CN1161888A - Reducing-extrusion processing method and apparatus thereof - Google Patents
Reducing-extrusion processing method and apparatus thereof Download PDFInfo
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- CN1161888A CN1161888A CN 96102827 CN96102827A CN1161888A CN 1161888 A CN1161888 A CN 1161888A CN 96102827 CN96102827 CN 96102827 CN 96102827 A CN96102827 A CN 96102827A CN 1161888 A CN1161888 A CN 1161888A
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- 238000001125 extrusion Methods 0.000 title claims description 159
- 230000007246 mechanism Effects 0.000 claims description 45
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- 238000012937 correction Methods 0.000 claims description 28
- 230000003014 reinforcing effect Effects 0.000 description 31
- 230000003028 elevating effect Effects 0.000 description 17
- 238000000034 method Methods 0.000 description 14
- 238000009415 formwork Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 7
- 238000007781 pre-processing Methods 0.000 description 7
- 230000007423 decrease Effects 0.000 description 3
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- 238000009966 trimming Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
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Abstract
The present invention relates to a reducing squeezing processing method and its equipment. It is characterized by that a bar-like workpiece can be moved axially by the action of guiding component, and can be inserted into its squeezing die, and when the workpiece is inclined relatively to the reducing squeezing die, the inclination can be corrected to its acceptable range so as to ensure that the workpiece can be accurately inserted into the squeezing die.
Description
What the present invention relates to is that bar-shaped workpiece is by ways supporting and processing method and processing unit (plant) mobile vertically, that insertion diameter reducing extrusion mould carries out diameter reducing extrusion processing.
Relevant for the existing diameter reducing extrusion processing unit (plant) of this respect as shown in Figure 4.This diameter reducing extrusion processing unit (plant) 1 is as the device that the threaded portion Wn of bolt W is carried out preprocessing, but it includes dynamic model 2 and diameter reducing extrusion mould 4, but dynamic model 2 is supporting the bottom WK of bolt W in to bolt W guiding; And diameter reducing extrusion mould 4 Wn of double thread portion carry out preprocessing.
In aforementioned diameter reducing extrusion mould 4, formed the shoulder (not shown) of the threaded portion Wn of diameter reducing extrusion bolt W, 4 one-tenth two sections central authorities that are piled up the reinforcing ring 5 that is fixed on slightly to become tubular of diameter reducing extrusion mould.And reinforcing ring 5 places the inside of tubular formwork 8, and the flange portion 5f of this reinforcing ring 5 is clamped vertically and located with this by formwork 8 and pressuring template 6 simultaneously.
But dynamic model 2 is a kind of structures that can slide in formwork 8 at the upside of reinforcing ring 5, its central authorities and the diameter reducing extrusion mould 4 coaxial aperture portion 2K that formed the bottom WK of bolt W.Here, the internal diameter of aperture portion 2K be set at the external diameter of the bottom WK of bolt W about equally.In addition, but fixing a pair of resilient pegs 2r that extends out along glide direction in the lower end of dynamic model 2, these resilient pegs 2r has passed the pilot hole 5h that forms on the reinforcing ring 5.Besides, the coaxial elastic plate 2e that fixing in the lower end of resilient pegs 2r, elastic plate 2e place the recess 6h that forms on the pressuring template 6 slidably.
In recess 6h, adorned according to its elastic force can on push away the spring (not shown) of elastic plate 2e, rely on the elastic force of spring, but dynamic model 2 pushed to resilient pegs 2r, make elastic plate 2e remain on following contacted position with reinforcing ring 5.
Also have, be provided with workpiece knock pin 9 below pressuring template 6, this sells 9 from the central openings 6K that the central authorities of below feeding pressuring template 6 form, and then inserts in the diameter reducing extrusion mould 4.
For the threaded portion Wn with 1 couple of bolt W of diameter reducing extrusion processing unit (plant) carries out diameter reducing extrusion processing, shown in Fig. 4 (A), but under the state of 12 jiaos of trimming punch 7C that the head of bolt W embedded elevating mechanism 7, make the aperture portion 2K of the feeding dynamic models 2 such as a bottom WK of this bolt W, bolt W is inserted in the diameter reducing extrusion mould 4.From then on elevating mechanism is descended the position, shown in Fig. 4 (B), owing to overcome the elastic force of spring but bolt W is pushed away downwards with dynamic model 2, the threaded portion Wn of bolt W promptly carries out diameter reducing extrusion processing by the extruding shoulder, thereby has carried out the preprocessing of the Wn of double thread portion.The one diameter reducing extrusion process finishing as bolt W, elevating mechanism 7 rises, and by workpiece knock pin 9 bolt W is ejected from diameter reducing extrusion mould 4.
In above-mentioned so existing diameter reducing extrusion processing unit (plant) 1, when being positioned by 4 couples of bolt W of diameter reducing extrusion mould, but dynamic model 2 leaves from diameter reducing extrusion mould 4 and carries out diameter reducing extrusion and process necessary distance H.Therefore, shown in Fig. 4 (C), under the situation of the diameter of the Wt of the tension portion the sort of bolt littler,, produced the gap between the wall of aperture portion 2K and the Wt of tension portion, often run-off the straight of bolt W as the Wt of tension portion during by aperture portion 2K than the diameter of a bottom WK etc.Particularly for horizontal type diameter reducing extrusion processing unit (plant) 1, because the gravity effect, bolt W is easy to generate inclination.When this inclination surpassed permissible range, the lower end of bolt W contacted with the top of diameter reducing extrusion mould 4, and the fault of diameter reducing extrusion mould 4 can take place to insert well.
But technical task of the present invention promptly is to produce the gap between the aperture portion of dynamic model and bolt, under the situation that bolt produces to the diameter reducing extrusion mould, the tilt correction of bolt in permissible range, is guaranteed that bolt inserts in the diameter reducing extrusion mould.
Above-mentioned this problem is to be solved by the diameter reducing extrusion processing method with following feature.
The diameter reducing extrusion processing method of the present invention's first scheme.That is, bar-shaped workpiece is led by ways and moves vertically, inserts the diameter reducing extrusion mould and carry out diameter reducing extrusion processing; In such processing method, under the situation that workpiece tilts to the diameter reducing extrusion mould, the tilt correction of workpiece in permissible range, and is inserted the diameter reducing extrusion mould; Here so-called permissible range refers to that promptly workpiece can insert the slant range of diameter reducing extrusion mould.
As according to the present invention, because workpiece is when having inclination to the diameter reducing extrusion mould, can be in permissible range with the tilt correction of workpiece.Insert the diameter reducing extrusion mould so can guarantee workpiece.
As according to the present invention, insert in the diameter reducing extrusion mould owing to can guarantee workpiece, so can prevent to insert the generation of the bad fault that causes because of workpiece.
The diameter reducing extrusion processing method of alternative plan of the present invention.That is, with workpiece by with the bellmouth of the coaxial setting of diameter reducing extrusion mould, workpiece to diameter reducing extrusion mould tilt correction in permissible range.
As according to the present invention, even workpiece has inclination to the diameter reducing extrusion mould, but workpiece vertically in the moving process lower end of workpiece be that wall along bellmouth moves, so the center of the axle center of workpiece and diameter reducing extrusion mould coincides, workpiece tilts to be revised, and guarantees that workpiece inserts in the diameter reducing extrusion mould.
As according to the present invention, owing to be the inclination of workpiece that utilized the bellmouth correction, so can make simplified.
The diameter reducing extrusion processing method of third party's case of the present invention, that is, the internal diameter reducing mechanism of workpiece quilt and the coaxial setting of diameter reducing extrusion mould is limited from radial direction, with workpiece to the tilt correction of diameter reducing extrusion mould in permissible range.
As according to the present invention, at first be internal diameter in the internal diameter reducing mechanism than the big state of the external diameter of workpiece under, make workpiece import the diameter reducing extrusion mould by ways and internal diameter reducing mechanism; Then the internal diameter of internal diameter reducing mechanism is reduced to the workpiece external diameter about equally, with the position of internal diameter reducing mechanism the axle center of workpiece and the center of diameter reducing extrusion mould are coincided; That is, even workpiece has inclination to the diameter reducing extrusion mould, the position of dependence internal diameter reducing mechanism also can be with the tilt correction of workpiece.
As according to the present invention, because the position of internal diameter reducing mechanism can make the axle center of workpiece and the center of diameter reducing extrusion mould coincide, thereby the part of workpiece lower end in the aforementioned method of utilizing bellmouth and the friction of bellmouth have been eliminated, so can prevent the damage of workpiece.
The diameter reducing extrusion processing method of the present invention's the 4th scheme.That is, the setting of the spacing between ways and the diameter reducing extrusion mould is roughly zero, revises workpiece tilting within the permissible range the diameter reducing extrusion mould.
As according to the present invention owing to make that the spacing between ways and the diameter reducing extrusion mould is zero, even workpiece has inclination to the diameter reducing extrusion mould, when workpiece by ways that the time also can insert the diameter reducing extrusion mould automatically.
As according to the present invention,, ways and diameter reducing extrusion intermode workpiece can be imported the insertion mouth of diameter reducing extrusion mould because need not being provided with new member, so can prevent that locking apparatus is complicated.
The diameter reducing extrusion processing method of claim 5.That is be the work mounting s length setting of ways can be, with workpiece to the tilt correction of the diameter reducing extrusion mould length in the permissible range.
As according to the present invention, because workpiece passes through ways, so workpiece tilts can be adapted within the permissible range automatically.
As according to the present invention,,, can avoid the complicated of device so ways and diameter reducing extrusion intermode need not be provided with new member because workpiece its inclination in by the ways process is revised.
The diameter reducing extrusion processing method of the present invention's the 6th scheme, that is, when implementing to comprise in the processing unit (plant) of this processing method diameter reducing extrusion mould that bar-shaped workpiece is carried out diameter reducing extrusion processing and workpiece being imported the diameter reducing extrusion mould to the ways of workpiece guiding; Be provided with correction mechanism in this processing unit (plant), when workpiece had inclination to the diameter reducing extrusion mould, it can be with the tilt correction of workpiece within the permissible range.
As according to the present invention and since be provided with correction mechanism with workpiece to the tilt correction of diameter reducing extrusion mould within the permissible range, workpiece can guarantee that its workpiece that imports the diameter reducing extrusion mould inserts mouthful after by ways.Promptly can implement the invention of the method that the present invention's first scheme records and narrates according to device of the present invention.
As according to the present invention, can obtain the effect same of the invention recorded and narrated with the present invention's first scheme.
The drawing simple declaration
The skiagraph of Fig. 1-expression the present invention the 1st embodiment diameter reducing extrusion processing unit (plant) and processing method,
The skiagraph of Fig. 2-expression the present invention the 2nd embodiment diameter reducing extrusion processing unit (plant) and processing method,
The skiagraph of Fig. 3-expression the present invention the 3rd embodiment diameter reducing extrusion processing unit (plant) and processing method,
Fig. 4-existing diameter reducing extrusion processing unit (plant) and processing method skiagraph.
Embodiment
Below be described in Figure diameter reducing extrusion processing unit (plant) and the diameter reducing extrusion processing method of relevant the present invention the 1st embodiment.
The diameter reducing extrusion processing unit (plant) of present embodiment is the preprocessing device of the threaded portion Wn of bolt W.It has comprised the bottom W of bolt W
kBut but dynamic model 12 and the Wn of the double thread portion diameter reducing extrusion mould 14 that carries out preprocessing and dynamic model 12 and 14 of diameter reducing extrusion moulds revise the correction mechanisms 13 that bolt W tilts.In addition, by the bolt W that the diameter reducing extrusion device 10 of present embodiment is processed, the external diameter of the Wt of its tension portion is made all littler than the external diameter of a bottom Wk and threaded portion Wn.
On diameter reducing extrusion mould 14, formed the shoulder 14r of the threaded portion Wn of diameter reducing extrusion bolt W, the central authorities that 14 one-tenth two sections overlap conditions of mould are fixed in the reinforcing ring 15 that slightly becomes tubular.Reinforcing ring 15 then places in the tubular formwork 18, and the flange portion 15f of reinforcing ring 15 is then clamped vertically and located by formwork 18 and pressuring template 16 simultaneously.
The 1st resilient pegs 13r extends out along the glide direction of guide ring 13a, passes the 1st pilot hole 15h that forms on the reinforcing ring 15.And in the lower end of the 1st resilient pegs 13r coaxial the 1st elastic plate 13e that fixing, the 1st elastic plate 13e places on the pressuring template 16 the 1st recess 16h that forms slidably.
Adorning the 1st spring 16m in the inside of the 1st recess 16h, its elastic force can be pushed the 1st elastic plate 13e to top.Elastic force by the 1st spring 16m can be pushed to guide ring 13a with the 1st resilient pegs 13r, and the 1st elastic plate 13e is remained on the following position [with reference to Fig. 1 (A)] that faces reinforcing ring 15.
But aforementioned dynamic model 12 is the mechanism that the upside at correction mechanism 13 can slide in formwork 18, has formed the aperture portion 12K coaxial with diameter reducing extrusion mould 14 in the central.Aperture portion 12K also plays a part the bottom Wk of bolt W in to bolt W guiding.Its internal diameter be set at the external diameter of the bottom WK of bolt W about equally.In addition, but fixing the 2nd resilient pegs 12r that extends out along glide direction in the lower end of dynamic model 12, the 2nd resilient pegs 12r passes the 2nd pilot hole 15j that forms on the reinforcing ring 15.In addition, coaxial the 2nd elastic plate 12e that fixing in the lower end of the 2nd resilient pegs 12r, the 2nd elastic plate 12e are loaded among the 2nd recess 16j that forms on the pressuring template 16 slidably.Can play the ways effect in the present invention by dynamic model 12.
The 2nd spring 16n that packs in aforementioned the 2nd recess 16j, its elastic force can be able to be pushed to the 2nd elastic plate 12e.But rely on the elastic force of the 2nd spring 16n to push to dynamic model 12 with the 2nd resilient pegs 12r, and the 2nd elastic plate 12e is remained on following contacted position [with reference to Fig. 1 (A)] with reinforcing ring 15.
In addition, be provided with workpiece knock pin 19 below pressuring template 16, the central openings 16K that this workpiece knock pin 19 forms by the central authorities of elastic plate 16 from the below passes the inside of diameter reducing extrusion mould 14.
Bottom illustrates the diameter reducing extrusion processing method of relevant present embodiment based on (A)-(D) of Fig. 1.
At first, (A) is represented for image pattern 1, elevating mechanism 17 descends, be installed in threaded portion Wh, the Wt of tension portion of the bolt W on 12 jiaos of trimming punch 17C of this elevating mechanism 17, but a bottom Wk feeds the bellmouth 13t of the guide ring 13a formation of correction mechanism 13 from the peristome 12k of dynamic model 12.Here, but the internal diameter of the aperture portion 12k of dynamic model 12 be set at the external diameter of the bottom Wk of bolt W about equally.For this reason, but when the tension portion Wt also littler than the bottom Wk diameter of bolt W passes the aperture portion 12k of dynamic model 12, produced the gap between Wt of tension portion and aperture portion 12k.Just, but when the Wt of tension portion of bolt W passes the aperture portion 12k of dynamic model 12,, bolt W gives same guide effect from radius but no longer including the aperture portion 12k of dynamic model 12, thereby often diameter reducing extrusion mould 14 generation inclinations relatively.But even tilt bolt, the lower end of bolt W can be moved along the wall of the bellmouth 13t of guide ring 13a in the process that bolt W descends, according to this, (B) is represented for image pattern 1, and the inclination of bolt W is corrected, and the lower end of bolt W guarantees to import among the diameter reducing extrusion mould 14.
Continue to descend from this state elevating mechanism 17, shown in Fig. 1 (c), when the threaded portion Wn of bolt W pushes diameter reducing extrusion mould 14, but the bottom Wk of bolt W injects the aperture portion 12K of dynamic model 12.Thus, but bolt W by dynamic model 12 and diameter reducing extrusion mould 14 it is limited at radial direction.At this state, because the continuation of elevating mechanism descends, bolt W is down pushed away with dynamic model 12 but elevating mechanism 17 overcomes the elastic force of the 2nd spring 16n, the elastic force that overcomes the 1st spring 16m again pushes away the guide ring 13a of correction mechanism 13 downwards.Shown in Fig. 1 (D), the threaded portion Wn of bolt W has promptly passed through the shoulder 14r of diameter reducing extrusion mould 14, has carried out diameter reducing extrusion processing, finishes the preprocessing of threaded portion Wn.
At this moment one works as process finishing, and elevating mechanism 17 rises, and then workpiece knock pin 19 is about to bolt W and ejects from diameter reducing extrusion mould 14.
Like this, in the present embodiment since adopted make bolt W by with the bellmouth of diameter reducing extrusion mould 14 coaxial settings the tilt correction of bolt this method in the permissible range, can guarantee that bolt W inserts in the diameter reducing extrusion mould 14.Thereby can prevent because bolt inserts the fault that unfavorable condition causes.In addition, owing to be to utilize bellmouth 13t to revise the method for the inclination of bolt W, can prevent that device is complicated.
The 2nd embodiment
Following diameter reducing extrusion processing unit (plant) and processing method of borrowing Fig. 2 that relevant the present invention the 2nd embodiment is described.
The diameter reducing extrusion processing unit (plant) 20 of present embodiment has used the correction mechanism 13 with bellmouth 13t and has used internal diameter reducing mechanism 23 with respect to the processing unit (plant) 10 of embodiment 1.
Internal diameter reducing mechanism 23 is the external diameter mechanisms about equally that can be reduced to the internal diameter to the pilot hole 23j of bolt W guiding with the Wt of tension portion of bolt W.Internal diameter reducing mechanism 23 and the 24 coaxial settings of diameter reducing extrusion mould, it by conical ring 23b with constitute with the conical ring 23b interlock and the divided mould 23n etc. that can reduce the internal diameter of pilot hole 23j.
Aforementioned conical ring 23b to be placing formwork 28 with diameter reducing extrusion mould 24 coaxial positioning states, but can slide up and down in dynamic model 22 and 25 of reinforcing rings in formwork 28.In addition, the following upper end with the 1st spring 26m of conical ring 23b contacts, and the 1st spring 26m places in reinforcing ring 25 and the pressuring template 26, can upwards shift upper limit position onto according to the elastic force of the 1st spring 26m.
In addition, below being provided with on the medial surface 23t of conical ring 23b, become the taper hole of minor diameter, insert in this medial surface 23t (to call conical surface 23t in the following text) and can divide mould 23n.
The aforementioned mould 23n that can divide is divided into the mould of four structure to rounding taper type mould in circumferencial direction, and its central portion has formed pilot hole 23j.In addition, this can divide the taper seat of mould 23n to contact with the conical surface 23t one-tenth face of conical ring 23b.Thus, when when the state shown in Fig. 2 (A) can divide mould 23n to move down, each module that can divide mould 23n is because the slip effect of conical surface 23t and taper seat, and in medial movement, thereby reduced the internal diameter of pilot hole 23j.With this, the external diameter of the internal diameter of the pilot hole 23j behind feasible the reducing and the Wt of tension portion of bolt W about equally.Can divide mould 23n above but dynamic model 22 is housed, but can divide mould 23n to relatively move along radial direction to dynamic model 22.
Can divide mould 23n supporting from bottom by the support rod 23r that is arranged on the reinforcing ring 25.
Support rod 23r is located parallel with diameter reducing extrusion mould 24 by the pilot hole 25h of reinforcing ring 25, the elastic plate 23e of ring-type is being fixed in its lower end.Elastic plate 23e places in the recess 26h that the central authorities of pressuring template 26 form slidably, is upwards being pushed away by recessed the 2nd spring 26n that is placed in the 26h simultaneously.That is, can divide mould 23n to push away on it by the 2nd spring 26n, under the situation that does not add external force, be positioned at the upper end of conical ring 23b by support rod 23r, elastic plate 23e.Thus, the internal diameter of pilot hole 23j remains on maximum rating.
Bottom, the diameter reducing extrusion processing method of borrowing Fig. 2 (A)-(C) explanation present embodiment.
At first shown in Fig. 2 (A), but the threaded portion Wn of bolt W, the Wt of tension portion, a bottom Wk feed the pilot hole 23j of internal diameter reducing mechanism 23 from the aperture portion 22K of dynamic model 22.Here, because the divided mould 23n of internal diameter reducing mechanism 23 is in upper limit position, the internal diameter of pilot hole 23j enlarges have been left, but its bottom of bolt W Wk by the aperture portion 22K supporting of dynamic model 22, and the Wt of tension portion is provided with restriction at radial direction.And in this case, bolt W is being supported from the below by workpiece knock pin 29.
At this moment, elevating mechanism 27 descends, the head of the drift 27P pushing bolt W of elevating mechanism 27, and bolt W and workpiece knock pin 29 descend, but dynamic model 22 pushes away downwards with the elastic force that can divide mould 23n to overcome the 2nd spring 26n simultaneously.But at this moment aforementioned cone-shaped 23b is positioned upper limit position by the elastic force of the 1st spring 26m, can divide the relative conical ring 23b of mould 23n and descends.With this, each module that can divide mould 23n is because the conical surface 23t of its relative conical ring 23b and the slip effect that can divide the taper seat of mould 23n move to the inside along radial direction, and shown in Fig. 2 (B), the internal diameter of pilot hole 23j reduces.According to this, the Wt of tension portion of bolt W is by dividing mould 23n to be limited from radial direction.Here, because aforementioned pilot hole 23j and the 24 coaxial settings of diameter reducing extrusion mould, owing to reducing of pilot hole 23j internal diameter, even bolt W tilts, the axle center of bolt W also is compelled to coincide with the center of diameter reducing extrusion mould 24.
State elevating mechanism 27 further descends thus, but dynamic model 22 contact with the top of conical ring 23b, but bolt W and workpiece knock pin 29 dynamic models 22, the elastic force that can divide mould 23n and conical ring 23b then to overcome the 1st spring 26m, the 2nd spring 26n push away downwards.Rely on these, the threaded portion Wn of bolt W inserts in the diameter reducing extrusion mould 24, carries out diameter reducing extrusion processing, promptly implements the preprocessing of the Wn of double thread portion.Processing one finishes, and lifting structure 27 rises, and by workpiece knock pin 29 bolt W is ejected diameter reducing extrusion mould 24.
Like this, as according to present embodiment, because the effect of internal diameter reducing mechanism 23, from radial direction the center of bolt W and diameter reducing extrusion mould 24 is coincided, use bellmouth 13t as embodiment 1, the wall friction with bellmouth 13t that the lower end of bolt W causes when inserting guide ring 13 has not had, thereby can prevent bolt W damaged.
The 3rd embodiment
Below borrow Fig. 3 that diameter reducing extrusion processing unit (plant) and its processing method of the 3rd embodiment are illustrated.
The diameter reducing extrusion processing unit (plant) 30 of present embodiment, processing unit (plant) with respect to the 1st, the 2nd embodiment has used correction mechanism 13, internal diameter reducing mechanism 23 etc., but the spacing that it is designed between diameter reducing extrusion mould 34 liftable dynamic models 32 and the diameter reducing extrusion mould 34 is roughly zero.According to this, but after the threaded portion Wn of bolt W passes the aperture portion 32K of dynamic model 32, can directly insert the inside of diameter reducing extrusion mould 34.
But aforementioned dynamic model 32 is cylindrical structural members that lid is arranged at top, and the middle body of its lid forms aperture portion 32K.But dynamic model 32 can slide up and down to put in the tubular formwork 38.But, fixing the 2nd resilient pegs 32r that extends out along glide direction, and the 2nd resilient pegs 32r passes the 2nd pilot hole 35j of the reinforcing ring 35 that will mention the back and the 3rd pilot hole 36j of pressuring template 36 in the lower end of dynamic model 32.Besides, coaxially in the lower end of the 2nd resilient pegs 32r fixing the 2nd elastic plate 32e, and the 2nd elastic plate 32e places the 2nd recess 36y that forms on the pressuring template 36 slidably.In addition, in the 2nd recess 36y, adorning can its elastic force can on push away the 2nd spring 36n of elastic plate 32e.The elastic force of the 2nd spring 36n thus, but aforementioned dynamic model 32 upwards can be pushed away and remain on upper limit position.
34 fens three sections central authorities that are piled up the reinforcing ring 35 that is fixed on slightly to become tubular of aforementioned diameter reducing extrusion mould, but and this reinforcing ring 35 can slide up and down to be loaded in the dynamic model 32.In addition, the bottom of reinforcing ring 35 is provided with flange portion 35f, and flange portion 35f can slide up and down in formwork 38.And but flange portion 35f can not hinder reinforcing ring 35 to slide up and down in dynamic model 32.Fixing the 1st resilient pegs 35r that extends out along glide direction in the lower end of flange portion 35f, the 1st resilient pegs 35r passes the 1st pilot hole 36h that forms on the pressuring template 36.Coaxially in the lower end of the 1st resilient pegs 35r fixing the 1st elastic plate 35e, and the 1st recess 36x that the 1st elastic plate 35e packs into slidably and forms on the pressuring template 36.In addition, the 1st spring 36m is also being adorned in the inside of the 1st recess 36x, can the 1st elastic plate 35e can be pushed to by the elastic force of the 1st spring 36m.Rely on the elastic force of the 1st spring 36m that aforementioned reinforcing ring 35 is pushed to, but make the contacted position of cap that keeps above it with dynamic model 32.
Bottom is illustrated the diameter reducing extrusion processing method of present embodiment according to Fig. 3 (A)-(D).As previously mentioned, but dynamic model 32 is positioned upper limit position according to elastic force, the reinforcing ring 35 of the 2nd spring 36n according to the elastic force of the 1st spring 36m, but reinforcing ring 35 is contacted with the cap of dynamic model 32.For this reason, shown in Fig. 3 (A), but the diameter reducing extrusion mould 34 of the aperture portion 32K that forms on the cap of dynamic model 32 and the central authorities of being fixed in reinforcing ring 35 substantially mutually in succession.
At this moment, but the threaded portion Wn of bolt W, the Wt of tension portion feed diameter reducing extrusion mould 34 by the aperture portion 32K of dynamic model 32.Here, because aperture portion 32K is connected substantially with diameter reducing extrusion mould 34,, the threaded portion Wn of bolt W is inserted in the diameter reducing extrusion mould 34 automatically no matter how bolt W tilts to diameter reducing extrusion mould 34.
Then, elevating mechanism 37 descends, and the head of the drift 37P pushing bolt W of elevating mechanism 37 pushes bolt W in the diameter reducing extrusion mould 34.At this moment, owing to set the elastic force of the 1st spring 36m littler than diameter reducing extrusion operating force, shown in Fig. 3 (B), diameter reducing extrusion mould 34 is pushed down with the elastic force that reinforcing ring 35 overcomes the 1st spring 36m.Then, but the bottom Wk of bolt W inserts the aperture portion 32K of dynamic model 32, but because the head of bolt W contact dynamic model 32, but bolt W is pushed downwards together with the elastic force that dynamic model 32 overcomes the 2nd spring 36n.
Like this, at first be reinforcing ring 35 following and pressuring template 36 above contact, diameter reducing extrusion mould 34 stops at once with the decline of reinforcing ring 35.Then, elevating mechanism 37 is continued to descend by this state, but dynamic model 32 also continues decline with bolt W, and the threaded portion Wn of bolt W promptly pushes in the diameter reducing extrusion mould 34, carries out the diameter reducing extrusion processing as Fig. 3 (C) is represented.Again, but the cap of rotating ring 32 contact with the top of reinforcing ring 35, but the decline of rotating ring 32 stops the diameter reducing extrusion process finishing.Diameter reducing extrusion processing one finishes, and the head of bolt W promptly is pressed into 12 jiaos of trimming punch 37f on the elevating mechanism 37, forms 12 angles.At this moment, processing is all over, and elevating mechanism 37 rises, and by workpiece knock pin 39 bolt W is ejected from diameter reducing extrusion mould 34.
Like this according to present embodiment, but 34 of dynamic model 32 and diameter reducing extrusion moulds are no longer established new member, thereby needn't will install complicated for bolt W is imported diameter reducing extrusion mould 34.
Moreover, in the present embodiment, but make dynamic model 32 and 34 spacings of diameter reducing extrusion mould be roughly zero in the initial period of diameter reducing extrusion processing, and work in-process to make its spacing on the way be that zero method also may be used.In addition, but even the spacing of 34 of dynamic model 32 and diameter reducing extrusion moulds non-vanishing, but since axial width that will dynamic model 32 increase, but also might be in the inclination of the aperture portion 32K of dynamic model 32 correction bolt W.That is, the gradient of workpiece is adapted to length in the permissible range, all might realizes present technique as the work mounting s Design of length of ways is become.
In addition, in embodiment 1-3, longitudinal type diameter reducing extrusion processing unit (plant) has been described, has set up for lateral type diameter reducing extrusion processing unit (plant) is same certainly.
Claims (6)
1. diameter reducing extrusion processing method, promptly, bar-shaped workpiece is by the ways guiding and move vertically, insert the diameter reducing extrusion mould carries out the diameter reducing extrusion method for processing, it is characterized in that: in this processing method, when workpiece produces to the diameter reducing extrusion mould, the tilt correction of workpiece in permissible range, is inserted it into the diameter reducing extrusion mould.
2. by the described diameter reducing extrusion processing method of claim 1, it is characterized in that: make workpiece by with the bellmouth of the coaxial setting of diameter reducing extrusion mould, with workpiece to the tilt correction of diameter reducing extrusion mould within the permissible range.
3. by the described diameter reducing extrusion processing method of claim 1, it is characterized in that: by internal diameter reducing mechanism workpiece is limited along radial direction with the coaxial setting of diameter reducing extrusion mould, with workpiece to the tilt correction of above-mentioned diameter reducing extrusion mould within the permissible range.
4. by the described diameter reducing extrusion processing method of claim 1, it is characterized in that: it is zero that the spacing of ways and diameter reducing extrusion intermode is set for several exhaling, with workpiece to the tilt correction of diameter reducing extrusion mould within the permissible range.
5. by the described diameter reducing extrusion processing method of claim 1, it is characterized in that: the work mounting s length setting of ways for can be with the tilt correction of the relative diameter reducing extrusion mould of the workpiece length in the permissible range.
6. diameter reducing extrusion processing unit (plant), it has comprised the ways that when bar-shaped workpiece carried out the diameter reducing extrusion mould of diameter reducing extrusion processing and above-mentioned workpiece imported the diameter reducing extrusion mould workpiece is led, it is characterized in that: in this processing unit (plant), be provided with correction mechanism, when the run-off the straight of the relative diameter reducing extrusion mould of workpiece, it can be the tilt correction of workpiece within the permissible range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96102827A CN1064284C (en) | 1996-04-10 | 1996-04-10 | Reducing-extrusion processing method and apparatus thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96102827A CN1064284C (en) | 1996-04-10 | 1996-04-10 | Reducing-extrusion processing method and apparatus thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN1161888A true CN1161888A (en) | 1997-10-15 |
| CN1064284C CN1064284C (en) | 2001-04-11 |
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| CN96102827A Expired - Fee Related CN1064284C (en) | 1996-04-10 | 1996-04-10 | Reducing-extrusion processing method and apparatus thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115722626A (en) * | 2022-11-29 | 2023-03-03 | 中国第一重型机械股份公司 | Combined step extrusion die and forming method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2210107A (en) * | 1937-04-16 | 1940-08-06 | Stewart Warner Corp | Method of making lubricant receiving fittings |
| US3247534A (en) * | 1963-03-13 | 1966-04-26 | Nat Machinery Co | Scrapless heading |
| US3269000A (en) * | 1964-09-17 | 1966-08-30 | Gregory Ind Inc | Method and apparatus for making end weldable studs |
-
1996
- 1996-04-10 CN CN96102827A patent/CN1064284C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115722626A (en) * | 2022-11-29 | 2023-03-03 | 中国第一重型机械股份公司 | Combined step extrusion die and forming method |
| CN115722626B (en) * | 2022-11-29 | 2024-03-26 | 中国第一重型机械股份公司 | Combined step extrusion die and forming method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1064284C (en) | 2001-04-11 |
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