CN101232960A - Manufacturing method for an annular member and a pronged annular member - Google Patents

Manufacturing method for an annular member and a pronged annular member Download PDF

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Publication number
CN101232960A
CN101232960A CNA2006800279507A CN200680027950A CN101232960A CN 101232960 A CN101232960 A CN 101232960A CN A2006800279507 A CNA2006800279507 A CN A2006800279507A CN 200680027950 A CN200680027950 A CN 200680027950A CN 101232960 A CN101232960 A CN 101232960A
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CN
China
Prior art keywords
mentioned
endless member
connecting portion
workpiece component
shank
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Pending
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CNA2006800279507A
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Chinese (zh)
Inventor
安立毅彦
酒井聪司
中岛将木
酒卷弘
寺尾有喜
永井秀幸
高笠原靖之
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Aisin AW Co Ltd
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Aisin AW Co Ltd
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Publication date
Application filed by Aisin AW Co Ltd filed Critical Aisin AW Co Ltd
Publication of CN101232960A publication Critical patent/CN101232960A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/76—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

Abstract

Primary materials is processed with one punch to form a work member (20b) formed of a circular bottom part (22b) having, at its center, a hole (23b) and an inner wall part (24b) around the hole (23b) and a skirt-like outer wall part (25b) having leg parts (26b) on the outer periphery of the bottom part (22b) and connection parts (27b) connecting the leg parts (26b) to each other is formed by press-working, one time, a prepared rough material. The connection parts (27b) and the portion of the formed work member including the inner wall part (24b) are cut off from the formed work member (20b) to form the annular member with the legs having the circular bottom part (22b) with the hole (23b) and the leg parts (26b) on the outer periphery of the bottom part (22b).

Description

The manufacture method of endless member and band leg endless member
Technical field
The present invention relates to a kind of manufacture method and band leg endless member of endless member, specifically, the manufacture method and the band leg endless member that relate to the endless member of the band leg endless member that a kind of manufacturing is made of the annulus of ring-type and 1 leg roughly forming in the periphery of this annulus at least with meeting at right angles.
Background technology
Past as the manufacture method of this endless member, has proposed to utilize at normal temperatures punch process and bending machining, columned raw material is made the method for the planet carrier (carrier) that is used for planetary gears.In the method, utilize punch process, columned raw material are processed into by central part, from 4 shanks of the radial extension of this central part with connect discoid workpiece (work) parts that the connecting portion between this shank is formed, from this workpiece component, remove connecting portion then, with 4 shank bendings, 90 degree, form planet carrier.
Also have, manufacture method as this endless member, proposed to comprise by with discoideus blank (blank) (raw material) rearward extrusion molding, form the band pin components of forming by the bottom with along the different a plurality of shanks of the width (thickness) of the outer peripheral face of a side of bottom and the membranous part that between each shank, extends thick section bar thick section bar forming process and the central part in the membranous part of the thick section bar of thick section bar forming process shaping and bottom is carried out the manufacture method (for example, with reference to patent documentation 1) of the trimming operation of trimming (trimming).In this manufacture method, in thick section bar forming process, by extrusion molding rearward, make and width less than the thickness of the adjacent membranous part of the narrow and small shank of other shank thickness greater than the membranous part between other the shank, thereby promote that material flows to the narrow and small shank of width, so that the different shank of width has identical height.
[patent documentation 1] Japan Patent spy opens the 2001-105085 communique
In the manufacture method of above-mentioned the former's endless member, because after the punch process of the workpiece component that raw-material large plastometric set produces, need carry out processing with 4 leg curvature, 90 degree than macrobending, therefore between punch process and bending machining, need to anneal, thus increased raw-material from initial punch process to finishing the needed time of planet carrier.Also have, in the manufacture method of the above-mentioned latter's endless member, when extrusion molding rearward, material only occurs flowing in the peripheral direction of discoideus blank, therefore when extrusion molding rearward, need apply bigger load on discoideus blank.
Summary of the invention
One of purpose of the manufacture method of endless member of the present invention is to reduce from raw material to the manufacturing process that makes endless member.Also have, one of purpose of the manufacture method of endless member of the present invention is not anneal when raw material are made endless member.In addition, one of purpose of the manufacture method of endless member of the present invention is to shorten from raw material to making the required time of endless member.Required load when one of purpose of the manufacture method of endless member of the present invention is to reduce these raw material are carried out punch process.
The manufacture method of endless member of the present invention is to reach at least a portion of above-mentioned purpose, has adopted following means.
The manufacture method manufacturing of endless member of the present invention by the annulus of ring-type and at least 1 leg roughly forming in the periphery of this annulus with meeting at right angles and the band leg endless member that constitutes it is characterized in that,
(a) raw material of preparation ring-type,
(b) these raw material are carried out 1 punch process and form workpiece component, this workpiece component has the outside wall portions that has the skirt shape that the rounded bottom in hole and shank that is made of above-mentioned leg the periphery in this bottom and the connecting portion that is connected this shank form in central authorities,
(c) remove above-mentioned connecting portion from the workpiece component of this formation, form above-mentioned band leg endless member.
In the manufacture method of endless member of the present invention, carry out punch process 1 time for the raw material of being prepared, formation is by the porose rounded bottom of central authorities and the outside wall portions of the skirt shape of being made up of the shank of bottom periphery and the connecting portion that is connected with this shank, the workpiece component of being formed, remove connecting portion from the workpiece component of this formation, form band leg endless member.Therefore, do not need to carry out the bending machining of shank.Its result can reduce from the raw material of ring-type to the manufacturing process that makes endless member, can shorten simultaneously from raw material to making the required time of endless member.Also have, carry out punch process 1 time by raw material to ring-type, if be formed on the workpiece component that has along the medium pore place of bottom with the coaxial wall cylindraceous portion of outside wall portions, then can increase the flow direction of raw material (material), can reduce load (pressure) required when raw material are carried out punch process.
The manufacture method of this endless member of the present invention is characterised in that, can adopt cold-forging technique at least after above-mentioned operation (b).Like this, do not need heating, can shorten the required time of cooling.
Also have, the manufacture method of endless member of the present invention is characterised in that, can not anneal after above-mentioned operation (b) at least.Like this, can not anneal, make endless member from raw material.Its result, the refrigerating work procedure after can omitting annealing operation and annealing shortens from raw material to making the required time of endless member.
In addition, in the manufacture method of endless member of the present invention, also can allow above-mentioned operation (b) for forming the operation of above-mentioned workpiece component according to the external diameter of the above-mentioned connecting portion in the above-mentioned outside wall portions greater than the mode of the external diameter of above-mentioned shank, above-mentioned operation (c) is to comprise according to utilizing to the power of leg directive effect the above-mentioned connecting portion in the above-mentioned outside wall portions being cut the operation that the mode that falls is removed the operation of this connecting portion (c1) from above-mentioned shank.Like this, can easily remove connecting portion.At this moment, above-mentioned operation (b) also can for the internal diameter that makes the above-mentioned connecting portion in the above-mentioned outside wall portions greater than the internal diameter of above-mentioned shank, form the operation of above-mentioned workpiece component.Also have, above-mentioned operation (b) also can be for forming the operation of above-mentioned workpiece component greater than the mode of the internal diameter of above-mentioned shank according to the internal diameter of the above-mentioned connecting portion in the above-mentioned outside wall portions.In addition, above-mentioned operation (b) also can be the operation that forms workpiece component according to the roughly consistent mode of the internal diameter of the above-mentioned connecting portion in the above-mentioned outside wall portions and the external diameter of above-mentioned shank.And then above-mentioned operation (c1) also can be for removing above-mentioned connecting portion and reaming the operation of part in the hole of the bottom that comprises above-mentioned workpiece component.Like this, remove connecting portion respectively with utilization operation separately and compare, can reduce process number, can shorten from raw material to making the required time of endless member with the method for the part in the hole of the bottom that comprises workpiece component.
Perhaps, in the manufacture method of endless member of the present invention, also can allow above-mentioned operation (b) for according to the part in succession between above-mentioned shank and the above-mentioned connecting portion promptly in succession the thickness of portion form the operation of above-mentioned workpiece component less than the mode of the thickness of the thickness of this shank and this connecting portion.Like this, when comprising that in succession the part of portion (for example, to the connection root of the bottom of connecting portion and portion in succession) goes up active force when removing connecting portion, can reduce load required when removing connecting portion.
In the manufacture method of endless member of the present invention, also can allow above-mentioned operation (b) for form the operation of above-mentioned workpiece component less than the mode of the thickness of above-mentioned shank according to the thickness of above-mentioned connecting portion.Like this, the situation that is substantially equal to the thickness of shank with the thickness of connecting portion is compared, the raw-material amount that flow to the connecting portion side in the time of can reducing punch process.Its result can reduce the waste from raw material to the material of making endless member.Also have, also can allow above-mentioned operation (b) for according to the inboard of above-mentioned shank to the inboard of the connection root of above-mentioned bottom and above-mentioned connecting portion the root that is connected to above-mentioned bottom compare the operation that the mode with big radius and big thickness forms above-mentioned workpiece component.Like this, can improve the intensity of the connection root of shank, simultaneously when punch process causes plastic deformation, can be suppressed on the connection root of shank and produce slight crack.
Also have, in the manufacture method of endless member of the present invention, above-mentioned operation (c) can comprise remove connecting portion from the workpiece component of above-mentioned formation after, enlarge the operation (c2) of the internal diameter of above-mentioned shank, above-mentioned operation (c) can comprise remove connecting portion from the workpiece component of above-mentioned formation after, remove and the above-mentioned connecting portion of above-mentioned shank between the operation (c3) of burr of connecting portion.
In the manufacture method of endless member of the present invention, above-mentioned operation (c) can comprise remove connecting portion from the workpiece component of above-mentioned formation after, to the roughness of the medial surface at least of above-mentioned bottom and at least one operation of putting in order (c4) in the flatness.At this moment, also can allow above-mentioned operation (a) for being the raw-material operation after preparing phosphatization that the his-and-hers watches face carried out comprising the surface applied of metallic soap and handling, above-mentioned operation (c4) is for after implementing to remove the processing of above-mentioned metallic soap, to above-mentioned roughness and at least one operation of putting in order in the flatness.Thereby, can put in order the roughness and the flatness of the face of the inboard of bottom.
Also have, in the manufacture method of endless member of the present invention, above-mentioned operation (b) can have operation with the above-mentioned workpiece component of the coaxial wall cylindraceous portion of above-mentioned outside wall portions for forming along the medium pore of above-mentioned bottom.Like this, the raw-material flow direction in the time of can increasing by 1 punch process can reduce load required when raw material are carried out punch process.
Have in the manufacture method of endless member of the present invention of mode of workpiece component of this wall portion in formation, above-mentioned operation (b) can be for changing the thickness of above-mentioned connecting portion according to the distance of leaving above-mentioned shank by basis, thereby adjust to the mode of length of the end of above-mentioned wall portion, form the operation of above-mentioned workpiece component.Like this, can adjust to the length of the end of wall portion.At this moment, above-mentioned operation (b) also can be for big more according to the distance of leaving above-mentioned shank, and the mode of the level and smooth more increase of the thickness of above-mentioned connecting portion forms the operation of above-mentioned workpiece component.Also have, above-mentioned operation (b) also can form the operation of above-mentioned workpiece component for the mode that forms sleekly around this wall portion according to the end of above-mentioned wall portion.
In addition, have in the manufacture method of endless member of the present invention of mode of workpiece component of wall portion in formation, the mode that above-mentioned operation (b) can have the regulation shape for the inner peripheral surface according to above-mentioned wall portion forms the operation of above-mentioned workpiece component.At this moment, above-mentioned operation (b) forms the operation of above-mentioned workpiece component for the mode that is shaped as spline-shaped according to afore mentioned rules.Like this, can be so that raw material flow to wall portion side easily when punch process, can reduce load required when these raw material are carried out punch process.
In addition, have in the manufacture method of endless member of the present invention of mode of workpiece component of wall portion in formation, above-mentioned operation (b) can have the operation of the above-mentioned workpiece component of the above-mentioned wall portion that is made up of the hole of the hole of the central authorities of above-mentioned relatively bottom and the central authorities of unidirectional the 1st wall portion of above-mentioned outside wall portions and relative above-mentioned bottom and rightabout the 2nd wall portion of above-mentioned outside wall portions for formation.At this moment, above-mentioned operation (c) also can be included in to be removed from the workpiece component of above-mentioned formation after the above-mentioned connecting portion, removes the operation of the operation (c5) of above-mentioned the 1st wall portion from this workpiece component.。
In the manufacture method of endless member of the present invention, above-mentioned endless member can be the planet carrier in the planetary gears.In addition, as endless member, except this planet carrier, so long as the band leg endless member that is made of the annulus of ring-type and at least 1 leg roughly forming in the periphery of this annulus can be any parts with meeting at right angles.
Band leg endless member of the present invention is made of the annulus of ring-type and 1 leg that roughly forms in the periphery of this annulus at least with meeting at right angles, it is characterized in that,
Remove above-mentioned connecting portion from carry out workpiece component that 1 punch process forms by the raw material to ring-type, this workpiece component is included in the outside wall portions of the skirt shape that the porose rounded bottom of central authorities and shank that is made of above-mentioned leg the periphery in this bottom and the connecting portion that is connected this shank form.
This band leg endless member of the present invention forms for removing connecting portion the workpiece component of carrying out 1 punch process from the raw material to ring-type and forming, and above-mentioned workpiece component is included in the outside wall portions that central authorities have the skirt shape that the rounded bottom in hole and shank that is made of above-mentioned leg the periphery in this bottom and the connecting portion that is connected this shank form.Therefore, compare, can make band leg endless member, can shorten raw material from ring-type simultaneously to making the band leg required time of endless member from the raw material of ring-type with still less manufacturing process with the situation of the bending machining of carrying out shank.
In this band leg endless member of the present invention, above-mentioned workpiece component also can be formed greater than the external diameter of above-mentioned shank by the external diameter that makes the above-mentioned connecting portion in the above-mentioned outside wall portions, above-mentioned band leg endless member is cut the above-mentioned connecting portion in the above-mentioned outside wall portions fall from above-mentioned shank to the power of leg directive effect by utilizing, and forms to remove this connecting portion.At this moment, above-mentioned workpiece component also can be formed greater than the internal diameter of above-mentioned shank by the internal diameter that makes the above-mentioned connecting portion in the above-mentioned outside wall portions.Also have, above-mentioned workpiece component also can be roughly consistent with the external diameter of above-mentioned shank and form by the internal diameter that makes the above-mentioned connecting portion in the above-mentioned outside wall portions.
Also have, in the band leg endless member of the present invention, above-mentioned band leg endless member also can be by when removing above-mentioned connecting portion, ream the bottom that comprises above-mentioned workpiece component the hole part and form.Also have, above-mentioned workpiece component also can by make and above-mentioned shank and above-mentioned connecting portion between part in succession promptly in succession the thickness of portion form less than the thickness of the thickness of this shank and this connecting portion.
In addition, in band leg endless member of the present invention, above-mentioned workpiece component also can be formed less than the thickness of above-mentioned shank by the thickness that makes above-mentioned connecting portion.Also have, above-mentioned workpiece component also can be compared to the root that is connected of above-mentioned bottom with the inboard of above-mentioned connecting portion to the connection root of above-mentioned bottom by the inboard that makes above-mentioned shank, has big radius and big thickness and forms.
Perhaps, in band leg endless member of the present invention, above-mentioned band leg endless member also can be by after removing connecting portion from the above-mentioned workpiece component that forms, and enlarges the internal diameter of above-mentioned shank and form.Also have, above-mentioned band leg endless member also can be by after removing connecting portion from the above-mentioned workpiece component that forms, remove and the above-mentioned connecting portion of above-mentioned shank between connecting portion burr and form.
In band leg endless member of the present invention, above-mentioned band leg endless member also can be by after removing connecting portion from the above-mentioned workpiece component that forms, and the roughness of the medial surface at least of above-mentioned bottom and at least one in the flatness are put in order and formed.At this moment, the raw material of above-mentioned ring-type are the raw material of the phosphatization of the face coat that the surface carried out comprising metallic soap after handling, above-mentioned band leg endless member also can be by after the processing of implement removing above-mentioned metallic soap, and above-mentioned roughness and in the flatness at least one are put in order and formed.
Also have, in band leg endless member of the present invention, above-mentioned workpiece component can have the parts with the coaxial wall cylindraceous portion of above-mentioned outside wall portions for the medium pore along above-mentioned bottom.
Have in the manufacture method of band leg endless member of the present invention of mode of wall portion in this workpiece component, above-mentioned workpiece component can be by changing the thickness of above-mentioned connecting portion according to the distance that leave above-mentioned shank, thus adjust to above-mentioned wall portion the end length and form.At this moment, it is big more that above-mentioned workpiece component also can form the distance of leaving above-mentioned shank, the level and smooth more increase of the thickness of above-mentioned connecting portion.
Also have, have in the band leg endless member of the present invention of mode of wall portion in workpiece component, above-mentioned workpiece component can be by making the inner peripheral surface of above-mentioned wall portion have the regulation shape and forming.At this moment, above-mentioned workpiece component can be that spline-shaped forms by the inner peripheral surface of above-mentioned wall portion also.
And then, have in the band leg endless member of the present invention of mode of wall portion in workpiece component, above-mentioned workpiece component can form with the wall portion that the hole and rightabout the 2nd wall portion of above-mentioned outside wall portions of the central authorities of unidirectional the 1st wall portion of above-mentioned outside wall portions and relative above-mentioned bottom form by forming the hole that has by the central authorities of above-mentioned relatively bottom.At this moment, above-mentioned band leg endless member also can be by removing from the above-mentioned workpiece component that forms after the above-mentioned connecting portion, removes above-mentioned the 1st wall portion and form from this workpiece component.
In the band leg endless member of the present invention, above-mentioned band leg endless member can be the planet carrier in the planetary gears.
Description of drawings
Fig. 1 is the stereogram of the outward appearance of expression planet carrier 20.
Fig. 2 is an AA view of observing the planet carrier 20 of Fig. 1 from the A-A face.
Fig. 3 is the process chart of an example of the situation of expression manufacturing planet carrier 20.
Fig. 4 is the stereogram of the outward appearance of expression raw material 20a.
Fig. 5 is the stereogram of the outward appearance of expression workpiece component 20b.
Fig. 6 is an AA view of observing the workpiece component 20b of Fig. 5 from the A-A face.
Fig. 7 is a BB view of observing the workpiece component 20b of Fig. 5 from the B-B face.
Fig. 8 is the sectional view of processing unit (plant) 40.
Fig. 9 is an AA view of observing the processing unit (plant) 40 of Fig. 8 from the A-A face.
Figure 10 is a BB view of observing the processing unit (plant) 40 of Fig. 8 from the B-B face.
Figure 11 is the sectional view of the processing unit (plant) 40 when raw material 20a forms workpiece component 20b.
Figure 12 is the sectional view in E-E cross section of the processing unit (plant) 40 of Figure 11.
Figure 13 is the stereogram of the outward appearance of expression band leg endless member 20c.
Figure 14 is an AA view of observing the workpiece component 20c of Figure 13 from the A-A face.
Figure 15 is a BB view of observing the workpiece component 20c of Figure 13 from the B-B face.
Figure 16 is the sectional view of clipping apparatus 60.
Figure 17 is an AA view of observing the clipping apparatus 60 of Figure 16 from the A-A face.
Figure 18 is the BB view of the BB face of the clipping apparatus 60 of expression Figure 16.
Figure 19 utilizes the key diagram of the situation of clipping apparatus 60 when workpiece component 20b reams the part that comprises connecting portion 27 and inner wall part 24 for expression.
Figure 20 is the sectional view in E-E cross section of the clipping apparatus 60 of Figure 19.
The key diagram of the situation when Figure 21 enlarges the internal diameter of shank 26c of band leg endless member 20c for expression.
The key diagram of the situation when Figure 22 removes the burr of being with leg endless member 20c for expression.
The key diagram of the situation when Figure 23 carries out shaping (coining) for expression to band leg endless member 20c.
Figure 24 is the process chart of an example of the situation of the planet carrier 20 of expression manufacturing variation.
Figure 25 has the stereogram of outward appearance of the band leg endless member 20d of inner wall part for expression.
Figure 26 is the key diagram of the example of the downside 50b of the processing unit (plant) 40B of expression variation.
Figure 27 is the stereogram of the outward appearance of expression workpiece component 120b.
Figure 28 is an AA view of observing the workpiece component 120b of Figure 27 from the A-A face.
Figure 29 is a BB view of observing the workpiece component 120b of Figure 27 from the B-B face.
Figure 30 is the stereogram of the outward appearance of expression workpiece component 220b.
Figure 31 is an AA view of observing the workpiece component 220b of Figure 30 from the A-A face.
Figure 32 is a BB view of observing the workpiece component 220b of Figure 30 from the B-B face.
Form of implementation
Utilize embodiment below, illustrate and implement best mode of the present invention.
Fig. 1 utilizes the stereogram of the outward appearance of the planet carrier 20 that the manufacture method of the endless member of one embodiment of the present of invention makes for expression.Fig. 2 is an AA view of observing the planet carrier 20 of Fig. 1 from the A-A face.As depicted in figs. 1 and 2, wheel hub (boss) portion 28 formations of utilizing shank 26 that planet carrier 20 that the manufacture method of embodiment makes is made up of the bottom 22 of the ring-type that forms hole 23 in central authorities, 22 one-tenth approximate right angle of periphery and bottom of 22 form in the bottom 4 legs and forming as quill shaft with respect to the opposition side at shank 26 of bottom 22.
The manufacture process of the planet carrier 20 of this embodiment is as follows.Fig. 3 is the process chart of the situation of the planet carrier 20 of expression manufacturing embodiment.When making planet carrier 20, at first as shown in Figure 4, from the operation (operation S100) of the raw material 20a for preparing ring-type.Raw material 20a forms the endless member with internal diameter R1 and external diameter R2 as shown in Figure 4.Specifically, following such manufacturing of raw material 20a, promptly prepare can cold forging material (for example, mild steel, low-carbon alloy steel, aluminium, aluminium alloy, copper, copper alloy etc.) bar (operation S110), the bar of being prepared is carried out forge hot or warm forging, cold forging, form the porose endless member (operation S120) of central authorities, formed endless member is softened processing (operation S130), carry out bead (shot blasting) simultaneously, oxide skin (scales) (operation S140) with the surface of removing endless member, carry out the cutting of C face cutting (tangent plane) and width, repair (operation S150 with shape to endless member, S160), carry out phosphatization (phosphating) and handle (operation S170).Here, it is in order to reduce the frictional resistance of processing unit (plant) and raw material 20a when the punch process described later that phosphatization is handled, generate chemical films (for example, phosphate layer etc.) on the surface of endless member, utilize metallic soap etc. that the coating processing is carried out on the surface of generation chemical films simultaneously.In addition, the preparatory process of raw material 20a is not a core of the present invention, therefore omits further to describe in detail.
As above like that all set behind the raw material 20a, then ready ring-type raw material 20a is carried out punch process 1 time, form as Fig. 5 workpiece component 20b (operation S200) shown in Figure 7 extremely.Fig. 5 is the stereogram of the outward appearance of expression workpiece component 20b.Fig. 6 is an AA view of observing the workpiece component 20b of Fig. 5 from the A-A face.Fig. 7 is the sectional view in B-B cross section of the workpiece component 20b of presentation graphs 5.To shown in Figure 7, workpiece component 20b has rounded bottom 22b, outside wall portions 25b and wheel hub 28b as Fig. 5.The external diameter of rounded bottom 22b is R6, and the hole 23b and the internal diameter around the 23b of hole that have diameter R3 in central authorities are that R3 and external diameter are the inner wall part 24b roughly cylindraceous of R4.Outside wall portions 25b by the shank 26b of internal diameter R5 that becomes approximate right angle to form with respect to the periphery of bottom 22b and bottom 22b inner wall part 24b homonymy and bottom 22b and external diameter R6 be connected with shank 26b with the side of bottom 22b and have be substantially equal to bottom the internal diameter R7 of external diameter R6 of 22b and the connecting portion 27b that external diameter is R8 form.Wheel hub 28b with respect to bottom 22b form the cylindric of quill shaft with outside wall portions 25b opposition side, have the internal diameter R9 of the internal diameter R3 that is a bit larger tham inner wall part 24b and less than the external diameter R10 of the external diameter R6 of bottom 22b.Here, the thickness D1 of shank 26b ((R6-R5)/2) is greater than the thickness D2 ((R8-R7)/2) (thickness thickening) of connecting portion 27b.Also have, in an embodiment, the shank 26b among the outside wall portions 25b is called the 29b of portion in succession with (link) the in succession part that is connected (connect) 27b of portion.This in succession the thickness D4 of the 29b of portion less than the thickness D1 of shank 26b and the thickness D2 of connecting portion 27b.In an embodiment, the operation that forms workpiece component 20b adopts processing unit (plant) 40 shown in Figure 8 to carry out.Fig. 8 is the sectional view of processing unit (plant) 40.Fig. 9 is an AA view of observing the processing unit (plant) 40 of Fig. 8 from the A-A face.Figure 10 is a BB view of observing the processing unit (plant) 40 of Fig. 8 from the B-B face.In addition, the cross section of the processing unit (plant) 40 of Fig. 8 is equivalent to the D-D cross section of the processing unit (plant) 40 of the C-C cross section of processing unit (plant) 40 of Fig. 9 and Figure 10.Processing unit (plant) 40 is formed by the patrix (upper die) 41 that is configured in the top in the processing unit (plant) 40 with respect to the counterdie (lower die) 50 that patrix 41 is configured in coaxial below.Patrix 41 comprises patrix axle (mandrel) 42 and mo(u)ld top half drift 43 (with reference to Fig. 9).Patrix axle 42 forms cylindric, is configured in the central lower in the patrix 41, and its external diameter R11 is substantially equal to the external diameter R4 of the inner wall part 24b of workpiece component 20b less than the internal diameter R1 of raw material 20a.Patrix drift 43 forms according to inner peripheral surface and forms quill shaft with the mode that the round outer peripheral face of the external diameter R13 of patrix axle 42 contacts, and the bottom of outer peripheral face is the shape that the part of the circle of the part of circle of external diameter R12 and external diameter R13 alternately forms, wherein external diameter R2 is substantially equal to the internal diameter R5 of the shank 26b of workpiece component 20b, and external diameter R13 is substantially equal to the internal diameter R7 of connecting portion 27b.Counterdie 50 comprises spindle 51, mo(u)ld bottom half drift the 52, the 1st punch die 53 and the 2nd punch die 54 down.Following spindle 51 is configured in the central upper in the counterdie 50, the upper end forms the circle of external diameter R14, and from the position of the length L 1 of leaving the upper end, the external diameter stage that forms downwards increases to the external diameter R17 of the internal diameter R9 of the hub portion 28b that is substantially equal to workpiece component 20b, wherein external diameter R14 is substantially equal to external diameter (internal diameter of the inner wall part 24b) R3 of the hole 23b of workpiece component 20b.Mo(u)ld bottom half drift 52 is formed the quill shaft of internal diameter R17, and forms overall diameter R10 cylindric that external diameter R18 is substantially equal to the hub portion 28b of workpiece component 20b, and is used for mounting raw material 20a.The 1st punch die 53 (with reference to Figure 10), inner circumferential surface forms quill shaft according to the mode that the outer peripheral face with mo(u)ld bottom half drift 52 contacts, and periphery is substantially equal to the shape that the part of the circle of the part of circle of external diameter R6 of bottom 22b of workpiece component 20b and the external diameter R8 that external diameter R16 is substantially equal to connecting portion 27b forms alternately for external diameter R15.The mode that the inner peripheral surface of the 2nd punch die 54 contacts according to the outer peripheral face with the 1st punch die 53 forms the cylindric of quill shaft.Here, mo(u)ld bottom half drift 52 can move along the vertical direction.Also have, the upper end of the 1st punch die 53 is in the position of hanging down length L 2 than the upper end of the 2nd punch die 54, the part that forms external diameter R15 in its periphery disposes in opposite directions with the part of the external diameter R12 that forms patrix drift 43, and the part that forms external diameter R16 disposes in opposite directions with the part of the external diameter R13 that forms patrix drift 43.
The key diagram of the situation when Figure 11 utilizes processing unit (plant) 40 to form workpiece component 20b for explanation.Figure 12 is the sectional view in E-E cross section of the processing unit (plant) 40 of Figure 11.Here, the sectional view of the processing unit (plant) 40 of the right upper portion of Figure 11 is equivalent to the figure in the processing unit (plant) F-F cross section of Figure 12.The cross section of the processing unit (plant) 40 of the lower right side of Figure 11 is that further expansion the in cross section of the processing unit (plant) 40 of right upper portion forms.When raw material 20a forms workpiece component 20b,, make it coaxial with following spindle 51 at first at the raw material 20a of the top mounting ring-type of the upper end of mo(u)ld bottom half drift 52.Under this state, patrix 41 is descended.At this moment, behind patrix drift 43 and the raw material 20a butt, Yi Bian press down raw material 20a and mo(u)ld bottom half drift 52, Yi Bian continue to move down patrix drift 43.When the butt of the upper end of the bottom of patrix axle 42 and following spindle 51, stop to move down.Then,, make patrix 41 declines on one side Yi Bian make raw material 20a distortion, until the upper end of mo(u)ld bottom half drift 43 in the assigned position of the upper end that is lower than the 1st punch die 53.When patrix 41 stopped to descend, raw material 20a was by patrix drift 43, down spindle 51, mo(u)ld bottom half drift the 52, the 1st punch die 53 and the 2nd punch die 54 form the shape as the workpiece component 20b of Fig. 5-shown in Figure 7.Here, as mentioned above, because the thickness D1 of the shank 26b of the outside wall portions 25b of workpiece component 20b is greater than the thickness D2 of connecting portion 27b, therefore can guarantee the intensity of shank 26b to the connection root of bottom 22b, when plastic deformation, can be suppressed at shank 26b produces the workpiece component 20b that slight crack caused on the connection root of bottom 22b breakage simultaneously.And the thickness D1 by making shank 26b is greater than the thickness D2 of connecting portion 27b, thereby compares with the roughly the same situation of thickness D1 and thickness D2, in the time of can reducing punch process in the raw-material amount of connecting portion 27b side flow.As described later, owing to will ream this connecting portion 27b,, can reduce the waste of material by reducing raw-material amount in connecting portion 27b side flow.Also have, when utilizing this processing unit (plant) 40 to form workpiece component 20b, except the outside wall portions 25b that utilizes mo(u)ld top half drift 42 and the 2nd punch die 54 to form, utilize outside the hub portion 28b that spindle 51, mo(u)ld bottom half drift 52 and the 1st punch die 53 form down, also utilize spindle 51 and patrix drift 43 formation inner wall part 24b roughly cylindraceous down, therefore when punch process, can increase the flow direction of raw material 20a, can reduce from raw material 20a and form the needed pressure of workpiece component 20b.Like this, can utilize the cold forging method to form workpiece component 20b from raw material 20a.Its result does not need to heat according to the mode of carrying out forge hot, thereby can shorten the required time of cooling.Also have, compare,, thereby can carry out plastic deformation accurately because variations in temperature is little with carrying out forge hot.In addition, when utilizing processing unit (plant) 40 to form workpiece component 20b, the height L3 sum (height of connecting portion 27b) of the thickness D3 of the bottom 22b of workpiece component 20b and shank 26b is less than the length L 2 of the upper end of the upper end of the 1st punch die 53 and the 2nd punch die 54.
After forming workpiece component 20b like this, ream connecting portion 27b from formed workpiece component 20b, form Figure 13 to band leg endless member 20c (operation S310) shown in Figure 15, to the formed band leg endless member 20c processing (operation S320-operation S350) of completing, finish above-mentioned planet carrier 20 simultaneously.Figure 13 is the stereogram of the outward appearance of expression band leg endless member 20c.Figure 14 is an AA view of observing the band leg endless member 20c of Figure 13 from the A-A face.Figure 15 is a sectional view of observing the band leg endless member 20c of Figure 13 from the B-B face.As Figure 13-shown in Figure 15, band leg endless member 20c is made of rounded bottom 22, shank 26c and hub portion 28c.The external diameter of rounded bottom 22 is R6, has the hole 23c of external diameter R4 that external diameter R19 is a bit larger tham the inner wall part 24b of workpiece component 20b in central authorities.The internal diameter R5 that shank 26c is formed by 22 one-tenth approximate right angle of periphery and bottom of 22 in the bottom and 4 legs of external diameter R6 are formed.Hub portion 28c forms quill shaft cylindric of internal diameter R19 and external diameter R10 with respect to the opposition side at shank 26c of bottom 22c.
In an embodiment, utilize clipping apparatus 60 to form this band leg endless member 20c.Figure 16 is the sectional view of clipping apparatus 60.Figure 17 is an AA view of observing the clipping apparatus 60 of Figure 16 from the A-A face.Figure 18 is a BB view of observing the clipping apparatus 60 of Figure 16 from the B-B face.Also have, the cross section of the clipping apparatus 60 of Figure 16 is equivalent to the D-D cross section of the clipping apparatus 60 of the C-C cross section of clipping apparatus 60 of Figure 17 and Figure 18.As shown in the figure, clipping apparatus 60 is formed by the patrix 61 that is configured in the top in the clipping apparatus 60 with respect to the counterdie 65 that patrix 61 is configured in coaxial below.Patrix 61 is made up of mo(u)ld top half drift 62 grades (with reference to Figure 17), mo(u)ld top half drift 62 is configured in the central lower in the patrix 61, its form concavity the bottom form the circle of external diameter R19 that its internal diameter R20 is a bit larger tham the hole 23c of band leg endless member 20c interior week, and peripheral shape become the part of circle of internal diameter R5 that external diameter R21 is substantially equal to the shank 26c of band leg endless member 20c be substantially equal to external diameter R22 bottom the shape that alternately forms of the part of circle of external diameter R6 (the internal diameter R7 of the connecting portion 27b of workpiece component 20b) of 22c.Counterdie 65 is made up of axle 66, mo(u)ld bottom half drift 67 and punch die 68 etc.Axle 66 is configured in the central upper in the counterdie 65, forms external diameter R19 cylindric that external diameter R23 is substantially equal to the hole 23c of band leg endless member 20c.The inner peripheral surface of mo(u)ld bottom half drift 67 contacts with the outer peripheral face of axle 66, and periphery is substantially equal to the shape that a part and the part that external diameter R25 is a bit larger tham the circle of external diameter R24 of circle of external diameter R6 of the bottom 22c of band leg endless member 20c alternately forms for external diameter R24, the shape that upper end formation can mounting workpiece component 20b.The mode that the inner peripheral surface of punch die 68 contacts according to the outer peripheral face with mo(u)ld bottom half drift 67 forms the cylindric of quill shaft.Here, mo(u)ld bottom half drift 67 can move along the vertical direction, the part that forms external diameter R24 in its periphery disposes in opposite directions with the part of the external diameter R21 that forms mo(u)ld top half drift 62, and the part that forms external diameter R25 disposes in opposite directions with the part of the external diameter R22 that forms mo(u)ld top half drift 62.Also have, punch die 68 is provided with the rake that periphery tilts in the upper end of the part that the is formed at internal diameter R25 radius vector direction outside.Figure 19 utilizes the key diagram of the situation of clipping apparatus 60 when workpiece component 20b reams the part that comprises connecting portion 27 and inner wall part 24 for expression.Figure 20 is the sectional view in E-E cross section of enlarged drawing of the clipping apparatus 60 of Figure 19.In addition, the cross section of the clipping apparatus 60 of Figure 19 is equivalent to the F-F cross section of Figure 20.When reaming the part that comprises connecting portion 27b and inner wall part 24b from workpiece component 20b, at first, top mounting workpiece component 20b in the upper end of mo(u)ld bottom half drift 67, make it coaxial with axle 66, and the part that makes the shank 26b of workpiece component 20b and form at the external diameter R24 place of mo(u)ld bottom half drift 67 disposes in opposite directions, and connecting portion 27b and the part that forms at the external diameter R25 place of mo(u)ld bottom half drift 67 dispose in opposite directions.Under this state, patrix 61 is descended.At this moment, behind the bottom 22b butt of mo(u)ld top half drift 62 and workpiece component 20b, press down workpiece component 20b and mo(u)ld bottom half drift 67, continue to make patrix 61 to descend.When patrix 61 further descends, as Figure 19 and shown in Figure 20, the shear strength that the outside of the upper end of the inboard of the bottom of mo(u)ld top half drift 62 and axle 66 produces will comprise that the part of the inner wall part 24 of workpiece component 20b reams, the shear strength of the part generation that the part that the external diameter R22 place in the outside of the bottom of mo(u)ld top half drift 62 forms and the external diameter R25 place of the inboard of the upper end of punch die 67 form act on connecting portion 27b to bottom 22b be connected root and in succession above the 29b of portion, 27b reams with connecting portion.Promptly, under the state of bottom 22b and mo(u)ld top half drift 62 butts, utilize mo(u)ld top half drift 62 to press down workpiece component 20b on one side, hub portion 28b side from workpiece component 20b will comprise that the part of inner wall part 24b reams on one side, and from hub portion 28b side (the connection root side to bottom 22b of connecting portion 26b) connecting portion 27b be reamed.Like this, by reaming connecting portion 27b, can easily ream connecting portion 27b.Here, when when workpiece component 20b reams connecting portion 27b, as previously mentioned, because the thickness D1 of the shank 26b of workpiece component 20b is greater than the thickness D2 of connecting portion 27b, therefore can be suppressed at shank 26b produces slight crack on the connection root of bottom 22b.Also have, among the workpiece component 20b, because the thickness D4 of the 29b of portion is less than the thickness D1 of shank 26b and the thickness D2 of connecting portion 27b in succession, the situation that is substantially equal to the thickness D2 of the thickness D1 of shank 26b and connecting portion 27b with the thickness D4 of the 29b of portion is in succession compared, and can reduce to ream the required load of connecting portion 27b (pressure) from workpiece component 20b.Like this, form shank 26c that 4 legs becoming approximate right angle to form with bottom 22c by the rounded bottom 22c that has hole 23c in central authorities, by the periphery at bottom 22c form and band leg endless member 20c that the hub portion 28c cylindraceous of the quill shaft that forms with respect to the opposition side at shank 26c of bottom 22c constitutes.
The completion of band leg endless member 20c is handled (operation S320-S350) and is comprised specifically: as shown in figure 21 with shank 26c (direction of arrow among the figure) expansion laterally, with the processing (operation S320) of the internal diameter of the shank 26c that enlarges formed band leg endless member 20c; The processing (operation S330) of when forming band leg endless member 20c, to the cross section after reaming connecting portion 27b (cross section of shank 26c), removing burr as shown in figure 22; The processing (operation S340) of the metallic soap of removal after the surface applied of band leg endless member 20c; The shaping (coining) that the surface (oblique line part) to the bottom 22c of band leg endless member 20c is as shown in figure 23 smoothly put in order is handled (operation S350) and is formed.
Like this, the manufacture method of the planet carrier 20 of embodiment is simply described as follows.By the raw material 20a that is prepared being carried out the plastic deformation that 1 time punch process produces, form workpiece component 20b, the outside wall portions 25b of the skirt shape that this workpiece component 20b forms by the rounded bottom 22b that has hole 23b in central authorities, at the shank 26b and the connecting portion 27b that is connected with this shank 26b of the periphery of bottom 22b forms, from formed workpiece component 20b connecting portion 27b is cut, form planet carrier 20.From above-mentioned operation as can be known, from raw material 20a to the operation of finishing planet carrier 20 because plastic deformation has only the punch process of 1 operation S200, thereby do not need to carry out annealing in process for later plastic working.Promptly do not need to anneal to finishing planet carrier 20 operation before from raw material.So, can shorten the required time of refrigerating work procedure after carrying out annealing operation and annealing, minimizing, is shortened from raw material 20a to making the 20 needed times of planet carrier to the process number of making planet carrier 20 simultaneously from raw material 20a.
Manufacture method according to the planet carrier 20 of the embodiment of above explanation, raw material 20a to the ring-type prepared carries out punch process 1 time, form workpiece component 20b, this workpiece component 20b is by the rounded bottom 22b of the porose 23b of central authorities, be made up of with the connecting portion 27b that is connected with this shank 26b the shank 26b in the periphery of bottom 22b, from formed workpiece component 20b connecting portion 27b is cut, finish planet carrier 20, therefore from raw material 20a to the operation of finishing planet carrier 20, do not need to anneal.Its result can reduce from raw material 20a to the process number of finishing planet carrier 20, shortens simultaneously from raw material 20a to the time of finishing planet carrier 20.Also have,, owing to utilize the cold forging method to form workpiece component 20b, do not need raw material 20a is heated or formed workpiece component 20b is cooled off the needed time from raw material 20a according to the manufacture method of the planet carrier 20 of embodiment.Its result can further shorten from raw material 20a to the time of finishing planet carrier 20.
In the manufacture method of the planet carrier 20 of embodiment, will comprise that from formed workpiece component 20b the part of connecting portion 27b and inner wall part 24b cuts the operation that falls and carry out simultaneously, but also can not carry out simultaneously.The manufacture method of the planet carrier 20 of this moment one for example shown in Figure 24.In the manufacture method of the planet carrier 20 of Figure 24, replace operation S300 in the manufacturing process of Fig. 3 except utilizing operation S400, all the other are identical with the manufacture method of the planet carrier 20 of Fig. 3.In the manufacture method of this planet carrier 20, ream connecting portion 27b from formed workpiece component 20b, form band leg endless member 20d (operation S410) as shown in figure 25 with inner wall part 24b, enlarge the internal diameter (operation S420) of the shank 26d of formed band leg endless member 20d with inner wall part then, when formation has the band leg endless member 20d of inner wall part, pair cross-section (cross section of bottom 22d) is removed burr and is handled (operation S425), burr is removed in the side of the shank 26d of band leg endless member 20d with inner wall part handle (operation S430), the processing (operation S440) of the metallic soap of removal after the surface applied of the band leg endless member 20d with inner wall part, to comprise that from band leg endless member 20d the part of inner wall part 24d reams with inner wall part, form above-mentioned Figure 13-band leg endless member 20c (operation S445) shown in Figure 15, the roughness on the surface of bottom 22c and the shaping that flatness is put in order are handled (operation S450), finish planet carrier 20.In the manufacture method of the planet carrier 20 of this variation, equally also the raw material 20a to the ring-type prepared carries out punch process 1 time, finish workpiece component 20b, therefore the manufacture method with the planet carrier 20 of embodiment is the same, does not need to anneal from raw material 20a to the operation of finishing planet carrier 20.Its result can reduce from raw material 20a to the process number of making planet carrier 20, shortens simultaneously from raw material 20a to the time of making planet carrier 20.Also have, the same with the manufacture method of the planet carrier 20 of embodiment, owing to utilize the cold forging method to form workpiece component 20b, do not need the time that raw material 20a is heated or formed workpiece component 20b is cooled off from raw material 20a.Its result can further shorten from raw material 20a to the time of finishing planet carrier 20.
In the manufacture method of the planet carrier 20 of embodiment, will comprise that from workpiece component 20b the part of connecting portion 27b and inner wall part 24b cuts, but also can only ream connecting portion 27b, and not ream the part that comprises inner wall part 24b.
In the manufacture method of the planet carrier 20 of embodiment, when forming workpiece component 20b by 1 punch process, as above-mentioned Fig. 5-shown in Figure 7, the inner peripheral surface that forms inner wall part 24b and hub portion 28 is the workpiece component 20b of smooth surface, but the inner peripheral surface that also can form inner wall part 24b and hub portion 28b is the workpiece component 20b of regulation shape (for example, spline (spline) shape or zigzag etc.).Figure 26 represents the example of the counterdie 50b of the processing unit (plant) 40B that the inner peripheral surface of inner wall part 24b is adopted when being spline-shaped.Figure 27-Figure 29 represents to utilize the example of the workpiece component 120b that this processing unit (plant) 40B forms.In Figure 26, for the following spindle 51b of the counterdie 50b of processing unit (plant) 40B, above-mentioned following spindle 51 (with reference to Fig. 8) changed to spline-shaped from the upper end to the shape of the position of its below length L 1 (shape of employed part during the formation of the inner wall part 24b of the workpiece component 20b the following spindle 51).In addition, processing unit (plant) 40B is except the shape difference of following spindle 51b, and is identical with above-mentioned processing unit (plant) 40.Also have, Figure 27 is the stereogram of the outward appearance of the workpiece component 120b of expression variation.Figure 28 is an AA view of observing the workpiece component 120b of Figure 27 from the A-A face.Figure 29 is a BB view of observing the workpiece component 120b of Figure 27 from the B-B face.In Figure 27-Figure 29, except the inner peripheral surface of inner wall part 124b is the spline-shaped, with the workpiece component 20b of Fig. 5-Fig. 7 be same shape, the part that therefore forms same shape adopts prosign.The processing unit (plant) 40B that has this spindle 5 1b down by utilization forms workpiece component 120b, thereby when utilizing punch process to form inner wall part 124b, can relax the air-tight state of raw material 20a of interior all sides of inner wall part 124b, thereby can reduce load required when carrying out punch process so that raw material 20a flow to inner wall part 124b side easily.And, when carrying out 1 punch process like this, form spline-shaped by the inner peripheral surface that makes inner wall part 124b, when needing in the process of making planet carrier 20 to make the inner peripheral surface formation spline-shaped of inner wall part 24, the inner peripheral surface that makes inner wall part 24b no longer need be set after punch process form the operation of spline-shaped, thereby can shorten from raw material 20a to the time of finishing planet carrier 20.In this variation, make the inner peripheral surface of inner wall part 124b form spline-shaped, but be not limited to spline-shaped, as long as when carrying out punch process, can relax the air-tight state of raw material 20a of interior all sides of inner wall part 24b (124b), can make raw material 20a flow into inner wall part 24b side easily, then can have any shape, for example also can make the inner peripheral surface of inner wall part 24b form concaveconvex shape etc.
In the manufacture method of the planet carrier 20 of embodiment, the operation of preparing behind the raw material 20a is a cold forging, but is not limited to cold forging, also can carry out warm forging or forge hot.
In the manufacture method of the planet carrier 20 of embodiment, prepare the not annealing of operation behind the raw material 20a, but also can anneal.
In the manufacture method of the planet carrier 20 of embodiment, the thickness D1 of the shank 26b of workpiece component 20b forms outside wall portions 25b greater than the thickness D2 of connecting portion 27b.But the thickness D1 that also can make shank 26b is substantially equal to the thickness D2 of connecting portion 27b, forms outside wall portions 25b.Or the thickness D1 that also can make shank 26b is slightly smaller than the thickness D2 of connecting portion 27b, formation outside wall portions 25.
In the manufacture method of the planet carrier 20 of embodiment, when forming workpiece component 20b, roughly even along the thickness D2 of the connecting portion 27b in interior week of connecting portion 27b.But also can be when forming workpiece component 20b, along with the increase of the distance of leaving shank 26b, promptly along the interior week of connecting portion 27b, the closer to the center side of connecting portion 27b, the thickness of connecting portion 27b is big more.Figure 30 is the stereogram of the outward appearance of the workpiece component 220b of expression formation this moment.Figure 31 is an AA view of observing the workpiece component 220b of Figure 30 from the A-A face.Figure 32 is a BB view of observing the workpiece component 220b of Figure 30 from the B-B face.Among Figure 31, " D21 " is the thickness of thickness D2 ((R8-R7)/2) of the connecting portion 27b of the workpiece component 20b that is equivalent to embodiment, and " D22 " is the thickness greater than D21.In Figure 30-Figure 32, except the shape of the shape (thickness) of connecting portion 227b and the end of inner wall part 224b is different, with the workpiece component 20b of Fig. 5-Fig. 7 be same shape, therefore the part that forms same shape is adopted prosign.Now, consider to utilize punch process to form the situation of workpiece component 20b or workpiece component 220b.At this moment, in an embodiment, as described in above-mentioned Figure 11, utilize patrix drift 43 and the 2nd punch die 54, the outside wall portions 25b that formation is made up of shank 26b and connecting portion 227b, utilize spindle 51, mo(u)ld bottom half drift 52 and the 1st punch die 53 formation hub portion 28b down, spindle 51 and mo(u)ld top half drift 43 form inner wall part 24b under utilizing.At this moment, owing to dispose mo(u)ld bottom half drift 52 in the end (bottom of hub portion 28b among Fig. 7) of hub portion 28b side, thereby utilize mo(u)ld bottom half drift 52 to limit extension to this end side, the length of end from bottom 22b to hub portion 28b along the circumference of hub portion 28b for roughly certain.But, because the end of inner wall part 24b is (among Fig. 7, the upper end of inner wall part 24b) side is free shape, therefore do not limit extension to end side, flowability according to raw material 20a, the length of the end from bottom 22b to inner wall part 24b is unfixing along the circumference of inner wall part 24b, can occur wavy in the end of inner wall part 24b sometimes.In general, because the thickness of outside wall portions 25b is thick more, the easy more inflow inner wall part of raw material 20a 24b side, promptly, as embodiment, if the thickness D1 of shank 26a is greater than the thickness D2 of connecting portion 27b and along the thickness of the shank 26b of the periphery of bottom 22b and connecting portion 27b roughly evenly the time, because in inner wall part 28, with compare with connecting portion 27b position in opposite directions, raw material 20a is easier to flow to the position in opposite directions with shank 26b, therefore in inner wall part 28, from with the bottom 22b of shank 26b position in opposite directions to the length of end be easy to greater than from the bottom 22b of connecting portion 27b position in opposite directions length to the end, occur wavy easily in the end of inner wall part 24b.Especially in inner wall part 24b along interior week (periphery of bottom 22b) of connecting portion 27b, with position in opposite directions, the substantial middle place of connecting portion 27b, the distance of leaving shank 26b becomes big, and raw material 20a is difficult to flow, and therefore the length of the end from bottom 22b to inner wall part 24b shortens easily.Corresponding therewith, shown in Figure 30-32, if the connecting portion 227b that forms, make that the distance of leaving shank 22b is big more, promptly the end side along interior week of connecting portion 227b from connecting portion 227b is to center side, thickness is thickness D22 from the D21 thickening, the 2nd punch die 54 that then promptly replaces processing unit (plant) 40, form this connecting portion 227b and adopt the processing unit (plant) of not representing among the figure with the 2nd punch die of not representing among the figure to carry out punch process, since raw material 20a also flow to easily among the inner wall part 224b with connecting portion 227b position in opposite directions, therefore can suppress the deviation of the flowability of raw material 20a.Like this, can suppress the circumference appearance significantly change of the length of the end from bottom 22b to inner wall part 224b along inner wall part 224b, the end that can be suppressed at inner wall part 224b occurs wavy.In this variation, when forming connecting portion 227b, by making end side to center side along interior week of connecting portion 227b from connecting portion 227b, thickness becomes thickness D22 and increase gradually from D21, the end that can be suppressed at inner wall part 224b occurs wavy, but be not limited thereto, by the thickness according to the distance change connecting portion 27b (227b) that leaves shank 26b, thereby the length of regulating the end from bottom 22b to inner wall part 24b (224b) gets final product.
In the manufacture method of the planet carrier 20 of embodiment, when utilizing processing unit (plant) 40 to form workpiece component 20b, adopt mo(u)ld bottom half drift 52, the length of the end of restriction from bottom 22b to hub portion 28b, but as replacing or appending, also can adopt the parts of restriction, the length of the end of restriction from bottom 22b to inner wall part 24b to the extension of the end side of inner wall part 24b.Also have, also can the length of the length of the end from bottom 22b to hub portion 28b and the end from bottom 22b to inner wall part 24b all not limited.The following describes replacement mo(u)ld bottom half drift 52, employing limits the situation when the parts of the extension of the end side of inner wall part 24b.At this moment, the situation of extending to the end side of inner wall part 24b with raw material 20a is opposite, because the thickness of outside wall portions 25b is thin more, the easy more hub portion 28b side that flow to of raw material 20a, promptly as embodiment, if the thickness D1 of shank 26b is greater than the thickness D2 of connecting portion 27b and roughly even along the thickness of the shank 26b of the periphery of bottom 22b and connecting portion 27b, because in inner wall part 28, with compare with shank 26b position in opposite directions, raw material 20a is easier to flow to the position in opposite directions with connecting portion 27b, so occurs wavy easily in the end of hub portion 28b.Especially along the substantial middle of the interior week of connecting portion 27b and connecting portion 27b position in opposite directions, because it is big to leave the distance of shank 26b, raw material 20a flows easily, and therefore the length of the end from bottom 22b to hub portion 28b is elongated easily.Corresponding therewith, as above-mentioned Figure 30-shown in Figure 32, if the connecting portion 227b that forms, make that the distance of leaving shank 22b is big more, promptly the end side along interior week of connecting portion 227b from connecting portion 227b is to center side, thickness becomes thickness D22 from D21 and increases gradually, the 2nd punch die 54 that promptly replaces processing unit (plant) 40, form this connecting portion 227b and adopt the processing unit (plant) of not representing among the figure with the 2nd punch die of not representing among the figure to carry out punch process, then since raw material 20a be difficult to flow among the hub portion 28b with connecting portion 227b position in opposite directions, therefore can suppress the deviation of the flowability of raw material 20a.Like this, can suppress the circumference appearance significantly change of the length of the end from bottom 22b to hub portion 28b along hub portion 28b, the end that can be suppressed at hub portion 28b occurs wavy.In this variation, when forming connecting portion 227b, by making end side to center side along interior week of connecting portion 227b from connecting portion 227b, thickness becomes thickness D22 from D21 and increases gradually, the end that can be suppressed at hub portion 28b occurs wavy, but and be confined to this, as long as change the thickness of connecting portion 227b according to the distance of leaving shank 22b, thereby the length of regulating the end from bottom 22b to hub portion 28b gets final product.
In the manufacture method of the planet carrier 20 of embodiment, when forming outside wall portions 25b, make the external diameter R6 of shank 26b of workpiece component 20b roughly consistent with the internal diameter R7 of connecting portion 27b, but also can be when forming outside wall portions 25b, any one among the external diameter R6 that makes shank 26b and the internal diameter R7 of connecting portion 27b is slightly greatly.
In the manufacture method of the planet carrier 20 of embodiment, be formed with workpiece component 20b, its by have in central authorities hole 23b and hole 23b around the bottom 22b etc. of circle of inner wall part 24b constitute, but bottom 22b can not have inner wall part 24b yet around the 23b of hole.
In the manufacture method of the planet carrier 20 of embodiment, the connection root to bottom 22b from the connecting portion 27b of workpiece component 20b towards the directive effect power of connecting portion 27b, removes connecting portion 27b from workpiece component 20b.But also can adopt other method, for example,,, remove connecting portion 27b from workpiece component 20b towards the lateral direction active force from the inboard (inboard of outside wall portions 25b) of connecting portion 27b.At this moment, also can be when forming outside wall portions 25b, allow the external diameter R8 of connecting portion 27b be substantially equal to the external diameter R6 of shank 26b.
In the manufacture method of the planet carrier 20 of embodiment, ream connecting portion 27b from workpiece component 20b, after forming band leg endless member 20c, enlarge the internal diameter of the shank 26c of band leg endless member 20c, the side of shank 26c is removed the processing of burr, the metallic soap of removal after surface applied handled the roughness on the surface of bottom 22c and the shaping that flatness is put in order.But also can dispense some or a plurality of in these operations.
In the manufacture method of the planet carrier 20 of embodiment, the shank 26 that planet carrier 20 is made up of the bottom 22 of the circle that forms hole 23 in central authorities, 22 one-tenth approximate right angle of periphery and bottom of 22 form in the bottom 4 legs and constitute with respect to the hub portion cylindraceous 28 that the opposition side at shank 26 of bottom 22 forms quill shaft.But can there be hub portion 28 yet.
Among the embodiment, the manufacture method of the planet carrier 20 of planetary gears has been described, but be not limited to make the situation of the planet carrier 20 of this planetary gears, if become approximate right angle to form the band leg endless member that at least 1 leg is formed with periphery, then can be suitable for the manufacture method of the band leg endless member of any kind at this annulus by the annulus of ring-type.
More than, the embodiment that implements best mode of the present invention is illustrated, but the present invention is not limited to these embodiment, in the scope that does not break away from spirit of the present invention, can implement variety of way.
Utilize possibility on the industry
The present invention can be used for the planet carrier of planetary gear mechanism etc. with the manufacturing industry of leg ring-type parts.

Claims (42)

1. the manufacture method of an endless member is made the band leg endless member that is made of the annulus of ring-type and at least 1 leg roughly forming in the periphery of this annulus with meeting at right angles, it is characterized in that,
(a) raw material of preparation ring-type,
(b) these raw material are carried out 1 punch process and form and have the workpiece component that has the outside wall portions of the skirt shape that the rounded bottom in hole and shank that is made of above-mentioned leg the periphery in this bottom and the connecting portion that is connected this shank form in central authorities,
(c) remove above-mentioned connecting portion from the workpiece component of this formation, form above-mentioned band leg endless member.
2. the manufacture method of endless member according to claim 1 is characterized in that,
At least after above-mentioned operation (b), adopt cold-forging technique.
3. the manufacture method of endless member according to claim 1 and 2 is characterized in that,
At least after above-mentioned operation (b), do not anneal.
4. according to the manufacture method of each described endless member in the claim 1 to 3, it is characterized in that,
Above-mentioned operation (b) is for forming the operation of above-mentioned workpiece component according to the external diameter of the above-mentioned connecting portion in the above-mentioned outside wall portions greater than the mode of the external diameter of above-mentioned shank,
Above-mentioned operation (c) is to comprise according to utilizing to the power of leg directive effect the above-mentioned connecting portion in the above-mentioned outside wall portions being cut the operation that the mode that falls is removed the operation of this connecting portion (c1) from above-mentioned shank.
5. the manufacture method of endless member according to claim 4 is characterized in that,
Above-mentioned operation (b) is for forming the operation of above-mentioned workpiece component greater than the mode of the internal diameter of above-mentioned shank according to the internal diameter of the above-mentioned connecting portion in the above-mentioned outside wall portions.
6. according to the manufacture method of claim 4 or 5 described endless members, it is characterized in that,
Above-mentioned operation (b) is for forming the operation of above-mentioned workpiece component according to the roughly consistent mode of the internal diameter of the above-mentioned connecting portion in the above-mentioned outside wall portions and the external diameter of above-mentioned shank.
7. according to the manufacture method of each described endless member in the claim 4 to 6, it is characterized in that,
Above-mentioned operation (c1) is for removing above-mentioned connecting portion and reaming the operation of part in the hole of the bottom that comprises above-mentioned workpiece component.
8. according to the manufacture method of each described endless member in the claim 1 to 7, it is characterized in that,
Above-mentioned operation (b) for according to the part in succession between above-mentioned shank and the above-mentioned connecting portion promptly in succession the thickness of portion form the operation of above-mentioned workpiece component less than the mode of the thickness of the thickness of this shank and this connecting portion.
9. according to the manufacture method of each described endless member in the claim 1 to 8, it is characterized in that,
Above-mentioned operation (b) is for forming the operation of above-mentioned workpiece component less than the mode of the thickness of above-mentioned shank according to the thickness of above-mentioned connecting portion.
10. according to the manufacture method of each described endless member in the claim 1 to 9, it is characterized in that,
Above-mentioned operation (b) for according to the inboard of above-mentioned shank to the inboard of the connection root of above-mentioned bottom and above-mentioned connecting portion the root that is connected to above-mentioned bottom compare the operation that the mode with big radius and thick thickness forms above-mentioned workpiece component.
11. the manufacture method according to each described endless member in the claim 1 to 10 is characterized in that,
Above-mentioned operation (c) comprise remove connecting portion from the workpiece component of above-mentioned formation after, enlarge the operation (c2) of the internal diameter of above-mentioned shank.
12. the manufacture method according to each described endless member in the claim 1 to 11 is characterized in that,
Above-mentioned operation (c) comprise remove connecting portion from the workpiece component of above-mentioned formation after, remove and the above-mentioned connecting portion of above-mentioned shank between the operation (c3) of burr of connecting portion.
13. the manufacture method according to each described endless member in the claim 1 to 12 is characterized in that,
Above-mentioned operation (c) comprise remove connecting portion from the workpiece component of above-mentioned formation after, to the roughness of the medial surface at least of above-mentioned bottom and at least one operation of putting in order (c4) in the flatness.
14. the manufacture method of endless member according to claim 13 is characterized in that,
Above-mentioned operation (a) is the raw-material operation of the phosphatization of preparing the his-and-hers watches face and having carried out comprising the surface applied of metallic soap after handling,
Above-mentioned operation (c4) is for after implementing to remove the processing of above-mentioned metallic soap, to above-mentioned roughness and at least one operation of putting in order in the flatness.
15. the manufacture method according to each described endless member in the claim 1 to 14 is characterized in that,
Above-mentioned operation (b) has operation with the above-mentioned workpiece component of the coaxial wall cylindraceous portion of above-mentioned outside wall portions for forming along the medium pore of above-mentioned bottom.
16. the manufacture method of endless member according to claim 15 is characterized in that,
Above-mentioned operation (b) is for according to by changing the thickness of above-mentioned connecting portion according to the distance of leaving above-mentioned shank, thereby is adjusted to the mode of length of the end of above-mentioned wall portion, forms the operation of above-mentioned workpiece component.
17. the manufacture method of endless member according to claim 16 is characterized in that,
Above-mentioned operation (b) is for big more according to the distance of leaving above-mentioned shank, and the mode of the level and smooth more increase of the thickness of above-mentioned connecting portion forms the operation of above-mentioned workpiece component.
18. the manufacture method according to each described endless member in the claim 15 to 17 is characterized in that,
The mode that above-mentioned operation (b) has a regulation shape for the inner peripheral surface according to above-mentioned wall portion forms the operation of above-mentioned workpiece component.
19. the manufacture method of endless member according to claim 18 is characterized in that,
Above-mentioned operation (b) forms the operation of above-mentioned workpiece component for the mode that is shaped as spline-shaped according to afore mentioned rules.
20. the manufacture method according to each described endless member in the claim 15 to 19 is characterized in that,
Above-mentioned operation (b) is for forming the operation of the above-mentioned workpiece component with the above-mentioned wall portion that is made up of the hole of the hole of the central authorities of above-mentioned relatively bottom and the central authorities of unidirectional the 1st wall portion of above-mentioned outside wall portions and relative above-mentioned bottom and rightabout the 2nd wall portion of above-mentioned outside wall portions.
21. the manufacture method of endless member according to claim 20 is characterized in that,
Above-mentioned operation (c) is removed from the workpiece component of above-mentioned formation after the above-mentioned connecting portion for being included in, and removes the operation of the operation (c5) of above-mentioned the 1st wall portion from this workpiece component.
22. the manufacture method according to each described endless member in the claim 1 to 21 is characterized in that,
Above-mentioned endless member is the planet carrier in the planetary gears.
23. a band leg endless member is made of the annulus of ring-type and 1 leg that roughly forms in the periphery of this annulus at least with meeting at right angles, it is characterized in that,
The workpiece component of the outside wall portions of the skirt shape that the porose rounded bottom of central authorities and shank that is made of above-mentioned leg the periphery in this bottom and the connecting portion that is connected this shank are formed, remove above-mentioned connecting portion from having of being undertaken by raw material that 1 punch process forms to ring-type.
24. band leg endless member according to claim 23 is characterized in that,
Above-mentioned workpiece component forms the external diameter that makes the above-mentioned connecting portion in the above-mentioned outside wall portions external diameter greater than above-mentioned shank,
By according to the power of leg directive effect the above-mentioned connecting portion in the above-mentioned outside wall portions being cut the mode that falls from above-mentioned shank and remove this connecting portion and form above-mentioned band leg endless member by utilizing.
25. band leg endless member according to claim 24 is characterized in that,
Above-mentioned workpiece component forms the internal diameter that makes the above-mentioned connecting portion in the above-mentioned outside wall portions internal diameter greater than above-mentioned shank.
26. according to claim 24 or 25 described band leg endless members, it is characterized in that,
It is roughly consistent with the external diameter of above-mentioned shank that above-mentioned workpiece component forms the internal diameter that makes the above-mentioned connecting portion in the above-mentioned outside wall portions.
27. according to each described band leg endless member in the claim 23 to 26, it is characterized in that,
Form above-mentioned band leg endless member by the part of removing above-mentioned connecting portion and reaming the hole of the bottom that comprises above-mentioned workpiece component.
28. according to each described band leg endless member in the claim 23 to 27, it is characterized in that,
The part in succession that above-mentioned workpiece component forms above-mentioned shank and above-mentioned connecting portion promptly in succession the thickness of portion less than the thickness of this shank and the thickness of this connecting portion.
29. according to each described band leg endless member in the claim 23 to 28, it is characterized in that,
Above-mentioned workpiece component forms the thickness of the thickness of above-mentioned connecting portion less than above-mentioned shank.
30. according to each described band leg endless member in the claim 23 to 29, it is characterized in that,
Above-mentioned workpiece component forms the inboard of above-mentioned shank and compares to the root that is connected of above-mentioned bottom with the inboard of above-mentioned connecting portion to the connection root of above-mentioned bottom, has big radius and thick thickness.
31. according to each described band leg endless member in the claim 23 to 30, it is characterized in that,
After removing connecting portion, enlarge the internal diameter of above-mentioned shank and form above-mentioned band leg endless member from above-mentioned formed workpiece component.
32. according to each described band leg endless member in the claim 23 to 31, it is characterized in that,
After removing connecting portion from above-mentioned formed workpiece component, remove and the above-mentioned connecting portion of above-mentioned shank between connecting portion burr and form above-mentioned band leg endless member.
33. according to each described band leg endless member in the claim 23 to 32, it is characterized in that,
Above-mentioned band leg endless member is by after removing connecting portion from above-mentioned formed workpiece component, and the roughness of the medial surface at least of above-mentioned bottom and at least one in the flatness are put in order and formed.
34. band leg endless member according to claim 33 is characterized in that,
The raw material of above-mentioned ring-type are the raw material of the phosphatization of the surface applied of the surface having been carried out comprising metallic soap after handling,
Above-mentioned band leg endless member by the processing of implement removing above-mentioned metallic soap after, above-mentioned roughness and in the flatness at least one are put in order and are formed.
35. according to each described band leg endless member in the claim 23 to 34, it is characterized in that,
Above-mentioned workpiece component is for having the parts with the coaxial wall cylindraceous portion of above-mentioned outside wall portions along the medium pore of above-mentioned bottom.
36. band leg endless member according to claim 35 is characterized in that,
Above-mentioned workpiece component is by changing the thickness of above-mentioned connecting portion according to the distance of leaving above-mentioned shank, thus be adjusted to above-mentioned wall portion the end length and form.
37. band leg endless member according to claim 36 is characterized in that,
It is big more that above-mentioned workpiece component forms the distance of leaving above-mentioned shank, the level and smooth more increase of the thickness of above-mentioned connecting portion.
38. according to each described band leg endless member in the claim 35 to 37, it is characterized in that,
The inner peripheral surface that above-mentioned workpiece component forms above-mentioned wall portion has the regulation shape.
39. according to the described band leg of claim 38 endless member, it is characterized in that,
The inner peripheral surface that above-mentioned workpiece component forms above-mentioned wall portion is a spline-shaped.
40. according to each described band leg endless member in the claim 35 to 39, it is characterized in that,
Above-mentioned workpiece component is formed with the above-mentioned wall portion that is made up of the hole of the hole of the central authorities of above-mentioned relatively bottom and the central authorities of unidirectional the 1st wall portion of above-mentioned outside wall portions and relative above-mentioned bottom and rightabout the 2nd wall portion of above-mentioned outside wall portions.
41. according to the described band leg of claim 40 endless member, it is characterized in that,
Above-mentioned band leg endless member is by after removing above-mentioned connecting portion from the workpiece component of above-mentioned formation, remove above-mentioned the 1st wall portion and form from this workpiece component.
42. according to each described band leg endless member in the claim 23 to 41, it is characterized in that,
Above-mentioned band leg endless member is the planet carrier in the planetary gears.
CNA2006800279507A 2005-08-31 2006-08-30 Manufacturing method for an annular member and a pronged annular member Pending CN101232960A (en)

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