TWI769555B - Method of manufacturing a multi-functional fastener - Google Patents

Abstract

A method for manufacturing a multi-functional fastener includes a preparing operation, a forming operation and a threading operation. The preparing operation prepares a metal blank. The forming operation forms a shank and a head on the metal blank. The threading operation equips a thread rolling set having two corresponding rolling plates. Each rolling plate is formed with a plurality of grooves and a plurality of blocks crossing the grooves. Each block is situated between any two of the grooves to form a plurality of threads, slots and main ribs on the shank of the metal blank. Each slot is formed between any two of the threads, and each main rib is formed between any two of the slots to thereby increase cutting efficiency. The slots allow chips to be excluded quickly and reduce a contact area of the shank and an object to thereby reduce the screwing resistance generated during the screwing operation. Thus, the screwing operation is accelerated and labor-saving. The object is prevented from being cracked and the preferable screwing effect is attained.

Description

Manufacturing method of multifunctional fastener

The present invention relates to a manufacturing method, especially a manufacturing method of a multifunctional fastener.

In the manufacturing process of general fasteners, a plurality of blanks are usually cold forged first, so that a head and a rod body extending from the head are respectively formed from each blank, and then a head is formed. The blanks of the head and the rod body are sequentially introduced into a fastener rolling plate set, so as to perform the forming operation of the screw teeth for the rod body of the metal blank. Check, the conventional fastener rolling plate set includes two Correspondingly arranged rolling plates, and each rolling plate includes a plurality of forming tooth sockets arranged at an oblique interval, so that a blank formed with the head and the rod body is placed between the rolling plates, So that when the rolling plates move in parallel in the opposite direction, the metal blank is squeezed by the rolling plates, and then the forming grooves are used to rub a plurality of threads on the rod body, so that the forming of the fastener can be completed. Operation.

However, after the actual use, it was found that the fastener rolling plate set only has these forming grooves, which makes the processed and formed threads too monotonous and the use is limited. During the locking process, the rod body is in contact with the lock in a large area, which leads to an increase in the locking resistance. Furthermore, the fastener cannot provide enough space for chips, so that the chips generated during the locking process cannot be Timely discharge will cause the fastener to be unable to be screwed in smoothly, which will increase the difficulty of locking and reduce the locking speed. At the same time, the fastener cannot be effectively and tightly locked with the lock. If it encounters external force, the fastener is more likely to loosen, shake or fall off, which makes the locking stability of the fastener poor. In turn, the locking effect is affected. If multiple grooves are to be formed on the rod or thread of the fastener for the chips to be discharged outward, it must be processed again after the fastener is formed (such as milling pins). or grinding), which is not only time-consuming and labor-intensive, but also increases the processing cost. Moreover, the fastener is reprocessed, which not only makes the reprocessed area weaker, but also tends to cause metal fatigue, which makes the fastener more It is easy to break and needs to be improved.

Therefore, the purpose of the present invention is to provide a multi-functional fastener manufacturing method, which can form a plurality of screw teeth and grooves arranged at intervals on the blank rod body, and a convex rib arranged between any two grooves, In order to provide better chip containment and chip removal effect, to reduce the locking resistance, and to avoid the occurrence of cracks in the lock compound, a better locking effect can be achieved.

Therefore, the manufacturing method of the multifunctional fastener of the present invention sequentially includes the steps of preparation, rod body forming and screw thread forming. First, a metal blank is prepared in the preparation step, and in the rod body forming step, the Both ends of the metal blank are respectively formed with a head and a rod body. As for the screw thread forming step, it is equipped with a fastener rolling plate group, and the fastener rolling plate group has two rolling plates, and each rolling plate is There are a plurality of long grooves arranged at intervals, and a plurality of convex blocks arranged between any two long grooves, so that the rod body of the metal blank is squeezed and rolled by the fastener rolling plate group, and then formed Plural threads, multiple grooves located between any two threads, and multiple protruding ribs formed between any two grooves, not only effectively reduce the contact area between the rod body and the lock, but also through these Convex ribs can effectively assist cutting, and the grooves can quickly remove chips, so that the locking process can reduce the locking resistance, so as to achieve faster, less labor, and effectively prevent the occurrence of cracking of the lock compound, which is better. locking effect.

The foregoing and other technical contents, features and effects of the present invention will be clearly understood in the following detailed description of the preferred embodiments with reference to the drawings.

Referring to FIGS. 1 and 2 , a method 3 for manufacturing a multifunctional fastener of the present invention includes a preparation step 31 , a rod body forming step 32 , and a screw thread forming step 33 ; wherein, in the preparation step 31 , , a metal blank 4 is prepared, and the metal blank 4 is cut from a metal wire (not shown in the figure) according to a predetermined length, and then in the rod body forming step 32, the metal blank 4 is punched A head portion 41 is formed, a rod body 42 extending outward from the head portion 41 , and a tail portion 43 opposite to the head portion 41 .

Continuing the above, in the screw thread forming step 33, a fastener rolling plate group 5 is prepared, and the fastener rolling plate group 5 includes two correspondingly arranged rolling plates 51, and each rolling plate 51 includes a rolling surface 510, which are respectively formed at the leading end 511 and the forming end 512 at both ends of the rolling surface 510, a top end 513 connecting the leading end 511 and the forming end 512, and a bottom end opposite to the top end 513. 514, a plurality of elongated grooves 515 arranged at intervals on the rolling surface 510, and a plurality of projections 516 arranged between any two elongated grooves 515, and in this embodiment, the rolling surface 510 is additionally provided with an adjacent The tail body forming part 517 of the bottom end 514 can process the tail part 43 into a pointed tail, a flat tail or a drill tail. The 516 is gradually inclined from the top end 513 to the bottom end 514, and the preferred inclination angle is between 5 and 20 degrees. Referring to FIG. 4A and FIG. 4B, each bump 516 includes a flat surface 5161. and a circular arc surface 5162 connecting the flat surface 5161. In addition, as shown in FIG. 4C and FIG. 4D, the bumps 516 can also be arranged in a complete arc shape, that is, the bumps 516 are composed of two arc surfaces. It is composed of 5162, or it is composed of two flat surfaces 5161, which are completely conical.

Referring to FIG. 2 and FIG. 3 , when the fastener rolling plate group 5 is in use, it is attached to a fastener rolling machine (not shown in the figure), so that the metal blanks 4 are sequentially introduced into the fastener. Rolling operation is performed between the rolling plates 51, and each metal blank 4 enters from the lead-in end 511 and is rolled by the rolling plates 51 to squeeze and roll on the rod body 42 of the metal blank 4; At this time, the long grooves 515 are respectively provided on the rolling plates 51, and the protrusions 516 are arranged between any two long grooves 515, so that the rod body 42 can be formed with a plurality of threads 44, and the plurality of threads are located in the rod body 42. The grooves 45 between any two screw teeth 44, and a plurality of protruding ribs 46 formed between any two grooves 45, the number of the grooves 45 and the protruding ribs 46 is preferably 2-3, and the The tail portion 43 is formed into a pointed tail shape by the tail body forming portion 517. Therefore, through the rolling process, the grains inside the grooves 45 are squeezed and compressed, so that the grain structure is finer and the grains are improved at the same time. The strength of the grooves 45 and the surrounding metal, and reducing the surface roughness of the grooves 45 can not only achieve surface strengthening, but also avoid micro cracks, thereby reducing the probability of metal fatigue. At the same time, by reducing the grooves 45 The high surface roughness is more helpful for the chips generated during the locking process to be discharged from the grooves 45 smoothly.

Referring to FIG. 3 , during the locking operation, a rotational torque is applied to the head 41 . At this time, not only can the tail 43 be used to drill and cut the lock (not shown in the figure), but also through the screws. The teeth 44 cut the lock, and at the same time cooperate with the protruding ribs 46 to effectively assist in cutting the lock, thereby effectively destroying the fibers of the lock, thereby reducing the locking resistance generated during the locking process, and avoiding the In addition, the chips generated during the locking process can be contained and discharged through the grooves 45, so as to achieve the effect of rapid chip removal and avoid The locking process is hindered by chips, or it may lead to the occurrence of cracks in the locking compound. Furthermore, the grooves 45 greatly reduce the contact area between the rod body 42 and the locking compound, so that the lock cooperates The operation is faster, labor-saving, and achieves a better locking effect.

Referring to FIG. 5 and FIG. 6 , the second preferred embodiment of the present invention still includes the components described in the first embodiment, and its purpose and function are the same as those of the first embodiment, and will not be repeated here. In this embodiment, the protruding blocks 516 are arranged vertically, and the protruding blocks 516 extend from the top end 513 to the bottom end 514, and the preferred inclination angle is set at 0 degrees, and is consistent with the lead-in. The ends 511 are arranged in parallel, so that the metal blank 4 to be cut according to a predetermined length is prepared in the preparation step 31 , and the head 41 and the rod body are formed from the metal blank 4 in the rod body forming step 32 . 42 and the tail 43, and then in the screw thread forming step 33, the metal blank 4 is squeezed and rolled by the rolling plates 51, and the screw threads 44 are formed on the rod body 42, The grooves 45 formed between any two screw teeth 44 and the protruding ribs 46 formed between any two grooves 45 can effectively cut the lock by the screw teeth 44 cooperating with the protruding ribs 46 compound, so as to destroy the fibers of the lock compound, further reduce the locking resistance generated during the locking process, and prevent the fibers of the lock compound from being entangled on the rod body 42, while the grooves 45 Not only can the chips be contained and discharged to the outside, but also the contact area between the rod body 42 and the locking compound is greatly reduced, thereby achieving rapid chip removal, making the locking operation more rapid, labor-saving, and achieving better locking Effect.

Referring to FIG. 7, FIG. 8 and FIG. 9, the third preferred embodiment of the present invention still includes the components described in the first embodiment, and its purpose and function are the same as those of the first embodiment. To repeat, this embodiment is particularly in that: one end of each protruding block 516 is provided with a concave hole 518, and the protruding heights 516H of the protruding blocks 516 are uniformly set from the top end 513 to the bottom end 514, so as to facilitate the In the preparation step 31 , the metal blank 4 is prepared, and in the rod body forming step 32 , after the head 41 , the rod body 42 and the tail 43 are formed from the metal blank 4 , the screw thread is then formed by spinning. In step 33, a plurality of chip evacuation segments 461 are formed on the protruding ribs 46 through the concave holes 518, as shown in FIG. A groove 45 is provided with the same width and depth, so not only can the space of the grooves 45 be enlarged by the chip removal sections 461, so that the generated chips can quickly enter the grooves 45, and the The contact area between the convex rib 46 and the lock is equal, so that the locking operation is faster and labor-saving, and the locking resistance during the locking process is greatly reduced, so as to achieve a better locking effect.

11A and 11B, the height 461T of each chip evacuation section 461 can be increased or decreased according to the characteristics of the metal blank 4, preferably 0.05mm~0.35mm, and the rod of the metal blank 4 The body 42 defines a center point R, and the angle formed by the center point R extending outward toward the two ends of each groove 45 adds up to a first angle (that is, in FIG. 11B , the first angle is equal to the angle b1 plus the angle b2), in addition, the circumference angle (ie, 360 degrees) minus the first angle forms a second angle (ie, in FIG. 11A and FIG. 11B, the second angle is equal to the angle a1 plus the angle a2), the first angle and The preferred ratio of the second angle is set between 1:7 and 3:5. As shown in FIG. 11C , the outer periphery of the rod body defined by the two ends of each groove 45 and the rod body 42 is connected The preferred ratio of the length (ie at c1) to the width and length of each chip removal section 461 (ie at c2) is 1:0.020~0.10, so as to effectively prevent the chip removal sections 461 from collapsing. Please refer to the figure for details. As shown in 11D, the preferred ratio between the diameter of the rod body 42 (ie at d1) and the depth distance of the groove depth of each groove 45 (ie at d2) is 1:0.06-0.25.

Referring to FIGS. 12A and 12B , the fourth preferred embodiment of the present invention still includes the components described in the third embodiment, and its purpose and functions are the same as those of the third embodiment, and will not be repeated here. In this embodiment, the protruding height 516H of the protruding blocks 516 is gradually increased from the top end 513 to the bottom end 514 , as shown in FIG. 12B , or as shown in FIG. 12A . The protruding height 516H of the protruding block 516 is arranged in two stages, and the protruding height 516H of the protruding block 516 adjacent to the top end 513 is smaller than the protruding height 516H of the protruding block 516 adjacent to the bottom end 514 , please refer to FIG. 13 and FIG. 14 As shown, in order for the rod body 42 to form a first cutting segment 421 connected to the head 41, and a second cutting segment 422 connected to the tail 43, and the depth of the groove 45 of the first cutting segment 421 The depth of the groove 45 of the second cutting section 422 is shallower than that of the second cutting section 422, as shown in FIG. 13, so that the groove 45 of the second cutting section 422 has a larger chip capacity and cutting amount, which is more conducive to locking In addition, the groove 45 of the first cutting section 421 can also assist in chip removal and enhance the overall structural strength, and the shallow depth of the groove 45 of the first cutting section 421 is conducive to the accumulation of chips, so that the The chips extrude the drill hole to the outside, so as to improve the tightness between the whole screw and the drill hole, so as to achieve the effect that the end of the screw does not shake.

Referring to FIG. 15A and FIG. 15B , the fifth preferred embodiment of the present invention still includes the components described in the third embodiment, and its purpose and functions are the same as those of the third embodiment, and will not be repeated here. In this embodiment, the width 516W of the bumps 516 is gradually widened from the top end 513 to the bottom end 514 , as shown in FIG. 15B , or as shown in FIG. 15A , the bumps The width 516W of the 516 is arranged in two sections, and the width 516W of the bump 516 adjacent to the top end 513 is smaller than the width 516W of the bump 516 adjacent to the bottom end 514, as shown in FIG. 16 and FIG. 17, so as to facilitate the rod body 42 is formed with a first cutting section 421 connected to the head 41, and a second cutting section 422 connected with the tail 43, and the width of the groove 45 of the first cutting section 421 is wider than that of the second cutting section 422. The width of the groove 45 is narrow, as shown in FIG. 16 , so as to effectively increase the cutting capacity and chip capacity of the groove 45 of the second cutting segment 422 , which is more conducive to the cutting operation in the early stage of locking. The grooves 45 of the cutting section 421 can also assist in chip removal and enhance the overall structural strength, and the shallow depth of the grooves 45 of the first cutting section 421 is conducive to the accumulation of chips, so that the chips can be squeezed to the outside of the hole. In order to improve the tightness between the whole screw and the drilled hole, so as to achieve the effect of not shaking the end of the screw.

Referring to FIG. 18 and FIG. 19 , the sixth preferred embodiment of the present invention still includes the components described in the third embodiment, and its purpose and functions are the same as those of the third embodiment, and will not be repeated here. In this embodiment, the protruding height 516H of the bumps 516 is gradually increased from the top end 513 to the bottom end 514 , as shown in FIG. 12B , and the width 516W of the bumps 516 is determined by the The top end 513 is gradually widened toward the bottom end 514 , as shown in FIG. 15B , so that the depth of the groove 45 of the first cutting section 421 is shallower than the depth of the groove 45 of the second cutting section 422 , and The width of the groove 45 of the first cutting section 421 is narrower than the width of the groove 45 of the second cutting section 422, so as to increase the chip capacity and cutting capacity of the groove 45 of the second cutting section 422. The grooves 45 of the cutting section 421 can also assist in chip removal and enhance the overall structural strength. In addition, during the locking operation, the grooves 45 can accommodate part of the chips, which is more helpful to prevent the screws from loosening or loosening. Shake and other phenomena, thereby greatly improving the locking effect and locking stability, and the shallow depth of the groove 45 of the first cutting section 421 is conducive to the accumulation of chips, so that the chips are squeezed to the outside to drill holes to lift the screw The tightness between the whole body and the drilled hole, so as to achieve the effect that the end of the screw does not wobble, of course, the two-stage gradual height setting of the fourth preferred embodiment of the present invention can also be matched with the two-stage type of the fifth preferred embodiment of the present invention. The gradual width setting is combined and changed (not shown in the figure), so as to adjust the depth and width of the grooves 45 according to actual needs.

Referring to FIG. 20 to FIG. 21 , the seventh preferred embodiment of the present invention still includes the components described in the first embodiment, and its purpose and function are the same as those of the first embodiment, and will not be repeated here. In this embodiment, the rolling surface 510 is only partially provided with the projections 516, and the projections 516 can be arranged adjacent to the top end 513 or be arranged adjacent to the bottom end 514, and the present In the embodiment, the projections 516 are set adjacent to the bottom end 514 as an example for illustration, so that the metal blank 4 is prepared in the preparation step 31 and the metal blank 4 is prepared in the rod body forming step 32 . After forming the head 41 , the rod body 42 and the tail part 43 , in the screw thread forming step 33 , the screw threads 44 are formed on the rod body 42 by the protrusions 516 , and at the same time The grooves 45 formed between any two screw teeth 44 and the protruding ribs 46 formed between any two grooves 45 are formed on part of the rod body 42 , and the grooves 45 and the protruding ribs 46 Preferably, it is formed between 5 to 6 screw threads 44 .

Referring to FIG. 22 to FIG. 23, the eighth preferred embodiment of the present invention still includes the components described in the first embodiment, and its purpose and function are the same as those of the first embodiment, and will not be repeated here. In this embodiment, at least one ridge 519 and a toothless area A are provided on each rolling surface 510. Referring to FIG. 22, the toothless area A is set adjacent to the top end 513, and these The ridges 519 extend downward from the toothless area A to the bottom end 514 as an example for illustration. Please refer to FIG. 23 , so that a toothless segment 47 can be formed on the rod body 42 by the toothless area A. The screw threads 44 are formed on the rod body 42 by the long grooves 515 , and the grooves 45 and the ribs 46 are formed by the projections 516 . In addition, the projections 519 can pass through the grooves 45 . A plurality of notches 48 are formed on the threads 44. In addition, the tail portion 43 is preformed by a processing machine (not shown in the figure) to form the shape of a drill tail, so that not only the notches 48 can be used to communicate with the grooves 45, so that the chips can enter the grooves 45 through the notches 48, so as to achieve rapid chip removal, and at the same time, the chips will not be blocked by the threads 44 during the process of discharge, so as to achieve better chip removal. Effect.

Referring to FIG. 24 and FIG. 25, the ninth preferred embodiment of the present invention still includes the components described in the fifth embodiment, and its purpose and function are the same as those of the eighth embodiment, and will not be repeated here. In this embodiment, the rolling surface 510 is provided with the toothless area A adjacent to the bottom end 514 , and the toothless area A is provided with a plurality of raised lines 519 . In addition, the long grooves 515 extend from the top end 513 Extending toward the toothless area A, the bumps 516 are arranged between any two elongated grooves 515 and adjacent to the toothless area A, and the bumps 516 and the raised lines 519 are arranged at corresponding positions, Therefore, the metal blank 4 is prepared in the preparation step 31 , and the head 41 , the rod body 42 and the tail 43 are formed from the metal blank 4 in the rod body forming step 32 , and in this embodiment , the tail portion 43 is formed into a drill tail shape by a processing machine (not shown in the figure) in advance, and then in the screw thread forming step 33, when the metal blank 4 enters from the lead-in end 511 and is subjected to the When the rolling plate 51 is rubbed to squeeze and rub the rod body 42 , the upper end of the rod body 42 is formed with the screw teeth 44 corresponding to the equal-length grooves 515 , and the rod body 42 corresponds to the equal protrusions 516 . The grooves 45 and the protruding ribs 46 between any two threads 44 are formed here. In addition, the protuberances 519 are connected to the protruding blocks 516 and extend toward the tail body forming part 517, and the toothless area is A. The long grooves 515 have not been provided, so that the tail end of the rod body 42 is not formed with the threads 44, and the grooves 45 and the protruding ribs 46 extend to the tail 43 for better locking. combined effect.

Summarizing the above, the multi-functional fastener manufacturing method of the present invention is that the rolling plate of the fastener rolling plate set includes a plurality of elongated grooves and protrusions arranged in a staggered manner, so as to facilitate the rod body of the metal blank to form these Screw teeth, the grooves located between any two screw teeth, and the convex ribs formed between any two grooves, in addition to effectively assisting the cutting of the screw teeth by the convex ribs, at the same time by the The groove quickly removes chips, and greatly reduces the contact area between the rod body and the lock, so that the locking process is faster and labor-saving, while reducing the locking resistance during the locking process and effectively preventing the lock from cracking. The relationship between the materials occurs, and a better locking effect is achieved.

However, the above descriptions are only to illustrate the preferred embodiments of the present invention, and should not limit the scope of implementation of the present invention, that is, simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the contents of the description of the invention. , shall still fall within the scope covered by the patent of the present invention.

(this invention) 3: Manufacturing method of multifunctional fasteners 31: Preparation steps 32: Rod forming steps 33: Spiral Thread Spinning Steps 4: Metal blanks 41: Head 42: Rod body 43: tail 44: Thread 45: Grooves 46: Ribs 47: toothless segment 48: Notch 421: The first cutting segment 422: Second cutting segment 461: Chip removal section 461T: Height of chip removal section 5: Fastener rolling plate group 51: Rolling Plate 510: Rolled Surface 511: Import side 512: Formed End 513: Top 514: Bottom 515: Long slot 516: bump 516H: Projection height of bump 516W: bump width 517: Tail body forming department 518: Recessed hole 519: Relief 5161: Flat face 5162: Arc face R: center point A: toothless area

FIG. 1 is a schematic flowchart of a first preferred embodiment of the present invention. FIG. 2 is a schematic diagram of the rolling process of the first preferred embodiment. FIG. 3 is a schematic diagram of the fastener to be formed according to the first preferred embodiment. 4A-4D are cross-sectional views of the rolling plate of the first preferred embodiment. FIG. 5 is a schematic diagram of the rolling process of the second preferred embodiment of the present invention. FIG. 6 is a schematic diagram of the fastener to be formed in the second preferred embodiment. FIG. 7 is a cross-sectional view of a rolling plate according to the third preferred embodiment of the present invention. FIG. 8 is a cross-sectional view of another rolling plate according to the third preferred embodiment. FIG. 9 is a schematic diagram of the fastener to be formed in the third preferred embodiment. FIG. 10 is an S-S sectional view of the fastener to be formed in the third preferred embodiment. 11A-11D are S-S sectional views of the fastener to be formed in the third preferred embodiment. 12A-12B are sectional views of the rolling plate according to the fourth preferred embodiment of the present invention. FIG. 13 is an S-S sectional view of the fastener to be formed in the fourth preferred embodiment. FIG. 14 is a schematic diagram of the fastener to be formed in the fourth preferred embodiment. 15A-15B are cross-sectional views of the rolling plate according to the fifth preferred embodiment of the present invention. FIG. 16 is an S-S sectional view of the fastener to be formed in the fifth preferred embodiment. FIG. 17 is a schematic diagram of the fastener to be formed according to the fifth preferred embodiment. FIG. 18 is an S-S sectional view of the sixth preferred embodiment of the present invention. FIG. 19 is a schematic diagram of the fastener to be formed according to the sixth preferred embodiment. FIG. 20 is a schematic diagram of the rolling process of the seventh preferred embodiment of the present invention. FIG. 21 is a schematic diagram of the fastener to be formed according to the seventh preferred embodiment. FIG. 22 is a schematic diagram of the rolling process of the eighth preferred embodiment of the present invention. FIG. 23 is a schematic diagram of the fastener to be formed in the eighth preferred embodiment. FIG. 24 is a schematic diagram of the rolling process of the ninth preferred embodiment of the present invention. FIG. 25 is a schematic diagram of a fastener to be formed according to the ninth preferred embodiment.

3: Manufacturing method of multifunctional fasteners 31: Preparation steps 32: Rod forming steps 33: Spiral Thread Spinning Steps

Claims (20)

A method for manufacturing a multifunctional fastener, comprising: a preparation step, which is equipped with a metal blank, and the metal blank is cut from a metal wire according to a predetermined length; a rod body forming step, which comprises the The metal blank is formed into a head, a rod body extending outward from the head, and a tail opposite to the head; and a screw thread forming step, which is provided with a fastener rolling plate group, and The fastener rolling plate set has two correspondingly arranged rolling plates, and each rolling plate includes a rolling surface, respectively formed on the leading end and the forming end at both ends of the rolling surface, and a connecting the leading end and the forming end. The top end of the forming end, a bottom end opposite to the top end, a plurality of elongated grooves arranged at intervals on the rolling surface, and a plurality of convex blocks arranged between any two elongated grooves, and one end of each convex block is opened There is a concave hole, so that the metal blank is extruded and formed by the fastener rolling plate group, and then a plurality of screw teeth are formed on the rod body, and a plurality of grooves are formed between the any two screw teeth. A plurality of protruding ribs are formed between the grooves, and a plurality of chip removal sections are formed on the protruding ribs. The method for manufacturing a multifunctional fastener according to claim 1, wherein the tail can be in the form of a pointed tail, a drilled tail or a flat tail. The method for manufacturing a multifunctional fastener according to claim 1, wherein each of the protruding blocks is arranged obliquely. The method for manufacturing a multifunctional fastener according to claim 1, wherein each of the bumps is arranged vertically. The method for manufacturing a multifunctional fastener according to claim 1, wherein each bump includes a flat surface and an arc surface connecting the flat surface. The method for manufacturing a multifunctional fastener according to claim 1, wherein each of the bumps is arranged in an arc shape or a cone shape. The method for manufacturing a multifunctional fastener according to claim 1, wherein the bumps are arranged in a progressively inclined manner from the top end to the bottom end. The method for manufacturing a multifunctional fastener according to claim 1, wherein the bumps extend from the top end toward the bottom end, and are arranged in parallel with the lead-in end. The method for manufacturing a multifunctional fastener according to claim 1, wherein each rolling surface is provided with at least one rib. The method for manufacturing a multifunctional fastener according to claim 1, wherein the height of each chip removal segment is more than 0.05 mm. The method for manufacturing a multifunctional fastener according to claim 1, wherein the rod body of the metal blank defines a center point, and the angles formed by the center point extending outward toward both ends of each groove add up to each other A first angle is formed, and the circumference angle (360 degrees) minus the first angle forms a second angle, and the ratio between the first angle and the second angle is set between 1:7 and 3:5. The method for manufacturing a multifunctional fastener according to claim 1, wherein the ratio between the length of the outer peripheral edge of the rod body and the width and length of each chip evacuation segment is set to be 1:0.020 or more. The method for manufacturing a multifunctional fastener according to claim 1, wherein the grooves and the protruding ribs are formed between 5 to 6 threads. The method for manufacturing a multifunctional fastener according to claim 1, wherein the protruding heights of the bumps are uniformly set from the top end to the bottom end, so that each groove is set with the same width and depth. The method for manufacturing a multifunctional fastener according to claim 1, wherein the protruding heights of the protruding blocks are gradually increased from the top end to the bottom end, so that the rod body can be formed with a connection connecting the head. A first cutting section, and a second cutting section connected to the tail, and the depth of the groove of the first cutting section is shallower than the depth of the groove of the second cutting section. The method for manufacturing a multifunctional fastener according to claim 1, wherein the protruding heights of the protruding blocks are arranged in two stages, and the protruding heights of the protruding blocks adjacent to the top end are smaller than the protruding heights of the protruding blocks adjacent to the bottom end. The protruding height is so that the rod body can form a first cutting section connecting the head and a second cutting section connecting the tail, and the depth of the groove of the first cutting section is larger than that of the second cutting section The depth of the groove is shallow. The method for manufacturing a multifunctional fastener according to claim 1, wherein the widths of the protruding blocks are gradually widened from the top end to the bottom end, so that the rod body can form a first connection connecting the head. A cutting segment, and a second cutting segment connected to the tail, and the width of the groove of the first cutting segment is narrower than the width of the groove of the second cutting segment. The method for manufacturing a multifunctional fastener according to claim 1, wherein the widths of the bumps are arranged in two sections, and the width of the bumps adjacent to the top end is smaller than the width of the bumps adjacent to the bottom end, so as to facilitate The rod body is formed with a first cutting section connected to the head and a second cutting section connected to the tail, and the width of the groove of the first cutting section is narrower than that of the second cutting section . The method for manufacturing a multifunctional fastener according to claim 1, wherein each rolling surface is provided with a toothless area, and the toothless area is provided with a plurality of raised lines. The method for manufacturing a multifunctional fastener according to claim 1, wherein the ratio between the diameter of the rod body and the depth distance of the groove depth of each groove is set at 1:0.06-0.25.

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