CN103302119A - Hole-shaped structural polycrystalline diamond drawing die and machining method thereof - Google Patents
Hole-shaped structural polycrystalline diamond drawing die and machining method thereof Download PDFInfo
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- CN103302119A CN103302119A CN2013102923929A CN201310292392A CN103302119A CN 103302119 A CN103302119 A CN 103302119A CN 2013102923929 A CN2013102923929 A CN 2013102923929A CN 201310292392 A CN201310292392 A CN 201310292392A CN 103302119 A CN103302119 A CN 103302119A
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Abstract
The invention discloses a hole-shaped structural polycrystalline diamond drawing die and a machining method thereof. A top opening of an inlet area of a die core is larger a bottom opening and a lubrication area is connected with the inlet area and a compression area; a top opening of the compression area is larger than the bottom opening, the cross section of the compression is in an isosceles trapezoid shape, and a compression angle of the compression area is from 8 to 9 degrees; and a diameter sizing area is in a column shape and a top opening of an outlet area is smaller than the bottom opening. The machining method of the hole-shaped structural polycrystalline diamond drawing die comprising machining die holes through laser; machining the inlet area on an ultrasonic wave grinding machine and machining the outlet area after cleaning; and machining the compression angle to be 8 to 9 degrees through a linear polishing machine, machining the diameter sizing area through the linear polishing machine and machining an outlet area angle to be in 60 +/- 10 degrees. According to the hole-shaped structural polycrystalline diamond drawing die and the machining method thereof, stress on a working surface can be scattered and the service life of the die can be improved due to compression angle reduction, the diameter sizing area is plat and straight and is in an absolute column shape, and diameter error of machined wire is reduced to +/-0.0002 mm.
Description
Technical field
The present invention relates to a kind of wire drawing die and processing method thereof, in particular a kind of polycrystalline diamond wire drawing die of pass structure and processing method thereof.
Background technology
For studying specific novel wire drawing die pass structure, make it satisfy the drawing condition of plated surface brass cutting high abrasion steel wire.The cutting loading characteristic of high abrasion steel wire in the compressional zone analyzed when at first needing drawing, and then obtains the relation between the stressed and compression angle of mould, and final analysis also obtains the optimal compression angle value and rational compressional zone length value.Whether the pass of wire drawing die is reasonable, directly has influence on the mold use life-span.The workspace compression angle has very important effect to flowability, axial compressive force and the tensile force of wire drawing metal, the unit pressure of die wall in the core rod.Sizing area can make wire rod obtain stable, accurate shape and size.
(1) find by the profile measurement to the wire drawing die endoporus, the wire drawing die compressional zone angle of domestic production is 12～20 °, and the compressional zone height accounts for about 1/3 to 1/4 of core rod height.Because the compressional zone angle is larger, is not easy to make lubricant and wire to form good coated state, namely form between top, compressional zone and the wire " angle of wedge effect ", can't form good lubrication pressure.The compressional zone is relatively short, because compressional zone short and small, causes effective usable floor area less in the hole in, does not have a certain amount of lubricant of sufficiently long space storage to form " angle of wedge effect ", and lubricant is flow backwards out again, does not have due lubricant effect.
(2) sizing area is short and small and not obvious.Sizing area length is too short, causes very quick-wearing of mould sizing area, because the closer to the mould outlet end, the deformation velocity of metal is larger, and wearing and tearing herein are also larger, causes the sizing area intake section that joins with the compressional zone to wear and tear thereupon, thereby sizing area is shorter and shorter, causes at last wire diameter overproof.
(3) traditional wire drawing die process equipment is outmoded, and grinding method falls behind, and the outline line of compressional zone and sizing area is by rectilinear(-al) in the very difficult assurance pass.If the compressional zone working face is not straight, form the orthodrome transition with lubricated district, Partial angle increases on the compressional zone, and the physical length of compressional zone shortens, and causes the Fast Wearing of nib.If sizing area is because the processing inaccuracy of mould causes its working face not straight, be that connection between compressional zone and the sizing area is arc transition, the design length of calibrating strap has ground off many in process, when equaling also not have the drawing wire, the arrival end of sizing area has been worn, wearing and tearing are to occur in minimum place, sizing area back segment aperture during the drawing wire, cause the neck location rapid wearing of mould, and wire diameter is overproof thereupon.In a word, because the reduction of the endoporus geometrical precision that process equipment and processing technology cause, can't guarantee the linear structure of pass, can cause the wearing and tearing aggravation of mould, reduce die life.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of polycrystalline diamond wire drawing die and processing method thereof of pass structure is provided, by processing rational pass, improve the mold use life-span.
The present invention is achieved by the following technical solutions, and the core rod of wire drawing die of the present invention comprises the inlet region that from top to bottom is set in turn in the core rod, lubricated district, compressional zone, sizing area and outlet area; The open top of described inlet region is greater than bottom opening, and lubricated district connects into respectively oral region and compressional zone; The open top of described compressional zone is greater than bottom opening, and the cross section of compressional zone is isosceles trapezoid, and the compression angle of compressional zone is 8～9 °; Sizing area is cylindrical, and the open top of outlet area is less than the bottom.
As one of optimal way of the present invention, the height of described compressional zone is 1/3～1/4 of core rod height.
The height of described sizing area and diameter ratio are 1:4～1:5, and the height of sizing area is 30% of steel wire wire diameter.
A kind of processing method of polycrystalline diamond wire drawing die of pass structure may further comprise the steps:
(1) gets nib with laser first;
(2) be manufactured into oral region at ultrasonic wave grinder, being manufactured into the oral region angle is 60 ± 10 °, manufacturing areas for export commodities after cleaning, and outlet area is processed as 30 ± 10 °;
(3) throw machined compression angle to 8～9 ° with line, line is passed nib stretching, adjustment equipment starts line and throws machine after the compression angle of setting, and guarantees that institute's machining angle is close to straight line;
(4) throw the machined sizing area with line, the error of perpendicularity of sizing area is in 0.3 °, and then the manufacturing areas for export commodities angle is 60 ± 10 °.
The compressional zone of wire drawing die is called again the workspace, and it is the most important part of whole nib, and its effect is to make metal carry out herein plastic deformation, obtains needed shape and size.For cutting steel wire solar panel wire drawing die, the cutting steel wire surface of drawing is coated with brass, requires the layer of brass of steel wire drawing Surface During not come off.When compression angle was too small, the contact area of blank and compressional zone increased, thereby increased the frictional force of wire and nib, and pulling capacity is increased.Yet along with the increase of compression angle, although frictional force can reduce rapidly, shearing force can increase gradually, and excessive compression angle can make the streamline turn sharp of wire in the compressional zone, causes mold breakdown thereby cause additional shear strain to increase.For the brass coating cutting steel wire in surface, the cracking rate of mould was lower when compression angle was 8～9 °, and Steel Wire Surface brass quality is higher, and drawing stress is minimum, is optimal compression angle angle.
Sizing area is the final tache that metal wire rod is determined final size, and sizing area adopts straight column structure, can form a kind of " trapezoidal " structure in the junction with the compressional zone, and sizing area is longer, and trapezium structure is longer.This trapezium structure can form a stable wear stage.Only have after trapezium structure is worn and torn fully, the aperture of core rod just can obviously increase, and this is to guarantee the wire drawing die key point of realization high life.The sizing area structure of determining is the absolute circle cylindricality, and the error of perpendicularity of sizing area highly is 30% of steel wire wire diameter in 0.3 °.Through experimental verification, the wire diameter error of the cutting steel wire of producing narrows down to ± 0.0002mm, and the quality of surperficial layer of brass meets the requirements.
The present invention has the following advantages compared to existing technology: the present invention is controlled at 8～9 ° with compression angle, and the angle of compression angle reduces the stress on the face of can spreading the work, and improves die life; Sizing area is straight and it is absolute cylindrical to be, the error of perpendicularity of calibrating strap is in 0.3 °, and the gauge or diameter of wire error of production narrows down to ± 0.0002mm; Adopt " orthoscopic " mill mould, polishing technology during Mould Machining.The compression angle inclined-plane is deflected into axial location, guaranteed the linearity of this face.
Description of drawings
Fig. 1 is structural representation of the present invention.
The specific embodiment
The below elaborates to embodiments of the invention, and the present embodiment is implemented under take technical solution of the present invention as prerequisite, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, the core rod of the wire drawing die of the present embodiment comprises the inlet region 1 that from top to bottom is set in turn in the core rod, lubricated district 2, compressional zone 3, sizing area 4 and outlet area 5; The open top of described inlet region 1 is greater than bottom opening, and lubricated district 2 connects into respectively oral region 1 and compressional zone 3; The open top of described compressional zone 3 is greater than bottom opening, and the cross section of compressional zone 3 is isosceles trapezoid, and the compression angle α of compressional zone 3 is 8～9 °; Sizing area 4 is cylindrical, and the open top of outlet area 5 is less than the bottom.The safety angle β of outlet area 5 is 10～15 °.
In the present embodiment, the height of compressional zone 3 is 1/3 of core rod height.The height of sizing area 4 and diameter ratio are 1:4, and the height of sizing area 4 is 30% of steel wire wire diameter.
The processing method of the wire drawing die of the present embodiment may further comprise the steps:
(1) gets nib with laser first;
(2) be manufactured into oral region 1 at ultrasonic wave grinder, being manufactured into oral region 1 angle is 60 ± 10 °, manufacturing areas for export commodities 5 after cleaning, and outlet area 5 is processed as 30 ± 10 °;
(3) throw machined compression angle to 8～9 ° with line, line is passed nib stretching, adjustment equipment starts line and throws machine after the compression angle of setting, and guarantees that institute's machining angle is close to straight line;
(4) throw machined sizing area 4 with line, the error of perpendicularity of sizing area 4 is in 0.3 °, and then manufacturing areas for export commodities 5 angles are 60 ± 10 °.
Operation principle is: when mill was clamped on the chuck of High Rotation Speed, card grinding was done linear reciprocating motion by certain angle simultaneously with higher inverted speed rotation, and nib is ground.During grinding card grinding is deflected into the angle of machined surface, thereby can guarantee the linear structure of core rod, polishing process adopts similar method, and comparing different from grinding is the axial location that mould is deflected into polish line, does simultaneously linear reciprocating motion.
Claims (4)
1. the polycrystalline diamond wire drawing die of a pass structure is characterized in that, the core rod of described wire drawing die comprises the inlet region that from top to bottom is set in turn in the core rod, lubricated district, compressional zone, sizing area and outlet area; The open top of described inlet region is greater than bottom opening, and lubricated district connects into respectively oral region and compressional zone; The open top of described compressional zone is greater than bottom opening, and the cross section of compressional zone is isosceles trapezoid, and the compression angle of compressional zone is 8～9 °; Sizing area is cylindrical, and the open top of outlet area is less than the bottom.
2. the polycrystalline diamond wire drawing die of pass structure according to claim 1 is characterized in that, the height of described compressional zone is 1/3～1/4 of core rod height.
3. the polycrystalline diamond wire drawing die of pass structure according to claim 1 is characterized in that, the height of described sizing area and diameter ratio are 1:4～1:5, and the height of sizing area is 30% of steel wire wire diameter.
4. the processing method of the polycrystalline diamond wire drawing die of a pass structure as claimed in claim 1 is characterized in that, may further comprise the steps:
(1) gets nib with laser first;
(2) be manufactured into oral region at ultrasonic wave grinder, being manufactured into the oral region angle is 60 ± 10 °, manufacturing areas for export commodities after cleaning, and outlet area is processed as 30 ± 10 °;
(3) throw machined compression angle to 8～9 ° with line, line is passed nib stretching, adjustment equipment starts line and throws machine after the compression angle of setting, and guarantees that institute's machining angle is close to straight line;
(4) throw the machined sizing area with line, the error of perpendicularity of sizing area is in 0.3 °, and then the manufacturing areas for export commodities angle is 60 ± 10 °.
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| CN2013102923929A CN103302119A (en) | 2013-07-11 | 2013-07-11 | Hole-shaped structural polycrystalline diamond drawing die and machining method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106180231A (en) * | 2016-07-29 | 2016-12-07 | 南通汇丰电子科技有限公司 | A kind of drawing mould and the draw systems of metal wire |
| CN107855370A (en) * | 2017-11-24 | 2018-03-30 | 苏州金钜松机电有限公司 | A kind of copper wire intermediate drawing |
| CN107900124A (en) * | 2017-12-29 | 2018-04-13 | 重庆龙煜精密铜管有限公司 | Stretch external mold and again die drawing stretching process |
| CN109351789A (en) * | 2018-12-03 | 2019-02-19 | 安徽恒明工程技术有限公司 | Accurate drawing mould for the forming of minor radius round rectangle enameled wire |
| CN109692879A (en) * | 2018-12-24 | 2019-04-30 | 铜陵精远线模有限责任公司 | A kind of method of linear cutter diamond wire-drawing die |
| CN109731935A (en) * | 2018-12-06 | 2019-05-10 | 宜昌给立金刚石工业有限公司 | The method of Glomerocryst adamas legging mould insert blank and its de- cobalt |
| CN110102586A (en) * | 2019-06-03 | 2019-08-09 | 河南四方达超硬材料股份有限公司 | Diamond wire drawing die with gradually changed die hole angle and hole forming method thereof |
| CN110370102A (en) * | 2019-07-11 | 2019-10-25 | 汇专绿色工具有限公司 | The method in the processing profiled hole of ultrasonic impact |
| CN113183343A (en) * | 2021-05-12 | 2021-07-30 | 安徽聚芯智造科技股份有限公司 | Self-adaptive cutter and diamond wire drawing die exposed drilling surface processing method |
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| CN202461157U (en) * | 2012-02-29 | 2012-10-03 | 天长市天屹模具科技发展有限公司 | Novel wire drawing die |
| CN203343197U (en) * | 2013-07-11 | 2013-12-18 | 安徽振兴拉丝模有限公司 | Hole-shaped structural polycrystalline diamond drawing die |
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| US4016736A (en) * | 1975-06-25 | 1977-04-12 | General Electric Company | Lubricant packed wire drawing dies |
| US5636545A (en) * | 1995-07-07 | 1997-06-10 | General Electric Company | Composite diamond wire die |
| CN1544170A (en) * | 2003-11-11 | 2004-11-10 | 安 张 | Diamond die production process |
| CN201076874Y (en) * | 2007-08-17 | 2008-06-25 | 株洲硬质合金集团有限公司 | Wire-drawing die |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106180231A (en) * | 2016-07-29 | 2016-12-07 | 南通汇丰电子科技有限公司 | A kind of drawing mould and the draw systems of metal wire |
| CN107855370A (en) * | 2017-11-24 | 2018-03-30 | 苏州金钜松机电有限公司 | A kind of copper wire intermediate drawing |
| CN107900124A (en) * | 2017-12-29 | 2018-04-13 | 重庆龙煜精密铜管有限公司 | Stretch external mold and again die drawing stretching process |
| CN109351789A (en) * | 2018-12-03 | 2019-02-19 | 安徽恒明工程技术有限公司 | Accurate drawing mould for the forming of minor radius round rectangle enameled wire |
| CN109731935A (en) * | 2018-12-06 | 2019-05-10 | 宜昌给立金刚石工业有限公司 | The method of Glomerocryst adamas legging mould insert blank and its de- cobalt |
| CN109692879A (en) * | 2018-12-24 | 2019-04-30 | 铜陵精远线模有限责任公司 | A kind of method of linear cutter diamond wire-drawing die |
| CN110102586A (en) * | 2019-06-03 | 2019-08-09 | 河南四方达超硬材料股份有限公司 | Diamond wire drawing die with gradually changed die hole angle and hole forming method thereof |
| CN110370102A (en) * | 2019-07-11 | 2019-10-25 | 汇专绿色工具有限公司 | The method in the processing profiled hole of ultrasonic impact |
| CN113183343A (en) * | 2021-05-12 | 2021-07-30 | 安徽聚芯智造科技股份有限公司 | Self-adaptive cutter and diamond wire drawing die exposed drilling surface processing method |
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Application publication date: 20130918 |