CN102814455A - Pierce nut manufacturing apparatus - Google Patents
Pierce nut manufacturing apparatus Download PDFInfo
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- CN102814455A CN102814455A CN2012101866089A CN201210186608A CN102814455A CN 102814455 A CN102814455 A CN 102814455A CN 2012101866089 A CN2012101866089 A CN 2012101866089A CN 201210186608 A CN201210186608 A CN 201210186608A CN 102814455 A CN102814455 A CN 102814455A
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- Prior art keywords
- nut
- guide portion
- knock
- drift
- blank
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/64—Making machine elements nuts
- B21K1/70—Making machine elements nuts of special shape, e.g. self-locking nuts, wing nuts
- B21K1/702—Clinch nuts
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- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention provides a piercing nut manufacturing apparatus which uses a nut former for forming a nut blank (11) for a high stress type piercing nut (1). A side wall (14) protruding along the peripheral edge of the nut body so as to surround the pilot portion (13) are slanted against the axial line in order to form the annular groove (15) into a dovetail groove. A cylindrical pilot portion serves as a metal plate piercing punch is disposed at the central portion including the preliminary hole of a square nut body, and an end portion thereof serves as a punch for punching out a metal plate. The undercut screw-hole is pierced and the end surface portion of pilot portion radially widened, and the four diagonal corner end surfaces of nut blank finished with the forming process of slanting and enlarging the peripheral side wall surface of pilot portion for defining annular groove are pushed out by four knockout pins (77) and then pushed in between a pair of fingers (58, 58) of a transfer mechanism located in the vicinity of end surface of a die.
Description
Technical field
The manufacturing installation of nut (Pierce nut) the present invention relates to puncture; The nut of said puncture nut itself carries out stamping-out to metallic plate; Then thereby the peripheral part riveting in stamping-out hole is decided to be fixedly connected with metallic plate; Specially refer to the improvement through the manufacturing installation of the puncture nut of Japan's special fair 8-29392 communique (patent documentation 1) motion and enforcement by the application inventor, the manufacturing installation of this puncture nut is the manufacturing installation that the puncture nut of the heavily stressed type that can access big rivet force is made.
Background technology
The manufacturing installation of the puncture nut described in the special fair 8-29392 communique of said Japan utilizes the nut upsetter to implement; In profile is the guide portion that the central portion of square nut main body is provided with tubular; And the end face of the guide portion of said tubular plays a role as the drift that metallic plate is carried out stamping-out; With the mode of surrounding said guide portion the outstanding sidewall that is formed with of outer peripheral edges along said nut main body; Between the guide portion of said tubular and said sidewall, form endless groove, the side wall surface both sides opposite each other that delimit said endless groove are tilted with respect to axis, thereby said endless groove is formed the dovetail groove of depths broad; At this moment; Have following big advantage: the inside dimensions of said endless groove and the dimensional accuracy of side dimension are high, and the stamping-out that is undertaken by guide portion is good, can produce the puncture nut of the high-quality heavily stressed type of the big rivet force that can obtain fixing in batches.
Make under the situation of aforesaid heavily stressed type puncture nut utilizing the nut upsetter; To accomplish nut blank after each upsetting pressure operation of Fig. 1 of said patent documentation 1 (Japan special fair 8-29392 communique)～shown in Figure 3 and eject the place ahead of the forging die of each operation; Utilize the forging die that is transplanted on subsequent processing along near the said nut blank of mutual opposed a pair of manipulator clamping of the connecting gear that moves back and forth the front surface of said forging die; Carry out next step upsetting pressure processing then; But; When the nut blank after the upsetting pressure processing of the punching shown in Figure 2 that will accomplish said patent documentation 1 and guide portion expansion operation is transplanted on sidewall slope upsetting pressure operation shown in Figure 3, there is following problem.
Figure 14 and Figure 15 nut blank 11 that to be the expression punching shown in Figure 2 that will accomplish said patent documentation 1 (Japan special fair 8-29392 communique) enlarge after the operation with guide portion ejects from forging die 31, and the key diagram of the flow chart of the said nut blank 11 of mutual opposed a pair of manipulator 39,39 clampings of the connecting gear that moves back and forth along the front surface of forging die 31 of utilization.Through the not shown spring direction application of force approaching toward each other, thereby make that the interval of said two manipulators 39,39 is slightly littler than the opposite side size of nut blank 11 to two manipulators 39,39.
Base portion at the pierce punch 33 of the recess that is equipped on forging die 31 32 is provided with abducent tapered wall 34; The scarf end face of being located at the tubular inserts 35 of pierce punch 33 is provided with circular protrusion 36 outside; Said circular protrusion 36 is outstanding with the mode of surrounding tapered wall 34, and tubular inserts 35 is held and is fixed in retainer 37.
When the nut blank 11 that utilizes 38 pairs of tubular drifts to be inserted into the recess 32 of forging die 31 pushes; Said tubular drift 38 and pierce punch 33 co-operatings; The preparation bottom outlet that does not have to connect of nut blank 11 is carried out punching and thread Pilot hole 12 upsetting pressures are shaped; Then, be inserted under the state of endless groove 15 at circular protrusion 36 with tubular inserts 35, utilize tapered wall 34 towards the end face part of radial direction pushing guide portion 13 so that the end face part of this guide portion 13 expands opens; All side wall surfaces 16 of said guide portion 13 are tilted with respect to axis; Thereby the cross sectional shape of endless groove 15 is formed the dovetail groove of depths broad, and the end face lateral border of guide portion 13 (also being the ora terminalis of all side wall surfaces 16) is restricted with the medial surface butt of circular protrusion 36, thereby stoped excessive inclination and distortion; Thus, the inside dimensions fine finishining of the end face external diameter of guide portion 13 that is endless groove 15 is fixed dimension accurately.
When the expansion operation of the punching of thread Pilot hole 12 and guide portion 13 was accomplished, shown in figure 14, at first, tubular drift 38 was retreated with the mode of leaving from forging die 31, and two manipulators 39,39 move near the front surface of forging die 31.At this moment, the blinking scrap sheet 12c that utilizes pierce punch 33 stamping-outs to get off is contained in the tube hole and being removed of tubular drift 38.Then; Shown in figure 15; Advance and outstanding and with nut blank 11 jack-up and after this nut blank 11 is pressed into two manipulators 39, carries out clamping between 39 at pierce punch 33 from forging die 31; Pierce punch 33 retreats in the forging die 31, is shifted into the forging die front surface of subsequent processing by the nut blank 11 of two manipulators, 39,39 clampings.
On the other hand; Because the outside diameter d of the terminal part 33a of pierce punch 33 is roughly the same with the diameter of the thread Pilot hole 12 that forms in 11 punchings of nut blank; Therefore; When pierce punch 33 was retreated in forging die 31, the terminal part 33a and the nut blank 11 of this pierce punch 33 interfered, and generation will retract the stress in the forging die 31 with nut blank 11.But, in common job run, because very strong to the spring pressure of two manipulator 39,39 application of forces; Therefore do not have obstacle, but in job run for a long time, the elastic force that is produced by spring that two manipulators 39,39 receive dies down; Perhaps produce be full of cracks or fragment etc. at pierce punch 33; Owing to these reasons, also great accidents such as following can take place sometimes: when pierce punch 33 was retreated, nut blank 11 was pulled in the forging die 31; Can not nut blank 11 be transplanted on subsequent processing, thereby running stops.
Patent documentation 1: the special fair 8-29392 communique of Japan
Summary of the invention
The present invention accomplishes as purpose to solve said problem points; Its problem is to provide the manufacturing installation of the puncture nut of following structure: the nut blank that 4 knock-pins that set in order to the mode of surrounding pierce punch replace pierce punches will accomplish after punching and the guide portion expansion operation ejects; Carry out clamping thereby can reliably said nut blank be pressed between two manipulators, can not cause obstacle the handover of said nut blank.
In order to solve said problem; The manufacturing installation of puncture nut of the present invention is to utilize the manufacturing installation of nut upsetter with the puncture nut of the nut blank upsetting pressure shaping of the puncture nut of heavily stressed type; The nut blank of the puncture nut of said heavily stressed type is the guide portion that the middle body that comprises thread Pilot hole of square nut main body is provided with tubular in profile; The end face of the guide portion of said tubular plays a role as the drift that metallic plate is carried out stamping-out; And, being provided with sidewall along the outer peripheral edges of said nut main body, said sidewall is outstanding with the mode of surrounding said guide portion; Between said guide portion and said sidewall, be formed with endless groove; The all side wall surfaces and the said sidewall of the said endless groove of delimitation of said guide portion tilt with respect to axis, thereby said endless groove forms the dovetail groove of depths broad, and the manufacturing installation of said puncture nut is characterised in that; The manufacturing installation of said puncture nut forms following structure: in the upsetting pressure operation; Carry out the punching of said thread Pilot hole, and the application of force expands the end face part of said guide portion and open to radial direction, thereby all side wall surfaces of the said endless groove of delimitation of said guide portion are tilted and enlarge; Utilize 4 knock-pins to eject four jiaos end face of the diagonal of the said nut blank of having accomplished said upsetting pressure operation, and this nut blank is pressed into place between near a pair of manipulator of the connecting gear the end face of forging die.
The upsetting die and the structure of drift that utilize the master operation that the nut upsetter is shaped the upsetting pressure of nut blank in the manufacturing installation that the invention that technical scheme 2 relates to has been confirmed the present invention relates to particularly, the manufacturing installation of said puncture nut by the realization of nut upsetter possesses: the upsetting die of nut blank and drift, the upsetting die and the drift of said nut blank have knock-pin; Said knock-pin is provided in the recess of forging die with the mode of forward-reverse vertically; And said knock-pin is by the spring position application of force of drawing back, and the blank that the recess of said forging die supplies preliminary forming to form inserts, and the 1st tubular inserts is embedded in said knock-pin outward and is fixed and is configured in the deep inside of said recess; End face at said the 1st tubular inserts is provided with circular protrusion; On the other hand, be provided with protuberance at the front end face with the opposed drift of said forging die, said protuberance is used to make the prepared hole of thread Pilot hole to be shaped; The said blank that is inserted into said recess is pushed with the mode that clamps with said drift and said knock-pin; The said prepared hole that does not connect is shaped, and, said circular protrusion is pressed into said blank; In profile is the guide portion that the middle body that comprises said prepared hole of square nut main body is provided with tubular; The end face of said guide portion plays a role as the drift that metallic plate is carried out stamping-out, and, along the outer peripheral edges of said nut main body sidewall is set; Said sidewall is outstanding with the mode of surrounding said guide portion, thereby between said guide portion and said sidewall, has formed endless groove; Punching and guide portion enlarge upsetting die and drift; The structure that said punching and guide portion enlarge upsetting die and drift does; In the recess of the forging die of the subsequent processing that supplies said nut blank to insert, be equipped with pierce punch; Base portion at said pierce punch is provided with abducent tapered wall, and the scarf end face of being located at the 2nd tubular inserts of said pierce punch is provided with circular protrusion outside, and said circular protrusion is used to be inserted into said endless groove; The tubular drift be used for said nut blank be inserted into said subsequent processing forging die recess and push; Through the synergy of said tubular drift and said pierce punch, said prepared hole is carried out punching and thread Pilot hole is shaped, utilize the said tapered wall application of force that the end face part of said guide portion is expanded to radial direction and open; All side wall surfaces of the said endless groove of delimitation of said guide portion are tilted; Thereby said endless groove is formed the dovetail groove of depths broad, and, make said guide portion end face outer peripheral edges and said circular protrusion the medial surface butt and be restricted; And sidewall slope upsetting die and drift; The structure of said sidewall slope upsetting die and drift does; Said sidewall slope upsetting die and drift have knock-pin; Said knock-pin is provided in the mode that can move forward and backward vertically in the recess of forging die of subsequent processing again; And said knock-pin by spring towards the going-back position application of force; Said nut blank after recess confession the having carried out punching of the forging die of said subsequent processing again and guide portion enlarge inserts; Deep inside at said recess is provided with tapered wall, and the said sidewall that said tapered wall is used to make said nut blank is to the axis tilt, and the 3rd tubular inserts is equipped on the bottom of recess of the forging die of said subsequent processing again; End face at said the 3rd tubular inserts is provided with circular protrusion; Said circular protrusion is used to be inserted into said endless groove, when use with the opposed drift of the forging die of said subsequent processing more said nut blank is inserted into said subsequent processing again forging die recess and when pushing, utilize said tapered wall to make said sidewall to the axis tilt; Thereby said endless groove is formed the dovetail groove of depths broad; And, the end face medial margin of the said sidewall that has made to the axis tilt and the lateral surface butt of said circular protrusion and be restricted, the manufacturing installation of said puncture nut is characterised in that; The manufacturing installation of said puncture nut forms following structure: said punching and guide portion enlarge in the recess of upsetting die and the said pierce punch of drift and the forging die that said the 2nd tubular inserts fixedly remains on said subsequent processing; And, be provided with 4 knock-pins with the mode of surrounding said pierce punch, eject with four jiaos the end face of said 4 knock-pins the diagonal of nut blank; This nut blank is pressed into place between near a pair of manipulator of the connecting gear the end face of said forging die, wherein the nut blank through said pierce punch be used for that the synergy of recess and the said tubular drift that pushes that said nut blank is inserted into the forging die of said subsequent processing has been accomplished the punching of said thread Pilot hole and the expansion of said guide portion.
The structure that said punching and the guide portion in the manufacturing installation of the puncture nut that technical scheme 2 relates to enlarges upsetting die and drift has been confirmed in the invention that technical scheme 3 relates to more particularly; It is characterized in that; The structure of the manufacturing installation of said puncture nut is: said pierce punch and said the 2nd tubular inserts are fixed via retainer in the recess of the forging die that remains on said subsequent processing; Said 4 knock-pins separate 90 degree around said pierce punch phase place is installed on said retainer with the mode of forward-reverse vertically; And; Said 4 knock-pins are by the spring position application of force of drawing back, and when said 4 knock-pins were in going-back position, the front end face of said 4 knock-pins was in same with respect to the front end face of said the 2nd tubular inserts; Four jiaos end face butt of the diagonal of said 4 knock-pins and said nut blank ejects said nut blank and be pressed between the said a pair of manipulator when advancing.
As above said clear; Manufacturing installation according to puncture nut of the present invention; When the upsetting pressure of nut blank is shaped, in the upsetting pressure operation, carry out the punching of thread Pilot hole; And with the end face part of guide portion to the radial direction pushing so that its expansion open; Thereby all side wall surfaces that make the said guide portion that delimit endless groove tilt and enlarge, and utilize 4 knock-pins to eject four jiaos end face of the diagonal of the said nut blank of having accomplished said upsetting pressure operation, and said nut blank is pressed into place between near a pair of manipulator of the connecting gear the end face of forging die; Because the manufacturing installation of puncture nut of the present invention forms such structure; Therefore, said nut blank reliably and is swimmingly ejected and by said two manipulator clampings, needn't be worried that the handover of subtend subsequent processing causes obstacle from said forging die.Thereby it is high and can access the square puncture nut of the high-quality heavily stressed type of stable rivet force to produce dimensional accuracy in batches with good efficiency more.
Description of drawings
Fig. 1 is the front view of the nut upsetter major part of expression embodiment of the present invention.
The (a) and (b) of Fig. 2, (c), (d) are the key diagrams that expression utilizes the manufacturing procedure order of the nut blank that said nut upsetter upsetting pressure is shaped.
Fig. 3 is the vertical view of the summary of the nut blank of expression after will processing through each upsetting pressure operation of said nut upsetter the connecting gear that in turn is transplanted on subsequent processing.
Fig. 4 is the front view of the operating state that moved from position shown in Figure 1 of the said connecting gear of expression.
Fig. 5 is that the upsetting die of the state after the expression completion ejects from upsetting die by each upsetting pressure operation of the nut blank of said nut upsetter upsetting pressure shaping and with said nut blank and the major part of drift are laterally cut vertical view open.
Fig. 6 is that expression will be accomplished upsetting die and the major part of drift that nut blank after the main upsetting pressure operation of being undertaken by said nut upsetter is transplanted on the state of subsequent processing respectively and laterally cut vertical view open.
Fig. 7 is that expression is accomplished upsetting die and the major part of drift of state that nut blank after the main upsetting pressure operation of being undertaken by said nut upsetter has been shifted into upsetting die the place ahead of subsequent processing respectively and laterally cut vertical view open.
Fig. 8 is that expression will be accomplished the upsetting die that nut blank after the main upsetting pressure operation of being undertaken by said nut upsetter is transplanted on subsequent processing respectively, and is pushed and the upsetting die midway of upsetting pressure shaping and the major part of drift are laterally cut vertical view open by drift.
Fig. 9 is that expression accomplishes that nut blank after the main upsetting pressure operation of being undertaken by said nut upsetter has been accomplished the upsetting die of the state after the upsetting pressure shaping that upsetting die and drift by subsequent processing carry out respectively and the major part of drift is laterally cut vertical view open.
Figure 10 be the upsetting pressure carried out of expression upsetting die and drift by subsequent processing shown in Figure 9 be shaped accomplish after, the drift of each upsetting pressure operation retreats the upsetting die of the state after mobile with the mode of leaving from upsetting die and the major part of drift is laterally cut vertical view open.
Figure 11 is the punching of said nut upsetter and the major part enlarged front view that guide portion enlarges upsetting die.
The key diagram of Figure 12 state that to be expression will be ejected by the nut blank after the expansion of the punching of the punching of said nut upsetter and guide portion expansion upsetting die and drift completion thread Pilot hole and guide portion with 4 knock-pins.
Figure 13 carries out tapping processing and the stereogram of the square puncture nut accomplished to the nut blank that utilizes apparatus of the present invention to produce.
Figure 14 is that the punching shown in Figure 2 of the special fair 8-29392 communique of Japan and the key diagram that ejects preparation of the nut blank after the guide portion expansion operation are accomplished in expression.
Figure 15 is that expression ejects nut blank shown in Figure 14 from upsetting die, and by the key diagram of the state of the said nut blank of mutual opposed a pair of manipulator clamping of connecting gear.
Label declaration
1: square puncture nut;
2: screwed hole;
10: blank;
11: the nut blank;
11a, 11b, 11c: nut blank;
12: thread Pilot hole;
13: guide portion;
14: sidewall;
15: endless groove;
50: die unit;
51: the preliminary forming forging die;
52: nut blank upsetting die;
53: punching and guide portion enlarge forging die;
54: the sidewall slope upsetting die;
55: connecting gear;
58,58: a pair of manipulator;
59,59: leaf spring;
61: recess (upsetting die 52);
62: knock-pin;
65: the 1 tubular inserts;
66: circular protrusion;
67: drift;
71: recess (upsetting die 53);
72: pierce punch;
73: the 2 tubular inserts;
74: retainer;
75: tapered wall;
76: circular protrusion;
77: knock-pin;
80: the tubular drift;
81: recess (upsetting die 54);
82: knock-pin;
85: tapered wall (recess 81);
86: the 3 tubular inserts;
87: circular protrusion;
88: drift.
The specific embodiment
Below, based on description of drawings embodiment of the present invention.
Fig. 1 representes the major part of 4 segmentation nut upsetters of embodiment of the present invention; Separate the equally spaced horizontal forging die that is assembled with each upsetting pressure operation that the upsetting pressure of nut blank is shaped side by side in edge at die unit 50, that is preliminary forming forging die 51, nut blank upsetting die 52, punching and guide portion enlarge upsetting die 53 and sidewall slope upsetting die 54.In addition; In the preposition operation of preliminary forming forging die 51; Cut off out the material of fixed dimension from coiled material; Correct the end face of said material and supply to preliminary forming forging die 51, the technique device that carries out these operations is the general technique device that standard is equipped with in existing nut upsetter, so omit.
And, be equipped with at the connecting gear that laterally moves back and forth 55 along near the front surface of die unit 50.Because this connecting gear 55 also is the general technique device that standard is equipped with in existing nut upsetter; Therefore; Its detailed description is omitted; But, as shown in figures 1 and 3, at the connecting plate 56 that laterally moves back and forth along near the court front surface of die unit 50; 3 main shafts 57 that extend along the vertical direction are installed; Said 3 main shafts 57 separate and each upsetting die 51～54 between the interval equal spacing and can rotate around axis, at each main shaft 57 can opposed a pair of manipulator 58,58 each other being housed along the state group that laterally moves, through leaf spring 59,59 so that the approaching each other mode of said a pair of manipulator 58,58 to said a pair of manipulator 58,58 application of forces.And; Two manipulators 58,58 that only in Fig. 1, are configured in the place ahead of preliminary forming forging die 51 turn over turnback when as illustrated in fig. 4 the blank behind the preliminary forming 10 being moved to the place ahead of upsetting die 52, and other 2 groups of manipulators 58,58 form along horizontal parallel moving.
The state that the nut blank 11a of each the upsetting pressure operation after Fig. 5 representes to be shaped by said nut upsetter upsetting pressure, 11b, 11c eject and transfer to subsequent processing from each upsetting die 52,53,54 respectively.
Nut blank upsetting die 52 has knock-pin 62; This knock-pin 62 be provided in the recess 61 with the mode of forward-reverse vertically and by spring 63 towards the going-back position application of force; Said recess 61 supplies to be inserted by the blank 10 (with reference to figure 2) that preliminary forming forging die 51 has carried out preparing after upsetting is processed; By the mobile jib 64 that is provided in knock-pin 62 rears, this knock-pin 62 overcomes spring 63 and is ejected.And the outer surface and the fixed configurations that are embedded in knock-pin 62 outside are provided with circular protrusion 66 at the end face of the 1st tubular inserts 65 of the deep inside of recess 61.On the other hand, be provided with the protuberance 68 that the prepared hole that is used to make thread Pilot hole is shaped at the front end face of the drift 67 that is provided with opposed to each other mutually with upsetting die 52.And; Through following manner nut blank 11a upsetting pressure is shaped in (with reference to figure 2): with the mode that clamps the blank 10 that is inserted in recess 61 to be pushed with drift 67 and knock-pin 62; Prepared hole 12a, the 12b of non-through thread Pilot hole are shaped, and, circular protrusion 66 is pressed into blank 10; Middle body at the nut main body that comprises prepared hole 12a is shaped the guide portion 13 of tubular; The end face of the guide portion 13 of said tubular plays a role as the drift that metallic plate is carried out stamping-out, and, make sidewall 14 shapings of giving prominence to parallel axes ground with the mode of surrounding guide portion 13 along the outer peripheral edges of nut main body; And, between guide portion 13 and sidewall 14, form endless groove 15.As shown in Figure 5; After drift 67 is retreated with the mode of leaving from upsetting die 52; With knock-pin 62 so the upsetting pressure nut blank 11a that forms that is shaped eject from upsetting die 52, and said nut blank 11a is pressed into opposed each other a pair of manipulator 58, carries out clamping between 58.
Punching and guide portion enlarge upsetting die 53 and via retainer 74 pierce punch 72 and the 2nd tubular inserts 73 are fixedly remained in the recess 71 that supplies nut blank 11a insertion, and the said second tubular inserts, 73 outer scarves are located at this pierce punch 72.Base portion at pierce punch 72 is provided with abducent tapered wall 75, is provided with circular protrusion 76 at the end face of the 2nd tubular inserts 73, and said circular protrusion 76 is used to be inserted into the endless groove 15 of nut blank 11a.On the other hand, be provided with 4 elongated knock-pins 77 with the mode of surrounding pierce punch 72.Said knock-pin 77 separates the phase configuration around pierce punch 72 (with reference to Figure 11) of 90 degree; Said knock-pin 77 is installed into can connect the 2nd tubular inserts 73 and retainer 74 ground forward-reverse vertically; And; Said knock-pin 77 is by the spring 78 position application of force of drawing back; When said knock-pin 77 was in going-back position, the end face of the front end face of said knock-pin 77 and the 2nd tubular inserts 73 was in same, perhaps the end face than said the 2nd tubular inserts 73 low slightly (with reference to figure 7～10).4 knock-pins 77 overcome spring 78 by the mobile jib 79 that is provided in said 4 knock-pin 77 rears and are forwards ejected.On the other hand, be provided with and upsetting die 53 opposed tubular drifts 80.And; Through following manner nut blank 11b upsetting pressure is shaped: when utilizing tubular drift 80 that nut blank 11a is inserted into recess 71 and pushing, like Fig. 8, shown in Figure 9, through the synergy of tubular drift 80 and pierce punch 72; Prepared hole 12a, 12b are carried out punching and thread Pilot hole 12 is shaped; And, the tapered wall 75 of utilizing pierce punch 72 towards the end face part of radial direction pushing guide portion 13 so that the end face part of said guide portion 13 expands opens, thereby all side wall surfaces of the guide portion 13 that delimit endless groove 15 are tilted with respect to axis; The cross sectional shape of endless groove 15 is formed the dovetail groove of depths broad; And, the end face outer peripheral edges of guide portion 13 and the medial surface butt of circular protrusion 76 and be restricted, thus excessive inclination and distortion stoped; Thus, the inside dimensions of the end face external diameter of guide portion 13 that is endless groove 15 is fixed dimension accurately by fine finishining.At this moment, the blinking scrap sheet 12c that is got off by pierce punch 72 stamping-outs is accommodated in the tube hole of tubular drift 80 and discharges.For the nut blank 11b that upsetting pressure so is shaped and forms, shown in figure 10, tubular drift 80 is retreated with the mode of leaving from upsetting die 53, a pair of manipulator 58,58 of connecting gear 55 is moved near the front surface of upsetting die 53.Then, as shown in Figure 5, utilize mobile jib 79 to overcome spring 78 4 knock-pins 77 are ejected, four jiaos end face butt of the diagonal of said 4 knock-pins 77 and nut blank 11b, thus this nut blank 11b is ejected from the recess 71 of upsetting die 53.When so ejecting nut blank 11b with 4 knock-pins 77; This nut blank 11b is ejected along axis direction exactly; Therefore; This nut blank 11b is by smooth and easy and eject and can not interfere with pierce punch 72 from recess 71 reliably, and said nut blank 11b is pressed into opposed each other a pair of manipulator 58, carries out clamping between 58.
Sidewall slope upsetting die 54 has knock-pin 82; Said knock-pin 82 is provided in the recess 81 with the mode of forward-reverse vertically; And said knock-pin 82 is by the spring 83 position application of force of drawing back; Nut blank 11b after the punching of said recess 81 confessions having carried out thread Pilot hole 12 and the expansion of guide portion 13 inserts, and by the mobile jib 84 that is provided in knock-pin 82 rears, said knock-pin 82 overcomes spring 83 and ejected.And, being provided with tapered wall 85 in the deep inside of recess 81, said tapered wall 85 makes the sidewall 14 of nut blank 11b to the axis tilt.And; Be embedded in knock-pin 82 outside and the end face of the 3rd tubular inserts 86 of the deep inside that is configured in recess 81 of being fixed is provided with circular protrusion 87; Said circular protrusion 87 and tapered wall 85 are mutually opposed and have fixed intervals, and said circular protrusion 87 is used to be inserted into the endless groove 15 of nut blank 11b.On the other hand, be provided with and upsetting die 54 opposed drifts 88.And, when the nut blank 11b that utilizes 88 pairs of drifts to be inserted in the recess 81 of upsetting die 54 pushes (with reference to figure 8～9), as shown in Figure 9; Circular protrusion 87 at the 3rd tubular inserts 86 is inserted under the state of endless groove 15, makes sidewall 14 to the axis tilt through tapered wall 85, and the interior sidewall surface 17 of delimiting endless groove 15 is tilted with respect to axis; Thereby the cross sectional shape of endless groove 15 is formed the dovetail groove of depths broad; And, the inboard ora terminalis of the sidewall 14 after the inclination and the lateral surface butt of circular protrusion 87 and be restricted, thus excessive inclination and distortion stoped; Thus, the side dimension of endless groove 15 is fixed dimension accurately by fine finishining.Shown in figure 10; After drift 88 is retreated with the mode of leaving from upsetting die 54; As shown in Figure 5; Utilize knock-pin 82 will be so to eject from the recess 81 of upsetting die 54 by the be shaped nut blank 11c that forms of sidewall slope upsetting die 54 upsetting pressures, said nut blank 11c freely fall and by conveyance to not shown tapping operation.
Figure 13 is illustrated in the be shaped thread Pilot hole 12 of the nut blank 11c form of upsetting pressure as described above to carry out tapping processing and accomplishes the square puncture nut 1 of the heavily stressed type behind the internal thread 2.
Claims (3)
1. the manufacturing installation of the nut that punctures; The manufacturing installation of said puncture nut utilizes the nut upsetter that nut blank (11) upsetting pressure of the puncture nut (1) of heavily stressed type is shaped; The nut blank (11) of the puncture nut (1) of said heavily stressed type is the guide portion (13) that the middle body that comprises thread Pilot hole (12) of square nut main body is provided with tubular in profile; The end face of the guide portion (13) of said tubular plays a role as the drift that metallic plate is carried out stamping-out, and the outer peripheral edges of the said nut main body in edge are provided with sidewall (14); Said sidewall (14) is outstanding with the mode of surrounding said guide portion (13); Between said guide portion (13) and said sidewall (14), be formed with endless groove (15), all side wall surfaces of the said endless groove of delimitation (15) of said guide portion (13) and said sidewall (14) tilt with respect to axis, thereby said endless groove (15) forms the dovetail groove of depths broad; The manufacturing installation of said puncture nut is characterised in that
The manufacturing installation of said puncture nut forms following structure: in the upsetting pressure operation; Carry out the punching of said thread Pilot hole (12); And the application of force is opened the end face part of said guide portion (13) to the radial direction expansion; Thereby all side wall surfaces that make the said endless groove of delimitation (15) of said guide portion (13) tilt and enlarge; Utilize 4 knock-pins (77) to eject four jiaos end face of the diagonal of accomplishing the said nut blank (11b) after the said upsetting pressure operation, and this nut blank (11b) is pressed into place between near a pair of manipulator (58,58) of the connecting gear the end face of forging die (53).
2. the manufacturing installation of the nut that punctures, the manufacturing installation of said puncture nut utilize the nut upsetter to realize that the manufacturing installation of said puncture nut has:
The upsetting die of nut blank (11a) and drift (52,67); The upsetting die of said nut blank (11a) and drift (52,67) have knock-pin (62); Said knock-pin (62) is provided in the recess (61) of forging die (52) with the mode of forward-reverse vertically; And said knock-pin (62) is by spring (63) the position application of force of drawing back, and the blank (11a) that the recess (61) of said forging die (52) supplies preliminary forming to form inserts, and the 1st tubular inserts (65) is outer to be embedded in said knock-pin (62) and the fixed configurations deep inside in said recess (61); End face at said the 1st tubular inserts (65) is provided with circular protrusion (66); On the other hand, be provided with protuberance (68) at the front end face with the opposed drift of said forging die (52) (67), said protuberance (68) is used to make the prepared hole (12b) of thread Pilot hole (12) to be shaped; The said blank (11a) that is inserted in said recess (61) is pushed with the mode that clamps with said drift (67) and said knock-pin (62); The said prepared hole (12a, 12b) that does not connect is shaped, and, said circular protrusion (66) is pressed into said blank (10); In profile is the guide portion (13) that the middle body that comprises said prepared hole (12a) of square nut main body is provided with tubular; The end face of the guide portion (13) of said tubular plays a role as the drift that metallic plate is carried out stamping-out, and the outer peripheral edges of the said nut main body in edge are provided with sidewall (14); Said sidewall (14) is outstanding with the mode of surrounding said guide portion (13), thereby between said guide portion (13) and said sidewall (14), has formed endless groove (15);
Punching and guide portion enlarge upsetting die and drift (53,80); The structure that said punching and guide portion enlarge upsetting die and drift (53,80) does; Pierce punch (72) is provided in the recess (71) of the forging die (53) that supplies the subsequent processing that said nut blank (11a) inserts; Base portion at said pierce punch (72) is provided with abducent tapered wall (75); The scarf end face of being located at the 2nd tubular inserts (73) of said pierce punch (72) is provided with circular protrusion (76) outside; Said circular protrusion (76) is used to be inserted into said endless groove (15), tubular drift (80) be used for said nut blank (11a) be inserted into said subsequent processing forging die (53) recess (71) and push, through the synergy of said tubular drift (80) and said pierce punch (72); Said prepared hole (12a, 12b) is carried out punching and thread Pilot hole (12) is shaped; Utilize said tapered wall (75) application of force that the end face part of said guide portion (13) is expanded to radial direction and open, all side wall surfaces of the said endless groove of delimitation (15) of said guide portion (13) are tilted, thereby said endless groove (15) is formed the dovetail groove of depths broad; And, make said guide portion (13) end face outer peripheral edges and said circular protrusion (76) the medial surface butt and be restricted; And
Sidewall (14) inclination upsetting die and drift (54,88); The structure of said sidewall (14) inclination upsetting die and drift (54,88) does; Said sidewall (14) inclination upsetting die and drift (54,88) have knock-pin (82); Said knock-pin (82) is provided in the mode of forward-reverse vertically in the recess (81) of forging die (54) of subsequent processing again; And said knock-pin (82) is by spring (83) the position application of force of drawing back; Said nut blank (11b) after recess (81) confession the having carried out punching of the forging die of said subsequent processing again (54) and guide portion (13) enlarge inserts; Deep inside at said recess (81) is provided with tapered wall (85), and said tapered wall (85) makes the said sidewall (14) of said nut blank (11b) to the axis tilt, and the 3rd tubular inserts (86) is equipped on the bottom of recess (81) of the forging die (54) of said subsequent processing again; End face at said the 3rd tubular inserts (86) is provided with circular protrusion (87); Said circular protrusion (87) is used to be inserted into said endless groove (15), when use the opposed drift of forging die (54) (88) with said subsequent processing again said nut blank (11b) is inserted into said subsequent processing again forging die (54) recess (81) and when pushing, utilize said tapered wall (85) to make said sidewall (14) to the axis tilt; Thereby said endless groove (15) is formed the dovetail groove of depths broad; And, the end face medial margin of the said sidewall (14) that has made towards the axis tilt and the lateral surface butt of said circular protrusion (87) and be restricted
The manufacturing installation of said puncture nut is characterised in that,
The manufacturing installation of said puncture nut forms following structure: said pierce punch (72) and said the 2nd tubular inserts (73) that said punching and guide portion enlarge upsetting die and drift (53,80) is fixed in the recess (71) of the forging die (53) that remains on said subsequent processing; And; Be provided with 4 knock-pins (77) with the mode of surrounding said pierce punch (72); Eject with four jiaos the end face of said 4 knock-pins (77) the diagonal of nut blank (11b); This nut blank (11b) is pressed into place between near a pair of manipulator (58,58) of the connecting gear the end face in said forging die (53), wherein nut blank (11b) through said pierce punch (72) and the recess (71) and the synergy of the said tubular drift (80) that pushes that are used for said nut blank (11a) is inserted into the forging die (53) of said subsequent processing accomplished the punching of said thread Pilot hole (12) and the expansion of said guide portion (13).
3. the manufacturing installation of puncture nut as claimed in claim 2 is characterized in that,
The structure of the manufacturing installation of said puncture nut is:
Said pierce punch (72) and said the 2nd tubular inserts (73) are fixed via retainer (74) in the recess (71) of the forging die (53) that remains on said subsequent processing,
Said 4 knock-pins (77) separate 90 degree around said pierce punch (72) phase place is installed on said retainer (74) with the mode of forward-reverse vertically; And; Said 4 knock-pins (77) are by spring (78) the position application of force of drawing back; When said 4 knock-pins (77) when being in going-back position; The front end face of said 4 knock-pins (77) is in same with respect to the front end face of said the 2nd tubular inserts (73); When said 4 knock-pins (77) when advancing, four jiaos end face butt of said 4 knock-pins (77) and the diagonal of said nut blank (11b) ejects said nut blank (11b) and be pressed between the said a pair of manipulator (58,58).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-126919 | 2011-06-07 | ||
| JP2011126919A JP5325934B2 (en) | 2011-06-07 | 2011-06-07 | Piercing nut manufacturing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102814455A true CN102814455A (en) | 2012-12-12 |
Family
ID=46207907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101866089A Pending CN102814455A (en) | 2011-06-07 | 2012-06-07 | Pierce nut manufacturing apparatus |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20120316001A1 (en) |
| EP (1) | EP2532455B1 (en) |
| JP (1) | JP5325934B2 (en) |
| CN (1) | CN102814455A (en) |
| TW (1) | TWI520798B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103111518A (en) * | 2013-01-28 | 2013-05-22 | 苏州工业园区新凯精密五金有限公司 | Filature square punching blanking fundamental mould structure |
| CN103264118A (en) * | 2013-04-22 | 2013-08-28 | 台州鼎耀自动化设备有限公司 | Nut blank forming device and nut blank forming method |
| CN104128494A (en) * | 2014-06-24 | 2014-11-05 | 芜湖求精紧固件有限公司 | Internal hexagonal die |
| CN105312482A (en) * | 2014-07-01 | 2016-02-10 | 有限会社新城制作所 | Apparatus to produce self-piercing and clinch nut and method for producing self-piercing and clinch nut |
| CN106040956A (en) * | 2015-04-14 | 2016-10-26 | 有限会社新城控股 | Apparatus to produce self-piercing and clinch nut and method of producing self-piercing and clinch nut |
| CN111085640A (en) * | 2019-12-02 | 2020-05-01 | 山东九佳紧固件股份有限公司 | Cold heading production process of combined nut blank |
| CN112570609A (en) * | 2020-12-11 | 2021-03-30 | 江苏保捷锻压有限公司 | Forging process of inner straight hole piece |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5818232B1 (en) * | 2015-04-14 | 2015-11-18 | 有限会社新城製作所 | Piercing nut manufacturing apparatus and piercing nut manufacturing method |
| JP5822043B1 (en) * | 2015-04-14 | 2015-11-24 | 有限会社新城製作所 | Piercing nut manufacturing apparatus and piercing nut manufacturing method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB462150A (en) * | 1935-04-30 | 1937-03-03 | Elastic Stop Nut Corp | Improvements in or relating to the manufacture of self-locking nuts |
| GB482330A (en) * | 1936-09-05 | 1938-03-28 | William Cecil Denison Junior | Improvements in or relating to the manufacture of nuts or like metallic articles |
| GB613034A (en) * | 1944-12-19 | 1948-11-22 | Waterbury Farrel Foundry Co | Improvements in or relating to method and machine for making a nut blank |
| JPS56111541A (en) * | 1980-02-05 | 1981-09-03 | Daihatsu Motor Co Ltd | Production of projection nut |
| JPS6458807A (en) * | 1987-08-27 | 1989-03-06 | Shinjo Seisakusho Kk | Pierce nut |
| JPH06134628A (en) * | 1992-07-22 | 1994-05-17 | Shinjiyou Seisakusho:Yugen | Automatic assembling device for pierce nut |
| CN1109393A (en) * | 1993-12-17 | 1995-10-04 | 新城制作所有限公司 | Apparatus for making self-piercing nuts |
| CN101618498A (en) * | 2009-07-17 | 2010-01-06 | 宁波安拓实业有限公司 | Manufacturing process of adjusting nut |
| CN101722404A (en) * | 2008-10-23 | 2010-06-09 | 有限会社新城制作所 | Manufacturing method of weld nut made of stainless steel plate and blanking punch used in its manufacturing method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3124876A (en) * | 1964-03-17 | Method of forming cupped articles | ||
| US2207391A (en) * | 1939-05-27 | 1940-07-09 | Waterbury Farrel Foundry Co | Means and method of making nut blanks |
| JPS5085562A (en) * | 1973-11-29 | 1975-07-10 | ||
| JPH01138034A (en) * | 1987-11-25 | 1989-05-30 | Honda Motor Co Ltd | Manufacture of stepped hollow gear |
| US7314417B2 (en) * | 2000-03-31 | 2008-01-01 | Profil Verbindungstechnik Gmbh & Co. Kg | Method for the manufacture of hollow body elements, hollow body element and also progressive tool for carrying out the method |
| US7367893B2 (en) * | 2005-05-05 | 2008-05-06 | Whitesell International Corporation | Fastener manufacturing apparatus and method |
-
2011
- 2011-06-07 JP JP2011126919A patent/JP5325934B2/en active Active
-
2012
- 2012-04-25 US US13/455,161 patent/US20120316001A1/en not_active Abandoned
- 2012-05-16 TW TW101117398A patent/TWI520798B/en not_active IP Right Cessation
- 2012-06-07 CN CN2012101866089A patent/CN102814455A/en active Pending
- 2012-06-07 EP EP12171181.6A patent/EP2532455B1/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB462150A (en) * | 1935-04-30 | 1937-03-03 | Elastic Stop Nut Corp | Improvements in or relating to the manufacture of self-locking nuts |
| GB482330A (en) * | 1936-09-05 | 1938-03-28 | William Cecil Denison Junior | Improvements in or relating to the manufacture of nuts or like metallic articles |
| GB613034A (en) * | 1944-12-19 | 1948-11-22 | Waterbury Farrel Foundry Co | Improvements in or relating to method and machine for making a nut blank |
| JPS56111541A (en) * | 1980-02-05 | 1981-09-03 | Daihatsu Motor Co Ltd | Production of projection nut |
| JPS6458807A (en) * | 1987-08-27 | 1989-03-06 | Shinjo Seisakusho Kk | Pierce nut |
| JPH06134628A (en) * | 1992-07-22 | 1994-05-17 | Shinjiyou Seisakusho:Yugen | Automatic assembling device for pierce nut |
| CN1109393A (en) * | 1993-12-17 | 1995-10-04 | 新城制作所有限公司 | Apparatus for making self-piercing nuts |
| CN101722404A (en) * | 2008-10-23 | 2010-06-09 | 有限会社新城制作所 | Manufacturing method of weld nut made of stainless steel plate and blanking punch used in its manufacturing method |
| CN101618498A (en) * | 2009-07-17 | 2010-01-06 | 宁波安拓实业有限公司 | Manufacturing process of adjusting nut |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103111518A (en) * | 2013-01-28 | 2013-05-22 | 苏州工业园区新凯精密五金有限公司 | Filature square punching blanking fundamental mould structure |
| CN103264118A (en) * | 2013-04-22 | 2013-08-28 | 台州鼎耀自动化设备有限公司 | Nut blank forming device and nut blank forming method |
| CN103264118B (en) * | 2013-04-22 | 2015-08-26 | 台州鼎耀自动化设备有限公司 | A kind of nut blank shaped device and blank forming method thereof |
| CN104128494A (en) * | 2014-06-24 | 2014-11-05 | 芜湖求精紧固件有限公司 | Internal hexagonal die |
| CN105312482A (en) * | 2014-07-01 | 2016-02-10 | 有限会社新城制作所 | Apparatus to produce self-piercing and clinch nut and method for producing self-piercing and clinch nut |
| CN105312482B (en) * | 2014-07-01 | 2018-07-03 | 有限会社新城控股 | The method for manufacturing the device of self-pierce riveting nut and manufacturing self-pierce riveting nut |
| CN106040956A (en) * | 2015-04-14 | 2016-10-26 | 有限会社新城控股 | Apparatus to produce self-piercing and clinch nut and method of producing self-piercing and clinch nut |
| CN106040956B (en) * | 2015-04-14 | 2018-03-30 | 有限会社新城控股 | Rush from the manufacture device for rushing nut and certainly the manufacture method of nut |
| CN111085640A (en) * | 2019-12-02 | 2020-05-01 | 山东九佳紧固件股份有限公司 | Cold heading production process of combined nut blank |
| CN111085640B (en) * | 2019-12-02 | 2021-05-07 | 山东九佳紧固件股份有限公司 | Cold heading production process of combined nut blank |
| CN112570609A (en) * | 2020-12-11 | 2021-03-30 | 江苏保捷锻压有限公司 | Forging process of inner straight hole piece |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201313360A (en) | 2013-04-01 |
| EP2532455A1 (en) | 2012-12-12 |
| EP2532455B1 (en) | 2014-11-26 |
| TWI520798B (en) | 2016-02-11 |
| JP5325934B2 (en) | 2013-10-23 |
| JP2012250279A (en) | 2012-12-20 |
| US20120316001A1 (en) | 2012-12-13 |
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Application publication date: 20121212 |