Supporting tool for manufacturing large arm of robot

Abstract

The utility model relates to a supporting tool for manufacturing a big arm of a robot, which comprises a bottom plate, two reference surface positioning mechanisms, a horizontal positioning mechanism and a bottom supporting mechanism, the two reference surface positioning mechanisms are symmetrically arranged on the two sides of the bottom plate, each reference surface positioning mechanism comprises a guide rail, a sliding block and a reference positioning plate, and the bottom supporting mechanism comprises a plurality of supporting assemblies. The multiple supporting assemblies are symmetrically arranged in two rows. Each supporting assembly comprises a guide block, a guide sleeve, a bolt, a nut, an extension rod and a supporting rod. According to the supporting tool, the reference positioning plate is used for positioning the top end face of the cylindrical part of the robot big arm, nuts of all the bottom supporting mechanisms are rotated, bolts are pushed to move upwards through threads, the bolts drive supporting rods at the bottom of the robot big arm to move upwards through guide blocks and extension rods, and the supporting rods are matched with the reference positioning plate; the large arm of the robot is clamped and fixed, operation is convenient, efficiency is high, and the positioning precision can be improved easily.

Description

TECHNICAL FIELD

[0001] The utility model relates to robot arm manufacturing technical field especially relates to a kind of supporting tool for robot large arm manufacturing. BACKGROUND

[0002] Industrial robot is the multi-joint manipulator or multi-degree-of-freedom robot for industrial field. Currently, industrial robot is developing towards large-scale and high-precision. The length of conventional industrial robot arm is mostly within 2 meters, and the processing technology is relatively simple.

[0003] The existing industrial robot large arm blank as shown in Figure 1 It includes the large arm body with internal hollow, and the large arm body includes integrally-formed upper wall plate and lower wall plate. The top surface of the upper wall plate and the bottom surface of the lower wall plate are both downwardly concave arc surfaces. The two ends of the upper wall plate are provided with first cylindrical part and second cylindrical part with parallel central axes, and the flange surface is formed by subsequent finish machining on the end faces of the two cylindrical parts.

[0004] The robot large arm has arc-shaped upper and lower wall plates, and the conventional supporting tool is used to form the support profile of the lower wall plate bottom surface by using multiple bolts at the bottom of the robot large arm during manufacturing and processing. This supporting method has the following disadvantages: on the one hand, the bolts are below the robot large arm, and the supporting height needs to be adjusted by turning the bolts under the robot large arm or by turning over the robot large arm and the tool for adjustment operation, which is complicated and low in efficiency. On the other hand, the support profile formed by the tool is based on the lower wall plate bottom surface, and the flange surface is usually machined based on the top end faces of the two cylindrical parts, which leads to poor positioning accuracy and affects the finish machining accuracy.

[0005] Therefore, the utility model provides a kind of supporting tool for robot large arm manufacturing to solve the above problems. UTILITY MODEL CONTENT

[0006] The utility model solves the technical problem to provide a kind of supporting tool for robot large arm manufacturing, and facilitates positioning, improves positioning accuracy and operation efficiency.

[0007] To solve the above technical problems, the technical scheme of the utility model is as follows: a kind of supporting tool for robot large arm manufacturing, the two sides of the length direction of the robot large arm are provided with first cylindrical part and second cylindrical part with parallel central axes, and the innovation point is as follows:

[0008] The bottom plate is horizontally arranged.

[0009] The reference surface positioning mechanism is provided with two reference surface positioning mechanisms symmetrically arranged on both sides of the bottom plate, and comprises a guide rail, a sliding block and a reference positioning plate.

[0010] The horizontal positioning mechanism is arranged between the two reference surface positioning mechanisms, and comprises a first positioning column for surrounding the first cylindrical part and a second positioning column for surrounding the second cylindrical part.

[0011] The bottom support mechanism is arranged between the two reference surface positioning mechanisms, and comprises a plurality of support assemblies arranged in two columns symmetrically.

[0012] Further, the first positioning column and the second positioning column are each provided with three positioning columns and are arranged in a triangular shape.

[0013] Further, the top of the guide sleeve is provided with a bearing, the outer ring of the bearing is fixedly connected with the guide sleeve, and the nut is arranged above the bearing and is fixedly connected with the inner ring of the bearing.

[0014] Further, the guide block and the extension rod are each in a cuboid structure.

[0015] Further, the support rod and the extension rod are provided with a first triangular plate, the two sides of the first triangular plate are respectively connected with the side walls of the support rod and the extension rod, and the extension rod and the guide block are provided with a second triangular plate, the two sides of the second triangular plate are respectively connected with the extension rod and the guide block.

[0016] Further, the top end surface of the support rod is a semispherical curved surface.

[0017] The utility model discloses the advantages are:

[0018] The utility model discloses a support frock utilizes the reference positioning plate of two reference surface positioning mechanism to the two cylinder department top end surface of robot big arm positioning, and with this as reference, rotates the nut of each bottom support mechanism, moves up through the thread of bolt, and the support rod of robot big arm bottom is driven to move up through the guide block, extension pole, and cooperates with the reference positioning plate, and the robot big arm is clamped and fixed, whole process does not need operating under the robot big arm or overturning the robot big arm and frock, convenient operation, high efficiency, and when the support rod of each bottom support mechanism is adjusted, the cylinder department end surface of robot big arm is pressed and set on the reference positioning plate, and this is favorable to improving the positioning accuracy.

[0019] The first positioning column and the second positioning column are both provided with three triangularly distributed positioning columns, which are favorable to horizontal positioning of the robot big arm and improve horizontal positioning accuracy.

[0020] The nut is rotatably installed above the guide sleeve through the bearing, and the structure is simple, the manufacturing cost is low, and the nut is not easy to be damaged.

[0021] The guide block and the extension pole are both cuboid structures, can realize horizontal limiting through structural characteristics, avoid shaking, and are favorable to improving guiding accuracy.

[0022] The first triangular plate and the second triangular plate are arranged, the connecting strength between the support rod, the extension pole and the guide block is improved, the deformation probability of the support rod and the extension pole is reduced, and positioning accuracy is improved.

[0023] The top end surface of the support rod is a semispherical curved surface, point contact is formed between the top end surface of the support rod and the bottom surface of the robot big arm when the support rod supports the robot big arm, the stability is high, and damage to the surface of the robot big arm can be effectively avoided. ACCURACY

[0024] The utility model will be further and specifically explained in connection with the drawings and the specific embodiment.

[0025] Figure 1 It is the structural schematic diagram of robot big arm blank.

[0026] Figure 2 It is the schematic view of robot big arm blank installation on the support frock.

[0027] Figure 3 It is the structural schematic diagram of bottom support mechanism.

[0028] Figure 4 It is the sectional view of bottom support mechanism in A-A direction. EMBODIMENT

[0029] In order to further illustrate the technical means and effects taken by the utility model to achieve the predetermined utility model purposes, the following will combine the drawings and the preferred embodiments to specifically describe the specific implementation manners, structures, features and effects of the utility model.

[0030] As shown in Figure 1 , the robot large arm blank includes an internally hollow large arm body, the large arm body includes integrally formed upper and lower wall plates, the top surface of the upper wall plate and the bottom surface of the lower wall plate are both downwardly concave arc-shaped curved surfaces, and the two ends of the upper wall plate are provided with first and second cylindrical portions a and b whose central axes are parallel to each other.

[0031] The embodiment provides a supporting tool for manufacturing a robot large arm, which comprises a bottom plate 1, a reference surface positioning mechanism 2, a horizontal positioning mechanism 3 and a bottom supporting mechanism 4, as shown in Figures 2-4 .

[0032] The bottom plate 1 is horizontally arranged.

[0033] The reference surface positioning mechanism 2 is arranged symmetrically on both sides of the bottom plate 1, and comprises a guide rail 21, a sliding block 22 and a reference positioning plate 23. The guide rail 21 is installed on the top surface of the bottom plate 1, the sliding block 22 is slidably installed on the guide rail 21 and is driven to move horizontally along the guide rail 21 by a screw rod 24, the sliding block 22 is provided with a threaded hole matched with the screw rod 24, the screw rod 24 is threadedly connected to the threaded hole in the middle, the screw rod 24 is rotatably installed on the top surface of the bottom plate 1 through a mounting seat 25 on both sides, and an operating handle is installed on the outer end of the screw rod 24. The reference positioning plate 23 is installed on the top of the sliding block 22, and one side of the reference positioning plate 23 extends out of the sliding block 22 and is used for positioning the top end surface of the cylindrical portion of the robot large arm.

[0034] The horizontal positioning mechanism 3 is arranged between the two reference surface positioning mechanisms 2, and comprises a first positioning column 31 for surrounding the first cylindrical portion a and a second positioning column 32 for surrounding the second cylindrical portion b. Both the first and second positioning columns 31 and 32 are vertically installed on the top surface of the bottom plate 1. In the embodiment, in order to improve the horizontal positioning precision, the first and second positioning columns 31 and 32 are all provided with three columns which are distributed in a triangular shape.

[0035] The bottom support mechanism 4 is arranged between the two reference surface positioning mechanisms 2, and the bottom support mechanism 4 comprises a plurality of support assemblies arranged symmetrically in two rows on both sides of the robot arm, and each support assembly comprises a guide block 41, a guide sleeve 42, a bolt 43, a nut 44, an extension rod 46 and a support rod 47. The guide sleeve 42 is vertically arranged on the top surface of the bottom plate 1, the guide block 42 is movably arranged in the guide sleeve 42, the central axis of the bolt 43 is vertically arranged above the guide sleeve 42, the bottom end of the bolt 43 is connected with the guide block 41, the nut 44 is rotatably arranged above the guide sleeve 42 through a bearing 45 and is threadedly connected with the outside of the bolt 43, the bearing 45 is arranged above the guide sleeve 42, the outer ring of the bearing 45 is fixedly connected with the guide sleeve 42, and the nut 44 is arranged above the bearing 45 and is fixedly connected with the inner ring of the bearing 45. The extension rod 46 is horizontally arranged, the guide sleeve 42 is provided with a through hole for the extension rod 46 to pass through and move with the guide block 41, one end of the extension rod 46 is connected with the guide block 41 through the through hole, and the other end of the extension rod 46 is connected with the support rod 47. The central axis of the support rod 47 is vertically arranged. In order to improve the connection strength between the support rod 47, the extension rod 46 and the guide block 41 and reduce the deformation probability of the support rod 47 and the extension rod 46, a first triangular plate 48 is arranged between the support rod 47 and the extension rod 46, the two sides of the first triangular plate 48 are respectively connected with the side walls of the support rod 47 and the extension rod 46, a second triangular plate 46 is arranged between the extension rod 46 and the guide block 41, and the two sides of the second triangular plate 46 are respectively connected with the extension rod 46 and the guide block 41. In the embodiment, in order to improve the guiding precision, the guide block 41 and the extension rod 46 are both cuboid structures, can be horizontally limited by means of the structural characteristics, can avoid shaking and can improve the positioning precision. In addition, the top end surface of the support rod 47 is a semispherical curved surface, when the support rod supports the robot arm, the support rod is in point contact with the bottom surface of the robot arm, the stability is high, and the surface of the robot arm can be effectively prevented from being damaged.

[0036] Working principle: the robot arm is placed above the bottom plate 1, the bottom of the robot arm is supported by the support rods 47 which are lowered in advance by the support assemblies, the bolts 43 and the nuts 44 of the two rows of support assemblies are located on both sides of the robot arm, the two cylindrical parts of the robot arm are positioned by the first positioning column and the second positioning column respectively, the screw rod 24 of each reference surface positioning mechanism 2 is rotated, the reference positioning plate 23 is driven by the sliding block 22 to move towards the robot arm, the reference positioning plate 23 is moved above the corresponding cylindrical part, the nut 44 of each support assembly is rotated, the bolt 43 is pushed upwards through the thread, the bolt 43 drives the support rod 47 at the bottom of the robot arm to move upwards through the guide block 41 and the extension rod 46, so that the robot arm is moved upwards, and finally the top end surface of the cylindrical part of the robot arm is tightly attached to the bottom surface of the reference positioning plate 23, and the clamping and fixing of the robot arm are completed.

[0037] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with preferred embodiments, it is not intended to limit the present application. Any person skilled in the art can make minor changes or modifications to the disclosed technical content, or make equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any modification, equivalent change or modification of the above embodiments, which does not depart from the technical solution of the present application, is still within the scope of the technical solution of the present application.

Claims

1. A support tool for manufacturing a robot arm, the robot arm having a first cylindrical portion and a second cylindrical portion provided on both sides in the length direction of the robot arm, the first cylindrical portion and the second cylindrical portion having mutually parallel central axes, characterized in that: Comprising a bottom plate, the bottom plate is horizontally arranged; a reference surface positioning mechanism, the reference surface positioning mechanism is symmetrically arranged on both sides of the bottom plate, the reference surface positioning mechanism comprises a guide rail, a sliding block and a reference positioning plate, the guide rail is installed on the top surface of the bottom plate, the sliding block is slidably installed on the guide rail and is driven by a screw rod to move horizontally along the guide rail, and the reference positioning plate is installed on the top of the sliding block and extends out of the sliding block on one side; a horizontal positioning mechanism, the horizontal positioning mechanism is arranged between the two reference surface positioning mechanisms, the horizontal positioning mechanism comprises a first positioning column for surrounding the first cylindrical part and a second positioning column for surrounding the second cylindrical part, and the first positioning column and the second positioning column are both vertically installed on the top surface of the bottom plate; a bottom support mechanism, the bottom support mechanism is arranged between the two reference surface positioning mechanisms, the bottom support mechanism comprises a plurality of support assemblies, the plurality of support assemblies are symmetrically arranged in two rows, the support assembly comprises a guide block, a guide sleeve, a bolt, a nut, an extension rod and a support rod, the guide sleeve is vertically installed on the top surface of the bottom plate, the guide block is movably arranged in the guide sleeve, the central axis of the bolt is vertically arranged above the guide sleeve, the bottom end of the bolt extends into the guide sleeve and is connected with the guide block, the nut is rotatably installed above the guide sleeve and is threadedly connected outside the bolt, the extension rod is horizontally arranged, the guide sleeve is provided with a through hole for the extension rod to pass through and move with the guide block, one end of the extension rod passes through the through hole and is connected with the guide block, and the other end is connected with the support rod, and the central axis of the support rod is vertically arranged.

2. The robot arm manufacturing support tooling of claim 1, wherein: The first positioning column and the second positioning column both have three and are triangularly distributed.

3. The robot arm manufacturing support tooling of claim 1, wherein: A bearing is arranged above the guide sleeve, the outer ring of the bearing is fixedly connected with the guide sleeve, and the nut is arranged above the bearing and is fixedly connected with the inner ring of the bearing.

4. The robot arm manufacturing support tooling of claim 1, wherein: The guide block and the extension rod are both cuboid structures.

5. The robot arm manufacturing support tooling of claim 1, wherein: A first triangular plate is arranged between the support rod and the extension rod, two sides of the first triangular plate are respectively connected with the side walls of the support rod and the extension rod, a second triangular plate is arranged between the extension rod and the guide block, and two sides of the second triangular plate are respectively connected with the extension rod and the guide block.

6. The robot arm manufacturing support tooling of claim 1, wherein: The top end surface of the support rod is a semispherical curved surface.

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