A novel rotary clamping fixture

Abstract

This invention proposes a novel rotary clamping fixture, comprising a pair of rotating components arranged in a mirror image. One rotating component is driven by a linear drive module to move closer to or away from the other rotating component. The rotating components provide power for vertical circumferential rotation, and the rotation of the two rotating components is synchronized. An axial adjustment component is disposed on the rotation output end of the rotating components to provide a Z-axis degree of freedom. A clamping component is connected to the Z-axis drive end of the axial adjustment component and includes two clamping plates arranged at intervals opposite each other, and a drive group for driving the two clamping plates closer to or further apart. This invention provides two degrees of freedom working in tandem, allowing the workpiece to rotate and adjust its height and position in space after a single clamping, greatly improving the flexibility and overall processing efficiency of multi-faceted and complex angle machining.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, specifically, it demonstrates a novel rotary clamping fixture. Background Technology

[0002] In order to improve processing efficiency, some workpieces need to be clamped in a fixture during the machining process. The fixture needs to be fixed to the worktable of the equipment through tooling, which greatly reduces the time spent repeatedly installing the workpiece and thus improves processing efficiency. However, in actual machining, the processing content is complex and varied. The machining angle of the workpiece needs to be adjusted and clamped and positioned multiple times to complete the machining process.

[0003] To address the aforementioned issues, Chinese Patent Publication No. CN220331087U proposes a rotary clamping fixture for parts processing, comprising a base, two sets of clamping assemblies, and a drive assembly. The two sets of clamping assemblies are arranged opposite each other, and the drive assembly can drive the first clamping assembly and the second clamping assembly to move closer or further apart to fix the parts. The clamping assembly includes a connecting sleeve, a connecting shaft, a limiting plate, and a clamping block. The clamping block drives the parts to rotate, thereby adjusting the processing angle of the parts.

[0004] However, in the aforementioned existing technology, the rotation of the limiting plate does not have much effect on workpiece processing. What is actually needed is a change in spatial angle, and the problem of difficulty in adjusting the angle still exists. Utility Model Content

[0005] The purpose of this invention is to provide a novel rotary clamping fixture that can adjust the machining angle of the workpiece and has strong versatility.

[0006] The technical solution is as follows:

[0007] A novel rotary clamping fixture includes:

[0008] A pair of rotating components arranged in a mirror image, one of which is driven by a straight-line drive module to move closer to or further away from the other rotating component. The rotating component is used to provide power for vertical circumferential rotation, and the two rotating components rotate synchronously.

[0009] An axial adjustment component is located on the rotation output end of the rotary component to provide Z-axis degree of freedom;

[0010] The clamping assembly, connected to the Z-axis drive end of the axial adjustment assembly, includes two clamping plates arranged at intervals opposite each other, and a drive group for driving the two clamping plates to move closer or further apart.

[0011] In addition, the above embodiments of this utility model may also have the following additional technical features:

[0012] According to one embodiment of this utility model, a locking pin is vertically arranged outward from the middle of the inner wall of the clamping plate, and the locking pins on the two clamping plates are arranged opposite each other from left to right. The left-right opposing locking pins arranged in the middle of the inner walls of the two clamping plates provide a precise positioning reference and anti-rotation stop point for clamping workpieces (especially parts with holes).

[0013] The diameter of the locking pin gradually decreases outwards. This tapered design allows the locking pin to better adapt to different hole diameters or to accommodate minor deviations in the positioning hole. The tapered surface also enables "accurate centering," guiding the hole / workpiece towards the center of the pin during clamping, achieving higher precision self-centering positioning.

[0014] According to one embodiment of this utility model, the clamping assembly includes a first mounting base, a first rotary motor, and a bidirectional lead screw transmission mechanism. The first rotary motor is mounted on the first mounting base, and its output shaft is connected to the bidirectional lead screw transmission mechanism. The bidirectional lead screw transmission mechanism is connected to two clamping plates respectively. The first rotary motor drives the bidirectional lead screw transmission mechanism to move, causing the two clamping plates to move towards or away from each other. By using the bidirectional lead screw transmission mechanism as the core of the drive assembly, the movement of the two clamping plates is always symmetrical and synchronously opposite.

[0015] The first mounting base is provided with a first guide rail, and the two clamping plates are slidably engaged with the first guide rail by a first slider. This ensures that the clamping plates always move in a straight line along a set direction (usually perpendicular to the axis of rotation) to avoid swaying or lateral displacement.

[0016] According to one embodiment of this utility model, the axial adjustment assembly includes a second mounting base, a second rotary motor, and a first single-axis lead screw transmission mechanism. The second rotary motor is mounted on the second mounting base, and its output shaft is connected to the first single-axis lead screw transmission mechanism. The first single-axis lead screw transmission mechanism is connected to the clamping assembly. The second rotary motor drives the first single-axis lead screw transmission mechanism to move, and the first single-axis lead screw transmission mechanism drives the clamping assembly to move linearly. The first single-axis lead screw transmission mechanism provides high-precision and stable linear motion, while the second rotary motor enables precise and controllable vertical displacement adjustment.

[0017] The second mounting base is equipped with a second guide rail, and the second mounting base is slidably engaged with the second guide rail via a second slider. This provides crucial guidance and support for the Z-axis lifting movement of the clamping assembly.

[0018] According to one embodiment of this utility model, the rotating assembly includes a base, a third rotary motor, a rotary gear, and a drive gear. The inner rings of the third rotary motor and the rotary gear are respectively mounted on the base. The output shaft of the third rotary motor is connected to the drive gear, and the drive gear meshes with the outer ring of the rotary gear for transmission. The axial adjustment assembly is connected to the outer ring of the rotary gear. The structure of the drive gear (small gear) driving the rotary gear (large gear ring) is a reliable and efficient method of speed reduction and torque increase. The power of the third rotary motor is stably and accurately transmitted to the outer ring of the rotary gear through the meshing of the drive gear, thereby driving the clamping assembly to rotate.

[0019] According to one embodiment of this utility model, the linear drive module includes a third mounting base, a fourth rotary motor, and a second single-axis lead screw transmission mechanism. The fourth rotary motor is mounted on the third mounting base, and its output shaft is connected to the second single-axis lead screw transmission mechanism. The second single-axis lead screw transmission mechanism is connected to the rotating component. The fourth rotary motor drives the second single-axis lead screw transmission mechanism to move, and the second single-axis lead screw transmission mechanism drives the rotating component to move linearly. The cooperation between the fourth rotary motor and the second single-axis lead screw transmission mechanism drives one of the rotating components to move horizontally. Similarly, the high precision and controllability of the lead screw transmission ensure that the horizontal displacement of the rotating component is accurate and stable.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: Compared with the existing technology's single degree of freedom (circumferential rotation) and limited angle adjustment design, the technical solution of this utility model can provide two degrees of freedom to work together, so that the workpiece can be rotated and its height position adjusted in space after one clamping, which greatly improves the flexibility and overall processing efficiency of multi-faceted processing and complex angle processing. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a novel rotary clamping fixture according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the rotating component part in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the axial adjustment component in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the clamping component in an embodiment of the present invention;

[0025] The relevant markings in the attached diagram are as follows: 1-Rotating component, 2-Linear drive module, 3-Axial adjustment component, 4-Clamping component; 11-Base, 12-Third rotary motor, 13-Rotating gear, 14-Drive gear; 21-Third mounting base, 22-Fourth rotary motor, 23-Second single-axis lead screw transmission mechanism; 31-Second mounting base, 32-Second rotary motor, 33-First single-axis lead screw transmission mechanism, 34-Second guide rail, 35-Second slider; 41-Clamping plate, 42-Pin, 43-First mounting base, 44-First rotary motor, 45-Bidirectional lead screw transmission mechanism, 46-First guide rail, 47-First slider. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown in the figure, this utility model embodiment proposes a novel rotary clamping fixture, including two rotating components 1, as well as an axial adjustment component 3 and a clamping component 4 used in conjunction with the rotating components 1.

[0028] The two rotating components 1 have the same configuration and are arranged in a mirror symmetrical manner. One of the rotating components 1 will be driven by a straight-line drive module 2 to move closer to or further away from the other rotating component 1. That is to say, only one of the two rotating components 1 is movable. This is mainly to facilitate the picking up and putting down of workpieces. The rotating components are mainly used to provide power for vertical circumferential rotation, and the rotation of the two rotating components is synchronized. The rotating components are used to realize the vertical circumferential rotation adjustment of the workpiece.

[0029] The axial adjustment component 3 is located on the rotation output end of the rotary component 1. It provides Z-axis freedom, allowing the workpiece to be adjusted in the height direction. The clamping component 4 is connected to the Z-axis drive end of the axial adjustment component 3. It includes two clamping plates 41 arranged at intervals and opposite each other, and a drive assembly for driving the two clamping plates 41 to move closer or further apart. The clamping component is responsible for firmly clamping the workpiece between the two rotary components. The two clamping plates ensure the uniformity and controllability of the clamping force. Then, the angle and height position of the workpiece are adjusted by the rotary component and the axial adjustment component respectively to facilitate processing.

[0030] Compared to existing technologies with a single degree of freedom (circumferential rotation) and limited angle adjustment, the technical solution of this embodiment can provide two degrees of freedom to work together. The workpiece can adjust both its processing height and its processing angle, which facilitates the processing of the workpiece and greatly improves the processing efficiency. The tooling angle adjustment is also very convenient, and the operator can easily disassemble and assemble the workpiece.

[0031] In some embodiments of this application, in order to further enhance the clamping effect of the clamping plate 41, a locking pin 42 is provided vertically outward from the middle of the inner wall of the clamping plate 41. The locking pins 42 on the two clamping plates 41 are opposite to each other. The locking pins 42 opposite to each other in the middle of the inner walls of the two clamping plates 41 provide a precise positioning reference and anti-rotation stop point for clamping workpieces (especially parts with holes), thus broadening the application range.

[0032] The diameter of the aforementioned locking pin 42 gradually decreases outwards. This tapered design allows the locking pin to better adapt to different hole diameters or to accommodate minor deviations in the positioning holes. The tapered surface also enables "accurate centering," guiding the hole / workpiece towards the center of the pin during clamping, achieving higher precision self-centering positioning. Furthermore, the tapered locking pin facilitates its smooth insertion into the pre-drilled positioning hole of the workpiece, reducing alignment difficulties. It is also compatible with different hole diameters, reducing the need for locking pin replacement and improving the tooling's adaptability to different sizes of workpieces.

[0033] It should be noted that one possible implementation of the clamping assembly 4 includes a first mounting base 43, a first rotary motor 44, and a bidirectional lead screw transmission mechanism 45. The first rotary motor 44 is mounted on the first mounting base 43, and the output shaft of the first rotary motor 44 is connected to the bidirectional lead screw transmission mechanism 45. The bidirectional lead screw transmission mechanism 45 is arranged along the length direction of the first mounting base 43 and is connected to two clamping plates 41 respectively. The first rotary motor 44 is used to drive the bidirectional lead screw transmission mechanism 45 to move, and the bidirectional lead screw transmission mechanism 45 drives the two clamping plates 41 to move towards or away from each other.

[0034] The bidirectional lead screw drive mechanism is used as the core of the drive group, so that the movement of the two clamping plates is always symmetrical and synchronously opposite. The lead screw drive itself has good precision and controllability. Together with the first rotary motor, it realizes the precise adjustment of the clamping distance and ensures the clamping safety and reliability during the processing.

[0035] Furthermore, a first guide rail 46 is provided on the first mounting base 43, and the two clamping plates 41 are slidably engaged with the first guide rail 46 by a first slider 47. The cooperative action of the first slider 47 and the first guide rail 46 ensures that the clamping plates 41 always move in a straight line along a set direction (usually perpendicular to the axis of rotation), avoiding swaying or lateral displacement. In addition, the first guide rail bears most of the lateral load, reducing the pressure of bending moment on the lead screw, thereby protecting the lead screw.

[0036] It should be noted that one possible implementation of the axial adjustment assembly 3 includes a second mounting base 31, a second rotary motor 32, and a first single-axis lead screw transmission mechanism 33. The second rotary motor 32 is mounted on the second mounting base 31, and its output shaft is connected to the first single-axis lead screw transmission mechanism 33. The first single-axis lead screw transmission mechanism 33 is arranged along the length of the second mounting base 31 and is connected to the clamping assembly 4. The second rotary motor 32 drives the first single-axis lead screw transmission mechanism 33 to move, which in turn drives the clamping assembly 4 to move linearly. The first single-axis lead screw transmission mechanism provides high-precision and stable linear motion, while the second rotary motor enables precise and controllable vertical displacement adjustment. Axial adjustment is not affected by rotational motion, thereby achieving height adjustment of the clamping assembly and causing a change in the height of the workpiece on it.

[0037] Furthermore, a second guide rail 34 is provided on the second mounting base 31. The second mounting base 31 is slidably engaged with the second guide rail 34 by a second slider 35. The cooperation between the second slider 35 and the second guide rail 34 provides key guidance and support for the Z-axis lifting movement of the clamping assembly 4, preventing the workpiece from shifting or shaking during the lifting process, ensuring the Z-axis positioning accuracy. Similarly, it bears lateral loads, protects the single-axis lead screw transmission mechanism of the Z-axis, and extends its accuracy life.

[0038] It should be noted that one possible implementation of the rotating component 1 includes a base 11, a third rotary motor 12, a rotary gear 13, and a drive gear 14. The inner rings of the third rotary motor 12 and the rotary gear 13 are respectively mounted on both sides of the base 11. The output shaft of the third rotary motor 12 is connected to the drive gear 14. The drive gear 14 meshes with the outer ring of the rotary gear 13 for transmission. The axial adjustment component 3 is connected to the outer ring of the rotary gear 13. As is well known, the inner and outer rings of the rotary gear 13 can rotate relative to each other. The structure of the drive gear (small gear) driving the rotary gear (large gear ring) is a reliable and efficient method of speed reduction and torque increase. By selecting an appropriate reduction ratio, the required low-speed, high-torque output can be obtained. The power of the third rotary motor is stably and accurately transmitted to the outer ring of the rotary gear through the meshing of the drive gear, thereby driving the axial adjustment component and the clamping component to rotate together, resulting in high rotational accuracy.

[0039] It should be noted that one possible implementation of the linear drive module 2 includes a third mounting base 21, a fourth rotary motor 22, and a second single-axis lead screw transmission mechanism 23. The fourth rotary motor 22 is mounted on the third mounting base 21, and its output shaft is connected to the second single-axis lead screw transmission mechanism 23. The second single-axis lead screw transmission mechanism 23 is arranged along the length of the third mounting base 21 and is connected to the rotating component 1. The fourth rotary motor 22 drives the second single-axis lead screw transmission mechanism 23, which in turn drives the rotating component 1 to move linearly, thereby moving it closer to or further away from another rotating component 1. The cooperation between the fourth rotary motor and the second single-axis lead screw transmission mechanism drives one of the rotating components to move horizontally. The high precision and controllability of the lead screw transmission ensure that the horizontal displacement of the rotating component is accurate and stable.

[0040] It should also be noted that the descriptions of the bidirectional lead screw drive mechanism, the first single-axis lead screw drive mechanism, the rotary gear, and the second single-axis lead screw drive mechanism in the embodiments of this application are all based on common knowledge, and the mechanical structure and implementation principle of the above-mentioned mechanism components can be understood by those skilled in the art.

[0041] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A novel rotary clamping fixture, characterized in that, include: A pair of rotating components (1) arranged in a mirror image, one of which is driven by a straight-line drive module (2) to move closer to or further away from the other rotating component. The rotating component (1) is used to provide power for vertical circumferential rotation. The two rotating components (1) rotate synchronously. An axial adjustment component (3) is disposed on the rotation output end of the rotation component (1) to provide Z-axis freedom; The clamping assembly (4) is connected to the Z-axis drive end of the axial adjustment assembly (3), and includes two clamping plates (41) arranged at intervals relative to each other, and a drive group for driving the two clamping plates (41) to move closer or further apart from each other.

2. The novel rotary clamping fixture according to claim 1, characterized in that, The clamping plate (41) has a locking pin (42) vertically arranged outward from the middle of its inner wall, and the locking pins (42) on the two clamping plates (41) are opposite each other.

3. The novel rotary clamping fixture according to claim 2, characterized in that, The diameter of the locking pin (42) gradually decreases outwards.

4. The novel rotary clamping fixture according to claim 1, characterized in that, The clamping assembly (4) includes a first mounting base (43), a first rotary motor (44), and a bidirectional lead screw transmission mechanism (45). The first rotary motor (44) is mounted on the first mounting base (43). The output shaft of the first rotary motor (44) is connected to the bidirectional lead screw transmission mechanism (45). The bidirectional lead screw transmission mechanism (45) is connected to the two clamping plates (41) respectively. The first rotary motor (44) is used to drive the bidirectional lead screw transmission mechanism (45) to move. The bidirectional lead screw transmission mechanism (45) drives the two clamping plates (41) to move towards or away from each other.

5. A novel rotary clamping fixture according to claim 4, characterized in that, The first mounting base (43) is provided with a first guide rail (46), and the two clamping plates (41) are slidably engaged with the first guide rail (46) by a first slider (47).

6. The novel rotary clamping fixture according to claim 1, characterized in that, The axial adjustment assembly (3) includes a second mounting base (31), a second rotary motor (32), and a first single-axis lead screw transmission mechanism (33). The second rotary motor (32) is mounted on the second mounting base (31). The output shaft of the second rotary motor (32) is connected to the first single-axis lead screw transmission mechanism (33). The first single-axis lead screw transmission mechanism (33) is connected to the clamping assembly (4). The second rotary motor (32) is used to drive the first single-axis lead screw transmission mechanism (33) to move. The first single-axis lead screw transmission mechanism (33) drives the clamping assembly (4) to move linearly.

7. A novel rotary clamping fixture according to claim 6, characterized in that, The second mounting base (31) is provided with a second guide rail (34), and the second mounting base (31) is slidably engaged with the second guide rail (34) by a second slider (35).

8. A novel rotary clamping fixture according to claim 1, characterized in that, The rotating assembly (1) includes a base (11), a third rotating motor (12), a rotary gear (13), and a drive gear (14). The inner rings of the third rotating motor (12) and the rotary gear (13) are respectively mounted on the base (11). The output shaft of the third rotating motor (12) is connected to the drive gear (14). The drive gear (14) meshes with the outer ring of the rotary gear (13) for transmission. The axial adjustment assembly (3) is connected to the outer ring of the rotary gear (13).

9. A novel rotary clamping fixture according to claim 1, characterized in that, The linear drive module (2) includes a third mounting base (21), a fourth rotary motor (22), and a second single-axis lead screw transmission mechanism (23). The fourth rotary motor (22) is mounted on the third mounting base (21). The output shaft of the fourth rotary motor (22) is connected to the second single-axis lead screw transmission mechanism (23). The second single-axis lead screw transmission mechanism (23) is connected to the rotating component (1). The fourth rotary motor (22) is used to drive the second single-axis lead screw transmission mechanism (23) to move. The second single-axis lead screw transmission mechanism (23) drives the rotating component (1) to move linearly.

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