CN205183631U - Thread rolling forming die in short -tail rivet - Google Patents
Thread rolling forming die in short -tail rivet Download PDFInfo
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- CN205183631U CN205183631U CN201521048684.9U CN201521048684U CN205183631U CN 205183631 U CN205183631 U CN 205183631U CN 201521048684 U CN201521048684 U CN 201521048684U CN 205183631 U CN205183631 U CN 205183631U
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Abstract
Thread rolling forming die in short -tail rivet, movable mould or cover half are from last locking mould, screw mould and tail tooth mould under to on the thread rolling machine. Three mould is length L1 < L3 < the L2 at leading -in angle foremost, < alpha 2 for the leading -in angle alpha 1 < alpha 3 of both sides face, the biggest mould breadth is Y1, Y2, Y3 and Y3 is not less than Y2. The end has to take off expects angle beta. Each section mould height is not less than locking section, screw thread section, the tail dental length of short -tail rivet. Screw thread mould front end has the facet, upward acute angle etc. Is got rid of by chamfer, lead angle, the biggest mould breadth department. During the thread rolling, blank is moving, is pushing between the cover half, along moving mold shaft to moving backward, and crowded locking section, tail tooth, screw section sequentially in leading -in angular length degree. Advance to the complete three -section screw thread of length L2 department vertical shaping at the beginning as blank, before the inclined plane time, accomplish vertical all the screw thread shaping of circumference to taking off the material until blank. Compare with 1 or 3 current thread rolling machine technology, efficiency improves 20 times more than and. The realization saves time, laborsaving, save labour. And there are optimization performances such as processing is had good positioning, the screw does not collapse the tooth, the junction does not have the burr. Can satisfy the mass production demand.
Description
(1) technical field:
The utility model relates to a kind of processing screw thread technology of securing member pulling rivet.Belong to intermetallic composite coating slotting class (B23D).
(2) background technology:
Existing short-tail rivet finished product 5 on railroad train, automobile, its profile is shown in Fig. 1, nail bar has three sections of screw threads from top to bottom: rivet with the collar 5.4 the locking section 5.1, thread segment 5.2, the tail tooth 5.3 that extrude and lock.In Fig. 1, ailhead is 5.5, is 5.6 by riveted plating, riveting machine claw 5.7, riveting machine overcoat 5.8.Thread segment rear end face is taper seat 5.21, and during riveted joint during riveting machine claw clamping rivet point tooth, taper seat 5.21 is located for claw.Also locate for claw 5.31 sections, tail tooth upper end.Slightly wide at the bottom of the 5.31 sections of teeth in general tail tooth upper end, referred to herein as section 5.31 at the bottom of the wide tooth of tail tooth.Such as: rivet specification 16mm, widen 0.15mm at the bottom of tooth, now at the bottom of the wide tooth of tail tooth, section 5.31 length is 4.67 ± 0.15.Different model product size is provided by design drawing.
Existing short-tail rivet screw thread shapes method two kinds: 1) establish three screw-rolling machines: First fills tail tooth thread rolling die, the second platform fills screw thread thread rolling die, and the 3rd platform fills locking slot thread rolling die; Operate throwing tail tooth → throwing screw thread → throwing locking slot respectively by 3 people, 3 people are responsible for every section of rolled thread and change station disassemble and assemble work simultaneously.2) screw-rolling machine is established, 3 secondary thread rolling dies: by 1 people's disassembling, assembling and replacing thread rolling die 3 times, process 3 times: throwing tail tooth → throwing screw thread → throwing locking slot completes three sections of rolled thread processing.Such forming technology is time-consuming, require great effort, take a lot of work, efficiency is low, and hold facility is many, cannot meet production demand.
(3) summary of the invention:
The short-tail rivet that the utility model provides thread rolling mould, its objective is solve short-tail rivet existing screw thread forming technology time-consuming, require great effort, take a lot of work, the low problem that cannot meet production demand of efficiency.
Technical scheme is as follows:
Short-tail rivet thread rolling mould, comprising: the dynamic model in thread rolling machine, cover half, workpiece position, feeding guide, material-pulling device; It is characterized in that:
Described dynamic model 6 or cover half 7 all have identical the locking mould, die and the tail tooth mould that connect in turn from top to bottom: locking mould 1: long L foremost
1interior two sides angle is that locking imports angle α
1.Rearmost end two sides angle is de-material angle β; The widest is locking Mould Breadth Y
1, the locking segment length L of height Z1 and short-tail rivet 5
5.1equal.
Die 2: long L foremost
2interior two sides angle is that screw thread imports angle α
2.Two sides highest point has facet 2.1, has upper chamfering 2.2; Die has lead angle θ, and die rearmost end two sides angle is de-material angle β; Die is the widest is the screw thread Mould Breadth Y of middle-end
2, and have the seamed edge removing acute angle; Die height Z
2equal the thread segment length L of short-tail rivet
5.2with facet 2.1 height h2.1 sum.
Tail tooth mould 3: long L foremost
3interior two sides angle is that tail tooth imports angle α
3; Rearmost end two sides angle is de-material angle β; The widest is locking Mould Breadth Y
3; Tail tooth mould height Z3 is greater than the tail dental length L of short-tail rivet
2.3; Processing tooth 3.1 at the bottom of the wide tooth of band chamfering is established in tail tooth mould upper end.
Above-mentioned α
1< α
3< α
2; L
1< L
3< L
2;
Above-mentioned Design of Moulds optimization range is as follows:
α
1≤0.5°、α
2≤1.5°、α
3≤1.5°。Y
3≮Y
2。Facet height h2.1=(0.3 ~ 1) mm.Upper chamfering 2.2=0.5 × 45 °.Lead angle θ=arctanP/ π d, in formula, d is selected major diameter of thread, and P is selected tooth distance.De-material angle β gets 10 °.
The utility model beneficial effect:
1) existing throwing tail tooth → throwing screw thread → throwing locking slot three technique, each rolled thread process need about 10 seconds, completing a short-tail rivet at least needs 30 seconds, within 1 minute, can only process 2.The utility model thread rolling is shaping, within 1 minute, can process more than 40, working (machining) efficiency improve 20 times and more than.
2) the utility model one-shot forming thread rolling process operator labour intensity is little, and pilot process does not have the de-material of workpiece, changes station, refills the operations such as folder and time, saves time, laborsaving, saving of labor.
3) the utility model thread rolling mould parameter designing adopts α 1 < α 3 < α 2; L1 < L3 < L2, the importing length L1 in the locking mould 1 of namely first shaping rivet locking section screw thread is the shortest, imports angle α 1 minimum (see Fig. 4), ensures shaping locking section 5.1 at first, can locate in advance.Such design make workpiece enter start to extrude in mould time, guarantee can not have a down dip at self gravitation, causes random button.Though it is simultaneously extruded that the utility model is the dissimilar screw thread of a workpiece upper, middle and lower three kinds, if the length of mould and highly permission, may be used for realizing more eurypalynous screw thread by the utility model thread rolling technology simultaneously extruded.
4) thread rolling mould parameter designing adopts Y3 ≮ Y2, and tail tooth mould 3 is played a supportive role, and can prevent screw thread in processing from collapsing tooth.
5) die: establish screw thread Mould Breadth to remove acute angle seamed edge, can prevent screw thread in processing from collapsing tooth.If facet 2.1, ensure locking section 5.1 and thread segment 5.2 joining place impulse-free robustness.If upper chamfering 2.2 can prevent screw thread edge screw thread in processing from collapsing tooth.Lead angle θ ensures to process thread segment (θ is provided by product drawing size).
6) there is processing tooth 3.1 (see Figure 12) at the bottom of the wide tooth of band chamfering tail tooth mould upper end, can process section 5.31 at the bottom of the wide tooth of thread segment lower end taper seat 5.21 and tail tooth upper end, in order to ensure riveting machine claw location (see Fig. 1).
(4) accompanying drawing illustrates:
Short-tail rivet finished product 5 front view after Fig. 1 riveted joint.
Fig. 2 dynamic model 6 or cover half 7 assemble schematic diagram (depicting workpiece short-tail rivet blank 4 in figure).
Fig. 3 is the B-B sectional view in Fig. 2.(Z-Y face).
Fig. 4 is the A in Fig. 2
1-A
1sectional view, namely locks mould 1 top view (X-Y plane).
Fig. 5 is the vertical view cutaway drawing (X-Y plane) of blank 4 before importing angular length degree end position B in Fig. 2.
Fig. 6 be in Fig. 2 blank 4 having extruded the vertical view cutaway drawing (X-Y plane) before waiting to enter de-material incline position C.
Fig. 7 is the A in Fig. 2
2-A
2sectional view, i.e. die 2 top view (X-Y plane).(at importing angular length degree extrusion position).
Fig. 8 is the M direction view in Fig. 7.I.e. die 2 front view (Z-X face).
Fig. 9 is local I enlarged drawing in Fig. 8.I.e. die 2 front view (Z-X face) foremost.
Figure 10 is N direction view in Fig. 9.I.e. die 2 end view (Z-Y face) foremost.
Figure 11 is the A in Fig. 2
3-A
3sectional view, i.e. tail tooth mould 3 top view (X-Y plane).(at importing angular length degree extrusion position).
Figure 12 is N direction view in Figure 11.I.e. tail tooth mould 3 end view (Z-Y face) foremost.
Figure 13 thread rolling machine 8 top view (X-Y plane).Comprise dynamic model, cover half, feeding guide, feeding device etc.
Figure 14 is local II enlarged drawing in Figure 13.
(5) detailed description of the invention:
The present embodiment short-tail rivet thread rolling mould:
Comprise and see Figure 13, thread rolling machine 8 is provided with the dynamic model 6 and cover half 7 arranged along Y-direction, and spacing is between the two workpiece position 8.1.Dynamic model is driven by the connecting rod 8.2 that flywheel is housed and moves relative to cover half in X direction.Cover half lock-screw is fixed on thread rolling machine 8 base.See Figure 13,14, set oblique feeding guide 8.4 in porch, workpiece position 8.1, it discharges short-tail rivet blank 4.See Figure 14, there is the material-pulling device of pushing sheet 8.5 and backgauge sheet 8.6 feeding guide 8.4 front end.
See Fig. 2, described dynamic model 6 or cover half 7 all have identical the locking mould 1, die 2 and the tail tooth mould 3 that are connected and fixed in turn from top to bottom.
Locking mould 1: see Fig. 4, foremost long L
1interior two sides angle is that locking imports angle α
1.Rearmost end two sides angle is de-material angle β.The widest is locking Mould Breadth Y
1(Y
1fig. 3 can be seen) simultaneously.See the locking segment length L of short-tail rivet 5 in height Z1 and Fig. 1 in Fig. 2
5.1equal.
Die 2: see Fig. 7, foremost long L
2interior two sides angle is that screw thread imports angle α
2.See Figure 10, Fig. 9, two sides highest point has facet 2.1, has upper chamfering 2.2.See Fig. 9, die has lead angle θ, and namely between cross-section center line horizontal plane and bottom surface, variable angle is lead angle θ in X direction, in order to realize processing screw thread.See Fig. 7, die rearmost end two sides angle is de-material angle β.See Fig. 7, Fig. 3, die is the widest is the screw thread Mould Breadth Y of middle-end
2, have the seamed edge removing acute angle, and screw thread is more close to lower surface, more sharply, intensity is lower.More need to remove sharp edge.See die height Z in Fig. 2
2equal the thread segment length L of short-tail rivet in Fig. 1
5.2with facet in Figure 10 2.1 height h2.1 sum, i.e. Z
2=L
5.2+ h2.1.
Tail tooth mould 3: see Figure 11, foremost long L
3interior two sides angle is that tail tooth imports angle α
3; Rearmost end two sides angle is de-material angle β; The widest is locking Mould Breadth Y
3(Y
3fig. 3 can be seen) simultaneously.See that in Fig. 2, tail tooth mould height Z3 is greater than the tail dental length L of short-tail rivet in Fig. 1
2.3.If tail tooth mould height is too low, heat treatment can be out of shape, and intensity is also not enough.See Fig. 1, tail tooth 5.3 has section 5.31 at the bottom of the wide tooth of tail tooth also to locate for riveting machine claw topmost.See Figure 12, tail tooth mould 3 upper end is provided with processing tooth 3.1 at the bottom of the wide tooth of band chamfering, just can squeeze out section 5.31 (see Fig. 1) at the bottom of taper seat 5.21 and the wide tooth of tail tooth.
Above-mentioned design parameter value condition and scope as follows:
Above-mentioned α
1< α
3< α
2; L
1< L
3< L
2(see Fig. 4, Fig. 7 and Figure 11).
α
1≤0.5°、α
2≤1.5°、α
3≤1.5°。(see Fig. 4, Fig. 7 and Figure 11).
Y
3≮ Y
2; (see Fig. 3).Facet height h2.1=(0.3 ~ 1) mm.(see Figure 10).
Upper chamfering 2.2=0.5 × 45 °; (see Figure 10).
Lead angle θ=arctanP/ π d, in formula, d is selected major diameter of thread, and P is selected tooth distance.(see Fig. 9).
De-material angle β gets 10 °.(see Fig. 4, Fig. 7 and Figure 11) angle is larger, and de-material stroke is shorter.
L
1, L
2, L
3length is chosen by dynamic model 6 or cover half 7 overall length.Y
1, Y
2, Y
3width is arranged by thread rolling machine 8 width and is chosen.
The present embodiment uses above-mentioned short-tail rivet thread rolling mould to realize the shaping method of a short-tail rivet thread rolling, has the following steps:
1) pre-install:
Locking mould 1 in Fig. 4, Fig. 7, Figure 11, die 2 and tail tooth mould 3 are filled from top to bottom in turn as the dynamic model 6 in Fig. 2, Fig. 3 or cover half 7, and during thread rolling machine 8 is in fig. 13 installed respectively both sides, workpiece position 8.1 dynamic plate side and determine plate side, debug and fix mould.
Feeding process: see Figure 13, workpiece 4 transfers to gradient guide rail 8.4 through thread rolling machine 8 feed mechanism, and workpiece is reach under deadweight, by feeding tooth on guide rail one by one feeding to backgauge sheet 8.6, when dynamic model 6 move to cover half 7 import port part time, pushing sheet 8.5 synchronization action, pushes working position 8.1 workpiece.
2) thread rolling 1 step:
See Fig. 4, dynamic model 6 along X shift-in cutter forward, the counter-clockwise rotation of rivet blank 4, importing the length L1 at angle, L2, L3 scope class first to extrude in Fig. 2 rivet blank 4 section of locking 4.1 (because L1 is the shortest, α 1 is minimum), secondly extruding blank tail tooth 4.3, finally extrudes blank thread segment 4.2.
3) thread rolling 2 step and shaping:
See Fig. 5, Fig. 6, dynamic model 6, along X to continuation reach feed, moves after semi-finished product blank 4 and imports on angular length degree L2 end position B at dynamic model 6, starts the extruding of all screw threads from here and reaches depth capacity, starts vertical shaping complete screw thread locking, screw thread, tail tooth; Until to Fig. 6 de-material front position, inclined-plane C, in this section, semi-finished product blank 4 continues counter-clockwise rotation, arc length 4a circumference reach after thread rolling; Dynamic model 6, along X to continuation reach feed extruding, makes the blank in Zhou Xianghou mono-section of arc length 4b be shaped to upper, middle and lower three sections of screw threads 5.1,5.2,5.3 (see Fig. 1), in a girth, namely completes the vertical all screw thread moldings of circumference, carry out integer subsequently.
4) de-material: see Fig. 6, dynamic model 6 continues in X direction to moving forward to dynamic model de-material inclined-plane 6.1 and cover half de-material inclined-plane 7.1 place, and because there being the existence at de-material angle, the gap between dynamic model, cover half increases gradually, until workpiece comes off.
Claims (2)
1. short-tail rivet thread rolling mould, comprising: the dynamic model in thread rolling machine, cover half, workpiece position, feeding guide, material-pulling device; It is characterized in that:
Described dynamic model (6) or cover half (7) all have identical the locking mould, die and the tail tooth mould that connect in turn from top to bottom;
Locking mould (1): long L foremost
1interior two sides angle is that locking imports angle α
1, rearmost end two sides angle is de-material angle β; The widest is locking Mould Breadth Y
1, the locking segment length L of height Z1 and short-tail rivet (5)
5.1equal;
Die (2): long L foremost
2interior two sides angle is that screw thread imports angle α
2, two sides highest point has facet (2.1), has upper chamfering (2.2); Die has lead angle θ, and die rearmost end two sides angle is de-material angle β; Die is the widest is the screw thread Mould Breadth Y of middle-end
2, and have the seamed edge removing acute angle; Die height Z
2equal the thread segment length L of short-tail rivet
5.2with facet (2.1) height h2.1 sum;
Tail tooth mould (3): long L foremost
3interior two sides angle is that tail tooth imports angle α
3; Rearmost end two sides angle is de-material angle β; The widest is locking Mould Breadth Y
3; Tail tooth mould height Z3 is greater than the tail dental length L of short-tail rivet
2.3; Processing tooth (3.1) at the bottom of the wide tooth of band chamfering is established in tail tooth mould upper end;
Above-mentioned α
1< α
3< α
2; L
1< L
3< L
2.
2., by short-tail rivet according to claim 1 thread rolling mould, it is characterized in that: design parameter value condition and scope as follows:
α
1≤0.5°、α
2≤1.5°、α
3≤1.5°；Y
3≮Y
2；
Facet height h2.1=(0.3 ~ 1) mm; Upper chamfering 2.2=0.5 × 45 °;
Lead angle θ=arctanP/ π d, in formula, d is selected major diameter of thread, and P is selected tooth distance;
De-material angle β gets 10 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521048684.9U CN205183631U (en) | 2015-12-15 | 2015-12-15 | Thread rolling forming die in short -tail rivet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521048684.9U CN205183631U (en) | 2015-12-15 | 2015-12-15 | Thread rolling forming die in short -tail rivet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205183631U true CN205183631U (en) | 2016-04-27 |
Family
ID=55776662
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521048684.9U Active CN205183631U (en) | 2015-12-15 | 2015-12-15 | Thread rolling forming die in short -tail rivet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107378145A (en) * | 2017-09-15 | 2017-11-24 | 宏茂五金(昆山)有限公司 | Flat cup Antisliding bolt bar portion annular knurl and thread rolling machine |
-
2015
- 2015-12-15 CN CN201521048684.9U patent/CN205183631U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107378145A (en) * | 2017-09-15 | 2017-11-24 | 宏茂五金(昆山)有限公司 | Flat cup Antisliding bolt bar portion annular knurl and thread rolling machine |
| CN107378145B (en) * | 2017-09-15 | 2024-05-28 | 宏茂五金(昆山)有限公司 | Knurling and thread rolling device for rod part of anti-skid bolt of flat cup |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 620032, No. two, 821, Science Park, Dongpo District, Sichuan, Meishan Patentee after: Meishan Zhongche fastener Technology Co. Ltd. Address before: 620032, No. two, 821, Science Park, Dongpo District, Sichuan, Meishan Patentee before: Meishan CSR Fastener Science&technology Co., Ltd. |