Multifunctional positioning tool table for robot welding

Abstract

The utility model relates to the technical field of robot welding multifunctional positioning tool tables, and discloses a robot welding multifunctional positioning tool table which comprises a main body mechanism and a positioning mechanism, the positioning mechanism is fixedly installed in the main body mechanism, and the main body mechanism comprises a tool table, a table top and a table frame. A table top is fixedly installed at the top end of the tool table, and a rack is fixedly installed on one side of the table top. The welding device has the functions of improving the welding precision and accurately positioning, and workpieces can be accurately positioned through positioning pins and positioning holes in the positioning mechanism and various clamps. The high-precision matching of the positioning pin and the positioning hole can ensure that the position of the workpiece on the tool is accurate. For example, when a precise mechanical part is welded, the precise positioning can ensure the position precision of a welding joint, so that the size and the shape of the welded part meet strict design requirements, the welding deviation is effectively reduced, and the product quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to robot welding multifunctional positioning frock table technical field, concretely is a kind of robot welding multifunctional positioning frock table. BACKGROUND

[0002] With the development of science and technology, more and more industries begin to use robots to replace human work, and in this process, many related automation equipment are needed to assist robots to complete related automation functions. The positioning table, as an essential device in the robot automation system, has a complex structure, is difficult to maintain, and has a small range of workpiece size and high production cost.

[0003] The existing technology disclosure number CN 111153197 A patent document provides a kind of for robot industry disc parts multifunctional positioning table, positioning precision is high;By adjusting screw rod adjusting positioning taper block height, positioning taper block can adapt to different kinds and sizes of workpiece, solve the problem of multi-product mixed production, realize flexible automation production, improve production line beat, small footprint, low cost, and can quickly and conveniently robot grab workpiece and turn over, realize multifunction in one.

[0004] However, the existing device cannot accurately complete positioning welding when in use. UTILITY MODEL CONTENT

[0005] (I) technical problem solved

[0006] The utility model aims at providing a kind of robot welding multifunctional positioning frock table to solve the problem that the existing cannot accurately complete positioning welding in the above background technology.

[0007] (II) technical scheme

[0008] To achieve the above purpose, the utility model provides the following technical scheme: a kind of robot welding multifunctional positioning frock table, including main body mechanism and positioning mechanism, the positioning mechanism is fixedly installed in the main body mechanism interior, the main body mechanism includes frock table, table top, rack, the frock table top is fixedly installed with table top, the table top one side is fixedly installed with rack;

[0009] The positioning mechanism includes positioning pin, clamp, positioning hole, the table top surface is fixedly installed with positioning pin, the table top is fixedly installed with clamp, and the clamp surface is fixedly installed with positioning hole.

[0010] Preferably, the main body mechanism further includes frame and anchor bolt, the rack surface is fixedly installed with frame, and the frame bottom end is fixedly installed with a plurality of anchor bolts.

[0011] Preferably, the main body mechanism further comprises a robot and a motor, the robot is fixedly installed on the surface of the tooling table, the robot is fixedly installed with a clamp, and the motor is fixedly installed inside the tooling table.

[0012] Preferably, the main body mechanism further comprises a workpiece and a tooling, the workpiece is fixedly installed on the surface of the table, and the tooling is fixedly installed on the surface of the table.

[0013] Preferably, the positioning mechanism further comprises a turntable and a bearing, the turntable is fixedly installed at the bottom end of the tooling table, and the bearing is fixedly installed at the bottom end of the turntable.

[0014] Preferably, the positioning mechanism further comprises a turnover frame and a rotating shaft, the turnover frame is fixedly installed at both ends of the tooling table, and the rotating shaft is fixedly connected to the turnover frame.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. Improved Welding Accuracy: Precise positioning, utilizing locating pins and holes in the positioning mechanism, along with various fixtures, enables accurate workpiece positioning. The high-precision fit between the locating pins and holes ensures the workpiece's accurate position on the tooling. For example, in welding precision mechanical parts, this precise positioning guarantees the positional accuracy of the weld joint, ensuring the welded part's dimensions and shape meet stringent design requirements, effectively reducing welding deviations and improving product quality. Stable Workpiece Fixing: Clamping devices firmly secure the workpiece. For large or complex-shaped workpieces, stable fixing is crucial for ensuring welding accuracy, preventing welding defects caused by workpiece movement, such as discontinuous welds and weld deformation. Auxiliary Positioning Function: Rotation and flipping mechanisms can precisely rotate or flip the workpiece to the required angle. The motor-driven rotary platform allows for precise angle control, facilitating circumferential or multi-angle welding of workpieces by the robot. For workpieces with complex geometries, such as pipes and cylinders, this ensures precise control of the weld position and quality when the robot welds at different positions and angles, improving overall welding accuracy. Improving work efficiency and enabling rapid workpiece clamping, the multi-functional positioning fixture features various positioning and clamping devices, making the workpiece clamping process faster and more convenient. For example, the rational layout and operation of the fixtures and clamping devices allow operators or robots to place and fix the workpiece in a short time. Compared with traditional manual positioning and fixing methods, clamping time is significantly shortened, especially in mass production, where this reduction in clamping time can significantly improve production efficiency. Adaptable to various welding tasks, the fixture, with its multiple positioning and auxiliary functions, can accommodate welding workpieces of different shapes, sizes, and types. Whether the workpiece is square, round, or has a complex shape, a suitable positioning and fixing method can be found on the fixture. This versatility reduces the time spent changing fixtures, allowing the robotic welding system to quickly switch between different welding tasks, improving equipment utilization and overall work efficiency. Enhancing robot efficiency, the stable fixture provides excellent working conditions for robotic welding. The robot can weld according to preset programs and paths without frequent adjustments to welding parameters or concerns about workpiece position changes. For example, in the welding process, the robot can weld at a faster speed and with a more stable posture, reducing the pauses and adjustment time during the welding process, thereby improving the robot's work efficiency;

[0017] 2、Enhancing the versatility and flexibility of the equipment, compatible with multiple robot systems, the design structure and interface of this multifunctional positioning tooling table can be compatible with different brands and models of robot welding systems. Whether it is an industrial robot or a collaborative robot, it can be used with the tooling table. For example, the height, rotation and overturning mechanism of the tooling table can be adjusted according to the working range and kinematics requirements of the robot, so that the robot can smoothly weld the workpiece, improving the versatility of the equipment. Expandability and functional adjustment, the mechanical structure of the tooling table has certain expandability, which can add or modify functions according to actual welding requirements. For example, new positioning devices, cooling systems or protective devices can be added to the tooling. At the same time, the angle range of the rotation and overturning mechanism, the clamping force of the clamping device and other parameters can also be flexibly adjusted according to different welding tasks to meet the diversified production requirements and enhance the flexibility of the equipment. Ensure work safety and quality, quality control and stability, through accurate positioning, stable fixation and appropriate auxiliary functions, the tooling table can ensure the stability and quality consistency of the welding process. Stable tooling table can reduce vibration and deformation during welding, making the quality of the weld more uniform and reliable. For example, when welding aerospace or automotive parts with extremely high quality requirements, this tooling table can ensure that each welded product meets high quality standards, reduces the rate of defective products, and improves the overall quality of products. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Figure 1 is a schematic diagram of the overall three-dimensional structure of the tooling table of the present utility model;

[0019] Figure 2 Figure 2 is a schematic diagram of the tooling table structure of the present utility model;

[0020] Figure 3 Figure 3 is a schematic diagram of the overall front structure of the present utility model;

[0021] Figure 4 Figure 4 is a schematic diagram of the overall side structure of the present utility model.

[0022] In the figure: 1, main mechanism; 101, tooling table; 102, table top; 103, table frame; 104, frame; 105, anchor bolt; 106, robot; 107, motor; 108, workpiece; 109, tooling; 2, positioning mechanism; 201, positioning pin; 202, clamp; 203, positioning hole; 204, turntable; 205, bearing; 206, overturning frame; 207, shaft. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0024] Please refer to Figure 1 Figure 4 The utility model provides a technical scheme: a kind of robot welding multifunctional positioning tool table, including main body mechanism 1 and positioning mechanism 2, the positioning mechanism 2 is fixedly installed in the inside of main body mechanism 1, the main body mechanism 1 includes tool table 101, table top 102, rack 103, the tool table 101 top end is fixedly installed with table top 102, one side of table top 102 is fixedly installed with rack 103;

[0025] The positioning mechanism 2 includes positioning pin 201, clamp 202, positioning hole 203, the positioning pin 201 is fixedly installed on the surface of table top 102, the clamp 202 is fixedly installed on table top 102, and the positioning hole 203 is fixedly installed on the surface of clamp 202.

[0026] Preferably, the main body mechanism 1 further includes a frame 104 and anchor bolts 105, the frame 104 is fixedly installed on the surface of the rack 103, and the anchor bolts 105 are fixedly installed at the bottom end of the frame 104.

[0027] Preferably, the main body mechanism 1 further includes a robot 106 and a motor 107, the robot 106 is fixedly installed on the surface of the tool table 101, the clamp 202 is fixedly installed on the robot 106, and the motor 107 is fixedly installed in the tool table 101.

[0028] Preferably, the main body mechanism 1 further includes a workpiece 108 and a tool 109, the workpiece 108 is fixedly installed on the surface of the table top 102, and the tool 109 is fixedly installed on the surface of the table top 102.

[0029] Preferably, the positioning mechanism 2 further includes a turntable 204 and a bearing 205, the turntable 204 is fixedly installed at the bottom end of the tool table 101, and the bearing 205 is fixedly installed at the bottom end of the turntable 204.

[0030] Preferably, the positioning mechanism 2 further includes a turnover frame 206 and a rotating shaft 207, the turnover frame 206 is fixedly installed at both ends of the tool table 101, and the rotating shaft 207 is fixedly connected to the turnover frame 206.

[0031] ​Working principle: the material and characteristics of the table 102, the table 102 of the tooling table 101 is usually made of metal material, such as steel plate or cast iron plate. The steel plate table 102 has high strength and toughness, and can withstand the impact force of heavy welding workpieces 108 and welding process. Its thickness is generally between 10-30mm, for example, for some small welding workpieces 108, 10-15mm thick steel plate table 102 can meet the requirements; while for large and heavy workpieces 108, 20-30mm thick steel plate may be needed to ensure the stability of the table 102. The cast iron plate table 102 has good shock absorption and wear resistance, and is suitable for welding work with high precision requirements, because the internal structure of cast iron helps to reduce vibration during welding, making welding more stable.

[0032] The surface of the table 102 will be processed, such as milling, grinding, etc., to ensure its flatness and roughness. The flatness requirement is high, and the flatness tolerance is usually controlled within ±0.1mm, which can ensure that the workpiece 108 placed on the table 102 can remain horizontal, which is beneficial to accurate welding. The roughness is generally between Ra3.2-Ra6.3, and appropriate roughness can increase the friction between the workpiece 108 and the table 102, preventing the workpiece 108 from sliding during welding.

[0033] The structure and support method of the rack 103, the rack 103 is the frame 104 structure supporting the table 102, which is usually made of section steel. Channel steel and angle steel are commonly used in small tooling tables 101, their shape is convenient for assembly and connection, and can provide stable support. I-beam is suitable for large and heavy tooling tables 101, and has stronger carrying capacity. The connection method of the rack 103 can be welding or bolt connection, the welding connection structure is firm, but once damaged, it is difficult to repair; the bolt connection is convenient for disassembly and maintenance, and has higher flexibility.

[0034] There are many support methods for the tooling table 101, the common ones are four-point support and multi-point support. Four-point support structure is simple, which fixes the tooling table 101 on the ground through four foundation bolts 105, and is suitable for lighter tooling tables 101 and occasions with not very high stability requirements. Multi-point support is to set multiple support points at the bottom of the rack 103, which can adjust the levelness of the tooling table 101 through adjusting bolts, and is suitable for high-precision welding and large tooling tables 101, which can better adapt to the uneven ground.

[0035] The positioning pin 201 and the positioning hole 203, the positioning pin 201 is a kind of accurate positioning element, generally made of hard alloy or quenched steel, high hardness, good wear resistance.The shape of positioning pin 201 has cylindrical pin and rhombus pin, cylindrical pin is mainly used to determine the center position of workpiece 108, and rhombus pin is used to prevent workpiece 108 from rotating in plane.The diameter of positioning pin 201 is determined according to the size of positioning hole 203 of workpiece 108, and the tolerance is generally controlled within ±0.05mm to ensure accurate fit with positioning hole 203.

[0036] The positioning hole 203 is opened in workpiece 108 or positioning clamp 202, and the size accuracy and position accuracy are very high.The position accuracy is generally within ±0.1mm to ensure that workpiece 108 can be accurately placed on tooling 109.In use, positioning pin 201 is inserted into positioning hole 203, and through the clearance fit or transition fit of positioning pin 201 and positioning hole 203, the rapid positioning of workpiece 108 is realized.

[0037] Clamp 202 and clamping device, clamp 202 is a device for fixing workpiece 108, and its types are various, and according to the shape of workpiece 108 and welding requirements, it can be flat tongs, V-shaped block, chuck and the like.Flat tongs are suitable for clamping square or rectangular workpiece 108, and the jaw is generally made of hard alloy or quenched steel, which has high hardness and wear resistance, and can firmly clamp workpiece 108.V-shaped block is mainly used for clamping circular workpiece 108, and the angle of V-shaped groove is generally 90° or 120°, so that circular workpiece 108 can be automatically centered.Chuck is mainly used for clamping workpiece 108, and through the contraction and expansion of clamping jaw, workpiece 108 can be clamped and released.

[0038] Rotary platform, rotary platform is mainly composed of turntable 204, bearing 205, driving device and the like.Turntable 204 is the part of bearing workpiece 108, and is generally made of cast steel or steel plate welding, and its surface will be processed to ensure good contact with workpiece 108 and rotation accuracy.Bearing 205 is the key component of rotary platform, and generally adopts high-precision ball bearing 205 or roller bearing 205, which can bear axial and radial load to ensure the stable rotation of turntable 204.

[0039] The drive device can be either motor 107 driven or manually driven. The motor-driven rotary platform enables precise angle control. Connected to the turntable 204 via a reducer, the rotational speed and angle of the turntable 204 can be precisely controlled based on the motor 107's speed and the reducer's transmission ratio. For example, for workpieces 108 requiring circumferential welding, the motor-driven rotary platform can rotate at set angular intervals such as 10° or 15°, facilitating welding by the robot 106. The manually driven rotary platform is operated via a handwheel or crank, suitable for applications where high rotational precision is not required.

[0040] The flipping mechanism is used to flip the workpiece 108 within a certain angle range. It typically consists of a flipping frame 206, a rotating shaft 207, and a drive system. The flipping frame 206 is the component that fixes the workpiece 108. Its shape and size are designed according to the shape and size of the workpiece 108 to ensure that the workpiece 108 will not fall off during the flipping process. The rotating shaft 207 is the core component of the flipping mechanism. Its position and strength are determined according to the center of gravity and weight of the workpiece 108. It is generally a solid or hollow shaft and is mounted on the tooling table 101 via bearings 205.

[0041] When the workpiece 108 is placed on the metal table 102, the strength and toughness of the table 102 come into play. For the steel plate table 102, its high strength allows it to withstand the weight of the workpiece 108 and the impact forces during welding. For example, when welding large structural components, the heavy workpiece 108 exerts pressure on the table 102, which resists deformation due to its own strength. The shock absorption advantage of the cast iron plate table 102 is that vibrations during welding are transmitted to the interior of the cast iron through the table 102. Due to the microstructure and material properties of the cast iron, the vibration energy is absorbed and dispersed, making the welding process more stable.

[0042] The flatness and roughness of the table surface 102 after milling, grinding, and other machining processes also play an important role. Flatness ensures that the workpiece 108 is placed horizontally. According to the principles of gravity and friction, the direction of gravity acting on the horizontally placed workpiece 108 during welding is perpendicular to the table surface 102, increasing the stability of the workpiece 108. Appropriate roughness generates sufficient friction between the workpiece 108 and the table surface 102. When the robot 106 applies external force to the workpiece 108 during welding, the friction prevents the workpiece 108 from sliding. For example, when welding small parts, this friction is sufficient to keep the part in its initial position.

[0043] The frame 103, constructed of steel profiles, is integrated into a single unit by welding or bolting. Welding ensures a strong connection between the steel profiles, creating a rigid structure that effectively transfers the weight of the platform 102 and the workpiece 108 to the support points. Bolted connections facilitate installation and disassembly while also ensuring structural stability through the preload generated by tightening the bolts.

[0044] The four-point support method uses four anchor bolts 105 to fix the fixture table 101 to the ground. This method's stability is based on an extension of the principle of triangle stability; the four support points form a stable plane, maintaining the balance of the fixture table 101 under light loads and minor external disturbances. Multi-point support, on the other hand, uses multiple adjustable support points to adapt to uneven ground conditions. When adjusting the height of each support point using the bolts, the geometric principle of three points determining a plane allows the fixture table 101 to reach an ideal level, ensuring that the workpiece 108 is in a horizontal position during high-precision welding, which is beneficial for controlling welding accuracy.

[0045] Positioning pin 201 is inserted into positioning hole 203 to achieve positioning. When the cylindrical pin is inserted into positioning hole 203, based on the geometric characteristics of the cylinder, its fit with positioning hole 203 restricts the two translational degrees of freedom of workpiece 108 in the plane, thereby determining the center position of workpiece 108. The rhomboid pin, through its special rhomboid shape, allows workpiece 108 to have a certain displacement in one direction when it fits with positioning hole 203, preventing workpiece 108 from rotating around the cylindrical pin. The tolerance fit between positioning pin 201 and positioning hole 203 is very critical. With clearance fit, positioning pin 201 can be inserted into positioning hole 203 more easily, but there is a certain gap to accommodate factors such as thermal expansion of workpiece 108; transition fit is more precise, ensuring positioning accuracy while also allowing positioning pin 201 to be smoothly inserted into positioning hole 203.

[0046] The clamping mechanism 202 operates on various principles. Different types of clamps 202, such as flat-jaw vises, V-blocks, and chucks, function according to the shape of the workpiece 108. The flat-jaw vises clamp square or rectangular workpieces 108 using two opposing carbide or hardened steel jaws. When the screw is rotated to bring the jaws closer, the pressure exerted on the workpiece 108 by the jaws is converted into frictional force, thus firmly clamping the workpiece 108. The V-groove angle of the V-block, such as 90° or 120°, allows the circular workpiece 108 to automatically center itself at the bottom of the V-groove due to gravity and the constraint of the groove wall after being placed inside. The chuck clamps the rotating workpiece 108 by the contraction and opening of its jaws. Its working principle utilizes the friction between the jaws and the workpiece 108, as well as the clamping force generated by the mechanical structure of the jaws, to fix the workpiece 108 in the center position of the chuck.

[0047] Finally, it should be noted that the above is merely to illustrate the technical solutions of the present application, and is not a limitation on the scope of protection of the present application, and simple modifications or equivalent replacements of the technical solutions of the present application by those skilled in the art do not deviate from the essence and scope of the technical solutions of the present application.

Claims

1. A multi-functional positioning fixture for robot welding, comprising a main body (1) and a positioning mechanism (2), wherein the positioning mechanism (2) is fixedly installed inside the main body (1), characterized in that: The main structure (1) includes a tooling table (101), a table surface (102), and a frame (103). The table surface (102) is fixedly installed on the top of the tooling table (101), and the frame (103) is fixedly installed on one side of the table surface (102). The positioning mechanism (2) includes a positioning pin (201), a clamp (202), and a positioning hole (203). The positioning pin (201) is fixedly installed on the surface of the table (102), the clamp (202) is fixedly installed on the table (102), and the positioning hole (203) is fixedly installed on the surface of the clamp (202).

2. The multi-functional positioning fixture for robot welding according to claim 1, characterized in that: The main structure (1) also includes a frame (104) and anchor bolts (105). The frame (104) is fixedly installed on the surface of the platform (103), and a number of anchor bolts (105) are fixedly installed at the bottom of the frame (104).

3. The multi-functional positioning fixture for robot welding according to claim 2, characterized in that: The main body (1) also includes a robot (106) and a motor (107). The robot (106) is fixedly installed on the surface of the tooling table (101), and a fixture (202) is fixedly installed on the robot (106). The motor (107) is fixedly installed inside the tooling table (101).

4. The multi-functional positioning fixture for robot welding according to claim 3, characterized in that: The main body (1) also includes a workpiece (108) and a tooling (109). The workpiece (108) is fixedly installed on the surface of the table (102), and the tooling (109) is fixedly installed on the surface of the table (102).

5. The multi-functional positioning fixture for robot welding according to claim 4, characterized in that: The positioning mechanism (2) also includes a turntable (204) and a bearing (205). The turntable (204) is fixedly installed at the bottom of the tooling table (101), and the bearing (205) is fixedly installed at the bottom of the turntable (204).

6. The multi-functional positioning fixture for robot welding according to claim 5, characterized in that: The positioning mechanism (2) also includes a flipping frame (206) and a rotating shaft (207). The flipping frame (206) is fixedly installed at both ends of the tooling table (101), and the rotating shaft (207) is fixedly connected to the flipping frame (206).

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