CN102274892B - Stamping die and stamping method for hard metal alloy cutting blades - Google Patents
Stamping die and stamping method for hard metal alloy cutting blades Download PDFInfo
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- CN102274892B CN102274892B CN 201110159857 CN201110159857A CN102274892B CN 102274892 B CN102274892 B CN 102274892B CN 201110159857 CN201110159857 CN 201110159857 CN 201110159857 A CN201110159857 A CN 201110159857A CN 102274892 B CN102274892 B CN 102274892B
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Abstract
The invention relates to a stamping die for hard metal alloy cutting blades. The stamping die is characterized in that a die hole (3) is rectangular, the longitudinal size of the die hole (3) corresponds to the length (L) of a blank (50), the transversal size corresponds to the thickness (S) of the blank (50), and the stamping height corresponds to the width (t) of the blank (50); a working surface (10) of the blank (50) is formed upwards; the cross section of the die hole (3) is constant; the lower surface of an upper stamping head (101) of an upper die (100) is an inclined surface capable of being tightly attached to the working surface (10), and the cross section of a chamfered bulge corresponds to the blank (50) is arranged on the upper surface of a lower stamping head (201) of a lower die (200). According to the stamping die provided by the invention, the primary percent of pass of products is improved; the unit weight of a manufactured qualified product is 0.5-2g lighter than that of the product of the prior art, therefore a great amount of resources can be saved; and the manufacturing cycle of the dies is accelerated, the processing cost of the dies is reduced, and the production efficiency is improved.
Description
Technical field
The present invention relates to a kind of diel and process for stamping of carbide chip, particularly relate to diel and the process for stamping of the carbide chip of similar D2 type shape of product.
Background technology
D2 type product mainly for the manufacture of face and side cutter, T-slot milling cutter and floating boring tool etc., is widely used in industry.Shown in Figure 1A and Figure 1B, the cross section of D2 type product is at right angles trapezoidal generally, and what this was trapezoidal goes to the bottom, and namely the width dimensions of product is t; The height that this is trapezoidal, namely the gauge of product is S; The hypotenuse that this is trapezoidal, namely its working face 10 has one 14 ° relief angle α, between solder side 20 and the trapezoidal right-angle side one 0.8 * 45 ° chamfering C is arranged.The length dimension of product solder side 20 is L under perfect condition; The length dimension of the working face 10 of product is L1 under the perfect condition.
D2 type product adopted traditional mould (seeing Fig. 2 A and Fig. 2 B) to suppress production in the past.This traditional mould comprises the steel bushing 1 and the alloy core rod 2 that is embedded in the steel bushing 1 as die body.The central authorities of alloy core rod 2 are provided with patrix passage 5, product blank shaping area 4 and counterdie passage 3 from top to bottom successively.Counterdie passage 3 is formed by the line cutting; Product blank shaping area 4 comprises an inclined-plane corresponding to product working face 10, this inclined-plane and patrix passage 5 not only need the line cutting as first procedure, and need spark machined as second operation work, namely carry out the second operation work electric spark on the basis that the first procedure line cuts into passage 3 nibs and beat counterbore and process.
As shown in Figure 4, under the mould closure state, the upper punch 101 of mold 100 is engaged in the patrix passage 5, and the low punch 201 of bed die 200 is engaged in the counterdie passage 3, at the blank 50 of product blank shaping area 4 place's press-formed products.This blank 50 is laterally placed, and working face 10 is closely connected at product blank shaping area 4, and towards a side, and solder side 20 is towards an other side.
The cross section of patrix passage 5 is gone to the bottom corresponding to the product cross section; And the cross section of counterdie passage 3 is corresponding to the upper base of product cross section.The area of the cross section of patrix passage 5 is greater than the area of the cross section of counterdie passage 3.Therefore, when the compacting of product blank is produced, be difficult to guarantee that the density of product working face 10 is even, the green density of the product working face of producing 10 is less than the green density of solder side 20, behind high temperature sintering, the size of working face 10 is bigger than the dimensional contraction of solder side 20, causes the size of product length inconsistent, solder side 20 can reduce the product first-time qualification rate greatly to 0.3～0.6mm than working face 10.
Therefore, the traditional moulds design is difficult to the length dimension of control product when producing, and also relative complex of this Mold Making, needs to cut the Kong Houzai electric spark through first line and beats the counterbore two procedures, has lengthened process-cycle and cost of manufacture virtually.Its geometry makes difficult moulding and Mold Making complexity for this reason, needs to change its original mould design.
Summary of the invention
The purpose of this invention is to provide a kind of diel of carbide chip, it can improve the cost of manufacture of the formed precision of product blank, the process-cycle that shortens mould, reduction mould.
Another object of the present invention provides a kind of process for stamping of carbide chip, its can improve the product blank formed precision, reduce production costs.
For this reason, according to an aspect of the present invention, provide a kind of diel of carbide chip, this carbide chip is made by the rectangular trapezoidal column blank of cross section, and going to the bottom that this is trapezoidal is the width of blank; This trapezoidal height is the gauge of blank; This trapezoidal hypotenuse is working face, one 14 ° relief angle is arranged, between solder side and the trapezoidal right-angle side one 0.8 * 45 ° chamfering is arranged, described diel comprises mold, bed die, as the steel bushing of die body be embedded in alloy core rod in the steel bushing, the central authorities of alloy core rod are provided with nib, it is characterized in that, nib is the shape corresponding to the welding bottom surface of blank, the longitudinal size of nib is corresponding to the length of blank, and the lateral dimension of nib is corresponding to the thickness of blank, and the compacting of nib height is corresponding to the width of blank; The cross section of nib is constant, comprises the patrix channel section that can cooperate with the upper punch of mold and the profiled section of the counterdie channel section that can cooperate with the low punch of bed die and the product blank between patrix channel section and counterdie channel section; The lower surface of the upper punch of mold be can be closely connected with working face inclined surface, and the upper surface of the low punch of bed die is provided with the projection of the chamfering of the corresponding blank of cross section.
Preferably, going to the bottom of the cross section of blank is positioned at a side of nib; And upper base is positioned at an other side of nib.Preferably, the Mold Making constriction coefficient is 1.18～1.24.
According to another aspect of the present invention, provide a kind of process for stamping of carbide chip, this carbide chip is made by the rectangular trapezoidal column blank of cross section, and going to the bottom that this is trapezoidal is the width of blank; This trapezoidal height is the gauge of blank; This trapezoidal hypotenuse is working face, one 14 ° relief angle is arranged, between solder side and the trapezoidal right-angle side one 0.8 * 45 ° chamfering is arranged, it is characterized in that, the length dimension of blank is done the length dimension of mould, the thickness of blank product is done the width dimensions of mould, and the working face of blank and the width of welding bottom surface are done the compacting height dimension; 14 ° of angles of the working face of blank are separately positioned on the upper and lower drift of mould with the chamfering of welding bottom surface, the nib of the mould of punching press is the shape corresponding to the welding bottom surface of blank, longitudinal size is corresponding to the length of blank, and lateral dimension is suppressed height corresponding to the width of blank corresponding to the thickness of blank; This blank is vertically placed in nib, and working face is towards the top, and solder side is towards the below, and going to the bottom of cross section is positioned at a side; And upper base is positioned at an other side.
Preferably, the Mold Making constriction coefficient is 1.18～1.24.
According to the present invention, change the design principle of traditional moulds, provide the mould that is used for making similar D2 type product, wherein, the direction of width t is as the vertical direction in the mould between the working face of D2 type product and the welding bottom surface, and this width t does the size of compacting height.
According to the present invention, the patrix passage becomes with the cross-sectional area of counterdie passage and equates.In process of production, uniform filling, the product of producing is after high temperature sintering shrinks, and the width dimensions of solder side and working face can guarantee to have improved the product first-time qualification rate substantially in the error of 0.2mm.
According to the present invention, every light 0.5～2g of substance (size according to product is decided) of the qualified products that the substance of the qualified products of producing is produced than traditional design scheme has saved ample resources.
According to the present invention, when making mould, only need line to cut a procedure, no longer need increase the electric spark operation, therefore, accelerated fabrication cycle and reduced processing cost, thereby improved production efficiency.
Description of drawings
Figure 1A and Figure 1B are respectively cross-sectional view and vertical side views of D2 type product.
Fig. 2 A and Fig. 2 B are respectively the traditional moulds structural representations of D2 type product.
Fig. 3 A and Fig. 3 B are respectively the mould structure schematic diagrames according to D2 type product of the present invention.
Fig. 4 is the closing structure schematic diagram of the traditional moulds of D2 type product.
Fig. 5 is the closing structure schematic diagram of the mould of the present invention of D2 type product.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing:
Shown in Figure 1A and 1B, the length dimension of product solder side 20 is L under the perfect condition; The length dimension of product working face 10 is L1 under the perfect condition; The value of L1 is close to the value of L; The width dimensions of product is t; The gauge S of product.
Shown in Fig. 3 A and 3B, comprise as the steel bushing 1 of die body and be embedded in alloy core rod 2 in the steel bushing 1 according to the mould of D2 type product of the present invention.The central authorities of alloy core rod 2 from top to bottom are the constant nibs of cross section 3, and patrix passage, product blank shaping area, counterdie passage all are the parts of nib 3.Nib 3 is formed by the line cutting; Product blank shaping area has been cancelled the inclined-plane corresponding to product working face 10 as the part of nib 3, no longer needs spark machined as second operation work.
As shown in Figure 5, under the mould closure state, the upper punch 101 of mold 100, the low punch 201 of bed die 200 all are engaged in the nib 3, the blank 50 of press-formed product.This blank 50 is vertically placed, and working face 10 is towards the top, and solder side 20 is towards the below.Going to the bottom of product cross section is positioned at a side; And the upper base of product cross section is positioned at an other side.The area of the cross section of the area of the cross section of patrix passage, counterdie passage all is the area of the cross section of nib 3.
Therefore, when the compacting of product blank is produced, the density that can guarantee product working face 10 is even, the green density of the product working face of producing 10 equals the green density of solder side 20, behind high temperature sintering, the size of working face 10 is more even than the dimensional contraction of solder side 20, causes the size of product length to reach unanimity, and has improved the first-time qualification rate of product greatly.
Therefore, according to mould of the present invention, when producing, be easy to control the length dimension of product, and Mold Making becomes also simply, only need the line cutting hole, no longer need electric spark to beat the counterbore operation, therefore, shortened the process-cycle, reduced cost of manufacture.Its geometry makes and is very easy to moulding.
As shown in Figure 5, the present invention does the height dimension of mould to the length dimension L of D2 type product, and the thickness S of D2 type product does the die width size, and the width t of the working face 10 of D2 type product and welding bottom surface 20 is done the compacting height dimension.
Particularly, 0.8 * 45 ° of chamfering of 14 ° α angle of the working face 10 of product and welding bottom surface 20 is made in respectively on the drift 201 of drift 101, bed die 200 of the mold 100 of mould.
The length dimension L1 of the product working face 10 that mould of the present invention is produced is than the only little 0～0.2mm of length dimension L of solder side 20.The Mold Making constriction coefficient generally gets 1.18～1.24.
Adopt mould of the present invention, every of the substance of the qualified products of producing is wanted light 0.5～2 gram, even 0.5～4 gram, saves ample resources, has improved production efficiency.
Claims (5)
1. the diel of a carbide chip, this carbide chip is made by the rectangular trapezoidal column blank (50) of cross section, and going to the bottom that this is trapezoidal is the width (t) of blank (50); The gauge (S) that this trapezoidal height is blank (50); This trapezoidal hypotenuse is working face (10), one 14 ° relief angle (α) is arranged, between welding bottom surface (20) and the trapezoidal right-angle side 0.8x45 ° chamfering (C) is arranged, described diel comprises mold (100), bed die (200), as the steel bushing (1) of die body be embedded in alloy core rod (2) in the steel bushing (1), the central authorities of alloy core rod (2) are provided with nib (3), it is characterized in that
Nib (3) is the shape corresponding to the welding bottom surface (20) of blank (50), the longitudinal size of nib (3) is corresponding to the length (L) of blank (50), and the lateral dimension of nib (3) is corresponding to the thickness (S) of blank (50), and the compacting of nib (3) height is corresponding to the width (t) of blank (50);
The cross section of nib (3) is constant, comprises patrix channel section and the counterdie channel section that can cooperate with the low punch (201) of bed die (200) and the profiled section of the product blank (50) between patrix channel section and counterdie channel section that can cooperate with the upper punch (101) of mold (100);
The lower surface of the upper punch (101) of mold (100) be can be closely connected with working face (10) inclined surface, and the upper surface of the low punch (201) of bed die (200) is provided with the projection of the chamfering of the corresponding blank of cross section (50).
2. diel as claimed in claim 1 is characterized in that, going to the bottom of the cross section of blank (50) is positioned at a side of nib (3); And upper base is positioned at an other side of nib (3).
3. diel as claimed in claim 1 is characterized in that, the Mold Making constriction coefficient is 1.18～1.24.
4. the process for stamping of a carbide chip, this carbide chip by cross section at right angles trapezoidal column blank (50) make, going to the bottom that this is trapezoidal is the width (t) of blank (50); The gauge (S) that this trapezoidal height is blank (50); This trapezoidal hypotenuse is working face (10), and one 14 ° relief angle (α) is arranged, and between welding bottom surface (20) and the trapezoidal right-angle side 0.8x45 ° chamfering (C) is arranged, it is characterized in that,
The length dimension of blank (50) (L) is done the height dimension of mould, and the thickness (S) of blank (50) product is done the width dimensions of mould, and the working face of blank (50) (10) and the width (t) of welding bottom surface (20) are done the compacting height dimension; 14 ° of angles of the working face of blank (50) are separately positioned on the upper and lower drift of mould with the chamfering of welding bottom surface,
The nib of the mould of punching press (3) is the shape corresponding to the welding bottom surface (20) of blank (50), longitudinal size is corresponding to the length (L) of blank (50), and lateral dimension is suppressed height corresponding to the width (t) of blank (50) corresponding to the thickness (S) of blank (50);
This blank (50) is vertical the placement in nib (3), and working face (10) is towards the top, and welding bottom surface (20) is towards the below, and going to the bottom of cross section is positioned at a side; And upper base is positioned at an other side.
5. process for stamping as claimed in claim 4 is characterized in that, the Mold Making constriction coefficient is 1.18～1.24.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110159857 CN102274892B (en) | 2011-06-15 | 2011-06-15 | Stamping die and stamping method for hard metal alloy cutting blades |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110159857 CN102274892B (en) | 2011-06-15 | 2011-06-15 | Stamping die and stamping method for hard metal alloy cutting blades |
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| CN102274892A CN102274892A (en) | 2011-12-14 |
| CN102274892B true CN102274892B (en) | 2013-07-17 |
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| CN104707999B (en) * | 2015-03-16 | 2017-12-26 | 江西江钨硬质合金有限公司 | Special-shaped powder metallurgy product impact forming method and mould |
| WO2021212448A1 (en) * | 2020-04-24 | 2021-10-28 | Robert Bosch Gmbh | Compression mold and method for forming carbide tip of drill bit by widthwise pressing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1212185A (en) * | 1997-07-10 | 1999-03-31 | 日本电气株式会社 | Cutting apparatus for cutting metallic plate and cutting method of cutting metallic plate using the same cutting apparatus |
| CN1644261A (en) * | 2005-03-04 | 2005-07-27 | 中西武仪 | Method for shaping facsimile edge |
| CN202129358U (en) * | 2011-06-15 | 2012-02-01 | 江西稀有稀土金属钨业集团有限公司 | Stamping die for hard alloy blades |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT9818U1 (en) * | 2007-04-04 | 2008-04-15 | Miba Sinter Austria Gmbh | DEVICE AND METHOD FOR CALIBRATING A SINTERING PART |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1212185A (en) * | 1997-07-10 | 1999-03-31 | 日本电气株式会社 | Cutting apparatus for cutting metallic plate and cutting method of cutting metallic plate using the same cutting apparatus |
| CN1644261A (en) * | 2005-03-04 | 2005-07-27 | 中西武仪 | Method for shaping facsimile edge |
| CN202129358U (en) * | 2011-06-15 | 2012-02-01 | 江西稀有稀土金属钨业集团有限公司 | Stamping die for hard alloy blades |
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Effective date of registration: 20220216 Address after: 330600 Industrial Park, Jing'an County, Yichun City, Jiangxi Province Patentee after: JIANGXI JIANGWU CEMENTED CARBIDE CO.,LTD. Address before: 330046 No. 118 West Beijing Road, Jiangxi, Nanchang Patentee before: JIANGXI RARE EARTH AND RARE METALS TUNGSTEN Group Corp. |
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