Forming and manufacturing method of pillar track wheel composite board

Abstract

The invention relates to a strut track wheel composite board forming and manufacturing method, and the method comprises the steps that a second track wheel and a first track wheel are manufactured, and the second track wheel comprises a second track wheel annular part; and a second track wheel curved portion provided on the radially inner side of the second track wheel annular portion and curved and extended so as to have a recessed second track wheel track surface on the radially inner side, the first track wheel including: a first track wheel annular portion; and a first track wheel bent portion provided on a radially outer side of the first track wheel annular portion and bent and extended so as to form a recessed first track wheel track surface on a radially outer side, and the first track wheel has an outer diameter larger than an inner diameter of the second track wheel and smaller than an outer diameter of the second track wheel.

Description

Technical Field

[0001] The present invention relates to a method for forming and manufacturing a composite plate material for a pillar rail wheel, and more specifically to a method for forming and manufacturing a composite plate material for a pillar rail wheel, which reduces the materials used for manufacturing, reduces the manufacturing cost, shortens the manufacturing time, and minimizes the occurrence of defects. Background Art

[0002] Generally, the suspension device of a car is a device that prevents the vibration or impact received by the axle from the road from being directly transmitted to the car body when the car is running, thereby preventing damage to the car body or cargo and improving the ride feeling. This suspension device is divided into many types according to the combination method with the car body or the vibration control method. The front suspension device distinguished by the form of the front axle connects the frame and the axle to support the weight of the car, absorbs the vibration generated from the wheel, and installs a part of the steering device of the car. The front suspension device is divided into an axle suspension type and an independent suspension type. The independent suspension type is often used in cars that attach importance to the ride feeling or maneuverability, and the axle suspension type is often used in buses or trucks. In particular, the front suspension device of the independent suspension type has a chicken breast type (wi shbone type) and a MacPherson type (macpherson type). Among them, compared with the chicken breast type, the MacPherson type is a method with a simple structure and excellent ride feeling, and is widely used in cars, etc. The McPherson type suspension device has no upper arm, instead, the lower end of the strut with built-in shock absorber is connected to the lower arm in an integral form through the steering knuckle, so that the steering knuckle and the strut rotate in an integral form when turning, and is widely used in cars, etc. This strut type suspension device includes an upper shell fixed to the vehicle body and a lower shell fastened to the lower part of the upper shell, and has a structure in which the strut rod is installed to pass through the upper shell and the lower shell, and has a strut bearing inserted between the upper shell and the lower shell, so that the strut rod and the lower shell rotate to turn the wheel.

[0003] Figure 1 1 is a partial cross-sectional view of a strut assembly related to the present invention. The strut assembly includes an upper shell 150, a lower shell 110, a suspension spring 260, a strut bearing 140, a strut rod 102, a sealing component 130, and a reinforcing component 120. The upper shell 150 is arranged on the lower shell 110, and the upper shell 150 is fixed to the vehicle body (not shown), and the lower shell 110 is arranged in a form that can be rotated by the strut bearing 140. It has a structure in which an insertion groove is formed along the central axis of the lower shell 110 and the upper shell 150, and the strut rod 102 is inserted into the insertion groove, and the lower shell 110 is fastened and connected to the lower part of the upper shell 150 in a rotatable form with the strut bearing 140 as the center.

[0004] A support bearing 140 is disposed between the lower shell 110 and the upper shell 150 to absorb vertical and lateral forces while allowing the lower shell 110 to rotate based on the upper shell 150 , and includes two first and second track wheels 142 and 146 and a rolling member 144 .

[0005] As described above, the rolling component 144 is configured to roll smoothly and stably between the first track wheel 142 and the second track wheel 146, and the first track wheel 142 and the second track wheel 146 are opposite to each other and formed in a concave shape. On the other hand, the outer diameter of the first track wheel 142 is formed to be larger than the inner diameter of the second track wheel 146.

[0006] Therefore, the problem is that the first track wheel 142 and the second track wheel 146 are manufactured in separate molding processes, and the loss of materials required for manufacturing is large, defects occur during the manufacturing process, and the molding of the first track wheel is unreliable. Summary of the invention

[0007] The present invention is proposed to solve the problems of the prior art as described above, and its purpose is to provide a pillar rail wheel composite plate forming and manufacturing method, which minimizes material loss, shortens manufacturing time, reduces manufacturing costs, and the first rail wheel is reliably formed with almost no defects.

[0008] In order to achieve the above-mentioned purpose, the present invention provides a method for forming and manufacturing a composite plate material of a pillar rail wheel. As a method for forming and manufacturing a composite plate material of a pillar rail wheel, a second rail wheel and a first rail wheel are manufactured, wherein the second rail wheel comprises: a second rail wheel annular portion; a second rail wheel curved portion, which is arranged on the radial inner side of the second rail wheel annular portion and is bent and extended, so as to have a concave second rail wheel track surface on the radial inner side; the first rail wheel comprises: a first rail wheel annular portion; a first rail wheel curved portion, which is arranged on the radial outer side of the first rail wheel annular portion and is bent and extended, so as to form a concave first rail wheel track surface on the radial outer side, and the first rail wheel has an outer diameter larger than the inner diameter of the second rail wheel and smaller than the outer diameter of the second rail wheel, characterized in that it comprises:

[0009] A circular plate forming process, forming and molding a circular plate from a plate; a first molding process, molding the circular plate into a first molded product; an inner diameter trimming process, shearing and separating a portion of the inner diameter portion of the first molded product, thereby forming a second molded product; a separation shearing process, shearing and separating a ring portion of a portion separated outward from the inner diameter end of the second molded product, thereby forming the second molded product into a first track wheel and a third molded product; a fourth molding process, molding the third molded product into a fourth molded product; an outer diameter trimming process, shearing and separating a portion of the outer diameter portion of the fourth molded product, thereby separating the fourth molded product into a plate-shaped ring-shaped outer diameter trimming portion and a second track wheel;

[0010] The first molded product includes: a first molded annular portion in a plate-like ring form from the radially outer side; a first molded cylindrical portion in a cylindrical shape, which is connected to the first molded first curved portion from the radially inner side of the first molded annular portion; a first molded second curved portion, which is arranged on the radially inner side of the first molded cylindrical portion and has a first molded first concave surface formed on the radially inner side; a first molded third curved portion, which is connected to the first molded second curved portion through an annular portion and is arranged on the radially inner side, and has a first molded second concave surface formed on the radially outer side; a first molded second annular portion, which is connected to the radially inner side of the first molded third curved portion through a first molded fourth curved portion and is formed in an annular shape so as to be axially spaced from the first molded annular portion and radially inwardly spaced;

[0011] In the inner diameter trimming process, a radially inner portion of the first molded second annular portion is sheared and separated into an annular shape, and in the separation shearing process, an annular portion between the first molded second curved portion and the first molded third curved portion is sheared and separated;

[0012] In the first molding process, an upper protrusion in the shape of a ring protruding downward is provided on the inner diameter side of the second mold in one process, and a lower protrusion in the shape of a ring protruding upward is provided on the inner diameter side of the second mold in one process, and the circular plate is clamped and sheared by the upper protrusion and the lower protrusion.

[0013] The above is characterized in that, in the outer diameter trimming process, a radially outer portion of the first molded annular portion is sheared off and separated into a ring shape, so that the radially inner portion is formed into the second raceway wheel.

[0014] The above is characterized in that, in the fourth molding process, the radially outer concave surface of the third molded first bend, that is, the third molded first concave surface is radially pressurized inward, while reducing the radius of curvature, so that the third molded second bend is pulled axially toward one side of the third molded annular portion, thereby forming a fourth molded product having a fourth molded second bend with a reduced inner diameter.

[0015] The above is characterized in that, in the inner diameter trimming process, the second upper side surface of the first mold in the second process contacts the second molded cylindrical portion, and the second upper second bottom u215 and the second upper circular portion u213 of the first mold in the second process are separated from the second molded second curved surface, thereby forming a space between them, and when the second molded second cylindrical portion and the second molded second curved portion are not pressurized by the first mold in the second process, the inner diameter side of the first molded second annular portion is sheared off.

[0016] According to the pillar-rail wheel composite sheet forming and manufacturing method of the present invention, the first rail wheel and the second rail wheel can be manufactured in one process, thereby shortening the manufacturing time and manufacturing process, minimizing the material loss required for manufacturing, and reliably realizing the forming of the first rail wheel during the manufacturing process, thereby suppressing the occurrence of defects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a partial cross-sectional view of a related pillar assembly in the prior art.

[0018] Figure 2 It is a cross-sectional view showing a first molding process of molding a first molded product from a circular plate material.

[0019] Figure 3 : is a cross-sectional view showing the inner diameter trimming process of trimming the inner diameter of the first molded product to form the second molded product.

[0020] Figure 4 2 is a cross-sectional view showing a separation and shearing process of forming a first rail wheel and a third molded product located inside by shearing and separating the second molded product.

[0021] Figure 5 It is a cross-sectional view showing a fourth molding process of molding the third molded product into a fourth molded product.

[0022] Figure 6 : is a cross-sectional view showing the outer diameter trimming process of trimming the outer diameter of the fourth molded product to form the second raceway wheel. DETAILED DESCRIPTION

[0023] Hereinafter, the forming and manufacturing method of the support rail wheel composite plate according to the present invention will be described in detail.

[0024] Figure 2 is a cross-sectional view showing a first molding process of molding a first molded product from a circular plate material, Figure 3 is a cross-sectional view showing an inner diameter trimming process for trimming the inner diameter of a first molded product to form a second molded product, Figure 4 is a cross-sectional view showing a separation and shearing process of separating the second molded product by shearing to form the first rail wheel and the third molded product located on the inner side, Figure 5is a cross-sectional view showing a fourth molding process for molding the third molded product into a fourth molded product, Figure 6 : is a cross-sectional view showing the outer diameter trimming process of trimming the outer diameter of the fourth molded product to form the second raceway wheel.

[0025] The pillar rail wheel composite plate forming and manufacturing method according to the present invention is carried out through a transfer process, thereby supplying a circular plate punched and separated from a plate, and passing through Figures 2 to 6 The steps shown are molding.

[0026] The pillar rail wheel composite plate forming and manufacturing method according to the present invention relates to a method for manufacturing a first rail wheel FR1 ( Figure 1 142) and the second track wheel FR2 ( Figure 1 146), wherein the first rail wheel FR1 comprises: a first rail wheel annular portion FR13; a first rail wheel curved portion FR11, which is arranged on the radial outer side of the first rail wheel annular portion FR13 and is bent and extended, thereby forming a concave curved surface on the radial outer side, i.e., a first rail wheel track surface FR11-1, and the second rail wheel FR2 comprises: a second rail wheel annular portion FR23; a second rail wheel curved portion FR21, which is arranged on the radial inner side of the second rail wheel annular portion FR23 and is bent and extended, thereby having a concave curved surface on the radial inner side, i.e., a second rail wheel track surface FR21-1.

[0027] like Figure 1 As shown, the first track wheel FR1 ( Figure 1 The reference numeral 142) is located at the second track wheel FR2 ( Figure 1 On the radial inner side of the reference numeral 146), the first rail wheel track surface FR11-1 and the second rail wheel track surface FR21-1 are opposite to and spaced from each other, and a rotating body 144 is neatly arranged in the circumferential direction between them.

[0028] The method for forming and manufacturing a composite plate material of a support rail wheel according to the present invention comprises: a circular plate forming process, manufacturing from a plate-shaped raw material (not shown), and forming a circular plate material F100 by shearing the plate-shaped raw material; a first forming process ( Figure 2 ), forming the circular plate F100 into a first molded product F200; inner diameter trimming process ( Figure 3 ), a part of the inner diameter portion of the first molded product F200 is sheared off and separated, thereby forming a second molded product F300; separation shearing process ( Figure 4 ), the annular portion of the portion separated outward from the inner diameter end of the second molded product F300 is sheared off, so that the second molded product F300 is formed into the first rail wheel FR1 and the third molded product F400; the fourth molding process ( Figure 5), the third molded product F400 is molded into a fourth molded product F500; outer diameter trimming process ( Figure 6 ), a part of the outer diameter portion of the fourth molded product F500 is sheared off and separated, so that the fourth molded product F500 is separated into a plate-shaped ring-shaped outer diameter trimming portion OB and a second track wheel FR2.

[0029] The operation of the mold is a well-known technique performed by an air cylinder or the like, and therefore the description of the specific operation of the mold is omitted in the following description.

[0030] exist Figures 2 to 6 In the figure, the left side of the center line shows the state before molding, and the right side of the center line shows the state after molding.

[0031] In the circular plate material forming process, the circular plate material F100 is formed by shearing the plate-shaped strip material.

[0032] The circular plate F100 is transferred to a position for performing the first forming process by a fixture. Figure 2 As shown, the circular plate F100 is transferred between an upper process mold and a lower process mold and then pressurized to form a first molded product F200.

[0033] like Figure 2 As shown, a process upper mold includes: a process upper mold u110; a process upper second mold u120, which is slidably arranged on the process upper mold u110 inside the process upper mold u110. A first upper recessed portion u121 is formed in a concave form on the radial outer side of the lower portion of the process upper second mold u120, and a cylindrical first upper side portion u125 is formed toward the lower portion thereof, and a circular first upper circular portion u123 is formed at the lower end of the first upper side portion u125.

[0034] The mold under one process includes: a first mold d110 under one process; a second mold d120 under one process, which is slidably arranged on the inner side of the first mold d110 under one process; and a third mold d130 under one process, which guides the second mold d120 under one process in a slidable manner on the inner side of the second mold d120 under one process.

[0035] In a process, a first lower recessed portion d117 is formed on the radial inner side of the upper portion of a mold d110, and a cylindrical first lower side portion d115 is provided on the upper portion of the first lower recessed portion d117. A first lower second circular portion d119 is formed on the inner diameter end of the first lower recessed portion d117, and the upper end of the first lower side portion d115 is formed as a first lower first circular portion d113 in a circular shape.

[0036] The second mold d120 for one process is arranged to be slidable in the up-down direction between the first mold d110 for one process and the third mold d130 for one process, and a cylinder for controlling the up-down movement of the second mold d120 for one process is arranged at the lower part.

[0037] like Figure 2 As shown on the left side of FIG. 1 , a circular plate F100 is supplied between an upper process mold and a lower process mold. Figure 2 As shown on the right side of , the upper mold of a process descends, so that the outer diameter side of the circular plate F100 is pressurized between the bottom of the upper mold u110 of a process and the first lower upper surface d111 of the lower mold d110 of a process, and the upper second mold u120 of a process continues to descend, and the circular plate F100 is pressurized by the lower second mold d120 of a process and formed into a first molded product F200.

[0038] When the outer diameter side of the circular plate F100 is pressurized between the bottom of a process upper mold u110 and the first lower upper portion d111 of a process lower mold d110, the circular plate F100 is formed into a first molded product F200 by the first upper recessed portion u121, the first upper side portion u125 and the first upper circular portion u123, the first upper side portion u127 of an upper mold of a process, the first lower first circular portion d113, the first lower side portion d115, the first lower recessed portion d117, the first lower second circular portion d119 of a process lower mold and the top of a process lower mold d120.

[0039] The first molded product F200 includes: a first molded annular portion F210 in a plate-like ring shape from the radial outside; a cylindrical first molded cylindrical portion F230, which is connected to the first molded first curved portion F220 from the radial inside of the first molded annular portion F210; a first molded second curved portion F240, which is arranged on the radial inside of the first molded cylindrical portion F230, and has a recessed first molded first recessed surface F241 formed on the radial inside side; a first molded third curved portion F250, which is connected to the first molded second curved portion F240 through an annular portion and is arranged on the radial inside, and has a recessed first molded second recessed surface F251 formed on the radial outside side; a first molded second annular portion F280, which is connected to the radial inside of the first molded third curved portion F250 through a first molded fourth curved portion F270, and is formed into an annular shape, so as to be axially separated from the first molded annular portion F210 and radially separated inwardly. A cylindrical first molded second cylindrical portion F260 is provided between the first molded third curved portion F250 and the first molded fourth curved portion F270.

[0040] like Figure 2 As shown, the first molded second curved portion F240 and the first molded third curved portion F250 are bent in opposite directions.

[0041] In the first molding process, an upper protrusion u128 protruding downward in a ring shape is provided on the inner diameter side of the second die u120 in the first process, and an upper protrusion d121 protruding upward in a ring shape is provided on the inner diameter side of the second die d120 in the first process. The circular plate F100 can be clamped and sheared by the upper protrusion u128 and the lower protrusion d121.

[0042] Since the upper and lower sides are pressurized and clamped by the upper protrusion u128 and the lower protrusion d121, the clamping is reliable, and the generation of burrs on the shearing surface is suppressed, and the shearing is clean and neat.

[0043] like Figure 3 As shown, the first molded product F200 is transferred to a position for performing an inner diameter trimming process. The first molded product F200 is transferred between the second process upper mold and the second process lower mold to trim the inner diameter, thereby forming a second molded product F300.

[0044] like Figure 3 As shown, the second process upper mold includes a second process upper mold u210 and a second process upper mold u220 slidably arranged inside the second process upper mold u210. A ring-shaped plane, i.e., a second upper bottom u217, is formed on the radially outer side of the lower part of the second process upper mold u210, and a cylindrical second upper side surface u211 is arranged inside the second upper side surface u211, and a ring-shaped plane, i.e., a second upper second bottom u215, is arranged inside the second upper side surface u211. A circular second upper circular portion u213 is formed between the second upper side surface u211 and the second upper second bottom u215.

[0045] The second process upper second mold u220 is slidably arranged inside the second process upper first mold u210. A circular plane, namely the second upper shearing pressurizing part u221, is arranged below the second process upper second mold u220.

[0046] In a process, a ring-shaped plane, i.e., a second lower upper portion d211, is provided on the radially outer side of the mold d210, and a cylindrical second lower side portion d215 is provided on the radially inner side thereof, a concave curved second lower concave portion d213 is provided on the lower part thereof, a circular second lower circular portion d217 is provided on the radially inner side of the second lower concave portion d213, a cylindrical second lower second side portion d219 is provided on the inner side thereof, and a ring-shaped ridge surface, i.e., a second lower ridge portion d212, is provided on the radially inner side of the lower part of the second lower second side portion d219. The angle between the second lower upper portion d211 and the second lower side portion d215 is bent to form a circular shape.

[0047] like Figure 3As shown on the left, the first molded product F200 is supplied between the second process upper mold and the second process lower mold d210, as shown in FIG. Figure 3 As shown on the right side of the figure, the second process upper mold descends, so that the outer diameter side of the first molded annular portion F210 of the first molded product F200 is pressurized between the second upper bottom portion u217 of the second process upper mold u210 and the second lower upper portion d211 of the second process lower mold d210. The first molded product F200 is also pressurized between the second upper side portion u211, the second upper circular portion u213, and the second upper second bottom portion u215 of the second process upper mold and the second lower side portion d215, the second lower recessed portion d213, and the second lower circular portion d217 of the second process lower mold d210.

[0048] In the second process, the second mold u220 continues to descend, so that the second upper shearing pressure part u221 slides and inserts into the second lower ridge part u212, and the inner diameter side of the first molded second annular part F280 is sheared off and separated into a ring-shaped inner diameter trimming part IB, so that the first molded product F200 is formed into the second molded product F300.

[0049] like Figure 3 As shown, the second molded product F300 includes: a second molded annular portion F310 in a plate-like ring shape from the radial outside; a cylindrical second molded cylindrical portion F330, which is connected to the second molded first curved portion F320 from the radial inside of the second molded annular portion F310; a second molded second curved portion F340, which is arranged on the radial inside of the second molded cylindrical portion F330, and has a recessed second molded second recessed surface F341 formed on the radial inside side; a second molded third curved portion F350, which is connected to the second molded second curved portion F340 through an annular portion and is arranged on the radial inside, and has a recessed second molded second recessed surface F351 formed on the radial outside side; a second molded second annular portion (not shown), which is connected to the radial inside of the second molded third curved portion F250 through a second molded fourth curved portion (not shown), and is formed into an annular shape, so as to be axially separated from the second molded annular portion F310 and radially separated inwardly.

[0050] exist Figure 3 In the process, the second upper side surface u211 of the first mold u210 of the second process is in contact with the second molded cylindrical portion F330, and the second upper second bottom portion u215 and the second upper circular portion u213 of the first mold u210 of the second process are separated from the second molded second curved surface F341, thereby forming a space G therebetween.

[0051] The second upper second bottom u215 and the second upper circular portion u213 of the second process upper mold u210 are separated from the second molded second curved surface F341, thereby forming a space G between them, whereby when the second molded second cylindrical portion F360 and the second molded second curved portion F340 are not pressurized by the second process upper mold u210, the inner diameter side of the first molded second annular portion F280 is sheared off, and the second molded second cylindrical portion F360 and the second molded second curved portion F340 are pulled in the direction of arrow "A" and lifted in the direction of "B", thereby reliably realizing the molding of the second molded second recessed surface F351 portion and preventing defects in the first rail wheel FR1.

[0052] like Figure 4 As shown on the left side, the second molded product F300 is supplied between the three-process upper mold and the three-process lower mold d310, thereby performing the separation shearing process.

[0053] The three-process upper mold includes: a three-process upper mold u310; a three-process upper mold u320, which is slidably arranged in the three-process upper mold u310. A planar annular third upper bottom u311 is arranged below the three-process upper mold u310. A planar circular third upper shearing pressurizing part u321 is arranged below the three-process upper mold u320.

[0054] like Figure 4 As shown on the right side of the three-process upper mold, the outer diameter side of the second molded annular portion F310 of the second molded product F300 is pressurized between the third upper bottom portion u311 of the three-process upper mold u310 and the third lower upper portion d311 of the three-process lower mold d310.

[0055] A cylindrical surface is connected to the radial inner side of the third lower upper surface d311, and a circular third lower circular portion d313 is arranged between the cylindrical surface and the third lower upper surface d311, and the lower part of the cylindrical surface is connected to the annular third lower ridge portion d317. A cylindrical third lower inner surface d319 is arranged radially inner side of the third lower ridge portion d317.

[0056] The second molded cylindrical portion F330 of the second molded product F300 is inserted into the cylindrical surface radially inside the third lower upper surface portion d311, and a radially inner portion of the annular portion is installed through the third lower ridge portion d317.

[0057] In the state where the second molded product F300 is pressurized between the three-process upper mold u310 and the three-process lower mold d310 and installed in the three-process lower mold d310, the three-process upper mold u320 continues to descend, and the three-process upper mold u320 slides and inserts into the third lower inner surface d319, and between the third upper shearing pressurizing part u321 and the third lower ridge part d317, the annular part of the second molded product F300 is sheared, and the radial inner part is made into the first track wheel FR1. In addition, the radial outer part is formed into the third molded product F400.

[0058] The first track wheel FR1 has a first track wheel annular portion FR13 on the radial inner side, and has a curved first track wheel curved portion FR11 on the radial outer side of the first track wheel annular portion FR13. The first track wheel curved portion FR11 has a recessed first track wheel track surface FR11-1 on the radial outer side. The second molded third curved portion F350 is formed as the first track wheel curved portion FR11. The first track wheel annular portion FR13 is a residual portion on the radial outer side of the first molded second annular portion F280.

[0059] like Figure 4 As shown, the third molded product F400 includes: a third molded annular portion F410 in a plate-like ring shape from the radial outside; a cylindrical third molded cylindrical portion F430, which is connected to the third molded first curved portion F420 from the radial inside of the third molded annular portion F410; a third molded second curved portion F440, which is arranged on the radial inside of the third molded cylindrical portion F430, and has a concave third molded second concave surface F441 formed on the radially inward side.

[0060] An annular portion is provided on the radially inner side of the third formed second curved portion F440. A concave curved surface, ie, a third formed first concave surface F421, is formed on the radially outer side of the third formed first curved portion F420.

[0061] The annular portion between the second molded second bend F340 and the second molded third bend F350 of the second molded product F300 is sheared off to form the first track wheel FR1 and the third molded product F400, so the outer diameter of the first track wheel FR1 and the inner diameter of the third molded product F400 can be formed to be the same size, or the outer diameter of the first track wheel FR1 can be formed to be slightly smaller than the inner diameter of the third molded product F400.

[0062] like Figure 5 As shown on the left, the third molded product F400 is supplied between the four-process upper mold and the four-process lower mold, thereby performing the fourth molding process. The four-process upper mold includes a cylindrical four-process upper mold u410; and a four-process upper mold u420, which is slidably arranged inside the four-process upper mold u410.

[0063] like Figure 5 As shown on the right side of the figure, the upper mold of the fourth process descends, so that the third molded annular portion F410 of the fourth molded product F400 is pressurized between the fourth upper bottom portion u411 below the upper mold u410 of the fourth process and the fourth lower upper portion d411 above the lower mold d410 of the third process. The lower portion of the lower mold d410 of the third process is supported by a cylinder, so that through the pressurization of the upper mold u410 of the fourth process, the cylinder contracts and the lower mold d410 of the third process also descends, so that the fourth lower upper portion d411 and the upper portion of the fourth lower ridge portion d410 of the lower second mold d420 of the third process are at the same height (refer to Figure 5 In this state, the fourth process upper second mold u420 continues to descend. The fourth process upper second mold u420 has a fourth upper circular portion u421 with a circular shape on the radial outer side.

[0064] The three-process lower second mold d420 is a fixedly installed mold, and the four-process upper first mold u410 is slidably arranged on the outer side of the three-process lower second mold d420 and supported by a cylinder. The four-process lower second mold d420 is provided with an annular plane, i.e., the fourth lower ridge portion d421, on the radial outer side, a cylindrical fourth lower side surface portion d423 is provided on the inner side thereof, and a concave curved fourth lower circular portion d425 is provided on the radial inner side thereof. A circular portion in a circular shape is provided at the corner between the fourth lower side surface portion d423 and the fourth lower ridge portion d421, and the curvature radius of the circular portion is formed to be smaller than the curvature radius of the third lower circular portion d313.

[0065] The third molded product F400 is pressurized between the fourth upper bottom portion u411 and the fourth lower upper portion d411, and the third molded cylindrical portion F430 is inserted into the fourth lower side portion d423, the third molded second curved portion F440 is located between the fourth upper circular portion u421 and the fourth lower circular portion d425, and the third molded first concave surface F421 is pressurized by the circular portion of the angle between the fourth lower side portion d423 and the fourth lower ridge portion d421, thereby reducing the radius of curvature.

[0066] By the pressurization as described above, the third molded second curved portion F440 is pulled toward the third molded curved portion F410 in the axial direction, and deformed to reduce the inner diameter, thereby forming the fourth molded product F500. By the simple deformation as described above, the third molded product F400 is formed into the fourth molded product F500 with a reduced inner diameter. In the fourth molding process, the radius of curvature of the radially inner block surface of the third molded first curved portion F420 is also reduced.

[0067] like Figure 5As shown, the fourth molded product F500 includes: a fourth molded annular portion F510 in a plate-like ring shape from the radial outside; a cylindrical fourth molded cylindrical portion F530, which is connected to the fourth molded first curved portion F520 from the radial inside of the fourth molded annular portion F510; a fourth molded second curved portion F540, which is arranged on the radial inside of the fourth molded cylindrical portion F530 and has a recessed fourth molded second recessed surface F541 formed on the radially inward side.

[0068] Through the molding in the fourth molding process, the inner diameter of the fourth molded product F500 is smaller than the outer diameter of the first rail wheel FR1 separated and manufactured in the separation shearing process.

[0069] like Figure 6 As shown on the left side, the fourth molded product F500 is supplied between the five-process upper die and the five-process lower die d510, thereby performing the outer diameter trimming process.

[0070] The five-process upper mold includes: a cylindrical five-process upper mold u510; and a five-process upper second mold u520, which is slidably arranged on the inner side of the five-process upper mold u510.

[0071] The first mold u510 of the fifth process is provided with an annular plane at the bottom, namely, the fifth upper bottom u511. The second mold u520 of the fifth process has a plane at the bottom, namely, the fifth upper shearing and pressing part u521. The fifth upper shearing and pressing part u521 can be formed into an annular surface or a circular surface.

[0072] The fifth process lower mold d510 is formed in a cylindrical shape and has an annular plane at the upper portion, namely, the fifth lower upper surface d511. The fifth process upper second mold u520 has an outer diameter that can be slidably inserted into the inner diameter side of the fifth lower upper surface d511.

[0073] As the fifth process upper mold descends, the radially outer portion of the fourth molded annular portion F510 of the fourth molded product F500 is pressurized between the fifth upper bottom portion u511 and the fifth lower upper portion d511, and the fifth process upper second mold u520 continues to descend, so that the pressurized inner side is sheared and separated between the fifth upper shearing pressurization portion u521 and the fifth lower upper portion d511 in the vertical direction. The sheared and separated inner portion of the fourth molded product F500 becomes the second track wheel FR2, and the outer portion becomes the annular outer diameter trimming portion OB.

[0074] The second rail wheel FR2 includes: an annular second rail wheel annular portion FR23, which is formed by the remaining part of the fourth molded annular portion F510 separating the outer diameter trimming portion OB from the radial outer side; a second rail wheel curved portion FR21, which is arranged in a curved form on the radial inner side of the second rail wheel annular portion FR23. A cylindrical portion having a fourth molded cylindrical portion F530 is provided between the second rail wheel annular portion FR23 and the second rail wheel curved portion FR21. The second rail wheel curved portion FR21 has a recessed second rail wheel track surface FR21-1 on the radial inner side. An annular portion is provided on the radial inner side of the second rail wheel curved portion FR21.

[0075] Since the manufacturing method as described above is used, compared with a method of manufacturing the first rail wheel FR1 and the second rail wheel FR2 separately, it has the effect of being able to be manufactured in a shorter manufacturing time, shortening the manufacturing process and reducing the input circular plate F100.

[0076] Industrial Application Possibility

[0077] According to the pillar-rail wheel composite sheet forming and manufacturing method of the present invention, the first rail wheel and the second rail wheel can be manufactured in one process, thereby shortening the manufacturing time and manufacturing process, and reliably realizing the forming of the first rail wheel during the manufacturing process, thereby suppressing the occurrence of defects and minimizing the loss of material required for manufacturing, reducing manufacturing costs and increasing efficiency.

Claims

1. A method for forming and manufacturing a composite sheet material of a support rail wheel, as a method for forming and manufacturing a composite sheet material of a support rail wheel, manufacturing a second rail wheel (FR2) and a first rail wheel (FR1), wherein: The second rail wheel (FR2) comprises: a second rail wheel annular portion (FR23); a second rail wheel curved portion (FR21), which is arranged radially inside the second rail wheel annular portion (FR23) and is bent and extended, so as to have a concave second rail wheel track surface (FR21-1) on the radial inside; the first rail wheel (FR1) comprises: a first rail wheel annular portion (FR13); a first rail wheel curved portion (FR11), which is arranged radially outside the first rail wheel annular portion (FR13) and is bent and extended, so as to form a concave first rail wheel track surface (FR11-1) on the radial outside; and the first rail wheel (FR1) has an outer diameter that is larger than the inner diameter of the second rail wheel (FR2) and smaller than the outer diameter of the second rail wheel (FR2), and is characterized in that it comprises: A circular plate forming process, forming and molding a circular plate (F100) from a plate; a first molding process, molding the circular plate (F100) into a first molded product (F200); an inner diameter trimming process, shearing off a portion of the inner diameter portion of the first molded product (F200) to form a second molded product (F300); a separation shearing process, shearing off a ring portion of a portion separated outward from the inner diameter end of the second molded product (F300), so that the second molded product (F300) is formed into a first track wheel (FR1) and a third molded product (F400); a fourth molding process, molding the third molded product (F400) into a fourth molded product (F500); an outer diameter trimming process, shearing off a portion of the outer diameter portion of the fourth molded product (F500), so that the fourth molded product (F500) is separated into a plate-shaped ring-shaped outer diameter trimming portion (OB) and a second track wheel (FR2); The first molded product (F200) includes: a first molded annular portion (F210) in a plate-like ring shape from the radial outer side; a cylindrical first molded cylindrical portion (F230) connected to the first molded first curved portion (F220) from the radial inner side of the first molded annular portion (F210); a first molded second curved portion (F240) arranged on the radial inner side of the first molded cylindrical portion (F230) and having a first molded first concave surface (F241) formed on the radial inner side; the first molded a third curved portion (F250), which is connected to the first molded second curved portion (F240) through an annular portion and is arranged radially inward, and has a first molded second concave surface (F251) formed on the radially outward side; a first molded second annular portion (F280), which is connected to the radially inner side of the first molded third curved portion (F250) through a first molded fourth curved portion (F270), and is formed in an annular shape, so as to be axially spaced from the first molded annular portion (F210) and radially inwardly spaced; In the inner diameter correction process, a radially inner portion of the first molded second annular portion (F280) is sheared and separated into an annular shape, and in the separation shearing process, an annular portion between the first molded second curved portion (F240) and the first molded third curved portion (F250) is sheared and separated; In the first molding process, an upper protrusion (u128) in the form of a ring protruding downward is provided on the inner diameter side of the second mold (u120) in one process, and a lower protrusion (d121) in the form of a ring protruding upward is provided on the inner diameter side of the second mold (d120) in one process, and the circular plate (F100) is clamped and sheared by the upper protrusion (u128) and the lower protrusion (d121).

2. The method for forming and manufacturing the composite sheet material of the support rail wheel according to claim 1, characterized in that: In the outer diameter trimming process, a radially outer portion of the first molded annular portion (F210) is sheared off and separated into a ring shape, so that the radially inner portion is formed into the second raceway wheel (FR2).

3. The method for forming and manufacturing the composite sheet material of the support rail wheel according to claim 2, characterized in that: In the fourth molding process, the radially outer recessed surface of the third molded first curved portion (F420), i.e., the third molded first recessed surface (F421), is radially pressurized inward, thereby reducing the radius of curvature and pulling the third molded second curved portion (F440) axially toward one side of the third molded annular portion (F410), thereby forming a fourth molded product (F500) having a fourth molded second curved portion (F540) with a reduced inner diameter.

4. The method for forming and manufacturing the composite sheet material of the support rail wheel according to claim 1, characterized in that: In the inner diameter trimming process, the second upper side surface portion (u211) of the second process upper mold (u210) contacts the second molded cylindrical portion (F330), and the second upper second bottom portion (u215) and the second upper circular portion (u213) of the second process upper mold (u210) are separated from the second molded second curved surface (F341), thereby forming a space (G) therebetween, and when the second molded second cylindrical portion (F360) and the second molded second curved portion (F340) are not pressurized by the second process upper mold (u210), the inner diameter side of the first molded second annular portion (F280) is sheared off.

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