CN205393779U

CN205393779U - Stir -welding head for friction stir welding

Info

Publication number: CN205393779U
Application number: CN201620116528.XU
Authority: CN
Inventors: 光晓欢; 周正勇
Original assignee: Henan Normal Axis Technology Co Ltd
Current assignee: Henan Normal Axis Technology Co Ltd
Priority date: 2016-02-05
Filing date: 2016-02-05
Publication date: 2016-07-27
Anticipated expiration: 2026-02-05

Abstract

The utility model discloses a stir -welding head for friction stir welding belongs to friction stir welding and connects technological device field. This stirring head is including stirring the first shaft shoulder, and shank -pin is located and stirs first shaft shoulder below, the first shaft shoulder bottom surface of stirring be an inclined plane, stir first shaft shoulder bottom surface spindle shoulder and weld workpiece's contact surface, the direction on inclined plane do: the inclined plane inclines from the outside upwards direction in bottom surface center when the shank -pin direction is downward, and the contained angle between the plumb line of inclined plane and the first axis of stirring is at 1 -10. This stirring capitiform becomes compact welding seam, has improved weld quality, guarantees the stability of high reliability welding seam.

Description

A kind of stirring friction welding agitator head

Technical field

This utility model relates to a kind of agitating friction weldering parts, particularly to a kind of stirring friction welding agitator head, belongs to agitating friction solder technology device field.

Background technology

Agitating friction weldering is primarily directed to the connection of the non-ferrous metals such as aluminium alloy, has an advantage in that the weldquality of formation is high, and deflection is little, pollution-free in welding process, smoke dust and splashing, and noise is low simultaneously, energy-conserving and environment-protective etc.；So, the application of agitating friction solder technology is in continuous expansion.Stirring-head is the direct core component participating in agitating friction welding, and its structural design determines agitating friction welded seam quality, welding procedure, welding main axle unit structure and its service life.When existing stirring-head is stirred friction welding, stirring-head axis direction and welded part faying face need certain angle between the sealing wire tangent line that its surface is formed, here it is stirring-head welding inclination angle, shown in angle Y in Fig. 4, arrow show stirring-head direction of advance, and stirring-head direction of advance keeps concordance with sealing wire.Therefore, under this stirring-head welding process requirement, if being soldered line design have corner or break-in, need to be formed the weld seam of corner or break-in, in corner or break-in place owing to the technique of tilt angle exists indispensability, stirring-head needs change in the orientation at inclination angle when turning to, this is accomplished by controlling main axle unit connector by control system and does corresponding tilt variation, increasingly automated due to agitating friction soldering equipment, the change of this stirring-head well azimuth needs to design corresponding functional entity on main shaft and completes, also need to configure corresponding control program, this can cause main axle unit structure complicated, control difficulty big, cost is high, the generation of the problems such as connection member is fragile；If weld seam bending change is many, then current stirring-head also cannot realize more complicated welding procedure, moreover current stirring-head structure is excessively single, forms weldquality unstable during welding, and structure leakiness, welding main axle unit structure is complicated, and service life is shorter.

Summary of the invention

The purpose of this utility model is in that to overcome the drawbacks described above of existing stirring friction welding agitator head, it is provided that a kind of stirring friction welding agitator head.

nullFor realizing the purpose of this utility model，Have employed following technical scheme: a kind of stirring friction welding agitator head，Including the stirring-head shaft shoulder，Mixing needle is positioned at below the stirring-head shaft shoulder，Described stirring-head shaft shoulder bottom surface is an inclined-plane，Stirring-head shaft shoulder bottom surface spindle shoulder and the contact surface welding workpiece，The direction on described inclined-plane is: when mixing needle downwardly time inclined-plane tilt from the outside upward direction of bottom center，Angle between the vertical line of inclined-plane and stirring-head axis is at 1-10 °，Further，Angle between the vertical line of described inclined-plane and stirring-head axis is at 2-5 °，Further，Mixing needle is arranged in the middle of shaft shoulder bottom surface，Described mixing needle is a up big and down small cone，Helicla flute is offered at outer surface of cone，Described helicla flute is on average cut into three parts by three inclined-planes，Inclined-plane cuts away the part helix groove in cone circumference，Three inclined-planes are identical and are uniformly distributed in the circumference of cone，Further，Described stirring-head shaft shoulder bottom surface offers involute helical groove.

nullPositive Advantageous Effects of the present utility model is in that: this stirring-head is inclined-plane due to stirring-head shaft shoulder bottom surface，When stirring welding, stirring-head axis need not weld inclination angle，Remain between stirring-head shaft shoulder bottom surface and work surface form the gap required by welding procedure，So adopting this stirring-head operationally tilt angle can be zero，This mode is very easy to control at corner or turning point，It is no longer necessary on main shaft, be configured to adapt to weld seam turn to and required complicated machinery and control structure，Main axle structure is made to become more simple，So mixing needle axis is vertical with welding direction during this structure welding，Realize the welding of any welding direction mixing needle aclinal，Reduce the main axle unit structure driving mixing needle to rotate，Promote welding stability，Improve weldquality，This structure have employed helicla flute in shaft shoulder bottom surface，This helicla flute makes stirring-head, in the process being rotationally advancing, material are threaded to center，Make weld seam finer and close，This stirring-head weld seam both sides non-trimming when plane mixing needle aclinal is welded produces，Face of weld is smooth，Weld seam densification is without any defect.The structure of this stirring-head is conducive to the moulding softening layer of metal of formation around mixing needle to be substantially filled to mixing needle rear, the lower weld seam forming densification of effect that mixing needle and between centers are stirred together for and extrude, and improves weldquality, it is ensured that the stability of high reliability weld seam.

Accompanying drawing explanation

Fig. 1 is schematic diagram of the present utility model.

Fig. 2 is the enlarged drawing in Fig. 1 in a-quadrant.

Fig. 3 is upward view of the present utility model.

Fig. 4 is the schematic diagram of original tilt angle.

Fig. 5 is schematic perspective view of the present utility model.

Detailed description of the invention

In order to explain enforcement of the present utility model more fully, it is provided that embodiment of the present utility model.These embodiments are only to elaboration of the present utility model, are not intended to scope of the present utility model.

In conjunction with accompanying drawing to the further details of explanation of this utility model, accompanying drawing is respectively labeled as: 1: stirring-head clamping part；2: the stirring-head shaft shoulder；3: mixing needle；31: the inclined-plane a on mixing needle；33: the inclined-plane b on mixing needle；34: the inclined-plane c on mixing needle；32: the helicla flute on mixing needle；4: stirring-head shaft shoulder bottom surface；41: involute helical groove；nullAs shown in drawings，A kind of stirring friction welding agitator head，Including stirring-head clamping part 1 and the stirring-head shaft shoulder 2，Mixing needle 3 is positioned at below the stirring-head shaft shoulder 2，Described stirring-head shaft shoulder bottom surface 4 is an inclined-plane，Stirring-head shaft shoulder bottom surface spindle shoulder and the contact surface welding workpiece，The direction on described inclined-plane is: when mixing needle downwardly time inclined-plane tilt from the outside upward direction of bottom center，Angle between the vertical line of inclined-plane and stirring-head axis is at 1-10 °，Angle between the vertical line of described inclined-plane and stirring-head axis is at 2-5 °，Angle between the vertical line being relatively inclined-plane and stirring-head axis shown in B in Fig. 2，Mixing needle is arranged in the middle of shaft shoulder bottom surface，Described mixing needle is a up big and down small cone，Helicla flute is offered at outer surface of cone，Described helicla flute is on average cut into three parts by three inclined-planes，In figure, 32 show the helicla flute on a part of mixing needle，Three inclined-planes are equal with the angle of facies basialis pyramidis with cone generatrices with the angle of facies basialis pyramidis，Inclined-plane cuts away the part helix groove in cone circumference，Three inclined-planes are identical and are uniformly distributed in the circumference of cone，In figure 31、33、Inclined-plane a on respectively mixing needle shown in 34；33: the inclined-plane b on mixing needle；34: the inclined-plane c on mixing needle, stirring-head shaft shoulder bottom surface 4 offers involute helical groove；41 show involute helical groove.

After describing embodiment of the present utility model in detail, one of ordinary skilled in the art is clearly understood that, various change and amendment can be carried out under without departing from above-mentioned claim and spirit, all any simple modification, equivalent variations and modifications above example made according to technical spirit of the present utility model, belong to the scope of technical solutions of the utility model, and this utility model is also not only restricted in description the embodiment of example.

Claims

1. a stirring friction welding agitator head, including the stirring-head shaft shoulder, mixing needle is positioned at below the stirring-head shaft shoulder, it is characterized in that: described stirring-head shaft shoulder bottom surface is an inclined-plane, stirring-head shaft shoulder bottom surface spindle shoulder and the contact surface welding workpiece, the direction on described inclined-plane is: when mixing needle downwardly time inclined-plane tilt from the outside upward direction of bottom center, the angle between the vertical line of inclined-plane and stirring-head axis is at 1-10 °.

2. a kind of stirring friction welding agitator head according to claim 1, it is characterised in that: the angle between the vertical line of described inclined-plane and stirring-head axis is at 2-5 °.

3. a kind of stirring friction welding agitator head according to claim 1, it is characterized in that: mixing needle is arranged in the middle of shaft shoulder bottom surface, described mixing needle is a up big and down small cone, helicla flute is offered at outer surface of cone, described helicla flute is on average cut into three parts by three inclined-planes, inclined-plane cuts away the part helix groove in cone circumference, and three inclined-planes are identical and are uniformly distributed in the circumference of cone.

4. a kind of stirring friction welding agitator head according to claim 3, it is characterised in that: described stirring-head shaft shoulder bottom surface offers involute helical groove.