CN210060104U

CN210060104U - Friction welding device

Info

Publication number: CN210060104U
Application number: CN201920590674.XU
Authority: CN
Inventors: 支波
Original assignee: Jiaxing Sanjing Precision Technology Co Ltd
Current assignee: Jiaxing Sanjing Precision Technology Co Ltd
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2020-02-14
Anticipated expiration: 2029-04-26

Abstract

The utility model provides a friction welding device belongs to mechanical technical field. It has solved prior art and has had the poor problem of stability. The friction welding device comprises a rack, and further comprises a first driving piece, a second driving piece, a first clamp and a second clamp, wherein a guide rail is arranged on the upper portion of the rack, the second clamp is connected to the guide rail, the second clamp is connected with the first driving piece, the second clamp is fixedly connected to the rack, the second clamp is just opposite to the first clamp, and the first clamp can be driven to rotate by the second driving piece. This friction welding device stability is high.

Description

Friction welding device

Technical Field

The utility model belongs to the technical field of machinery, a friction welding device is related to.

Background

In the technical field of power batteries, a pole is a component communicating the inside and the outside of the battery in the power battery, and the current negative electrode of the power battery adopts a copper-aluminum composite pole. The copper and the aluminum are connected together through friction welding to form an integral composite pole, so that the composite pole has certain requirements on the bonding strength of a bonding surface.

At present, a friction welding machine completes welding actions under the control of a hydraulic system, but the welding of copper and aluminum dissimilar materials is sensitive to the control of temperature, pressure and welding length, the hydraulic system has unstable factors which affect the welding performance, so that a welded product has potential fracture risk, and when the hydraulic system is started at each time, a heat engine is needed to heat the oil temperature to reach a reasonable temperature range so as to ensure the stability of welding pressure, but the heat engine delays working hours at each time, and materials are wasted.

Disclosure of Invention

The first objective of the present invention is to solve the above problems in the prior art, and to provide a friction welding device with high stability and compact structure.

The second objective of the present invention is to provide a friction welding process adopted in the operation process of the friction welding device.

The first objective of the present invention can be achieved by the following technical solutions:

the friction welding device comprises a rack and is characterized by further comprising a first driving piece, a second driving piece, a first clamp and a second clamp, wherein a guide rail is arranged on the upper portion of the rack, the second clamp is connected to the guide rail and is connected with the first driving piece, the second clamp is fixedly connected to the rack and is just opposite to the first clamp, and the second driving piece can drive the first clamp to rotate.

The driving part two in the device drives the clamp one to continuously rotate. The first driving part drives the first clamp to translate, the translated first clamp can be close to the second clamp, and finally the first clamp and a workpiece on the second clamp are in stable contact.

After the workpieces are contacted, as the clamp continuously rotates, stable friction welding can be carried out between the two workpieces.

In the friction welding device, the second clamp is connected to a sliding block, the first driving piece can push the sliding block to move horizontally, and the second driving piece is fixedly connected to the sliding block.

The sliding block and the guide rail can be stably connected together, and the sliding block also provides an enough mounting position for mounting the driving part II.

In the friction welding device, the lower part of the sliding block is connected to the guide rail, the first driving piece is a motor, a rotating shaft of the motor is fixedly connected with a screw rod, and the sliding block is in threaded connection with the screw rod.

In the process that the motor drives the screw rod to rotate, the sliding block is in threaded connection with the screw rod, so that the sliding block can be driven to stably translate along the guide rail finally.

In the friction welding device, the driving member II is a motor, and a rotating shaft of the motor is fixedly connected with the clamp II.

The second driving part can drive the second clamp to stably rotate.

In the above friction welding apparatus, the first clamp is a three-jaw chuck, and the second clamp is a four-jaw chuck. The clamping jaw is used for clamping a square workpiece.

In the friction welding device, the first clamp and the second clamp are both hydraulic clamps.

In the friction welding device, the upper part of the rack is fixedly connected with the positioning plate, and the first driving piece is fixedly connected to the positioning plate.

In the friction welding device, the positioning plate comprises a first plate body and a second plate body which are flat-plate-shaped, the first plate body is horizontally arranged and fixedly connected with the frame, the second plate body is vertically and fixedly connected to the middle of the first plate body, and the first driving piece is fixedly connected to the side of the second plate body.

The contact area between the first plate body and the rack is large, and the second plate body can be stably connected with the second driving part. Finally, the driving part II can be stably connected to the frame.

The second objective of the present invention can be achieved by the following technical solutions:

a friction welding process, comprising the steps of:

A. clamping a workpiece: respectively clamping a workpiece A and a workpiece B on a first clamp and a second clamp;

B. feeding and welding: and the first clamp translates relative to the second clamp in the rotating process, the rotating workpiece A and the workpiece B gradually approach, and the workpiece A and the workpiece B are in contact and then subjected to friction welding operation.

The first clamp clamps the workpiece A, and the second clamp clamps the workpiece B. After the rotating clamp moves towards the second clamp, the rotating workpiece A is contacted with the workpiece B to complete the friction welding operation.

In the friction welding process, the first clamp in the step A is driven to translate through the servo motor, and the first clamp is opposite to the second clamp.

The servo motor can stably move and effectively improve the stability of friction welding operation.

In the friction welding process, in the step B, the workpiece a and the workpiece B are subjected to friction heating, and then upset welding is performed after the friction heating.

When the workpiece A is contacted with the workpiece B, the stage is a friction heating stage, and the workpiece A and the workpiece B are rubbed for a set time and reach a preset temperature. The driving member drives the fixture to feed again and again, and then the upset forging welding stage is started.

In the friction welding process, the friction heating in the step B includes four stages: initial friction, unstable friction, stable friction, and stop.

The initial friction is a stage when the workpiece A and the workpiece B are just contacted, the unstable friction is a stage a period of time after the workpiece A and the workpiece B are subjected to initial friction, the stable friction is a friction stage when the workpiece A and the workpiece B reach the preset temperature, and the stop is a stage after the workpiece A and the workpiece B finish friction heating.

In the friction welding process, the upset welding in the step B comprises two stages: pure upset and upset maintenance.

Pure upsetting is a stage when a driving part drives a workpiece A to feed to a workpiece B, and upsetting is maintained as a stage in the process of connecting the workpiece A and the workpiece B and cooling and forming.

The utility model discloses work piece A is the copper product material in creating, and work piece B is the aluminium material. The melting point of copper is 1083 ℃, the melting point of aluminum is 660 ℃, and the difference of the melting points is large, so the requirements on the control precision of the welding length, the pressure and the temperature are high, and a welding machine controlled by a hydraulic system is difficult to maintain stability and meet the industrial requirements. The utility model discloses the creation uses servo motor cooperation lead screw can accurate control, makes preheating, heating, top forge, the compression length, the compression speed, the compression time remain stable in four stages of pressurize among the welding process, and the welding strength that can keep every product like this can both reach the requirement.

Compared with the prior art, the friction welding device drives the clamp to move horizontally towards the clamp II through the servo motor, so that the whole friction welding operation is high in stability.

Meanwhile, in the friction welding process, the workpiece A and the workpiece B are subjected to upset welding after friction heating, the friction heating comprises four stages, and the upset welding comprises two stages, so that the process is accurately controlled, the stability of welding length and pressure is effectively guaranteed, the actual welding parameter deviation of each product is kept in a controllable range, the welding strength is guaranteed, the response speed of the servo motor is high, the production efficiency can be effectively improved, the welding time is saved, and the production cost is saved.

Drawings

FIG. 1 is a schematic view of the friction welding apparatus.

In the figure, 1, a frame; 2. a first driving part; 3. a driving part II; 4. a first clamp; 5. a second clamp; 6. a guide rail; 7. a slider; 8. positioning a plate; 8a, a first plate body; 8b and a second plate body.

Detailed Description

As shown in figure 1, the friction welding device comprises a rack 1, and further comprises a first driving part 2, a second driving part 3, a first clamp 4 and a second clamp 5, wherein a guide rail 6 is arranged on the upper portion of the rack 1, the second clamp 5 is connected to the guide rail 6, the second clamp 5 is connected with the first driving part 2, the second clamp 5 is fixedly connected to the rack 1, the second clamp 5 is opposite to the first clamp 4, and the second driving part 3 can drive the first clamp 4 to rotate.

The second fixture 5 is connected to a sliding block 7, the first driving part 2 can push the sliding block 7 to move horizontally, and the second driving part 3 is fixedly connected to the sliding block 7.

The lower portion of the sliding block 7 is connected to the guide rail 6, the first driving piece 2 is a motor, a screw rod is fixedly connected to a rotating shaft of the motor, and the sliding block 7 is in threaded connection with the screw rod.

The second driving piece 3 is a motor, and a rotating shaft of the motor is fixedly connected with the second clamp 5.

The first clamp 4 is a three-jaw chuck, and the second clamp 5 is a four-jaw chuck. According to the actual situation, it is also possible that the first clamp 4 and the second clamp 5 are both hydraulic clamps.

The upper portion of the frame 1 is fixedly connected with a positioning plate 8, and the driving piece I2 is fixedly connected to the positioning plate 8.

The locating plate 8 comprises a first plate body 8a and a second plate body 8b which are flat-plate-shaped, the first plate body 8a is horizontally arranged and fixedly connected with the rack 1, the second plate body 8b is vertically and fixedly connected to the middle of the first plate body 8a, and the first driving piece 2 is fixedly connected to the lateral portion of the second plate body 8 b.

The friction welding process comprises the following steps:

A. clamping a workpiece: respectively clamping a workpiece A and a workpiece B on a first clamp 4 and a second clamp 5;

B. feeding and welding: and the first clamp 4 moves horizontally 5 relative to the second clamp in the rotating process, the rotating workpiece A and the rotating workpiece B gradually approach, and the workpiece A and the workpiece B are in contact and then subjected to friction welding operation.

In the step A, the first clamp is driven to translate through the servo motor, and the first clamp is opposite to the second clamp.

In the step B, the workpiece A and the workpiece B are subjected to friction heating, and then upset welding is performed after the friction heating.

The friction heating in the step B comprises four stages: initial friction, unstable friction, stable friction, and stop.

The upset welding in the step B comprises two stages: pure upset and upset maintenance.

Claims

1. The friction welding device comprises a rack and is characterized by further comprising a first driving piece, a second driving piece, a first clamp and a second clamp, wherein a guide rail is arranged on the upper portion of the rack, the second clamp is connected to the guide rail and is connected with the first driving piece, the second clamp is fixedly connected to the rack and is just opposite to the first clamp, and the second driving piece can drive the first clamp to rotate.

2. The friction welding apparatus of claim 1 wherein said second clamp is attached to a slide block, said first drive member is capable of translating said slide block, and said second drive member is attached to said slide block.

3. The friction welding apparatus of claim 2, wherein the lower portion of the slide block is connected to the guide rail, the first driving member is a motor, a screw rod is connected to a rotating shaft of the motor, and the slide block is in threaded connection with the screw rod.

4. The friction welding device of claim 3, wherein the second driving member is a motor, and a rotating shaft of the motor is fixedly connected with the second clamp.

5. The friction welding apparatus of claim 4 wherein said first clamp is a three-jaw chuck and said second clamp is a four-jaw chuck.

6. The friction welding apparatus of claim 4 wherein said first and second clamps are hydraulic clamps.

7. A friction welding apparatus as set forth in claim 5 wherein said frame is fixedly secured at an upper portion thereof to a retaining plate, said drive member being fixedly secured to said retaining plate.

8. The friction welding apparatus of claim 7, wherein the positioning plate comprises a first plate and a second plate, wherein the first plate is in a flat plate shape, the first plate is horizontally arranged and fixedly connected with the frame, the second plate is vertically and fixedly connected to a middle portion of the first plate, and the first driving member is fixedly connected to side portions of the second plate.