CN104971978A - Thinning and drawing tool - Google Patents
Thinning and drawing tool Download PDFInfo
- Publication number
- CN104971978A CN104971978A CN201510074212.9A CN201510074212A CN104971978A CN 104971978 A CN104971978 A CN 104971978A CN 201510074212 A CN201510074212 A CN 201510074212A CN 104971978 A CN104971978 A CN 104971978A
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- CN
- China
- Prior art keywords
- die
- punch
- thinning
- thinning drawing
- frock according
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention provides a thinning and drawing tool which comprises an upper template arranged on an equipment sliding block, and a lower template arranged on an equipment bottom plate. The upper template and the lower template are provided with a male die and female dies respectively, and the male die corresponds to the female dies. The female dies are arranged on the lower template through female die fixing seats. Center holes of the female die fixing seats are in a three-stage step-shaped structure which is gradually amplified from bottom to top. The female dies are arranged on upper step parts; middle step parts are used in cooperation with the male die for containing a product blank to be machined, and lower step parts are used for containing an ejector for pushing a machined product out. A transition-shaped structure with the inner diameter gradually becoming larger from the middle to the two end faces of each female die is formed on the inner wall of an inner hole of the corresponding female die. The thinning and drawing tool is stable in machining process, a mirror surface effect is achieved on a whole working face through strong extruding, the service life of the dies is long, the working efficiency is high, and the requirement for mass production can be met.
Description
Technical field
The invention belongs to stamping technology field, relate to a kind of device for thinning drawing.
Background technology
At present, in automobile engine, part belt pulley uses flat-belt drive (or the back side transmission of being with by PK in train), because it works under high rotating speed environment, in order to reduce vibration and the noise of engine, there is high requirement to its working surface, the circularity being mainly reflected in working surface self, the total run-out being mounted opposite hole, all require tighter allowance control relative to the perpendicularity of installed surface, fineness.
The demand of this product that the present invention relates to is more than 1,300,000/year, and therefore a kind of production technology of demand can adapt to produce in enormous quantities fast, can ensure tolerance again.Simultaneously along with automobile industry environmental protection, energy-saving and cost-reducing require deepen constantly, lightweight and non-chip removing machining are development trends.In conjunction with two kinds of demands, adopt the technique of thinning drawing, relative process for machining, not anti-dandruff in thinning drawing process, working (machining) efficiency is also obviously higher, can meet the quality requirement of product simultaneously.
Thinning deep-drawing technique technology main difficulty is: according to material Deep-drawing property, select suitable Reducing thickness, selects as far as possible little Reducing thickness while guaranteeing product quality; When Reducing thickness is larger, can produce a large amount of heats in drawing process, the surface of mould is very easily damaged, and affects product processing quality.Also there is no a kind of device being specially adapted to thinning drawing at present.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art and the thinning drawing frock that a kind of operating accuracy is high, be applicable to production in enormous quantities is provided.
The technical solution used in the present invention is: comprise the cope match-plate pattern being loaded on equipment slide block, the lower bolster being loaded on equipment bay; Cope match-plate pattern, lower bolster are respectively arranged with mutually corresponding punch, die; Described die is loaded on lower bolster through die holder; Described die holder centre bore is in the three grades of step-like structures amplified step by step from bottom to top, and die is loaded on the portion of topping bar, and middle stage portion coordinates with punch and is used for accommodating processed product blank, is loaded on stepped down part for the backing-out punch released by product after processing; Described die endoporus inwall is the transition shape structure that internal diameter becomes large gradually along middle part respectively to die both ends of the surface.
Described punch is loaded on cope match-plate pattern through upper padding plate.
Punch Connection Block is housed between described punch and upper padding plate.
Described punch Connection Block, punch, backing-out punch are provided with the through drainage channel for cooling mutually, and in the course of work, inside has recirculated water to flow, and take away the partial heat that process produces, and are frock cooling.
Described die inwall is working face, the cross sectional shape of this working face comprises the two sections of oblique lines being positioned at one section of middle straight line, being symmetrically distributed in two sections of circular arcs of straight line both sides, connecting straight line and circular arc, in process, make blank progressively thinning, with the heat produced in reduction process.
Described die holder and die are tight interference fits.Die holder, except positioning function, also plays protection die and offsets the effect of expansive force, emphasis be die holder with die before gap, tension, excessively loose cooperation all can reduce the life-span of die, therefore adopt tight interference fits.
Lower bolster is provided with between described die holder and lower bolster.
Described backing-out punch is taken blame for others be in transmission connection through being run through lower bolster, the push rod of equipment bay and equipment.
Described die holder upper surface is provided with the pressing plate for compressing die.
Described punch, molding surface have carried out TD cure process.Described convex mould surface has TD hardened layer; Described molding surface has TD hardened layer.
The present invention is except upper and lower template, and other parts are all the revolving mebers according to product specification determination size.
It is high thus require that Reducing thickness is comparatively large, the production that mass simultaneous is larger that the present invention is specially adapted to quality requirement.Utilize the strong extruding of thinning drawing to make the whole working face of belt pulley reach the effect of minute surface, the circularity of self, linearity are all in and are close to desirable state.Production efficiency is high, also solves the not high defect of common drawing operating accuracy simultaneously, makes product quality obtain stable guarantee.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation of belt pulley (after common drawing).
Fig. 2 is the structural representation of belt pulley (after thinning drawing).
Fig. 3 is structural representation of the present invention.
Fig. 4 is working state schematic representation of the present invention.
Fig. 5 is die cross sectional shape schematic diagram of the present invention.
In figure, 1, equipment slide block, 2, equipment bay, 3, cope match-plate pattern, 4, lower bolster, 5, upper padding plate, 6, punch Connection Block, 7, punch, 8, die, 9, die holder, 10, lower bolster, 11, pressing plate, 12, backing-out punch, 13, push rod, 14, equipment takes blame for others, 15, product blank, 16, drainage channel, 17, belt pulley working face.
Detailed description of the invention
In Fig. 1, Fig. 2, because the belt pulley of the present invention's application is revolving meber, first plate blank is processed into biscuit, by calculating and test the thickness and diameter of determining biscuit.Then utilize common drawing that biscuit is processed into drum, finally utilize thinning drawing to be extruded by force by the blank working surface of common drawing, go out the effect of minute surface through the strong product work surface presentation extruded, thus reach the quality requirement of product.17 is belt pulley working face.
Theoretically, the Reducing thickness that product blank is thinning is larger, and product size and fineness ensure that ability is stronger.But thinning drawing is actually a kind of strong extruding, product work plane materiel material is redistributed through a large amount of flowing, and can produce a large amount of heats in process, Reducing thickness is larger, and the heat of generation is larger.High temperature can cause product surface material to be peeled off from parent, and mould forms built-up edge, serious damage product work surface; Built-up edge has very high hardness, also can pull mould.Strong extruding simultaneously also can produce very large expansive force to processing mold, and high temperature adds that expansion may cause mould to burst.In real work, determining Reducing thickness by calculating and simulated test, in order to ensure that working face reaches technical requirement, having selected relatively large Reducing thickness.
In Fig. 2, equipment slide block 1 and equipment bay 2 are equipped with cope match-plate pattern 3 and lower bolster 4 respectively, it is fixing that cope match-plate pattern 3 and lower bolster 4 are mainly used in equipment.
Upper cushion block 5, punch Connection Block 6, punch 7 are coupled to each other and are finally fixed on equipment slide block 1, the main effect of upper cushion block 5 is solid punch 7, the effect of punch Connection Block 6 is the length in order to reduce punch 7, saves the area of somewhat expensive material and high accuracy processing.Equipment slide block about 1 runs, and drives the descending finishing drawing action of punch 7, then rises and returns.
Die 8 and die holder 9, lower bolster 10 are coupled to each other, and are finally fixed on equipment bay 2.Die holder 9 and die 8 adopt tight interference fits to assemble.Die pressing plate 11 is fixed on die holder 9, is mainly compressed by die, and when avoiding drawing to terminate punch 7 backhaul, die 8 pulls up by material returned power; Backing-out punch 12 is positioned on lower bolster 10, relative die holder 9 can slide, push rod 13 is directly put into equipment through lower bolster 10 and lower bolster 4 and takes blame for others on 14, can be moved upward by equipment 14 drives of taking blame for others, after drawing terminates equipment slide block 1 backhaul, equipment is taken blame for others and 14 upwards to be ejected, and drives backing-out punch 12 to move upward, exited by the product blank 15 completing operation from die by push rod 13.
Punch Connection Block 6 and punch 7 inner band have the drainage channel 16 for cooling.
In Fig. 3, punch 7, die 8 gap are arranged by the Reducing thickness calculated, and be less than the thickness of product blank 15, punch 7 drives product blank 15 through die 8, progressively realizes working face thinning.Punch 7, die 8 are core components, it carries the violent friction of product material flowing in thinning drawing process, therefore it must have superpower case hardness, punch 7, die 8 surface enter to travel TD cure process, form TD hardened layer, make its surface reach nearly 80HRC, and its inner core hardness is not high, make it have good ductility, expand to its generation destruction to cushion in extrusion process.
In Fig. 4, die 8 inwall is working face, and the cross sectional shape of this working face comprises the two sections of oblique lines (S1, S2) being positioned at one section of middle straight line (L), being symmetrically distributed in two sections of circular arcs (A1, A2) of straight line both sides, connecting straight line and circular arc.In process product blank 15 first circular arc and oblique line portion thinning in advance, to reduce by a Reducing thickness, thus the heat produced in minimizing process.The setting of symmetric shape makes it use on two sides, to the further finishing in product work face simultaneously when returning after product blank completes processing, eliminates processing resilience.
Claims (10)
1. a thinning drawing frock, is characterized in that: comprise the cope match-plate pattern (3) being loaded on equipment slide block (1), the lower bolster (4) being loaded on equipment bay (2); Cope match-plate pattern (3), lower bolster (4) are respectively arranged with mutually corresponding punch (7), die (8);
Described die (8) is loaded on lower bolster (4) through die holder (9);
Described die holder (9) centre bore is in the three grades of step-like structures amplified step by step from bottom to top, die (8) is loaded on the portion of topping bar, middle stage portion coordinates with punch (7) and is used for accommodating processed product blank (15), is loaded on stepped down part for the backing-out punch (12) released by product after processing;
Described die (8) endoporus inwall is the transition shape structure that internal diameter becomes large gradually along middle part respectively to die both ends of the surface.
2. thinning drawing frock according to claim 1, is characterized in that: described punch (7) is loaded on cope match-plate pattern (3) through upper padding plate (5).
3. thinning drawing frock according to claim 2, is characterized in that: punch Connection Block (6) is housed between described punch (7) and upper padding plate (5).
4. thinning drawing frock according to claim 3, is characterized in that: described punch Connection Block (6), punch (7), backing-out punch (12) are provided with the through drainage channel (16) for cooling mutually.
5. thinning drawing frock according to claim 1, is characterized in that: the cross sectional shape of described die (8) inwall comprises the two sections of oblique lines (S) being positioned at one section of middle straight line (L), being symmetrically distributed in two sections of circular arcs (A) of straight line both sides, connecting straight line and circular arc.
6. thinning drawing frock according to claim 1, is characterized in that: described die holder (9) and die (8) are tight interference fits.
7. thinning drawing frock according to claim 1, is characterized in that: be provided with lower bolster (10) between described die holder (9) and lower bolster (4).
8. thinning drawing frock according to claim 1, is characterized in that: described backing-out punch (12) through running through lower bolster (4), push rod (13) and the equipment of equipment bay (2) take blame for others (14) be in transmission connection.
9. thinning drawing frock according to claim 1, is characterized in that: described die holder (9) upper surface is provided with the pressing plate (11) for compressing die (8).
10. thinning drawing frock according to claim 1, is characterized in that: there is TD hardened layer on described punch (7) surface; There is TD hardened layer on described die (8) surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510074212.9A CN104971978A (en) | 2015-02-12 | 2015-02-12 | Thinning and drawing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510074212.9A CN104971978A (en) | 2015-02-12 | 2015-02-12 | Thinning and drawing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104971978A true CN104971978A (en) | 2015-10-14 |
Family
ID=54269256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510074212.9A Pending CN104971978A (en) | 2015-02-12 | 2015-02-12 | Thinning and drawing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104971978A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105618583A (en) * | 2016-02-02 | 2016-06-01 | 苏州宝成汽车冲压有限公司 | Drawing concave die and method for drawing gear shift shaft sleeve through drawing concave die |
| CN106270188A (en) * | 2016-06-02 | 2017-01-04 | 东风襄阳旋压技术有限公司 | A kind of compound thinning drawing frock |
| CN106424358A (en) * | 2016-09-30 | 2017-02-22 | 东莞市骏信机电科技有限公司 | Stretching mold |
| CN110560621A (en) * | 2019-08-30 | 2019-12-13 | 宝鸡法士特齿轮有限责任公司 | Cooling punch structure |
| CN115178666A (en) * | 2022-09-14 | 2022-10-14 | 江苏华杰不锈钢制品有限公司 | Stainless steel plate stamping device |
| CN117463899A (en) * | 2023-12-27 | 2024-01-30 | 镇江先锋汽车零部件有限公司 | Mechanical feeding, thinning, stretching and precise forming system |
-
2015
- 2015-02-12 CN CN201510074212.9A patent/CN104971978A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105618583A (en) * | 2016-02-02 | 2016-06-01 | 苏州宝成汽车冲压有限公司 | Drawing concave die and method for drawing gear shift shaft sleeve through drawing concave die |
| CN106270188A (en) * | 2016-06-02 | 2017-01-04 | 东风襄阳旋压技术有限公司 | A kind of compound thinning drawing frock |
| CN106270188B (en) * | 2016-06-02 | 2018-03-27 | 东风襄阳旋压技术有限公司 | A kind of compound thinned drawing frock |
| CN106424358A (en) * | 2016-09-30 | 2017-02-22 | 东莞市骏信机电科技有限公司 | Stretching mold |
| CN110560621A (en) * | 2019-08-30 | 2019-12-13 | 宝鸡法士特齿轮有限责任公司 | Cooling punch structure |
| CN115178666A (en) * | 2022-09-14 | 2022-10-14 | 江苏华杰不锈钢制品有限公司 | Stainless steel plate stamping device |
| CN117463899A (en) * | 2023-12-27 | 2024-01-30 | 镇江先锋汽车零部件有限公司 | Mechanical feeding, thinning, stretching and precise forming system |
| CN117463899B (en) * | 2023-12-27 | 2024-03-29 | 镇江先锋汽车零部件有限公司 | Mechanical feeding, thinning, stretching and precise forming system |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151014 |
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| RJ01 | Rejection of invention patent application after publication |