CN101837426B - Continuous punching blank forming method for chain roller of chain - Google Patents
Continuous punching blank forming method for chain roller of chain Download PDFInfo
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- CN101837426B CN101837426B CN 200910126897 CN200910126897A CN101837426B CN 101837426 B CN101837426 B CN 101837426B CN 200910126897 CN200910126897 CN 200910126897 CN 200910126897 A CN200910126897 A CN 200910126897A CN 101837426 B CN101837426 B CN 101837426B
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- chain
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- groove
- punching press
- chain roller
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Abstract
The invention discloses a continuous punching blank forming method for a chain roller of a chain, a blank block of the chain roller comprises a first surface and a second surface, and the method comprises the following steps: a first chamfer groove is punched on the first surface; a second chamfer groove is continuously punched on the first chamfer groove, and a right angled groove is punched on the second surface; the first chamfer groove is punched to a second right angled groove; third right angled grooves are punched on the first surface and the second surface respectively, and then after blank punching of the first time, a through hole which is provided with first chamfer surfaces at two ends respectively is formed; the first chamfer surfaces at the two ends of the first through hole are squeezed towards inside the first through hole, thus forming a step hole; and after blank punching of the second time, a second through hole which is provided with a second chamfer surface is formed. The method can solve the problems of having oversize chamfer surfaces at the two ends of a conventional chain roller of the chain, being easy to cause wear, shortening the service life of a chain pin bush, having too large deformation when in operation, being difficult to align when switching a fluted disc up and down and the like. The invention also discloses another continuous punching blank forming method for the chain roller of the chain.
Description
Technical field
The invention relates to a kind of continuous punching blank forming method of chain roller of chain, comprise a kind of process by continuous punching blank, mold the chain roller of chain of a tool through hole, and the fillet surface height of this through hole accounts for 0% to 5% of via depth size.
Background technology
As shown in Figure 8, the continuous punching blank forming method of the chain roller of chain of commonly using, its chain roller embryo piece a1 is divided into first surface a2 and second a3, and step is:
A. for the first time punching press stamps out the first chamfer groove a4 with first surface a2;
B. for the second time punching press stamps out second a chamfer groove a5 greater than the first chamfer groove a4 with first surface a2, and second a3 is stamped out the first right angle groove a6;
C. for the third time punching press strikes out the second right angle groove a7 with the first chamfer groove a4 of first surface a2;
D. the 4th punching press strikes out the 3rd right angle groove a8 with the second right angle groove a7 of first surface a2, and the first right angle groove a6 of second a3 strikes out the 3rd right angle groove a8;
E. the 5th punching press respectively strikes out the groove a9 of class with the 3rd right angle groove a8 of first surface a2 and second a3;
F. the 6th punching press, and via rushing for the first time embryo, and it is outside that the inwall between the two groove a9 of class is released chain roller embryo piece a1, and moulding has the chain roller of chain b of through hole b1.
And the chain roller of chain b that makes with the method for forming institute punching press of commonly using, the height of the fillet surface b2 at its through hole b1 two ends respectively accounts for 15% of its through hole b1 depth dimensions, and with reference among the figure 7 shown in the step F, namely the straight line portion in the through hole b1 is 70%.
As shown in Figure 9, general speed changing bicycle, its chain c is because need to adjust speed change, therefore chain c can produce torsional deformation in the process, especially the chain pin bush(ing) d among the figure takes out the type made from the inner chain sheet c1 one of chain c, in conjunction with the time chain pin bush(ing) d, by two inner chain sheet c1 each formed according to half, become chain c in conjunction with Component compositions such as outer chain sheet c2 again.Its shortcoming is as follows:
(1) easily distortion; When chain c was subject to large torsion, two inner chain sheet c1 easily were out of shape;
(2) service life is low; Because the straight line portion of the inner via hole b1 of the chain roller of chain b that commonly uses only 70%, so and the contact area of chain pin bush(ing) d fewer, easily abrasion cause reduce service life;
(3) gear shifting operation has some setbacks; The easier left and right deviation of chain c is not easy contraposition during use when switching fluted disc up and down, and gear shifting operation has some setbacks, and takes off sometimes chain, and is very inconvenient in the use.
In view of this, the inventor furthers investigate for the forming method of present chain roller of chain, and this case produces thus.
Summary of the invention
The object of the present invention is to provide a kind of continuous punching blank forming method of chain roller of chain, it can solve oversize, the easy generation abrasion of the fillet surface of commonly using the chain roller of chain two ends, shorten the service life of chain pin bush(ing), during operation deflection too greatly, the problem such as easy fitted not when switching fluted disc up and down.
In order to reach above-mentioned purpose, solution of the present invention is:
A kind of continuous punching blank forming method of chain roller of chain, its chain roller embryo piece are divided into first surface and second, and its method step is: for the first time punching press of A. stamps out the first chamfer groove with chain roller embryo piece first surface; B. for the second time punching press with the continuous punching press of the first chamfer groove of first surface, and stamps out second chamfer groove greater than the first chamfer groove, and the second face is stamped out the first right angle groove; C. for the third time punching press strikes out the second right angle groove with the first chamfer groove of first surface; D. the 4th punching press stamps out one the 3rd right angle groove separately with first surface and the second face, through rushing for the first time embryo, the partition between 2 the 3rd right angle grooves released outside the chain roller embryo piece, and formed the first through hole that two ends respectively have the first fillet surface again; E. the 5th punching press forms a class hole with first fillet surface at the first through hole two ends to the inner extruding of the first through hole; Follow-uply also comprise the steps: the 6th punching press of F., and through rushing for the second time embryo, and the unnecessary thickness in class hole is released outside the chain roller embryo piece, form the second through hole with second fillet surface, and the height of this second fillet surface is the chain roller of chain that accounts for the second via depth size 0% to 5%.
The height of above-mentioned the first fillet surface is greater than the height of the second fillet surface, and the diameter of the second through hole is greater than the diameter of the first through hole.
Among the above-mentioned steps F, during the 6th punching press, utilize the backhaul of diel on that waste material unnecessary in the second through hole is struck off.
A kind of continuous punching blank forming method of chain roller of chain, its chain roller embryo piece are divided into first surface and second, and its method step is: for the first time punching press of A. stamps out the first chamfer groove with first surface; B. for the second time punching press with the continuous punching press of the first chamfer groove of first surface, and stamps out second chamfer groove greater than the first chamfer groove, and the second face is stamped out the first right angle groove; C. for the third time punching press strikes out the second right angle groove with the first chamfer groove of first surface; D. the 4th punching press stamps out the 3rd right angle groove separately with first surface and the second face; E. the 5th punching press through rushing for the first time embryo, released the partition between 2 the 3rd right angle grooves outside the chain roller embryo piece, and formed the first through hole that two ends have the first fillet surface again; F. the 6th punching press forms a class hole with the fillet surface at the first through hole two ends to the inner extruding of the first through hole; Follow-uply also comprise the steps: the 7th punching press of G., and through rushing for the second time embryo, and the unnecessary thickness in class hole is released outside the chain roller embryo piece, form the second through hole with second fillet surface, and this second fillet surface accounts for the chain roller of chain of the second via depth size 0% to 5%.
The height of above-mentioned the first fillet surface is greater than the height of the second fillet surface, and the diameter of the second through hole is greater than the diameter of the first through hole.
Among the above-mentioned steps G, during the 7th punching press, utilize the backhaul of diel on that waste material unnecessary in the second through hole is struck off.
After adopting said structure, beneficial effect of the present invention is:
(1) chain roller of chain of institute of the present invention moulding, the fillet surface at its through hole two ends respectively accounts for 0% to 5% of via depth size, therefore its area that coats the chain pin bush(ing) is larger, when being used in speed changing bicycle, the torsional deformation amount of its chain when adjusting speed change falls sharply, chain is difficult for left and right deviation when operation, and the contraposition when therefore switching fluted disc up and down is smooth and easy, and is more convenient in the use;
(2) straight line portion in the chain roller of chain of institute of the present invention moulding, its through hole accounts for 95% to 100%, so therefore increase relative with the contact area of chain pin bush(ing) be not easy the generation abrasion, and then the service life that can improve chain.
Description of drawings
Fig. 1 is flow chart (A to the F) step of the present invention's the first implementation method;
Fig. 2 is the cutaway view of the made chain roller of chain of the present invention's the first implementation method;
Fig. 3 is the schematic diagram that the present invention is combined in the Chain pin lining;
Fig. 4 is another schematic diagram that the present invention is combined in the Chain pin lining;
Fig. 5 is that the invention process is at chain and the deformation state schematic diagram thereof of speed changing bicycle;
Fig. 6 is flow chart (A to the G) step of the present invention's the second implementation method;
Fig. 7 is the cutaway view of the made chain roller of chain of the present invention's the second implementation method;
Fig. 8 is the forming method (A to F step) of the chain roller of chain commonly used;
Fig. 9 is the schematic diagram that the chain roller of chain commonly used is incorporated into the Chain pin lining.
The main element symbol description
12 second of 1 chain roller embryo piece, 11 first surfaces
13 first chamfer groove 13a the second chamfer groove, 14 first right angle grooves
14a the second right angle groove 14b the 3rd right angle groove 15 first fillet surfaces
15a the second fillet surface 16 first through hole 16a the second through hole
17 class holes, 18 chain roller of chain, 2 chain pin bush(ing)s
2A chain pin bush(ing) 3 chains 32 outer chain sheets
31 inner chain sheet 3A chains, 4 fluted discs
52 second of 5 chain roller embryo pieces, 51 first surfaces
53 first chamfer groove 53a the second chamfer groove, 54 first right angle grooves
54a the second right angle groove 54b the 3rd right angle groove 55 first fillet surfaces
55a the second fillet surface 56 first through hole 56a the second through hole
57 class holes, 58 chain roller of chain a1 chain roller embryo pieces
Second a4 the first chamfer groove of a2 first surface a3
A5 the second chamfer groove a6 the first right angle groove a7 the second right angle groove
A8 the 3rd groove b of right angle groove a9 class chain roller of chain
B1 through hole b2 fillet surface c chain
C1 inner chain sheet c2 outer chain sheet d chain pin bush(ing)
The specific embodiment
With reference to Figure 1 and Figure 2, the schematic diagram of continuous punching blank forming method first implementation method of chain roller of chain of the present invention, its chain roller embryo piece 1 are divided into first surface 11 and second 12, and the step of the first implementation method is:
A. for the first time punching press stamps out the first chamfer groove 13 with first surface 11;
B. for the second time punching press with the first chamfer groove 13 continuation punching presses of first surface 11, and stamps out second a chamfer groove 13a greater than the first chamfer groove 13, and stamps out the first right angle groove 14 with second 12;
C. for the third time punching press strikes out the second right angle groove 14a with the first chamfer groove 13 of first surface 11;
D. the 4th punching press, first surface 11 and second 12 are stamped out the 3rd right angle groove 14b separately, and through rushing for the first time embryo, the partition between 2 the 3rd right angle groove 14b is released outside the chain roller embryo piece 1, and formed the first through hole 16 that two ends have the first fillet surface 15 simultaneously;
E. the 5th punching press forms class holes 17 with first fillet surface 15 at the first through hole 16 two ends to the 16 inner extruding of the first through hole;
F. the 6th punching press, and through rushing for the second time embryo, and the unnecessary thickness in class hole 17 is released outside the chain roller embryo piece 1, formation has the second through hole 16a of the second fillet surface 15a, and the height of the second fillet surface 15a accounts for the chain roller of chain 18 (as shown in Figure 2) of the second through hole 16a depth dimensions 0% to 5%.
In the aforementioned chain roller of chain of making 18, the height of the first fillet surface 15 is greater than the height of the second fillet surface 15a, and the diameter of the second through hole 16a is greater than the diameter of the first through hole 16.
Six punching presses of aforementioned punching press to the first time all are upper diel and the lower diels that are provided with separately, and different, its shape repeats no more its shape as shown in fig. 1 according to the shape of each punching press program institute moulding.
During above-mentioned the 6th punching press, backhaul of diel can be struck off unnecessary waste material in the second through hole 16a on it, makes perpendicularity and precision in the second through hole 16a better.
As shown in Fig. 3 and Fig. 4, because the straight line portion in the second through hole 16a of the chain roller of chain of moulding accounts for 95% to 100% (with reference to shown in Figure 2), so with chain pin bush(ing) 2, the contact area of chain pin bush(ing) 2A increases relatively, therefore be not easy to produce abrasion, and then the service life that can improve chain 3, and because of its coating chain pin bush(ing) 2, the area of chain pin bush(ing) 2A is larger, be used in speed changing bicycle, especially embodiment shown in Figure 3, wherein chain pin bush(ing) 2 is to take out the type made from inner chain sheet 31 one of chain 3, in conjunction with the time chain pin bush(ing) 2, respectively formed according to half by two inner chain sheets 31, become chain 3 in conjunction with outer chain sheet 32 Component compositions such as grade again, when chain 3 is subject to larger torsion, easily be out of shape, when therefore its coating area was large, chain pin bush(ing) 2 just can not produce distortion; Moreover, as shown in Figure 5, be that the invention process is in the chain 3A of speed changing bicycle and the schematic diagram of distortion thereof, the torsional deformation amount of its chain 3 when adjusting speed change falls sharply, chain 3 is difficult for left and right deviation when operation, and the contraposition when therefore switching fluted disc 4 up and down is smooth and easy, and is more convenient in the use.
Seeing also shown in Figure 6ly, is the second implementation method of the present invention, and its chain roller embryo piece 5 is divided into first surface 51 and second 52, and method step is:
A. for the first time punching press stamps out the first chamfer groove 53 with first surface 51;
B. for the second time punching press with the first chamfer groove 53 continuous punching presses of first surface 51, and stamps out second a chamfer groove 53a greater than the first chamfer groove 53, and stamps out the first right angle groove 54 with second 52;
C. for the third time punching press strikes out the second right angle groove 54a with the first chamfer groove 53 of first surface 51;
D. the 4th punching press stamps out the 3rd right angle groove 54b separately with first surface 51 and second 52;
E. the 5th punching press through rushing for the first time embryo, released the partition between 2 the 3rd right angle groove 54b outside the chain roller embryo piece 5, and formed the first through hole 56 that two ends have the first fillet surface 55 again;
F. the 6th punching press forms class holes 57 with first fillet surface 55 at two ends to the 56 inner extruding of the first through hole;
G. the 7th punching press, and through rushing for the second time embryo, and the unnecessary thickness in class hole 57 is released outside the chain roller embryo piece 5, form chain roller of chain 58, it has the second through hole 56a of the second fillet surface 55a, and the height of this second fillet surface 55a accounts for 0% to 5% (as shown in Figure 7) of the second through hole 56a depth dimensions.
Seven punching presses of aforementioned punching press to the first time are upper diel and the lower diels that is provided with separately, and different, its shape repeats no more its shape as shown in Figure 6 according to the shape of each punching press program institute moulding.
During above-mentioned the 7th punching press, unnecessary waste material in the second through hole 56a is struck off in backhaul of diel on it, makes perpendicularity and precision in the second through hole 56a better.
In addition, the chain roller of chain 18 of the first cited herein and the moulding of second method institute, 58 shape are identical, and its behaviour in service and advantage are also identical, therefore repeat no more.
Previous embodiment only is illustration of the present invention, can not limit protection scope of the present invention with this, every technological thought that proposes according to the present invention, and any change of doing on the technical scheme basis all falls within the protection domain of the present invention.
Claims (3)
1. the continuous punching blank forming method of a chain roller of chain, its chain roller embryo piece are divided into first surface and second, and its method step is:
A. for the first time punching press stamps out the first chamfer groove with chain roller embryo piece first surface;
B. for the second time punching press with the continuous punching press of the first chamfer groove of first surface, and stamps out second chamfer groove greater than the first chamfer groove, and the second face is stamped out the first right angle groove;
C. for the third time punching press strikes out the second right angle groove with the first chamfer groove of first surface;
D. the 4th punching press stamps out one the 3rd right angle groove separately with first surface and the second face, through rushing for the first time embryo, the partition between 2 the 3rd right angle grooves released outside the chain roller embryo piece, and formed the first through hole that two ends respectively have the first fillet surface again;
E. the 5th punching press forms a class hole with first fillet surface at the first through hole two ends to the inner extruding of the first through hole;
It is characterized in that follow-uply also comprising the steps:
F. the 6th punching press, and rush embryo through for the second time, and the unnecessary thickness in class hole is released outside the chain roller embryo piece, form the second through hole with second fillet surface, and the height of this second fillet surface is the chain roller of chain that accounts for the second via depth size 0% to 5%.
2. the continuous punching blank forming method of chain roller of chain as claimed in claim 1, it is characterized in that: the height of described the first fillet surface is greater than the height of the second fillet surface, and the diameter of the second through hole is greater than the diameter of the first through hole.
3. the continuous punching blank forming method of chain roller of chain as claimed in claim 1 is characterized in that: in the described step F, during the 6th punching press, utilize the backhaul of diel on that waste material unnecessary in the second through hole is struck off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910126897 CN101837426B (en) | 2009-03-18 | 2009-03-18 | Continuous punching blank forming method for chain roller of chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910126897 CN101837426B (en) | 2009-03-18 | 2009-03-18 | Continuous punching blank forming method for chain roller of chain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101837426A CN101837426A (en) | 2010-09-22 |
| CN101837426B true CN101837426B (en) | 2013-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910126897 Expired - Fee Related CN101837426B (en) | 2009-03-18 | 2009-03-18 | Continuous punching blank forming method for chain roller of chain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101837426B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127745B (en) * | 2015-09-28 | 2017-07-14 | 临汾市新晋汾焦铁设备制造有限公司 | Pig machine chain machining tool and processing technology |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1850423A (en) * | 2006-04-24 | 2006-10-25 | 安徽宁国中鼎金属制品有限公司 | Automobile bushing multi-station cold-upsetting shaping method |
| TW200730271A (en) * | 2006-02-09 | 2007-08-16 | Anchor Fasteners Ind Co Ltd | Forming method of hollow fastening member |
| CN101172325A (en) * | 2006-10-31 | 2008-05-07 | 吴春茶 | Method for producing angle pin casing tube |
| CN101219452A (en) * | 2007-01-11 | 2008-07-16 | 谢其竹 | Process for manufacturing seamless bush of chain |
-
2009
- 2009-03-18 CN CN 200910126897 patent/CN101837426B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200730271A (en) * | 2006-02-09 | 2007-08-16 | Anchor Fasteners Ind Co Ltd | Forming method of hollow fastening member |
| CN1850423A (en) * | 2006-04-24 | 2006-10-25 | 安徽宁国中鼎金属制品有限公司 | Automobile bushing multi-station cold-upsetting shaping method |
| CN101172325A (en) * | 2006-10-31 | 2008-05-07 | 吴春茶 | Method for producing angle pin casing tube |
| CN101219452A (en) * | 2007-01-11 | 2008-07-16 | 谢其竹 | Process for manufacturing seamless bush of chain |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101837426A (en) | 2010-09-22 |
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Granted publication date: 20130102 Termination date: 20140318 |