WO2007026756A1 - 環状部材の製造方法および脚付き環状部材 - Google Patents
環状部材の製造方法および脚付き環状部材 Download PDFInfo
- Publication number
- WO2007026756A1 WO2007026756A1 PCT/JP2006/317094 JP2006317094W WO2007026756A1 WO 2007026756 A1 WO2007026756 A1 WO 2007026756A1 JP 2006317094 W JP2006317094 W JP 2006317094W WO 2007026756 A1 WO2007026756 A1 WO 2007026756A1
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- WO
- WIPO (PCT)
- Prior art keywords
- annular member
- leg
- connecting portion
- annular
- manufacturing
- Prior art date
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Classifications
-
- 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
- B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
- B21K1/762—Coupling members for conveying mechanical motion, e.g. universal joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- 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
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
-
- 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
- B21K1/40—Making machine elements wheels; discs hubs
Definitions
- the present invention relates to a method for manufacturing an annular member and an annular member with legs. Specifically, an annular member with legs, in which at least one leg is formed at a substantially right angle on the outer periphery of the annular part.
- the present invention relates to an annular member manufacturing method and a legged annular member.
- Patent Document 1 Japanese Patent Laid-Open No. 2001-105085
- the method for manufacturing an annular member of the present invention employs the following means in order to achieve at least a part of the above-described object.
- the method for producing the annular member of the present invention includes:
- a skirt comprising a circular bottom portion having a hole in the center, a leg portion constituting the leg on the outer periphery of the bottom portion, and a connecting portion for connecting the leg portion by a single press working on the rough material.
- a circular bottom portion having a hole in the center and a leg portion are connected to the outer periphery of the bottom portion by a single press process on the prepared annular rough material.
- a work member made up of a skirt-like outer wall part made up of a connecting part to be formed is formed, and the connecting part is removed from the formed uniform member to form a legged annular member. Therefore, there is no need to bend the legs.
- a workpiece member having a cylindrical standing wall portion coaxial with the outer wall portion is formed along the central hole at the bottom by a single pressing force against the annular rough material, the rough material (material) ) Flow direction can be increased, and the load (pressure) required to press the rough material can be further reduced.
- step (b) and subsequent steps may be performed by cold forging. In this way, since it is not necessary to heat, the time required for cooling can be shortened.
- annealing is not performed.
- the annular member can be manufactured without annealing the crude material.
- the annealing step and the cooling step after the annealing can be eliminated, and the time required to manufacture the rough material annular member can be shortened.
- the work member in the step (b), is formed so that an outer diameter of the connecting portion in the outer wall portion is larger than an outer diameter of the leg portion.
- the step (C) includes a step (cl) of removing the connecting portion so that the connecting portion of the outer wall portion is scraped off by a force acting in the leg direction from the leg portion. It can also be. If it carries out like this, a connection part can be removed easily.
- the step (b) may be a step of forming the work member such that an inner diameter of the connecting portion in the outer wall portion is larger than an inner diameter of the leg portion.
- the step (b) may be a step of forming the work member so that the inner diameter of the connecting portion in the outer wall portion substantially matches the outer diameter of the leg portion.
- the step (cl) may be a step of removing the connecting portion and cutting off a portion including the hole at the bottom of the work member. In this way, the number of steps can be reduced compared to the case where the connecting portion is removed and the portion including the hole at the bottom of the first member is cut off in separate steps, and the rough material is also circular. The time required to manufacture the member can be shortened.
- the thickness of the connecting portion which is a connecting portion between the leg portion and the connecting portion
- the thickness of the leg portion and the connecting portion is the thickness of the leg portion and the connecting portion.
- Department of meat It may be a step of forming the workpiece member so as to be thinner than the thickness.
- the step (b) is a step of forming the work member so that a thickness of the connecting portion is thinner than a thickness of the leg portion. You can also do this. By doing so, the amount of the coarse material that flows to the connecting portion side during the press working can be reduced as compared with the case where the thickness of the connecting portion is substantially the same as the thickness of the leg portion. As a result, it is possible to reduce the waste of materials before the production of the coarse material force annular member.
- the base member is formed so that a base of the inner side of the leg part to the bottom part is thicker with a larger radius than a base of the connecting part to the bottom part. It can also be a process to do. In this way, the strength of the base of the leg can be increased, and cracks can be prevented from entering the base of the leg during plastic deformation by press working.
- the step (c) includes a step (c2) of expanding the inner diameter of the leg portion after removing the formed cake member force connecting portion.
- the step (c) includes the step (c3) of deburring the connecting portion of the leg portion with the connecting portion after removing the formed work member force connecting portion. It can also be a process including.
- the step (c) includes the roughness or flatness of at least the inner surface of the bottom after removing the formed work part material force connecting part. It may be a step including a step (c4) of arranging at least one of the above.
- the step (a) is a step of preparing a rough material that has been subjected to a bond treatment in which a surface coating containing metal soap is applied to the surface
- the step (c4) is a step of removing the metal soap.
- the force may be a step of adjusting at least one of the roughness or flatness of the surface. In this way, the roughness and flatness of the inner surface of the bottom can be adjusted.
- the step (b) includes forming the work member having a cylindrical standing wall portion coaxial with the outer wall portion along a central hole of the bottom portion. It can also be a process to do. In this way, the flow direction of the rough material during one pressing force can be increased, and the load required for pressing the rough material can be further reduced.
- the step (b) changes the thickness of the connecting portion according to the distance from the leg portion.
- the work member may be formed so that the length to the end of the standing wall is adjusted. In this way, the length to the end of the standing wall can be adjusted.
- the step (b) may be a step of forming the work member such that the thickness of the connecting portion increases smoothly as the distance of the leg force increases.
- the step (b) may be a step of forming the work member so that an end portion of the standing wall portion is smooth along a circumference of the standing wall portion.
- the step (b) includes the workpiece member so that an inner peripheral surface of the standing wall portion has a predetermined shape. It can also be a process of forming.
- the step (b) may be a step of forming the workpiece member so as to have a spline shape as the predetermined shape. This makes it easier for the coarse material to flow toward the standing wall when performing the press work, and the load required for the press work on the coarse material can be further reduced.
- the step (b) is performed in the same direction as the outer wall portion with respect to the central hole of the bottom portion. It may be a step of forming the work member having the standing wall portion including a first standing wall portion and a second standing wall portion in a direction opposite to the outer wall portion with respect to the central hole of the bottom portion. .
- the step (c) is a step including a step (c5) of removing the first standing wall portion after removing the connection portion from the formed work member.
- the annular member may be a carrier in a planetary gear mechanism.
- the annular member in addition to such a carrier, at least one leg is formed at a substantially right angle on the annular annular portion and the outer periphery of the annular portion. As long as it is an annular member with legs, it can be anything.
- the legged annular member of the present invention comprises:
- An annular member with legs in which at least one leg is formed at a substantially right angle on the outer periphery of the annular part and the annular part,
- a circular bottom having a hole in the center, formed by a single press working on an annular rough material, and a leg part constituting the leg on the outer periphery of the bottom part and a connecting part for connecting the leg part
- the legged annular member of the present invention comprises a circular bottom having a hole in the center, formed by a single press process on an annular rough material, a leg on the outer periphery of the bottom, and the leg.
- a skirt-like outer wall portion including a connecting portion to be connected and a work member member that also has a force are formed by removing the connecting portion. Therefore, it is possible to manufacture the legged annular member with less manufacturing process than the annular coarse material force as compared with the bending force of the leg portion, and to manufacture the annular coarse material legged annular member. Can be shortened.
- the work member is formed such that an outer diameter of the connecting portion in the outer wall portion is larger than an outer diameter of the leg portion.
- the annular member may be formed by removing the connecting portion so that the connecting portion in the outer wall portion is scraped off by a force acting in the leg direction from the leg portion.
- the workpiece member may be formed such that an inner diameter of the connecting portion in the outer wall portion is larger than an inner diameter of the leg portion.
- the work member is formed so that the inner diameter of the connecting portion in the outer wall portion is substantially matched with the outer diameter of the leg portion.
- the annular member with legs is formed by removing the connecting portion and cutting off a portion including the hole at the bottom of the work member. It can also be. Further, the workpiece member is formed such that the thickness of the connecting portion, which is the connecting portion between the leg portion and the connecting portion, is thinner than the thickness of the leg portion and the connecting portion. Chisaru [0025] Further, in the legged annular member of the present invention, the work member may be formed such that a thickness of the connecting portion is thinner than a thickness of the leg portion. In addition, the base member is formed such that the base to the bottom inside the leg is thick and has a larger radius than the base to the bottom inside the connecting portion. You can also.
- the legged annular member is formed by expanding the inner diameter of the leg part after removing the formed work member force connecting part. It can also be. Further, the annular member with legs may be formed by deburring the connecting portion of the leg portion with the connecting portion after removing the formed cake member force connecting portion. .
- the legged annular member has at least the roughness or flatness of at least the inner surface of the bottom after removing the formed work member force connecting portion. It can also be formed by arranging one side.
- the annular rough material is a rough material that has been subjected to a bondage treatment in which a surface coating containing metal soap is applied to the surface, and the legged annular member is subjected to a treatment to remove the metal soap and the force is also applied to the surface. It should be formed by adjusting at least one of roughness and flatness.
- the work member is a member having a cylindrical standing wall portion coaxial with the outer wall portion along a central hole of the bottom portion. Do what you want.
- the work member changes the wall thickness of the connecting portion according to the distance from the leg portion. It can also be formed by adjusting the length to the end of the standing wall. In this case, the work member may be formed such that the thickness of the connecting portion increases smoothly as the distance of the leg force increases.
- the work member in which the work member has an upright wall portion, may have an inner peripheral surface of the upright wall portion formed in a predetermined shape. it can.
- the workpiece member has a spline-shaped inner peripheral surface of the standing wall portion. It is a word that has been formed.
- the work member in which the work member has an upright wall portion, has a first upright wall portion in the same direction as the outer wall portion with respect to a central hole of the bottom portion.
- the standing wall portion may be formed of a second standing wall portion in a direction opposite to the outer wall portion with respect to the central hole of the bottom portion.
- the annular member with legs may be formed by removing the work member force and the first standing wall portion after removing the formed work member force and the connecting portion.
- the legged annular member of the present invention may be a carrier in a planetary gear mechanism.
- FIG. 1 is a perspective view showing an appearance of a carrier 20.
- FIG. 2 is an AA view of the carrier 20 of FIG. 1 viewed from the AA plane.
- FIG. 3 is a process diagram showing an example of how the carrier 20 is manufactured.
- FIG. 4 is a perspective view showing the appearance of a coarse material 20a.
- FIG. 5 is a perspective view showing an appearance of a work member 20b.
- FIG. 6 is an AA view of the workpiece member 20b of FIG. 5 viewed from the AA plane.
- FIG. 7 is a BB view of the workpiece member 20b of FIG. 5 as seen from the BB plane.
- FIG. 8 is a cross-sectional view of the processing apparatus 40.
- FIG. 9 is an AA view of the processing apparatus 40 of FIG. 8 as seen from the AA plane.
- FIG. 10 is a BB view of the processing apparatus 40 of FIG. 8 as seen from the BB plane.
- FIG. 11 is a cross-sectional view of the processing apparatus 40 when forming the workpiece member 20b from the coarse material 20a.
- FIG. 12 is a cross-sectional view of the EE cross section of the processing apparatus 40 in FIG. 11.
- FIG. 13 is a perspective view showing an appearance of a legged annular member 20c.
- FIG. 14 is an AA view of the workpiece member 20c of FIG. 13 viewed from the AA plane.
- FIG. 15 is a BB view of the workpiece member 20c of FIG. 13 viewed from the BB plane.
- FIG. 16 is a cross-sectional view of the shearing device 60.
- FIG. 17 is an AA view of the shearing device 60 of FIG. 16 viewed from the AA plane.
- FIG. 18 is a BB view showing a BB surface of the shearing device 60 of FIG.
- FIG. 19 is an explanatory view showing a state in which the shearing device 60 is used to cut off the connecting portion 27 and the portion including the inner wall portion 24 from the work member 20b.
- FIG. 20 is a cross-sectional view of the EE cross section of the shearing device 60 of FIG.
- FIG. 21 is an explanatory view showing how the inner diameter of the leg portion 26c of the legged annular member 20c is increased.
- FIG. 22 is an explanatory view showing a portion for deburring the legged annular member 20c.
- FIG. 23 is an explanatory view showing a portion for performing coining of the legged annular member 20c.
- FIG. 24 is a process diagram showing an example of how the carrier 20 of the modified example is manufactured.
- FIG. 25 is a perspective view showing an appearance of a legged annular member 20d with an inner wall portion.
- FIG. 26 is an explanatory view showing an example of a lower side 50b of a processing apparatus 40B according to a modification.
- FIG. 27 is a perspective view showing an appearance of a work member 120b.
- FIG. 28 is an AA view of the workpiece member 120b of FIG. 27 viewed from the AA plane.
- FIG. 29 is a BB view of the workpiece member 120b of FIG. 27 viewed from the BB plane.
- FIG. 30 is a perspective view showing an appearance of a work member 220b.
- FIG. 31 is an AA view of the workpiece member 220b of FIG. 30 viewed from the AA plane.
- FIG. 32 is a BB view of the workpiece member 220b of FIG. 30 viewed from the BB plane.
- FIG. 1 is a perspective view showing the appearance of a carrier 20 manufactured by the method for manufacturing an annular member as one embodiment of the present invention.
- FIG. 2 shows the carrier 20 of FIG. AA view of force.
- the carrier 20 manufactured by the manufacturing method of the embodiment is formed with an annular bottom portion 22 having a hole 23 formed in the center and an outer periphery of the bottom portion 22 at a substantially right angle to the bottom portion 22.
- the leg portion 26 is composed of four legs, and a boss portion 28 formed as a hollow shaft on the opposite side of the leg portion 26 with respect to the bottom portion 22.
- FIG. 3 is a process diagram showing how the carrier 20 of the embodiment is manufactured.
- Production of the carrier 20 begins with a process for preparing the annular coarse material 20a illustrated in FIG. 4 (process S100).
- the coarse material 20a is formed as an annular member having an inner diameter R1 and an outer diameter R2.
- This coarse material 20a is specifically made of a material that can be cold forged (for example, low carbon steel, low carbon alloy steel, aluminum, Prepare a rod of aluminum alloy (copper, copper alloy, etc.) (process SI 10) and form an annular member with a hole in the center by hot forging, warm forging, or cold forging. Shi
- Step S 120 the formed annular member is softened (Step S 130), and shot blasting is performed to remove the scale on the surface of the annular member (Step S 140).
- Step S 140 Perform C-face cutting (chamfering) and width cutting to shape the shape of the steel! / ⁇ (process S 150, S 160), and perform bondering (process S170) to manufacture.
- a chemical conversion film for example, a phosphate film
- FIGS. 5 to 7 are views of the workpiece member 20b illustrated in FIGS. 5 to 7 by pressing the prepared annular coarse material 20a once (step S200).
- Fig. 5 is a perspective view of the appearance of the workpiece member 20b
- Fig. 6 is an AA view of the workpiece member 20b of Fig. 5 as seen from the A-A plane
- Fig. 7 is a B-B view of the workpiece member 20b of Fig. 5. It is sectional drawing which shows a cross section. As shown in FIGS.
- the work member 20b has a circular shape with an outer diameter R6 having a hole 23b with a diameter R3 and an inner wall portion 24b with an inner diameter R3 and an outer diameter R4 around the hole 23b in the center.
- R6 outer diameter
- the bottom portion 22b and the bottom portion 22b on the same side as the inner wall portion 24b with respect to the bottom portion 22b and formed on the outer periphery of the bottom portion 22b and substantially perpendicular to the bottom portion 22b.
- An outer wall portion 25b composed of a connecting portion 27b having an inner diameter R7 and an outer diameter R8, which is connected to the leg portion 26b and is substantially equal to the outer diameter R6 of the bottom portion 22b, and an inner wall portion 24b opposite to the outer wall portion 25b with respect to the bottom portion 22b.
- a boss portion 28b formed in a cylindrical shape of a hollow shaft having an inner diameter R9 slightly larger than the inner diameter R3 and an outer diameter R10 smaller than the outer diameter R6 of the bottom portion 22b.
- the thickness D1 ((R6-R5) / 2) of the leg portion 26b is formed to be thicker (the thickness is larger) than the thickness D2 ((R8-R7) / 2) of the connecting portion 27b.
- the connecting portion between the leg portion 26b and the connecting portion 27b in the outer wall portion 25b is referred to as a connecting portion 29b.
- the thickness D4 of the connecting portion 29 is formed thinner than the thickness D1 of the leg portion 26b and the thickness D2 of the connecting portion 27b.
- the process of forming the workpiece member 20b is performed using the processing apparatus 40 illustrated in FIG. Figure 8 shows the disconnection of the processing device 40.
- FIG. 9 is an AA view of the processing device 40 of FIG. 8 as viewed from the A-A plane
- FIG. 10 is a BB view of the processing device 40 of FIG. 8 as viewed from the BB plane.
- . 8 corresponds to the CC cross section of the processing apparatus 40 in FIG.
- the processing device 40 also includes an upper die 41 disposed in the upper portion of the processing device 40, and a lower die 50 disposed coaxially with the upper die 41 and a force.
- the upper die 41 is disposed in the lower center of the upper die 41 and is an upper mandrel formed in a cylindrical shape having an outer diameter R11 that is smaller than the inner diameter R1 of the coarse material 20a and is substantially equal to the outer diameter R4 of the inner wall 24b of the work member 20b.
- the lower die 50 is arranged at the center upper part in the lower die 50, and the upper end is formed in a circular shape with an outer diameter R14 that is substantially the same as the outer diameter R3 of the hole 23b of the workpiece member 20b (the inner diameter of the inner wall 24b) Lower end mandrel formed so that the outer diameter gradually increases from the position of length L1 to the inner diameter R9 of the boss part 28b of the workpiece member 20b.
- the first die 53 (see Fig. 10), which has a shape that alternates with the outer diameter R8 of the connecting part 27b! Such as the second die 54 forces formed in a cylindrical hollow shaft so as to contact the outer circumferential surface of the first die 53 becomes.
- the lower die punch 52 is formed to be movable in the vertical direction. Further, the upper end of the first die 53 is lower than the upper end of the second die 54 by a length L2, and the portion formed on the outer diameter R15 of the outer periphery is the outer diameter of the upper die 43. The portion formed on the outer diameter R16 facing the portion formed on R12 is arranged so as to face the portion formed on the outer diameter R13 of the upper punch 43.
- FIG. 11 is an explanatory view for explaining a state in which the workpiece member 20b is formed using the cache device 40
- FIG. 12 is a cross-sectional view of the EE cross section of the processing device 40 of FIG.
- 11 is equivalent to the FF cross section of the processing apparatus 40 in FIG. 12
- the cross section of the lower right processing apparatus 40 in FIG. 11 is the upper right processing apparatus 40.
- the cross section of is further enlarged.
- the upper die 43 is further lowered while pushing down the coarse material 20a and the lower die punch 52.
- the upper mandrel 42 stops descending when the lower end thereof comes into contact with the upper end of the lower mandrel 51.
- the coarse material 20a has a shape formed by the upper die 43, the lower mandrel 51, the lower die 52, the first die 53, and the second die 54, that is, the work member 2 shown in FIGS. Formed in the shape of Ob.
- the thickness D1 of the leg portion 26b of the outer wall portion 25b of the workpiece member 20b is formed to be thicker than the thickness D2 of the connecting portion 27b, the strength of the root of the leg portion 26b to the bottom portion 22b is increased. It is possible to prevent the workpiece member 20b from being damaged by cracking at the base of the bottom portion 26b of the leg portion 26b during plastic deformation. Also, the thickness of the leg part 26b D1 is made thicker than the thickness D2 of the connecting part 27b, so that the thickness D1 and the thickness D2 are almost equal when the press work is performed. In addition, it is possible to reduce the amount of coarse material (material) that flows to the connecting portion 27b side.
- the connecting portion 27b since the connecting portion 27b is cut off, the waste of material can be reduced by reducing the amount of the coarse material flowing toward the connecting portion 27b.
- the outer wall portion 25b formed by the upper die punch 43 and the second die 54, the lower die mandrel 51, the lower die punch 52, the first die 53 In addition to the boss part 28b formed by the lower die mandrel 51 and the upper die punch 43, the substantially cylindrical inner wall part 24b is formed, so that the flow direction of the coarse material 20a during press force is increased. In addition, the pressure required to form the workpiece member 20b from the coarse material 20a can be reduced.
- the workpiece member 20b can be formed from the coarse material 20a by cold forging. As a result, it is possible to reduce the time required for cooling without the need to heat the coarse material 20a as in hot forging. In addition, the temperature change is small compared to those for hot forging. Therefore, plastic deformation can be performed with higher accuracy.
- the sum of the thickness D3 of the bottom portion 22b of the workpiece member 20b and the height L3 of the leg portion 26b (the height of the connecting portion 27b) is The upper end of the first die 53 and the upper end of the second die 54 are formed smaller than the length L2.
- the connecting portion 27b is cut off from the formed work member 20b to form the legged annular member 20c illustrated in FIGS. 13 to 15 (step 310).
- a finishing process is performed on the legged annular member 20c (step S300) to complete the carrier 20 described above.
- 13 is a perspective view of the appearance of the legged annular member 20c
- FIG. 14 is an AA view of the legged annular member 20c of FIG.
- FIG. 6 is a cross-sectional view showing a cross section of the annular member 20c along the line BB. As shown in FIGS.
- the legged annular member 20c has a circular bottom portion 22 having an outer diameter R6 having a hole 23c having an outer diameter R19 that is slightly larger than the outer diameter R4 of the inner wall portion 24b of the workpiece member 20b.
- a leg 26c composed of four legs having an inner diameter R5 and an outer diameter R6 formed substantially perpendicularly to the bottom 22 on the outer periphery of the bottom 22 and an inner diameter on the opposite side of the leg 26c with respect to the bottom 22c.
- a boss portion 28c formed in a hollow shaft cylindrical shape of R19 and an outer diameter R10.
- the legged annular member 20c was formed using the shearing device 60.
- 16 is a cross-sectional view of the shearing device 60
- FIG. 17 is an AA view of the shearing device 60 of FIG. 16 as seen from the A-A plane
- FIG. 18 is a perspective view of the shearing device 60 of FIG. B-B view seen.
- the cross section of the shearing device 60 in FIG. 16 corresponds to the CC cross section of the shearing device 60 in FIG. 17 and the DD cross section of the shearing device 60 in FIG.
- the shearing device 60 is also configured with an upper die 61 disposed in the upper portion of the shearing device 60 and a lower die 65 disposed coaxially with the upper die 61.
- the upper die 61 is formed in a circular shape with an inner diameter R20 that is slightly larger than the outer diameter R19 of the hole 23c of the legged annular member 20c and is arranged in a concave shape at the lower center of the upper die 61.
- the outer circumference is partly equal to the inner diameter R5 of the leg part 26c of the legged annular member 20c and a part of the circle R21 and the outer diameter R6 of the bottom part 22c (the inner diameter R7 of the connecting part 27b of the work member 20b).
- the lower die 65 is a mandrel formed in a cylindrical shape having an outer diameter R23 that is substantially equal to the outer diameter R19 of the hole 23c of the annular member 20c with a leg disposed at the center upper part in the lower die 65.
- the outer peripheral surface is in contact with the outer peripheral surface of the mandrel 66, and the outer periphery is substantially the same as the outer diameter R6 of the bottom 22c of the legged annular member 20c.
- the lower die punch 67 is formed in a shape that alternates with a part of the circle of R25, and the upper end is formed in a shape on which the work member 20b can be placed, and the inner peripheral surface is in contact with the outer peripheral surface of the lower die punch 67.
- a force such as a die 68 formed in a cylindrical shape of a hollow shaft is also provided.
- the lower punch 67 is formed so as to be movable in the upward and downward direction, and the portion formed on the outer diameter R24 of the outer periphery is opposed to the portion formed on the outer diameter R21 of the upper punch 62 and is The portion formed in the diameter R25 is arranged so as to face the portion formed in the outer diameter R22 of the upper die punch 62.
- FIG. 19 is an explanatory view showing a state in which the shearing device 60 is used to cut off the portion including the connecting portion 27 and the inner wall portion 24 from the work member 20b
- FIG. 20 is an enlarged view of the shearing device 60 of FIG. It is sectional drawing which shows the EE cross section.
- the cross section of the shearing device 60 in FIG. 19 corresponds to the FF cross section in FIG.
- the leg portion 26b of the workpiece member 20b is formed on the outer diameter R24 of the lower die punch 67 so as to be coaxial with the mandrel 66.
- the work member 20b is placed on the upper end of the lower punch 67 so that the connecting portion 27b faces the portion formed on the outer diameter R25 of the lower die 67.
- lower the upper mold 61 in that state.
- the upper die punch 62 comes into contact with the bottom 22b of the workpiece member 20b, the upper die 61 is further lowered while pushing down the workpiece member 20b and the lower die punch 67.
- the inner wall portion 24b of the work member 20b is moved by the shearing force between the inner side of the lower end portion of the upper die punch 62 and the outer side of the upper end portion of the mandrel 66.
- the shearing force between the part formed on the outer diameter R22 outside the lower end of the upper die 62 and the part formed on the outer diameter R25 inside the upper end of the die 67 is connected to the connecting part 27b.
- the connecting portion 27b is cut off by acting on the root of the bottom portion 22b and the connecting portion 29b.
- the work member 20b is cut down from the boss portion 28b side of the work member 20b from the boss portion 28b side while being pushed down by the upper die punch 62 with the bottom portion 22b in contact with the upper die punch 62.
- the connecting part 27b is cut off from the boss part 28b side (the base side of the connecting part 26b to the bottom 22b). In this way, connecting part 27b By cutting off, the connecting portion 27b can be easily cut off.
- the connecting portion 27b is cut off from the workpiece member 20b, as described above, the workpiece member 20b is formed such that the thickness D1 of the leg portion 26b is thicker than the thickness D2 of the connecting portion 27b.
- the workpiece member 20b is formed such that the thickness D4 of the connecting portion 29b is thinner than the thickness D1 of the leg portion 26b and the thickness D2 of the connecting portion 27b.
- the load (pressure) required to cut off the connecting portion 27b from the work member 20b can be reduced as compared to the thickness D1 and the thickness D2 of the connecting portion 27b.
- a circular bottom portion 22c having a hole 23c in the center, four leg portions 26c formed substantially perpendicular to the bottom portion 22c on the outer periphery of the bottom portion 22c, and a leg portion 26c with respect to the bottom portion 22c
- a boss portion 28c formed in a cylindrical shape of a hollow shaft and an annular member 20c with a forceful leg are formed.
- step S320 the finishing process (steps S320 to S350) of the legged annular member 20c is performed so that the inner diameter of the leg part 26c of the formed legged annular member 20c increases as shown in FIG.
- step S320 Processing to expand 26 c outward (in the direction of the arrow in the figure) (step S320), as shown in FIG. 22, a cross-section of the connecting part 27b cut off when forming the legged annular member 20c (the side of the leg part 26c) ) (Step S330), removal of metal soap coated on the surface of the legged annular member 20c (step S340), as illustrated in FIG. 23, the bottom 22c of the legged annular member 20c.
- a coining process step S350 for smoothing the surface (shaded part) of the film.
- a work member 20b composed of a skirt-like outer wall portion 25b composed of a leg portion 26b and a connecting portion 27b for connecting the leg portion 26b is formed on the outer periphery of the bottom portion 22b, and the connecting portion 27b is formed from the formed rib member 20b.
- the plastic deformation is the pressing force of process S200 during the process from rough material 20a to completion of carrier 20! ] This is done only once!
- a circular bottom portion 22b having a hole 23b in the center and a leg on the outer periphery of the bottom portion 22b by one press carriage with respect to the prepared circular coarse material 20a.
- the carrier 20 of the embodiment since the workpiece member 20b is formed from the coarse material 20a by cold forging, the coarse material 20a is heated or the formed workpiece member 20b is cooled. No time is required. As a result, it is possible to further shorten the time until the carrier 20 completes the force of the coarse material 20a.
- the force may be used so that the connecting portion 27b and the portion including the inner wall portion 24b are simultaneously cut off from the work member 20b.
- An example of the manufacturing method of the carrier 20 in this case is shown in FIG.
- the method for manufacturing carrier 20 in FIG. 24 is the same as the method for manufacturing carrier 20 in FIG. 3 except that step S400 is performed instead of step S300 in the manufacturing step in FIG.
- the connecting portion 27b is cut off from the formed work member 20b to form the legged annular member 20d with the inner wall shown in FIG. 25 (step S410), and the formed legged annular member with the inner wall is formed.
- carrier 20 To do In the manufacturing method of the carrier 20 of this modified example, since the work member 20b is formed by a single press carriage for the prepared annular rough material 20a, as in the manufacturing method of the carrier 20 of the embodiment, There is no need to anneal the material 20a to the completion of the carrier 20. As a result, it is possible to reduce the process from the coarse material 20a to the production of the carrier 20, and to shorten the time from the production of the coarse material 20a to the production of the carrier 20. Further, since the workpiece member 20b is formed from the coarse material 20a by cold forging as in the manufacturing method of the carrier 20 of the embodiment, the coarse material 20a is heated or the formed workpiece member 20b is cooled. No time is required. As a result, the time from the coarse material 20a to the completion of the carrier 20 can be further shortened.
- the force obtained by cutting off the connecting portion 27b and the portion including the inner wall portion 24b from the work member 20b is cut off only the connecting portion 27b to obtain a portion including the inner wall portion 24b. Do n’t cut it off.
- the inner wall portion 24b and the boss portion are formed.
- the inner peripheral surface of the inner wall portion 24b and the boss portion 28b has a predetermined shape (for example, a spline shape or a selection shape).
- the workpiece member 20b may be formed.
- An example of the lower die 50b of the processing device 40B used when the inner peripheral surface of the inner wall portion 24b is formed in a spline shape is shown in FIG. 26, and an example of the work member 120b formed by the additional device 40B is shown in FIGS. Figure 29 shows.
- FIG. 26 is a perspective view of the external appearance of a workpiece member 120b according to a modified example
- FIG. 28 is an AA view of the workpiece member 12 Ob of FIG. 27 as seen from the AA plane
- FIG. 6 is a BB view of the work member 120b as seen from the BB surface force.
- the inner wall 124b is formed in the same shape as the work member 20b of FIGS. 5 to 7 except that the inner peripheral surface of the inner wall 124b has a spline shape.
- symbol was used about the part formed in one shape.
- the sealing state of the coarse material 20a on the inner peripheral side of the inner wall portion 124b is relaxed when the inner wall portion 124b is formed by press calorific processing.
- the coarse material 20a easily flows to the inner wall portion 124b side, and the load required for pressing can be further reduced.
- the inner peripheral surface of the inner wall portion 124b is formed in a spline shape during one press calo in this way, the inner peripheral surface of the inner wall portion 24 is changed to a spline shape until the carrier 20 is manufactured.
- the inner peripheral surface of the inner wall portion 124b is not limited to the spline shape, and the inner wall portion 124b is not limited to the spline shape.
- the inner peripheral surface of the inner wall portion 24b may have an uneven shape as long as the sealed state is relaxed and the coarse material 20a easily flows to the inner wall portion 24b side.
- the process after preparing the coarse material 20a is performed by cold forging.
- the process is not limited to cold forging, and is performed by warm forging or hot forging. It's good to do it.
- annealing is not performed in the process after the coarse material 20a is prepared, but annealing may be performed.
- the outer wall portion 25b is formed so that the thickness D1 of the leg portion 26b of the work member 20b is thicker than the thickness D2 of the connecting portion 27b.
- the outer wall 25b may be formed so that the thickness D1 of 26b is substantially the same as the thickness D2 of the connecting portion 27b, and the thickness D1 of the leg portion 26b is slightly thinner than the thickness D2 of the connecting portion 27b. As the outer wall portion 25 is formed.
- the work member 20b is formed so that the thickness D2 of the connecting portion 27b is substantially uniform along the inner periphery of the connecting portion 27b.
- the workpiece member 20b may be formed so that the thickness of the connecting portion 227b increases toward the center of the connecting portion 27b along the inner periphery of the connecting portion 27b.
- Figure 30 shows this FIG. 31 is a perspective view of the appearance of the work member 220b formed in this case, FIG. 31 is a view of the work member 220b of FIG. 30 taken along the line AA, and FIG. 32 is a view of the work member 220b of FIG. It is a BB view from the B-B side.
- FIG. 31 is a perspective view of the appearance of the work member 220b formed in this case
- FIG. 31 is a view of the work member 220b of FIG. 30 taken along the line AA
- FIG. 32 is a view of the work member 220b of FIG. It is a BB view from the B-B side.
- D21 is a thickness corresponding to the thickness D2 ((R8—R7) Z2) of the connecting portion 27b of the workpiece member 20b of the embodiment
- D22 is a thickness that is thicker than the thickness D21. It is. 30 to 32, since the shape (thickness) of the connecting portion 227b and the shape of the end of the inner wall portion 224b are different, the shape is the same as the work member 20b of FIGS. 5 to 7. The same reference numerals are used for portions formed in the same shape.
- the workpiece member 20b and the workpiece member 220b are formed by press carriage. At this time, in the embodiment, as shown in FIG.
- the upper die punch 43 and the second die 54 form the outer wall portion 25b which also has the force of the leg portion 26b and the connecting portion 227b
- the lower mandrel 51 and A boss portion 28 b is formed by the lower mold punch 52 and the first die 53
- an inner wall portion 24 b is formed by the lower mold mandrel 51 and the upper mold punch 43.
- the lower die punch 52 since the lower die punch 52 is disposed on the end portion (the lower end portion of the boss portion 28b in FIG. 7) of the boss portion 28b, the lower die punch 52 extends to the end portion side.
- the length from the bottom 22b to the end of the boss 28b is substantially constant along the circumference of the boss 28b.
- the inner wall 24b is free on the end (the upper end of the inner wall 24b in FIG. 7), so that the extension to the end is not limited, and the flow of the coarse material 20a is not limited.
- the length from the bottom 22b to the end of the inner wall 24b may not be constant along the circumference of the inner wall 24b, and the end of the inner wall 24b may be formed in a wavy shape.
- the coarse material 20a flows in the position facing the leg portion 26b in the inner wall portion 28 than in the position facing the connecting portion 27b. Therefore, the length from the bottom 22b to the end of the inner wall 24b facing the leg 26b is longer than the length from the bottom 22b to the end facing the connecting portion 27b. Immediately, the end of the inner wall 24b tends to have a wavy shape.
- the connecting portion 227b is formed to be large, that is, the processing device (not shown) having a second die (not shown) formed to form such a connecting portion 227b instead of the second die 54 of the processing device 40. If the press working is performed using the, the material 20a easily flows also to the position of the inner wall portion 224b facing the connecting portion 227b, thereby suppressing the deviation of the ease of flow of the coarse material 20a. As a result, the length from the bottom 22b to the end of the inner wall 224b can be prevented from greatly changing along the circumference of the inner wall 224b, and the end of the inner wall 224b becomes a wavy shape. Can be suppressed.
- the inner wall portion is formed by forming the connecting portion 227b along the inner periphery of the connecting portion 227b from the end side to the center side of the connecting portion 227b so that the thickness increases from the thickness D21 to the thickness D22.
- the end of 224b is prevented from having a wavy shape, the present invention is not limited to this.
- the length from the bottom 22b to the end of the boss 28b is limited using the lower die 52.
- the length from the bottom 22b to the end of the inner wall 24b may be limited using a member that limits the extension of the inner wall 24b to the end.
- neither the length from the bottom 22b to the end of the boss 28b nor the length from the bottom 22b to the end of the inner wall 24b may be limited.
- a member that limits the extension of the inner wall portion 24b to the end portion side is used instead of the lower die punch 52.
- the coarse material 20a extends to the end portion side of the inner wall portion 24b, the thinner the outer wall portion 25b, the easier the coarse material 20a flows to the boss portion 28b side.
- the thickness D1 of the leg portion 26b is thicker than the thickness D2 of the connecting portion 27b and the thickness of the leg portion 26b and the connecting portion 27b is substantially constant along the outer periphery of the bottom portion 22b as in the embodiment, the inner wall portion 28b Of these, the coarse material 20a is more likely to flow at a position facing the connecting portion 27b than at a position facing the leg portion 26b, so that the end of the boss portion 28b is likely to have a wavy shape.
- the distance from the leg portion 26b is large at a position facing the approximate center of the connecting portion 27b along the inner periphery of the connecting portion 27b. Since the coarse material 20a easily flows, the length from the bottom 22b to the end of the boss 28b tends to be long. On the other hand, as shown in FIGS. 30 to 32, the distance from the leg portion 22b increases, that is, along the inner periphery of the connection portion 227b, from the end side to the center side of the connection portion 227b. If the connecting portion 227b is formed so that the thickness increases from the thickness D21 to the thickness D22, that is, the connecting portion 227b is formed instead of the second die 54 of the processing device 40.
- the raw material 20a is less likely to flow at a position facing the connecting portion 227b in the boss portion 28b, thereby causing the coarse material 20a.
- the deviation of the flowability of the is suppressed.
- the bottom 22b force can also be prevented from greatly changing the length to the end of the boss portion 28b along the circumference of the boss portion 28b, and the end portion of the boss portion 28b becomes a wavy shape. Can be suppressed.
- the boss portion 28b is formed by forming the connecting portion 227b along the inner circumference of the connecting portion 227b from the end side to the center side of the connecting portion 227b so that the thickness increases from thickness D21 to thickness D22. Force that prevents the end from becoming a wavy shape Not limited to this, by changing the thickness of the connecting portion 227b according to the distance from the leg 26b, the bottom 22b to the boss 28b What is necessary is just to adjust the length to the edge part.
- the outer wall portion 25b is formed so that the outer diameter R6 of the leg portion 26b of the work member 20b and the inner diameter R7 of the connecting portion 27b substantially coincide with each other.
- the outer wall portion 25b may be formed so that either one of the outer diameter R6 and the inner diameter R7 of the connecting portion 27b is slightly larger.
- the force bottom portion 22b that forms a work member 20b having a force such as a circular bottom portion 22b having a hole 23b and an inner wall portion 24b around the hole 23b in the center, Do not have an inner wall 24b around the hole 23b!
- the connecting portion 27b is removed from the work member 20b by applying a force in the direction of the connecting portion 27b to the base portion 22b of the connecting portion 27b of the work member 20b.
- the connecting portion 27b may be removed from the work member 20b by applying a force in the outward direction from the inside of the connecting portion 27b (inside of the outer wall portion 25b).
- the outer wall portion 25b may be formed so that the outer diameter R8 of the connecting portion 27b is substantially the same as the outer diameter R6 of the leg portion 26b.
- the connecting portion 27b is cut off from the work member 20b to form the legged annular member 20c, and then the inner diameter of the leg portion 26c of the legged annular member 20c is widened. Force to deburr the side of 26c, remove the metallic soap coated on the surface, and perform coining to adjust the surface roughness and flatness of the bottom 22c. A plurality of steps may not be performed.
- the carrier 20 includes a circular bottom 22 having a hole 23 formed in the center, and four legs formed on the outer periphery of the bottom 22 at a substantially right angle to the bottom 22.
- a force boss 28 which is composed of a leg 26 and a boss 28 formed in a cylindrical shape of a hollow shaft on the side opposite to the leg 26 with respect to the bottom 22! / Moyo! /
- the method for manufacturing the carrier 20 of the planetary gear mechanism has been described.
- the method is not limited to the case of manufacturing the carrier 20 of the planetary gear mechanism, and the annular annular portion and the outer periphery of the annular portion are substantially perpendicular to each other.
- Any legged annular member in which at least one leg is formed may be applied to any legged annular member manufacturing method.
- the present invention can be used in the manufacturing industry of annular members with legs, such as a carrier of a planetary gear mechanism.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- General Details Of Gearings (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007533289A JPWO2007026756A1 (ja) | 2005-08-31 | 2006-08-30 | 環状部材の製造方法および脚付き環状部材 |
DE112006001748T DE112006001748T5 (de) | 2005-08-31 | 2006-08-30 | Verfahren zum Herstellen eines ringförmigen Elements und mit Zinken versehenes ringförmiges Element |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005251008 | 2005-08-31 | ||
JP2005-251008 | 2005-08-31 |
Publications (2)
Publication Number | Publication Date |
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WO2007026756A1 true WO2007026756A1 (ja) | 2007-03-08 |
WO2007026756A8 WO2007026756A8 (ja) | 2008-07-31 |
Family
ID=37808841
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/317094 WO2007026756A1 (ja) | 2005-08-31 | 2006-08-30 | 環状部材の製造方法および脚付き環状部材 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20070051156A1 (ja) |
JP (1) | JPWO2007026756A1 (ja) |
CN (1) | CN101232960A (ja) |
DE (1) | DE112006001748T5 (ja) |
WO (1) | WO2007026756A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008129892A1 (ja) * | 2007-04-13 | 2008-10-30 | Aisin Aw Co., Ltd. | 脚付き環状部材の製造方法および製造装置 |
JP2012122608A (ja) * | 2010-11-18 | 2012-06-28 | Jatco Ltd | キャリア及びその製造方法 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5383362B2 (ja) * | 2009-07-24 | 2014-01-08 | キヤノン株式会社 | 金属部材の製造方法 |
CH702276A1 (de) | 2009-11-30 | 2011-05-31 | Hatebur Umformmaschinen Ag | Verfahren zur Herstellung eines mit einem durchgehenden Loch versehenen Formteils. |
JP5039809B2 (ja) * | 2010-04-20 | 2012-10-03 | ジヤトコ株式会社 | キャリア及びその製造方法 |
CN102528388B (zh) * | 2010-11-18 | 2015-03-04 | 加特可株式会社 | 齿轮架及其制造方法 |
IN2014DE00219A (ja) * | 2014-01-24 | 2015-07-31 | Shivam Autotech Ltd | |
CN114888159A (zh) * | 2022-05-25 | 2022-08-12 | 江苏创一精锻有限公司 | 一种行星支架锻件的成形方法 |
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- 2006-08-30 JP JP2007533289A patent/JPWO2007026756A1/ja not_active Withdrawn
- 2006-08-30 US US11/512,089 patent/US20070051156A1/en not_active Abandoned
- 2006-08-30 CN CNA2006800279507A patent/CN101232960A/zh active Pending
- 2006-08-30 WO PCT/JP2006/317094 patent/WO2007026756A1/ja active Application Filing
- 2006-08-30 DE DE112006001748T patent/DE112006001748T5/de not_active Withdrawn
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JP2012122608A (ja) * | 2010-11-18 | 2012-06-28 | Jatco Ltd | キャリア及びその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
CN101232960A (zh) | 2008-07-30 |
DE112006001748T5 (de) | 2008-07-17 |
JPWO2007026756A1 (ja) | 2009-03-12 |
US20070051156A1 (en) | 2007-03-08 |
WO2007026756A8 (ja) | 2008-07-31 |
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