CN1076993C - Method of fabricating shaft from metal plate - Google Patents
Method of fabricating shaft from metal plate Download PDFInfo
- Publication number
- CN1076993C CN1076993C CN96180385A CN96180385A CN1076993C CN 1076993 C CN1076993 C CN 1076993C CN 96180385 A CN96180385 A CN 96180385A CN 96180385 A CN96180385 A CN 96180385A CN 1076993 C CN1076993 C CN 1076993C
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- axle
- metallic plate
- protuberance
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- manufacturing process
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Abstract
The present invention forms a shaft of high precision through a first procedure for front extrusion processing by processing a metal plate 1 with pressure and a second procedure for extending a protrusion part into a shaft shape by pressing a punch on the protrusion part obtained in the first procedure and extruding in the back by aiming at vertically forming the shaft integrated with the metal plate in any positions of the metal plate.
Description
The present invention relates to make the axle manufacturing process of the axle that becomes one with metallic plate by metallic plate.
In recent years, when on metallic plate, being provided with spool, be being arranged on the metallic plate to metallic plate or by riveted and fixed by spot welding etc. by the axle of other operations processing.
Below, the method that forms axle on metallic plate of prior art is described.
Figure 17 is the schematic diagram that forms the method for axle with the riveted and fixed mode of prior art on metallic plate.In this method, process on the metallic plate 10 that axle 11 will be set and portal, riveted and fixed is through the axle of other operation processing then.Figure 18 is the schematic diagram that forms the method for axle with the spot welding mode of prior art on metallic plate.This method is fixed on the metallic plate 12 that axle 13 will be set by the axle 13 of an electrode holder through other operation processing.
In addition, Japanese kokai publication hei 6-26737 communique has disclosed a kind of manufacturing process that forms axial region, as shown in figure 19, utilizes first instrument 22 from a pressing sheet material 21, on single face, form the hole, and on another side, form after the protuberance 24, allow the lower surface 23a of second instrument 23 from the hole side contacts, by extruding the unnecessary amount of the part that is squeezed is moved towards protuberance, make protuberance 24 more outstanding, with 22 pushings of first instrument, the height of protuberance 24 is increased once more, form axial region thus.Further, as the manufacturing process of axle shape thing, known have as shown in figure 20 the forward extrusion processing method and backward extrusion processing method shown in Figure 21.
But, form in the method for axle in riveted and fixed or spot welding by above-mentioned prior art, owing to be, axle be fixed on the metallic plate, thereby brought the high problem of cost with after other operation processing axles.In addition, when riveted and fixed, riveting pressure can cause metallic plate distortion, and the result is difficult to obtain the perpendicularity of metallic plate and axle; And when spot welding,, can not obtain full intensity because bonding area is little.
Moreover, open in the method that flat 6-26737 communique put down in writing the spy, because the extruding force of instrument acts on the boundary portion of sheet material and protuberance all the time, be difficult to guarantee the height of protuberance, and the perpendicularity or the external diameter precision that will obtain the relative sheet material of protuberance also be very difficult, and can bring the various problem of manufacturing procedure number.
Also have, any situation of forward extrusion processing, backward extrusion processing all is by the sheet material material being processed to form a method of shape thing, therefore, can not forming from the axle of the outstanding one of flat board.
The present invention proposes in order to solve above-mentioned existing in prior technology problem, its objective is that it is the axle manufacturing process of one that a kind of can being vertically formed in arbitrary position of metallic plate with this metallic plate is provided.
Of the present invention by metallic plate make the axle manufacturing process comprise: by the metallic plate pressure processing is carried out semi-stamping or forward extrusion processing first operation; Be pressed into drift by aforementioned first operation on the resulting protuberance that remains on the aforementioned metal plate in the punch die, in the opposite direction aforementioned protuberance carried out backward extrusion, making protuberance extend second operation of a shape thus with the side that is pressed into aforementioned drift.
In addition, feature of the present invention is to form the axle of sustained height together in several positions.
Another feature of the present invention is, will in second operation, allow the protuberance elongation form axle direction, with in another operation, the reverse each other mode of the direction of metallic plate punching press is carried out order and processes.
According to above-mentioned formation, by metallic plate is carried out pressure processing, and after carrying out forward extrusion and being processed to form protuberance, with drift, punch die this protuberance is carried out backward extrusion processing and forms axle, thereby, can on the optional position of metallic plate, be axle one, that can fully guarantee length precision, external diameter precision and perpendicularity etc. with minimum operation number formation and metallic plate.
In addition, by form the axle of sustained height together in several positions, by the backward extrusion processing of second operation, make the elongate axis of several sustained heights, like this, even metallic plate when upwards float on the punch die surface, also can be eliminated the upwards inclination of the uneven or metallic plate of amount of floating.
Further, because in second operation, the direction of carrying out punch process in the prolonging direction of axle and another operation on metallic plate is reverse each other, therefore when in the process in proper order metallic plate being carried out backward extrusion, can not produce the gap between die face and the metallic plate, make the punch process in other operations be easy to carry out.
Fig. 1 is the schematic diagram of state before first operation of the axle manufacturing process made of the metallic plate of one embodiment of the invention.
Fig. 2 is illustrated in the schematic diagram that forms the state of protuberance in first operation.
Fig. 3 is the schematic diagram of the relation of drift, punch die and metallic plate in expression second operation.
Fig. 4 is the schematic diagram of the state after expression second operation finishes.
Fig. 5 (a) is the schematic diagram of expression protuberance volume, (b) is the schematic diagram of the volume of expression axle.
Fig. 6 is the schematic diagram of the deviation ratio relation of expression drift amount of being pressed into and SPCC material.
Fig. 7 is the schematic diagram of expression drift amount of being pressed into and high strength steel material deviation ratio relation.
Fig. 8 is the schematic diagram of the relation of the external diameter of expression metallic plate protuberance and punch die internal diameter.
Fig. 9 is the schematic diagram of the relation of the expression metallic plate protuberance height and the punch die degree of depth.
Figure 10 be expression in first operation drift and the schematic diagram of die size relation.
Figure 11 is drift the be pressed into amount of expression in first operation and the schematic diagram of the relation of protuberance height.
Figure 12 be expression in second operation drift and the schematic diagram of die size relation.
Figure 13 is the schematic diagram of the drift amount of being pressed in expression second operation.
Figure 14 is the schematic diagram of the shaft size after the expression process finishing.
Figure 15 (a) is the key diagram of the punch process direction same case of elongate axis direction in the order of representation processing and another operation.
Figure 15 (b) is the elongate axis direction key diagram opposite with the punch process direction of another operation in the order of representation processing.
Figure 16 is the schematic diagram of expression multidiameter machining state.
Figure 17 is expression is provided with the method for axle with the riveted and fixed of prior art a schematic diagram.
Figure 18 is the schematic diagram that the method for axle is set with the spot welding of prior art.
Figure 19 is the schematic diagram of the axle manufacturing process of prior art in the known example of expression.
Figure 20 is the key diagram of forward extrusion processing.
Figure 21 is the key diagram of backward extrusion processing.
Hereinafter with reference to the description of drawings embodiments of the invention.
In Fig. 1, the 1st, need be provided with highlightedly the axle metallic plate.The 2nd, employed drift when metallic plate being carried out semi-stamping or carrying out forward extrusion by pressure processing, this forward extrusion is promptly along the direction mobile material identical with these drift 2 moving directions.The 3rd, employed punch die when with drift 2 metallic plate 1 being carried out semi-stamping or carrying out forward extrusion by pressure processing.Shown in Fig. 24 is protuberances of the metallic plate 1 that obtains by semi-stamping or forward extrusion.Among Fig. 35 is employed drifts during towards backward extrusion the material of protuberance 4.The 6th, the employed punch die during towards backward extrusion that uses with drift 5 protuberance 4.Among Fig. 47 processes the all-in-one-piece axle by backward extrusion with metallic plate.
Hereinafter explanation has operation above formation, processing and metallic plate 1 all-in-one-piece axle.At first, utilize drift 2 and carry out semi-stamping or forward extrusion to forming axle 7 volume required materials by pressure processing.Then, by drift 5 and this protuberance 4 of punch die 6 compressions, carry out backward extrusion, processing axle 7 through the metallic plate 1 of semi-stamping or forward extrusion.At this moment, because the material of protuberance 4 is converted into axle 7, and 7 a moving direction elongation towards drift 5, thereby the metallic plate 1 of Fig. 4 is in the state that upwards floats from the upper surface of punch die 6.
Above-mentioned a series of operation at first in the forward extrusion operation of first operation, shown in Fig. 5 (a) and (b), must make the volume required material of formation axle outstanding by forward extrusion.This its internal diameter of forward extrusion processing and utilization and the identical punch die of axle external diameter are determined the punch diameter and the amount of being pressed into that highly are consistent with axle.At this moment, when the height of axle hangs down, because it is few to process the back volume outstanding by forward extrusion, so can allow punch diameter identical with the internal diameter of punch die.This is because the volume cause identical with the volume of being clamp-oned by drift of being given prominence to.If axial ratio is higher,, then must select the drift of diameter for use greater than the punch die internal diameter because the change of outstanding volume is many.
But the drift amount of being pressed at this moment can not be original overhang.Be bound to produce move (call skew) of material to other direction.Fig. 6 shows the side-play amount of the SPCC material of t=1.2, and Fig. 7 shows the side-play amount of the high strength steel material of t=0.8.The internal diameter of punch die is φ 2.Can clearly be seen that from Fig. 6 when punch diameter was big, the side-play amount of material was also big.When the diameter of drift was φ 4, about half of materials of the amount of being pressed into was offset towards periphery.It can also be seen that in addition when punch diameter was identical, the amount of being pressed into was big more, the skew of material is few more.
According to these data, the needed punch diameter and the amount of being pressed in the time of can determining the axle shaping.
Then, the protuberance 4 through the resulting material of forward extrusion is embedded in the punch die 6, be processed to form axle 7 by backward extrusion by drift 5 extruding.
At this moment, because the internal diameter of punch die 6 must be identical with the external diameter of axle 7, so, for the protuberance 4 that makes material just in time embeds in the punch die 6 at an easy rate, as shown in Figure 8, preferably allow the diameter A of material protuberance 4 less than the internal diameter B of punch die 6.In initial experiment, the diameter of ledge is littler by 0.01 than the punch die internal diameter of backward extrusion.But, in this is set, owing to will exert oneself when entering punch die, so the order die for processing is inappropriate.In the experiment of after this carrying out, make and make the ledge of the diameter of ledge than the little 0.05mm of punch die internal diameter of backward extrusion, ledge can very successfully enter in the punch die as a result.Therefore, when forming axle in the order die for processing, the punch die internal diameter of forward extrusion is set in more proper to 0.1mm than the little 0.01mm of axle external diameter, preferably sets little 0.05mm for.
Head during as this backward extrusion at first, in order to allow moving of material carry out smoothly, must make taper to the front end of drift.
In addition, in order to allow metallic plate above punch die, upwards float, can not use the stripper plate extrded material.
Further, when embedding the protuberance 4 of metallic plate 1 in the punch die 6, if gapped between punch die 6 upper surfaces and the metallic plate, because the base portion of axle finally will form step, so as shown in Figure 9, the degree of depth of punch die 6 should be than the dark 0.05～0.1mm of the height of material ledge.
As object lesson,, can carry out the processing of diameter phi 1.99mm, height 3.4mm for the SPCC material of the thickness of slab t=1.2 of metallic plate 1.
At this moment, utilize the diameter d of the drift 2 of forward extrusion processing shown in Figure 10
2Be φ 3.0mm, the inner diameter d of punch die 3
3Be φ 1.94mm.In addition, comprise that the size of each one of material among Figure 11 of the formed protuberance 4 of result of this forward extrusion processing is, the drift amount of being pressed into h is 1.0mm, and the diameter A of protuberance 4 is φ 1.93mm, height h
4Be 1.87mm.
Further, in the backward extrusion processing of protuberance 4, as shown in figure 12, the diameter d of drift 5
5Be φ 1.4mm, the inner diameter d of punch die 6
6Be φ 1.99mm, the degree of depth h of punch die 6
6Be 1.90mm.In addition, as shown in figure 13, the amount of the being pressed into h of drift 5
5Be 1.65mm.
The size of resulting axle 7 each several parts shown in Figure 14 of above result is that thickness of slab t is 1.2mm, height h
7Be 3.367～3.432mm, diameter d
7Be φ 1.983～1.992mm.Highly, the error of diameter is respectively 0.07mm and 0.01mm.In addition, the crooked of pivot end is 0.00～0.05mm.
In addition, making the key that uprises of height of axle is to make most material outstanding and make the sidewall wall thickness attenuation of axle by forward extrusion.The affirmation result of this height boundary hereinafter is shown.
Use the SPCC material of t=1.2mm, and with the drift of the forward extrusion of diameter phi 4mm.When using the drift of diameter phi 5mm, the skew quantitative change of material is many, the expansion of the base portion generating material of protuberance.Sidewall at axle is to experimentize under the 0.1mm in addition, because insufficient strength, from the base portion generation warpage of axle, so this sidewall should be made 0.2mm.Its result, the height of axle becomes 5.95mm.
By above embodiment, should hold following each item.
That is to say, crooked about axle, in following experiment, in order on the flat board of 40mm * 40mm, to form the axle of φ 2mm, though can accomplish not have big crooked, but in the occasion of big material, the material come-up can cause beat (jump ね and go up ガ リ) upwards during owing to backward extrusion, so will consider the crooked of axle.Therefore should be configured in several positions to axle, balance makes material upwards beat well.
In addition, in the backward extrusion operation, during backward extrusion, though material upwards beat,, this is beated at the height of axle not simultaneously, the amount difference that it is upwards beated.Therefore, in the same operation of backward extrusion, can only form the axle of sustained height.Moreover, in this operation, can not carry out other processing (punching press, bending etc.), and preferably not hinder the control that material is upwards beated.
Further, when in the order die for processing, carrying out the backward extrusion manufacturing procedure, direction that can restrictive axes.Shown in Figure 15 (a), when forming downward axle 30,, thereby produce the gap between die face 32 and the material 31 because material 31 upwards beats on top, in another operation 33, carry out punching press etc. and add man-hour, finally can produce deflection on the material 31, on the contrary, at the axle 34 o'clock that forms upwards, shown in Figure 15 (b), owing to be downward extrded material 31,, in another operation 35, can carry out punch process etc. at an easy rate so do not produce the gap between die face 32 and the material 31.
In addition, by the formed axle 7 of present embodiment is carried out following process, can form the axle of band ladder 40 as shown in figure 16.
The present invention mentioned above, by metallic plate is carried out pressure processing, and after carrying out forward extrusion and being processed to form protuberance, with drift, punch die this protuberance is carried out backward extrusion processing and forms axle, thereby, can on the optional position of metallic plate, be axle one, that can fully guarantee length precision, external diameter precision and perpendicularity etc. with minimum operation number formation and metallic plate.
In addition, by form the axle of sustained height in several positions, process the elongate axis that makes several sustained heights by the backward extrusion of second operation, like this, when even metallic plate upwards floats from the punch die surface, also can eliminate the upwards inclination of the uneven and metallic plate of amount of floating.
Further, because in second operation, the direction of carrying out punch process in the prolonging direction of axle and another operation on metallic plate is reverse each other, therefore when in the process in proper order metallic plate being carried out backward extrusion, can not produce the gap between die face and the metallic plate, make the punch process in other operations be easy to carry out.
Claims (6)
1, (revise back) is a kind of makes the manufacturing process of axle by metallic plate, comprising: first operation of metallic plate being carried out semi-stamping or forward extrusion processing by pressure processing; Resulting by aforementioned first operation, remain on the protuberance of the aforementioned metal plate in the punch die, with with aforementioned first operation in the semi-stamping of pressure processing or the identical direction of forward extrusion machine direction be pressed into drift, aforementioned protuberance is carried out backward extrusion, make protuberance extend second operation of a shape thus.
2, according to claim 1ly make the manufacturing process of axle, it is characterized in that, in second operation, be used to keep the punch die internal diameter of protuberance to set the big 0.01mm～0.1mm of external diameter for than aforementioned protuberance by metallic plate.
3, according to claim 1ly make the manufacturing process of axle, it is characterized in that, in second operation, be used to keep the degree of depth of the punch die of protuberance to set for than the dark 0.05mm～0.1mm of the height of aforementioned protuberance by metallic plate.
4, according to claim 1 by metallic plate make the axle manufacturing process, it is characterized in that in second operation, the drift that utilizes front end to make taper carries out backward extrusion to protuberance.
5, according to claim 1 by metallic plate make the axle manufacturing process, it is characterized in that, form together in several positions sustained height the axle.
6, according to claim 1ly make the manufacturing process of axle, it is characterized in that, in second operation, so that protuberance elongation forms the direction of axle and in another operation metallic plate carried out the reverse each other mode of die-cut direction and carry out order and process by metallic plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96180385A CN1076993C (en) | 1996-09-06 | 1996-09-06 | Method of fabricating shaft from metal plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96180385A CN1076993C (en) | 1996-09-06 | 1996-09-06 | Method of fabricating shaft from metal plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1224375A CN1224375A (en) | 1999-07-28 |
| CN1076993C true CN1076993C (en) | 2002-01-02 |
Family
ID=5127844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96180385A Expired - Fee Related CN1076993C (en) | 1996-09-06 | 1996-09-06 | Method of fabricating shaft from metal plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1076993C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100352571C (en) * | 2003-10-17 | 2007-12-05 | 中村制作所株式会社 | Method for forming protruded shaft of sealed case for memory device |
| CN101041172B (en) * | 2006-03-20 | 2012-04-04 | 先技精工(日本)有限公司 | Riveted assembly, assembly and manufacturing method and manufacturing device thereof |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298455C (en) * | 2001-03-29 | 2007-02-07 | 昭和电工株式会社 | Closed forging method, forging manufacturing system using the method, forging dies used in the method and system, and preforms or yokes manufactured by the method and system |
| JP4432659B2 (en) * | 2004-07-29 | 2010-03-17 | トヨタ自動車株式会社 | Press molding equipment and cushion ring |
| CN102009097B (en) * | 2009-09-04 | 2012-12-12 | 合谥螺丝五金股份有限公司 | Forming method of single-sided tenon of metal plate and USB flash drive with single-side tenon of metal plate |
| JP4477695B1 (en) * | 2009-10-21 | 2010-06-09 | 有限会社オダ技商 | Pipe material groove forming method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50117674A (en) * | 1974-02-28 | 1975-09-13 | ||
| JPS5722841A (en) * | 1980-07-16 | 1982-02-05 | Nakamura Seisakusho:Kk | Formation of plural pieces of stud bolt |
| JPS5987946A (en) * | 1982-11-10 | 1984-05-21 | Aida Eng Ltd | Method and device for manufacturing parts having projection constituted of thin thickness |
| JPH04127930A (en) * | 1990-09-19 | 1992-04-28 | Aida Eng Ltd | Plastic working method and device for bevel gear |
-
1996
- 1996-09-06 CN CN96180385A patent/CN1076993C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50117674A (en) * | 1974-02-28 | 1975-09-13 | ||
| JPS5722841A (en) * | 1980-07-16 | 1982-02-05 | Nakamura Seisakusho:Kk | Formation of plural pieces of stud bolt |
| JPS5987946A (en) * | 1982-11-10 | 1984-05-21 | Aida Eng Ltd | Method and device for manufacturing parts having projection constituted of thin thickness |
| JPH04127930A (en) * | 1990-09-19 | 1992-04-28 | Aida Eng Ltd | Plastic working method and device for bevel gear |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100352571C (en) * | 2003-10-17 | 2007-12-05 | 中村制作所株式会社 | Method for forming protruded shaft of sealed case for memory device |
| CN101041172B (en) * | 2006-03-20 | 2012-04-04 | 先技精工(日本)有限公司 | Riveted assembly, assembly and manufacturing method and manufacturing device thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1224375A (en) | 1999-07-28 |
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