CN101032728A - Technique of wedging pin and punching - Google Patents
Technique of wedging pin and punching Download PDFInfo
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- CN101032728A CN101032728A CN 200710061678 CN200710061678A CN101032728A CN 101032728 A CN101032728 A CN 101032728A CN 200710061678 CN200710061678 CN 200710061678 CN 200710061678 A CN200710061678 A CN 200710061678A CN 101032728 A CN101032728 A CN 101032728A
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- punching
- time
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- width
- hole
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Abstract
The present invention relates to process of punching hole in taper pin. The process of punching long hole in the conic surface of a taper pin includes two or more punching steps of hole width/thickness ratio greater than 0.4, as required in common hole punching process. The process can increase the service life of convex punch die to 5,000-10,000 times, over 100 time increased.
Description
Technical field
The present invention relates to a kind of technique of wedging pin and punching.
Background technology
The punching technology of workpiece all is that a punching press is finished at present, but when punching press punching width and punching thickness than less than 0.4 slotted hole the time, because the bending strength of piercing punch and stability are not enough, can make the piercing punch premature failure and damage, particularly on the taper seat of taper pin punching press punching width and punching thickness than less than 0.4 slotted hole the time, grow owing to piercing punch is thin, its bending strength and stability are not enough, make the piercing punch premature failure and damage, adopt one-off hole-piercing technology, the service life of piercing punch is very short, generally only can dash about 100.
Summary of the invention
Technical problem to be solved by this invention provides a kind of effective raising piercing punch service life, satisfies the technique of wedging pin and punching of wedging pin and punching requirement.
The present invention adopts following technical scheme:
The present invention adopts twice or twice above punching technology when the taper seat upper punch slotted hole of taper pin.
The present invention is when the taper seat upper punch slotted hole of taper pin, and the punching width when making punching each time compares greater than 0.4 with punching thickness.
Good effect of the present invention is as follows: the present invention is when the taper seat upper punch slotted hole of taper pin, adopt twice or twice above punching technology, punching width when making punching each time compares greater than 0.4 with punching thickness, satisfy the punching technology conditional request, improve the piercing punch purpose in service life to reach.The piercing punch of twice punching all reaches 5000-10000 spare service life, improves service life more than 100 times, has improved economic benefit of enterprises and social benefit.
Description of drawings
Accompanying drawing 1 is for adopting the taper pin structural representation of technology punching of the present invention
Accompanying drawing 2 is looked partial sectional view for the left side of accompanying drawing 1
Accompanying drawing 3 is the vertical view of accompanying drawing 1
Accompanying drawing 4 is a taper pin schematic diagram behind the employing technology one-off hole-piercing of the present invention
The specific embodiment
The technique of wedging pin and punching process is as follows:
Cold-heading molding, pre-punched hole (punching for the first time), punching for the second time, surface treatment, packing warehouse-in.
During wedging pin and punching, because the punching width and the punching degree of depth equal 0.25, do not satisfy the punching technology condition, so adopted punching technology twice, make punching operation each time all satisfy the punching technology condition, described slotted hole is that the ratio of width b in the length L of finger-hole and hole is greater than 1.
Punching for the first time is a pre-punched hole, elder generation is in the long blind hole of taper seat upper punch of taper pin, punching degree of depth h, punching width b and punching degree of depth h are compared greater than 0.4, satisfied the requirement of punching technology condition, owing to adopt twice punching, the degree of depth of punching for the first time is little, shortened the length of piercing punch working position, can improve the condition of work of piercing punch, because piercing punch working face (bottom surface) is plane or the curved surface of making other shapes that help next punching press during punching for the first time, for advantage has been created in punching next time.During punching for the second time, if punching width b and residue thickness of workpiece h down than greater than 0.4, get final product and finish technique of wedging pin and punching for twice, if the thickness of workpiece h ratio under punching width b and the residue is less than 0.4, for the second time go back the communications centre blind hole, till satisfying the punching technology condition.
Embodiment 1:
Wedging pin and punching requires punching width b
1=4.2mm, punching degree of depth h
1=16mm, first pre-punched hole for the first time, punching degree of depth h
11=6.5mm, then for the first time punching width and punching depth ratio b
1/ h
11=0.646, satisfy the punching technology condition.
Punching for the second time, punching degree of depth h
12=9.5mm, then for the second time punching width and punching depth ratio b
1/ h
12=0.442, the punching technology condition is also satisfied in punching for the second time, so wedging pin and punching is finished in twice punching.
Embodiment 2:
Punching width b
2=4.0mm, punching degree of depth h
2=15.8mm, first pre-punched hole for the first time, punching degree of depth h
11=6.8mm, then for the first time punching width and punching depth ratio b
2/ h
21=0.588, satisfy the punching technology condition.
Punching for the second time, punching degree of depth h
22=9mm, then for the second time punching width and punching depth ratio b
2/ h
22=0.444, the punching technology condition is also satisfied in punching for the second time, so wedging pin and punching is finished in twice punching.
Embodiment 3:
Punching width b
3=3.8mm, punching degree of depth h
3=15.5mm, first pre-punched hole for the first time, punching degree of depth h
31=6.8mm, then for the first time punching width and punching depth ratio b
3/ h
31=0.559, satisfy the punching technology condition.
Punching for the second time, punching degree of depth h
32=8.7mm, then for the second time punching width and punching depth ratio b
3/ h
32=0.436, the punching technology condition is also satisfied in punching for the second time, so wedging pin and punching is finished in twice punching.
Claims (2)
1, a kind of technique of wedging pin and punching is characterized in that when the taper seat upper punch slotted hole of taper pin, adopts twice or twice above punching technology.
2, a kind of technique of wedging pin and punching according to claim 1 is characterized in that when the taper seat upper punch slotted hole of taper pin, and the punching width when making punching each time compares greater than 0.4 with punching thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710061678 CN101032728A (en) | 2007-04-06 | 2007-04-06 | Technique of wedging pin and punching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710061678 CN101032728A (en) | 2007-04-06 | 2007-04-06 | Technique of wedging pin and punching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101032728A true CN101032728A (en) | 2007-09-12 |
Family
ID=38729584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710061678 Pending CN101032728A (en) | 2007-04-06 | 2007-04-06 | Technique of wedging pin and punching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101032728A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102825129A (en) * | 2012-09-06 | 2012-12-19 | 宁波刚发实业有限公司 | Processing method of radial rectangular hole in pin and special die thereof |
| CN103143620A (en) * | 2013-04-03 | 2013-06-12 | 江西江铃底盘股份有限公司 | Rear axle regulating nut punching die and punching process |
| CN103495644A (en) * | 2013-08-26 | 2014-01-08 | 格林精密部件(苏州)有限公司 | Method and equipment for machining automobile steering pump motor shaft stepped hole |
| CN110252880A (en) * | 2019-07-29 | 2019-09-20 | 范东海 | A kind of building template taper pin continuous punching device |
-
2007
- 2007-04-06 CN CN 200710061678 patent/CN101032728A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102825129A (en) * | 2012-09-06 | 2012-12-19 | 宁波刚发实业有限公司 | Processing method of radial rectangular hole in pin and special die thereof |
| CN102825129B (en) * | 2012-09-06 | 2014-07-09 | 宁波刚发实业有限公司 | Processing method of radial rectangular hole in pin and special die thereof |
| CN103143620A (en) * | 2013-04-03 | 2013-06-12 | 江西江铃底盘股份有限公司 | Rear axle regulating nut punching die and punching process |
| CN103143620B (en) * | 2013-04-03 | 2015-03-25 | 江西江铃底盘股份有限公司 | Rear axle regulating nut punching die and punching process |
| CN103495644A (en) * | 2013-08-26 | 2014-01-08 | 格林精密部件(苏州)有限公司 | Method and equipment for machining automobile steering pump motor shaft stepped hole |
| CN103495644B (en) * | 2013-08-26 | 2015-08-19 | 格林精密部件(苏州)有限公司 | Steering pump of automobile motor shaft stepped hole processing method and process equipment |
| CN110252880A (en) * | 2019-07-29 | 2019-09-20 | 范东海 | A kind of building template taper pin continuous punching device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20070912 |