CN218612232U - Vertical zero-angle friction stir welding device - Google Patents
Vertical zero-angle friction stir welding device Download PDFInfo
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- CN218612232U CN218612232U CN202223224580.1U CN202223224580U CN218612232U CN 218612232 U CN218612232 U CN 218612232U CN 202223224580 U CN202223224580 U CN 202223224580U CN 218612232 U CN218612232 U CN 218612232U
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Abstract
The utility model discloses a perpendicular zero angle friction stir welding device, including stirring needle and stirring head main part, wherein the stirring needle is inserted and is established in the mounting hole in the middle of the preceding terminal surface of stirring head main part, is equipped with the fixed that the tight bolt in top is used for the stirring needle on the lateral wall of mounting hole. The middle part of the front end face of the stirring pin is a plane, circular arc transition is formed between the outer edge of the plane and the conical surface of the side face of the front part of the stirring pin, an involute spiral groove is machined in the front end face of the stirring pin, the pitch of the spiral groove is 1mm, the cross section of the spiral groove is in a semicircular shape with the radius of 0.25mm, and the spiral groove is distributed clockwise from inside to outside. Has the advantages that: the welding device can be vertically installed at a zero angle during welding, the back inclination angle of the device does not need to be adjusted, hardware requirements on welding equipment such as main shaft inclination, transmission, C-axis follow-up and the like do not exist, and low-cost and high-quality welding of in-plane welding seams can be achieved. The friction stir welding of welding materials with the thickness of 3mm-6mm can be realized, and the quick and low-cost replacement of the friction stir welding easily-worn component is realized.
Description
Technical Field
The utility model relates to a friction welding device, in particular to perpendicular zero angle friction stir welding device.
Background
At present, friction stir welding is a novel solid-phase welding technology, and the friction stir welding utilizes the high temperature generated by the stirring and friction action between a shaft shoulder and a stirring needle and a base metal to realize intermetallic welding connection. The friction stir welding can effectively avoid the problems of welding metallurgy such as air holes and cracks during the fusion welding of metals such as aluminum alloy and the like, has high welding efficiency, is environment-friendly and pollution-free, and is popularized and applied in the fields of aerospace, new energy automobiles, rail transit and the like. In the general friction stir welding process, a welding device needs to be adjusted to have a back inclination angle of 2-3 degrees so as to meet the constraint and extrusion effects of the friction stir welding device on high-temperature plastic metal in the welding process, and therefore a qualified welding joint is formed. The special requirement for the back rake angle necessitates friction stir welding equipment with a tool shank that is angled back and forth and a corresponding coupling to transmit the spindle torque. Meanwhile, if the welding of the in-plane welding seam is required to be realized, the equipment must also be provided with a C-axis follow-up steering mechanism, which increases the hardware technical requirements and the cost of the friction stir welding equipment to a certain extent and limits the application of the friction stir welding technology. The vertical fixed zero-angle friction stir welding device adopts a special mechanism design, and can realize the friction, stirring, gathering, extruding and forming effects of the friction, stirring, gathering, extruding and forming of the friction stir welding device on welding metal when welding is carried out in a state without a back inclination angle, thereby reducing the hardware requirements on welding equipment, reducing the production cost and having wide application prospect.
Disclosure of Invention
The utility model aims at solving a great deal of problems existing in the use of the existing friction stir welding device, and providing a vertical zero-angle friction stir welding device.
The utility model provides a zero angle friction stir welding device perpendicularly is including stirring needle and stirring head main part, wherein the stirring needle is inserted and is established in the mounting hole in the middle of the preceding terminal surface of stirring head main part, is equipped with the fixed that the puller bolt is used for the stirring needle on the lateral wall of mounting hole.
The middle part of the front end face of the stirring pin is a plane, circular arc transition is formed between the outer edge of the plane and the conical surface of the side face of the front part of the stirring pin, an involute spiral groove is machined in the front end face of the stirring pin, the pitch of the spiral groove is 1mm, the cross section of the spiral groove is in a semicircular shape with the radius of 0.25mm, and the spiral groove is distributed clockwise from inside to outside.
The front part of the stirring pin is a working section, the working section of the stirring pin is conical, the diameter of the bottom of the working section is 7mm, the diameter of the end part of the working section is 5mm, the outer conical surface of the working section is provided with forward rotation grooves, the distance between the forward rotation grooves is 1mm, the forward rotation grooves are V-shaped, the depth of the forward rotation grooves is 0.6mm, three groups of 120-degree symmetrical excircle planes are further processed on the outer conical surface of the working section of the stirring pin, the depth of each excircle plane is 0.7mm, the angle of each excircle plane is the same as that of the conical surface of the stirring pin, the length of the working section of the stirring pin is 3-6mm according to the plate thickness, the stirring pin with the length determined by the plate thickness can meet the requirement that the stirring pins with different lengths are adapted to the same tool main body, and therefore welding of materials with different plate thicknesses can be completed.
The rear portion of stirring pin is the canned paragraph, and the stirring pin canned paragraph is diameter 7 mm's cylinder, and the side processing of canned paragraph has the side top plane, adopts M6 puller bolt to make stirring pin and stirring head main part be connected the fastening and can synchronous revolution through the side top plane.
The front end face of the stirring head main body is an inwards concave conical face, the inwards concave angle of the conical face is 5 degrees, the outer edge of the front end face is a chamfer of 1mm multiplied by 45 degrees, an involute flow guide groove is further arranged on the front end face, the cross section of the flow guide groove is a semicircle with the radius of 0.5mm, and the thread pitch of the flow guide groove is 1.8mm.
The front portion that stirring head main part and stirring needle linked firmly mutually is the heat dissipation section, and the diameter of heat dissipation section is 28mm, and the radiating groove has been seted up to the outer disc of heat dissipation section, and the radiating groove is the trapezoidal slot that four groups equidistance distributed, and trapezoidal slot degree of depth is 0.8mm, and trapezoidal slot upper portion width 2.12mm, trapezoidal slot lower part width 1.2mm, the interval 4mm of adjacent trapezoidal slot.
The rear portion of the stirring head main body is a clamping section, the diameter of the clamping section is 20mm, the clamping section is provided with a fastening plane, and the stirring head main body can be installed on a tool handle of common friction stir welding equipment through the fastening plane.
The utility model discloses a theory of operation:
the utility model provides a perpendicular zero angle friction stir welding device refers to earlier when using and is selected suitable pin stirrer by the thick selection of welded plate to fix the pin stirrer in the first main part of stirring. The stirring head main body is fixed on a 20mm universal side-jacking type knife handle of friction stir welding equipment or special machining equipment and is jacked tightly through a fastening plane by bolts. During welding, the friction stir welding device rotates anticlockwise at high speed, and generates stirring and friction effects with welding materials through the shaft shoulder and the stirring needle, the generated friction heat and plastic deformation heat enable welding base materials to reach a high-temperature plasticizing state, and plastic metal moves from outside to inside under the driving of the flow guide groove on the front end face of the stirring head main body, so that the overflow of metal in a welding nucleus area is avoided. Meanwhile, the concave conical surface design of the front end surface of the stirring head main body also plays a role in accommodating plastic metal, promoting the mixing of the plastic metal and avoiding the overflow of the metal. In the welding process, the design of a large chamfer angle of 1mm multiplied by 45 degrees at the outer edge of the shaft shoulder of the main body of the stirring head is beneficial to the high-speed advance and direction change of a welding device on the surface of base metal. The excircle planes uniformly distributed on the outer conical surface of the working section of the stirring pin mainly play roles in cutting metal and pushing plastic metal to transfer in the welding process, and the forward-rotation grooves on the outer conical surface of the stirring pin mainly enable the plastic metal to transfer downwards from the upper end of the joint, so that the defects of hole formation, looseness and the like are avoided. The involute spiral groove on the front end face of the stirring pin plays a role in gathering metal at the root of the welding line, ensures the penetration of the root and avoids defects. The radiating groove of the excircle face of the stirring head main body improves the radiating capacity of the device in the welding process, and the service life and the service strength of the device are also improved to a certain extent. Meanwhile, the stirring pin of the device can be selected to have different lengths and can be replaced at any time, so that the use cost is reduced, and the application range and the universality of the series of stirring welding devices are expanded.
The utility model has the advantages that:
the utility model provides a perpendicular zero angle friction stir welding device adopts the structural design of water conservancy diversion slot at special parts such as shaft shoulder, stirring pin, can perpendicular zero angle installation during the welding, need not adjusting device back dip angle, does not have hardware requirements such as main shaft slope, transmission and C axle follow-up to welding equipment, can realize low-cost, the high quality welding of in-plane welding seam. The utility model discloses still can realize the friction stir welding of welding material in the thickness 3mm-6mm through the design of changing different length stirring needles, realize friction stir welding easily wearing and tearing quick, the low-cost change of subassembly.
Drawings
Fig. 1 is the whole structure schematic diagram of the vertical zero-angle friction stir welding device.
Fig. 2 is a front view of the stirring pin of the present invention.
Fig. 3 is a side view of the stirring pin of the present invention.
Fig. 4 is a front view of the main body of the stirring head of the present invention.
Fig. 5 is a side view of the main body of the stirring head of the present invention.
The labels in the above figures are as follows:
1. stirring pin 2, stirring head main body 3, mounting hole 4, puller bolt 5, spiral groove
6. A positive rotation groove 7, an excircle plane 8, a side top plane 9 and a flow guide groove
10. Heat sink 11, fastening plane 12, front end face.
Detailed Description
Please refer to fig. 1 to 5:
the utility model provides a perpendicular zero angle friction stir welding device is including stirring needle 1 and stirring head main part 2, wherein stirring needle 1 is inserted and is established in the mounting hole 3 in the middle of 2 preceding terminal surfaces 12 of stirring head main part, is equipped with puller bolt 4 on the lateral wall of mounting hole 3 and is used for the fixed of stirring needle 1.
The middle part of the front end face of the stirring pin 1 is a plane, circular arc transition is formed between the outer edge of the plane and the conical surface of the front side face of the stirring pin 1, an involute spiral groove 5 is machined in the front end face of the stirring pin 1, the thread pitch of the spiral groove 5 is 1mm, the cross section of the spiral groove 5 is in a semicircular shape with the radius of 0.25mm, and the spiral groove 5 is distributed clockwise from inside to outside.
The front part of the stirring pin 1 is a working section, the working section of the stirring pin 1 is conical, the diameter of the bottom of the working section is 7mm, the diameter of the end part of the working section is 5mm, the outer conical surface of the working section is provided with a forward rotation groove 6, the distance between the forward rotation grooves 6 is 1mm, the forward rotation grooves are V-shaped, the depth of the forward rotation grooves 6 is 0.6mm, three symmetrical groups of excircle planes 7 with 120 degrees are further processed on the outer conical surface of the working section of the stirring pin 1, the depth of each excircle plane 7 is 0.7mm, the angle of each excircle plane 7 is the same as that of the conical surface of the stirring pin 1, the length of the working section of the stirring pin 1 is 3-6mm according to the determined range of the plate thickness, and the stirring pin 1 with the length of 3-6mm can meet the condition that the same stirring pin main body 2 is matched with the stirring pins 1 with different lengths, so that materials with different plate thicknesses can be welded.
The rear portion of stirring needle 1 is the canned paragraph, and stirring needle 1 canned paragraph is diameter 7 mm's cylinder, and the side processing of canned paragraph has side top plane 8, adopts M6 puller bolt to pass through side top plane 8 and makes stirring needle 1 and stirring head main part 2 be connected the fastening and can synchronous revolution.
The front end face 12 of the stirring head main body 2 is an inwards concave conical surface, the inwards concave angle of the conical surface is 5 degrees, the outer edge of the front end face 12 is a chamfer of 1mm multiplied by 45 degrees, the front end face 12 is also provided with an involute diversion groove 9, the cross section of the diversion groove 9 is a semicircle with the radius of 0.5mm, and the thread pitch of the diversion groove 9 is 1.8mm.
The front portion that stirring head main part 2 and stirring pin 1 linked firmly mutually is provided with the heat dissipation section, and the diameter of heat dissipation section is 28mm, and radiating groove 10 has been seted up to the outer disc of heat dissipation section, and radiating groove 10 is the trapezoidal slot of four group's equidistance distributions, and trapezoidal slot degree of depth is 0.8mm, trapezoidal slot upper portion width 2.12mm, trapezoidal slot lower part width 1.2mm, the interval 4mm of adjacent trapezoidal slot.
The rear portion of the stirring head main body 2 is a clamping section, the diameter of the clamping section is 20mm, the clamping section is provided with a fastening plane 11, and the stirring head main body 2 can be installed on a tool shank of common friction stir welding equipment through the fastening plane 11.
The utility model discloses a theory of operation:
the utility model provides a perpendicular zero angle friction stir welding device will be with reference to by welding the thick suitable stirring pin 1 of selecting of board when using to fix stirring pin 1 on stirring head main part 2. The stirring head main body 2 is fixed on a 20mm universal side-jacking type knife handle of friction stir welding equipment or special machining equipment and is jacked tightly through a fastening plane 11 by adopting bolts. During welding, the friction stir welding device rotates anticlockwise at high speed, and generates stirring and friction effects with welding materials through the front end face 12 and the stirring pin 1, the generated friction heat and plastic deformation heat enable welding base materials to reach a high-temperature plasticizing state, and plastic metal moves from outside to inside under the extrusion and driving of the front end face 12 of the stirring head main body 2 and the flow guide groove 9, so that the overflow of metal in a welding nucleus area is avoided. Meanwhile, the concave conical surface design of the shaft shoulder of the stirring head main body 2 also plays a role in containing plastic metal, promoting the mixing of the plastic metal and avoiding the overflow of the metal. In the welding process, the design of a large chamfer of 1mm multiplied by 45 degrees at the outer edge of the front end surface 12 is beneficial to the high-speed advance and direction change of a welding device on the surface of base metal. The excircle planes 7 uniformly distributed on the outer conical surface of the working section of the stirring pin 1 mainly play roles in cutting metal and pushing plastic metal to transfer in the welding process, and the forward-rotation grooves 6 on the outer conical surface of the stirring pin 1 mainly promote the plastic metal to transfer downwards from the upper end of the joint, so that the defects of hole formation, looseness and the like are avoided. The involute spiral groove 5 on the front end face of the stirring pin 1 plays a role in gathering metal at the root of a welding seam, ensures the penetration of the root and avoids defects. The heat dissipation groove 10 on the outer circular surface of the stirring head main body 2 improves the heat dissipation capacity of the device in the welding process, and also improves the service life and the use strength of the device to a certain extent. Meanwhile, the stirring pin 1 of the stirring device can be selected to have different lengths and can be replaced at any time, so that the use cost is reduced, and the application range and the universality of the stirring welding device series are expanded.
Claims (7)
1. The utility model provides a perpendicular zero angle friction stir welding device which characterized in that: the stirring pin fixing device comprises a stirring pin and a stirring head main body, wherein the stirring pin is inserted into a mounting hole in the middle of the front end face of the stirring head main body, and a puller bolt is assembled on the side wall of the mounting hole and used for fixing the stirring pin.
2. A vertical zero angle friction stir welding apparatus as defined in claim 1 wherein: the middle part of the front end face of the stirring pin is a plane, circular arc transition is formed between the outer edge of the plane and the conical surface of the front side face of the stirring pin, an involute spiral groove is machined in the front end face of the stirring pin, the pitch of the spiral groove is 1mm, the cross section of the spiral groove is semicircular with the radius of 0.25mm, and the spiral groove is clockwise distributed from inside to outside.
3. A vertical zero angle friction stir welding apparatus as defined in claim 1 wherein: the front part of the stirring pin is a working section, the working section of the stirring pin is conical, the diameter of the bottom of the working section is 7mm, the diameter of the end part of the working section is 5mm, the outer conical surface of the working section is provided with positive rotation grooves, the distance between the positive rotation grooves is 1mm, the positive rotation grooves are V-shaped, the depth of the positive rotation grooves is 0.6mm, three groups of 120-degree symmetrical excircle planes are further processed on the outer conical surface of the stirring pin working section, the depth of each excircle plane is 0.7mm, the angle of each excircle plane is the same as that of the conical surface of the stirring pin, the length of the stirring pin working section is 3-6mm according to the plate thickness, the stirring pin with the length of 3-6mm can meet the requirement that the same stirring head main body is matched with stirring pins with different lengths, and therefore welding of materials with different plate thicknesses can be completed.
4. A vertical zero angle friction stir welding apparatus as defined in claim 1 wherein: the rear portion of stirring pin be the canned paragraph, the canned paragraph is diameter 7 mm's cylinder, the side processing of canned paragraph has the side top plane, adopts M6 puller bolt to pass through the side top plane and make the stirring pin be connected the fastening and can synchronous revolution with the stirring head main part.
5. A vertical zero angle friction stir welding apparatus as defined in claim 1 wherein: the front end face of the stirring head main body is an inwards concave conical face, the inwards concave angle of the conical face is 5 degrees, the outer edge of the front end face is a chamfer of 1mm multiplied by 45 degrees, an involute flow guide groove is further arranged on the front end face, the section of the flow guide groove is a semicircle with the radius of 0.5mm, and the screw pitch of the flow guide groove is 1.8mm.
6. A vertical zero angle friction stir welding apparatus as defined in claim 1 wherein: stirring head main part and the front portion that the stirring pin linked firmly mutually be the heat dissipation section, the diameter of heat dissipation section is 28mm, the radiating groove has been seted up to the outer disc of heat dissipation section, the radiating groove is the trapezoidal slot of four group's equidistance distributions, trapezoidal slot degree of depth is 0.8mm, trapezoidal slot upper portion width 2.12mm, trapezoidal slot lower part width 1.2mm, the interval 4mm of adjacent trapezoidal slot.
7. A vertical zero angle friction stir welding apparatus as defined in claim 1 wherein: the rear portion of the stirring head main body is a clamping section, the diameter of the clamping section is 20mm, the clamping section is provided with a fastening plane, and the stirring head main body can be installed on a tool shank of common friction stir welding equipment through the fastening plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223224580.1U CN218612232U (en) | 2022-12-02 | 2022-12-02 | Vertical zero-angle friction stir welding device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223224580.1U CN218612232U (en) | 2022-12-02 | 2022-12-02 | Vertical zero-angle friction stir welding device |
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| CN218612232U true CN218612232U (en) | 2023-03-14 |
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| CN202223224580.1U Active CN218612232U (en) | 2022-12-02 | 2022-12-02 | Vertical zero-angle friction stir welding device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116140789A (en) * | 2023-04-23 | 2023-05-23 | 成都航空职业技术学院 | Backfill type friction stir spot welding equipment and welding method |
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2022
- 2022-12-02 CN CN202223224580.1U patent/CN218612232U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116140789A (en) * | 2023-04-23 | 2023-05-23 | 成都航空职业技术学院 | Backfill type friction stir spot welding equipment and welding method |
| CN116140789B (en) * | 2023-04-23 | 2023-06-20 | 成都航空职业技术学院 | Backfill type friction stir spot welding equipment and welding method |
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