and sizes that need to be cut are also different.

[0003] Currently, there is no fixture specifically designed for cutting this type of rotating body on the market. It is necessary to meet the requirements of adaptive adjustment to rotating bodies of different sizes and the ability to adjust the position of the model during cutting. Traditional fixtures do not have a mechanism to automatically adapt to the diameter and length of the rotating body. When a model is changed, a special fixture needs to be replaced, which is very wasteful. Traditional fixtures cannot customize the clamping force according to the strength of the composite material, and cannot ensure that the composite material itself is not damaged while clamping. Traditional fixtures cannot change the position of the model during the cutting process, so the range and size of the cutting cannot be customized. Summary of the invention

[0004] The purpose of the present invention is to provide a clamp suitable for rotating workpieces to solve the problems existing in the above-mentioned related technologies, to achieve clamping of different rotating workpieces, and to be able to adjust the clamping force, thereby improving the flexibility and adaptability of the clamp, saving the cost of clamping the rotating workpiece, and providing convenience for subsequent production processes.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a fixture suitable for a rotating workpiece, comprising:

[0007] Base;

[0008] The clamping assembly comprises a clamping bracket, a clamping arm, a clamping rod and a roller bracket, the clamping bracket is slidably arranged on the base, the clamping arm is arranged on the clamping bracket, one end of the clamping arm away from the clamping bracket is hingedly connected with the clamping rod, the angle between the clamping arm and the clamping rod can be fixed, and the end of the clamping rod away from the clamping arm can be abutted against a rotating workpiece; the number of the clamping arms is two groups, and the two clamping arms are symmetrically arranged with the sliding axis of the clamping bracket as the symmetry axis; the roller bracket comprises a connecting frame and a supporting roller rotatably arranged on the connecting frame, the supporting roller can abut against a rotating workpiece, the connecting frame is connected to the clamping bracket, and the connection position of the two can be adjusted; the number of the roller bracket is two groups, and the two roller brackets are located between the two clamping arms;

[0009] The number of the clamping assemblies is two groups, and the two clamping assemblies are arranged in a direction parallel to the sliding axis of the clamping bracket;

[0010] The driving assembly includes a first driver and a transmission mechanism. The first driver is arranged on the base. The first driver is connected to the two clamping assemblies by the transmission mechanism to drive the two clamping assemblies to move at the same time, and the movement directions of the two clamping assemblies are opposite.

[0011] Preferably, a clamping rod is provided between the clamping arm and the clamping rod, the length of the clamping rod is adjustable, one end of the clamping rod is hinged to the clamping arm, the other end of the clamping rod is hinged to one end of the clamping rod, the clamping rod is L-shaped, the middle part of the clamping rod is hinged to the clamping arm, and the other end of the clamping rod can be abutted against a rotating workpiece.

[0012] Preferably, the clamping rod is a hydraulic cylinder, a fixed end of the hydraulic cylinder is hinged to the clamping arm, and a movable end of the hydraulic cylinder is hinged to the clamping rod.

[0013] Preferably, the clamping arm has a mounting groove, the clamping rod and the clamping rod both extend into the mounting groove, and the clamping rod, the clamping rod and the clamping arm are all hinged by a pin.

[0014] Preferably, the connecting frame is sleeved on the clamping bracket and is tightened by fastening bolts.

[0015] Preferably, the clamping assembly further comprises a clamping head, the clamping head is rotatably connected to the clamping arm and the two correspond one to one, and the outer peripheral surface of the clamping head abuts against the rotating workpiece.

[0016] Preferably, in the clamping assembly, one of the clamping heads is connected to a second driver, the second driver is arranged on the clamping arm, the output end of the second driver is transmission-connected to the clamping head, and the second driver can drive the clamping head to rotate;

[0017] The clamping head is detachably connected to the clamping arm.

[0018] Preferably, the transmission mechanism includes a transmission screw and a screw head, the transmission screw is rotatably arranged on the base, and the output end of the first driver is transmission-connected to the transmission screw, the screw head is threadedly connected to the transmission screw, and the screw head is connected to the clamping bracket; the number of the transmission mechanisms is two groups and corresponds one-to-one to the clamping assemblies.

[0019] Preferably, the output end of the first driver is connected to a motor gear, the screw heads of the two transmission mechanisms are connected to transmission gears, the two transmission gears are symmetrically arranged with the rotating shaft of the motor gear as the symmetry axis, and the two transmission gears are meshed with the motor gear, and the transmission gear and the motor gear are both bevel gears.

[0020] Preferably, the clamping bracket has a slide groove, the base has a slide rail matched with the slide groove, the clamping bracket is slidably disposed on the slide rail, and the length direction of the slide rail is parallel to the axial direction of the transmission screw.

[0021] Compared with the related art, the present invention has achieved the following technical effects: the clamp suitable for the rotating workpiece of the present invention comprises a base, a clamping assembly and a driving assembly, the clamping assembly comprises a clamping bracket, a clamping arm, a clamping rod and a roller bracket, the clamping bracket is slidably arranged on the base, the clamping arm is arranged on the clamping bracket, the end of the clamping arm away from the clamping bracket is hinged with the clamping rod, the angle between the clamping arm and the clamping rod can be fixed, and the end of the clamping rod away from the clamping arm can be against the rotating workpiece; the number of the clamping arms is two groups, and the two clamping arms are symmetrically arranged with the sliding axis of the clamping bracket as the symmetry axis; the roller bracket It includes a connecting frame and a supporting roller rotatably arranged on the connecting frame, the supporting roller can be against the rotating workpiece, the connecting frame is connected to the clamping bracket, and the connection position of the two can be adjusted; the number of roller brackets is two groups, and the two roller brackets are located between the two clamping arms; the number of clamping assemblies is two groups, and the two clamping assemblies are arranged in a direction parallel to the sliding axis of the clamping bracket; the driving assembly includes a first driver and a transmission mechanism, the first driver is arranged on the base, and the first driver is respectively connected to the two clamping assemblies by the transmission mechanism to drive the two clamping assemblies to move at the same time, and the movement directions of the two clamping assemblies are opposite.

[0022] The clamp suitable for a rotating workpiece of the present invention has a clamping bracket that is slidably arranged on a base, and the position of the clamping assembly can be adjusted to facilitate clamping of different positions of the rotating workpiece. The clamping arm is arranged on the clamping bracket, and the clamping arm is connected to a clamping rod, and the end of the clamping rod can abut against the rotating workpiece, and two groups of symmetrically arranged clamping rods cooperate to clamp the upper two sides of the rotating workpiece; at the same time, the clamping assembly also includes a roller bracket, the roller bracket is located below the clamping rod, and two supporting rollers support the lower two sides of the rotating workpiece. Each group of clamping assemblies uses two clamping rods and two rollers to form a four-point surround support for the rotating workpiece to ensure clamping stability; the two groups of clamping assemblies are arranged along the axial direction of the rotating workpiece, which is convenient for adjusting the clamping position and clamping length, and further improving the clamping reliability. The clamping assembly of the present invention has a clamping arm and a clamping rod that are hinged, which can adapt to the clamping of rotating workpieces of different specifications. Adjusting the angle between the two can adjust the clamping force, meet the clamping of rotating workpieces of different materials, and improve the adaptability of the clamp; and the supporting roller is rotatably located at the bottom of the rotating workpiece, which is convenient for adjusting the angle of the rotating workpiece. The driving assembly of the present invention, the first driver uses a transmission mechanism to drive the two groups of clamping assemblies to move, adjust the clamping length, meet the clamping requirements, and save the energy consumption and production cost of the clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is an axonometric schematic diagram of a fixture suitable for a rotating workpiece disclosed in an embodiment of the present invention;

[0025] Figure 2 It is a front view schematic diagram of a fixture applicable to a rotating workpiece disclosed in an embodiment of the present invention;

[0026] Figure 3 A schematic top view of a fixture for a rotating workpiece disclosed in an embodiment of the present invention;

[0027] Figure 4 A schematic side view of a fixture for a rotating workpiece disclosed in an embodiment of the present invention;

[0028] Figure 5 It is a schematic diagram of the clamp for a rotating workpiece disclosed in an embodiment of the present invention when in operation;

[0029] Figure 6It is a schematic structural diagram of a clamping bracket of a fixture applicable to a rotating workpiece disclosed in an embodiment of the present invention;

[0030] Figure 7 It is a schematic structural diagram of a roller support of a fixture for a rotating workpiece disclosed in an embodiment of the present invention;

[0031] Figure 8 It is a schematic structural diagram of a clamping arm of a clamp applicable to a rotating workpiece disclosed in an embodiment of the present invention;

[0032] Fig. 9 It is a schematic structural diagram of a clamping rod of a clamp suitable for a rotating workpiece disclosed in an embodiment of the present invention.

[0033] In the figure: 100, a fixture suitable for a rotating workpiece;

[0034] 1. Base; 2. Clamping assembly; 3. Driving assembly; 4. Clamping bracket; 5. Clamping arm; 6. Clamping rod; 7. Roller bracket; 8. Support roller; 9. First driver; 10. Clamping rod; 11. Clamping head; 12. Drive screw; 13. Screw head; 14. Motor gear; 15. Drive gear; 16. Slide groove; 17. Slide rail; 18. Rotating workpiece; 19. Connecting frame. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] The purpose of the present invention is to provide a clamp suitable for rotating workpieces to solve the problems existing in the above-mentioned related technologies, to achieve clamping of different rotating workpieces, and to be able to adjust the clamping force, thereby improving the flexible adaptability of the clamp and the clamping safety factor, saving the clamping cost of the rotating workpiece and providing convenience for subsequent production processes.

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Embodiment 1

[0039] This embodiment provides a fixture 100 suitable for a rotating workpiece. Figure 1-Figure 9, including a base 1, a clamping assembly 2 and a driving assembly 3, the clamping assembly 2 includes a clamping bracket 4, a clamping arm 5, a clamping rod 6 and a roller bracket 7, the clamping bracket 4 is slidably arranged on the base 1, the clamping arm 5 is arranged on the clamping bracket 4, the clamping arm 5 is hinged at one end away from the clamping bracket 4 with the clamping rod 6, the angle between the clamping arm 5 and the clamping rod 6 can be fixed, and the end of the clamping rod 6 away from the clamping arm 5 can be against the rotating workpiece 18; the number of the clamping arms 5 is two groups, and the two clamping arms 5 are symmetrically arranged with the sliding axis of the clamping bracket 4 as the symmetry axis; the roller bracket 7 includes a connecting frame 19 and a rotating frame 19 arranged on the connecting frame 19 The supporting roller 8 on the support roller 8 can be abutted against the rotating workpiece 18, the connecting frame 19 is connected to the clamping bracket 4, and the connection position of the two can be adjusted; the number of roller brackets 7 is two groups, and the two roller brackets 7 are located between the two clamping arms 5; the number of clamping assemblies 2 is two groups, and the two clamping assemblies 2 are arranged in a direction parallel to the sliding axis of the clamping bracket 4; the driving assembly 3 includes a first driver 9 and a transmission mechanism, the first driver 9 is arranged on the base 1, and the first driver 9 is respectively connected to the two clamping assemblies 2 by the transmission mechanism to drive the two clamping assemblies 2 to move at the same time, and the movement directions of the two clamping assemblies 2 are opposite.

[0040] The clamp 100 suitable for a rotating workpiece of the present invention, the clamping bracket 4 is slidably set on the base 1, and the position of the clamping component 2 can be adjusted to facilitate clamping of different positions of the rotating workpiece 18, the clamping arm 5 is set on the clamping bracket 4, the clamping arm 5 is connected to the clamping rod 6, the end of the clamping rod 6 can abut against the rotating workpiece 18, and two groups of symmetrically arranged clamping rods 6 cooperate to clamp the upper two sides of the rotating workpiece 18; at the same time, the clamping component 2 also includes a roller bracket 7, the roller bracket 7 is located below the clamping rod 6, and two supporting rollers 8 support the lower two sides of the rotating workpiece, each group of clamping components 2 uses two clamping rods 6 and two rollers to form a four-point surround support for the rotating workpiece 18 to ensure clamping stability; the two groups of clamping components 2 are arranged along the axial direction of the rotating workpiece 18, which is convenient for adjusting the clamping position and clamping length, and further improving the clamping reliability. The clamping assembly 2 of the present invention, the clamping arm 5 and the clamping rod 6 are hinged, which can adapt to the clamping of rotating workpieces 18 of different specifications. Adjusting the angle between the two can adjust the clamping force, meet the clamping of rotating workpieces 18 of different materials, and improve the adaptability of the fixture; and the supporting roller 8 is rotatably located at the bottom of the rotating workpiece 18, which is convenient for adjusting the angle of the rotating workpiece 18. The driving assembly 3 of the present invention, the first driver 9 uses a transmission mechanism to drive the two groups of clamping assemblies 2 to move, adjust the clamping length, meet the clamping requirements, and save the energy consumption and production cost of the fixture.

[0041] It needs to be explained here that the two clamping rods 6 cooperate to clamp the upper two sides of the rotating workpiece 18, and the two supporting rollers 8 support the lower two sides of the rotating workpiece. The "upper part" and "lower part" here refer to the upper and lower parts of the axis of the rotating workpiece 18, and the "two sides" refer to the two sides in the horizontal direction of the rotating workpiece 18, thereby forming an embracing clamp for the rotating workpiece 18 and enhancing the clamping stability.

[0042] Specifically, a clamping rod 10 is provided between the clamping arm 5 and the clamping rod 6, and the length of the clamping rod 10 can be adjusted. One end of the clamping rod 10 is hinged to the clamping arm 5, and the other end of the clamping rod 10 is hinged to one end of the clamping rod 6. Adjusting the length of the clamping rod 10 can adjust the angle between the clamping arm 5 and the clamping rod 6 to meet the clamping requirements of different rotating workpieces 18 and different forces. In this specific embodiment, the clamping rod 6 is L-shaped, the middle part of the clamping rod 6 is hinged to the clamping arm 5, and the other end of the clamping rod 6 can be abutted against the rotating workpiece 18, which ensures that the clamping rod 6 can clamp and fix the rotating workpiece 18 while facilitating the connection of the clamping rod 10.

[0043] In this specific embodiment, the end of the clamping rod 6 that contacts the rotating workpiece 18 is a structure that is inclined toward the axis of the rotating workpiece 18, that is, in each group of clamping assemblies 2, the clamping rod 6 is a structure that is inclined toward another clamping rod 6, further improving the clamping reliability. In practical applications, the end of the clamping rod 6 that contacts the rotating workpiece 18 can be set as an arc rod, and the two symmetrical clamping rods 6 form an arc structure, which is further adapted to the clamping of the rotating workpiece 18 and further improves the adaptability of the clamping assembly 2.

[0044] It should also be noted that the clamping rod 10 adopts a hydraulic cylinder, the fixed end of the hydraulic cylinder is hinged to the clamping arm 5, and the movable end of the hydraulic cylinder is hinged to the clamping rod 6. The hydraulic cylinder can accurately control the extension length of the movable end, so as to adjust the angle between the clamping arm 5 and the clamping rod 6 by telescoping the hydraulic cylinder, meet the clamping requirements of different rotating workpieces 18, adjust the clamping force, and improve the clamping safety factor while improving the clamping reliability.

[0045] In this specific embodiment, the clamping arm 5 has a mounting groove, the clamping rod 6 and the clamping rod 10 are both extended into the mounting groove, the clamping rod 6, the clamping rod 10 and the clamping arm 5 are all hinged by a pin, and the clamping arm 5 is provided with a mounting groove, which provides a stable support for the clamping rod 6 and the clamping rod 10, and at the same time provides a limit for the clamping rod 6 and the clamping rod 10 to avoid the clamping rod 6 and the clamping rod 10 from shaking and misaligning, further improving the structural stability of the clamp. The clamping rod 6, the clamping rod 10 and the clamping arm 5 are all hinged by a pin, and the type and specification of the pin can be selected and adjusted according to the specific working conditions to meet the hinge requirements and ensure the structural strength of the clamping assembly 2.

[0046] More specifically, the connecting frame 19 has a rectangular frame structure, the width of the rectangular frame structure of the connecting frame 19 is greater than the width of the clamping arm 5, the connecting frame 19 is sleeved on the clamping bracket 4 using the rectangular frame structure, and can slide along the clamping bracket 4, and the position between the connecting frame 19 and the clamping bracket 4 can be fixed by tightening with the fastening bolts, thereby ensuring the connection stability between the connecting frame 19 and the clamping bracket 4. At the same time, the position of the connecting frame 19 can be adjusted by loosening the fastening bolts, and then the position of the supporting roller 8 can be adjusted to adapt to the support and clamping of the rotating workpiece 18 of different specifications. The connecting frame 19 is connected to the clamping bracket 4 by the fastening bolts, and the connection is stable and the adjustment operation is convenient. In order to ensure the reciprocating sliding accuracy of the connecting frame 19 along the clamping bracket 4, a protrusion is set in the rectangular frame structure of the connecting frame 19, and a strip-shaped recess matched with the protrusion is set on the clamping bracket 4, and the protrusion reciprocates in the strip-shaped recess to ensure the position adjustment accuracy of the connecting frame 19.

[0047] It should also be emphasized that the clamping assembly 2 also includes a clamping head 11, which is rotatably connected to the clamping arm 5 and the two correspond one to one. The outer peripheral surface of the clamping head 11 abuts against the rotating workpiece 18, while stably clamping the rotating workpiece 18, further improving the convenience of adjusting the position of the rotating workpiece 18. The present invention uses the clamping head 11 and the supporting roller 8 to clamp and fix the rotating workpiece 18 in a surrounding manner. The clamping head 11 and the supporting roller 8 can both rotate. Even after clamping the rotating workpiece 18, the angle of the rotating workpiece 18 can still be conveniently adjusted, which provides convenience for subsequent cutting production and is conducive to realizing the cross-section customization of the rotating workpiece 18.

[0048] In other specific embodiments that can be realized by the present invention, in the clamping assembly 2, one of the clamping heads 11 is connected to a second driver, the second driver is arranged on the clamping arm 5, the output end of the second driver is transmission-connected to the clamping head 11, and the second driver can drive the clamping head 11 to rotate; the second driver drives one of the clamping heads 11 to rotate, and the friction between the clamping head 11 and the rotating workpiece 18 drives the rotating workpiece 18 to rotate, and adjusts the angle of the rotating workpiece 18. In order to increase the friction between the clamping head 11 and the rotating workpiece 18, an anti-slip pattern can be arranged on the outside of the clamping head 11.

[0049] In practical applications, the clamping head 11 and the clamping arm 5 can be set to a detachable connection mode, which is convenient for replacing the clamping head 11 to meet different clamping requirements and further improve the flexibility and adaptability of the clamp. The clamping head 11 can be set to a double-wheel structure or a wheel structure with grooves, etc. A protective layer can also be set on the outside of the clamping head 11 to provide protection for the rotating workpiece 18 while clamping, further enhancing the clamping safety of the clamp.

[0050] Furthermore, the transmission mechanism includes a transmission screw 12 and a screw head 13. The transmission screw 12 is rotatably arranged on the base 1, and the output end of the first driver 9 is transmission-connected to the transmission screw 12, the screw head 13 is threadedly connected to the transmission screw 12, and the screw head 13 is connected to the clamping bracket 4; the number of transmission mechanisms is two groups and corresponds to the clamping assembly 2 one by one. The first driver 9 can drive the two transmission screws 12 to rotate, and the transmission screw 12 is used to drive the screw head 13 to slide back and forth along the transmission screw 12. The rotation directions of the two transmission screws 12 are opposite, thereby achieving the purpose of using the first driver 9 to drive the two clamping brackets 4 to move at the same time. The movement directions of the two clamping brackets 4 are opposite, and they move toward and away from each other, thereby improving the adjustment efficiency, adjusting the spacing between the two clamping brackets 4, and thus adjusting the clamping distance of the two clamping assemblies 2.

[0051] In this specific embodiment, the output end of the first driver 9 is connected to a motor gear 14, and the lead screw heads 13 of the two transmission mechanisms are both connected to transmission gears 15. The two transmission gears 15 are symmetrically arranged with the rotating shaft of the motor gear 14 as the symmetry axis, and the two transmission gears 15 are meshed with the motor gear 14, and the transmission gears 15 and the motor gear 14 are both bevel gears. The gear transmission structure is adopted to realize the smooth transmission of power, with a compact structure and high transmission efficiency. In other specific embodiments of the present invention, other transmission structures, such as belt transmission, chain transmission and other structures, can also be selected to meet different working conditions and improve the flexibility and adaptability of the clamp.

[0052] In order to further improve the reciprocating sliding precision of the clamping bracket 4, the clamping bracket 4 has a slide groove 16, and the base 1 has a slide rail 17 adapted to the slide groove 16. The clamping bracket 4 can be slidably arranged on the slide rail 17, and the length direction of the slide rail 17 is parallel to the axial direction of the transmission screw 12, thereby improving the reciprocating sliding precision of the clamping assembly 2. In this specific embodiment, the slide groove 16 is a dovetail groove, and the cross-sectional shape of the slide rail 17 is adapted to the slide groove 16. While improving the reciprocating motion precision of the clamping bracket 4, the clamping bracket 4 is effectively prevented from slipping, the working reliability of the clamp is improved, and the clamping safety of the clamp is further improved. In practical applications, the specific shapes of the slide groove 16 and the slide rail 17 can be adjusted to meet different working conditions and reduce the difficulty of clamp processing.

[0053] Embodiment 2

[0054] This embodiment provides a cutting system, including a cutting device and a fixture 100 for a rotating workpiece of the first embodiment. The fixture 100 for a rotating workpiece of the first embodiment is used to clamp and fix the rotating workpiece 18 and adjust the angle, so that the cutting device can perform cutting processing, thereby solving the problem of section customization. The cutting device can be a water cutting device.

[0055] The clamp 100 suitable for the rotating workpiece of the present invention drives the clamping assembly 2 to clamp by a hydraulic cylinder, and drives the clamping bracket 4 to slide and adjust the clamping length by the transmission screw 12, which effectively improves the adaptive adjustment speed of the rotating structure of different sizes and the rotating workpiece 18 requiring different clamping forces. The motor gear 14 drives the two symmetrically distributed transmission gears 15 to rotate synchronously, and the symmetrically distributed transmission gears 15 ensure the synchronous rotation of the two transmission screws 12, accelerate the clamping length adjustment speed and ensure the accuracy of the size. The clamping arm 5 can preset the hydraulic force to achieve the clamping of the appropriate force for different materials, avoiding the secondary damage to the rotating workpiece 18. The clamping head 11 can make the rotating workpiece 18 adjust the angle after clamping, so as to achieve the customization of the cross section. The roller bracket 7 of the present invention that can adjust the position at will can reasonably and conveniently adjust the support part according to the diameter of the clamped workpiece, and can customize the positioning of the eccentric rotating body, realizing a clamping method with more degrees of freedom.

[0056] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A fixture suitable for a rotating workpiece, characterized in that: include: Base; The clamping assembly comprises a clamping bracket, a clamping arm, a clamping rod and a roller bracket, the clamping bracket is slidably arranged on the base, the clamping arm is arranged on the clamping bracket, one end of the clamping arm away from the clamping bracket is hingedly connected with the clamping rod, the angle between the clamping arm and the clamping rod can be fixed, and the end of the clamping rod away from the clamping arm can be abutted against a rotating workpiece; the number of the clamping arms is two groups, and the two clamping arms are symmetrically arranged with the sliding axis of the clamping bracket as the symmetry axis; the roller bracket comprises a connecting frame and a supporting roller rotatably arranged on the connecting frame, the supporting roller can abut against a rotating workpiece, the connecting frame is connected to the clamping bracket, and the connection position of the two can be adjusted; the number of the roller bracket is two groups, and the two roller brackets are located between the two clamping arms; The number of the clamping assemblies is two groups, and the two clamping assemblies are arranged in a direction parallel to the sliding axis of the clamping bracket; The driving assembly includes a first driver and a transmission mechanism. The first driver is arranged on the base. The first driver is connected to the two clamping assemblies by the transmission mechanism to drive the two clamping assemblies to move at the same time, and the movement directions of the two clamping assemblies are opposite.

2. The fixture for a rotating workpiece according to claim 1, characterized in that: A clamping rod is arranged between the clamping arm and the clamping rod, the length of the clamping rod can be adjusted, one end of the clamping rod is hinged to the clamping arm, the other end of the clamping rod is hinged to one end of the clamping rod, the clamping rod is L-shaped, the middle part of the clamping rod is hinged to the clamping arm, and the other end of the clamping rod can be abutted against the rotating workpiece.

3. The fixture for a rotating workpiece according to claim 2, characterized in that: The clamping rod adopts a hydraulic cylinder, the fixed end of the hydraulic cylinder is hinged to the clamping arm, and the movable end of the hydraulic cylinder is hinged to the clamping rod.

4. The fixture for a rotating workpiece according to claim 2, characterized in that: The clamping arm has a mounting groove, the clamping rod and the clamping rod both extend into the mounting groove, and the clamping rod, the clamping rod and the clamping arm are all hinged by a pin shaft.

5. The fixture for a rotating workpiece according to claim 1, characterized in that: The connecting frame is sleeved on the clamping bracket and is tightened by fastening bolts.

6. The fixture for a rotating workpiece according to any one of claims 1 to 5, characterized in that: The clamping assembly also includes a clamping head, which is rotatably connected to the clamping arm and the two correspond to each other one by one, and the outer peripheral surface of the clamping head abuts against the rotating workpiece.

7. The fixture for a rotating workpiece according to claim 6, characterized in that: In the clamping assembly, one of the clamping heads is connected to a second driver, the second driver is arranged on the clamping arm, the output end of the second driver is transmission-connected to the clamping head, and the second driver can drive the clamping head to rotate; The clamping head is detachably connected to the clamping arm.

8. The fixture for a rotating workpiece according to any one of claims 1 to 5, characterized in that: The transmission mechanism includes a transmission screw and a screw head, the transmission screw is rotatably arranged on the base, and the output end of the first driver is transmission-connected to the transmission screw, the screw head is threadedly connected to the transmission screw, and the screw head is connected to the clamping bracket; the number of the transmission mechanisms is two groups and corresponds one-to-one to the clamping assemblies.

9. The fixture for a rotating workpiece according to claim 8, characterized in that: The output end of the first driver is connected to a motor gear, and the screw heads of the two transmission mechanisms are both connected to transmission gears. The two transmission gears are symmetrically arranged with the rotating shaft of the motor gear as the symmetry axis, and the two transmission gears are both meshed with the motor gear. The transmission gear and the motor gear are both bevel gears.

10. The fixture for a rotating workpiece according to claim 8, characterized in that: The clamping bracket has a slide groove, the base has a slide rail matched with the slide groove, the clamping bracket is slidably arranged on the slide rail, and the length direction of the slide rail is parallel to the axial direction of the transmission screw.

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