Positioning and clamping device for the forearm of a robotic arm

Abstract

The utility model proposes a positioning and clamping device for a robot arm, comprising a support, the surface of the support having a clamping chamber that passes through horizontally, the upper surface of the clamping chamber being provided with a plurality of pressure pins, the pressure pins being connected to a power unit to drive the pressure pins to move up and down, the lower surface of the clamping chamber being provided with a plurality of elastic pins corresponding to the pressure pins one by one, and the inner surface of the clamping chamber being provided with positioning pins, the positioning pins corresponding to the positioning pin holes on the surface of the robot arm, so that when the robot arm is accommodated in the clamping chamber, the positioning pins are inserted into the positioning pin holes to position the robot arm, at which time the elastic pins press the lower surface of the robot arm, and at the same time the power unit drives the pressure pins to move downward to press the upper surface of the robot arm, thereby completing the positioning and clamping of the robot arm. The positioning and clamping device for a robot arm proposed by the utility model can effectively improve the clamping efficiency and the clamping stability.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of mechanical arm processing, and in particular to a positioning and clamping device for a mechanical arm forearm. Background Art

[0002] When processing the HYP-6B-5001 small arm of the quasi-double arc welding robot arm part, the traditional device uses manual tightening screws for clamping, which has low clamping efficiency and unstable processing accuracy. Utility Model Content

[0003] In view of the defects and shortcomings of the existing technology, the embodiment of the utility model proposes a positioning clamping device for a robot arm forearm that improves clamping efficiency and clamping stability. The technical solution is as follows:

[0004] The utility model proposes a positioning and clamping device for a robot arm forearm, comprising a support, the surface of the support having a clamping chamber that passes through laterally, the upper surface of the clamping chamber being provided with a plurality of pressure ejector pins, the pressure ejector pins being connected to a power unit to drive the pressure ejector pins to move up and down, the lower surface of the clamping chamber being provided with a plurality of elastic pin shafts corresponding to the pressure ejector pins one by one, the inner surface of the clamping chamber being provided with positioning ejector pins, the positioning ejector pins corresponding to positioning pin holes on the surface of the robot arm forearm, so that when the robot arm forearm is accommodated in the clamping chamber, the positioning ejector pins are inserted into the positioning pin holes to position the robot arm forearm, at which time the elastic pin shaft presses the lower surface of the robot arm forearm, and at the same time the power unit drives the pressure ejector pins to move downward to press the upper surface of the robot arm forearm, thereby completing the positioning and clamping of the robot arm forearm.

[0005] As a preferred embodiment of the above technical solution, the power unit is a cylinder, and the cylinder is connected to an air source.

[0006] As a preferred embodiment of the above technical solution, each pressure pin is connected to a cylinder to provide power for it independently, and the cylinder diameters of the cylinders connected to the pressure pins on both sides are larger than the cylinder diameters of the cylinders connected to the pressure pin in the middle.

[0007] As a preferred embodiment of the above technical solution, a pneumatic switch and a pressure regulating valve are provided between the cylinder and the air source.

[0008] As a preferred embodiment of the above technical solution, a 360° rotatable joint is provided on the support, and the air source is connected to the cylinder via the 360° rotatable joint.

[0009] The utility model proposes a positioning and clamping device for a forearm of a robotic arm, which adopts a pneumatic design and controls the tightening and loosening of the cylinder through a pneumatic switch to ensure the clamping of the workpiece. A cylinder with a larger cylinder diameter is used in the solid area of ​​the workpiece, and a cylinder with a smaller cylinder diameter is used in the hollow area to prevent deformation of the workpiece due to stress. The air source pressure is adjusted by a pressure regulating valve, and the pressure can be adjusted according to the actual use scenario, thereby ensuring the stability of product processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of 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 creative work.

[0011] Figure 1 It is a schematic structural diagram of a positioning and clamping device for a mechanical arm forearm provided in an embodiment of the utility model;

[0012] Figure 2 yes Figure 1 Rear view of

[0013] Figure 3 yes Figure 1 Stereoscopic image of

[0014] Figure 4 This is a schematic diagram of the state of the positioning and clamping device provided in the embodiment of the utility model clamping the forearm of the mechanical arm;

[0015] Figure 5 A schematic diagram of the rear side mechanism of the forearm of a robotic arm provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0017] The utility model provides a positioning and clamping device for a mechanical arm forearm, comprising a support 1, the surface of the support having a clamping chamber 2 which is transversely connected thereto, the upper surface of the clamping chamber being provided with a plurality of pressure pins 3, the pressure pins being connected to a power unit 5 to drive the pressure pins to move up and down;

[0018] The lower surface of the clamping chamber is provided with multiple elastic pin shafts 4 corresponding to the pressure ejector pins one by one, and the inner surface of the clamping chamber is provided with a positioning ejector pin 6, which corresponds to the positioning pin hole 10 on the surface of the robot arm forearm, so that when the robot arm forearm is accommodated in the clamping chamber, the positioning ejector pin is inserted into the positioning pin hole to position the robot arm forearm. At this time, the elastic pin shaft presses the lower surface of the robot arm forearm, and at the same time, the power unit drives the pressure ejector pin to move downward to press the upper surface of the robot arm forearm, thereby completing the positioning and clamping of the robot arm forearm.

[0019] The power unit is a cylinder, which is connected to the gas source through a pneumatic switch 7, a pressure regulating valve 9 and a gas connection pipe. A 360° rotatable joint 8 is provided on the support, and the cylinder is connected to the gas source through the 360° rotatable joint 8.

[0020] Each pressure ejector pin is connected to a cylinder to provide power for it independently, and the cylinder diameters of the pressure ejector pins connected to the cylinders 5-1 on both sides are larger than the cylinder diameter of the pressure ejector pin connected to the cylinder 5-2 in the middle.

[0021] The specific usage is as follows:

[0022] 1. The 360° rotating joint is connected to the gas source through the air pipe, which facilitates the rotation of the support during processing and avoids the risk of air pipe entanglement and breakage;

[0023] 2. Position the positioning pin and the positioning pin hole of the forearm, and press the workpiece close to the tooling;

[0024] 3. After installation, use a wrench to tighten the screws and push the elastic pin against the workpiece;

[0025] 4. Turn on the pneumatic switch, the cylinder will hold the robot arm through the pressure pin, the pressure regulating valve can adjust the pressure, and adjust the pneumatic pressure according to the processing requirements;

[0026] 5. After pneumatic clamping, start processing. After processing is completed, turn the pneumatic switch to disassemble the workpiece.

[0027] The utility model proposes a positioning clamping device for the forearm of a mechanical arm, which adopts a pneumatic design and controls the tightening and loosening of the cylinder through a pneumatic switch to ensure the clamping of the workpiece. The solid area of ​​the workpiece uses a cylinder with a larger cylinder diameter, and the hollow area uses a cylinder with a smaller cylinder diameter to prevent the workpiece from being deformed due to stress. The pressure of the air source is adjusted by a pressure regulating valve, and the pressure can be adjusted according to the actual use scenario, thereby ensuring the stability of product processing. The clamping efficiency and stability have been greatly improved, which is much more convenient than the original manual tools and can be vigorously promoted in the future.

[0028] The technical solution of the utility model is described rather than limited thereto; although the utility model is described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features therein can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A positioning and clamping device for a robot arm, comprising a support, characterized in that: The support surface has a clamping chamber that passes through laterally, and the upper surface of the clamping chamber is provided with a plurality of pressure pins, and the pressure pins are connected to the power unit to drive the pressure pins to move up and down. The lower surface of the clamping chamber is provided with a plurality of elastic pin shafts corresponding to the pressure pins one by one, and the inner surface of the clamping chamber is provided with a positioning pin, and the positioning pin corresponds to the positioning pin hole on the surface of the robot arm forearm, so that when the robot arm forearm is accommodated in the clamping chamber, the positioning pin is inserted into the positioning pin hole to position the robot arm forearm, and at this time, the elastic pin shaft presses the lower surface of the robot arm forearm, and at the same time, the power unit drives the pressure pin to move downward to press the upper surface of the robot arm forearm, thereby completing the positioning and clamping of the robot arm forearm.

2. The positioning and clamping device for the robot arm according to claim 1, characterized in that: The power unit is a cylinder, and the cylinder is connected to an air source.

3. The positioning and clamping device for the robot arm according to claim 2, characterized in that: Each pressure ejector pin is connected to a cylinder to provide power for it independently, and the cylinder diameters of the cylinders connected to the pressure ejector pins at both sides are larger than the cylinder diameters of the cylinders connected to the pressure ejector pins at the middle.

4. The positioning and clamping device for the robot arm according to claim 2, characterized in that: A pneumatic switch and a pressure regulating valve are arranged between the cylinder and the air source.

5. The positioning and clamping device for the robot arm according to claim 2 or 4, characterized in that: The support is provided with a 360° rotatable joint, and the air source is connected to the cylinder via the 360° rotatable joint.

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