Mechanical arm for rotor shaft machining

Abstract

The mechanical arm comprises a base, a rotating seat, a large arm part and a small arm part, grooves are formed in the top end and the bottom end of the large arm part, a fixing cylinder is fixedly arranged between the two sides of the inner wall of each groove, and a lubricating mechanism is arranged in each fixing cylinder; the lubricating mechanism comprises an oil absorption sponge arranged in the fixing cylinder, a piston plate is movably arranged on one side in the fixing cylinder, a driving part used for driving the piston plate to move left and right is arranged in the fixing cylinder, and buffer springs are fixedly arranged at the top and the bottom of one side of the piston plate correspondingly. And one end of the buffer spring is fixedly connected with one side of the inner wall of the fixed cylinder. According to the mechanical arm for rotor shaft machining, through the arrangement of the lubricating mechanism, lubricating oil can be extruded to the surface of the fixing barrel to lubricate the connecting position, the clamping phenomenon caused by friction in the rotating process is avoided, and the service life of the mechanical arm is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical arms, in particular to a mechanical arm for machining a rotor shaft. Background Art

[0002] The rotor shaft has sufficient mechanical strength to withstand the torque from the prime mover and the huge electromagnetic torque caused by a sudden short circuit at the generator outlet. It is also a forging with good magnetic conductivity and serves as the carrier of the main magnetic poles of the generator.

[0003] 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 industrial assembly, safety and explosion protection, and other fields.

[0004] According to the patent application number CN202321970033.X, this robot arm realizes the one-time pick-up and placement of the drive shaft head on the workbench by setting two grippers. Compared with the traditional bionic robot arm with only one gripper, it is necessary to take out the drive shaft head first, and then put the drive shaft head to be processed into the workbench, which greatly reduces the waiting time of the workbench and greatly improves the processing efficiency. The gripper of this robot arm fixes the motion trajectory of the clamping arm by setting a sliding rod to ensure that the grasping center is fixed, which greatly improves the stability of grasping;

[0005] In the above patent, the joints on the small arm and the large arm are arranged to rotate through a rotating shaft. However, since the joints of the robotic arm will generate greater friction during use, it is easy to cause operation jams after long-term work, and it is difficult to achieve lubrication of the joints. In addition, the base of the robotic arm is mostly fixed with bolts, which are easy to loosen due to vibration, affecting the stability of the robotic arm during use. Therefore, in view of the above shortcomings, the utility model makes the following improvements. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the utility model provides a mechanical arm for machining a rotor shaft, which solves the problems mentioned in the background technology.

[0008] (II) Technical solution

[0009] To achieve the above objectives, the utility model is implemented through the following technical solutions: a mechanical arm for rotor shaft processing, comprising a base, a rotating seat, a large arm member and a small arm member, the top and bottom ends of the large arm member are both provided with grooves, and a fixed cylinder is fixedly arranged between the two sides of the inner wall of the groove, and a lubrication mechanism is arranged inside the fixed cylinder;

[0010] The lubrication mechanism includes an oil-absorbing sponge arranged inside the fixed cylinder, a piston plate is movably arranged on one side inside the fixed cylinder, a driving part for driving the piston plate to move left and right is arranged inside the fixed cylinder, a buffer spring is fixedly arranged on the top and bottom of one side of the piston plate, and one end of the buffer spring is fixedly connected to one side of the inner wall of the fixed cylinder, and an oil outlet hole is opened on the surface of the fixed cylinder.

[0011] Preferably, the driving part includes a movable rod slidably arranged inside the fixed cylinder, and one end of the movable rod is fixedly connected to one side of the piston plate, and an oil inlet pipe passes through the inside of the movable rod and the piston plate, and one end of the oil inlet pipe is threadedly connected to a sealing cover.

[0012] Preferably, one end of the small arm is rotatably connected to the surface of the upper fixed cylinder, and the top of the rotating seat is rotatably connected to the surface of the lower fixed cylinder via a connecting shaft.

[0013] Preferably, a clamping mechanism is provided at the other end of the small arm member.

[0014] Preferably, a threaded hole is provided on the top surface of the base, and a fastening bolt is provided on the internal thread of the threaded hole.

[0015] Preferably, a limiting mechanism is provided on the top surface of the base, and the limiting mechanism comprises a slide groove opened on the top surface of the base, and an L-shaped limiting plate is slidably provided on one side of the inner wall of the slide groove through a clamping spring.

[0016] (III) Beneficial effects

[0017] The utility model provides a mechanical arm for machining a rotor shaft, which has the following beneficial effects:

[0018] (1) The rotor shaft processing robot arm can squeeze lubricating oil onto the surface of the fixed cylinder to lubricate the connection through the setting of the lubrication mechanism, thereby avoiding the jamming phenomenon caused by friction during the rotation process and extending the service life of the robot arm.

[0019] (2) The rotor shaft processing robot arm can limit and tighten the top end of the fastening bolt after it is fixed by setting a limit mechanism, so as to prevent the fastening bolt from loosening due to vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the fixed cylinder structure of the utility model;

[0022] Figure 3 It is a cross-sectional view of the fixed cylinder structure of the utility model;

[0023] Figure 4 For this utility model Figure 1 A partial enlarged view of point A in the middle.

[0024] In the figure: 1. base; 2. rotating seat; 3. large arm member; 4. small arm member; 5. fixed cylinder; 6. lubrication mechanism; 61. oil absorption sponge; 62. piston plate; 63. buffer spring; 64. oil outlet hole; 65. movable rod; 66. oil inlet pipe; 67. sealing cover; 7. clamping mechanism; 8. threaded hole; 9. fastening bolt; 10. limiting mechanism; 101. slide groove; 102. clamping spring; 103. L-shaped limiting plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1

[0027] See also Figures 1 to 3 As shown, the utility model provides a technical solution, and the specific improvements are as follows:

[0028] A mechanical arm for machining a rotor shaft comprises a base 1, a rotating seat 2, a large arm member 3 and a small arm member 4, wherein the top and bottom ends of the large arm member 3 are provided with grooves, and a fixed cylinder 5 is fixedly arranged between the two sides of the inner wall of the groove, one end of the small arm member 4 is rotatably connected to the surface of the upper fixed cylinder 5, and the other end of the small arm member 4 is provided with a clamping mechanism 7, which is a prior art and is not described in detail in this application document, the top of the rotating seat 2 is rotatably connected to the surface of the lower fixed cylinder 5 through a connecting shaft, and a lubricating mechanism 6 is arranged inside the fixed cylinder 5; the lubricating mechanism 6 comprises an oil-absorbing sponge 61 arranged inside the fixed cylinder 5, and a piston plate 62 is movably arranged on one side inside the fixed cylinder 5, and the fixed cylinder 5 A baffle is fixedly arranged on the other side of the interior to block the lubricating oil when the oil-absorbing sponge 61 is squeezed out. A driving part for driving the piston plate 62 to move left and right is arranged inside the fixed cylinder 5. The driving part includes a movable rod 65 slidably arranged inside the fixed cylinder 5, and one end of the movable rod 65 is fixedly connected to one side of the piston plate 62. An oil inlet pipe 66 is passed through the interior of the movable rod 65 and the piston plate 62. A sealing cover 67 is threadedly connected to one end of the oil inlet pipe 66. The sealing cover 67 can prevent the lubricating oil from overflowing. A buffer spring 63 is fixedly arranged on the top and bottom of one side of the piston plate 62, and one end of the buffer spring 63 is fixedly connected to one side of the inner wall of the fixed cylinder 5. An oil outlet hole 64 is opened on the surface of the fixed cylinder 5.

[0029] The sealing cover 67 is rotated and removed, and the personnel transports the lubricating oil to the inside of the fixed cylinder 5 and between the baffle and the piston plate 62 through the oil inlet pipe 66. At this time, the oil-absorbing sponge 61 absorbs the lubricating oil and stores it. When it is necessary to lubricate one end of the small arm part 4 and the connecting shaft, the personnel only needs to drive the movable rod 65 to move in the direction of the fixed cylinder 5, and the piston plate 62 moves synchronously to squeeze the oil-absorbing sponge 61, so that the lubricating oil absorbed in the oil-absorbing sponge 61 can be squeezed out through the oil outlet hole 64. At this time, the lubricating oil can overflow to the surface of the fixed cylinder 5, thereby playing a lubricating role and avoiding jamming caused by friction.

[0030] Embodiment 2

[0031] Based on Example 1, please refer to Figure 1 and Figure 4 The specific improvements are as follows:

[0032] A threaded hole 8 is provided on the top surface of the base 1, and a fastening bolt 9 is provided on the internal thread of the threaded hole 8. A limiting mechanism 10 is provided on the top surface of the base 1, and the limiting mechanism 10 includes a slide groove 101 provided on the top surface of the base 1, and an L-shaped limiting plate 103 is slidably provided on one side of the inner wall of the slide groove 101 through a clamping spring 102;

[0033] The base 1 can be fixed by inserting the fastening bolt 9 into the threaded hole 8 and connecting it with the contact surface. The L-shaped limiting plate 103 is limited at the top of the fastening bolt 9 under the force of the clamping spring 102 to prevent the fastening bolt 9 from loosening due to vibration.

[0034] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mechanical arm for machining a rotor shaft, comprising a base (1), a rotating base (2), a large arm member (3) and a small arm member (4), characterized in that: The top and bottom ends of the large arm member (3) are both provided with grooves, and a fixing cylinder (5) is fixedly arranged between the two sides of the inner wall of the groove, and a lubrication mechanism (6) is arranged inside the fixing cylinder (5); The lubricating mechanism (6) comprises an oil-absorbing sponge (61) arranged inside the fixed cylinder (5); a piston plate (62) is movably arranged on one side inside the fixed cylinder (5); a driving part for driving the piston plate (62) to move left and right is arranged inside the fixed cylinder (5); a buffer spring (63) is fixedly arranged on the top and bottom of one side of the piston plate (62), and one end of the buffer spring (63) is fixedly connected to one side of the inner wall of the fixed cylinder (5); and an oil outlet hole (64) is opened on the surface of the fixed cylinder (5).

2. A rotor shaft processing robot according to claim 1, characterized in that: The driving part comprises a movable rod (65) slidably arranged inside the fixed cylinder (5), and one end of the movable rod (65) is fixedly connected to one side of the piston plate (62), and an oil inlet pipe (66) penetrates the inside of the movable rod (65) and the piston plate (62), and one end of the oil inlet pipe (66) is threadedly connected to a sealing cover (67).

3. The rotor shaft processing robot arm according to claim 1, characterized in that: One end of the small arm member (4) is rotatably connected to the surface of the upper fixed cylinder (5), and the top of the rotating seat (2) is rotatably connected to the surface of the lower fixed cylinder (5) via a connecting shaft.

4. The rotor shaft processing robot according to claim 1, characterized in that: The other end of the small arm member (4) is provided with a clamping mechanism (7).

5. The rotor shaft processing robot arm according to claim 1, characterized in that: A threaded hole (8) is provided on the top surface of the base (1), and a fastening bolt (9) is provided on the internal thread of the threaded hole (8).

6. The rotor shaft processing robot arm according to claim 1, characterized in that: A limiting mechanism (10) is provided on the top surface of the base (1), and the limiting mechanism (10) comprises a slide groove (101) opened on the top surface of the base (1), and an L-shaped limiting plate (103) is slidably provided on one side of the inner wall of the slide groove (101) via a clamping spring (102).

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