CN201287162Y - Punching male die with punching and extruding function - Google Patents
Punching male die with punching and extruding function Download PDFInfo
- Publication number
- CN201287162Y CN201287162Y CNU2008201601138U CN200820160113U CN201287162Y CN 201287162 Y CN201287162 Y CN 201287162Y CN U2008201601138 U CNU2008201601138 U CN U2008201601138U CN 200820160113 U CN200820160113 U CN 200820160113U CN 201287162 Y CN201287162 Y CN 201287162Y
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- punching
- stamping
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- piercing
- punch
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Abstract
The utility model discloses a piercing punch with punching and squeezing functions. The piercing punch comprises a punch; the punch comprises adjacent punching sections, a transition section and a squeezing section, wherein the punching sections are matched with a pass; the squeezing section is slightly greater than the pass; and the transition section is connected between the punching section and the squeezing section and takes a conical surface for transition. The utility model not only ensures that the stamping process requirements of the link plate are met, but also eliminates series problems arising from ordinary punching and the secondary recondition; the characteristics and the key technical indexes of the shear planes of the obtained punching parts are superior to those of precision piercing technology; and compared with the one-step punching process, the stamping-extrusion technology ensures that the fatigue strength limit is increased by more than 38 percent. After flow piercing is performed on the link plate, the width of the euphotic belt at the fracture is more than 90 percent larger than that of the plates, the shapes are uniform and fine. Therefore, a crack resulting from fatigue damage needs more energy to extend, and the fatigue strength limit is increased, thereby achieving the purpose of prolonging the service life of the link chain.
Description
Technical field:
The utility model relates generally to a kind of cold punching die, relates in particular to a kind of piercing punch with punching, squeeze function.
Background technology:
The metallic plate punching process technology is widely used in each industrial departments such as automobile, aircraft, electrical equipment, instrument.Its feature has: the production efficiency height, production cost is low, dimensionally stable interchangeability is good, can obtain the unmanageable complicated shape part of other processing method.One of strength member on the chain: the typical process technology of carrier bar is generally blanking, and---punching---two dashed, and the surface quality of chain plate hole has influence on the fatigue strength of chain, is determining the service life of chain.Microanalysis for fracture shows that the life-span in fatigue crack initiation stage accounts for more than 90% of whole fatigue life, and the life-span in crack initiation stage depends primarily on the link plate hole surface quality.
The utility model content:
The utility model purpose is exactly for improving the bore area quality, make the chain plate hole produce compression on every side, can improving a kind of piercing punch with punching, squeeze function of carrier bar fatigue strength.
The utility model is achieved through the following technical solutions:
The utility model is a kind of piercing punch with punching, squeeze function, comprise drift, it is characterized in that described drift is made up of the stamping-out section, changeover portion, the extruded segment that adjoin each other, stamping-out section and pass coupling, extruded segment is slightly larger than pass, described changeover portion is connected between stamping-out section and the extruded segment, is conical surface transition.
Described piercing punch with punching, squeeze function, the monolateral amount of compression that it is characterized in that described extruded segment is for exceeding pass 0.05～0.1mm.
When on ordinary press, adopting the utility model impact extrusion punch that sheet metal is carried out punching, can on a station, realize punching, endoporus extruding simultaneously, push internal hole dimension finishing.This impact extrusion punch only needs ordinary press to realize.The stamping-out endoporus of carrier bar can reach IT6～8 through extruding finishing back size and form accuracy, and surface roughness can reach Ra=0.4～1.6, and working (machining) efficiency is the twice of common stamping+renovation process efficient.
Working position of the present utility model comprises two parts: the stamping-out section of piercing punch is punch and first working portion that sheet material at first contacts, and is the common stamping district; Extruded segment is the second portion of punch, is crush zone, and required size, shape and fineness are strengthened and formed in the extruding that is used for inner edge.Use the utility model can realize that one step of sheet material dashes, squeezes processing.The size of stamping-out part has determined the blade clearance, and reasonably the blade clearance is influenced by material property and sheet metal thickness, and it determines that method sees various " stamping technology handbook and standards " blade clearance JB/z 271-86 ".Punch was pressed into the degree of depth of sheet material when the length of stamping-out section should tear-strap occur greater than the plate stamping endoporus, and determining of concrete numerical value can be with reference to the various handbook standards of sheet material stamping-out.Changeover portion between stamping-out section and the extruded segment is a trim part, and it is little conical surface transition (little tapering is generally 5～8 °), the smooth connection of orthodrome, surface roughness Ra=0.2～0.4.Extruded segment is of a size of the maximum limit of size of workpiece, and considering has the resilience surplus after the extruding, so the size of extruded segment is answered the corresponding surplus of putting, generally gets 1%～1.2% thickness of slab.The monolateral amount of compression of extruded segment is 0.05～0.1mm.Extruded segment must enter die when impact extrusion, so just can finish whole impact extrusion process.
The utility model has the advantages that:
The utility model has not only satisfied the Sheet Metal Forming Technology requirement of carrier bar, and a series of problems that the trimming of common stamping and secondary brings have been eliminated, the part that dashes that is obtained is cut the feature and the key technical indexes thereof of face and all is better than fine blanking technology, and impact extrusion technology improves fatigue strength limit more than 38% than one-off hole-piercing technology.After carrier bar squeezed the hole, fracture euphotic belt width was greater than more than 90% of sheet material, and shape is evenly fine and closely woven, so fatigue rupture needs more energy from the crack initiation to the expansion, and fatigue strength limit improves, and improves chain purpose in service life thereby reach.
Description of drawings:
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment:
A kind of piercing punch with punching, squeeze function, comprise drift, drift is made up of the stamping-out section 1 that adjoins each other, changeover portion 2, extruded segment 3, stamping-out section 1 and pass coupling, extruded segment 3 is slightly larger than pass, and the monolateral amount of compression of extruded segment 3 is for exceeding pass 0.05～0.1mm.Changeover portion 2 is connected between stamping-out section 1 and the extruded segment 3, is conical surface transition.
Claims (2)
1, a kind of piercing punch with punching, squeeze function, comprise drift, it is characterized in that described drift is made up of the stamping-out section, changeover portion, the extruded segment that adjoin each other, stamping-out section and pass coupling, extruded segment is slightly larger than pass, described changeover portion is connected between stamping-out section and the extruded segment, is conical surface transition.
2, the piercing punch with punching, squeeze function according to claim 1, the monolateral amount of compression that it is characterized in that described extruded segment is for exceeding pass 0.05～0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201601138U CN201287162Y (en) | 2008-09-26 | 2008-09-26 | Punching male die with punching and extruding function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201601138U CN201287162Y (en) | 2008-09-26 | 2008-09-26 | Punching male die with punching and extruding function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201287162Y true CN201287162Y (en) | 2009-08-12 |
Family
ID=40978833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201601138U Expired - Lifetime CN201287162Y (en) | 2008-09-26 | 2008-09-26 | Punching male die with punching and extruding function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201287162Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615129A (en) * | 2012-03-09 | 2012-08-01 | 中北大学 | Forming method of small-coefficient hole flanging on side wall of barrel with non-equal wall thickness |
| CN103480755A (en) * | 2012-06-14 | 2014-01-01 | 苏州工业园区高登威科技有限公司 | Repeated stamping and fixing method of workpiece |
| CN104372273A (en) * | 2014-09-18 | 2015-02-25 | 合肥金海康五金机械制造有限公司 | Soft base alloy high finish inner hole finishing strengthening method |
| CN104399803A (en) * | 2014-12-09 | 2015-03-11 | 益阳赫山链条制造有限公司 | Impact-extruding tool for machining chain plate hole |
| CN104492921A (en) * | 2014-09-28 | 2015-04-08 | 上海奥林汽车安全系统有限公司 | Punch for shaping pin holes |
| CN105983614A (en) * | 2016-06-28 | 2016-10-05 | 柳州市银兴车轮制造有限公司 | Mould for vehicle wheel spoke holes |
| CN105983613A (en) * | 2016-06-28 | 2016-10-05 | 柳州市银兴车轮制造有限公司 | Punching method for vehicle wheel spoke |
| CN108555120A (en) * | 2018-03-21 | 2018-09-21 | 东莞市锐嘉精密机械制造有限公司 | A kind of Combined impact casement |
| CN109500219A (en) * | 2018-12-18 | 2019-03-22 | 常州工利精机科技有限公司 | A kind of hole class blanking die and hole class blanking method |
| CN111922190A (en) * | 2020-07-30 | 2020-11-13 | 东风商用车有限公司 | Stamping die and prestress punching process thereof |
-
2008
- 2008-09-26 CN CNU2008201601138U patent/CN201287162Y/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615129A (en) * | 2012-03-09 | 2012-08-01 | 中北大学 | Forming method of small-coefficient hole flanging on side wall of barrel with non-equal wall thickness |
| CN102615129B (en) * | 2012-03-09 | 2014-10-01 | 中北大学 | Forming method of small-coefficient hole flanging on side wall of barrel with non-equal wall thickness |
| CN103480755A (en) * | 2012-06-14 | 2014-01-01 | 苏州工业园区高登威科技有限公司 | Repeated stamping and fixing method of workpiece |
| CN104372273A (en) * | 2014-09-18 | 2015-02-25 | 合肥金海康五金机械制造有限公司 | Soft base alloy high finish inner hole finishing strengthening method |
| CN104372273B (en) * | 2014-09-18 | 2016-08-17 | 安徽海凌精工科技有限公司 | A kind of finishing intensifying method of soft base alloy best bright finish endoporus |
| CN104492921A (en) * | 2014-09-28 | 2015-04-08 | 上海奥林汽车安全系统有限公司 | Punch for shaping pin holes |
| CN104399803B (en) * | 2014-12-09 | 2016-07-06 | 益阳赫山链条制造有限公司 | A kind of impact extrusion instrument of machining chain plate hole |
| CN104399803A (en) * | 2014-12-09 | 2015-03-11 | 益阳赫山链条制造有限公司 | Impact-extruding tool for machining chain plate hole |
| CN105983614A (en) * | 2016-06-28 | 2016-10-05 | 柳州市银兴车轮制造有限公司 | Mould for vehicle wheel spoke holes |
| CN105983613A (en) * | 2016-06-28 | 2016-10-05 | 柳州市银兴车轮制造有限公司 | Punching method for vehicle wheel spoke |
| CN108555120A (en) * | 2018-03-21 | 2018-09-21 | 东莞市锐嘉精密机械制造有限公司 | A kind of Combined impact casement |
| CN109500219A (en) * | 2018-12-18 | 2019-03-22 | 常州工利精机科技有限公司 | A kind of hole class blanking die and hole class blanking method |
| CN111922190A (en) * | 2020-07-30 | 2020-11-13 | 东风商用车有限公司 | Stamping die and prestress punching process thereof |
| CN111922190B (en) * | 2020-07-30 | 2021-07-06 | 东风商用车有限公司 | Stamping die and prestress punching process thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090812 |
|
| CX01 | Expiry of patent term |