Adjustable mechanical arm

Abstract

The utility model is suitable for the technical field of mechanical equipment, and provides an adjustable mechanical arm which comprises a mechanical arm body. The mounting frame is arranged on the mechanical arm body; the two connecting clamping plates are assembled on the mounting frame; the two telescopic rods are fixedly mounted on the two connecting clamping plates respectively; the two adjusting clamping plates are slidably mounted on the two connecting clamping plates correspondingly, and the two adjusting clamping plates are fixedly connected with output shafts of the two telescopic rods correspondingly; and the clamping mechanism is assembled on the mounting frame and the two connecting clamping plates, and the clamping mechanism is used for driving the two adjusting clamping plates to move relatively to clamp a workpiece on the machine tool. According to the adjustable mechanical arm, a workpiece can be clamped and transferred, meanwhile, the using length of the clamp can be adjusted according to the size of the workpiece, and therefore the stability of the workpiece in the clamping process is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical equipment, and in particular relates to an adjustable mechanical arm. Background Art

[0002] A robotic arm is a complex system with high precision, multiple inputs and outputs, high nonlinearity, and strong coupling. Due to its unique operational flexibility, it has been widely used in many fields. For example, some machine tools are equipped with corresponding robotic arms to clamp some workpieces.

[0003] There are two clamps on the robotic arm. When clamping the workpiece, the robotic arm clamps the workpiece through the two clamps. However, the usable length of the clamps on some common robotic arms is often fixed, and the usable length of the clamps cannot be adjusted according to the size of the clamped workpiece. When clamping some relatively large workpieces, the clamps cannot apply force to the center position of the workpiece well, thereby reducing the stability of the workpiece clamping process. Utility Model Content

[0004] The utility model provides an adjustable mechanical arm, aiming to solve the problem in the background art that the length of a clamp on a currently used mechanical arm cannot be adjusted.

[0005] To solve the above problems, the present invention is implemented as follows: an adjustable robotic arm, comprising: a robotic arm body; a mounting frame arranged on the robotic arm body; two connecting clamps assembled on the mounting frame; two telescopic rods fixedly mounted on the two connecting clamps respectively; two adjustment clamps respectively slidably mounted on the two connecting clamps, and the two adjustment clamps are respectively fixedly connected to the output shafts of the two telescopic rods; a clamping mechanism assembled on the mounting frame and the two connecting clamps, the clamping mechanism being used to drive the two adjusting clamps to move relative to each other to clamp the workpiece on the machine tool; an adjustment mechanism arranged on the robotic arm body and the mounting frame, the adjustment mechanism being used to adjust the use position of the adjustment clamp.

[0006] Preferably, the clamping mechanism includes: a dual-axis motor fixedly mounted on the mounting frame; two screw rods rotatably mounted on the mounting frame, and the two screw rods are respectively fixedly connected to the two output shafts of the dual-axis motor; two connecting blocks respectively threadedly mounted on the two screw rods, and the two connecting blocks are connected to the two connecting splints.

[0007] Preferably, a guide mechanism is provided on the connecting splint and the adjusting splint, and the guide mechanism is used to guide the movement of the adjusting splint. The guide mechanism includes: a guide groove opened on the inner wall of the connecting splint; a guide block fixedly installed on the outer wall of the adjusting splint, and the guide block and the guide groove are slidably connected.

[0008] Preferably, a fixing mechanism is provided on the connecting splint and the connecting block, and the fixing mechanism is used to connect and fix the connecting splint and the connecting block. The fixing mechanism includes: a positioning frame fixedly mounted on the connecting splint; a positioning block fixedly mounted on the connecting block, the positioning block and the positioning frame are adaptively connected, and a fixing bolt is provided on the positioning frame, and the positioning frame is connected to the positioning block via the fixing bolt.

[0009] Preferably, an adjustment mechanism is provided on the robotic arm body and the mounting bracket, and the adjustment mechanism is used to adjust the use position of the adjustment splint, and the adjustment mechanism includes: a mounting shell fixedly mounted on the robotic arm body; a driving motor fixedly mounted in the mounting shell; and a mounting shaft rotatably mounted on the mounting shell, one end of the mounting shaft is fixedly connected to the output shaft of the driving motor, and the other end of the mounting shaft is fixedly connected to the mounting bracket.

[0010] Preferably, a connecting mechanism is provided on the mounting shell and the mounting frame, and the connecting mechanism is used to connect the mounting shell and the mounting frame. The connecting mechanism includes: a slider fixedly mounted on the mounting frame; a slide groove opened on the mounting shell, the slide groove is circular, and the plurality of sliders are slidably connected to the slide groove.

[0011] Preferably, friction pads are provided on both of the adjusting splints, a guide rod is fixedly mounted on the mounting frame, and the guide rod is slidably connected to the connecting block.

[0012] Compared with related technologies, the adjustable robotic arm provided by the present invention has the following beneficial effects:

[0013] Compared with the existing technology, the adjustable robotic arm provided by this solution:

[0014] The adjusting clamp is driven to move to the corresponding position by the robot arm body. When the workpiece needs to be clamped, first, according to the size of the workpiece, the telescopic rod is started by the controller to drive the adjusting clamp to move, so that the relative position of the adjusting clamp and the connecting clamp can be adjusted, thereby adjusting the overall clamping length. In this way, the adjusting clamp can apply force to the center position of the workpiece well, thereby improving the stability of the workpiece clamping. The clamping mechanism is started by the controller to drive the two adjusting clamps to move relative to each other, thereby clamping the workpiece. After completion, the clamped workpiece can be moved to the corresponding workstation through the robot arm body. During the entire operation, the workpiece can be clamped and transferred. At the same time, the use length of the clamp can be adjusted according to the size of the workpiece, thereby improving the stability of the workpiece clamping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of an adjustable mechanical arm provided by the utility model;

[0016] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0017] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of part A shown in FIG;

[0018] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of part B shown in FIG;

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the connecting splint and the adjusting splint in the present utility model.

[0020] Figure numerals: 1. Robot arm body; 2. Mounting frame; 3. Connecting splint; 4. Telescopic rod; 5. Adjusting splint; 6. Clamping mechanism; 601. Dual-axis motor; 602. Screw rod; 603. Connecting block; 7. Guide groove; 8. Guide block; 9. Positioning frame; 10. Positioning block; 11. Fixing bolt; 12. Mounting shell; 13. Driving motor; 14. Mounting shaft; 15. Slider; 16. Slide groove. DETAILED DESCRIPTION

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein in the specification of the application are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the description of the above-mentioned drawings, as well as any variations thereof, are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order; the terms "inside", "outside", "left", and "right" indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention.

[0022] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0023] The present invention provides an adjustable mechanical arm. Figure 1-5 As shown, the adjustable robotic arm includes: a robotic arm body 1; a mounting frame 2 arranged on the robotic arm body 1; two connecting splints 3 assembled on the mounting frame 2; two telescopic rods 4 respectively fixedly mounted on the two connecting splints 3; two adjusting splints 5 respectively slidably mounted on the two connecting splints 3, and the two adjusting splints 5 are respectively fixedly connected to the output shafts of the two telescopic rods 4; a clamping mechanism 6 assembled on the mounting frame 2 and the two connecting splints 3, the clamping mechanism 6 is used to drive the two adjusting splints 5 to move relative to each other to clamp the workpiece on the machine tool; an adjusting mechanism arranged on the robotic arm body 1 and the mounting frame 2, the adjusting mechanism is used to adjust the use position of the adjusting splint 5.

[0024] In this embodiment, the robot arm body 1 is set at the corresponding position of the machine tool, and the adjusting clamp 5 is driven to move to the corresponding position by the robot arm body 1. When the workpiece needs to be clamped, first, according to the size of the workpiece, the telescopic rod 4 is started by the controller to drive the adjusting clamp 5 to move, so that the relative position of the adjusting clamp 5 and the connecting clamp 3 can be adjusted, thereby adjusting the overall clamping length. In this way, the adjusting clamp 5 can apply force to the center position of the workpiece well, thereby improving the stability of the workpiece clamping. After the adjustment of the use position of the adjusting clamp 5 is completed, the clamping mechanism 6 is started by the controller to drive the two adjusting clamps 5 to move relative to each other, thereby clamping the workpiece. After that, the clamped workpiece can be moved to the corresponding workstation through the robot arm body 1. During the entire operation, the workpiece can be clamped and transferred, and the use length of the clamp can be adjusted according to the size of the workpiece, thereby improving the stability of the workpiece clamping process.

[0025] In a further preferred embodiment of the present invention, the clamping mechanism 6 includes: a dual-axis motor 601 fixedly mounted on the mounting frame 2; two screw rods 602 rotatably mounted on the mounting frame 2, and the two screw rods 602 are respectively fixedly connected to the two output shafts of the dual-axis motor 601; two connecting blocks 603 respectively threadedly mounted on the two screw rods 602, and the two connecting blocks 603 are connected to the two connecting splints 3.

[0026] In this embodiment, when the clamping mechanism 6 is used, the dual-axis motor 601 is started by the controller to drive the two screw rods 602 to rotate, and the guide rod limits the connecting block 603, so that the two screw rods 602 respectively drive the two connecting blocks 603 to move relative to each other, thereby driving the two adjusting clamps 5 to move relative to each other to clamp and fix the workpiece.

[0027] In a further preferred embodiment of the present invention, a guide mechanism is provided on the connecting splint 3 and the adjusting splint 5, and the guide mechanism is used to guide the movement of the adjusting splint 5, and the guide mechanism includes: a guide groove 7 opened on the inner wall of the connecting splint 3; a guide block 8 fixedly installed on the outer wall of the adjusting splint 5, and the guide block 8 is slidably connected to the guide groove 7.

[0028] In this embodiment, the cooperation between the guide groove 7 and the guide block 8 can improve the stability of the connection between the adjusting clamping plate 5 and the connecting clamping plate 3, and at the same time guide the adjusting clamping plate 5 when it moves.

[0029] In a further preferred embodiment of the present invention, a fixing mechanism is provided on the connecting splint 3 and the connecting block 603, and the fixing mechanism is used to connect and fix the connecting splint 3 and the connecting block 603, and the fixing mechanism includes: a positioning frame 9 fixedly mounted on the connecting splint 3; a positioning block 10 fixedly mounted on the connecting block 603, the positioning block 10 and the positioning frame 9 are adaptively connected, and a fixing bolt 11 is provided on the positioning frame 9, and the positioning frame 9 is connected to the positioning block 10 via the fixing bolt 11.

[0030] In this embodiment, the connection plate 3 and the connection block 603 can be connected and fixed by the cooperation of the positioning block 10, the positioning frame 9 and the fixing bolt 11, and at the same time, they are easy to disassemble and repair.

[0031] In a further preferred embodiment of the present invention, an adjustment mechanism is provided on the robotic arm body 1 and the mounting frame 2, and the adjustment mechanism is used to adjust the use position of the adjustment splint 5, and the adjustment mechanism includes: a mounting shell 12 fixedly mounted on the robotic arm body 1; a drive motor 13 fixedly mounted in the mounting shell 12; and a mounting shaft 14 rotatably mounted on the mounting shell 12, one end of the mounting shaft 14 is fixedly connected to the output shaft of the drive motor 13, and the other end of the mounting shaft 14 is fixedly connected to the mounting frame 2.

[0032] In this embodiment, when encountering some workpieces in special placement positions and the use position of the adjustment clamp 5 needs to be rotated and adjusted, the controller starts the drive motor 13 to drive the mounting shaft 14 to rotate, thereby driving the adjustment clamp 5 on the mounting frame 2 to adjust the use angle, which is more flexible to use and better meets the clamping operation of the workpiece.

[0033] In a further preferred embodiment of the present invention, a connecting mechanism is provided on the mounting shell 12 and the mounting frame 2, and the connecting mechanism is used to connect the mounting shell 12 and the mounting frame 2, and the connecting mechanism includes: a slider 15 fixedly mounted on the mounting frame 2; a slide groove 16 opened on the mounting shell 12, the slide groove 16 is circular, and multiple sliders 15 are slidably connected to the slide groove 16.

[0034] In this embodiment, the stability of the connection between the mounting bracket 2 and the mounting shell 12 can be improved by the cooperation between the sliding groove 16 and the sliding block 15 .

[0035] In a further preferred embodiment of the present invention, friction pads are provided on both of the adjusting splints 5 , a guide rod is fixedly mounted on the mounting frame 2 , and the guide rod is slidably connected to the connecting block 603 .

[0036] In this embodiment, the friction pad can increase the friction between the adjusting clamp 5 and the workpiece, thereby improving the stability of the workpiece clamping. The guide rod plays a limiting role on the connecting block 603, so that the screw rod 602 can stably drive the connecting block 603 to move.

[0037] To sum up, compared with the relevant technology, the adjusting clamp 5 is driven to move to the corresponding position by the robot arm body 1. When the workpiece needs to be clamped, first, according to the size of the workpiece, the telescopic rod 4 is started by the controller to drive the adjusting clamp 5 to move, so that the relative position of the adjusting clamp 5 and the connecting clamp 3 can be adjusted, thereby adjusting the overall clamping length. In this way, the adjusting clamp 5 can apply force to the center position of the workpiece well, thereby improving the stability of the workpiece clamping. The clamping mechanism 6 is started by the controller to drive the two adjusting clamps 5 to move relative to each other, thereby clamping the workpiece. After that, the clamped workpiece can be moved to the corresponding workstation through the robot arm body 1. During the entire operation, the workpiece can be clamped and transferred, and the use length of the clamp can be adjusted according to the size of the workpiece, thereby improving the stability of the workpiece clamping process.

[0038] In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope to be protected by the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making any creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope to be protected by the present invention.

Claims

1. An adjustable robotic arm, characterized in that: include: Robotic arm body; A mounting bracket provided on the robotic arm body; two connecting clamps mounted on the mounting frame; Two telescopic rods respectively fixedly mounted on the two connecting splints; Two adjustment splints are respectively slidably mounted on the two connecting splints, and the two adjustment splints are respectively fixedly connected to the output shafts of the two telescopic rods; A clamping mechanism assembled on the mounting frame and the two connecting clamping plates, the clamping mechanism being used to drive the two adjusting clamping plates to move relative to each other to clamp a workpiece on a machine tool; An adjustment mechanism is provided on the robot arm body and the mounting bracket, and the adjustment mechanism is used to adjust the use position of the adjustment splint.

2. The adjustable robotic arm according to claim 1, wherein: The clamping mechanism comprises: A dual-axis motor fixedly mounted on the mounting frame; Rotating two screw rods mounted on the mounting frame, wherein the two screw rods are respectively fixedly connected to the two output shafts of the dual-axis motor; Two connecting blocks are respectively threadedly sleeved on the two screw rods, and the two connecting blocks are connected to the two connecting clamping plates.

3. The adjustable robotic arm according to claim 1, wherein: The connecting splint and the adjusting splint are provided with a guide mechanism, and the guide mechanism is used to guide the movement of the adjusting splint, and the guide mechanism includes: A guide groove is provided on the inner wall of the connecting splint; A guide block is fixedly mounted on the outer wall of the adjusting splint, and the guide block is slidably connected to the guide groove.

4. The adjustable robotic arm according to claim 2, wherein: The connecting splint and the connecting block are provided with a fixing mechanism for connecting and fixing the connecting splint and the connecting block, and the fixing mechanism includes: A positioning frame fixedly mounted on the connecting splint; A positioning block is fixedly mounted on the connecting block, the positioning block and the positioning frame are adaptively connected, and the positioning frame is provided with fixing bolts, and the positioning frame is connected to the positioning block through the fixing bolts.

5. The adjustable robotic arm according to claim 1, wherein: The mechanical arm body and the mounting frame are provided with an adjustment mechanism, which is used to adjust the use position of the adjustment splint, and the adjustment mechanism includes: A mounting shell fixedly mounted on the robotic arm body; A drive motor fixedly mounted in the mounting shell; A mounting shaft is rotatably mounted on the mounting shell, one end of the mounting shaft is fixedly connected to the output shaft of the driving motor, and the other end of the mounting shaft is fixedly connected to the mounting bracket.

6. The adjustable robotic arm according to claim 5, wherein: The mounting shell and the mounting frame are provided with a connecting mechanism, which is used to connect the mounting shell and the mounting frame, and the connecting mechanism includes: A slider fixedly mounted on the mounting frame; A slide groove is provided on the mounting shell, the slide groove is circular, and a plurality of sliding blocks are all slidably connected to the slide groove.

7. The adjustable robotic arm according to claim 2, wherein: The two adjusting splints are both provided with friction pads, a guide rod is fixedly mounted on the mounting frame, and the guide rod is slidably connected to the connecting block.

Images