CN206263435U - A kind of stirring tool - Google Patents

Abstract

The utility model is related to a kind of stirring tool, including the mixing needle, the shaft shoulder and the handle of a knife that are sequentially connected from the bottom up, screw thread is carved with the mixing needle, the mixing needle is in truncated cone shape, in cylinder, the ratio of the difference between the mixing needle root diameter (RD) and the shaft shoulder diameter and the agitating shaft root diameter (RD) is 0.618 to the shaft shoulder0.050, the tooth of the screw thread is 0.618 away from the ratio with pitch0.050.The utility model is by limiting the relative ratio of mixing needle and the shaft shoulder, the effective service life for extending mixing needle, improve the quality of weld seam, simultaneously by limiting ratio of the tooth of screw thread between pitch, it is not easy to remain base metals in the screw thread of postwelding mixing needle, avoid influenceing next weldquality, the favorable repeatability of welding quality, welding quality stable.

Description

A kind of stirring tool

Technical field

The utility model is related to a kind of stirring tool for agitating friction weldering.

Background technology

Agitating friction weldering because its welding efficiency is high, joint mechanical property is high, welding material need not be filled, to pre-welding treatment and The low feature of requirement of welding surroundings, has been widely used in the essential industrys such as Aero-Space, track traffic, automobile ship neck Domain.

Stirring tool is one of influence most important factor of agitating friction weldering welding quality.The stirring tool master for commonly using at present Two working portions of mixing needle and the shaft shoulder are included, generally screw thread is carved with mixing needle, mother metal is stirred with strengthening stirring tool Effect is mixed, the mobility and crystal grain thinning of material is improved, to obtain welding quality and broader technique coverage higher；Axle Shoulder Main Function is frictional heat and forces face of weld to be molded, and the proportionate relationship of shaft shoulder diameter and mixing needle diameter is directly determined Determine the service life of stirring tool and the surface quality of weld seam.

The experience of the design Main Basiss manufacturer of current stirring tool is carried out with the specific operating mode of welding, is had no general Design specification can seek, this resulted in stirring tool design variation, while also imply that outstanding design principle cannot It is promoted, what side reflected is waste caused by irrational design.Most of stirring tools currently used in the market There are problems that following two：（1）Irrational Design of Screw Thread, after causing welding to complete, the screw thread on mixing needle is embedded with Substantial amounts of base metals, it is that can bring in a kind of lower mother metal weld seam a kind of upper mother metal into that it is directly affected, while screw thread is embedded in A large amount of mother metals will likely influence the weldquality of second welding；（2）Irrational mixing needle and shaft shoulder diametric fit ratio, The ratio of mixing needle diameter/shaft shoulder diameter is too small will to cause mixing needle service life to decline, it is easy to fracture；Ratio crosses senior general to be caused Face of weld is easy to surface soldered defect occur, welding condition windows narrow.

Utility model content

The utility model overcomes the deficiencies in the prior art, there is provided a kind of stirring tool of simple structure.

To reach above-mentioned purpose, the technical solution adopted in the utility model is：A kind of stirring tool, including from the bottom up according to The mixing needle of secondary connection, the shaft shoulder and handle of a knife, are carved with screw thread on the mixing needle, the mixing needle is in truncated cone shape, and the shaft shoulder is in Cylinder, the ratio of the difference between the mixing needle root diameter (RD) and the shaft shoulder diameter and the mixing needle root diameter (RD) is 0.618 0.050, the tooth of the screw thread is 0.618 away from the ratio with pitch0.050。

In one preferred embodiment of the utility model, a kind of stirring tool further includes the shaft shoulder with the mixing needle The shaft shoulder end face that junction is formed caves inward.

In one preferred embodiment of the utility model, a kind of stirring tool further include the mixing needle root with it is described Arc transition between shaft shoulder end face.

In one preferred embodiment of the utility model, a kind of stirring tool further includes that the section of the handle of a knife is rounded Or rectangle.

In one preferred embodiment of the utility model, a kind of stirring tool further includes that the handle of a knife is provided with L-shaped and lacks Mouthful.

The utility model solves defect present in background technology, and the utility model is by limiting mixing needle with the shaft shoulder Relative ratio, effectively extends the service life of mixing needle, improves the quality of weld seam, at the same by limit the tooth of screw thread away from Ratio between pitch, is not easy to remain base metals in the screw thread of postwelding mixing needle, it is to avoid the next weldquality of influence, weldering Connect the favorable repeatability of quality, welding quality stable.

Brief description of the drawings

The utility model is further illustrated with reference to the accompanying drawings and examples.

Fig. 1 is the structural representation of preferred embodiment of the present utility model；

Fig. 2 is the enlarged diagram that the mixing needle of preferred embodiment of the present utility model and the shaft shoulder are connected.

Specific embodiment

The utility model is described in further detail presently in connection with drawings and Examples, these accompanying drawings are simplified Schematic diagram, only illustrates basic structure of the present utility model in a schematic way, therefore it only shows the structure relevant with the utility model Into.

As shown in Figure 1 and Figure 2, a kind of stirring tool, including mixing needle 2, the shaft shoulder 4 and the handle of a knife being sequentially connected from the bottom up 6, it is carved with screw thread 8 on mixing needle 2, mixing needle 2 is in truncated cone shape, is easy to insert between two pieces of base metals and is stirred fusion, axle In cylinder, the shaft shoulder 4 is used to produce heat and force face of weld to be molded shoulder 4, the setting of handle of a knife 6 be for agitating friction weldering The cooperation of lathe is installed, and drives mixing needle 2 to rotate, mixing needle root diameter (RD) d1 and shaft shoulder diameter d2 and mixing needle root diameter (RD) d1 Between difference ratio be 0.6180.050, that is, d1/（d2-d1）It is 0.6180.050, the use longevity of mixing needle 2 Life length, face of weld forming, welding condition window is wide, and the ratio of the tooth of screw thread 8 away from a and pitch b is 0.618 0.050, that is, a/b is 0.6180.050, it is not easy to remain base metals in the screw thread 8 of postwelding mixing needle 2, it is to avoid influence Next weldquality, the favorable repeatability of welding quality, welding quality stable.Further preferred d1/（d2-d1）It is golden ratio 0.618, a/b is golden ratio 0.618, the service life of stirring tool and performance is reached most preferably.

In order to avoid the diffusion of the plastic metal around weld seam so that plastic metal is collected at Weld pipe mill, this practicality is new The shaft shoulder end face 10 that the preferred shaft shoulder 4 of type is formed with the junction of mixing needle 2 caves inward.

Arc transition between the preferred root of mixing needle 2 of the utility model and shaft shoulder end face 10, it is to avoid the root of mixing needle 2 should Power is concentrated and fractureed, and extends the service life of mixing needle 2.

Cooperation for the ease of handle of a knife 6 and friction stir welding machine tool is installed, and the section of the preferred handle of a knife 6 of the utility model is in circle Shape, but it is not limited to circle, or rectangle.Further preferred handle of a knife 6 is provided with L-shaped breach 12, and handle of a knife 6 is stabilized in and stirs Mix on the main shaft of friction welding (FW) lathe, it is to avoid the relative movement between handle of a knife 6 and main shaft.

Use stirring tool of the present utility model to thickness for 20mm, model 6082-T6 aluminium alloys are welded When, welding rotary speed can be obtained in the range of 60-120mm/min in 300-500rpm, the speed of travel and meet standard requirement Weld seam.

It is above enlightenment according to desirable embodiment of the present utility model, by above-mentioned description, related personnel is complete Various changes and amendments can be carried out in the range of without departing from this utility model technological thought.This utility model The technical scope content that is not limited on specification, it is necessary to determine the technical scope according to the scope of the claims.

Claims (3)

1. a kind of stirring tool, including mixing needle, the shaft shoulder and the handle of a knife being sequentially connected from the bottom up, spiral shell is carved with the mixing needle Line, it is characterised in that：The mixing needle is in truncated cone shape, and the shaft shoulder is in cylinder, the shaft shoulder and the mixing needle junction The shaft shoulder end face of formation caves inward, arc transition between the mixing needle root and the shaft shoulder end face, the stirring crown The ratio of the difference between portion's diameter and the shaft shoulder diameter and the mixing needle root diameter (RD) is 0.6180.050, it is described The tooth of screw thread is 0.618 away from the ratio with pitch0.050。

2. a kind of stirring tool according to claim 1, it is characterised in that：The section of the handle of a knife is rounded or rectangle.

3. a kind of stirring tool according to claim 2, it is characterised in that：The handle of a knife is provided with L-shaped breach.