CN86102189A - Edge folding process for cold pressed bi-metal reel pleeve - Google Patents
Edge folding process for cold pressed bi-metal reel pleeve Download PDFInfo
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- CN86102189A CN86102189A CN86102189.4A CN86102189A CN86102189A CN 86102189 A CN86102189 A CN 86102189A CN 86102189 A CN86102189 A CN 86102189A CN 86102189 A CN86102189 A CN 86102189A
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Abstract
Edge folding process for cold pressed bi-metal reel pleeve the invention belongs to a kind of reel axle sleeve flange cold punching technology, and it is bimetallic being specially adapted to manufactured materials, heavy wall, the axle sleeve of band thrust side, non-notch or do not have the sector shape breach on the thrust side after the moulding; Become on the sired results preface die cylinder concave surface and protect the rectangular square key of seam; The reel ends outer wall is processed a circular arc technology groove makes flange easy; Crackle is not given birth at neck inside corner place; The drift fluted flange outer rim of protecting in flat limit can not broken.Technology is rationally easily grasped, the yield rate height, and the product mechanical strength is good, and the life-span is long.
Description
The present invention relates to a kind of reel axle sleeve flange cold punching technology, to be specially adapted to manufactured materials be bimetallic, and heavy wall is with the axle sleeve flanging process of thrust side radially.
Employed radially thrust sliding shaft sleeve on the internal combustion engine usually uses the bimetallic plate to be rolled into the reprocessing of tube back and goes up the thrust side.This plate is by doing metal backing layer and wear-resistant alloy layer these two kinds of physical properties, chemical composition, mechanical strength and nonhomogeneous hardnesses bigger metlbonds together.For example a kind of aluminium that is used for internal combustion engine bearing, bimetal copper-steel plate, the material of steel back layer are that No. 08 steel wear-resistant aluminum alloy floor adopts 5～0.6 antimony magnaliums, and its difference of hardness is at Brinell hardness HB150 kilogram/millimeter
2To HB230 kilogram/millimeter
2Between.It is rolled into tube, and the inwall wear-resistant alloy layer is soft, and the outer wall metal level is hard, and when reel ends was translated into the thrust side, when especially the drum wall thickness rate was big, cold stamping load was big, brings very big difficulty to flanging process.
Usually the way of taking is to avoid at the reel upper overturning, but thrust side, end and reel axle sleeve are made the part of two bodies, and then they are combined into one.
The way that cylindrical shell and thrust side are combined into one is: a kind of is that a seam is done in a sleeve body end of spooling, and is riveted into one with the thrust side internal orifice again; Another kind method is in one section thin wall cylinder of sleeve body end processing of spooling, again this section is translated into side-strut, and antifriction alloy on casting around side-strut is then made the thrust side; Also have a kind of way to be, sleeve body end face of spooling and the ring-type thrust side that processes are become one through friction welding.More than three kinds of methods, manufacturability is good inadequately, yield rate is not high enough during production in enormous quantities, when axle sleeve assembled on machine and keeps in repair, sleeve body separated easily with the thrust side and comes off.
More advanced method is a cold stamping reel endoporus outward flanging method.In stamping process, when the bending of die shoulder was turned up endoporus, to form sidewall be the thrust side by one section of reel ends is elongated along peripheral direction one section of reel ends.
Existing known cold stamping bimetallic reel axle sleeve (existing abroad finished product) flanging process generally is such: the bimetallic plate is become contour edge neat square (or rectangle) according to the forming dimension stamping-out.This shape plate becomes through giving curved operation
Type becomes through dark curved operation again
Type then is into the garden operation plate is rolled into the garden cylindrical shell, passes through flat limit at last again through punching press endoporus outward flanging (or add before this operation give overturning process together), becomes the sidewall thrust side after the operation of positive garden, finishes flange.
The weak point of this technology is, the stamping-out blank shape is square (or rectangle) of neat in edge rule, this shape is not the planar development figure of the three-dimensional shape of complete band thrust side reel axle sleeve, like this certainly will be behind square (or rectangle) plate reel flange, the seam crossing that is positioned on the thrust side has a covering of the fan table breach, the fan-shaped center of radius of this fan-like pattern breach stretches to cylinder inner surface, influence tube inwall and between centers formation pressure.Though the covering of the fan breach is made garden arc location lock-joint so that settle alignment pin, in the time of can not stopping up work fully in the tube in the oil reservoir excessive its of oil influence oil pressure and do not allow to look hurriedly.Moreover, at seam crossing the location lock-joint is set, reasonable inadequately on the structure, also be unallowed in the standard of China.
The metal cylinder material when the die shoulder is crooked, this neck position tube material outside is action of compressive stress by bending, and inside material is subjected to the effect of tensile stress, when bending stress greater than tensile stress, when surpassing the material extending limit, neck inside corner place material can crack.The general way that strengthens the neck flexion radius that adopts.When bending radius just can not crack greater than the minimum bending radius (R/t) of being bent material.The problem that the macrobending radius is brought is, allows or during the standard bending radius, then is reprocessed into the minor radius in knee when being surpassed by the minimum bending radius of curved material, can bring neck attenuate, intensity to descend, reduce service life.
Purpose of the present invention, the radially method of thrust side axle sleeve flange of a kind of cold stamping processing bimetallic is provided, in this way, not only can produce thrust side and reel all-in-one-piece bimetallic flanger bearing bush, and on the thrust side behind the flange, there are not breach or a sector shape breach, the no bending radius in the neck outside, quilt are turned over to meet at right angles with the cylindrical shell outside after the barrel outside becomes lateral margin.Be specially adapted to the processing of thick-walled metal reel flanger bearing bush.
Main points of the present invention are as can be seen come from cold stamping bimetallic reel of the present invention thrust side axle sleeve flanging process order.Concrete process sequence of the present invention is as follows:
1, stamping-out (1).Get qualified smooth bimetallic plate, its stamping-out become required, radially the thrust side is unnotched for reel, the planar development figure of flanger bearing bush three-dimensional shape.Its planar development figure can be described as: isosceles trapezoid and square (or rectangle) synthetic.Base on its isosceles trapezoid (little base) coincide on one side with square (or rectangle), and the part of trapezoidal two hypotenuses and trapezoidal bottom (big base) both sides is formed symmetrical right angled triangle flange, as the symmetrical wing of planar development figure.Its symmetrical right angled triangle area sum is guaranteed behind the reel flanging forming non-notch or sector shape breach behind the joint close of thrust side.
2, give curved (2).Blank operation is dashed good plate, give curving
Type.What be about to have the right angled triangle flange treats the seam limit, symmetrical to curving the garden arcuation, and wear-resistant alloy layer is bent in the inboard.Its garden arc radius is into the radius in garden, and the length of garden arc respectively is 1/4 one-tenth garden arc length.
3, dark curved (3).To give in the curved operation and curving
The plate of type is placed on the arc die of garden and aims at drift
It is crooked that the open and flat part symmetrical center line of template material, the open and flat part of punching press make it, and plate this moment cross section after dark bending becomes
The cylindrical shell that cracks of type.
4, Cheng Yuan (4).Be processed into cross section after will bending operation deeply
The cylindrical shell that cracks of type is encircled the one-tenth garden cylindrical shell that strikes out the Cylinder shape with splitting die (two concave surfaces become whole Cylinder, and its diameter is identical with one-tenth garden diameter).Have one on the concave surface of one die along the rectangular slightly square key of the band of axis direction, protrude in concave surface.Projecting height is greater than thickness of slab.The width of the rectangular slightly square key of band is plate two right angled triangle flange projecting height sums.The effect of the rectangular slightly square key of band has guaranteed that gaping of joints makes two right angled triangle flanges indeformable in becoming garden operation processing.
5, cutting garden arc technology groove (5).At the outer wall that is rolled into into tube end, garden, be positioned at the corner for the treatment of crooked neck foundation, process a garden arc technology groove, can process garden arc technology groove with turning.Tube one border, arc technology groove coiled garden, garden, the garden face of its garden, border arc technology groove with become the garden spool axis perpendicular.Also to guarantee into tube former gaping of joints in garden in the operation.As with planing operation garden arc technology groove the time, carry out after can being placed on stamping-out to this operation.
6, give flange (6).With conical surface garden cone angle is the endoporus center that outer wall that 90 °～170 ° cone drift is aligned to the garden reel has garden that end of arc technology groove, along the axis direction punching press, make into garden reel port endoporus and translate into bell mouth shape awl tube outward, its awl tube angle is 150 °～160 ° with identical i.e. 90 °～170 ° best angles of cone angle of the drift conical surface.
7, flat limit (7).The drift (the groove medial surface is that garden cylinder endless belt is vertical with the groove baseplane, and garden endless belt diameter and thrust side outer rim are with big) that will have groove makes groove alignment bell mouth shape awl mouth, makes the awl tube turn up into the spool body lateral margin.The effect of groove drift makes the tube material that turns up limit its abduction in groove when being punching press, prevent the edge break phenomenon.
8, Zheng Yuan (8).To be exactly the spool body that will translate into the thrust side encircle slit that punching press makes thrust side and spool body and close up and be in the same place with splitting die this procedure.This operation end of a period flange is promptly accused and is finished.
Main points of the present invention as can be seen are from above-mentioned technology:
1, stamping-out (1) bimetallic plate derived geometrical figure, it is exactly non-notch or do not have the planar development figure of the reel flanger bearing bush of sector shape breach on the thrust side, the plate of this figure has guaranteed in forming process after having turned over the thrust side, the geometric figure of thrust side is perfect, breach or sector shape breach can not occur.
2, on the garden cylindrical concave of stamping cavity die the rectangular slightly square key of outstanding band is arranged in Cheng Yuan (4) operation, kept becoming the gap of garden socket joint tape edge, make two symmetrical right angled triangle flanges of seam limit homonymy, be not out of shape because of striking out the garden at Cheng Yuanzhong, seam crossing non-notch or sector shape breach are laid good basis after being shaped to the thrust side.
3, added in the stamping procedure and cut garden arc technology groove (5) operation together.The reel outer wall has garden arc technology groove that two benefits are arranged, and the one, the stress when reducing reel outer wall neck flexion, the unlikely reel neck inwall corner that makes cracks; Another benefit is that outer wall and the reel drum outer wall of translating into lateral margin meet at right angles, and no bending radius also can not reduce the mechanical strength of whole cylindrical shell.
4, overturning process is with two steps: give flange (6) and flat limit (7).Giving flange and be earlier reel ends is translated into 90 °～170 ° optimum values is 150 °～160 ° bell mouth shape awl tube, makes the bell mouth shape awl tin translate into intact lateral border (thrust side) with the groove drift that has had the safe edge effect in the operation of flat limit then.
5, singly not to be suitable for manufactured materials be bimetallic, the single-ended flanger bearing bush that has thrust side (thrust side does not have the sector shape breach) of reel to cold stamping method of the present invention, and be suitable for making the flanger bearing bush that the reel two ends have thrust side (thrust side non-notch) or the bearing shell of these two kinds of forms.Particularly make heavy wall.
Accompanying drawing be cold punching technology of the present invention order and processed bimetallic, reel is single-ended to have the flanger bearing bush forming process schematic diagram of thrust side (thrust side non-notch or do not have the sector shape breach):
The 1-stamping-out.Blank shape behind the stamping and blanking.
2-gives curved.The plate cross section becomes after this operation
Type.
3-is curved deeply.The plate cross section becomes after dark curved operation
Type.
4-becomes the garden.Plate is rolled into gaping of joints after this operation bigger, but the two triangle flange does not have the garden column-shaped barrel of distortion.
5-cutting garden arc technology groove.
6-gives flange.(part is for axially analysing and observe) visible reel ends becomes bell mouth shape awl tube after this operation.
The flat limit of 7-.(part is for axially analysing and observe) reel ends is translated into lateral border after this operation, but seam is still gapped.
The positive garden of 8-.(part is axial cutaway view) reel joint close is finished flange after this operation.
The inventor uses cold punching technology of the present invention, produces that the used material of main shaft is aluminium, the single-ended radially thrust side of bimetal copper-steel (YB699-70) reel (thrust side does not have the sector shape breach) flanger bearing bush on the homemade X-195 internal combustion engine, and its process sequence is as follows:
1, stamping-out (1).Get qualified smooth aluminium, the bimetal copper-steel plate, stamping-out rolling barrel dliameter is to the planar development figure of the three-dimensional shape of thrust flanger bearing bush.Its planar development figure is described as: isosceles trapezoid and square (or rectangle) synthetic, trapezoidal upper base (little base) coincide on one side with square (or rectangle), and the part on trapezoidal two hypotenuses and trapezoidal bottom (big base) becomes symmetrical right angled triangle (flange) both wings of planar development shape.
2, give curved (2).With the plate that blank operation is cut out, give curving
Type.What be about to have the right angled triangle flange wing treats seam limit part, curves garden arcuation (the wear-resistant aluminum alloy layer is bent in the inboard) relatively.Two garden arcs respectively are 1/4 one-tenth garden arc length, and diameter is identical with one-tenth garden diameter.
3, dark curved (3).To give in the curved operation and curve cross sections
The plate of type is placed on the die that concave surface becomes the garden arc, and drift is aimed at
It is crooked that the open and flat part of symmetrical center line punching press of template material makes it, and at this moment whole plate becomes after dark bending
The type cylindrical shell that cracks.
4, Cheng Yuan (4).Being processed into cross section after will bending deeply is
The cylindrical shell that cracks of type is split die (two concave surfaces become whole Cylinders, and its diameter is identical with one-tenth garden diameter) with two and is encircled and strike out into the garden cylindrical shell.Have one on the concave surface of one of die along axis direction band rectangular square key slightly, protrude in concave surface.The width of the rectangular slightly square key of band has guaranteed plate two right angled triangle flanges contacts and indeformable.The length of rectangular square key is suitable with the seam limit.
5, cutting garden arc technology groove (5).Be rolled into into 17～19 millimeters of garden tube end face outer walls (band right angled triangle flange one side) and locate (this is the corner of waiting to bend to the neck foundation) turning to process a garden arc radius be 3～4 millimeters garden arc technology groove being positioned at, tube one border, coiled garden, border, groove garden face with become garden tube axis normal.
6, give flange (6).With conical surface garden cone angle is that 90 °～170 ° optimum values are that 150 °～160 ° cone drifts are aligned to the garden tube endoporus center of (outside, end has garden arc technology groove), along the axis direction punching press, make into garden reel port endoporus and translate into bell mouth shape awl tube outward, its awl tube garden cone angle is identical with cone drift garden cone angle.
7, flat limit (7).Drift (groove is that the garden cylinder is vertical with the groove baseplane) the die mouth that will have groove is aimed at bell mouth shape awl tube drift, and the awl tube is turned up or the cylindrical shell lateral margin.
8, Zheng Yuan (8).Become the die of Cylinder to encircle punching press with splitting concave surface, translate into the spool body of thrust side lateral margin, cylindrical shell is closed up together together with the slit, thrust side.
Positive garden (8) operation ends, and flange is promptly accused and finished.The interior profile of the spool body behind spot welding tube seam and machining flange is finished product to size again.
Documents of correction
Claims (2)
1, a kind ofly will roll into tube behind the bimetallic plate stamping-out, roll up the flanging process of the cold stamping manufacturing band thrust side axle sleeve of thrust side again, it is characterized in that processing step comprises:
(1) planar graph of blank operation [1] plate that falls is: thrust side seam crossing non-notch or do not have the planar development figure of the flanger bearing bush three-dimensional shape of sector shape breach, and the last base (little base) that can be described as isosceles trapezoid coincide on one side with square (or rectangle) and forms;
(2) giving curved operation [2] is that the plate that above-mentioned stamping-out is good gives and curves cross section and be
Type is about to the part that plate is treated two limits of cigarette seam, and symmetrical is circular-arc to curving, and its best circular shape is: arc radius becomes the cylinder radius of a circle for becoming in the sired results preface [4], arc length respectively is the arc length of 1/4 one-tenth cylinder circle;
(3) curved deeply operation [3] is to curve cross section in the curved operation [2] and be giving
The open and flat part of the plate of type bends to circular-arcly, and plate becomes cross section and is after this operation
The type tube that cracks;
(4) becoming sired results preface [4] is that the cross section that curved deeply operation [3] obtains is become
Type crack the tube struck out the seam cylindrical tube, the used concave surface of punching press is the die of splitting on the face of cylinder, and the rectangular slightly square key of the band that protrudes in concave surface of a protection reel gaping of joints is wherein arranged on the concave surface of a die;
(5) cutting circular arc technology groove operation [5] is to have the outer wall of seam cylindrical tube to treat crooked neck root place above-mentioned, processes the circular-arc technology groove in a border;
(6) giving overturning process [6] will have seam cylindrical tube outer wall to have the end punching press of circular-arc technology groove, and an end endoporus is turned up becomes bell mouth shape circular cone tube, and its coning angle is that 90 °～170 ° best coning angles are 150 °～160 °;
(7) flat limit operation [7] drift that will have a groove is aimed at horn-like cone ports punching press, and the circular cone tube is turned up becomes the spool body lateral margin, and the groove side of its groove drift is the face of cylinder, and vertical with the bottom land plane;
(8) positive sired results preface [8] is encircled the cylindrical shell that obtains after the flat limit of the punching press operation [7] with splitting die, makes cylindrical shell and end lateral margin (thrust side) slit joint close.
2,, it is characterized in that on the thrust side of single-ended or band thrust side, the two ends axle sleeve of prepared bimetallic reel its seam crossing non-notch or do not have the sector shape breach by the described cold punching technology step of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86102189.4A CN1003704B (en) | 1986-04-06 | 1986-04-06 | Edge folding process for cold pressed bi-metal reel pleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86102189.4A CN1003704B (en) | 1986-04-06 | 1986-04-06 | Edge folding process for cold pressed bi-metal reel pleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86102189A true CN86102189A (en) | 1987-10-21 |
| CN1003704B CN1003704B (en) | 1989-03-29 |
Family
ID=4801651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN86102189.4A Expired CN1003704B (en) | 1986-04-06 | 1986-04-06 | Edge folding process for cold pressed bi-metal reel pleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1003704B (en) |
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- 1986-04-06 CN CN86102189.4A patent/CN1003704B/en not_active Expired
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Also Published As
| Publication number | Publication date |
|---|---|
| CN1003704B (en) | 1989-03-29 |
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