CN1112465A - Rotary forging apparatus - Google Patents
Rotary forging apparatus Download PDFInfo
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- CN1112465A CN1112465A CN95102456A CN95102456A CN1112465A CN 1112465 A CN1112465 A CN 1112465A CN 95102456 A CN95102456 A CN 95102456A CN 95102456 A CN95102456 A CN 95102456A CN 1112465 A CN1112465 A CN 1112465A
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- forging die
- rim
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- forging
- format roll
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- 238000005242 forging Methods 0.000 title claims abstract description 179
- 238000003825 pressing Methods 0.000 claims abstract description 13
- 238000007493 shaping process Methods 0.000 claims abstract description 10
- 238000000465 moulding Methods 0.000 claims description 35
- 230000002093 peripheral effect Effects 0.000 claims description 27
- 230000000881 depressing effect Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 12
- 230000005540 biological transmission Effects 0.000 description 11
- 239000000047 product Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 7
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- 238000004519 manufacturing process Methods 0.000 description 2
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- DEXFNLNNUZKHNO-UHFFFAOYSA-N 6-[3-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperidin-1-yl]-3-oxopropyl]-3H-1,3-benzoxazol-2-one Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1CCN(CC1)C(CCC1=CC2=C(NC(O2)=O)C=C1)=O DEXFNLNNUZKHNO-UHFFFAOYSA-N 0.000 description 1
- 206010020852 Hypertonia Diseases 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
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- 229910045601 alloy Inorganic materials 0.000 description 1
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/28—Making machine elements wheels; discs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/02—Making articles shaped as bodies of revolution discs; disc wheels
- B21H1/04—Making articles shaped as bodies of revolution discs; disc wheels with rim, e.g. railways wheels or pulleys
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J9/00—Forging presses
- B21J9/02—Special design or construction
- B21J9/025—Special design or construction with rolling or wobbling dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
- B21H1/10—Making articles shaped as bodies of revolution rings of restricted axial length rims for pneumatic tyres
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
A rotary forging apparatus comprises a first rotary ram (301) having a conical pressing surface and a slanting rotary axis, a second rotary ram (302) facing the first ram (301) and having a vertical rotary axis, and a shaping roller equipped beside the rams. The apparatus forges a product from a mass of material (workpiece 10) by sandwiching the workpiece (10) between the first ram (301) and the second ram (302), pressing the workpiece (10) with the rams which rotate synchronously, thinning the workpiece (10) into the disc part of a product, pressing the excluded material out of the rams with the shaping roller and the rams and shaping into the rim part. This invention provides a rotary forging apparatus which can prevent a generation of cracks or flashes on the disc part (1) or the rim part (11) when the apparatus forges a wheel having a rim part (11) which consists of a small rim part and a large rim part.
Description
The present invention relates to rotary forging apparatus, particularly a kind of rotary forging apparatus that is used to make belt wheel edge wheel disc, the rim part of this belt wheel edge wheel disc is made up of big rim part that forms at the round plate periphery and little rim part.
Adopt swaging to open announcement in clear 61-226132 number the Japanese patent gazette spy at the method or the device of the periphery formation rim part (11) of round plate (1).
As shown in Figure 1, this swaging method is that thick disk shape blank or short cylindrical shape blank (hereinafter referred to as workpiece (10)) are placed between the pressurization end face of the pressurization end face of the 1st forging die (301) of synchronous rotation and the 2nd forging die (302), uses this that forging die is processed as net shape with round plate (1) and rim part (11).This processes normally hot-working.
The pressurization end face shape set one-tenth of the 2nd forging die (302) adapts with the below inner peripheral surface of the following and rim part (11) of round plate (1).The rotation of the 1st forging die (301) has inclination (for example 2-5 degree) slightly with respect to the rotation of the 2nd forging die (302), and its whole pressurization end face slightly is coniform.The drift angle of this taper seat is to set like this; From vertical section, a hypotenuse of taper seat is a horizontal plane.In addition, from vertical section, the shape of the taper seat hypotenuse of the 1st forging die (301) is consistent with the shape of a top part that is equivalent to round plate (1) section.
In the interface of two forging dies, alternately insert thick format roll (21) and final molding roller (22).
The 1st operation of the prior art is placed on interface between the 1st forging die (301) and the 2nd forging die (302) to thick format roll (21) as shown in Figure 1, under this state, with above-mentioned two forging dies work (10) is pressurizeed, and is rotated forging.The 2nd operation is processed rim part (11) with final molding roller (22) as shown in Figure 2.
In the 1st operation, the 1st forging die (301) presses to the final position towards the 2nd forging die (302).Like this, be molded into the suitable portion of wheel rim (110) of the ring-type of rectangular cross section at round plate (1) periphery of net shape, the suitable portion of this wheel rim (110) is by thick format roll (21) moulding.
In the 2nd operation, the suitable portion with wheel rim of round plate (1) (110) is in by the state (not depressed state) of the 1st forging die (301) and the 2nd forging die (302) cramping, on one side synchronously rotation the 1st, 2 forging dies final molding roller (22) is pressurizeed to the suitable portion of wheel rim (110).Like this, as shown in Figure 2, the suitable portion of wheel rim (110) is processed to the rim part (11) of net shape.
Therefore, in this prior art, to the operation that is shaped to final belt wheel edge wheel disc, all workpiece (10) is remained in the 1st forging die (301) and the 2nd forging die (302) and process, so productivity is good from workpiece (10).
But, the method of this prior art, can only moulding resemble rim part (11) section configuration pulley etc. and be symmetrical in the product of round plate (1), and can not moulding as shown in figure 3 rim part (11) section configuration be asymmetric with the product of round plate (1).
Because during, near the central part of round plate (1) or its, can produce be full of cracks with above-mentioned the 1st suitable portion of operation moulding wheel rim (110).Its reason is as follows:
When pressing down, workpiece (10) is crushed the 1st forging die (301) towards the 2nd forging die (302).The outer peripheral face of workpiece (10) is by the surface forming of thick format roll (21).At this moment on the workpiece (10), the scope of being depressed by the pressurization end face of the 1st forging die (301) is shown in Figure 4 fan-shaped.Thick format roll (21) is docked at this fan-shaped circular-arc outer peripheral face central authorities that depress zone (101).Along with pressing down of the 1st forging die (301), workpiece (10) will outwards extend along radial direction, but this extension is stoped the thick format roll of following (21).
And depress the outer peripheral face in zone (101) and in the both sides of thick format roll (21) docking section, the extension of workpiece (10) is not prevented from, so as shown in Figure 4, prolongs radial direction and bloats laterally at this.Therefore, on the fan-shaped section of depressing zone (101) inside part,, be subjected to the radial direction compression stress repeatedly and the effect of the extension power that outwards extends when workpiece (10) outer peripheral face during by thick format roll (21).Its result will produce be full of cracks near this fan-shaped inside part of depressing zone (101) or its.
In addition, in the method for this prior art, along with the pressurization of the 1st forging die (301) and the 2nd forging die (302) to workpiece (10), dough extending, wherein a part stretches out in the disk forming section.This extension continue to extend arrive the surface of thick format roll (21) after, just wait the separation of branch ground and be filled in by in the 1st forging die (301), the 2nd forging die (302) and the space that slightly format roll (21) surrounds towards two directions summary up and down.
But, under situation shown in Figure 3, blank is full of between thick format roll (21) and the 1st forging die (301) by preceding half the operation of depressing.And at this moment, underfill blank between thick format roll (21) and the 2nd forging die (302).Be full of between thick format roll (21) and the 2nd forging die (302) from this state to blank, as implement the later half operation of depressing, just the suitable portion of the wheel rim that is shaped (110).In this later half operation, between thick format roll (21) that has been full of blank and the 1st forging die (301), also there is blank to clamp-on, so the hypertonia of this part, blank is extruded the minimum slit between the 1st forging die (301) and thick format roll (21).Like this, on the wheel rim of one side of product, can produce a large amount of burrs.
The present invention makes in view of the above problems, its objective is provides a kind of rotary forging apparatus, in this device, the pressurization end face that slightly is coniform pressurization end face and the 2nd forging die (302) of the 1st forging die (301) disposes in opposite directions, the axis of the 1st forging die (301) tilts with respect to the axis of the 2nd forging die (302), workpiece (10) is placed between the pressurization end face of the pressurization end face of the 1st forging die (301) and the 2nd forging die (302), and it is close in opposite directions to make the 1st, 2 liang of forging die limit rotate the limit synchronously; Workpiece (10) is pressurizeed and moulding round plate (1), simultaneously, be processed into the rim part (11) that with round plate link to each other with above-mentioned 2 forging dies handle from depressing the regional blank that stretches out to foreign side with format roll (2), it is characterized in that, even rim part (11) is made up of big rim part that is asymmetric with round plate (1) and little rim part, when utilizing whirligig moulding of the present invention, also can prevent near the central part of round plate (1) or its, to produce be full of cracks and prevent to produce burr in the wheel rim end.
The invention of claim 1
In order to address the above problem, technical scheme of the present invention is: the pressurization end face peripheral part of using at the shaping disc of the 2nd forging die (302), be formed for the wheel rim forming part of the little rim part of moulding, the outstanding annular wall (32) that is used for the little rim part ora terminalis of moulding from the outer peripheral edges of this wheel rim forming part towards the 1st forging die (301), rotatably mounted format roll (2) butt joint or near the upper end of above-mentioned annular wall (32).
The action of technique scheme is as follows:
The 1st forging die (301) and the 2nd forging die (302) are to workpiece (10) pressurization, and along with the carrying out of pressurization, workpiece (10) is crushed, its blank from the live end of two forging dies towards outside stretch out.This blank that stretches out extends outwardly, and its leading section arrives the trunk of format roll (2).The trunk of the 1st forging die (301) and the 2nd forging die (302) and format roll (2) make the crooked or extension along axis direction of the above-mentioned blank that stretches out, and are shaped to rim part (11).
Pressurization end face periphery in the shaping disc portion that is used for of the 2nd forging die (302) is formed for the wheel rim forming part of the little rim part of moulding, on its outer peripheral edges, is formed for the annular wall (32) of the little rim part ora terminalis of moulding.Rotatably mounted format roll (2) docks with the last ora terminalis of annular wall (32) or is approaching.Therefore, in the moulding initial stage of rim part (11), an above-mentioned part of stretching out blank is filled in the space that the end face by the wheel rim forming part of the 2nd forging die (302), annular wall (32) and format roll (2) surrounds.
Then, further press down workpiece (10), the blank amount of stretching out increases, but the blank that extends to the wheel rim forming part of the 2nd forging die (302) is stoped by annular wall (32), because the roll-forming effect of format roll (2) and the 1st, the 2nd forging die (301), (302) trunk, the above-mentioned blank that stretches out are squeezed toward big rim part forming area.
When arriving final depressed state, the two sides of round plate (1) is by the pressurization end face moulding of the pressurization end face and the 2nd forging die (302) of the 1st forging die (301), and simultaneously, the rim part of being made up of big rim part and little rim part (11) is also by moulding.
In addition, when being the complicated bend shape the section configuration of rim part (11) resembles automotive wheels, then set the trunk shape of the 1st forging die (301) and the trunk shape of format roll (2) correspondingly.
In the swaging initial stage that little rim part moulding finishes, the end of little rim part is retrained by annular wall (32) is complete allly.When implementing swaging operation thereafter under this periphery restrained condition, the workpiece (10) that is arranged between the 1st forging die (301) and the 2nd forging die (302) is the dough extending of the 1st forging die (301) one sides.Therefore, after arriving above-mentioned periphery restrained condition, just can not produce the defective of prior art, promptly, on the fan-shaped section of depressing zone (101) inside part, can not produce repeatedly radial compression and extension, thereby near this fan-shaped inside part of depressing zone (101) or its, be full of cracks can not occur.
In addition,, become very big though be used for the forming pressure of the wheel rim forming part of the little rim part of moulding in the later half operation of swaging, in this part, because the above-mentioned periphery restrained condition of the full Zhou Chengwei of blank that stretches out, so can suppress the generation of burr.
Other invention
The invention of claim 2 is to increase following characteristics on the basis of claim 1 invention: " format roll (2) has truncated cone portion; this truncated cone portion is located at the interface outside of the 1st forging die (301) and the 2nd forging die (302), and the diameter of this truncated cone portion diminishes towards the 1st forging die (301) from the 2nd forging die (302).”
In this invention,, dock with the truncated cone portion of format roll (2) from the part of the blank extruded between the pressurization end face of the pressurization end face of the 1st forging die (301) and the 2nd forging die (302) along with forging and pressing workpiece (10).The trunk diameter of this truncated cone portion is to diminish gradually towards the 1st forging die (301), therefore, in the pressurization initial stage, the gap between the pressurization end face outer peripheral edges of the 1st forging die (301) and format roll (2) trunk is big, along with the carrying out of forging and pressing, this gap diminishes gradually.Its result, in the forging and pressing initial stage, extended upward by the 1st forging die (301) and format roll (2) and the thickness of the suitable portion of wheel rim that forms from the upper end towards round plate (1) attenuation gradually.Therefore, according to the invention of claim 2, can be doing thicklyer than its base end part with respect to the thickness of the long ring bodies front of extending of round plate (1).
The invention of claim 3 is in order to make wheel of the bus with the rotary forging apparatus of claim 1 invention, for this reason, increase following supplementary features on the basis of claim 1 invention: " consistent to the shape of outer rim (12) inner peripheral surface and rim flange (121) side that links to each other with side plane from automotive wheels round plate (1) outside from the pressurization end face of the 2nd forging die (302) to the shape of wheel rim forming part; consistent near the shape of the round plate (1) of inner rim (13) inner peripheral surface with round plate (1) inner side plane to the shape of trunk from the 1st forging die (301) end face that pressurizes; be provided with outer rim forming part (25) on the trunk of format roll (2), the inner face of this outer rim forming part (25) and outer rim (12) outer peripheral face and coupled rim flange (121) matches." therefore, in swaging at the end, formed two sides in the table of automotive wheels round plate (1), simultaneously, at least all outer rims (12) and near the available operation moulding of the part round plate (1) of inner rim (13) in the wheel rim section.
The invention of claim 4, be on the basis of claim 3 invention, to increase following technical characterictic: " keeping being parallel under the orthostatism state of the 2nd forging die (302) rotation at format roll (2), can move along the radial direction of the 2nd forging die (302) and the direction that is parallel to above-mentioned rotation." owing to the position of format roll (2) can be regulated up and down with respect to the 1st forging die (301) and the 2nd forging die (302), so can regulate the thickness of rim part.
The invention of claim 5 is to increase following technical characterictic on the basis of claim 4: " in the certain limit on the 2nd forging die (302) pressurization end face, being formed with the consistent concavo-convex grain pattern forming part of concavo-convex grain pattern portion with round plate (1) ".According to the present invention, in the initial stage of swaging, after rim flange (121) formed, its outer circumferential side was lived by annular wall (32) constraint, so pressurization thereafter makes the blank of workpiece (10) be filled to effectively in the concavo-convex grain pattern portion.Like this, be formed on the concavo-convex grain pattern forming part that the concavo-convex grain pattern portion on round plate (1) surface can correctly copy the 2nd forging die (302).That is, can improve formed precision.
Fig. 1 is the key diagram of first operation in the prior art.
Fig. 2 is the key diagram of second operation in the prior art.
Fig. 3 is the key diagram of prior art device, and this device is used to make the product that rim part (11) is asymmetric with round plate (1).
Fig. 4 is the graph of a relation of depressing zone and thick format roll (21) under the situation shown in Figure 3.
Fig. 5 is the device key diagram of the embodiment of the invention 1.
Middle specification figure when Fig. 6 is device moulding with embodiment 1.
Fig. 7 is the finish key diagram of state of moulding.
Fig. 8 is the sectional drawing with the belt wheel edge wheel disc of the device moulding of embodiment 1.
Fig. 9 is the device major part sectional drawing of embodiment 2.
Middle specification figure when Figure 10 is device moulding with embodiment 2.
Figure 11 is the key diagram of embodiment 2 moulding finishing state.
Figure 12 is the key diagram of the another kind of form of embodiment 2.
Figure 13 is the device key diagram of embodiment 3.
Middle specification figure when Figure 14 is device moulding with embodiment 3.
Figure 15 is the rotary pressing processing key diagram.
Figure 16 is the schematic partial sectional view of the automotive wheels that is made into of the device with embodiment 3.
Figure 17 is along reaching the key diagram that left and right directions is controlled to forming roll (2) up and down.
Figure 18 is placed on the key diagram that the 2nd forging die (302) is gone up state to the workpiece (10) through forging dumming usually.
Figure 19 is the finish key diagram of state of situation moulding shown in Figure 180.
Among the figure, (301)～1st forging die, (302)～2nd forging die, (10)～workpiece, (11)～rim part, (31)～endless groove, (2)～format roll, (1)～round plate.
Below, with reference to the description of drawings embodiments of the invention.
Fig. 5～Fig. 7 represents the rotary forging apparatus of embodiment 1, and this device is used to be manufactured on the product (see figure 8) that discoid round plate (1) periphery is being connected with cylindric rim part (11).
The rim part of this product (11) is made of flange part (14) and wheel rim main body (111), and flange part (14) is located on the position of being partial to round plate (1) slightly, and wheel rim main body (111) is extended along axis direction from the interior Zhou Duan of flange part (14).
The rotation of the 2nd forging die (302) is vertical, forms the consistent planar portions in outside with round plate (1) on its pressurization end face, its outer circumferential side formation towards above the cannelure (31) of opening.The section configuration consistent size of section configuration size of this cannelure (31) and flange part (14).
The pressurization end face of the 1st forging die (301) is big drift angle taper shape, and its trunk is the truncated cone of upper end diameter less than lower end diameter.The axis of the 1st forging die (301) tilts about 2～5 degree with respect to the axis of the 2nd forging die (302), is liftably supporting under this heeling condition.Under this heeling condition, the pressurization end face of the 1st forging die (301) bus on one side is slightly horizontal, and trunk bus on one side is slightly vertical configuration.In addition, the taper seat summit of the 1st forging die (301) pressurization end face is consistent with the rotation of the 2nd forging die (302).The pressurization end face of the pressurization end face of the 1st forging die (301) and the 2nd forging die (302) near the time, cylindric format roll (2) but rotation be supported in the two forging die boundary portion outside, this format roll (2) can move along the radial direction of the 2nd forging die (302).Minimum gap (0.2mm～1mm) is for example arranged below format roll (2) and between the annular wall (32) of cannelure (31) the periphery upper end.
The 1st forging die (301) and the 2nd forging die (302) are driven by drive unit (4) by transmission device (41).To the effect of transmission device (41), the 1st forging die (301) can equidirectional synchronously rotation with the 2nd forging die (302).The 2nd forging die (302) is driven in rotation in the fixed position, and the 1st forging die (301) is driven with the timing lifting by lifting drive (5).The 1st forging die (301) rotatably by lifting drive (5) efferent the axle support sector (51) supporting, the 1st forging die (301) but with above-mentioned inclination attitude and rotation be supported in the support sector (51).The axis of guide of Yan Shening (52) runs through a support sector (51) along the vertical direction, and like this, axle support sector (51) is with the lifting with the advance and retreat of the output shaft of lifting drive (5) of certain posture.
Transmission device (41) is made up of the 1st gear drive (42), the 2nd gear drive (43) and transmission mechanism (44); The rotating shaft of the output shaft of the 1st gear drive (42) transmission drive (4) and the 1st forging die (301), the 2nd gear drive (43) rotation drives the 2nd forging die (302), and transmission mechanism (44) is made of the pulley gear or the chain and sprocket driving device of the output shaft of the power shaft of transmission the 2nd gear drive and drive unit (4).Determine the transmission ratio of above-mentioned each transmission mechanism and transmission direction so that the 1st forging die (301) is done in the same way rotation synchronously with the 2nd forging die (302).
The output shaft of drive unit (4) is made of 2 axles of file, is connecting by spline fitting portion (45) telescopically.Therefore, the 1st forging die (301) limit is keeping the state limit lifting with drive unit (4) transmission.
When making product shown in Figure 8, as shown in Figure 5, thick disk shape or cylindric workpiece (10) are clipped between the pressurization end face of the pressurization end face of the 1st forging die (301) and the 2nd forging die (302) with present embodiment.
Toward medial movement, its trunk is fixed on and wheel rim main body (111) outer peripheral face consistent location format roll (2).
Drive unit under this state (4), limit make the 1st forging die (301) and the 2nd forging die (302) rotate the limit synchronously and make lifting drive (5) decline.Like this, the 1st forging die (301) is just toward the 2nd forging die (302) side shifting, pushes the workpiece (10) between the pressurization end face of this two forging die, and workpiece (10) is flattened, and its outer peripheral edges portion extrudes from the boundary portion of this two forging die gradually.This blank of extruding is the ring bodies of ring-type by format roll (2) machine-shaping for the section that extends along the vertical direction.
Along with the carrying out of pressurization, as shown in Figure 6, the ring bodies of below extends and invades in the endless groove (31).The ring bodies of this below finally is full of the space that is formed by format roll (2) and endless groove (31), is shaped to flange part (14).The ring bodies of top still extends upward.
When further depressing, flange part (14) is keeping molded state again, just extends along the axis direction length of top ring bodies, carries out plastic deformation.At this moment, because the peripheral part of flange (14) is in by annular wall (32) constraint state firmly, the compression stress that depressing between the pressurization end face that the 1st, the 2nd forging is changed produces on the regional blank and the difference of extension power are minimum.Therefore, in this swaging operation, do not produce be full of cracks depressing on the zone (101).
When arriving final depressed state, the blank between the pressurization end face of the 1st, the 2nd forging die becomes the round plate (1) of setting thickness, and the cylindrical portion of extending upward in its periphery becomes wheel rim main body (111).So far, the production of Fig. 8 finishes.
Fig. 9～embodiment shown in Figure 11 is the 1st forging die (301) and the 2nd forging die (302) that adopts similarly to Example 1, and the section configuration of wheel rim main body (111) is shaped to the thin slightly triangular shaped rotary forging apparatus of the thick cardinal extremity of front end.
The format roll that adopts in the present embodiment (2) is a circular cone shape.The upper end of the below end face of format roll (2) and annular wall (32) leave minimum with gap vis-a-vis.Workpiece (10) is clipped in the original state between the pressurization end face of the 1st, the 2nd forging die, the pressurization end face of the 1st forging die (301) is positioned at than top position high in the middle of format roll (2) trunk.
During with this rotary forging apparatus shaping workpiece (10), at the swaging initial stage, the blank of extruding from two forging dies just with format roll (2) when trunk docks, the 1st forging die (301) pressurizes interval (α) between end face and format roll (2) trunk with the leading section consistency of thickness of wheel rim main body (111).(see figure 9)
Along with workpiece (10) is depressed, with the foregoing description 1 similarly, a part of extruding in the blank is full of the space that is formed by endless groove (31) and format roll (2), forms flange part (14).Another part is towards annulus one side shifting of away from flange portion (14), and this ring bodies extends along axis direction.(see figure 10)
At this moment, because the pressurization endface position of the 1st forging die (301) descends, the interval between this pressurization end face and format roll (2) trunk diminishes gradually.Thereby the thickness of annulus cardinal extremity attenuation gradually.As shown in figure 11, when the 1st forging die (301) arrives when finally falling the position, be spaced apart minimum between the pressurization end face of the 1st forging die (301) and format roll (2) trunk, this is the thickness of wheel rim main body (111) base end part at interval.Therefore, the section of wheel rim main body (111) becomes slightly triangle.
In addition, as shown in figure 12, also can make the shape that is being connected with columnar portion (24) in the below of truncated cone portion (23) to the shape of format roll (2) trunk.In this case, under the pressurization end face of the 1st forging die (301) state consistent, be constant by the thickness of the part of the 1st forging die (301) and format roll (2) formed rim main body (111) with columnar portion (24).Therefore, the wheel rim main body (111) that molds present from product round plate (1) up in the certain limit thickness constant, then from here towards the front shape of thickening gradually.
The device of this embodiment is used for manufacturing and has the automotive wheels of rim part shown in Figure 16 (11).This rim part (11) has the drop-center (15) that is connected with on round plate (1) periphery, and whole rim part (11) is made of little outer rim (12) and big inner rim (13).
The sidewall of outer rim (12) one sides of drop-center (15) becomes the annular wall of omiting perpendicular to wheel axis, and round plate (1) is positioned near this sidewall.The sidewall of inner rim (13) one sides of drop-center (15) becomes taper surface (151).The outside in drop-center (15) forms tire seal portion (132), (132).
In addition, be shaped to of the device moulding of Figure 16 shape intermediate products before by present embodiment.
The structure of the 1st forging die (301) of this rotary forging apparatus, the 2nd forging die (302) and format roll (2) as shown in figure 13.
On the pressurization end face of the 2nd forging die (302), form the consistent extrusion forming face of outside planar portions with round plate (1).On this extrusion forming face, has the consistent concavo-convex grain pattern forming part (16) of concavo-convex grain pattern on the outside planar portions with round plate (1).The peripheral part shape of the 2nd forging die with from the periphery of round plate (1) to outer rim (12) inner peripheral surface and the shape of rim flange (121) side that links to each other with inner peripheral surface consistent, also form the annular periphery wall (32) that highly slightly equals rim flange (121) thickness in its periphery.
Same among the pressurization end surface shape of the 1st forging die (301) and the embodiment 1 forms the virtually conical shape corresponding to round plate (1) inner side plane portion shape.The global shape of its trunk is up-small and down-big summary cone shape.Consistent from the pressurization end face to the shape of lower torso with the shape of taper surface (151) from round plate (1) to inner rim (13).The shape on trunk top becomes the taper surface formation portion (33) corresponding with taper surface (151).
The first half of format roll (2) is a columnar portion, its below part form shape with from the outer peripheral face of outer rim (12) to the consistent outer rim forming part (25) of rim flange (121) interior shape.
When making wheel of the bus with this device, the lower surface of format roll (2) and the upper end of annular wall (32) between have on the height and position in minimum gap, simultaneously, format roll (2) is fixed on the outer peripheral face consistent location of its trunk and product rim part (11), and discoid workpiece (10) is clipped between the 1st, the 2nd forging die and is rotated forging.
At the swaging initial stage, the outer rim (12) from round plate (1) to rim flange (121) is shaped to net shape by outer rim forming part (25) and the 2nd forging die (302).In the operation afterwards, the blank that stretches out from the border of the 1st, the 2nd forging die extends upward, is shaped to the suitable portion of inner rim (130) that is equivalent to inner rim (13).(seeing Figure 14).
When the suitable portion of this inner rim (130) moulding, the blank that stretches out from the 1st, the 2nd forging die border is shaped to cylindric by the columnar portion of format roll (2) and near the position, trunk lower end of the 1st forging die (301).Along with pressing down workpiece (10), this cylinder extends along axis direction.Because the taper surface formation portion (33) corresponding to taper surface (151) is arranged in the middle part of the trunk of the 1st forging die (301), above-mentioned cylindrical portion just is shaped to conically shaped portion along with extending along axis direction by enlarging.
When the 1st forging die (301) was lowered to lower dead point position (limiting condition that workpiece (10) is depressed), as shown in figure 14, the outer rim (12) of round plate (1) and rim part (11) was shaped to net shape.The drop-center (15) and taper surface (151) part that are formed on the inboard suitable portion of inner rim (130) of round plate (1) are shaped to net shape, and coupled end forms the tapered portion of rough.
When above-mentioned moulding finishes, the outside of round plate (1) is processed as final concavo-convex grain pattern portion by concavo-convex grain pattern forming part (16), when the moulding of this concavo-convex grain pattern portion, the rim part peripheral part that joins is therewith lived by annular wall (32) constraint, and therefore this concavo-convex grain pattern portion is able to accurate forming.
As shown in figure 15, with rotary pressing processing the front end of the suitable portion of the inner rim of semi-finished product wheel (130) is shaped to the tire seal portion (132) of inner rim (13), inner rim (13) just is shaped to net shape, and automotive wheels is made and finished.
In addition, in this embodiment, can be the extension elongation that is depressed into the suitable portion of inner rim (130) under the final thickness state at workpiece (10) and thickness setting for inner rim (13) be processed into the required value of net shape.Also can must be bigger than the thickness of inner rim (13) the thickness setting of the suitable portion of inner rim (130), when stating the rotary pressing processing of machine-shaping on the implementation, reshaping is and the consistent thickness of inner rim (13).
The explanation of other embodiment.
The material of above-mentioned workpiece (10) can adopt aluminium or its alloy, perhaps magnesium alloy etc.Carry out above-mentioned each swaging operation by hot-working.
In the above-described embodiments, the device that makes format roll (2) be kept upright posture and to be fixed on the moulding rim part on the allocation is described, but as shown in figure 17, as equip a drive unit (6), this drive unit (6) is under the state that is held in forming roll (2) orthostatism, roller (2) is moved along the 2nd forging die (302) radial direction and the direction that is parallel to above-mentioned rotation, then under the control of this drive unit (6), can change the thickness of rim part arbitrarily.Under this embodiment situation,, then can intricately change flange thickness if the outer peripheral face of format roll (2) is set for the shape with platform shape portion shown in Figure 17.
As shown in figure 18, as workpiece (10), the jog of its round plate and the outer rim portion that is attached thereto also can be earlier by common forging and molding operation roughing.This workpiece is placed on the 2nd forging die (302), and its outer rim portion is embedded in the endless groove (31).Carry out with the same swaging of the foregoing description after, the suitable portion with inner rim of outer rim shown in Figure 19 (12) (130) just is shaped.Among this embodiment, owing to be that rough machined workpiece (10) has been passed through in moulding, so the formability of swaging operation improves, and just become above-mentioned periphery restrained condition at the very start, so the effect of anti-cracking of round plate is good in the beginning that is shaped.
In addition, in the above-described embodiments, the situation that external rim part is positioned at round plate (1) outside outer fix is described, shape according to product, also can be made in outer rim portion on the outside consistent location with round plate (1), perhaps as shown in figure 17, outer rim portion is made on the inner side of round plate outside.
Claims (5)
1, a kind of rotary forging apparatus, the slightly coniform pressurization end face of its 1st forging die (301) and the pressurization end face of the 2nd forging die (302) are oppositely arranged, the axis of the 1st forging die (301) favours the axis of the 2nd forging die (302), workpiece (10) is clipped between the pressurization end face of the pressurization end face of the 1st forging die (301) and the 2nd forging die (302), above-mentioned two forging die limits rotate the limit synchronously in opposite directions near forging and pressing workpiece (10) shaping disc portion (1), are processed into by being connected with the rim part (11) that big rim part on round plate and little rim part constitute from depressing the blank that stretches out in the zone by format roll (2) and above-mentioned two forging dies handle simultaneously; It is characterized in that, be formed for the wheel rim forming part of the little rim part of moulding on pressurization end face peripheral part at the shaping disc of the 2nd forging die (302), the annular wall (32) that this little rim part ora terminalis of moulding is used is stretched out towards the 1st forging die (301) side from wheel rim forming part outer peripheral edges, but rotation the format roll (2) that supporting dock with the upper end of annular wall (32) or approaching.
2, rotary forging apparatus as claimed in claim 1, it is characterized in that, format roll (2) has truncated cone portion, this truncated cone portion is located at the boundary portion outside of the 1st forging die (301) and the 2nd forging die (302), and the diameter of truncated cone portion diminishes towards the 1st forging die (301) from the 2nd forging die (302).
3, rotary forging apparatus as claimed in claim 1, it is characterized in that, the shape of the shape from the pressurization end face of the 2nd forging die (302) to the wheel rim forming part and inner peripheral surface from the outside planar portions of automotive wheels round plate (1) to outer rim (12) and coupled rim flange (121) side is consistent, consistent with inner side plane portion from the pressurization end face of the 1st forging die (301) near the shape the round plate (1) of inner rim (13) inner peripheral surface from round plate (1) to the shape of trunk, on the trunk of format roll (2), be provided with the outer rim forming part (25) that matches with the inner face of the outer peripheral face of outer rim (12) and the rim flange (121) that is attached thereto.
4, rotary forging apparatus as claimed in claim 3, it is characterized in that, format roll (2) is keeping being parallel under the orthostatism state of the 2nd forging die (302) axis, can move with the direction that is parallel to above-mentioned rotation along the radial direction of the 2nd forging die (302).
5, rotary forging apparatus as claimed in claim 4 is characterized in that, in the certain limit of the 2nd forging die (302) pressurization end face, forms the consistent concavo-convex grain pattern forming part of concavo-convex grain pattern portion with round plate (1).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6045996A JP2819084B2 (en) | 1994-03-16 | 1994-03-16 | Rotary forging device and method for manufacturing automobile wheel using the same |
| JP45996/94 | 1994-03-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1112465A true CN1112465A (en) | 1995-11-29 |
Family
ID=12734723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95102456A Pending CN1112465A (en) | 1994-03-16 | 1995-03-09 | Rotary forging apparatus |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0672484A1 (en) |
| JP (1) | JP2819084B2 (en) |
| KR (1) | KR100302082B1 (en) |
| CN (1) | CN1112465A (en) |
| AU (1) | AU1485995A (en) |
| CA (1) | CA2144215A1 (en) |
| MY (1) | MY114517A (en) |
| TW (1) | TW254870B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100469486C (en) * | 2007-11-13 | 2009-03-18 | 成都市新筑路桥机械股份有限公司 | Rolling preparation method for thick-walled and thin-bottomed basin parts |
| CN101862807A (en) * | 2010-06-11 | 2010-10-20 | 西安交通大学 | Rotary forging method and forging device for large disk parts |
| CN102864400A (en) * | 2012-07-03 | 2013-01-09 | 光钰科技（临沂）有限公司 | Production method of magnesium metal orthopedic materials |
| CN104550607A (en) * | 2014-12-26 | 2015-04-29 | 北京机电研究所 | Rotary forge forming die and rotary forge forming method |
| CN106903255A (en) * | 2017-04-19 | 2017-06-30 | 中国航发北京航空材料研究院 | A kind of rotary rolling forging apparatus of Rotary forging |
| CN108465763A (en) * | 2018-03-22 | 2018-08-31 | 南京信息职业技术学院 | Air hammer impact type automatic cold forging iron pan equipment |
| CN118871226A (en) * | 2023-09-25 | 2024-10-29 | 株式会社小谷 | Roll forging method and device |
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| CN102172752B (en) * | 2011-01-28 | 2013-04-24 | 河南中轴股份有限公司 | Ring roll device for processing cakes and hubbed flange pieces |
| CN104014795B (en) * | 2014-06-18 | 2015-11-04 | 安平县德益金属复合材料有限公司 | Prepare the preparation method that iron-copper bi-metal sealing nut pendulum rolles over mould and this nut |
| CN107186148A (en) * | 2017-07-13 | 2017-09-22 | 苏州昆仑重型装备制造有限公司 | The mould of rotary drum is forged on common hydraulic press |
| CN107803423A (en) * | 2017-11-30 | 2018-03-16 | 中国科学院金属研究所 | A kind of shaped structure and manufacturing process for manufacturing lightweight automobile rim |
| WO2019163986A1 (en) * | 2018-02-26 | 2019-08-29 | 日本精工株式会社 | Oscillation processing device, method for manufacturing hub unit bearing, and method for manufacturing automobile |
| CN109454412A (en) * | 2018-12-28 | 2019-03-12 | 同共(湖北)精密成形有限公司 | A kind of processing method of bearing race |
| CN113001115A (en) * | 2021-03-03 | 2021-06-22 | 华安正兴车轮有限公司 | High-precision numerical control swing forging process for manufacturing aluminum alloy wheel |
| CN115365436B (en) * | 2022-10-24 | 2023-02-07 | 连云港恒旺五金工具制造有限公司 | Pressurizing forging equipment for forging high alloy steel |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61226132A (en) * | 1985-03-30 | 1986-10-08 | Sumitomo Metal Ind Ltd | Rotary forging machine with external forming roll |
| SU1613221A1 (en) * | 1988-09-26 | 1990-12-15 | Предприятие П/Я М-5893 | Method of producing magnetic circuits |
| SU1761349A1 (en) * | 1990-05-17 | 1992-09-15 | Научно-исследовательский институт металлургической технологии | Method of manufacturing axisymmetric parts |
| JP2753927B2 (en) * | 1992-11-17 | 1998-05-20 | 株式会社レイズエンジニアリング | Manufacturing method of light alloy wheel |
| JP2652334B2 (en) * | 1993-11-10 | 1997-09-10 | 株式会社レイズエンジニアリング | Rotary forging equipment |
-
1994
- 1994-03-16 JP JP6045996A patent/JP2819084B2/en not_active Expired - Fee Related
-
1995
- 1995-02-15 TW TW084101345A patent/TW254870B/en active
- 1995-03-06 MY MYPI95000544A patent/MY114517A/en unknown
- 1995-03-08 KR KR1019950004709A patent/KR100302082B1/en not_active IP Right Cessation
- 1995-03-08 EP EP95301513A patent/EP0672484A1/en not_active Withdrawn
- 1995-03-08 CA CA002144215A patent/CA2144215A1/en not_active Abandoned
- 1995-03-09 CN CN95102456A patent/CN1112465A/en active Pending
- 1995-03-15 AU AU14859/95A patent/AU1485995A/en not_active Abandoned
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100469486C (en) * | 2007-11-13 | 2009-03-18 | 成都市新筑路桥机械股份有限公司 | Rolling preparation method for thick-walled and thin-bottomed basin parts |
| CN101862807A (en) * | 2010-06-11 | 2010-10-20 | 西安交通大学 | Rotary forging method and forging device for large disk parts |
| CN101862807B (en) * | 2010-06-11 | 2012-05-23 | 西安交通大学 | Rotary forging method for large disc type work piece and forging device |
| CN102864400A (en) * | 2012-07-03 | 2013-01-09 | 光钰科技（临沂）有限公司 | Production method of magnesium metal orthopedic materials |
| CN102864400B (en) * | 2012-07-03 | 2015-07-08 | 光钰科技（临沂）有限公司 | Production method of magnesium metal orthopedic materials |
| CN104550607A (en) * | 2014-12-26 | 2015-04-29 | 北京机电研究所 | Rotary forge forming die and rotary forge forming method |
| CN106903255A (en) * | 2017-04-19 | 2017-06-30 | 中国航发北京航空材料研究院 | A kind of rotary rolling forging apparatus of Rotary forging |
| CN108465763A (en) * | 2018-03-22 | 2018-08-31 | 南京信息职业技术学院 | Air hammer impact type automatic cold forging iron pan equipment |
| CN108465763B (en) * | 2018-03-22 | 2019-09-20 | 南京信息职业技术学院 | Air hammer impact type automatic cold forging iron pan equipment |
| CN118871226A (en) * | 2023-09-25 | 2024-10-29 | 株式会社小谷 | Roll forging method and device |
| CN118871226B (en) * | 2023-09-25 | 2025-03-11 | 株式会社小谷 | Roll forging method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2144215A1 (en) | 1995-09-17 |
| JP2819084B2 (en) | 1998-10-30 |
| MY114517A (en) | 2002-11-30 |
| JPH07251232A (en) | 1995-10-03 |
| TW254870B (en) | 1995-08-21 |
| KR100302082B1 (en) | 2001-11-22 |
| AU1485995A (en) | 1995-09-28 |
| EP0672484A1 (en) | 1995-09-20 |
| KR950031300A (en) | 1995-12-18 |
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