CN1050075C - Method forming of hub from block of plate and belt wheel made from plate - Google Patents
Method forming of hub from block of plate and belt wheel made from plate Download PDFInfo
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- CN1050075C CN1050075C CN93107652A CN93107652A CN1050075C CN 1050075 C CN1050075 C CN 1050075C CN 93107652 A CN93107652 A CN 93107652A CN 93107652 A CN93107652 A CN 93107652A CN 1050075 C CN1050075 C CN 1050075C
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Abstract
The present invention comprises the following procedures: a plate-shaped metal blank 1 is bent into a convex shape; holes 5A are punched at the top of the bent blank 1; under the condition that the extension of the outer peripheral part 1e of the blank 1 toward the outer radial direction is limited, the bent part between the peripheral part 1e and the peripheral part of the holes is bent toward the direction opposite to the bent direction; a tubular wheel hub part 6 protruding toward one side is formed at the central part of the blank 1. Even if the plate is not very thin and inner diameter is small, a wheel hub part with enough wall thickness and protruding height can be formed by using a small pressure machine.
Description
The present invention relates to a kind of hub portion formation method of sheet material base material, for example resemble poly-v pulleys and crank pulley etc., at the central part of plate-shape metal base material, the tubular hub portion is to a side-prominent formation one, so that be entrenched in the revolving body outside of gyroaxis etc.The invention still further relates to and use this method to form the method for sheet material system belt pulleys such as poly-v pulleys.
Method as forming at from the central part of plate-shape metal base material to a side-prominent tubular hub portion had cold-forging method, pull and stretch processing method, plunging processing method in the past.
; in the said method; in the cold-forging method occasion; it is the mobile tubular hub portion that forms of plasticity that relies on material itself; so use the thick blank of sheet material, for example crank pulley is such, when wishing to have the board product of the little and hub portion that projecting height is bigger of internal diameter; even use the big forcing press of 2000T～2500T grade, also be difficult to form the hub portion of setting rising height.
In pull and stretch processing occasion, along with pull and stretch, material meeting relief, resulting product thickness of slab particularly hub portion wall thickness became thin, can not meet the demands on the intensity.
In plunging processing method occasion, before this with punchings such as perforating press, the aperture that can obtain and form (being equivalent to the hub portion internal diameter) is the hub portion of proportional height roughly, so when the little hub portion of internal diameter, can not make it highly high, thereby, but there is the problem that the range of work is restricted owing to internal diameter and height relationships.
The present invention puts forward in view of the existing problem of above-mentioned prior art, its purpose is to provide a kind of hub portion formation method of sheet material base material, do not make thickness of slab too thin, and can form desired internal diameter, wall thickness and hub portion highly accurately with subpress, the present invention also aims to provide a kind of formation method of using the sheet material system belt pulley of said method.
In order to achieve the above object, the hub portion formation method of the 1st sheet material base material of the present invention is that a kind of central part at plate-shape metal base material forms towards the hub portion formation method of the sheet material base material of one of this blank side-prominent tubular hub portion.
It comprises makes above-mentioned metal base material bend to the bending operation of convex towards the outstanding side of hub portion, at this perforation process of curved blank overp0unch and the bending operation that forms the tubular hub portion, the bending operation of said formation tubular hub portion is under court of the blank outer peripheral edges portion state that radially extension of foreign side is restricted, sweep between the outer peripheral edges portion that makes above-mentioned blank and the hole peripheral part forms the tubular hub portion towards the direction bending opposite with its bending direction.
The hub portion formation method of the 1st sheet material base material according to the present invention, it all is a kind of bending machining that the bending operation of metal base material applies bending operation with the perforation back to sweep, so can prevent pull and stretch to add the intensity reduction that the thickness of slab that causes because of material plasticity flows man-hour reduces and produces thereupon, simultaneously, even the metal base material that thickness of slab is quite thick, also can use smaller forcing press, be easy to form the hub portion of setting.And, in the bending operation of above-mentioned formation tubular hub portion, because court of the blank outer peripheral edges portion radially extension of foreign side is restricted, so prevent relief toward material foreign side, make material mainly flow to the hole side of central part, even under the little occasion of internal diameter, also can form the hub portion of guaranteeing enough wall thickness and projecting height.In addition, because blank outer peripheral edges portion is restricted towards the extension of foreign side radially, so can improve goods outside dimension precision.
In addition, the plunging operation by setting between the bending operation of above-mentioned convex bending operation and formation tubular hub portion makes the peripheral part in above-mentioned hole give prominence to towards the blank bending direction can accurately form the hub portion in the following bending operation, improves yield rate.
And, behind the bending operation of above-mentioned formation tubular hub portion, by finishing step is set, the end face of formed tubular hub portion from the above-mentioned bending operation of axial compression, make its projecting height that becomes setting, the projecting height machining accuracy that hub portion is set is good, simultaneously, the unnecessary ledge of short transverse helps the hub portion wall thickening, and is more effective to hub portion intensity.
The present invention's the 2nd sheet material system belt pulley formation method is the formation method that forms the sheet material system belt pulley of V-shaped groove towards the side-prominent tubular hub portion of this blank one, in the periphery wall portion of above-mentioned blank along with forming at the central part of plate-shape metal base material.
It comprises makes above-mentioned metal base material bend to the bending operation of convex towards the outstanding side of hub portion, at this perforation process of curved blank overp0unch, the sweep court direction bending opposite between the outer peripheral edges portion that makes above-mentioned blank in blank outer peripheral edges portion under the state that radially extension of foreign side is restricted and the hole peripheral part with its bending direction, form the bending operation of par and tubular hub portion, from the thickness of slab direction to bending operation after the above-mentioned par pressurization of blank so that the wall thickening operation of outer peripheral portion wall thickening and in the V-shaped groove forming process of the periphery wall portion shaping V-shaped groove of this wall thickening.
The 2nd sheet material system belt pulley formation method according to the present invention, identical with the hub portion formation method of above-mentioned the 1st sheet material base material, with regard to the tubular hub portion of its central part, can be with smaller forcing press, be easy to and precision forms the hub portion of guaranteeing enough wall thickness and projecting height well.In addition, when surrounding wall portion formed V-shaped groove outside after hub portion formed, since from the thickness of slab direction to bending operation after blank par pressurization, so can in an operation, reasonably reach for belt pulley goods light-weighted par thin-walled property and to the outer peripheral portion wall thickening of shaping V-shaped groove necessity, thereby can reduce the production process of sheet material system belt pulley as far as possible, reduce manufacturing cost.
The 3rd sheet material system belt pulley formation method of the present invention is along with the central part of plate-shape metal base material forms towards the side-prominent tubular hub portion of this blank one, forms the sheet material system belt pulley formation method of V-shaped groove on above-mentioned blank periphery wall.
It comprises makes above-mentioned metal base material bend to the bending operation of convex towards the outstanding side of hub portion, at this perforation process of curved blank overp0unch, the sweep court direction bending opposite between the outer peripheral edges portion that makes above-mentioned blank in blank outer peripheral edges portion under the state that radially extension of foreign side is restricted and the hole peripheral part with its bending direction, form the bending operation of par and tubular hub portion, from the thickness of slab direction to bending operation after the above-mentioned par pressurization of blank extend par pressurization operation with the external diameter that need to obtain, outer end, the par lateral bending that this is pressurized is to a side of belt pulley axis of rotation direction, forming V-shaped groove forms with the perisporium formation operation of surrounding wall portion and the V-shaped groove forming process that forms V-shaped groove in surrounding wall portion.
The 3rd sheet material system belt pulley formation method according to the present invention, its hub portion formation method with above-mentioned the 1st sheet material base material is identical, with regard to the tubular hub portion of central part, can be with smaller forcing press, be easy to and precision forms the hub portion of guaranteeing enough wall thickness and projecting height well.In addition, during V-shaped groove was shaped after hub portion formed, since be provided with from its thickness of slab direction to bending operation after the par pressurization of blank extend with the par pressurization operation of the external diameter that need to obtain and make this pressurized outer end, par lateral bending form operation to a side's of axis of rotation direction perisporium, so can provide the goods lightweight, external diameter is unitized, light and the high sheet material system belt pulley of dimensional accuracy.
Further specify the present invention by description with reference to the accompanying drawings to the embodiment of the invention.Wherein:
Figure 1A and Figure 1B are the major part profiles of the 1st bending (pull and stretch) operation in the hub portion formation method of explanation the present invention the 1st sheet material base material;
Fig. 2 A and Fig. 2 B are the major part profiles of explanation the 2nd bending (pull and stretch) operation;
Fig. 3 is the major part profile of explanation perforation process;
Fig. 4 A and Fig. 4 B are the profiles of the major part of explanation the 1st bending (attenuate pull and stretch) operation;
Fig. 5 A and Fig. 5 B are the profiles of the major part of explanation the 2nd bending (attenuate pull and stretch) operation;
Fig. 6 A and Fig. 6 B are the major part profiles of explanation the 3rd bending (attenuate pull and stretch) operation;
Fig. 7 A and Fig. 7 B are the major part profiles of explanation the 4th bending (attenuate pull and stretch) operation;
Fig. 8 is the profile of the sheet material base material after hub portion forms;
Fig. 9 A and Fig. 9 B are the major part profiles of bending (pull and stretch) operation in the formation method of explanation the present invention the 2nd sheet material system belt pulley;
Figure 10 is the major part profile of the same perforation process of explanation;
Figure 11 A and Figure 11 B are the major part profiles of the same plunging operation of explanation;
Figure 12 A and Figure 12 B are the major part profiles of the same bending (attenuate pull and stretch) operation of explanation;
Figure 13 A and Figure 13 B are the major part profiles of the same hub portion finishing step of explanation;
Figure 14 is the profile of the sheet material base material after the same hub portion forms;
Figure 15 is the half profile of the major part of the same wall thickening operation of explanation;
Figure 16 is the half profile of the major part of the 1st the same rotation-formed operation of explanation;
Figure 17 is the half profile of the major part of the 2nd the same rotation-formed operation of explanation;
Figure 18 is the half profile of the major part of the same the 3rd rotation-formed (poly-V groove moulding) operation of explanation;
Figure 19 is the pressurize half profile of major part of operation of the par in the formation method of explanation the present invention the 3rd sheet material system belt pulley;
Figure 20 is the half profile that the same perisporium of explanation forms the major part of operation;
Figure 21 is the half profile of the major part of the same poly-V groove molding procedure of explanation.
The embodiment of the hub portion formation method of the one-piece type sheet material system belt pulley of wheel hub that uses with reference to crank pulley among the embodiment of the hub portion formation method of description of drawings the present invention the 1st sheet material base material etc. at first.In this embodiment, use about diameter 90～100mm, the circular tabular metal base material of thickness of slab t about as 5mm, hub portion inner diameter d 1 is about 12mm, belt pulley outside diameter d 2 is about 80mm, hub portion projecting height h is about 35～36mm, explains with regard to forming the one-piece type sheet material system belt pulley of wheel hub under the above-mentioned condition.
Shown in Figure 1A, in the 1st bending (dashing dark) operation, the flat blank 1 of circle shape metal system is placed on the counterdie of being made up of drift 2a and punch holder 2b 2, subsequently, make this counterdie 2 near each other by forcing press with the patrix of forming by punch die 3a and die holder 3b 3, shown in Figure 1B, make above-mentioned metal base material 1 integral body bend to the convex of secondary pull and stretch shape to the outstanding side of hub portion.At this moment curved shape is determined by the shape of the inlet conical surface 3b1 of the die holder 3b of the front end shape of the drift 2a of counterdie 2 and patrix 3.
Shown in Fig. 2 A and Fig. 2 B, in the 2nd bending (dashing dark) operation, change and use variform drift 2a of front end and the variform die holder 3b of inlet conical surface 3b1, as mentioned above, make patrix 3 and counterdie 2 near each other, with blank 1 pull and stretch be processed into be roughly coniform.
Subsequently, as shown in Figure 3, above-mentioned curved blank 1 is placed on the special-purpose punching seat 4, in this state, use the perforating tool 5 of lathe and drilling machine, form the hole 5A about 7mm at its top.
Then, transfer to bending (attenuate pull and stretch) operation that forms the tubular hub portion, as Fig. 4 A, 4B～Fig. 7 A, shown in the 7B, this bending (attenuate pull and stretch) operation is divided into the 1st～the 4th operation, the curvature of the inlet bight 13b2 of the die holder 13b of the overhang of the drift 12a of the counterdie 12 in the metal pattern of the attenuate pull and stretch special use that the metal pattern that uses when changing with the above-mentioned the 1st and the 2nd bending (pull and stretch) operation on the one hand successively is different and the curvature of front end and patrix 13, make patrix 13 and counterdie 12 near each other on the one hand, sweep 1b between the 1e of outer peripheral edges portion of above-mentioned base material 1 and hole peripheral part 1c is thinned pull and stretch and bending in the contrary direction of bending direction, its result, above-mentioned hole peripheral part 1c forms tubular hub portion 6 along the outer peripheral face distortion of drift 12a at central part.In the bending operation of these some steps, the inner face that forms the teat 12c of ring-type on the 1e of outer peripheral edges portion of blank 1 and the punch holder 12b of counterdie 12 contacts, radially the extension of foreign side is restricted, thereby, blank 1 fully can not be towards foreign side's relief radially, but make a concession, so can guarantee the enough thick and line part length long enough of the wall thickness of this tubular hub portion 6 towards above-mentioned tubular hub portion 6 sides.
As shown in Figure 8, through above each operation, can obtain the sheet material system belt pulley 7 of integrally formed hub portion 6, the inner diameter d of its tubular hub portion 61 is little to about the 12mm, projecting height h is long to about 35～36mm, and this belt pulley can be effective as crank pulley and use.
The formation method of poly-v pulleys is described with reference to the accompanying drawings, as the 1st embodiment of the formation method of the present invention's the 2nd sheet material system belt pulley.
Shown in Fig. 9 A, in crooked (pull and stretch) operation, the flat blank 1 of circle shape metal system places on the counterdie of being made up of drift 2a and punch holder 2b 2, subsequently, make this counterdie 3 near each other by forcing press with the patrix 3 that is constituted by punch die 3a and die holder 3b, shown in Fig. 9 B, above-mentioned metal base material 1 integral body is dark to the outstanding layback of hub portion, make its general curved become circular-arc convex.The curved shape of this moment is that the shape by the inlet conical surface 3b1 of the die holder 3b of the front end shape of the drift 2a of counterdie 2 and patrix 3 is determined that this is same as the previously described embodiments.
Then, as shown in figure 10, above-mentioned curved blank 1 is placed on the special-purpose perforated seat 4, in this state, use the perforating tool 5 of lathe and drilling machine, form the hole 5A about diameter 4～5mm at its top.
Subsequently, use with above-mentioned bending (pull and stretch) operation in different metal patterns, the 1e of outer peripheral edges portion that roughly is the blank 1 of arc-shaped bend contacts with the inner face of the teat 12c that forms ring-type of the punch holder 12b of counterdie 12, the blank court radially extension of foreign side is restricted, this state is shown in Figure 11 A and Figure 11 B, by making counterdie 12 and patrix 13 with drift 12a1 that plunging uses near each other, the peripheral part 1c of above-mentioned hole 5A is outstanding towards the bending direction of blank 1.
Transfer to bending (attenuate pull and stretch) operation that forms the tubular hub portion below.Shown in Figure 12 A and 12B, this bending (attenuate pull and stretch) operation is to use attenuate pull and stretch special punch 12a, make patrix 13 and counterdie 12 near each other, the 1e of outer peripheral edges portion of above-mentioned blank 1 and on the opposite direction of sweep 1b between the hole peripheral part 1c of preceding operation plunging processing, be thinned pull and stretch and bending at bending direction, the above-mentioned sweep 1b of result forms par 8 and tubular hub portion 6, and to be above-mentioned hole peripheral part 1c form at central part along the outer peripheral face distortion of drift 12a this hub portion 6.In this bending operation, the 1e of outer peripheral edges portion of base material 1 also contacts with the inner face of the projection 12c that forms ring-type of the punch holder 12b of counterdie 12, the blank court radially extension of foreign side is restricted, thereby blank 1 fully can not be towards radially foreign side's yielding, can only extend to above-mentioned tubular hub portion 6 sides, thereby can guarantee that the wall thickness of tubular hub portion 6 is enough thick.
After the above-mentioned bending operation, shown in Figure 13 A and 13B, carry out the wheel hub finishing step, it is to use fine finishining special punch 12a2 and die shoe 13b2, from the end face 6a of the above-mentioned tubular hub portion 6 of axial compression, so that 6 one-tenth projecting heights of setting of this tubular hub portion.
By above each operation, as shown in figure 14, can obtain the middle blank 10 of sheet material system poly-v pulleys, tubular hub portion 6 is formed on its central part, form par 8 between this hub portion 6 and the 1e of outer peripheral edges portion, this tubular hub portion 6 forms as one with par 8, just transfer to below use this in the middle of blank 10, form the operation of poly-V groove, below the formation operation of explanation poly-V groove in its periphery wall portion.
At first, form the wall thickening operation of the periphery wall portion of poly-V groove.As shown in figure 15, make the counterdie 14 and the patrix 15 of the above-mentioned middle blank 10 of clamping near each other, pressurizeed in the par 8 of middle blank 10 from its thickness of slab direction by forcing press.Like this, the layer faces outwards of par 8 week side flow, make the wall thickening of the outer peripheral portion 10a of blank 10.At this moment, above-mentioned tubular hub portion 6 positions roughly are limited, and its main degree and wall thickness almost do not change, and have only a part of material of above-mentioned par 8 to flow.
Then carry out above-mentioned by the cutting forming operation of the 10a of periphery wall portion of wall thickening.This cutting forming operation as shown in figure 16, par 8 except that the heavy wall periphery wall 10a of portion and hub portion 6 with revolution internal mold 16 and the above-mentioned middle blank 10 of revolution patrix 17 clampings, by the revolution of revolution internal mold 16 and revolution patrix 17, blank 10 whole revolutions in the middle of making.And, the middle body of the heavy wall periphery wall 10a of portion of blank 10 makes the V-arrangement cutting teat 18a revolution that the outer peripheral face of seaming roll 18 forms on one side from the outside in the middle of this is rotating, push on one side, incision gyroaxis core side cuts into the V shape with the above-mentioned heavy wall periphery wall 10a of portion.
Subsequently, as shown in figure 17, revolution by above-mentioned revolution internal mold 16 and revolution patrix 17, blank 10 whole revolutions in the middle of making on one side, one side makes seaming roll 19 revolutions, the extruding of wide cut periphery wall shaping usefulness from its outside on the 10a of periphery wall portion that is cut into the V shape of this rotating middle blank 10, at the periphery roll extrusion formation wide cut periphery wall 10b of portion of above-mentioned middle blank 10.And above-mentioned cutting forming operation and wide cut perisporium forming process both can be shaped simultaneously with common mould, also can be shaped separately with different moulds respectively.In addition, be not limited to once-forming, also can just be shaped through several times.
At last, carry out on the above-mentioned established wide cut periphery wall 10b of portion, forming the poly-V groove operation.This operation with turning round internal mold 20 and the par 8 except that the wide cut periphery wall 10b of portion and the hub portion 6 of turning round the above-mentioned middle blank 10 of patrix 21 clampings, by revolution internal mold 20 and the revolution of turning round patrix 21, makes middle blank 10 integral body revolutions as shown in figure 18.And, from this rotating in the middle of the outside of the wide cut periphery wall 10b of portion of blank 10, the concavo-convex forming section 22a that forms on the outer peripheral face of seaming roll 22 is pushed while turning round, incision gyroaxis core side, the poly-V groove 11 that rolling forming is made of plurality of V shape groove on the above-mentioned wide cut periphery wall 10b of portion.And, though this poly-V groove 11 also can be through a rolling forming, but preferably through the rolling forming of several times (2～4 times), the latter comprises poly-V groove shaping front travel and finishing step, finishing step is that the poly-V groove that will pass through the blank 10 of poly-V groove shaping front travel further imposes roll extrusion, as requested its degree of depth and spacing is carried out fine finishining.
Below, with reference to the formation method of description of drawings poly-v pulleys, as the 2nd embodiment of the present invention's the 3rd sheet material system belt pulley formation method.
In the 2nd embodiment, as shown in figure 14, heart portion is formed with tubular hub portion 6 therein, form par 8 between this hub portion 6 and the 1e of outer peripheral edges portion, tubular hub portion 6 forms as one with par 8, the operation of middle blank 10 that obtains this sheet material system poly-v pulleys is with identical with reference to said above-mentioned the 1st embodiment of Fig. 9 A, 9B～Figure 13 A, 13B, so these illustrate omission, only to after this operation different with the 1st embodiment, promptly the operation that forms poly-V groove in the periphery wall portion of middle blank 10 explains.
At first, carry out the par pressurization operation of above-mentioned middle blank 10.As shown in figure 19, clamping is close on the counterdie 23 of blank 10 and the patrix 24 in the middle of above-mentioned, pressurizes from the flat 8 of thickness of slab direction to middle blank 10 with forcing press.Thereby the material that makes par 8 is to the periphery side flow, and extruding is extended so that the outer diameter D of blank 10 meets the requirements.At this moment, above-mentioned tubular hub portion 6 positions roughly are restricted, and its height and wall thickness almost do not change, and a part of material of only above-mentioned par 8 takes place to flow.
Subsequently, carry out perisporium and form operation, use counterdie 25 shown in Figure 20 and patrix 26, make counterdie 25 and patrix 26 approaching by forcing press, outer end 8a to above-mentioned par 8 carries out pressure processing, make this outer end 8a bend towards a side of belt pulley axis of rotation direction, specifically court and the not same lateral bending song of the projected direction of tubular hub portion 6 form poly-V groove formation surrounding wall portion 10c.
Carry out on the poly-V groove of above-mentioned formation forms with surrounding wall portion 10c, forming the operation of poly-V groove at last.This poly-V groove formation operation and the 1st embodiment shown in Figure 180 are roughly the same, as shown in figure 21, with revolution internal mold 27 and 28 clampings of revolution patrix above-mentioned in the middle of the poly-V groove that removes of blank 10 form par 8 and the hub portion of using the surrounding wall portion 10c 6, by the revolution of revolution internal mold 27 and revolution patrix 28, blank 10 whole revolutions in the middle of making.And, form the outside of using surrounding wall portion 10c from the poly-V groove of this rotating middle blank 10, make the concavo-convex forming section 29a revolution that forms on the outer peripheral face of seaming roll 29 on one side, the gyroaxis of extruding incision on one side core side, roll extrusion forms the poly-V groove 11 that is made of plurality of V shape groove on above-mentioned surrounding wall portion 10c.In addition, with regard to the moulding of this poly-V groove 11, though can be as mentioned above like that by a rolling forming, the rolling forming of several times (2～4 times) preferably certainly, the latter comprises poly-V groove shaping front travel and finishing step, finishing step is that the poly-V groove through the blank 10 of poly-V groove shaping front travel is further imposed roll extrusion, the fine finishining degree of depth as requested and spacing.
In the embodiment of the hub portion formation method of the present invention's the 1st sheet material base material, can certainly carry out with the 1st embodiment of the present invention's the 2nd sheet material system belt pulley formation method and the 2nd embodiment in identical plunging manufacturing procedure (with reference to Figure 11) and wheel hub finishing step (with reference to Figure 13).
In addition, though the formation method with regard to poly-v pulleys in the 1st embodiment of the formation method of the 2nd sheet material system belt pulley of the present invention and the 2nd embodiment is described, also be applicable to the formation of v-shaped pulley, and then be applicable to that also perisporium is the formation of wide cut, smooth flat-belt pulley with single V-shaped groove.
As mentioned above, the hub portion formation method of sheet material base material of the present invention is the integrally formed technology to the outstanding tubular hub portion of a side of a kind of central part at plate-shape metal base material, by a kind of bending machining combination, can make thickness of slab not too thin, and use subpress, even the occasion that internal diameter is little also can form the hub portion of guaranteeing enough wall thickness and projecting height.In addition, form technology, the method that forms the belt pulley of sheet material system cheaply of poly-v pulleys etc. with the least possible operation is provided according to this hub portion.
Claims (5)
1. the hub portion formation method of a sheet material base material forms towards one of this blank side-prominent tubular hub portion at the central part of plate-shape metal base material; It is characterized in that;
This method comprise make above-mentioned metal base material towards the outstanding side of hub portion bend to convex bending operation, this sweep between the perforation process of curved blank overp0unch and the outer peripheral edges portion that makes above-mentioned blank in blank outer peripheral edges portion under the state that radially extension of foreign side is restricted and the hole peripheral part towards the bending operation of the direction bending opposite, formation tubular hub portion with its bending direction.
2. according to the hub portion formation method of the sheet material base material described in the claim 1, it is characterized in that: setting makes the peripheral part in above-mentioned hole towards the outstanding plunging operation of blank bending direction between the bending operation of above-mentioned convex bending operation and formation tubular hub portion.
3. according to the hub portion formation method of the sheet material base material described in the claim 1, it is characterized in that: behind the bending operation of above-mentioned formation tubular hub portion, finishing step is set, the end face of formed tubular hub portion from the above-mentioned bending operation of axial compression is the projecting height of setting.
4. sheet material system belt pulley formation method along with the central part at plate-shape metal base material forms towards the side-prominent tubular hub portion of this blank one, forms V-shaped groove in the periphery wall portion of above-mentioned blank; It is characterized in that:
Comprise and make above-mentioned metal base material bend to the bending operation of convex towards the outstanding side of hub portion, at this perforation process of curved blank overp0unch, the sweep court direction bending opposite between the outer peripheral edges portion that makes above-mentioned blank in blank outer peripheral edges portion under the state that radially extension of foreign side is restricted and the hole peripheral part with its bending direction, form the bending operation of par and tubular hub portion, from the thickness of slab direction to bending operation after the above-mentioned par pressurization of blank so that the wall thickening operation of outer peripheral portion wall thickening and in the V-shaped groove forming process of the periphery wall portion shaping V-shaped groove of this wall thickening.
5. sheet material system belt pulley formation method along with the central part of plate-shape metal base material forms towards the side-prominent tubular hub portion of this blank one, forms V-shaped groove in above-mentioned blank periphery wall portion; It is characterized in that:
Comprise and make above-mentioned metal base material bend to the bending operation of convex towards the outstanding side of hub portion, at this perforation process of curved blank overp0unch, the sweep court direction bending opposite between the outer peripheral edges portion that makes above-mentioned blank in blank outer peripheral edges portion under the state that radially extension of foreign side is restricted and the hole peripheral part with its bending direction, form the bending operation of par and tubular hub portion, from the thickness of slab direction to bending operation after the above-mentioned par pressurization of blank extend par pressurization operation with the external diameter that need to obtain, outer end, the par lateral bending that this is pressurized is to a side of belt pulley axis of rotation direction, forming V-shaped groove forms with the perisporium formation operation of surrounding wall portion and the V-shaped groove forming process that forms V-shaped groove in surrounding wall portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93107652A CN1050075C (en) | 1993-06-30 | 1993-06-30 | Method forming of hub from block of plate and belt wheel made from plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93107652A CN1050075C (en) | 1993-06-30 | 1993-06-30 | Method forming of hub from block of plate and belt wheel made from plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1096974A CN1096974A (en) | 1995-01-04 |
| CN1050075C true CN1050075C (en) | 2000-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93107652A Expired - Fee Related CN1050075C (en) | 1993-06-30 | 1993-06-30 | Method forming of hub from block of plate and belt wheel made from plate |
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| CN (1) | CN1050075C (en) |
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| CN102489658B (en) * | 2011-12-28 | 2014-04-16 | 广东港润机电科技有限公司 | Method for machining belt wheel with wheel hub by spinning |
| US20140047889A1 (en) * | 2012-08-20 | 2014-02-20 | Ford Global Technologies, Llc | Method and Apparatus for Sharp Bending High Strength Panels |
| US10239110B2 (en) * | 2012-12-11 | 2019-03-26 | Topy Kogyo Kabushiki Kaisha | Method of manufacturing a large- or medium-sized wheel disk and a product manufactured thereby |
| JP6051052B2 (en) | 2013-01-11 | 2016-12-21 | 株式会社エフ・シー・シー | Press part molding method, press part manufacturing method, and press part molding die |
| CN103331575B (en) * | 2013-06-07 | 2015-11-25 | 南通福乐达汽车配件有限公司 | A kind of moulding process of two-way tubular boss wheel hub |
| CN104889238B (en) * | 2015-05-20 | 2017-07-07 | 苏州铭峰精密机械有限公司 | Deep drawn axle sleeve moulding process |
| JP6849212B2 (en) * | 2016-11-24 | 2021-03-24 | 株式会社カネミツ | Manufacturing method of metal parts |
| CN114618948B (en) * | 2022-03-25 | 2023-10-20 | 富泰华工业（深圳）有限公司 | Forming device and bending forming method |
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| JPS58337A (en) * | 1981-06-24 | 1983-01-05 | Toshiba Mach Co Ltd | Manufacture of alloy wheel for vehicle |
| JPH01218729A (en) * | 1988-02-29 | 1989-08-31 | Sanden Corp | Manufacture of rotor main body for solenoid clutch |
| JPH01278922A (en) * | 1988-04-28 | 1989-11-09 | Victor Co Of Japan Ltd | Manufacture of lever device |
| US5174025A (en) * | 1990-09-01 | 1992-12-29 | Nippon Densan Corporation | Method of manufacturing a hub for a spindle motor |
-
1993
- 1993-06-30 CN CN93107652A patent/CN1050075C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58337A (en) * | 1981-06-24 | 1983-01-05 | Toshiba Mach Co Ltd | Manufacture of alloy wheel for vehicle |
| JPH01218729A (en) * | 1988-02-29 | 1989-08-31 | Sanden Corp | Manufacture of rotor main body for solenoid clutch |
| JPH01278922A (en) * | 1988-04-28 | 1989-11-09 | Victor Co Of Japan Ltd | Manufacture of lever device |
| US5174025A (en) * | 1990-09-01 | 1992-12-29 | Nippon Densan Corporation | Method of manufacturing a hub for a spindle motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1096974A (en) | 1995-01-04 |
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