CN102189391A - Axial machining method - Google Patents
Axial machining method Download PDFInfo
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- CN102189391A CN102189391A CN2010101325290A CN201010132529A CN102189391A CN 102189391 A CN102189391 A CN 102189391A CN 2010101325290 A CN2010101325290 A CN 2010101325290A CN 201010132529 A CN201010132529 A CN 201010132529A CN 102189391 A CN102189391 A CN 102189391A
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Abstract
The invention relates to an axial machining method. A first fixture set, a second fixture set and a third fixture set are included and are respectively provided with a first and a second fixtures, a third and a fourth fixtures and a fifth and a sixth fixture which are symmetrical pairwise; the fixture sets are connected to an axial machining device, and are internally and respectively provided with a first, a second and a third accommodating grooves which are communicated with outside. Therefore, a workpiece is sequentially accommodated in the first, the second and the third fixture sets, and machined multiple times sequentially by using a cutter, and finally, the workpiece of a cylinder is transformed into a polygon body. Compared with the prior art in which a plurality of large heavy tools are needed for machining, the invention achieves the purposes of simplifying production process, increasing production speed and lowering production cost.
Description
Technical field
A kind of axial processing method is meant a kind of procedure for producing of simplifying especially, and has the axial processing method that reduces production costs with environmental protection concurrently.
Background technology
Existing workpiece work flow is as follows:
One, provides one first workpiece, be mainly a column type workpiece.
Two, high frequency forge hot is carried out the high frequency forge hot with a high frequency forge hot board to this first workpiece, makes the metal material of this first workpiece softening.
Three, punch forming is inserted this softening first workpiece in one mould of one punch forming board, with impact style, makes the profile of this first workpiece be shaped to one second workpiece, and this second workpiece is a polygonal body.(finishing the germule program)
Four, the first embryo forming of milling machine is fixed in this second workpiece on the one milling machine board, expects and burr with unnecessary the cutting that utensils such as milling cutter are removed on this second workpiece, revises (first embryo formingization) at the external form accuracy of this second workpiece simultaneously.
Five, polishing is inserted this second workpiece in the one sandblast board, impacts this second workpiece planarization with a large amount of little Metal Ball, makes this second workpiece planarization be shaped to a shiny surface.(burr are removed and the external form sophistication)
Can learn by above steps, existing workpiece processing mode, at least need just can finish to above Precision Machining processing procedure through four, and each program need spend the considerable time and possess the heavy capital of large-scale machine-tool set and just can finish, therefore, cause the production time of single workpiece long, when a large amount of production, certainly will spend the considerable time.
Moreover, in the above steps, at least used high frequency hot forging equipment, pressing equipment, milling equipment and abrasive blast equipment or the like, per unit cost is not cheap, therefore, when the dealer produces in a large number, except will buying the more equipment board, to allow board move for a long time exactly, and cause the allowance for depreciation of board to improve easily, and need the more money of cost to maintain, make the production cost of whole work-piece can't reduce even must improve.
In addition, in the above-mentioned step of mentioning the high frequency forge hot, characteristic by physics and metal material can be learnt, the object of metal material, heat after cooling through high temperature, metallic character certainly will be changed, particularly in above-mentioned processing procedure, the purpose of metal material workpiece heating is not in order to make its harder (for example metal forging), but the position make it softening and be beneficial to drawing, fast cooling after moulding again avoids workpiece after the moulding in the process of cooling, because the relation of rising-heat contracting-cold produces distortion or precision descends, so, the easier deterioration that causes metal material of above-mentioned mode; Even more noteworthy, workpiece after the punch forming, must lower the temperature with special cooling agent, this type of cooling agent is the chemical synthesis oils of low temperature mostly, once touch the workpiece of high temperature, the cooling agent of part produces gasification because of high temperature, these gases all contain a large amount of chemical substances, a period of time is accumulated, and not only the health to the staff exerts an influence, the easier pollution that causes environment.
Summary of the invention
Because above-mentioned demand, the inventor hence studies intensively, and long-pending individual is engaged in the many years of experience of this cause, designs a kind of brand-new a kind of axial processing method eventually.
A purpose of the present invention aims to provide a kind of procedure for producing of simplifying, and has the axial processing method that reduces production costs with environmental protection concurrently.
A purpose of the present invention aims to provide a kind of axial processing method that can fast a workpiece be shaped to two even-multiple limit type.
A purpose of the present invention aims to provide a kind of axial processing method that can fast a workpiece be shaped to two product times limit type.
For achieving the above object, a kind of axial processing jig structure of the present invention, include the tool group of duplicating, these tool groups are used to be connected to a default axial process equipment, and inside is used to accommodate a default workpiece, this workpiece is axially processed with a default cutter, these tool groups include one first tool group, one second tool group and one the 3rd tool group, this second tool group has two one the 3rd corresponding tools and with one the 4th tool and the 3rd tool group cording two corresponding one the 5th tool and one the 6th tools is arranged, and being formed with between this first tool and this second tool can be to one first storage tank that is interlinked to the outside, then being formed with between this 3rd tool and the 4th tool and the 5th tool and the 6th tool can be to one first storage tank and one the 3rd storage tank that is interlinked to the outside, and this 3rd storage tank two bottom sides is provided with an inclined side of symmetry again.
It adds man-hour, and this workpiece is positioned over this first tool group inside, and with one first plane of this cutter in this work piece surface moulding symmetry; Then this workpiece is positioned over this second tool group inside, and with one second plane of this cutter in this work piece surface moulding symmetry; In regular turn this workpiece is positioned over the 3rd tool group and this first tool group inside then, and with one three plane and Siping City face of this cutter in this work piece surface moulding symmetry; At this moment, as desire to produce more planes, then, this workpiece is placed in these tool groups, make this workpiece become a polygonal body (two even-multiple limit types) according to required polygonal limit number in this work piece surface.
Except above-mentioned processing mode, the present invention is adding man-hour, and this workpiece is positioned over this first tool group inside, and with one first plane of this cutter in this work piece surface moulding symmetry; Then this workpiece is positioned over the 3rd tool group inside, makes this first plane be close proximity to these inclined sides of the 3rd storage tank, and with one second plane of this cutter in this work piece surface moulding symmetry; Then this workpiece is continued to be positioned over the 3rd tool group inside, make this second plane be close proximity to these inclined sides of the 3rd storage tank, and with one three plane of this cutter in this work piece surface moulding symmetry; At this moment, as desire to produce more planes, then, this workpiece is placed in these tool groups, make this workpiece become a polygonal body (two product times limit type) according to required polygonal limit number in this work piece surface.
Description of drawings
Fig. 1 is the flow chart of preferred embodiment of the present invention;
Fig. 2 is the stereogram of preferred embodiment of the present invention;
Fig. 3 is the action schematic diagram one of preferred embodiment of the present invention;
Fig. 4 is the action schematic diagram two of preferred embodiment of the present invention;
Fig. 5 is the action schematic diagram three of preferred embodiment of the present invention;
Fig. 6 is the action schematic diagram four of preferred embodiment of the present invention;
Fig. 7 is the action schematic diagram five of preferred embodiment of the present invention;
Fig. 8 is the action schematic diagram six of preferred embodiment of the present invention;
Fig. 9 is the present invention's flow chart of a preferred embodiment again;
Figure 10 is the present invention's stereogram of a preferred embodiment again;
Figure 11 is the present invention's action schematic diagram one of a preferred embodiment again;
Figure 12 is the present invention's action schematic diagram two of a preferred embodiment again;
Figure 13 is the present invention's action schematic diagram three of a preferred embodiment again.
[primary clustering symbol description]
The first tool group 1
The second tool group 2
The 3rd tool 21
The 4th tool 22
The 3rd tool group 3
The 5th tool 31
The 6th tool 32
The 3rd storage tank 33
Inclined side 34
Workpiece 4,4 '
The first plane A, A '
The second plane B, B '
The 3rd plane C, C '
The face D of Siping City, D '
The specific embodiment
Understand content of the present invention for your juror can be known, it is graphic only to arrange in pairs or groups in the following instructions, please consult.
See also Fig. 1, shown in Figure 2, be flow chart, stereogram and the action schematic diagram one, two of preferred embodiment of the present invention, as shown in the figure, the present invention includes the first tool group 1, the second tool group 2 and the 3rd tool group 3 of duplicating, wherein:
This first tool group 1 has two corresponding one first tool 11 and one second tools 12, and be formed with between this first tool 11 and this second tool 12 can be to one first storage tank 13 that is interlinked to the outside.
This second tool group 2 has two corresponding one the 3rd tool 21 and one the 4th tools 22, and being formed with between the 3rd tool 21 and the 4th tool 22 can be to one second storage tank 23 that is interlinked to the outside, and the inner width of this second storage tank 23 is less than this first storage tank 13.
The 3rd tool group 3 has two corresponding one the 3rd tool 21 and one the 3rd tools 21, and being formed with between the 5th tool 31 and the 6th tool 32 can be to one the 3rd storage tank 33 that is interlinked to the outside, and is provided with an inclined side 34 of symmetry in the 3rd storage tank 33 two bottom sides.
It should be noted, these tool groups of the present invention are used to be connected to a default axial process equipment, in supplying, this axial process equipment is provided with a cutter 5, in institute of the present invention drawings attached, this axial process equipment mainly can be the CNC process equipment, milling equipment, lathe equipments, perhaps has the device of seizing these tools on both sides by the arms and axially rotating processing with cutter 5, all should be contained by this axial process equipment of the present invention, moreover this axial process equipment and this cutter 5 early is the equipment in more than open and the row year, therefore, in all accompanying drawings of this specification, this axial process equipment is only with text description, and this cutter 5 is only represented with schematic diagram, hereby statement.
Desire to carry out the man-hour that adds of this cutter 5 when a workpiece 4, this workpiece 4 is positioned over 12 of this first tool 11 of this first tool group 1 and second tools, this workpiece 4 is contained in this first storage tank 13, then this first tool group 1 is fixed in this axial process equipment, just can processes; It should be noted, in the present embodiment, illustrate that with this first tool group 1 this workpiece 4 is contained in the mode of these tool group inside, and this second tool group 2 and the 3rd tool group 3 are accommodated this workpiece 4 and are incorporated into this axial process equipment also according to the mode shown in the present embodiment.
When this workpiece 4 desired to be processed into eight limit types, it carried out according to the following step:
(100) this workpiece is positioned over one first tool group inside, and with the first surface of this cutter in this work piece surface moulding symmetry;
At first these first storage tank, 13 inside of this first tool group 1 will be placed on this workpiece 4, at this moment, these workpiece 4 part bodies can expose to this first tool group 1, then process with these cutter 5 these workpieces 4 of contact, produce the first plane A, withdraw from this cutter 5 then and unclamp this first tool group 1, rotate this workpiece 4, make this first plane A be close proximity to the bottom of this first storage tank 13, so far, again according to above-mentioned step, produce the first plane A ' with this cutter 5 on these workpiece 4 surfaces, then this first plane A, A ' between the parallel each other plane of symmetry.
(101) this workpiece is positioned over one second tool group inside, and with the second surface of this cutter in this work piece surface moulding symmetry;
Continuous this second storage tank 23 that this workpiece 4 is placed this second tool group 2, these first planes A of this workpiece 4, A ' the both sides inwall that will be close proximity to this second storage tank 23 then, then, produce one second plane B, B ' on these workpiece 4 surfaces with this cutter 5 according to above-mentioned step.
(102) this workpiece is positioned over one the 3rd tool group inside, and with one three surface of this cutter in this work piece surface moulding symmetry;
(104) this workpiece is positioned over the 3rd tool group inside, and with one four surface of this cutter in this work piece surface moulding symmetry;
Then, continuous the 3rd storage tank 23 that this workpiece 4 is placed the 3rd tool group 3, these first planes A, the A ' of this workpiece 4 or the second plane B, B ' these inclined sides 34 that will be close proximity to the 3rd storage tank 33 then, then, produce one the 3rd plane C, C ' on these workpiece 4 surfaces with this cutter 5 according to above-mentioned step; This step just can produce a face D of Siping City, D ' in these workpiece 4 surfaces after repeating once, at this moment, this workpiece 4 will become one or eight limit type bodies.
By aforesaid way, this workpiece 4 is configured as after the eight limit types, and its surface, must reach the simplification procedure for producing and have the characteristics that reduce production costs with environmental protection concurrently through too much to the mode of production of program compared to prior art with through being a smooth surface; What remark additionally is, the so-called processing procedure of simplifying, promptly cooperate these storage tanks configurations of these tool group inside with single axial process equipment, just can directly this workpiece 4 be configured as polygonal body, produce the rough several seconds of time on each plane, and can simplify production procedure, and do not need to buy more the large-scale production board of all kinds of forms, omitted the purchase of board, the maintenance expense, directly reduce production costs, simultaneously, this workpiece 4 high temperature heating and the process of cooling off can not occur in the process of producing, and the metal material characteristic that remains intact, can omit the step of cooling again, can not use chemical synthetic oils such as cooling agent, reach environment protecting.
(105) according to required polygonal limit number, this workpiece is placed in these tool groups, make this workpiece become a polygonal body.
In above-mentioned steps (104), this workpiece 4 is configured as eight limit type bodies, if month make this workpiece 4 become more polygonal body, only need slightly for a change above-mentioned these first planes A, A ', the second plane B, B ', the 3rd plane C, C ' and the face D of Siping City, the length of D ', this workpiece 4 can be waited to be divided into after the more plane, repeat above-mentioned steps in regular turn, just it is more polygonal to make this workpiece 4 become the limit number, and this workpiece 4 is in present embodiment, its preferable limit number is two even-multiple limit type, for example two four times of limit numbers are eight limit types, and six times of limit numbers of two are twelve edge type or the like.
In addition, be noted that, these surfaces mentioned in the present embodiment and the English number of drawing that indicates, it mainly is the process that is configured as polygonal body for this workpiece 4 that clearly demonstrates column type, do not limit these interplanar generation order and relative positions of each symmetry, therefore, present embodiment is done explanation with this workpiece 4 of eight limit types, and the kenel of non-limiting polygonal body, such as polygonal body such as four limit types, hexagonal, eight limit types, odd plots of land that can be cultivated type all belongs to polygonal category of the present invention.
See also Fig. 8～shown in Figure 13, be the present invention flow chart, stereogram and the action schematic diagram one～three of a preferred embodiment again, desire to be processed into when hexagonal when this workpiece 4, it carries out according to the following step:
(200) this workpiece is positioned over one first tool group inside, and with the first surface of this cutter in this work piece surface moulding symmetry.
At first these first storage tank, 13 inside of this first tool group 1 will be placed on this workpiece 4, at this moment, these workpiece 4 part bodies can expose to this first tool group 1, then process with these cutter 5 these workpieces 4 of contact, produce the first plane A, withdraw from this cutter 5 then and unclamp this first tool group 1, rotate this workpiece 4, make this first plane A be close proximity to the bottom of this first storage tank 13, so far, according to above-mentioned step, produce the first plane A ', the then parallel each other plane of symmetry between this first plane A, the A ' on these workpiece 4 surfaces again with this cutter 5.
(201) this workpiece is positioned over one the 3rd tool group inside, and with the second surface of this cutter in this work piece surface moulding symmetry.
(202) this workpiece is positioned over the 3rd tool group inside, and with the second surface of this cutter in this work piece surface moulding symmetry.
Then, continuous the 3rd storage tank 23 that this workpiece 4 is placed the 3rd tool group 3, then the outer wall of this workpiece 4 will be close proximity to these inclined sides 34 of the 3rd storage tank 33, then according to above-mentioned step, produce one second plane B with this cutter 5 on these workpiece 4 surfaces, rotate this workpiece 4 then in regular turn, produce one the 3rd plane C in this work piece surface in regular turn with this cutter 5, one second plane B ' and one the 3rd plane C ', at this moment, this workpiece 4 will become a hexagonal body, and the second plane B, the parallel each other plane of symmetry between the B ', and the 3rd plane C, the parallel each other plane of symmetry between the C '.
(203) according to required polygonal limit number, this workpiece is placed in these tool groups, make this workpiece become a polygonal body.
In above-mentioned steps (203), this workpiece 4 is configured as hexagonal body, if month make this workpiece 4 become more polygonal body, only need slightly for a change above-mentioned these first planes A, A ', the second plane B, B ' and the 3rd plane C, the length of C ', this workpiece 4 can be waited to be divided into after the more plane, repeat above-mentioned steps in regular turn, just it is more polygonal to make this workpiece 4 become the limit number, and this workpiece 4 is in present embodiment, its preferable limit number is two product times limit type, for example two three times of limit numbers are hexagonal, and five times of limit numbers of two are the odd plots of land that can be cultivated type, and seven times of limit numbers of two are odd plots of land that can be cultivated type or the like.
Only, the above person is preferred embodiment of the present invention only, is not to be used to limit scope of the invention process; Anyly have the knack of this skill person, change and modify not breaking away from the equalization of being done under spirit of the present invention and the scope, all should be covered by in the claim of the present invention.
In sum, a kind of axial processing method of the present invention, the invention with patent reaches the value to industry; The applicant whence is according to the regulation of Patent Law, the application of mentioning patent of invention to an ancient unit of weight office.
Claims (19)
1. an axial processing method is characterized in that, includes the tool group of duplicating, these tool groups are used to be connected to a default axial process equipment, and inside is used to accommodate a default workpiece, and this workpiece is axially processed with a default cutter, and its execution in step is:
This workpiece is positioned over one first tool group inside, and with one first plane of this cutter in this work piece surface moulding symmetry;
This workpiece is positioned over one second tool group inside, and with one second plane of this cutter in this work piece surface moulding symmetry;
This workpiece is positioned over one the 3rd tool group inside, and with one three plane of this cutter in this work piece surface moulding symmetry;
This workpiece is positioned over the 3rd tool group inside, and with Siping City face of this cutter in this work piece surface moulding symmetry;
According to required polygonal limit number, this workpiece is placed in these tool groups, make this workpiece become a polygonal body.
2. a kind of axial processing method as claimed in claim 1 is characterized in that, the polygonal limit number of this workpiece is the even-multiple limit type that is selected from four limit types, eight limit types, twelve edge type or two.
3. a kind of axial processing method as claimed in claim 1 is characterized in that:
This first tool group has two corresponding one first tool and one second tools, and be formed with between this first tool and this second tool can be to one first storage tank that is interlinked to the outside;
The second tool group has two corresponding one the 3rd tool and one the 4th tools, and be formed with between the 3rd tool and the 4th tool can be to one second storage tank that is interlinked to the outside;
The 3rd tool group has two corresponding one the 3rd tool and one the 3rd tools, and be formed with between the 5th tool and the 6th tool can be to one the 3rd storage tank that is interlinked to the outside, and is provided with an inclined side of symmetry in the 3rd storage tank two bottom sides.
4. a kind of axial processing method as claimed in claim 3 is characterized in that, the inner width of this second storage tank of this second tool group is this first storage tank less than this first tool group.
5. a kind of axial processing method as claimed in claim 3 is characterized in that, this first storage tank of this first tool group is accommodated this workpiece, makes this workpiece carry out first axial processing, produces this first plane of symmetry.
6. a kind of axial processing method as claimed in claim 5 is characterized in that, this second storage tank of this second tool group is accommodated this workpiece, makes this workpiece carry out follow-up axial processing, produces this second plane of symmetry.
7. a kind of axial processing method as claimed in claim 6 is characterized in that, the 3rd storage tank of the 3rd tool group is accommodated this workpiece, makes this workpiece carry out follow-up axial processing, produces the 3rd plane of symmetry.
8. a kind of axial processing method as claimed in claim 7 is characterized in that, this first storage tank of this first tool group is accommodated this workpiece, makes this workpiece carry out follow-up axial processing, produces this Siping City's face of symmetry.
9. a kind of axial processing method as claimed in claim 8 is characterized in that, this this workpiece has this first plane, this second plane, the 3rd plane and this Siping City's face, and these interplanars are equidistant length.
10. a kind of axial processing jig structure as claimed in claim 3 is characterized in that, this second storage tank inwall width of this second storage tank is that to equal these of this workpiece first interplanar apart from length.
11. a kind of axial processing jig structure as claimed in claim 7 is characterized in that these of this workpiece first plane or these second planes are to be held on these inclined sides of the 3rd storage tank.
12. an axial processing method is characterized in that, includes the tool group of duplicating, these tool groups are used to be connected to a default axial process equipment, and inside is used to accommodate a default workpiece, and this workpiece is axially processed with a default cutter, and its execution in step is:
This workpiece is positioned over one first tool group inside, and with one first plane of this cutter in this work piece surface moulding symmetry;
This workpiece is positioned over one the 3rd tool group inside, and with one second plane of this cutter in this work piece surface moulding symmetry;
This workpiece is positioned over the 3rd tool group inside, and with one three plane of this cutter in this work piece surface moulding symmetry;
According to required polygonal limit number, this workpiece is placed the inner group of the 3rd tool group, make this workpiece become a polygonal body.
13. a kind of axial processing method as claimed in claim 12 is characterized in that, the polygonal limit number of this workpiece is the product times limit type that is selected from hexagonal, odd plots of land that can be cultivated type, 14 limit types or two.
14. a kind of axial processing method as claimed in claim 12 is characterized in that:
This first tool group has two corresponding one first tool and one second tools, and be formed with between this first tool and this second tool can be to one first storage tank that is interlinked to the outside;
The 3rd tool group has two corresponding one the 3rd tool and one the 3rd tools, and be formed with between the 5th tool and the 6th tool can be to one the 3rd storage tank that is interlinked to the outside, and is provided with an inclined side of symmetry in the 3rd storage tank two bottom sides.
15. a kind of axial processing method as claimed in claim 14 is characterized in that, this first storage tank of this first tool group is accommodated this workpiece, makes this workpiece carry out first axial processing, produces this first plane of symmetry.
16. a kind of axial processing method as claimed in claim 15 is characterized in that, the 3rd storage tank of the 3rd tool group is accommodated this workpiece, makes this workpiece carry out follow-up axial processing, produces this second plane of symmetry.
17. a kind of axial processing method as claimed in claim 16 is characterized in that, the 3rd storage tank of the 3rd tool group is accommodated this workpiece, makes this workpiece carry out follow-up axial processing, produces the 3rd plane of symmetry.
18. a kind of axial processing method as claimed in claim 17 is characterized in that, this this workpiece has this first plane, this second plane and the 3rd plane, and these interplanars are equidistant length.
19. a kind of axial processing jig structure as claimed in claim 16 is characterized in that these of this workpiece first plane or these second planes are to be held on these inclined sides of the 3rd storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101325290A CN102189391A (en) | 2010-03-10 | 2010-03-10 | Axial machining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101325290A CN102189391A (en) | 2010-03-10 | 2010-03-10 | Axial machining method |
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| CN102189391A true CN102189391A (en) | 2011-09-21 |
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| CN2010101325290A Pending CN102189391A (en) | 2010-03-10 | 2010-03-10 | Axial machining method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1015762A (en) * | 1996-07-06 | 1998-01-20 | Nisshin Kogyo Kk | Polygon machining jig |
| CN1771104A (en) * | 2003-04-15 | 2006-05-10 | Tdy工业公司 | Antirotation tool holder and cutting insert |
| CN1788891A (en) * | 2005-12-20 | 2006-06-21 | 合肥工业大学 | Processing method and device for column-shaped polyhedron with polygonal cross-section |
| CN1935450A (en) * | 2005-09-21 | 2007-03-28 | F-工具国际股份有限公司 | Clamping device for clamping workpieces |
| CN100999054A (en) * | 2006-01-11 | 2007-07-18 | 鸿富锦精密工业（深圳）有限公司 | Round tool set and round method |
-
2010
- 2010-03-10 CN CN2010101325290A patent/CN102189391A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1015762A (en) * | 1996-07-06 | 1998-01-20 | Nisshin Kogyo Kk | Polygon machining jig |
| CN1771104A (en) * | 2003-04-15 | 2006-05-10 | Tdy工业公司 | Antirotation tool holder and cutting insert |
| US20060245837A1 (en) * | 2003-04-15 | 2006-11-02 | Jean-Luc Dufour | Antirotation tool holder and cutting insert |
| CN1935450A (en) * | 2005-09-21 | 2007-03-28 | F-工具国际股份有限公司 | Clamping device for clamping workpieces |
| CN1788891A (en) * | 2005-12-20 | 2006-06-21 | 合肥工业大学 | Processing method and device for column-shaped polyhedron with polygonal cross-section |
| CN100999054A (en) * | 2006-01-11 | 2007-07-18 | 鸿富锦精密工业（深圳）有限公司 | Round tool set and round method |
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Application publication date: 20110921 |