Welding fixture for metal workpiece machining

Abstract

A welding clamp for metal workpiece machining effectively solves the problem of low welding efficiency and comprises a base, a rack is fixed to the left side and the right side of the base, a clamping device is arranged on the rack and comprises a rotating shaft arranged in the horizontal direction, the rotating shaft is rotationally connected with the rack, and a first belt wheel and a sleeve are coaxially fixed to the rotating shaft. A transmission shaft in the horizontal direction is arranged above the base, the left end and the right end of the transmission shaft are rotationally connected with the racks on the left side and the right side correspondingly, and a second belt wheel located below the first belt wheel is coaxially fixed to the transmission shaft; the first belt pulley and the second belt pulley are connected through a belt.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal workpiece processing, and particularly relates to a welding fixture for metal workpiece processing. Background Art

[0002] Metal workpieces refer to the general term for various metal blocks, metal rods, metal pipes, etc. made of metal materials. Welding is a manufacturing process that combines heating, pressure, or both to bond metal workpieces at the atomic or molecular level, and is widely used in fields such as automobiles and aerospace. After the current welding fixture clamps and fixes the metal workpiece, it is not convenient to turn over the metal workpiece, reducing the welding efficiency of the metal plate and causing inconvenience to the staff. Content of the Utility Model

[0003] In view of the above situation, to overcome the defects of the prior art, the purpose of the utility model is to provide a welding fixture for metal workpiece processing, effectively solving the problem of low welding efficiency.

[0004] The technical solution for solving the technical problem is: it includes a base, with frames fixed on the left and right sides of the base. A clamping device is provided on the frames. The clamping device includes a rotating shaft arranged horizontally, the rotating shaft is rotatably connected to the frames, the rotating shaft is coaxially fixed with a first pulley and a sleeve, the rotating shaft is located between the first pulley and the sleeve, a spline shaft is connected to the rotating shaft through internal splines, and a claw is fixed on the spline shaft outside the first pulley. Above the base, a transmission shaft is arranged horizontally, the left and right ends of the transmission shaft are respectively rotatably connected to the left and right frames, and the transmission shaft is coaxially fixed with a second pulley below the first pulley. The first pulley and the second pulley are connected by a belt.

[0005] Preferably, a vertical hydraulic cylinder is installed on the base, the telescopic end of the hydraulic cylinder is fixed with a tray, the tray holds the metal workpiece, and the two clamping devices are symmetric about the tray left and right.

[0006] Preferably, a first locking bolt corresponding to the spline shaft is provided on the sleeve, a plurality of second locking bolts are provided on the claw, and an anti-slip pad is installed at the bottom of the second tightening bolt.

[0007] Preferably, a handle is fixed on the spline shaft outside the sleeve.

[0008] Preferably, a motor is installed on the frame, and the motor is coaxially fixedly connected to the transmission shaft through a reducer.

[0009] The utility model has the following advantages compared with traditional equipment: 1) The structure is ingenious. The rotating shaft and the spline shaft are spline-connected, and the spline shaft can be adjusted to slide left and right, so that the two clamping devices can approach or move away from the metal workpiece, which is suitable for the installation and positioning of metal workpieces of different sizes and ensures the welding quality of the metal workpiece in the later stage; 2) The transmission shaft drives the two clamping devices to rotate synchronously through belt transmission, and the linkage is good. The two clamping devices drive the metal workpiece to rotate synchronously, realizing the flip welding of the metal workpiece. The operation is flexible, and the front and back sides of the metal workpiece can be welded, and the welding efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic diagram of the front view of the utility model;

[0011] Figure 2 is a schematic diagram of the three-dimensional structure of the utility model;

[0012] Figure 3 is a schematic diagram of the three-dimensional structure of the clamping device in the utility model.

[0013] Reference numerals: 1, base; 2, frame; 3, rotating shaft; 4, first pulley; 5, sleeve; 6, spline shaft; 7, jaw; 8, transmission shaft; 9, second pulley; 10, hydraulic cylinder; 11, tray; 12, first locking bolt; 13, second locking bolt; 14, handle; 15, motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The following further describes in detail the specific embodiments of the utility model with reference to the accompanying drawings.

[0015] Provided by Figures 1 to 3 A welding fixture for machining metal workpieces includes a base 1. Frames 2 are fixed on the left and right sides of the base 1. A clamping device is provided on the frames 2. The clamping device includes a horizontally arranged rotating shaft 3, and the rotating shaft 3 is rotatably connected to the frames 2. A first pulley 4 and a sleeve 5 are coaxially fixed on the rotating shaft 3. The rotating shaft 3 is located between the first pulley 4 and the sleeve 5. A spline shaft 6 is connected to the rotating shaft 3 by internal splines. A jaw 7 located outside the first pulley 4 is fixed on the spline shaft 6. A horizontally arranged transmission shaft 8 is provided above the base 1. The left and right ends of the transmission shaft 8 are respectively rotatably connected to the left and right frames 2. A second pulley 9 located below the first pulley 4 is coaxially fixed on the transmission shaft 8. The first pulley 4 and the second pulley 9 are connected by a belt.

[0016] A vertical hydraulic cylinder 10 is installed on the base 1. A tray 11 is fixed at the telescopic end of the hydraulic cylinder 10. A metal workpiece is placed on the tray 11. The two clamping devices are symmetric about the tray 11 left and right.

[0017] A first locking bolt 12 corresponding to the spline shaft 6 is provided on the sleeve 5, and a plurality of second locking bolts 13 are provided on the claw 7. An anti-slip pad is installed at the bottom of the second locking bolt 13.

[0018] In order to facilitate the left and right sliding of the spline shaft 6 within the rotating shaft 3, a handle 14 located outside the sleeve 5 is fixed on the spline shaft 6.

[0019] A motor 15 is installed on the frame 2, and the motor 15 is coaxially and fixedly connected to the transmission shaft 8 through a speed reducer.

[0020] When the present utility model is in use, first place the metal workpiece to be welded on the tray 11, start the hydraulic cylinder 10, and the hydraulic cylinder 10 drives the tray 11 and the metal workpiece to rise to an appropriate height. The operator holds the handle 14 and moves the clamping devices on the left and right sides closer to the metal workpiece. When the claws 7 on the left and right sides both clamp the metal workpiece tightly, tighten the second locking bolts 13 to fix the left and right ends of the metal workpiece in the corresponding claws 7 respectively. Then tighten the first locking bolt 12 to fix the sleeve 5 and the spline shaft 6 together to prevent the spline shaft 6 from moving in the left and right directions. Start the welding equipment, and the welding equipment can perform welding operations on the front surface of the metal workpiece.

[0021] When the front surface of the metal workpiece is welded and it needs to be turned over for welding, start the hydraulic cylinder 10, and the hydraulic cylinder 10 drives the tray 11 to move downward away from the metal workpiece. Then start the motor 15, and the motor 15 drives the transmission shaft 8 to rotate through the speed reducer to ensure an appropriate rotation speed of the transmission shaft 8. The transmission shaft 8 drives the two second belt pulleys 9 to rotate coaxially. The second belt pulleys 9 drive the first belt pulley 4 to rotate through the belt. The first belt pulley 4 drives the rotating shaft 3, the sleeve 5, the spline shaft 6, and the claws 7 to rotate synchronously, thereby realizing the simultaneous rotation of the clamping devices on the left and right sides and ensuring the stability of the rotation of the metal workpiece. The belt pulley transmission is adopted to increase the moving space of the metal workpiece. During the flipping process of the metal workpiece, the metal workpiece will not interfere with the tray 11 and the transmission shaft 8. When the back surface of the metal workpiece faces upward, turn off the motor 15, and then start the hydraulic cylinder 10. The hydraulic cylinder 10 drives the tray 11 to move upward to support the metal workpiece. When the tray 11 contacts the metal workpiece, turn off the hydraulic cylinder 10 to further ensure the stability of the metal workpiece. Start the welding equipment, and the welding equipment can perform welding operations on the back surface of the metal workpiece. The operation is simple, and the front and back surfaces of the metal workpiece are welded to improve the welding work efficiency, saving time and effort, and being safe and reliable.

[0022] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the present utility model. Any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present utility model all belong to the protection scope of the technical solution of the present utility model.

Claims

1. A welding fixture for metal workpiece processing, characterized in that: The invention comprises a base (1), wherein a frame (2) is fixed on the left and right sides of the base (1), a clamping device is provided on the frame (2), and the clamping device comprises a rotating shaft (3) arranged in a horizontal direction, the rotating shaft (3) is rotatably connected to the frame (2), a first belt pulley (4) and a sleeve (5) are coaxially fixed to the rotating shaft (3), the rotating shaft (3) is located between the first belt pulley (4) and the sleeve (5), a spline shaft (6) is spline-connected inside the rotating shaft (3), a clamping claw (7) located outside the first belt pulley (4) is fixed on the spline shaft (6), a transmission shaft (8) in a horizontal direction is provided above the base (1), the left and right ends of the transmission shaft (8) are rotatably connected to the frames (2) on the left and right sides respectively, a second belt pulley (9) located below the first belt pulley (4) is coaxially fixed to the transmission shaft (8), and the first belt pulley (4) and the second belt pulley (9) are connected via a belt.

2. A welding fixture for metal workpiece processing according to claim 1, characterized in that: A hydraulic cylinder (10) is mounted in a vertical direction on the base (1), a pallet (11) is fixed to the telescopic end of the hydraulic cylinder (10), a metal workpiece is placed on the pallet (11), and two clamping devices are symmetrical about the pallet (11).

3. A welding fixture for metal workpiece processing according to claim 1, characterized in that: The sleeve (5) is provided with a first locking bolt (12) corresponding to the spline shaft (6), the claw (7) is provided with a plurality of second locking bolts (13), and an anti-slip pad is installed at the bottom of the second locking bolt (13).

4. A welding fixture for metal workpiece processing according to claim 1, characterized in that: A handle (14) located outside the sleeve (5) is fixed on the spline shaft (6).

5. A welding fixture for metal workpiece processing according to claim 1, characterized in that: A motor (15) is mounted on the frame (2), and the motor (15) is coaxially fixedly connected to the transmission shaft (8) via a reducer.

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