Friction-stir welding equipment

A technology of friction stir welding and equipment, which is applied in welding equipment, non-electric welding equipment, metal processing equipment, etc., can solve the problems of restricting the application of friction stir welding technology, increasing the production cost of enterprises, and scrapping the stirring head, so as to promote comprehensive promotion and Large-scale application, reduction of torsional or impact force, material and cost saving effects

Active Publication Date: 2015-10-21
重庆派馨特机电有限公司
8 Cites 21 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0003] In the actual friction stir welding process, the friction stir welding equipment used in the industry often adopts a fixed worktable, and realizes the welding between metals through the movement of the X-axis, Y-axis and other directions of the stirring head, so that the equipment volume is relatively small. Huge and bulky, resulting in high equipment production costs, which greatly limits the application of friction stir welding technology in the civil industry, and ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Method used

As shown in Fig. 5, Fig. 8, Fig. 9, stirring needle is conical or cylindrical, and its circumferential surface is vertically distributed with concavo-convex lines, and described stirring needle bottom surface is plane or curved surface, and stirring needle bottom surface is arranged in parallel Multi-stripe lines are set, or multi-stripe lines are set at intersections, and the lines are composed of grooves or raised lines to increase the friction of the stirring needle.
On the one hand, the floating support structure of the present invention can keep the pressure constant during welding and improve the quality of the welded joint; on the other hand, when there are unexpected situations such as disturbances, the floating support structure can reduce the torsion or impact force that the stirring head bears , It is easy to protect the stirring head, so that it is not easy to break and prolong the service life of the stirring head. The main shaft drive part only needs to rotate and move in the vertical direction, and the adjustment of the welding position is realized by moving the worktable back and forth, left and right, so that the structure of the main shaf...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Abstract

The invention provides friction-stir welding equipment. The friction-stir welding equipment comprises a machine tool body for friction-stir welding. A stir head is installed on a spindle of the machine tool body. A floating supporting structure is arranged between the stir head and the spindle and comprises a connecting component and an elastic supporting piece. The connecting component is fixed to the spindle, the lower portion of the connecting component and the upper portion of the stir head are matched through a plurality of concave parts and convex parts, and the connecting component and the stir head can rotate synchronously. The elastic supporting piece is arranged between the lower end of the connecting component and the upper end of the stir head in an abutting mode. A limiting structure is arranged on the connecting component and used for preventing the stir head from disengaging from the lower end of the connecting component. The friction-stir welding equipment can keep pressure constant in welding and improve the quality of welded joints. When disturbance or other accidents occur, torsion or impact force on the stir head can be reduced, so that the stir head is easy to protect and not prone to fracture, and the service life of the stir head is prolonged. The structure of the spindle is simplified, so that the whole equipment has a light weight and a small size, materials are saved, and cost is lowered.

Application Domain

Technology Topic

EngineeringFriction stir welding +2

Image

  • Friction-stir welding equipment
  • Friction-stir welding equipment
  • Friction-stir welding equipment

Examples

  • Experimental program(1)

Example Embodiment

[0064] The following specific examples illustrate the implementation of the invention. Those familiar with this technology can easily understand other advantages and effects of the invention from the content disclosed in this specification.
[0065] Such as Figure 1 to Figure 3 As shown, the present invention provides a friction stir welding equipment, including a machine tool body for friction stir welding, a stirring head is installed on the main shaft of the machine tool body, a floating support structure is provided between the stirring head and the main shaft, and the floating support structure It includes a connecting part 44 and an elastic support. The connecting part 44 is fixed to the main shaft. The lower part of the connecting part 44 and the upper part of the mixing head are matched by a plurality of concave and convex parts, and can be rotated synchronously. The elastic support rests on the lower end of the connecting part 44 and the mixing head. Between the upper ends, and the connecting part 44 is provided with a limiting structure to prevent the stirring head from falling out of the lower end of the connecting part 44. The stirring head includes a shoulder, a stirring needle, and a stirring head body for connecting with the connecting part 44. This example The main body of the machine tool includes a base 1, a spindle support 2, a left and right propulsion mechanism 5, a front and rear propulsion mechanism 6 and a workbench 7. The left and right propulsion mechanism 5 is installed on the base 1, and the front and rear propulsion mechanism 6 is installed on the left and right propulsion mechanism through a first sliding mechanism. 5, the workbench 7 is installed on the front and rear propulsion mechanism 6 through the second sliding mechanism; the spindle support 2 is provided with a first guide rail 32 and a vertical propulsion mechanism 3 along the vertical direction, and a first guide rail 32 is slidably mounted on the first guide rail 32. The support base 33 is connected to the up-and-down propulsion mechanism 3. The first support base 33 is provided with a rotating motor 81 and a main shaft 85. The rotating motor 81 and the main shaft 85 respectively pass through the first support plate 82 and the second support plate 84 is mounted on the first support base 33, the rotating motor 81 and the main shaft 85 are connected by a coupling 83, and a bearing is arranged between the main shaft 85 and the second supporting plate 84. The mixing head 4 is located above the worktable 7.
[0066] Further as Figure 4 to Figure 7 Shown:
[0067] In this example, the connecting member 44 is cylindrical, and the center of the lower end of the connecting member 44 is provided with a support mounting hole 45, the elastic support is located in the support mounting hole 45, and the upper end of the mixing head body is provided with a boss for positioning the elastic support 2-4 positioning holes 46 are provided around the supporting member mounting hole 45 on the lower end surface of the connecting member 44, and a plurality of positioning posts 47 corresponding to the positioning holes 46 are provided on the upper end of the mixing head body, and the positioning posts 47 extend into In the positioning hole 46, the connecting member 44 and the stirring head can rotate synchronously. In order to facilitate the guidance during connection, the upper end of the positioning post 47 is tapered, and the edge of the positioning hole 46 is provided with a chamfer.
[0068] Of course, in other embodiments, the lower end of the connecting member 44 and the upper end of the mixing head main body can be driven by matching claws, similar to the claw structure of a coupling. In this example, the elastic support is a spring 10. It can also be other elastic structures that can withstand larger loads.
[0069] The limiting structure includes a locking rod 49, a locking hole provided on the connecting member 44, and a strip limiting hole 48 provided on the main body of the mixing head. The locking rod 49 passes through the locking hole and the strip limiting hole 48 The agitating head is restricted from escaping from the connecting part 44, and the agitating head is moved up and down relative to the connecting part 44 through the strip-shaped limiting hole 48. The length of the strip-shaped limiting hole 48 in the vertical direction should ensure that when the spring 10 is fully compressed, the upper end of the protruding column does not conflict with the bottom of the support mounting hole 45.
[0070] Further as figure 2 As shown, the left and right propulsion mechanism 5 includes a first motor 51 and a first screw nut pair. The first motor 51 is installed on the base 1 through the first motor 51 mounting seat, and the first screw 52 is horizontally arranged on the base 1, and Connected to the first motor 51, the first sliding mechanism is composed of a first sliding seat 54 and a first sliding rail 53, the first sliding rail 53 and the first screw 52 are arranged on the base 1 in parallel, and the first sliding seat 54 is erected On the first sliding rail 53, the first sliding seat 54 is threadedly engaged with the first screw 52. The front and rear propulsion mechanism 6 is mounted on the first mounting base 64, and the first mounting base 64 is fixed on the first sliding base 54. The front and rear propulsion mechanism 6 includes a second motor 61 and a second screw nut pair. The second motor 61 passes through the The second motor mounting seat is mounted on the first mounting seat 64, the second screw rod 62 is horizontally arranged on the first mounting seat 64 and connected to the second motor 61, and the second sliding mechanism is composed of the second sliding seat 65 and the second sliding seat. The second sliding rail 63 and the second screw 62 are arranged on the first mounting seat 64 in parallel, the second sliding seat 65 is erected on the second sliding rail 63, the second sliding seat 65 and the second screw 62 threaded fit, the workbench 7 is installed on the second sliding seat 65.
[0071] In this example, the up-and-down propulsion mechanism 3 includes a hydraulic cylinder 31 and a drive rod connected to the lower end of the hydraulic cylinder 31. The drive rod is connected to the first support base 33. In other embodiments, it may also be a cylinder or a motor and screw rod combination. The workbench 7 includes a rigid support table and a pressing mechanism set on the support table. The pressing mechanism can be a combination of bolts and a pressing plate. The support table is provided with a plurality of threaded mounting holes 71, and the pressing mechanism is installed in the mounting holes. 71 within. Before welding, place the workpiece to be welded on a rigid support table and clamp it with a compression device to achieve rigid fixation of the workpiece. A number of evenly distributed threaded holes are arranged on the worktable 7 to facilitate the selection of suitable methods and positions to fix the welded workpiece.
[0072] The first slide rail 53, the second slide rail 63, and the first guide rail 32 are all provided with a photoelectric limit switch device 9; the photoelectric limit switch device 9 is composed of a limit switch mounting slide and a photoelectric limit switch. The limit switch device 9 is installed on either side of the first slide rail 53, the second slide rail 63 and the first guide rail 32; when the slider exceeds the limit, the optical path between the photoelectric switch transmitter and receiver is cut off, Send out an over-limit signal to ensure reliable operation of the friction stir welding device. In this example, the rotating motor 81, the first motor 51, and the second motor 61 all use servo motors, which are easy to control and have high precision. Of course, they also include a control system, etc., which are connected to each servo motor for control. In other embodiments, the body of the machine tool can also have a conventional gantry structure, that is, the spindle moves in the Z and Y directions, and the worktable moves in the X direction.
[0073] Such as Figure 5 , Figure 8 , Picture 9 As shown, the stirring needle is conical or cylindrical, with uneven lines longitudinally distributed on its peripheral surface, the bottom surface of the stirring needle is flat or curved, and the bottom surface of the stirring needle is arranged in parallel with multi-stripe paths or crossed with multiple stripes. The pattern is composed of grooves or ridges to increase the friction of the stirring needle.
[0074] On the one hand, the floating support structure of the present invention can keep the pressure constant during welding and improve the quality of the welded joint; on the other hand, when there are unexpected situations such as disturbances, the floating support structure can reduce the torsion or impact force of the stirring head and is easy to protect The mixing head makes it difficult to break and prolongs the service life of the mixing head. The main shaft drive part only needs to rotate and move in the vertical direction, and the welding position can be adjusted by moving the worktable back and forth, left and right, so that the main shaft part of the equipment has a simpler structure, lighter weight, and overall miniaturization of the device.
[0075] Anyone familiar with this technology can modify or change the above-mentioned embodiments without departing from the spirit and scope of the invention. Therefore, all equivalent modifications or changes made by persons with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the invention should still be covered by the claims of the invention.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

no PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Similar technology patents

Classification and recommendation of technical efficacy words

Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products