JP4312735B2 - Ferrule for stud welding, stud and stud welding method - Google Patents

Description

  The present invention relates to a novel stud welding ferrule and stud used when stud welding a plate-like member on a base material, and a stud welding method.

  In general, as a method for welding the plate-shaped member onto the base material, a portion where the side edge portion of the plate-shaped member abuts on the surface of the base material in a state where the plate-shaped member is installed on the base material is used. A method of welding by arc welding such as covered arc welding or gas shielded arc welding, or a method of welding by spot welding with a base material and a plate-shaped member sandwiched between a pair of electrode tips is widely known.

However, when the plate-like member is welded onto the base metal by the former arc welding, the welded portion must be welded by arc welding over the entire circumference of the portion where the plate-like member and the base material abut. of because the long length there is only a rather time and effort and will and not cormorant problem in very hanging is troublesome, also in case the place where doing welding work is a bad place scaffolds such as construction site However, since the worker must perform the welding work while paying attention to the scaffolding and other work, the work efficiency is deteriorated and the quality of the welding work is deteriorated. .

  In addition, when the plate member is welded to the base material by the latter spot welding, the base material and the plate member must be sandwiched between a pair of electrode tips, so an electrode tip is installed on the back side of the base material. If there is no room for welding, or if the base material or plate-like member to be welded is thick and unsuitable for spot welding, the plate-like member cannot be welded onto the base material by spot welding. There was a drawback.

  Therefore, compared to arc welding and spot welding, welding can be performed relatively easily in a short time, and the stud gun used for the welding itself is lightweight and has a poor footing such as a construction site. It has the characteristics that it can be used in a variety of situations. Conventionally, a plate-like member is used as a base material by using stud welding, which is often used to weld a cylindrical or screw-like stud on a base material. A method of welding on the material is also conceivable.

However, when welding a plate-shaped member on a base material using such stud welding, the stud is positioned on the surface of the plate-shaped member on the base material, but stud welding is performed. in this case the must all melted sites to the surface of the back side and the base material immediately below the site from the surface side of the site of the plate-like member studs are welded merely stud stud on the base material Since stud welding is performed with a large current using a relatively large diameter stud compared to normal stud welding to be welded, not only large electrical equipment is required, but also mobility of stud welding. And the features such as simplicity are impaired, and the thicker the plate-like member to be welded onto the base material, the larger the current is required. Suitable for welding on the base metal There has been a drawback.

Therefore, as a method for welding a plate-like member on a base material using stud welding even if it is a thick plate without requiring a large current, for example, a plate-like member such as a steel plate, plastic, wood, etc. When overlapping and joining, a rivet hole is provided in the overlapping portion of the plate-like member, and the shaft portion of the rivet is inserted into the rivet hole, and the insertion end surface of the rivet is brought into contact with the overlapping portion of the base material. A method of stud welding to a base material (for example, refer to Patent Document 1), or a hole in a plate-like member, and a base material on one side of the plate-like member and a plate-like contact on the other side across the hole portion. Gold is placed on top of each other, the tip of the stud that is detachably held by the arc stud welding machine is brought into contact with the surface of the plating, and then the arc stud welding machine is activated to automatically discharge between the tip of the stud and the plating. To do Thus, a method (for example, refer to Patent Document 2) or the like is proposed in which the tip of the stud and the contact portion contacting the same are melted and the edge of the hole of the plate-like member and the base material are fixed by welding. .

  However, in the former method, rivet holes must be provided in advance in the overlapping portion of the plate-like members. However, if the plate-like member has a long length, a large number of rivet holes must be provided. When a bent part or other member is attached to a plate-like member, it is necessary to select a part other than that part and to provide a rivet hole. Since the member and the base material are not melted and firmly bonded to each other, but the plate-like member is only locked through a rivet welded to the base material, the connection state is directly It has the disadvantage of being fragile compared to the welded one, and the plate-like member can be easily detached from the base metal if the rivet head or rivet hole is deformed by external force. There was also.

  On the other hand, in the latter method, the plate-shaped member, the base material, the stopper, and the tip of the stud are melted and firmly bonded to each other. However, as in the former method, a hole must be previously formed in the plate-shaped member. In addition, stud welding must be performed with the base material on one side of the plate-like member and the plate-shaped metal plate on the other side, with the hole portion sandwiched between them. Not only that, but stud welding must be performed in a state where the hole of the plate-shaped member is blocked by the metal pad, so the stud welding must be performed in a state where the exact position of the hole of the plate-shaped member cannot be grasped. Therefore, there is a drawback that the workability is poor, and further, the structure is such that the periphery of the hole of the plate-like member, the base material and the tip of the stud are melted and stud-welded after the metal base is melted by an arc. Therefore, according to various conditions such as the material and thickness of the backing metal and the size and length of the hole of the plate-like member, it is necessary to manage and adjust the current application time and voltage etc. to generate the arc, There was also a drawback that its management and adjustment was very difficult.

  Furthermore, in any method, stud welding is performed in a state in which holes or the like are provided in advance in the plate-like member. Therefore, even if it is noticed that the strength of the joint is insufficient after welding even at one place, There is a drawback that it is very difficult to increase the number of welding points, and furthermore, since each of the holes of the plate-like member is stud welded, the peripheral edge of the plate-like member is floated by an external force, so that the plate shape There is also a drawback that there is a risk that the joint strength of the entire member is significantly reduced.

JP-A-6-126464 JP-A-8-332573

  The present invention uses the novel stud welding ferrule and stud which can easily perform stud welding of a plate-like member on a base material in a good state, and the stud welding ferrule. It is an object to provide a stud welding method.

  As a result of diligent research to solve the above problems, the present inventors melted the surface of the base material, the side surface of the plate-like member and the surface, and the lower side of the stud when the plate-like member is stud welded onto the base material. If an appropriate margin is formed from the surface of the plate-shaped member to the surface of the base material, the side edges of the plate-shaped member can be formed without applying special processing to the base material or the plate-shaped member itself. It was noted that the part can be stud welded directly to the base material.

  Therefore, as a result of further research, the present inventors have found that the bottom surface of the extra weld forming portion of the ferrule for stud welding used when stud welding the plate-like member on the base material is the surface of the base material and the plate-like member, respectively. If it is formed in such a shape that it can come into contact with the side surface of the plate member and the surface of the plate-like member, the surface of the base material, the side surface of the plate-like member and the surface and the lower side of the stud are melted and from the surface of the plate-like member, Since a moderate surplus can be formed over the surface of the material, the side edges of the plate-like member can be easily and satisfactorily formed on the base material without special processing of the base material or the plate-like member itself. It was determined that stud welding can be performed in this state.

  Then, in order to stud weld the side edge of the plate-like member on the base material in a better state using such a stud welding ferrule, a plate-like shape is provided in the vicinity of the flux portion provided to project at the lower end thereof The present invention has been completed by investigating that it is preferable to use a stud in which a notch having a shape conforming to a predetermined side surface of the side edge of the member is used.

That is, according to one aspect of the present invention, a space communicating with the stud insertion hole and opened below the stud introduction hole having the stud insertion hole and having a cross-sectional area larger than the cross-sectional area of the stud insertion hole is provided. It is a ferrule for stud welding in which the surplus forming part to be formed is integrally formed,
The bottom surface of the surplus forming portion is a bottom surface contact portion that is substantially perpendicular to the insertion direction of the stud insertion hole, and a pair that rises substantially parallel to the insertion direction of the stud insertion hole from the end of the bottom surface contact portion A stud that is formed by a side abutting portion and an intermediate abutting portion that connects upper end edges of the side abutting portions and is substantially perpendicular to the insertion direction of the stud insertion hole. It is a ferrule for welding.

  And, in the stud welding ferrule according to the present invention, if a venting groove for communicating the space in the surplus formation portion with the outside is provided at the lowermost surface contact portion of the surplus formation portion, the stud It is preferable that the gas generated when the etc. is melted can be discharged outward from the surplus formation part, and each extension plane of the contact part on both sides of the surplus formation part corresponds to the insertion direction of the stud insertion hole. On two planes that are substantially parallel and located on one plane passing through the stud insertion hole, or substantially parallel to the insertion direction of the stud insertion hole and intersecting at substantially right angles passing through the stud insertion hole. If they are respectively positioned, it is possible to correspond to the side edge of the plate-like member forming a straight line and the side edge of the corner of the plate-like member forming a right angle. Hole cross-sectional shape and If the cross-sectional shape of the space above the intermediate contact part of the surplus forming part is formed so as to form a substantially circular shape, it corresponds to the stud that is most frequently used in the cross-sectional shape. It was also found that it is preferable because it can be done.

Another aspect of the present invention is a rising surface that rises substantially parallel to the stud insertion direction from the vicinity of the flux portion that projects from the lower end, and a stud insertion direction that extends from the upper edge of the rising surface to the side surface. The stud is characterized in that a notch formed of a substantially vertical horizontal plane is formed.

In the stud according to the present invention, the rising surface of the notch is formed of one plane substantially parallel to the stud insertion direction or two planes substantially parallel to the stud insertion direction and orthogonal to each other. If it is a thing, it can respond | correspond favorably to the side edge parts, such as a linear part and a corner | angular part of a plate-shaped member, and it is a middle part of the insertion direction of a stud, and is a part above a notch part. A fracture portion having a small cross-sectional area is formed, or in a mode having such a fracture portion, a grip portion having a non-circular cross-sectional shape is formed at a portion above the fracture portion, or further cut. If the cross-sectional shape of the most part above the notch part is formed so as to form a substantially circular shape, or if a male screw is formed at least on the side face of the part above the notch part, the screw according to the present invention will be described. A plate-like member with a head is was also investigated preferable to be able to accommodate different use form after providing stud welded onto the base material.

  Further, according to another aspect of the present invention, a stud introduction hole having a stud insertion hole is communicated with the stud insertion hole and opened below, and the sectional area of the stud insertion hole is larger than that of the stud insertion hole. A surplus forming portion that forms a space is integrally formed, and a lower surface of the surplus forming portion is formed between a lowermost surface contact portion that is substantially perpendicular to an insertion direction of the stud insertion hole, and a lowermost surface contact portion. A pair of side contact portions that rise substantially parallel to the insertion direction of the stud insertion hole from the end portion, and upper end edges of both side contact portions are connected to each other and substantially perpendicular to the insertion direction of the stud insertion hole. The stud welding ferrule and the stud welding hole are inserted in the stud insertion hole of the stud welding ferrule formed by the intermediate contact portion, and the stud formed with a flux portion protruding from the lower end is inserted. Stud stud The stud welding ferrule is placed on the predetermined side of the plate-like member to be welded on the base metal and the lowermost contact part on the surface of the base metal. The stud gun is moved so that the abutting parts abut each on the surface of the plate-like member, and then an arc is generated by the stud gun, thereby forming a surplus in the surplus formation portion of the stud welding ferrule. The stud welding method is characterized in that the side edge of the plate-like member is welded onto the base material.

  Further, in the stud welding method according to the present invention, as a ferrule for stud welding, a gas vent groove for communicating the space in the surplus formation portion with the outside is provided at the lowermost surface contact portion of the surplus formation portion. It has also been found that the use of the stud welding ferrule is preferable because the gas generated when the stud or the like is melted can be discharged outward from the surplus forming portion as described above.

  Further, in the stud welding method according to the present invention, as a stud, a rising surface that rises from the vicinity of the flux portion substantially parallel to the stud insertion direction and a horizontal plane that is substantially perpendicular to the stud insertion direction from the upper end edge of the rising surface to the side surface. Using a stud formed with a notch made of, and before the arc is generated by the stud gun, the rising surface of this stud is made to face a predetermined side of the plate-like member on the base material, In the stud welding method of such an aspect, a stud whose notch portion has a single flat surface as a stud is used as a stud, and each extension flat surface at both side contact portions of a surplus forming portion is a stud as a stud welding ferrule. Slots that are substantially parallel to the insertion direction of the insertion hole and located on a plane passing through the stud insertion hole. The plate-like member is welded onto the base material at the side edge that forms the straight shape of the plate-like member, or the rising surface of the notch as a stud is substantially the same as the stud insertion direction. A stud comprising two parallel planes that are parallel and orthogonal to each other is used, and each extension plane of the contact portion on both sides of the surplus forming portion as a stud welding ferrule is substantially parallel to the insertion direction of the stud insertion hole, and this stud Using stud welding ferrules located on two planes intersecting at substantially right angles that pass through the insertion hole, this plate member is welded to the base material at the side edges of the corners forming the right angle of the plate member. In other words, the inventors have also found out that it is preferable that stud welding can be performed in a favorable state by variously shaped portions in the side edge portion of the plate-like member.

Furthermore, in the stud welding method according to the present invention, a stud in which a broken portion having a small cross-sectional area is formed at a position located above the stud introduction portion of the stud welding ferrule is used as a stud, or as a stud. In an embodiment having such a rupture portion, a stud having a non-circular cross-sectional shape is formed in a portion above the rupture portion, or a stud insertion hole of a stud introduction portion as a stud welding ferrule And the stud welding ferrule formed so that the cross-sectional shape of the space above the intermediate contact portion of the extra-strip forming portion is substantially circular, and the stud welding ferrule is used as a stud. formed to substantially form a circle-like cross-sectional shape of the site of most of the above the site that melt weld reinforcement formed portion Or using products which studs are, if or use stud male screw from the side surface of the upper portion part which melts at weld reinforcement forming portion of at least the stud welding ferrule is formed as a stud, the plate-like member It has also been found that it is possible to cope with various usage forms after the side edge portion is stud welded on the base material.

  Since the stud welding ferrule according to the present invention and the stud welding method using the stud welding ferrule are configured as described above, the surface of the base material and the plate-like member are formed in the surplus formation portion of the stud welding ferrule. Since the side surface and the surface and the lower side of the stud can be melted and an appropriate margin can be formed from the surface of the plate member to the surface of the base material, the side edge portion of the plate member Not only can be firmly welded to the base metal in a good condition, but can also be stud welded, and the side edge of the plate-like member is directly stud welded to the base material. There is no need to perform any processing on the shaped member itself, and the number of welding points can be easily increased after the construction once stud-welded.

  And, the stud welding method according to the present invention uses the stud welding ferrule according to the present invention instead of the stud welding ferrule having a general shape, and the stud welding ferrule is a plate-like shape to be welded to the base material. Normally, except that both side contact parts are located on a predetermined side surface of the member, the bottom surface contact part is located on the surface of the base material, and the intermediate contact part is in contact with the surface of the plate member. Therefore, the operator can easily carry out a general stud welding work procedure without acquiring new techniques, and can perform the stud welding according to the present invention. Since the ferrule is only different from the bottom surface of a general stud welding ferrule, the shape of the bottom surface of the surplus forming portion is particularly processed if it is a general stud gun. Since it is possible to attach the ferrule for stud welding according to the present invention, it is not necessary to prepare a new special stud gun or modify an existing stud gun, and the introduction cost is not required at all. It is.

  Further, in the stud welding method according to the present invention, an arc is generated as a stud by a stud gun, and a surplus can be formed in a surplus formation part of a ferrule for stud welding and welded onto a base material. A general stud (hereinafter sometimes referred to as “general stud”) in which a protruding flux portion is formed can be used, and even when such a general stud is used. Although the various effects as described above can be achieved, if the stud according to the present invention having the above-described configuration is used instead of such a general stud, the stud is provided protruding from the lower end of the stud according to the present invention. The notch formed in the vicinity of the formed flux portion has a shape conforming to a predetermined side surface of the side edge of the plate-like member. Since the predetermined side surface and the surface of the part can be efficiently melted, the side edge of the plate-like member can be stud-welded on the base material in a better state than a general stud, In particular, when the plate-like member is made of a thick plate, the strength and stability of the welding can be increased, which is effective.

  Further, in the stud welding ferrule according to the present invention and the stud welding method using the stud welding ferrule, the gas venting which communicates the space in the surplus formation portion and the outside to the lowermost surface contact portion of the surplus formation portion. If the groove is provided, the gas generated when the stud or the like is melted can be discharged outward from the surplus formation portion, which is preferable, and surplus is formed at the surplus formation portion. At this time, it is preferable that excess molten metal can be discharged to form a uniform and good surplus.

  Furthermore, in the stud welding method according to the present invention, as a stud, a rising surface that rises from the vicinity of the flux portion substantially parallel to the stud insertion direction, and a horizontal plane that is substantially perpendicular to the stud insertion direction from the upper edge of the rising surface to the side surface. Using a stud according to the present invention in which a notch portion is formed, and a state in which the rising surface of this stud is opposed to a predetermined side surface of a plate-like member on a base material before generating an arc by a stud gun Then, as described above, the side edge portion of the plate-like member can be stud-welded on the base material in a better state as compared with a general stud, and particularly the plate-like member is made of a thick plate. In some cases, the strength and stability of the weld can be increased, which is advantageous because it is effective.

  Furthermore, in the ferrule for stud welding according to the present invention, the extension planes of the contact portions on both sides of the surplus forming portion are substantially parallel to the insertion direction of the stud insertion hole and on one plane passing through the stud insertion hole. If they are positioned, when the plate-shaped member is stud-welded on the base material at the side edge that forms the straight shape of the plate-shaped member, the abutting portions on both sides are applied to the predetermined side surface of the plate-shaped member without a gap. It is preferable that the extension planes of the abutting portions on both sides of the surplus forming portion are substantially parallel to the insertion direction of the stud insertion hole and intersect with each other at a substantially right angle passing through the stud insertion hole. If the plate-like member is stud-welded on the base material at the side edge of the right-angled corner of the plate-like member, the abutting portions on both sides are set at predetermined positions of the plate-like member. Good because it can be contacted to the side without any gaps. Is Shiino.

  And, when stud welding is performed using the ferrule for stud welding according to the present invention of such an aspect, a side edge portion or a plate-like member that forms a straight shape of a plate-like member using a general stud as a stud is used. Although the plate-like member can be stud welded on the base material at the side edges of the corners forming a right angle, the stud according to the present invention is used instead of such a general stud, and the notch If the rising surface of the plate is formed by a plane substantially parallel to the stud insertion direction, the plate-like member is stud-welded on the base material at the side edge portion that forms a straight line, and the notch If the rising surface of the part consists of two planes that are substantially parallel to and perpendicular to the stud insertion direction, the plate member is stud welded to the base metal at the side edge of the corner that forms the right angle of the plate member. When doing that, it's common It is preferable that the side edge portion of the plate-like member can be stud-welded on the base material in a better state as compared with the tad, and particularly when the plate-like member is made of a thick plate, the welding of the plate-like member is preferable. Since strength and stability can be increased, it is preferable because it is effective.

Furthermore, the stud welding method using a stud or common stud according to the stud welding ferrule and the present invention according to the present invention, a portion located above Ri by stud introduction of the stud welding ferrule as studs, i.e. the present invention preform lever to use studs a breaking portion having a small cross-sectional area is formed in the upper portion than a middle portion with notched portion in the insertion direction of the stud in the stud, the side edges of the plate-like member according to the If the only purpose is to weld on the top, after the stud is welded, the portion above the fractured portion of the stud is struck with a hammer or the like to break the fractured portion and above the fractured portion of the stud. In the stud of the aspect in which such a rupture portion is formed, the portion above the rupture portion is preferable. If the only purpose is to weld the side edge of the plate-like member onto the base material, the stud is welded after stud welding. Since it is possible to remove the portion above the broken portion of the stud by breaking the broken portion by rotating the portion above the broken portion so as to be screwed with a wrench or spanner, the stud is also preferable. The side edge of the plate-like member after the stud welding is performed by confirming that only the broken portion of the stud is broken by the torque when the portion above the broken portion is rotated with a wrench, spanner, etc. preferred because it is welded in a proper strength on the base material can be determined easily whether further be fused with weld reinforcement forming portion of at least the stud welding ferrule as studs If male threads are formed on the side surface of the part above the part, that is, at least the side part above the notch in the stud according to the present invention, the plate member is welded on the surface of the base material and then the stud is attached. It is preferable that other members can be separately attached using nuts or the like.

Further, in the stud welding ferrule according to the present invention and the stud according to the present invention and the stud welding method, as a stud welding ferrule , the cross-sectional shape of the stud insertion hole of the stud introduction portion and the intermediate contact portion of the surplus formation portion site or using a stud welding ferrules that are formed as the sectional shape of the space formed substantially a circle shape, respectively, of the majority of the above the site that melt weld reinforcement forming portion of the stud welding ferrule as studs In other words, the most frequently used cross-sectional shape of the stud according to the present invention is substantially positive if the cross-sectional shape of the most part above the notch is formed in a substantially circular shape. It is not only preferable because it can handle ferrules and studs for circular stud welding, but it is also the most frequently used part. Since the ferrule for stud welding according to the present invention and the stud according to the present invention can be obtained by simply performing a simple process on a general ferrule for stud welding and a stud having a substantially circular shape, the manufacturing costs thereof are as follows. This is preferable.

The stud welding ferrule, stud and stud welding method according to the present invention will be described below in detail with reference to the drawings.
1 is a perspective explanatory view showing an embodiment of a ferrule for stud welding according to the present invention, FIG. 2 is a bottom explanatory view of FIG. 1, FIG. 3 is a cross-sectional explanatory view taken along line AA of FIG. FIG. 5 is a bottom explanatory view of FIG. 4, FIG. 6 is a sectional view taken along line BB of FIG. 5, and FIG. 7 is a stud according to the present invention. FIG. 8 is a bottom explanatory view of FIG. 7, FIG. 9 is a sectional view taken along the line CC of FIG. 8, and FIG. 10 is an embodiment of a stud according to the present invention. FIG. 11 is a bottom explanatory view of FIG. 10, FIG. 12 is a sectional view taken along the line DD of FIG. 11, and FIG. 13 is a perspective explanatory view showing another embodiment of the stud according to the present invention. 14 is a bottom view of FIG. 13, FIG. 15 is a cross-sectional view taken along line E-E of FIG. 14, and FIG. 16 is still another stud according to the present invention. FIG. 17 is a bottom explanatory view of FIG. 16, FIG. 18 is a cross-sectional explanatory view taken along the line FF of FIG. 17, and FIG. 19 is an abutment of a stud welding ferrule in the stud welding method according to the present invention. FIG. 20 is a cross-sectional explanatory view schematically showing an example of a state before the stud is melted in the surplus forming portion of the ferrule for stud welding in the stud welding method according to the present invention, FIG. 21 is a cross-sectional explanatory view schematically showing another example of the state before the stud is melted in the surplus formation portion of the stud welding ferrule in the stud welding method according to the present invention, and FIG. 22 is the stud welding according to the present invention. FIG. 23 is a cross-sectional explanatory view schematically showing an example of a state after the stud is melted in the surplus formation portion of the ferrule for stud welding in the method, and FIG. FIG. 24 is a cross-sectional explanatory view schematically showing an example of a state after removing the stud welding ferrule and breaking the stud gripping portion, and FIG. 24 shows one of the studs used in the stud welding method according to the present invention. FIG. 25 is a perspective explanatory view showing another example of a stud used in the stud welding method according to the present invention.

  In the drawings, reference numeral 1 denotes a space below the stud introduction portion 1a having the stud insertion hole 1aa, which is communicated with the stud insertion hole 1aa and opened below, and has a larger cross-sectional area than the stud insertion hole 1aa. This is a stud welding ferrule in which the formed surplus forming portion 1b is integrally formed, and the lower surface of the surplus forming portion 1b of the stud welding ferrule 1 is the lowermost surface substantially perpendicular to the insertion direction of the stud insertion hole 1aa. Abutting part 1ba, a pair of side abutting parts 1bb and 1bb rising from the end of bottom surface abutting part 1ba substantially parallel to the insertion direction of stud insertion hole 1aa, and upper ends of both side abutting parts 1bb and 1bb It is formed by an intermediate contact portion 1bc that connects the edges and is substantially perpendicular to the insertion direction of the stud insertion hole 1aa, and has an appropriate margin from the surface of the plate member P to the surface of the base material B. By forming the side edges of the plate-like member P, the base material B Serve to stud welding to.

  The stud welding ferrule 1 includes a stud introduction portion 1a in which a stud insertion hole 1aa into which a stud 2 described later is inserted, a surface of the base material B, a side surface and a surface of the plate member P, and a stud 2 described later. When the lower side is melted, the flow of air in the vicinity of the surplus formation portion 1b is blocked to prevent the melted metal from being oxidized by touching the outside air and to prevent the plate-like member P from being oxidized. 1 to FIG. 1 as the shape of the stud welding ferrule 1, which forms a space for forming an appropriate margin from the surface of the base material B to the surface of the base material B. As shown in FIG. 3, even if the outer circumference of the stud introduction part 1a extends from the stud formation part 1b to form a cylindrical shape, the extraordinary part from the stud introduction part 1a as shown in FIGS. The outer periphery of the forming part 1b is substantially the same. Even if it has a cylindrical shape, it may further have a hollow prismatic shape whose outer periphery is enlarged from the stud introducing portion 1a to the extra-strip forming portion 1b as shown in FIGS. In order to secure a space for forming an appropriate surplus, at least the surplus formation portion 1b communicates with the stud insertion hole 1aa and is open at the bottom, and the cross-sectional area is larger than the cross-sectional area of the stud insertion hole 1aa It is necessary to form such a shape as to form.

  Further, as shown in FIGS. 7 to 9, the stud welding ferrule 1 has a cross-sectional shape of the stud insertion hole 1aa of the stud introducing portion 1a and a space above the intermediate contact portion 1bc of the surplus forming portion 1b. Although the cross-sectional shapes are each formed in a rectangular shape, or although not shown, these cross-sectional shapes may be formed in an elliptical shape, the studs are introduced as shown in FIGS. If the cross-sectional shape of the stud insertion hole 1aa of the portion 1a and the cross-sectional shape of the space above the intermediate contact portion 1bc of the extra-strip forming portion 1b are formed so as to form a substantially circular shape, it is most frequently used. This is preferable because the cross-sectional shape can correspond to the stud 2 having a substantially circular shape, and it is not only preferable, but a simple processing is applied to a general stud welding ferrule whose cross-sectional shape is most frequently used. Just Can be the stud welding ferrule 1 according to the present invention, it is Preferred to be able to suppress these manufacturing cost.

  As shown in FIGS. 1 to 9, the bottom surface of the stud forming ferrule 1 for the stud welding ferrule 1 has a lowermost surface contact portion 1ba substantially perpendicular to the insertion direction of the stud insertion hole 1aa and a lowermost surface contact portion 1ba. A pair of side contact parts 1bb and 1bb rising from the end substantially parallel to the insertion direction of the stud insertion hole 1aa and the upper edge of both side contact parts 1bb and 1bb are connected to each other and the insertion direction of the stud insertion hole 1aa When the side edge of the plate-like member P is stud welded to the base material B, the bottom surface of the surplus forming portion 1b of the stud welding ferrule 1 is formed. 20 and 21, the lowermost contact part 1ba is on the surface of the base material B, both side contact parts 1bb and 1bb are on the side surfaces of the plate member P, and the intermediate contact part 1bc is the plate member. The surface of the base material B and the plate-like portion are installed by being in contact with the surface of P and stud welding. The side surface and the surface of the material P and the lower side of the stud 2 can be melted, and an appropriate margin can be formed from the surface of the plate-like member P to the surface of the base material B.

  As the surplus forming portion 1b of the stud welding ferrule 1, the lowermost surface contact portion 1ba substantially perpendicular to the insertion direction of the stud insertion hole 1aa and the stud insertion hole 1aa are inserted from the end of the lowermost surface contact portion 1ba. Intermediate contact part 1bc that connects the pair of side contact parts 1bb, 1bb that rise substantially parallel to the direction and the upper edges of both side contact parts 1bb, 1bb and is substantially perpendicular to the insertion direction of the stud insertion hole 1aa However, in the case where the side edge portion of the plate-like member P is linearly welded to the base material B as shown in FIG. 19, for example, FIG. As shown in FIGS. 7 to 9, the extension planes of both side contact portions 1bb and 1bb of the surplus forming portion 1b of the stud welding ferrule 1 are substantially parallel to the insertion direction of the stud insertion hole 1aa and the stud insertion hole. If they are located on one plane passing through 1aa, the extra-strip forming portion 1b Since both side contact portions 1bb and 1bb can be contacted with the side surface of the side edge portion of the plate-like member P without any gap, it is preferable that a uniform and good surplus can be formed. When the side edges of the corners forming a right-angled shape of the shaped member P are stud welded to the base material B, as shown in FIG. 4 to FIG. If the extended planes of the parts 1bb and 1bb are substantially parallel to the insertion direction of the stud insertion hole 1aa and are located on two planes intersecting at substantially right angles passing through the stud insertion hole 1aa, extra formation is formed. Since both side contact portions 1bb and 1bb of the portion 1b can be brought into contact with the side surfaces of the side edges of the corners of the plate-like member P without any gaps, uniform and good surplus can be formed. This is preferable.

  Moreover, as the surplus formation part 1b of this ferrule 1 for stud welding, as shown in FIG. 20, although the lowermost surface contact part 1ba may just comprise the flat surface, it shows in FIGS. 1-9. If the venting groove 1c for communicating the space in the surplus formation part 1b with the outside is provided in the bottom surface contact part 1ba of the surplus formation part 1b of the ferrule 1 for stud welding as described above, the stud 2 etc. It is preferable that the gas generated when the metal is melted can be discharged outward from the surplus formation part 1b, as well as excess molten metal or spatter when surplus is formed in the surplus formation part 1b. Etc. are preferable because a uniform and good surplus can be formed.

  And as a material of this ferrule 1 for stud welding, ceramics are used suitably from viewpoints, such as heat resistance and electrical insulation.

  2 is a stud formed with a flux portion 2a projecting from the lower end, and is attached to the stud gun together with the stud welding ferrule 1 while being inserted into the stud insertion hole 1aa of the stud welding ferrule 1. When an arc is generated by the gun, the lower side of the base metal B and the surface and side surfaces of the plate-like member P in the surplus forming portion 1b of the stud welding ferrule 1, that is, the flux portion 2a and the flux portion 2a. As a result of melting of the peripheral portion of the steel plate, a surplus is formed in the surplus formation portion 1b of the ferrule 1 for stud welding and serves to weld the side edge of the plate-like member P onto the base material B.

  As this stud 2, an arc is generated by a stud gun to form a surplus in the surplus formation portion 1 b of the stud welding ferrule 1, and the plate-like member P can be welded onto the base material B. The stud welding method according to the present invention can be carried out even with a general stud in which the flux portion 2a protrudes from the lower end of a columnar portion having the same cross-sectional area, but from the vicinity of the flux portion 2a The stud according to the present invention is formed with a notch 2b formed of a rising surface 2ba that rises substantially parallel to the insertion direction, and a horizontal plane 2bb that is substantially perpendicular to the insertion direction of the stud from the upper end edge to the side surface of the rising surface 2ba. If used, the notch portion 2b formed in the vicinity of the flux portion 2a provided protruding from the lower end of the stud 2 according to the present invention conforms to a predetermined side surface of the side edge portion of the plate member P. Since it has a shape, the predetermined side surface and surface of the side edge of the plate-like member P can be efficiently melted, so that the plate-like member P is in a better state than the general stud 2. This is effective because the side edge of the steel plate can be stud-welded onto the base material B, and particularly when the plate-like member P is made of a thick plate, the strength and stability of the welding can be increased.

  As shown in FIGS. 10 to 18, the notch portion 2b of the stud 2 includes a rising surface 2ba that rises from the vicinity of the flux portion 2a substantially in parallel to the stud insertion direction, and a stud that extends from the upper edge of the rising surface 2ba to the side surface. 21. The rising surface 2ba of the notched portion 2b of the stud 2 is formed on a predetermined surface of the plate-like member P on the base material B before the arc is generated by the stud gun as shown in FIG. It is used in a state where it faces the side surface, that is, the rising surface 2ba of the stud 2 and a predetermined side surface of the plate-like member P abut or face each other with a slight gap.

When generating an arc by a stud gun in such a state, a flux portion 2a of the stud 2, the site of the periphery of the flux portion 2a, the portions of the periphery of the rising surface 2ba and horizontal 2bb of Switching Operation-outs 2b, respectively While being melted, the surface of the base material B and the surface and side surfaces of the plate-like member P are respectively melted. When a general stud 2 is used, the lower side of the stud 2 and the plate-like member Whereas the side edges of P have to be melted until their shape is largely broken, when such a stat 2 according to the present invention is used, the part to be melted of the stud 2 and the base material B and Since the part to be melted of the plate member P has an approximate shape, it is possible to perform stud welding in a good state by melting only a part close to the surface of those parts to some extent. Further, it is possible to reduce the time for supplying electric power to generate the arc and the amount of current to be supplied, and the efficiency is improved, and the molten stud 2 is pressed against the molten base material B and the plate-like member P side by a stat gun. Since the contact area of each part increases at this time, the stud 2 is more firmly coupled to the surface of the base material B and the side surface and the surface of the plate-like member P. The part can be stud welded onto the base material B.

  The notch portion 2b of the stud 2 includes a rising surface 2ba that rises substantially in the direction of the stud insertion from the vicinity of the flux portion 2a, and a horizontal surface that is substantially perpendicular to the stud insertion direction from the upper edge of the rising surface 2ba to the side surface. Although not particularly limited as long as it is composed of 2bb, for example, as shown in FIGS. 10 to 12 and FIGS. 16 to 18, the rising surface 2ba of the notch 2b is composed of a single plane substantially parallel to the stud insertion direction. If so, it is preferable when stud-welding the straight side edge of the plate-like member P to the base material B, and the rising surface 2ba of the notch 2b is preferably as shown in FIGS. If it is composed of two planes that are substantially parallel to the stud insertion direction and orthogonal to each other, it is suitable for stud welding the side edge portion of the rectangular portion of the plate-like member P to the base material B. preferable.

Then, the stud 2 in accordance with the general stud 2 and the present invention, shown in the stud 2 in FIGS. 13 to 18 according to the site, i.e., the present invention positioned above Ri by stud introduction portion 1 a of the stud welding ferrule 1 As shown in FIG. 24, in the intermediate portion in the stud insertion direction and above the notch 2b, and in the general stud 2, the fracture portion 2c having a small cross-sectional area is provided in the intermediate portion in the stud insertion direction. If it is formed, if the purpose is only to weld the side edge portion of the plate-like member P onto the base material B, the portion above the fracture portion 2c of the stud 2 after the stud welding is performed. It is preferable that the broken portion 2c can be broken by striking with a hammer or the like to remove the portion above the broken portion 2c of the stud 2, and a stack having such a broken portion 2c is preferably formed. 2, if a grip portion 2 d having a non-circular cross-sectional shape is formed at a position above the fracture portion 2 c as shown in FIG. 24, the side edge of the plate-like member P is placed on the base material B. When the purpose is only welding, after the stud welding is performed, as shown in FIG. 23, the grip portion 2d is rotated so as to be threaded with a wrench, a spanner or the like, thereby breaking the fracture portion 2c to break the stud 2 This is not only preferable because the portion above the fractured portion 2c can be removed, but when the gripping portion 2d is rotated with a wrench or spanner, only the fractured portion 2c of the stud 2 is broken by the torque. It is preferable because it is possible to easily determine whether or not the side edge portion of the plate-like member P is welded to the base material B with appropriate strength after stud welding is performed.

  This is because when the grip 2d is rotated with a wrench or spanner after stud welding, the side edges of the plate-like member P are welded to the base material B with appropriate strength by the stud 2. If not, the torque 2 applied to the grip portion 2d of the stud 2 will not break the fracture portion 2c formed as the most fragile part in the structure of the stud 2, and the stud 2 welded first will be broken. The lower side of the stud 2 may be peeled off from the base material B or the lower side of the stud 2 itself may be damaged. After stud welding is performed in this manner, the grip 2d of the stud 2 is rotated with a wrench or spanner. It is possible to determine whether or not welding is performed with an appropriate strength simply by confirming which part is destroyed at the time of welding.

  The stud 2 having such a configuration has a grip portion 2d having a non-circular cross-sectional shape at least at a position above the fracture portion 2c so that it can be easily rotated with a tool such as a wrench or spanner. However, as shown in FIG. 24, if the grip portion 2d has a hexagonal column shape, it can be rotated with a commercially available tool such as a torque wrench or a ratchet wrench. In addition, it is preferable because the strength determined by changing the cross-sectional area and shape of the fractured portion 2c can be changed.

Moreover, as the general stud 2 or the stud 2 according to the present invention, the cross-sectional shape of most of the part above the part to be melted in the surplus formation part 1b of the ferrule 1 for stud welding, that is, FIGS. As shown in FIG. 2, in the stud 2 according to the present invention, most of the cross-sectional shape above the notch 2b, in other words, when the notch 2b, the breakage 2c and the grip 2d are formed, these portions are excluded. or site of cross-sectional shape is formed so as to form a rectangular shape, not shown may be or have been formed so that this cross-sectional shape forms an elliptical or polygonal shape, the excess stud welding ferrule 1 In the stud 2 according to the present invention, the cross-sectional shape of the most part above the melted part in the embankment forming part 1b, that is, the most part of the cross-sectional shape above the notch part 2b as shown in FIGS. General stack 24, the cross-sectional shape of the most part in the insertion direction of the stud as shown in FIG. 24 is most often used if the cross-sectional shape is substantially a perfect circle. The stud 2 according to the present invention can be obtained by simply performing a simple process on the most frequently used general stud having a substantially circular cross section. Therefore, these manufacturing costs can be suppressed, which is preferable.

Further, in the general stud 2 or the stud 2 according to the present invention, at least the side surface of the portion above the portion to be melted in the surplus forming portion 1b of the stud welding ferrule 1, that is, at least the cut in the stud 2 according to the present invention. If a male screw is formed on the side surface of the upper part from the notch 2b, and on the side surface of the general stud 2 extending from the upper end to the lower side in the stud insertion direction as shown in FIG. It is preferable that after the side edge is welded onto the base material B, another member can be separately attached using a nut or the like using this stud.

  Next, a stud welding method using the stud welding ferrule according to the present invention having such a configuration will be described.

First, as a preparation, a stud welding ferrule 1 suitable for a predetermined side surface of the side edge portion of the plate-like member P to be welded to the base material B is prepared.
At this time, for example, when a predetermined side surface of the side edge portion of the plate-like member P to be welded to the base material B is a side edge portion that forms a straight shape of the plate-like member P as shown in FIG. 3 and 7 to 9, the extension planes of both side contact portions 1bb, 1bb of the surplus forming portion 1b are substantially parallel to the insertion direction of the stud insertion hole 1aa and are in the stud insertion hole 1aa. It is only necessary to prepare the stud welding ferrule 1 positioned on one plane passing through the plate, and as shown in FIG. 23, the predetermined side surface of the side edge portion of the plate member P to be welded to the base material B is a plate member. In the case of the side edge portion of the corner portion forming a right angle of P, the extension planes of both side abutment portions 1bb and 1bb of the surplus forming portion 1b as shown in FIGS. 4 to 6 are the stud insertion holes 1aa. Studs positioned on two planes that are substantially parallel to the insertion direction and intersect at substantially right angles passing through the stud insertion hole 1aa. It is only necessary to prepare a ferrule 1 for welding.

  At this time, the distance in the height direction of a predetermined side surface of the side edge portion of the plate-like member P to be welded to the base material B and the lowermost surface abutting portion 1ba in the surplus forming portion 1b of the ferrule 1 for stud welding. If the stud welding ferrule 1 is prepared such that the distance in the insertion direction of the stud insertion hole 1aa between the intermediate contact portion 1bc and the intermediate contact portion 1bc is substantially the same, the stud welding ferrule 1 is connected to both side contact portions 1bb. , 1bb is on a predetermined side surface of the plate member P to be welded on the base material B, the lowermost contact portion 1ba is on the surface of the base material B, and the intermediate contact portion 1bc is on the surface of the plate member P. When the stud gun is moved so as to be in contact with each other, the lowermost contact portion between the both-side contact portions 1bb and 1bb and a predetermined side surface of the plate member P to be welded on the base material B Between 1ba and the surface of the base material B, and between the intermediate contact part 1bc and the surface of the plate member P Re can be made to abut with minimum clearance, preferably it is capable of forming a good weld reinforcement evenly.

  Next, it is suitable for the predetermined side surface of the side edge portion of the plate-like member P to be welded to the base material B and the prepared ferrule 1 for stud welding, and the side edge portion of the plate-like member P is placed on the base material B. The stud 2 corresponding to the utilization form after stud welding is prepared.

At this time, as the stud 2, an arc is generated by a stud gun to form a surplus in the surplus formation portion 1 b of the stud welding ferrule 1 and weld the plate member P onto the base material B. 24 and FIG. 25, a general stud in which a flux portion 2a provided so as to protrude at the lower end may be prepared. Instead of such a general stud 2, FIG. As shown in FIG. 18, a notch comprising a rising surface 2ba that rises substantially parallel to the stud insertion direction from the vicinity of the flux portion 2a, and a horizontal plane 2bb that is substantially perpendicular to the stud insertion direction from the upper edge of the rising surface 2ba to the side surface. with the stud according to the present invention the part 2b is formed, in a more favorable condition compared to common studs side edges of the plate-like member P can be a stud welded onto the base material B Since preferred.

When such a stud 2 according to the present invention is used, for example, as shown in FIG. 19, a predetermined side surface of the side edge portion of the plate-like member P to be welded to the base material B is a straight line of the plate-like member P. In the case of a side edge portion formed in a shape, as the stud welding ferrule 1, the extension planes of both side contact portions 1bb and 1bb of the surplus forming portion 1b as shown in FIGS. 1 to 3 are stud insertion holes. The cross section of the stud insertion hole 1aa of the stud introduction part 1a and the intermediate contact part 1bc of the extra-strip forming part 1b, which are respectively substantially parallel to the insertion direction of 1aa and located on one plane passing through the stud insertion hole 1aa When the stud welding ferrule formed so that the cross-sectional shape of the upper space forms a substantially circular shape is used, the stud 2 has a notch 2b as shown in FIGS. The rising surface 2ba consists of one plane and Formed so as to form the stud most part of the cross-sectional shape than the site that melt weld reinforcement forming portion 1b above the weld ferrule 1, i.e. the notch 2b from above the majority of the cross-sectional shape substantially circle shape In addition, as the stud welding ferrule 1, as shown in FIG. 7 to FIG. 9, the extension planes of both side contact portions 1bb and 1bb of the surplus forming portion 1b are formed by the stud insertion holes 1aa. The cross-sectional shape of the stud insertion hole 1aa of the stud introducing portion 1a and the intermediate contact portion 1bc of the extra-strip forming portion 1b are positioned on one plane that is substantially parallel to the insertion direction and passes through the stud insertion hole 1aa. When the stud welding ferrule is formed so that the cross-sectional shape of each space is rectangular, the stud 2 has a rising surface 2ba of the notch 2b as shown in FIGS. From one plane And the cross-sectional shape of the most part of the stud welding ferrule 1 above the melt-forming part 1b, that is, the most of the cross-sectional part above the notch 2b is formed in a rectangular shape. In the case where a predetermined side surface of the side edge portion of the plate-like member P to be welded to the base material B is a side edge portion of a corner portion forming a right-angle shape of the plate-like member P. In the stud welding ferrule 1, the extension planes of both side contact portions 1bb and 1bb of the surplus forming portion 1b as shown in FIGS. 4 to 6 are substantially parallel to the insertion direction of the stud insertion hole 1aa. respectively positioned on a substantially right angle crossing two planes that passing through the且Tsusu pentad insertion hole 1aa Te and above the intermediate contact portion 1bc the cross-sectional shape and weld reinforcement forming portion 1b of the stud insertion hole 1aa of the stud introduction portion 1a The cross-sectional shape of each of the spaces is formed in a substantially circular shape. When the stud welding ferrule is used, the stud 2 is composed of two planes in which the rising surface 2ba of the notch 2b is substantially parallel to and perpendicular to the stud insertion direction as shown in FIGS. In addition, the cross-sectional shape of the most part of the stud welding ferrule 1 above the melted part 1b in the overfill forming part 1b, that is, the most of the cross-sectional part above the notch part 2b is formed in a circular shape. All you need to do is prepare the studs.

Also at this time, for example when the side edge portions of the plate-like member P only be welded to the base material B is the objective, as the stud 2, upper Ri by stud introduction portion 1 a of the stud welding ferrule 1 In the case of the stud 2 according to the present invention, that is, in the case of the stud 2 according to the present invention, as shown in FIGS. In this case, as shown in FIG. 24, a stud having a fractured portion 2c having a small cross-sectional area may be prepared at an intermediate portion in the stud insertion direction, and the side edge of the plate-like member P is used as the base material B. It is a case where it is only the purpose of welding up, and it is desired to easily determine whether or not the side edge portion of the plate-like member P is welded to the base material B with appropriate strength after stud welding is performed. In the case, the stud 2 is shown in FIG. In the stud 2 in which the rupture portion 2c is formed as described above, a stud having a grip portion 2d having a non-circular cross-section may be prepared at a position above the rupture portion 2c. When it is desired to separately attach another member using a nut or the like by using this stud after welding the side edge portion of the shaped member P on the base material B, at least the stud welding ferrule 1 is used as the stud 2. In the case of the stud 2 according to the present invention, in the case of the stud 2 according to the present invention, at least the side of the portion above the notch 2b, and in the case of a general stud 2 As shown in FIG. 25, a stud having a male screw formed on the side surface of the portion extending from the upper end in the stud insertion direction to the lower side may be prepared.

  After such preparation is completed, first, with the stud 2 inserted into the stud insertion hole 1aa of the stud welding ferrule 1, an operation of attaching the stud welding ferrule 1 and the stud 2 to the stud gun is performed.

  At this time, the stud 2 includes a rising surface 2ba that rises from the vicinity of the flux portion 2a substantially parallel to the stud insertion direction, and a stud insertion direction that extends from the upper edge of the rising surface 2ba to the side surface and a horizontal plane 2bb that is substantially perpendicular. When the stud according to the present invention in which the notch portion 2b is formed is used, the rising surface 2ba of the stud 2 is placed on a predetermined side surface of the plate-like member P on the base material B before the arc is generated by the stud gun. It is necessary to make it face each other.

  As a specific method for making the rising surface 2ba of the stud 2 face a predetermined side surface of the plate-like member P on the base material B before the arc is generated by the stud gun in this way, for example, as the stud 2 10 to 12 and FIGS. 16 to 18, when a stud in which the rising surface 2ba of the notch 2b is a flat surface is used, the stud welding ferrule 1 is shown in FIGS. 1 to 3 and FIG. As shown in FIGS. 7 to 9, the extension planes of the both-side contact portions 1bb and 1bb of the surplus forming portion 1b are substantially parallel to the insertion direction of the stud insertion hole 1aa and pass through the stud insertion hole 1aa. The stud welding ferrule 1 positioned at each of the stud guns 1 and 2 is operated before the arc is generated by the stud gun, that is, the stud welding ferrule 1 and the stud 2 are attached to the stud gun, The tad welding ferrule 1 has both side contact portions 1bb and 1bb on the predetermined side surface of the plate-like member P to be welded on the base material B, and the lowermost contact portion 1ba on the surface of the base material B. When the stud gun is moved so that the contact part 1bc comes in contact with the surface of the plate-like member P, the rising surface 2ba of the notch 2b of the stud 2 and the surplus formation part of the stud welding ferrule 1 The stud welding ferrule 1 and / or the stud 2 may be shifted so that the both-side contact portions 1bb and 1bb of 1b are positioned on substantially the same plane. When the stud 2 is a stud having two flat surfaces in which the rising surface 2ba of the notch 2b is substantially parallel to and perpendicular to the stud insertion direction as shown in FIGS. 13 to 15, the stud welding ferrule 1 is used. As shown in FIGS. 4 to 6, the extension planes of the both-side contact portions 1bb and 1bb of the surplus forming portion 1b are substantially parallel to the insertion direction of the stud insertion hole 1aa and pass through the stud insertion hole 1aa. Using the stud welding ferrules positioned on two planes intersecting at substantially right angles, the operation to be performed before the arc is generated by the stud gun, that is, the operation of attaching the stud welding ferrule 1 and the stud 2 to the stud gun, The stud welding ferrule 1 has both abutting portions 1bb and 1bb on a predetermined side of the plate member P to be welded on the base material B, and the lowermost contact portion 1ba is the surface of the base material B. When the stud gun is moved so that the intermediate contact portion 1bc contacts the surface of the plate member P, one rising surface 2ba of the notch 2b of the stud 2 and the rising surface 2ba One side abutment portion 1bb of the surplus forming portion 1b of the stud welding ferrule 1 adjacent to the other, and the other rising surface 2ba of the stud 2 and the other of the stud welding ferrule 1 adjacent to the rising surface 2ba. The stud welding ferrule 1 and / or the stud 2 may be shifted so that the side contact portions 1bb of the stud welding portion 1bb are located on substantially the same plane.

  Next, the stud welding ferrule 1 is placed on a predetermined side surface of the plate-like member P to be welded on the base material B with both side contact parts 1bb and 1bb, and the lowermost contact part 1ba is the surface of the base material B. In addition, an operation of moving the stud gun so that the intermediate contact portion 1bc is in contact with the surface of the plate-like member P is performed.

  This operation is performed by moving the stud gun on which the stud welding ferrule 1 and the stud 2 are mounted in a state where the stud 2 is inserted into the stud insertion hole 1aa of the stud introducing portion 1a of the stud welding ferrule 1. 20 and FIG. 21, between the abutting portions 1bb, 1bb of the surplus forming portion 1b of the stud welding ferrule 1 and the side surface of the plate member P, the lowermost abutting portion 1ba and the surface of the base material B And between the intermediate contact portion 1bc and the surface of the plate-like member P so as not to generate a gap as much as possible.

  At this time, when a general stud as shown in FIGS. 24 and 25 is used as the stud 1 attached to the stud gun, the flux portion 2a provided protruding from the lower end of the stud 2 as shown in FIG. May be positioned as desired in the direction of the surface of the base material B and / or the surface of the plate member P, and the stud 2 according to the present invention as shown in FIGS. In this case, as shown in FIG. 21, the rising surface 2ba of the notch 2b of the stud 2 is opposed to a predetermined side surface of the plate-like member P on the base material B, that is, the rising surface 2ba of the stud 2 and the plate shape. The stud 2 may be positioned so that the predetermined side surface of the member P comes into contact with or is opposed to the member P with a slight gap.

Thus, between the remaining sides abutting portion 1bb Sheng forming portion 1b, the side surface of 1bb and the plate-like member P of the stud welding ferrule 1 as shown in FIG. 2 0 and 2 1, and the bottom surface abutment portion 1ba The stud welding ferrule 1 is formed between the surface of the base material B and the surface of the plate member P with almost no gap between the surface of the base material B and between the intermediate contact portion 1bc and the surface of the plate member P. Since it abuts against the side surface and the surface, during stud welding, the metal melted in the overfill forming portion 1b of the stud welding ferrule 1 flows out of the stud welding ferrule 1 from between the abutting surfaces. A moderate surplus can be formed and the side edge portion of the plate-like member P can be welded onto the base material B without being oxidized or oxidized by touching the outside air.

  Finally, an operation of welding the side edge portion of the plate-like member P onto the base material B by forming a surplus within the surplus formation portion 1b of the stud welding ferrule 1 by generating an arc with a stud gun. Do.

  At this time, the stud welding ferrule 1 is attached to the predetermined side surface of the plate-like member P to be welded on the base material B with both side contact parts 1bb and 1bb, and the lowermost surface contact part 1ba is the surface of the base material B. In addition, when the stud gun is started in a state where the intermediate contact portion 1bc is in contact with the surface of the plate-like member P, when a general stud gun is used, a weak current is first generated by the flux of the stud 2. A pilot arc is generated by flowing between the portion 2a and the base material B and the plate-like member P, and only the stud 2 is pulled away from the base material B and the plate-like member P, and then a strong current flows. As a result, a strong arc is generated between the lower side of the stud 2 and the base material B and the plate member P, and the lower side of the stud 2, the surface of the base material B, and the side surface of the plate member P are generated by this strong arc. And preset after the surface melts After the elapsed time has elapsed, the stud 2 is pushed back in the direction in which it abuts against the base material B and the plate-like member P, and the current is interrupted. 22, the surface of the base material B, the side surface and the surface of the plate member P are cooled, and the lower side of the melted stud 2, the surface of the base material B, and the plate member P are cooled as shown in FIG. 22. The side surface and the surface are solidified integrally, and an appropriate surplus is formed from the surface of the plate-shaped member P to the surface of the base material B, whereby the side edge of the plate-shaped member P becomes the mother. Welded onto material B.

  Further, at this time, even if a general stud 2 as shown in FIGS. 24 and 25 is used as the stud 2, the lower side of the melted stud 2, the surface of the base material B, the side surface of the plate-like member P, and the like The base material is solidified integrally with the surface, and the side edges of the plate-like member P are formed in a good state in which an appropriate margin is formed from the surface of the plate-like member P to the surface of the base material B. The stud can be welded onto B, but if the stud according to the present invention as shown in FIGS. 10 to 18 is used as the stud 2 in place of such a general stud, the flux provided at the lower end is projected. The notch 2b formed in the vicinity of the portion 2a has a shape conforming to a predetermined side surface of the side edge of the plate-like member P as shown in FIG. Because it can efficiently melt a given side and surface The side edge of the plate-like member P can be stud-welded on the base material B in a better state as compared with a simple stud, particularly when the plate-like member P is made of a thick plate. It is effective because the strength and stability of the can be increased.

  Further, at this time, as the ferrule 1 for stud welding, for degassing, the space in the extra-strip formation part 1b and the outer side are communicated with the lowermost surface contact part 1ba of the extra-spot formation part 1b as shown in FIGS. If the one provided with the groove 1c is used, the gas generated when the lower side of the stud 2, the surface of the base material B, and the side surface and the surface of the plate-like member P are melted is more outward than the surplus forming portion 1b. Not only is preferable, but also when the surplus is formed in the surplus formation part 1b, it is possible to discharge excess molten metal, spatter, etc. to form a uniform and good surplus It is preferable.

  Thus, after the side edge of the plate member P can be easily stud-welded on the base material B in a good state without any special processing on the base material B or the plate member P itself, the ferrule for stud welding is used. If 1 is unnecessary, the stud welding ferrule 1 may be removed by hitting it with a hammer or the like.

Then, as the stud 2, according to the present invention as shown in FIGS. 13 to 1 8 and sites located above Ri by stud introduction portion 1 a of the stud welding ferrule 1 as shown in FIG. 24, i.e., 13 to 18 In the case of using the stud 2 in which the rupture portion 2c having a small cross-sectional area is formed in the middle portion of the stud 2 in the insertion direction of the stud and above the notch portion 2b, the rupture portion 2c of the stud 2 is used. embodiments may be removed portion of the upper side of the fracture portion 2c of by breaking the breaking portion 2c stud 2 by striking a portion of the upper side with a hammer or the like, also have such breaks 2 c are formed 24, when a stud having a grip portion 2d having a non-circular cross-sectional shape is formed at least at a position above the fracture portion 2c as shown in FIG. By only breaks 2 c of the stud 2 To verify that the broken by the torque as 2d to rotate with a wrench or spanner or the like shown in FIG. 23, the side edge portions of the plate-like member P after the stud welding Is preferable because it can be easily determined whether or not it is welded on the base material B with an appropriate strength. Further, as shown in FIG. 25, the stud 2 is at least an extra portion 1b of the ferrule 1 for stud welding . In the case of using a stud in which a male screw is formed on the side surface of the portion above the portion to be melted , that is, in the stud 2 according to the present invention at least on the side surface of the portion above the notch portion 2b, as shown in FIG. Using this stud, other members may be separately attached using nuts or the like.

As shown in FIGS. 1 to 6, the stud welding ferrule 1 has a cross-sectional shape of the stud insertion hole 1aa of the stud introducing portion 1a and a cross-sectional shape of the space above the intermediate contact portion 1bc of the surplus forming portion 1b. A stud welding ferrule formed so as to form a substantially circular shape is used, and the stud 2 is melted as the stud 2 in the surplus formation portion 1b of the stud welding ferrule as shown in FIGS. 10 to 15, that is, in the stud 2 according to the present invention, most of the cross-sectional shape above the notch 2 b is substantially circular. If the formed stud is used, it is preferable because it can correspond to a ferrule or stud for stud welding whose cross-sectional shape that is most frequently used is a substantially round shape, and is most frequently used. It is possible to obtain a stud welding ferrule 1 according to the present invention or a stud 2 according to the present invention only by performing simple processing on a general stud welding ferrule or stud whose cross-sectional shape is a substantially circular shape. Therefore, these manufacturing costs can be suppressed, which is preferable.

It is a perspective explanatory view showing one example of a ferrule for stud welding according to the present invention. It is bottom face explanatory drawing of FIG. It is AA sectional view explanatory drawing of FIG. It is an isometric view explanatory drawing which shows the other Example of the ferrule for stud welding which concerns on this invention. FIG. 5 is a bottom explanatory view of FIG. 4. FIG. 6 is a cross-sectional explanatory view taken along line B-B in FIG. 5. It is a perspective explanatory view showing still another embodiment of the ferrule for stud welding according to the present invention. It is bottom face explanatory drawing of FIG. It is CC sectional view explanatory drawing of FIG. It is a perspective explanatory view showing one example of a stud concerning the present invention. It is bottom surface explanatory drawing of FIG. It is DD sectional view explanatory drawing of FIG. It is a perspective explanatory view showing other examples of the stud concerning the present invention. It is bottom face explanatory drawing of FIG. It is the EE sectional view explanatory drawing of FIG. It is perspective explanatory drawing which shows other Example of the stud which concerns on this invention. It is bottom face explanatory drawing of FIG. FIG. 18 is a cross-sectional explanatory view taken along line FF in FIG. 17. It is an isometric view explanatory drawing which shows an example of the contact state of the ferrule for stud welding in the stud welding method which concerns on this invention. It is sectional explanatory drawing which shows typically an example of the state before a stud melt | dissolves in the surplus formation part of the ferrule for stud welding in the stud welding method which concerns on this invention. It is sectional explanatory drawing which shows typically the other example of the state before a stud melt | dissolves in the surplus formation part of the ferrule for stud welding in the stud welding method which concerns on this invention. It is sectional explanatory drawing which shows typically an example of the state after a stud fuse | melts within the surplus formation part of the ferrule for stud welding in the stud welding method which concerns on this invention. It is sectional explanatory drawing which shows typically an example of the state after performing the removal of the ferrule for stud welding, and fracture | rupture of the holding part of a stat after welding by the stud welding method which concerns on this invention. It is an isometric view explanatory drawing which shows one example of the stud used for the stud welding method which concerns on this invention. It is an isometric view explanatory drawing which shows the other example of the stud used for the stud welding method which concerns on this invention.

Explanation of symbols

1 Ferrule for stud welding
1a Stud introduction part
1aa Stud insertion hole
1b Overfill formation part
1ba Bottom surface contact part
1bb Side contact part
1bc Intermediate contact area
1c Gas vent groove 2 Stud
2a Flux part
2b Notch
2ba Rise surface
2bb horizontal plane
2c Broken part
2d Grip part B Base material P Plate member

Claims (21)

Below the stud introduction part (1a) having the stud insertion hole (1aa), communicated with the stud insertion hole (1aa) and opened below, and the sectional area of the stud insertion hole (1aa) is larger than the sectional area of the stud insertion hole (1aa). Is a stud welding ferrule in which the extra-banking portion (1b) that forms a large space is integrally formed,
The lower surface of the surplus forming portion (1b) is formed from a lowermost surface contact portion (1ba) substantially perpendicular to the insertion direction of the stud insertion hole (1aa) and an end portion of the lowermost surface contact portion (1ba). A pair of side contact portions (1bb, 1bb) that rise substantially parallel to the insertion direction of the stud insertion hole (1aa) and the upper end edges of both side contact portions (1bb, 1bb) are connected to each other and the stud A stud welding ferrule (1), which is formed by an intermediate contact portion (1bc) substantially perpendicular to the insertion direction of the insertion hole (1aa).   A gas venting groove (1c) is provided in the lowermost surface contact portion (1ba) of the surplus forming portion (1b) to communicate the space in the surplus forming portion (1b) with the outside. The ferrule for stud welding (1) according to 1.   Each extension plane of the both-side contact portion (1bb, 1bb) of the extra-strip forming portion (1b) is substantially parallel to the insertion direction of the stud insertion hole (1aa) and passes through the stud insertion hole (1aa). The stud welding ferrule (1) according to claim 1 or 2, which is located on one plane.   Each extension plane of the both-side contact portion (1bb, 1bb) of the extra-strip forming portion (1b) is substantially parallel to the insertion direction of the stud insertion hole (1aa) and passes through the stud insertion hole (1aa). The ferrule (1) for stud welding according to claim 1 or 2, which is located on two planes intersecting at substantially right angles.   The cross-sectional shape of the stud insertion hole (1aa) of the stud introduction portion (1a) and the cross-sectional shape of the space above the intermediate contact portion (1bc) of the extra-strip formation portion (1b) are each substantially circular. The ferrule (1) for stud welding according to any one of claims 1 to 4, wherein the ferrule (1) is formed.   A rising surface (2ba) that rises substantially parallel to the insertion direction of the stud from the vicinity of the flux portion (2a) that protrudes from the lower end, and an insertion direction of the stud that extends from the upper edge of the rising surface (2ba) to the side surface. A stud (2) characterized in that a notch (2b) comprising a vertical horizontal plane (2bb) is formed.   The stud (2) according to claim 6, wherein the rising surface (2ba) of the notch (2b) comprises a flat surface substantially parallel to the stud insertion direction.   The stud (2) according to claim 6, wherein the rising surface (2ba) of the notch (2b) comprises two planes that are substantially parallel to and perpendicular to the stud insertion direction.   9. The break portion (2 c) having a small cross-sectional area is formed at an intermediate portion in the stud insertion direction and above the notch (2 b). Stud (2).   The stud (2) according to claim 9, wherein a grip portion (2d) having a non-circular cross-sectional shape is formed at a position above the fracture portion (2c). The stud (2) according to any one of claims 6 to 9, wherein most of the cross-sectional shape above the notch (2b) is formed in a substantially circular shape.   The stud (2) according to any one of claims 6 to 8, wherein a male screw is formed at least on a side surface of a portion above the notch (2b).   Below the stud introduction part (1a) having the stud insertion hole (1aa), communicated with the stud insertion hole (1aa) and opened below, and the sectional area of the stud insertion hole (1aa) is larger than the sectional area of the stud insertion hole (1aa). A surplus formation portion (1b) that forms a large space is integrally formed, and the bottom surface of the surplus formation portion (1b) is in contact with the bottom surface that is substantially perpendicular to the insertion direction of the stud insertion hole (1aa). A contact portion (1ba), a pair of side contact portions (1bb, 1bb) that rise substantially parallel to the insertion direction of the stud insertion hole (1aa) from the end of the bottom surface contact portion (1ba), A stud welding ferrule that connects the upper edges of the side contact portions (1bb, 1bb) and is formed by an intermediate contact portion (1bc) that is substantially perpendicular to the insertion direction of the stud insertion hole (1aa). The stud insertion hole (1aa) of (1) is inserted into the stud (2) in which a flux portion (2a) provided protruding from the lower end is formed, and the stud is inserted. After attaching the contact ferrule (1) and the stud (2) to the stud gun, the stud welding ferrule (1) is welded to the base material (B) on both side abutments (1bb, 1bb). On the predetermined side surface of the plate-like member (P) to be tried, the lowermost contact portion (1ba) is on the surface of the base material (B), and the intermediate contact portion (1bc) is on the surface of the plate-like member (P). The stud guns are moved so as to contact each other, and then an arc is generated by the stud guns, thereby forming a surplus in the surplus formation part (1b) of the stud welding ferrule (1). A stud welding method comprising welding a side edge of a member (P) onto a base material (B).   As a stud welding ferrule (1), a gas vent groove (1c) for communicating the space in the surplus formation portion (1b) with the outside at the bottom surface contact portion (1ba) of the surplus formation portion (1b) The stud welding method according to claim 13, wherein a stud welding ferrule provided with) is used.   As the stud (2), a rising surface (2ba) rising from the vicinity of the flux portion (2a) substantially in parallel with the stud insertion direction, and substantially perpendicular to the stud insertion direction from the upper edge of the rising surface (2ba) to the side surface Using a stud with a notch (2b) formed of a flat horizontal surface (2bb), the rising surface (2ba) of the stud (2) is used as a base material (B) before the arc is generated by the stud gun. The stud welding method according to claim 13 or 14, wherein the upper plate-like member (P) is opposed to a predetermined side surface.   As the stud (2), a stud whose rising surface (2ba) of the notch (2b) is a single plane is used, and as a stud welding ferrule (1), both sides of the surplus forming part (1b) are in contact with each other. Use the stud welding ferrules where each extension plane of the part (1bb, 1bb) is substantially parallel to the insertion direction of the stud insertion hole (1aa) and located on one plane passing through the stud insertion hole (1aa) The stud welding method according to claim 15, wherein the plate-like member (P) is welded to the base material (B) at a side edge portion that forms a straight shape of the plate-like member (P).   As the stud (2), a notch (2b) having a rising surface (2ba) which is substantially parallel to the insertion direction of the stud and having two planes orthogonal to each other, and a stud welding ferrule (1) The extended planes of the contact portions (1bb, 1bb) on both sides of the raised portion (1b) are substantially parallel to the insertion direction of the stud insertion hole (1aa) and substantially perpendicular to the inside of the stud insertion hole (1aa). Are welded to the base material (B) at the side edges of the plate-like member (P) that form a right angle. The stud welding method according to claim 15.   The stud (2) is a stud in which a broken part (2c) having a small cross-sectional area is formed at a position located above the stud introduction part (1a) of the ferrule for stud welding (1). 18. The stud welding method according to any one of items 1 to 17.   19. The stud welding method according to claim 18, wherein the stud (2) is a stud having a grip portion (2 d) having a non-circular cross-sectional shape at a portion above the fracture portion (2 c). . As a stud welding ferrule (1), the cross-sectional shape of the stud insertion hole (1aa) of the stud introduction part (1a) and the cross-sectional shape of the space above the intermediate contact part (1bc) of the surplus formation part (1b) are: The stud welding ferrules are formed so as to form a substantially circular shape, and the stud (2) is located above the portion that melts in the surplus formation part (1b) of the stud welding ferrule (1). stud welding method according to any one of claims 13 to 1 8 to use most stud portion of the cross-sectional shape is formed so as to substantially form a circle shaped in. The stud (2) according to any one of claims 13 to 17, wherein the stud (2) is a stud having a male screw formed on a side surface of a portion above the portion to be melted in at least the surplus forming portion (1b) of the stud welding ferrule (1). The stud welding method according to any one of the above.

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