CN100554712C - Manufacturing is used for the equipment of outer ring member of constant velocity joint and the middle formed body of method and outer ring member - Google Patents
Manufacturing is used for the equipment of outer ring member of constant velocity joint and the middle formed body of method and outer ring member Download PDFInfo
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- CN100554712C CN100554712C CNB2006800015195A CN200680001519A CN100554712C CN 100554712 C CN100554712 C CN 100554712C CN B2006800015195 A CNB2006800015195 A CN B2006800015195A CN 200680001519 A CN200680001519 A CN 200680001519A CN 100554712 C CN100554712 C CN 100554712C
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Abstract
The present invention relates to make the equipment of the outer ring member that is used for constant velocity joint and the middle formed body of method and outer ring member.This equipment is included in that the outer circumferential face at an end place of second drift (44) forms: shaping platform (50), and the cross section of this shaping platform forms the circular shape with predetermined bend radius; Release portion (52), this release portion and described shaping platform portion (50) are continuous; And correction unit (54), this correction unit and described release portion (52) are continuously and greater than the external diameter of described release portion (52), and described second drift is used for forming the hole in the bar portion (36) by bar portion forming section (38) drawing.The entire portion of the shaping platform portion (50) of described second drift (44) forms and is positioned at bar portion forming section (38) along between the upper end (F1) and lower end (F2) on the Vertical direction of the through hole (40) of counterdie (24).
Description
Technical field
The present invention relates to a kind of outer ring member that is used to transmit the constant velocity joint of rotary driving force, relate more specifically to equipment and method that a kind of manufacturing is used for the outer ring member of constant velocity joint, and a kind of described outer ring member that is used for constant velocity joint in the middle of (moulding) body that is shaped, this outer ring member has by forging at a plurality of steering channels that form on the internal surface of cup portion and the sawtooth that forms on the internal surface of bar portion (shank).
Background technique
Up to now, normally fill the chamber that forms by the upper die and lower die that are engaged with each other, apply press power by drift to forged material then, thereby generate the outer ring member (outer glass) of the constant velocity joint that for example is used to drive automotive wheel with forged material.
Outer ring member comprises tubulose cup portion and the bar portion integrally formed with this glass portion.This glass portion has three the axially extended rail slots (trackgroove) that limit with along the interval that circumferentially equates on the side face within it, thereby roller can be arranged in rail slot and roll along rail slot.
The outer ring member of Shi Yonging has and integrally formed bar portion of cup portion usually traditionally, and (protrusion type bar portion (male type shank)) axially stretches out from an end of cup portion in this bar portion.On the other hand, also produce recess-type bar portion (female type shank) recently, form porose in this bar portion and extended axially sawtooth on the side face within it.The interior sawtooth of bar portion engages with the sawtooth of the running shaft of box of tricks.
Such when being used for the outer ring member of constant velocity joint when making, must in a step, form the axially extended rail slot of a plurality of inner peripheral surfaces along cup portion, in another step, form sawtooth on the surface in the hole in bar portion then.
In view of said circumstances, the applicant has proposed a kind of method of making such outer ring member that is used for constant velocity joint, wherein, form rail slot and sawtooth more accurately and with the concentricity that improves, and can form rail slot and the sawtooth in the bar portion (referring to patent documentation 1 to 3) in glass portion simultaneously.
According to the classical production process of the outer ring member that is used for constant velocity joint that is proposed by the applicant, at first, upsetting cylinder blank 1 (referring to Figure 12 A) is so that blank 1a (referring to Figure 12 B) is deformed into the local blank 1b (referring to Figure 12 C) that increases of diameter.Then, suppress blank 1b from axial both sides to form the preform 2 (referring to Figure 12 D) of cup-shaped with the drift (not shown).In the cup portion 3 of preform 2, form have the groove that is similar to rail slot than macropore 4.On the other hand, in bar portion 5, form the hole 6 that does not have sawtooth.
Subsequently, go out the hole 4 that is formed on glass portion 3 and the burr (burr) 7 (referring to Figure 12 E) between the hole 6 in the bar portion 5 with the drift (not shown).Then, in the end in the step, the inner wall surface of processing cup portion 3 to be finishing the rail slot on it, and the surface that processes the hole 6 in the bar portion 5 to be forming sawtooth thereon, thereby makes finished product 9 (referring to Figure 12 F).
This cold-forging die that is used to form spline comprises the patrix with first spline shaping platform (forming land), has forming section and release portion on this first spline shaping platform.This cold-forging die also comprises the counterdie with second spline shaping platform, has forming section, release portion and correction unit on this second spline shaping platform.
In view of said circumstances, patent documentation 4 discloses a kind of cold-forging die that is used to form spline, and it comprises: have the patrix of the first spline shaping platform, have forming section and release portion on this first spline shaping platform; And the counterdie with second spline shaping platform, have forming section, release portion and correction unit on this second spline shaping platform.Patent documentation 4 has also been described: because the correction unit of the second spline shaping platform, this cold-forging die that is used to form spline has prevented to make that thick naked metal puts on thick naked metal along the power of direction bending perpendicular to axial direction.Therefore, can avoid between first external splines and second external splines departing from vertically.
In addition, patent documentation 4 has been described: because do not have correction unit on the first spline shaping platform, so the reaction force that produces in the second spline shaping platform does not concentrate in the release portion of the first spline shaping platform, cause not so good upsetting thus.As a result, the spline that is formed on the first spline shaping platform side can misalignment.
But disclosed technical conceive relates on the outer circumferential face of the thick naked metal of tubulose and along it and axially accurately forms first external splines and second external splines in the patent documentation 4.Therefore, this design is obviously different with the problem that the present invention solves, and the problem that the present invention solves is: minimizing puts on load on the mold component to improve its serviceability.
And, because disclosed technical conceive relates to and having proposed in the patent documentation 4: have the patrix of the first spline shaping platform and have the counterdie of the second spline shaping platform, have forming section and release portion on this first spline shaping platform, have forming section, release portion and correction unit on this second spline shaping platform, so can not use this design for those skilled in the art in the recess-type bar portion of outer ring member, to form the hole.
The conventional method that is used for the outer shroud of constant velocity joint according to the manufacturing that proposes as the claimant, shown in Figure 12 D, when thereby upper punch and low punch are close to each other vertically when forming the hole 4 of cup portion 3 and the hole 6 in the bar portion 5 simultaneously, hole 6 often comparatively forms on inaccuracy ground than the hole 4 of cup portion 3, thereby need be such as the additional treatments of machining.In addition, applied heavier load, shortened the working life of mould thus to mould.
Patent documentation 1: Japanese kokai publication hei 3-60838 communique
Patent documentation 2: Japanese kokai publication hei 3-60839 communique
Patent documentation 3: Japanese kokai publication hei 3-60840 communique
Patent documentation 4: Japanese kokai publication hei 8-215786 communique
Summary of the invention
Cardinal principle purpose of the present invention provides the method that a kind of manufacturing is used for the outer ring member of constant velocity joint, and this outer ring member comprises having the more hole of high dimensional accuracy in its bar portion.
Main purpose of the present invention provides the method that a kind of manufacturing is used for the outer ring member of constant velocity joint, wherein, applies the load of minimizing to the mold component that is used to form described hole, thereby improves the serviceability of mold component.
Another object of the present invention provides the method that a kind of manufacturing is used for the outer ring member of constant velocity joint, and provide a kind of middle formed body that is used to make the outer ring member of constant velocity joint, wherein, in the bar portion of this outer ring member, form the hole of accurate dimension, and apply the load of minimizing to the mold component that is used to form this hole, thereby favourable material flows and improves the serviceability of mold component when having the bar portion in described hole in forging.
According to the present invention, suppress the workpiece in the chamber that is loaded in patrix vertically downward by first mold component.The bar portion forming section drawn stem of counterdie is suppressed this bar portion with respect to second mold component of the described first mold component coaxial positioning simultaneously.Thus, formed the single forming body that in described bar portion, has the hole.Because upsetting single forming body is to obtain pushing the bar portion with hole before the secondary forming body in later step, so when in described later step, generating finished product, realized the product precision that improves, also reduced the finishing process amount of in described later step, carrying out simultaneously with respect to described hole.
In addition,, on the outer circumferential face at an end place of described second mold component, form shaping platform, release portion and correction station, thereby described shaping platform and described correction unit are because described release portion is formed between the two does not directly connect according to the present invention.In addition, according to the present invention, because the described shaping platform of described second mold component is positioned in vertically the end F1 and the zone between the other end F2 of the bar portion forming section that is formed in the described counterdie, form the material that the downside of portion's drawing workpiece causes by bar portion and flow so can suitably adjust, and another material that makes progress that is caused by the following central part by second mold component compacting workpiece flows towards bar portion by counterdie.
As a result, according to the present invention, prevented that material adhesion is to the outer surface that is used for forming in bar portion second mold component in hole.And, reduce the load that puts on second mold component, thereby improved the serviceability of second mold component.And also can in bar portion, form the hole of dimensional accuracy (forming accuracy) with raising.
Description of drawings
Fig. 1 is the flow chart of the process of the outer ring member that manufacturing is used for constant velocity joint according to the inventive method;
Fig. 2 A to Fig. 2 F is side view and partial vertical sectional view, all shows the shape in order to the workpiece of the outer ring member that forms constant velocity joint of forging according to the manufacture process of Fig. 1;
Fig. 3 is a vertical sectional view, schematically shows the structure of first forging die that uses in the first cold forging step according to the embodiment of the invention, is used for forming the hole by forward extrusion in bar portion;
Fig. 4 is the mobile vertical sectional view of material that local expression causes when forming the hole by second drift in bar portion;
Fig. 5 is the side view of second drift of expression first forging die shown in Figure 3;
Fig. 6 is the local abridged enlarged side view of second drift shown in Figure 5;
Fig. 7 is local enlarged side view, show the whole shaping platform that is formed at therein in second drift and be positioned under the state in the zone between the upper end F1 of the bar portion forming section that is formed in the counterdie and the lower end F2, the position between this shaping platform and the bar portion forming section concerns;
Fig. 8 is local enlarged side view, shows wherein whole shaping platform and is positioned at the upper end F1 of bar portion forming section and the state in the zone between the F2 of lower end;
Fig. 9 is local enlarged side view, and a part that shows the platform that wherein is shaped is positioned at the upper end F1 of bar portion forming section and the state in the zone between the F2 of lower end;
Figure 10 is local enlarged side view, shows wherein whole shaping platform and is positioned at the upper end F1 of bar portion forming section and the extra-regional state between the F2 of lower end;
Figure 11 is local enlarged side view, shows wherein whole shaping platform and is positioned at the upper end F1 of bar portion forming section and the extra-regional state between the F2 of lower end; And
Figure 12 A to Figure 12 F is a vertical sectional view, all shows the process that is used for the outer ring member of constant velocity joint by the previously presented manufacturing of the applicant.
Embodiment
The method that is used for the outer ring member of constant velocity joint in manufacturing according to the embodiment of the invention, shown in the flow chart of Fig. 1, workpiece 10 cold forgings that will be carbon steel rounding cylinder (blank) form repeatedly, to make the outer ring member that is used for the three pin-type constant velocity joint as finished product.
In first preparation process, handle the workpiece 10 (referring to Fig. 2 A) that is cut into cylindrical body form by spheroidizing annealing with predetermined length.As a result, make workpiece 10 softening, thereby in first to the 5th cold forging step described below, can be easy to handle.
In second preparation process, workpiece 10 is applied the lubrication chemistry film.Specifically, handle the lubrication chemistry film of formation Zinc phosphate on the surface of workpiece 10 so that surface lubrication by phosphatization.Can reach predetermined amount of time in the solvent that wherein is dissolved with phosphoric acid zinc etc. and form this lubrication chemistry film by workpiece 10 is immersed.
Then, in the first cold forging step S1, be coated with an end face of the workpiece 10 of lubrication chemistry film along forward extrusion, in bar portion, to form the hole.Figure 3 illustrates first forging die 20 that in the first cold forging step S1, uses according to the embodiment of the invention.
First forging die 20 comprises patrix 22 and counterdie 24.Mounted inside is in the first mould holder 26 and the second mould holder 28 respectively for patrix 22 and counterdie 24, and one is engaged to the first mould holder 26 and the second mould holder 28 thus.
First forging die 20 is fixed to vertical movable member 30 by stationary punch holder 32, and this vertical movable member 30 is connected to the pressure head of unshowned press machine.First forging die 20 also comprises: first drift 34, and this first drift descends along with vertical movable member 30 and suppresses workpiece 10 vertically downward; And a plurality of guide rod (not shown), these guide rods are fixedly mounted in the bed die (not shown) and vertically guide vertical movable member 30.First drift 34 is as first mold component, but it is according to the operation of unshowned press machine and vertical motion.
As shown in Figure 3, counterdie 24 has the bar portion forming section 38 that comprises cone shape hole, and the diameter of this cone shape hole reduces downwards gradually from the border between patrix 22 and the counterdie 24.The lower end of bar portion forming section 38 is connected to the through hole 40 with constant inner diameter continuously.In the inside of through hole 40, be furnished with second drift 44 that is used for forming hole 42 in bar portion 36, make an end of second drift 44 point to.To be assemblied on the end of second drift 44 around the cylindrical sleeve 46 of the outer surface of second drift 44 and remain in the through hole 40.
Patrix 22 comprises the chamber 48 that is formed by through hole, this chamber be formed on counterdie 24 in the upper end of bar portion forming section 38 in abutting connection with being connected, and have the internal diameter identical with bar portion forming section 38.Workpiece 10 is loaded in the chamber 48.
As shown in Figure 5 and Figure 6, second drift 44 in through hole 40 towards on the outer circumferential face at an end place comprise: shaping platform 50, this shaping platform 50 has the arc section of predetermined curvature on its top; Release portion 52, this release portion 52 have constant width and vertically with shaping platform 50 adjacency, and have the little constant outer diameter of external diameter than the largest portion place of shaping platform 50; And correction station 54, this correction station 54 vertically with release portion 52 adjacency, and be the form of the external diameter annular projection bigger than release portion 52.
The whole shaping platform 50 that comprises the top end of second drift 44 is vertically located in the through hole 40 of counterdie 24, and as upper end (end) F1 of the starting point that is formed at the bar portion forming section 38 in the counterdie 24 with as (referring to Fig. 3 and Fig. 4) in regional between lower end (the other end) F2 of end point.
In this case, release portion 52 is formed between the shaping platform 50 and correction station 54 of top end, and shaping platform 50 is not connected directly to correction station 54, the surface friction drag when in bar portion 36, forming the hole can be reduced thus, the load that puts on second drift 44 can also be reduced simultaneously by second drift 44.
First forging die 20 according to present embodiment forms substantially as mentioned above like that.As following the introduction, the workpiece (blank) 10 in the chamber 48 of the patrix 22 of introducing first forging die 20 is carried out cold forging one time, promptly carry out forward extrusion in workpiece 10, to form the hole.
At first, the driving pressure machine is so that be connected to vertical movable member 30 reductions of the pressure head of press machine.When vertical movable member 30 reduced, first drift 34 descended and final upper surface against workpiece 10.
When first drift 34 further descends upper surface with compacting workpiece 10, by the downside of bar portion forming section 38 drawing workpiece, i.e. the side opposite of workpiece 10 with its downtrodden upper surface.As a result, shown in Fig. 2 B, obtain wherein to have the single forming spare (single forming body) 58 in hole 42.In bar portion 36, form hole 42 by an end of second drift 44 in the through hole 40 that supports and insert counterdie 24 by mould holder (not shown).Formed single forming spare 58 comprises: shape is corresponding to the cylindrical portion 55 of the external shape of workpiece 10; The tapered diameter that abuts to form below cylindrical portion 55 reduces portion 56; And with the bar portion 36 of reduced diameter portion 56 adjacency.
This single forming spare 58 is as middle formed body.Hole 42 in the single forming spare 58 has the flat bottom (referring to Fig. 3 and Fig. 4) between the border that is positioned at the border that limited by cylindrical portion 55 and reduced diameter portion 56 and is limited by reduced diameter portion 56 and bar portion 36.
In this case, because the shaping platform 50 and the correction station 54 that are formed in the end of second drift 44 are not connected to each other directly, but between them, be inserted with release portion 52, so reduced the surface friction drag when in bar portion 36, forming the hole, thereby reduced the load that puts on second drift 44.
In addition, because constituting the shaping platform 50 of the top end vertically of second drift 44 is positioned at as upper end (end) F1 of the starting point that is formed at the bar portion forming section 38 in the counterdie 24 and as in the zone between lower end (the other end) F2 of end point, so having formed good material flows, comprise that the material towards bar portion that the downside by the tapered rod portion forming section 38 drawing workpiece 10 by counterdie 24 causes flows (referring to the arrow A among Fig. 4), and by another material that is directed upwards towards that the following central part by second drift, 44 compacting workpiece 10 causes flow (referring to the arrow B among Fig. 4).
In other words, since formed suitable material flow (be included in that material near the perimeter the reduced diameter portion 56 flows and near the inner region hole 42 in opposite material mobile), therefore prevented the outer surface of material adhesion to second drift 44, thereby reduced the load that puts on second drift 44, can improve the serviceability of second drift 44 thus, also improve the dimensional accuracy in the hole 42 that is formed in the bar portion 36 simultaneously.
For the bar portion forming section 38 of counterdie 24 and the relative positioning of second drift 44, as shown in Figure 7 and Figure 8, the whole shaping platform 50 of second drift 44 is positioned at and is defined in as the upper end F1 of the starting point of bar portion forming section 38 and as in the zone between the lower end F2 of end point.
On the other hand, extremely shown in Figure 11 as Fig. 9, under the situation in the zone on only some shaping platform 50 is positioned between F1 and the lower end F2, if perhaps whole shaping platform all is positioned at outside this zone, then can not be easily and suitably be formed on the perimeter of reduced diameter portion 56 and the material in the inner region flows.
Afterwards, the driving pressure machine so that first drift 34 upwards promote with pressure head and vertical movable member 30.Then, push away single forming spare 58 more than the rising shifting facilities (not shown), shown in Fig. 2 B.
As mentioned above, according to present embodiment, because extruding wherein has the bar portion 36 in hole 42 carrying out upsetting in secondary cold forging step S3 before,, also reduced the finishing process amount that in later step, need on hole 42, carry out simultaneously so improved the product precision of the finished product of final acquisition.Hole 42 in the bar portion 36 forms the hole 42 essentially identical shapes with finished product 70 (that is the above-mentioned outer ring member that is used for constant velocity joint).
Then, single forming spare 58 is carried out pre-upsetting (S2).More particularly, single forming spare 58 is loaded in the chamber of the second forging die (not shown).During pre-upsetting, also bar portion 36 is inserted in the bar portion holder (not shown) of second forging die.
When compacting and stop component (not shown) support the top of the bar portion 36 in the insertion rod portion holder (not shown) by the top of drift pressing one-time drip molding 58 so that 58 changes of single forming spare are flat.Single forming spare 58 thereby become flat so that its top is compressed and diameter increases, thus performing member 60 (referring to Fig. 2 C) formed.Can omit pre-upsetting step (S2) according to the degree of forging stock formation, the material behavior that forging is bad etc.
Subsequently, in secondary cold forging step S3, upsetting is further carried out on the top of performing member 60, thereby compressed this top and its diameter is increased, thereby form secondary forming spare 62 (referring to Fig. 2 D).
When suppressing the top of the performing member 60 in the chamber that is loaded into the second forging die (not shown) by the drift (not shown), the top of performing member 60 is out of shape vertically because of compression, thereby obtains secondary forming spare 62.
After finishing secondary cold forging step S3, make 62 annealing of secondary forming spare at low temperatures to eliminate stress from it.In addition, handle secondary forming spare 62, removing the scale that produces because of stress relieving etc., thereby and carry out phosphatization and handle the lubrication chemistry film that on the outer surface of secondary forming spare 62, forms Zinc phosphate etc. through annealing by shot-peening.By on secondary forming spare 62, carrying out these processing, can easily make 62 plastic deformations of secondary forming spare.
Afterwards, use the 3rd forging die (not shown) to carry out cold forging step S4 three times.Secondary forming spare 62 is carried out the cold forging step three times, bar portion is inserted in the bar portion insertion part of the 3rd forging die (not shown), thereby obtain three drip moldings 64 (referring to Fig. 2 E).
After three cold forging step S4 finish, on three drip moldings 64, carry out cold forging step S5 four times.Before carrying out four cold forging step S5, can make the surface or the surface-coated of the 4th forging die (not shown) of three drip moldings 64 that fluid lubricant is arranged, thereby prevent from when carrying out four cold forging step S5 on three drip moldings 64 or the 4th forging die, interlock to occur.Fluid lubricant can be the known fluid lubricant that uses up to now.
In four cold forging step S5, use unshowned the 4th forging die on the inner and outer surface of three drip moldings 64, to carry out ironing (final sizing), thereby cup portion 66 is trimmed to finished form.Specifically, process three drip moldings 64 so that the width of the wall thickness of cup portion 66 and rail slot 68a to 68c and the degree of depth obtain given dimensional accuracy, thereby generate the outer ring member that is used for the three pin-type constant velocity joint (referring to Fig. 2 F) as finished product 70, wherein cup portion 66 (comprising the shape of rail slot 68a to 68c etc.) has required dimensional accuracy.
According to present embodiment, before carrying out upsetting, in step S1, use second drift 44 in bar portion 36, to form hole 42, thereby improved the dimensional accuracy in the hole 42 that is formed in the bar portion 36 by secondary cold forging step S3.In addition, owing to, therefore reduced the load that puts on as on second drift 44 of second mold component, thereby improved the serviceability of second drift 44 flowing by forging the suitable material that occurs during the formation bar portion 36.
In other words, shown in Figure 12 D, by the previously presented manufacture method that is used for the outer ring member of constant velocity joint of the applicant, because form the hole 4 of glass portion 3 and the hole 6 in the bar portion 5 simultaneously, so the precision in hole 6 is relatively poor and can apply heavier load to mould undesirably by upper punch and low punch.By contrast, according to embodiments of the invention, because cylindrical work 10 is being carried out in bar portion 36, form the hole during the first forging step, and in later step, is separating and forming independently the hole of cup portion 66, so dimensional accuracy has been improved in the hole 42 that is formed in the bar portion 36.In addition, because the suitable material that occurs when forming bar portion 36 by forging flows, therefore reduced the load that is used to form hole 42 that puts on second drift 44, thereby improved the serviceability of second drift 44.
Claims (8)
1, a kind of manufacturing is used for the equipment of the outer ring member of three pin-type constant velocity joint, this outer ring member comprises by cold forging integrally formed each other cup portion and has the bar portion in hole, wherein, the cylindrical work (10) that will be cut into predetermined length before upsetting is squeezed into the single forming body (58) that is made of the described bar portion that has described hole therein, and described equipment comprises:
Patrix (22), this patrix comprise can be for the chamber (48) that loads described workpiece (10);
Counterdie (24), this counterdie and the assembling of described patrix (22) one, described counterdie (24) comprises bar portion forming section (38), this bar portion forming section comprises the cone shape hole that diameter reduces gradually downwards;
Vertical movable first mold component (34), this first mold component is used for being compressed on vertically downward the described workpiece (10) that is loaded into described chamber (48); And
Second mold component (44) of substantial cylindrical, this second mold component comprises the end in the through hole (40) that inserts with described bar portion's forming section (38) adjacency, described second mold component (44) forms described hole in by the described bar portion (36) of described bar portion's forming section (38) drawing
Wherein, the outer circumferential face at an end place of described second mold component (44) comprising: shaping platform (50), and this shaping platform has the arc section of predetermined curvature; Release portion (52), this release portion is along axial and described shaping platform (50) adjacency of described second mold component (44); And correction station (54), this correction station is along described axial and described release portion (52) adjacency, and the external diameter of described correction station (54) is bigger than described release portion (52), and
Wherein, the whole described shaping platform (50) of described second mold component (44) is positioned at described bar portion's forming section (38) along in the end (F1) and the zone between the other end (F2) of the axial direction of the described through hole (40) of described counterdie (24).
2, manufacturing according to claim 1 is used for the equipment of the outer ring member of constant velocity joint, and wherein, described shaping platform (50) and described correction station (54) are arranged each other discontinuously.
3, manufacturing according to claim 1 is used for the equipment of the outer ring member of constant velocity joint, and wherein, the external diameter of described release portion (52) is littler than the maximum diameter of described shaping platform (50).
4, a kind of manufacturing is used for the method for the outer ring member of three pin-type constant velocity joint, and this outer ring member comprises by cold forging integrally formed each other cup portion and have the bar portion in hole that described method comprises the steps:
The cylindrical work (10) that is cut into predetermined length is pushed the single forming body (58) that has the described bar portion (36) that wherein has described hole with formation;
The part except its described bar portion (36) to described single forming body (58) is carried out upsetting, thereby makes described part distortion to form secondary forming body (62) by axially compressing along it;
Oppositely push described secondary forming body (62), have three formed bodies (64) of the cup portion that wherein is limited with rail slot with formation; And
Described cup portion to described three formed bodies (64) carries out ironing.
5, manufacturing according to claim 4 is used for the method for the outer ring member of constant velocity joint, wherein, in the step that forms described single forming body (58), first drift (34) is suppressed described workpiece vertically, and with second drift (44) of described first drift (34) coaxial positioning suppress simultaneously described workpiece by the part of the to be formed described bar portion (36) of bar portion forming section (38) drawing of mould (24), form the described hole in the described bar portion (36) thus.
6, manufacturing according to claim 5 is used for the method for the outer ring member of constant velocity joint, and wherein, the top of described second drift (44) is positioned in the end (F1) and the zone between the other end (F2) of described bar portion's forming section (38).
7, a kind of middle formed body that is used for the outer ring member of three pin-type constant velocity joint, this outer ring member comprise by cold forging integrally formed each other cup portion and have the bar portion in hole that this centre formed body comprises:
Single forming body (58) with the described bar portion (36) that has described hole, this hole is formed in the described bar portion (36) by the cylindrical work (10) that is cut into predetermined length is pushed, and described single forming body is that described cylindrical work (10) forms by above-mentioned extruding;
Wherein, described single forming body (58) comprising: shape is corresponding to the cylindrical portion (55) of the shape of described workpiece (10); Tapered diameter reduces portion (56), and this reduced diameter portion (56) abuts to form with described cylindrical portion (55) vertically; And described bar portion (36), this bar portion and described tapered diameter reduce portion (56) adjacency and comprise the described hole (42) that forms by described extruding.
8, middle formed body according to claim 7, wherein, described hole (42) has flat bottom, and this flat bottom is positioned between the border of the border of described cylindrical portion (55) and described reduced diameter portion (56) and described reduced diameter portion (56) and described bar portion (36).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005081166A JP2006266286A (en) | 2005-03-22 | 2005-03-22 | Manufacturing method for outer ring member for constant velocity joint and its intermediate molded body |
| JP081166/2005 | 2005-03-22 | ||
| JP081430/2005 | 2005-03-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101091070A CN101091070A (en) | 2007-12-19 |
| CN100554712C true CN100554712C (en) | 2009-10-28 |
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|---|---|---|---|
| CNB2006800015195A Expired - Fee Related CN100554712C (en) | 2005-03-22 | 2006-03-20 | Manufacturing is used for the equipment of outer ring member of constant velocity joint and the middle formed body of method and outer ring member |
Country Status (2)
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| JP (1) | JP2006266286A (en) |
| CN (1) | CN100554712C (en) |
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| JP5776365B2 (en) * | 2010-06-25 | 2015-09-09 | 日本精工株式会社 | Method and apparatus for manufacturing stepped cylindrical member |
| WO2012086573A1 (en) * | 2010-12-20 | 2012-06-28 | 昭和電工株式会社 | Punch for cold backward extrusion forging |
| JP5867070B2 (en) * | 2011-12-27 | 2016-02-24 | 日本精工株式会社 | Method for manufacturing stepped cylindrical member |
| CN103962801B (en) * | 2014-04-25 | 2017-01-04 | 上海工程技术大学 | A kind of forming technology of joint of petroleum drill rod |
| JP6398875B2 (en) * | 2015-05-29 | 2018-10-03 | 株式会社デンソー | Deep hole forging machine |
| CN105537485A (en) * | 2016-01-14 | 2016-05-04 | 上海久进精密锻造有限公司 | Steering shaft forming die and forming technology |
| JP6769100B2 (en) * | 2016-05-11 | 2020-10-14 | 株式会社ジェイテクト | Manufacturing method of outer ring of constant velocity joint |
| CN108097795B (en) * | 2017-12-22 | 2023-08-25 | 江西省安源万向实业有限公司 | Cross axle punching and shaping device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58184033A (en) * | 1982-04-22 | 1983-10-27 | Nippon Denso Co Ltd | Manufacture of flanged shaft |
| JPH0360841A (en) * | 1989-07-28 | 1991-03-15 | Honda Motor Co Ltd | Manufacture of outer race for constant velocity joint and device therefor |
| JPH07241644A (en) * | 1994-03-04 | 1995-09-19 | Toyota Motor Corp | Extrusion machine |
| JP3615674B2 (en) * | 1999-07-22 | 2005-02-02 | 株式会社豊田自動織機 | Manufacturing method of swash plate for swash plate compressor |
| JP2003230933A (en) * | 2002-02-07 | 2003-08-19 | Honda Motor Co Ltd | Counter punch of forging die |
-
2005
- 2005-03-22 JP JP2005081166A patent/JP2006266286A/en active Pending
-
2006
- 2006-03-20 CN CNB2006800015195A patent/CN100554712C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814440A (en) * | 2012-08-02 | 2012-12-12 | 盐城理研精密锻造有限公司 | Forging method of cylindrical slide sleeve and reverse extrusion mould |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101091070A (en) | 2007-12-19 |
| JP2006266286A (en) | 2006-10-05 |
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