A mechanical gripper device manufactured by a fixed mechanical fixture for machining.

Abstract

This invention relates to the field of mechanical gripper technology, and in particular to a mechanical gripper device for manufacturing fixed mechanical fixtures for machining. The device includes gripper assemblies and a chuck. The gripper assemblies are mounted on the chuck, and several gripper assemblies are arranged to form a gripping area for holding a workpiece. The chuck is equipped with a gripping drive device for driving the gripper assemblies closer to or further away from each other, thereby achieving the gripping or release of the workpiece. In use, a second drive mechanism switches between the first and second grippers of the gripper assemblies to grip square or round workpieces. This allows the device to be applied to workpieces of different shapes and sizes, avoiding the problems of existing technologies where a single mechanical gripper is often only suitable for workpieces of one shape, requiring different grippers for different workpieces, resulting in significant space, procurement, production, and maintenance costs.

Description

Technical Field

[0001] This invention relates to the field of mechanical gripper technology, and in particular to a mechanical gripper device for manufacturing a fixed mechanical clamp for machining. Background Technology

[0002] In the production process, any process that changes the shape, size, position, and properties of the object being produced, making it a finished or semi-finished product, is called a technological process. A technological process consists of one or more sequentially arranged operations, and an operation consists of several steps.

[0003] In machining production, it is often necessary to fix the workpiece to be processed, which requires the use of mechanical grippers to hold the workpiece. In the existing technology, a single mechanical gripper is often only suitable for workpieces of one shape, such as round workpieces and square workpieces. Different grippers are also required for hollow workpieces and solid workpieces. As a result, multiple types of grippers are required in the machining production process, which requires a large amount of space, procurement, production and maintenance costs. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that, in order to solve the problem that in the prior art, a single mechanical gripper is often only suitable for workpieces of one shape, and different grippers are required for different workpieces, which requires a large space, procurement, production and maintenance costs, a mechanical gripper device for machining is provided by mechanical manufacturing of a fixed mechanical fixture.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a mechanical gripper device for mechanical manufacturing of a fixed mechanical fixture for machining, including a gripper assembly and a chuck, wherein the gripper assembly is disposed on the chuck, and a plurality of gripper assemblies are provided, the plurality of gripper assemblies surrounding a gripping area for gripping a workpiece, and the chuck is provided with a gripping drive device for driving the gripper assemblies to move closer or further away, thereby realizing the gripping or release of the workpiece;

[0006] The gripper assembly includes a second rotating shaft, a first gripper, and a second gripper. Both the first and second grippers are mounted on the second rotating shaft and are located on the same plane. The gripping drive device is equipped with a second drive mechanism that is kinetically connected to the second rotating shaft. This second drive mechanism is used to switch the gripping of the workpiece between the first and second grippers, thus enabling the gripping of either square or round workpieces. Compared to existing technologies, this solution uses the second drive mechanism to switch between the first and second grippers of the gripper assembly, achieving the gripping of either square or round workpieces. This makes the device applicable to workpieces of different shapes and sizes.

[0007] In some preferred embodiments, the first gripper and the second gripper are spaced apart and arranged parallel to each other.

[0008] In some preferred embodiments, rubber anti-slip blocks are provided on the contact surfaces of the first and second grippers with the workpiece.

[0009] In some preferred embodiments, the second drive mechanism includes a second motor, the output end of which is connected to a second rotating shaft and used to control the rotation of the gripper assembly, thereby switching between the first gripper and the second gripper gripping the workpiece.

[0010] In some preferred embodiments, the clamping drive device includes a third motor and a transmission screw. The third motor is fixedly connected to the chuck, the transmission screw is rotatably mounted on the chuck, the transmission screw is arranged radially along the chuck, and the gripper assembly is threadedly connected to the transmission screw.

[0011] In some preferred embodiments, a guide mechanism is provided between the chuck and the gripper assembly to prevent the gripper assembly from shifting.

[0012] In some preferred embodiments, the guiding mechanism includes a slider, and the chuck has a groove along the axial direction of the transmission screw. The groove matches the slider, and the slider is slidably disposed in the groove. One end of the slider is threadedly connected to the transmission screw, and the second driving mechanism is disposed on the slider.

[0013] In some preferred embodiments, the chuck is further included as a fixed base and a third drive mechanism disposed on the fixed base, the third drive mechanism being used to drive the chuck to rotate.

[0014] In some preferred embodiments, the third drive mechanism includes a first motor, which is connected to the chuck via a first rotating shaft.

[0015] In some preferred embodiments, the chuck is formed by splicing together several gripper mounting discs, and the gripper mounting discs are correspondingly arranged with the gripper assemblies.

[0016] The beneficial effects of the present invention are as follows: When the mechanical gripper device of the present invention for machining is used, the first gripper and the second gripper of the gripper assembly are switched by the second drive mechanism to achieve the clamping of square or round workpieces. This makes the device applicable to workpieces of different shapes and sizes, avoiding the problems of existing technologies where a single mechanical gripper is often only suitable for workpieces of one shape, and different grippers are required for different workpieces, resulting in large space, procurement, production and maintenance costs. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a partial right front axonometric structural schematic diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the rear structure of the present invention;

[0020] Figure 3 This is a partial front view schematic diagram of the structure of the present invention;

[0021] Figure 4 This is a schematic diagram illustrating the effect of the present invention when holding a circular workpiece;

[0022] Figure 5 This is a schematic diagram illustrating the effect of the present invention when holding a circular hollow workpiece;

[0023] Figure 6 This is a schematic diagram illustrating the effect of the present invention when holding a square workpiece;

[0024] Figure 7 This is a schematic diagram illustrating the effect of the present invention when clamping a square hollow workpiece;

[0025] Figure 8 This is a side cross-sectional view of the gripper mounting disc in this invention.

[0026] Figure 9 This is a cross-sectional schematic diagram of the clamp fixing plate and clamps in this invention.

[0027] In the diagram: 1. Fixed base; 2. First motor; 3. Bearing; 4. First rotating shaft; 5. Fixture fixed base; 6. Gripper mounting plate; 7. Slide groove; 8. Slider; 9. Second motor; 10. Second rotating shaft; 11. Gripper fixing plate; 12. Clamping drive device; 13. First gripper mounting groove; 14. Second gripper mounting groove; 15. First gripper; 16. Second gripper; 17. Guide groove; 18. Guide bar; 19. Rubber anti-slip block; 20. First mounting plate; 21. Second mounting plate; 22. Third motor; 23. Transmission screw; 24. First screw hole; 25. Second screw hole; 26. Bolt. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the embodiments:

[0029] This invention is not limited to the specific embodiments listed below. Those skilled in the art can implement this invention using various other specific embodiments based on the content disclosed herein. Any modifications or alterations made to the design structure and concept of this invention fall within the protection scope of this invention. It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0030] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] Example 1

[0033] like Figure 1-9As shown, a mechanical gripper manufactured by a machining fixed mechanical gripper includes a fixed base 1. A first motor 2 and a bearing 3 are mounted on the top of the fixed base 1. A first rotating shaft 4 is provided in the inner ring of the bearing 3. One end of the first rotating shaft 4 is fixed to the output shaft of the first motor 2, and the other end of the first rotating shaft 4 is fixed to a clamping fixture fixed base 5. Six gripper mounting discs 6 are screwed onto the clamping fixture fixed base 5. To prevent the clamping assembly from being overloaded, a sliding groove 7 is provided between the front and back of the gripper mounting disc 6. A slider 8 is slidably mounted inside the sliding groove 7. A second motor 9 is mounted on the back of the slider 8. The output shaft of the second motor 9 is connected to a second rotating shaft 10. The second rotating shaft 10 passes through the slider 8 and is connected to the gripper assembly. A clamping drive device 12 is installed on the back of the gripper mounting plate 6. The clamping drive device 12 is connected to the slider 8 for transmission. Each gripper mounting plate 6 is equipped with a corresponding clamping component. The clamping components on the six gripper mounting plates 6 form a clamping area for clamping workpieces. The gripper component includes a gripper fixing plate 11. The gripper fixing plate 11 is provided with a first gripper mounting groove 13 and a second gripper mounting groove 14. A first gripper 15 for clamping round workpieces and a second gripper 16 for clamping square workpieces are respectively inserted and installed inside the first gripper mounting groove 13 and the second gripper mounting groove 14. The first gripper 15 and the second gripper 16 are arranged parallel to each other and spaced apart. The first gripper 15 and the second gripper 16 are located on the same plane.

[0034] One side of the gripper mounting plate 6 is provided with a guide groove 17, and the other side of the gripper mounting plate 6 is provided with a guide bar 18. Two adjacent gripper mounting plates 6 are connected and enclosed to form a chuck by the guide groove 17 and the guide bar 18.

[0035] Rubber anti-slip blocks 19 are provided on the inner and outer sides of the second jaw 16 that holds a square workpiece and on the inner and outer sides of the first jaw 15 that holds a round workpiece.

[0036] The clamping drive device 12 includes a first mounting plate 20 and a second mounting plate 21. A third motor 22 is mounted on the first mounting plate 20. The output shaft of the third motor 22 is fixed to the transmission screw 23. The other end of the transmission screw 23 is rotatably connected to the second mounting plate 21. The transmission screw 23 passes through the slider 8 and is connected to it by screw drive. The clamping drive device 12 controls the gripper assembly to move closer or further away, so that the clamping assembly can clamp or release the workpiece.

[0037] The first jaw mounting groove 13 and the second jaw mounting groove 14 are provided with a first screw hole 24. The first jaw 15 that holds a round workpiece and the second jaw 16 that holds a square workpiece are both provided with a second screw hole 25. The first jaw 15 and the first jaw mounting groove 13, and the second jaw 16 and the second jaw mounting groove 14 are respectively connected and fixed to the corresponding first screw hole 24 and second screw hole 25 by bolts 26.

[0038] In the assembly of each component, the first jaw 15 for clamping a round workpiece and the second jaw 16 for clamping a square workpiece are respectively installed in the first jaw mounting groove 13 and the second jaw mounting groove 14 on each jaw mounting plate 6 by bolts 26. Each jaw mounting plate 6 is screwed onto the fixture fixing base 5 to complete the assembly of the device.

[0039] In use, the clamping jaw fixing plate 11 is rotated and adjusted according to the workpiece to be clamped. First, the third motor 22 is controlled to drive the transmission screw 23 to rotate according to the size of the workpiece. The transmission screw 23 and the slider 8 are driven by the screw drive to move the slider 8, thereby adjusting the position of the clamping jaw fixing plate 11. This allows the clamping jaws to be adjusted to be closer or farther apart, so that the second clamping jaw 16 for clamping square workpieces or the first clamping jaw 15 for clamping round workpieces can clamp the workpiece tightly. When clamping a square workpiece, the second motor 9 is controlled to drive the second rotating shaft 10 to rotate, thereby driving the clamping jaw fixing plate 11 to rotate, so that the side of the second clamping jaw 16 for clamping square workpieces with the rubber anti-slip clamping block 19 is mounted. The rubber anti-slip blocks 19 on the two second jaws 16 holding the square workpiece face inwards, with the top and bottom facing the top and bottom surfaces of the square workpiece, respectively. The rubber anti-slip blocks 19 on the two second jaws 16 on the left and right sides of the square workpiece face the left and right sides, respectively. This allows the clamping drive device 12 to tightly clamp and fix the square workpiece on all four sides. When a round workpiece needs to be clamped, the second motor 9 drives the second rotating shaft 10 to rotate until the inner side of the first jaw 15 holding the round workpiece faces the outer side of the round workpiece, thus controlling the clamping drive device 12. The third motor 22 drives the gripper fixing plate 11 to move closer and clamp the circular workpiece. When it is necessary to fix hollow circular or square workpieces, the second motor 9 is controlled to drive the gripper fixing plate 11 to rotate so that the outer side of the first gripper 15 holding the circular workpiece faces the inner wall of the hollow circular workpiece, or to drive the gripper fixing plate 11 to rotate so that the second gripper 16 holding the square workpiece faces the inner side of the hollow square workpiece. After the hollow circular or hollow square workpiece is placed on the outside of the workpiece gripper, the third motor 22 can be controlled to drive the slider 8 to move and tighten and fix the hollow workpiece. In summary, this device can be applied to the clamping and fixing of square and circular workpieces, and can also be applied to solid workpieces. The device can clamp and fix workpieces, including hollow workpieces. It can process workpieces of various shapes and sizes with a single unit, reducing the types of clamps required in machining and saving production, procurement, and maintenance costs. The first motor 2 can drive the fixture fixing seat 5 and the chuck to rotate, and drive the clamped workpieces in the clamping area formed by the clamping jaw assembly to rotate. When it is necessary to replace the second jaw 16 for clamping square workpieces or the first jaw 15 for clamping round workpieces, simply unscrew the bolt 26 to remove and replace the second jaw 16 or the first jaw 15. When it is necessary to replace a single jaw mounting plate 6, simply release the clamping jaw mounting plate 6 from the fixture fixing seat 5 to remove it, which is convenient for replacement and maintenance.

[0040] The above description, based on the preferred embodiments of the present invention, provides inspiration. Those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification but must be determined according to the claims.

Claims

1. A mechanical gripper device for manufacturing a fixed mechanical fixture for machining, comprising a gripper assembly, characterized in that: It also includes a chuck, the gripper assembly is disposed on the chuck, and there are several gripper assemblies. The several gripper assemblies surround a gripping area for gripping the workpiece. The chuck is provided with a gripping drive device for driving the gripper assemblies to move closer or further away, thereby realizing the gripping or release of the workpiece. The gripper assembly includes a second rotating shaft, a first gripper, and a second gripper. Both the first and second grippers are mounted on the second rotating shaft and are located on the same plane. The clamping drive device is equipped with a second drive mechanism that is pulsatorically connected to the second rotating shaft. The second drive mechanism is used to switch the gripping of the workpiece by the first or second gripper, thereby switching between gripping a square or round workpiece. When gripping a square workpiece, the second drive mechanism switches the inner sides of the rubber anti-slip blocks mounted on each of the second grippers to face the top, bottom, left, and right sides of the square workpiece. When gripping a round workpiece, the second drive mechanism switches the inner sides of the rubber anti-slip blocks mounted on each of the first grippers to face the outer side of the round workpiece. When gripping a fixed hollow round workpiece or a square hollow workpiece, the second drive mechanism drives the outer sides of each of the first grippers to face the inner wall of the round hollow workpiece and grip the round workpiece, or drives the second grippers to face the inner side of the square hollow workpiece and grip the round workpiece. The first and second grippers are spaced apart and arranged parallel to each other. Rubber anti-slip blocks are provided on the contact surfaces of the first and second grippers and the workpiece.

2. The mechanical gripper device for manufacturing a fixed mechanical jig for machining according to claim 1, characterized in that: The second drive mechanism includes a second motor, the output end of which is connected to a second rotating shaft and used to control the rotation of the gripper assembly, thereby switching between the first gripper and the second gripper gripping the workpiece.

3. A mechanical gripper device for manufacturing a fixed mechanical jig for machining according to claim 1 or 2, characterized in that: The clamping drive device includes a third motor and a transmission screw. The third motor is fixedly connected to the chuck, and the transmission screw is rotatably mounted on the chuck. The transmission screw is arranged radially along the chuck, and the gripper assembly is threadedly connected to the transmission screw.

4. The mechanical gripper device for manufacturing a fixed mechanical jig for machining according to claim 3, characterized in that: A guide mechanism is provided between the chuck and the gripper assembly to prevent the gripper assembly from shifting.

5. The mechanical gripper device for manufacturing a fixed mechanical jig for machining according to claim 4, characterized in that: The guiding mechanism includes a slider. A groove is provided on the chuck along the axial direction of the transmission screw. The groove matches the slider. The slider is slidably disposed in the groove. One end of the slider is threaded to the transmission screw. The second driving mechanism is disposed on the slider.

6. The mechanical gripper device for manufacturing a fixed mechanical jig for machining according to claim 1, characterized in that: It also includes a fixed base and a third drive mechanism disposed on the fixed base, the third drive mechanism being used to drive the chuck to rotate.

7. The mechanical gripper device for manufacturing a fixed mechanical jig for machining according to claim 6, characterized in that: The third drive mechanism includes a first motor, which is connected to the chuck via a first rotating shaft.

8. The mechanical gripper device for manufacturing a fixed mechanical jig for machining according to claim 1, characterized in that: The chuck is composed of several jaw mounting discs joined together at the ends, and the jaw mounting discs are set correspondingly to the jaw assemblies.

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