CN108500072B - High-precision Cold drawing rod system - Google Patents
High-precision Cold drawing rod system Download PDFInfo
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- CN108500072B CN108500072B CN201810218676.6A CN201810218676A CN108500072B CN 108500072 B CN108500072 B CN 108500072B CN 201810218676 A CN201810218676 A CN 201810218676A CN 108500072 B CN108500072 B CN 108500072B
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- diameter
- ontology
- inner hole
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- die sleeve
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
- B21C1/18—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes from stock of limited length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
- B21C3/02—Dies; Selection of material therefor; Cleaning thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
Abstract
High-precision Cold drawing rod system, including reducing cold drawing die, diameter measuring device, hydraulic system and servo-system；Diameter measuring device is used to measure the blank diameter before cold-drawn and/or after cold-drawn, is located at outside reducing cold drawing die, and the inner hole B of face ontology；Hydraulic system is connected to by pipeline with seal nipple；Servo-system receives the measurement data of diameter measuring device and regulates and controls the output hydraulic pressure of hydraulic system according to measurement data.The unstable problem of finished diameter after cold-drawn caused by the present invention is larger for a collection of bar tolerance, its diameter is measured before bar drawing, the high-pressure fluid of relevant pressure is exported by hydraulic system again, instant variable compression diameter cold drawing die sizing section aperture, to make up the diameter springback capacity after drawing, and then guarantee the dimensional uniformity after a collection of bar drawing, that is, ensure that bar formed precision, reduce drawing number compared to existing cold-drawing technology again, reduces production cost.
Description
Technical field
The present invention relates to metal plastic deformation processing technique fields, especially high-precision Cold drawing rod system.
Background technique
When producing transmission shaft using traditional cold-drawing method, since blank tolerance is generally below IT14 (a collection of blank diameter
It varies, very inconsistent), the finished diameter after leading to cold-drawn is also unstable, if a collection of blank only passes through a cold-drawn,
Precision will be generally less than IT8, it is difficult to meet the quality requirement of high-precision transmission shaft, cannot directly assemble bearing use.
For with a batch blank that basic size is identical but actual diameter size is different, best match sizing hole
Diameter is also different, can be effective if can be according to the difference of blank diameter, the diameter of the change cold drawing die sizing section of adaptability
Influence of the reduction blank error to cold-drawing transmission shaft formed precision, however, mould development design is once complete and manufacture,
The structure of mold will be immutable, and therefore, traditional cold drawing die is difficult to meet the quality requirement of high-precision transmission shaft.
By theoretical calculation and experimental verification and traditional cold-drawn experience: drawing sizing reduction is smaller, and deflection is also small, cold-drawn
Error afterwards is with regard to small；Conversely, drawing sizing reduction is bigger, then the error after cold-drawn is with regard to big.When the diameter basic size of a collection of blank
For 32mm, for deviation in ± 0.4mm, the diameter error maximum after cold-drawn reaches 47um, illustrates on traditional cold drawing die,
How no matter its condition optimize, and cold-drawing transmission shaft forming diameter precision is difficult to reach IT8.
When the required precision of transmission shaft is higher than IT8, following three kinds of processing methods: 1, turning or grinding are usually taken, lack
Point is low efficiency, at high cost, and waste material and waste liquid can be generated in process, reduces the utilization rate of material, is unfavorable for green system
It makes.2, the diameter of one group of blank is measured and is grouped by diameter, drawing is carried out using the mold of different group numbers,
The disadvantage is that adding additional the workload of grouping and the quantity of mold, that is, increase production cost.3, for straight in a collection of blank
Diameter is biggish to take multiple drawing, the disadvantage is that influencing production efficiency and increasing cold-drawn manufacturing cost.
Summary of the invention
The purpose of the present invention is overcome the deficiencies in the prior art, and provide a kind of high-precision Cold drawing rod system, it is solved
Traditional cold drawing die and cold-drawing technology is difficult to the problem of meeting the production of high-precision transmission shaft.
The technical scheme is that high-precision Cold drawing rod system, including reducing cold drawing die, diameter measurement dress
It sets, hydraulic system and servo-system；
Reducing cold drawing die includes die sleeve, ontology and seal nipple；
Die sleeve is in sleeve shaped, interior to be equipped with the inner hole A being packed into for ontology, and inner hole A penetrates through the both ends of the surface of die sleeve, inside also sets
Have from die sleeve outer wall and penetrates through to the fluid channel of die sleeve inner hole A；
Ontology is in socket type, in be equipped with the inner hole B that passes through for blank, inner hole B penetrates through the both ends of the surface of ontology, inner hole B from
One end to the other end is successively arranged undergauge section, sizing section and outlet section, and the outer wall of ontology is equipped with annular groove, the position of annular groove
It is corresponding with the position of sizing section；Ontology is sealingly mounted in the inner hole A of die sleeve, and affixed by screw and die sleeve, ontology
Annular sap cavity is formed between annular groove and the inner hole A hole wall of die sleeve, annular sap cavity is connected to the fluid channel of die sleeve；
Seal nipple is fixedly mounted in the fluid channel of die sleeve, and is located at fluid channel in the opening of die sleeve outer wall；
Diameter measuring device is used to measure the blank diameter before cold-drawn and/or after cold-drawn, is located at reducing cold drawing die
Outside, and the inner hole B of face ontology；
Hydraulic system is connected to by pipeline with seal nipple for exporting high-pressure fluid；
Servo-system is connect with diameter measuring device and hydraulic system electrical connection or communication mode respectively, is received diameter and is surveyed
It measures the measurement data of device and regulates and controls the output hydraulic pressure of hydraulic system according to measurement data.
The further technical solution of the present invention is: diameter measuring device includes contactless air pressure measuring apparatus of diameter and air pressure
Sensor, baroceptor are located in the gas channels of contactless air pressure measuring apparatus of diameter.
Further technical solution is the present invention: being realized between ontology and die sleeve by two groups of self-tightening type v-rings
Sealing, the annular sap cavity are located between two groups of self-tightening type v-rings.
The further technical solution of the present invention is: the undergauge section of ontology inner hole B be taper hole, the taper hole from undergauge section to
The orient diameter of sizing section is tapered, and the taper a of the taper hole is 12 ° ± 13 '；The length L of sizing section is 5mm ± 0.1mm.
The further technical solution of the present invention is: diameter measuring device has one, is located at close to ontology inner hole B undergauge
The outside of section.
The further technical solution of the present invention is: when there are two diameter measuring devices, one of them is located at close to ontology
The outside of inner hole B undergauge section, another is located at close to the outside of ontology inner hole B outlet section.
The technical scheme is that bar formed precision control method, applied to above-mentioned high-precision Cold drawing rod system
System, steps are as follows:
S01 requires draw diameter value according to the size datum value and technique of a collection of bar, and selection has best sizing hole
The reducing cold drawing die of diameter；
S02 before drawing, is measured by the diameter measuring device outside ontology inner hole B undergauge section to spike pulling material
Diameter, further according to spike pulling material diameter and technique require draw diameter to determine its best sizing section aperture, further according to best fixed
Diameter hole diameter determines hydraulic system output hydraulic pressure, and servo system control hydraulic system output phase answers hydraulic high-pressure fluid to enter ring
Shape sap cavity, by sizing section aperture compression to the corresponding best sizing section aperture of spike pulling material；
In this step, the diameter before a collection of bar drawing varies, wherein the bigger bar of diameter, drawing tube reducing
Amount is also bigger, and the residual stress after drawing is also bigger, and the diameter springback capacity after drawing is also bigger；Therefore, bigger for diameter
Bar answers enlarged relative hydraulic system output hydraulic pressure, reduces ontology sizing section aperture accordingly, is returned with making up the diameter after drawing
Bullet amount, and then guarantee the dimensional uniformity after a collection of bar drawing；
In this step, hydraulic system output hydraulic pressure is higher, and sizing section aperture is compressed smaller, corresponding pass between the two
It is calculated before tying up to cold-drawn by simulation and Experimental Calibration is measured, be known quantity；
S03, bar by external force drawing, pass sequentially through undergauge section, sizing section and the outlet section of ontology inner hole B and by cold-drawn at
Type, bar are surveyed after the discharge of the outlet section of ontology inner hole B by the diameter measuring device outside ontology inner hole B outlet section
Diameter after measuring cold-drawn, measurement feedback to servo-system, if meeting technique requirement, servo-system does not issue control and refers to
It enables；If being unsatisfactory for technique requirement, servo-system controls hydraulic system fine tuning output hydraulic pressure size immediately, to change sizing hole
Diameter proposes high-precision purpose to reach；
In this step, fine tuning rule is that the diameter after cold-drawn is greater than technique required value, hydraulic system output hydraulic pressure pressure phase
It should be turned up；Conversely, the diameter after cold-drawn is less than technique required value, hydraulic system output hydraulic pressure pressure is accordingly reduced.
The technical scheme is that bar formed precision control method, applied to above-mentioned high-precision Cold drawing rod system
System, steps are as follows:
S01 measures the diameter to spike pulling material, then root by the diameter measuring device outside ontology inner hole B undergauge section
The decrement in ontology sizing section aperture is determined according to the diameter after the diameter of spike pulling material and technique require draw, it is fixed further according to ontology
The decrement of diameter hole diameter determines hydraulic system output hydraulic pressure；
In this step, bar causes diameter to spring back after drawing there are residual stress, and bar diameter is bigger, then when drawing
Sizing reduction increase, then springback capacity increases after drawing, therefore should increase hydraulic system output hydraulic pressure, makes ontology sizing section aperture phase
It should reduce；
In this step, hydraulic system output hydraulic pressure is higher, and sizing section aperture is compressed smaller, hydraulic system output hydraulic pressure
Corresponding relationship between sizing section aperture is calculated before cold-drawn by simulation and Experimental Calibration is measured, and is known quantity；
S02, servo system control hydraulic system output phase answer hydraulic high-pressure fluid to enter annular sap cavity, by sizing hole
Diameter is compressed to the best sizing section aperture to spike pulling material；
S03 passes sequentially through undergauge section, sizing section and the outlet section of ontology inner hole B and cold to spike pulling material by external force drawing
Pull into type.
The invention has the following advantages over the prior art:
The unstable problem of finished diameter after cold-drawn caused by the present invention is larger for a collection of bar tolerance, in bar drawing
Its diameter is measured before, then exports the high-pressure fluid of relevant pressure by hydraulic system, and instant variable compression diameter cold drawing die is fixed
Diameter hole diameter to make up the diameter springback capacity after drawing, and then guarantees the dimensional uniformity after a collection of bar drawing, that is, ensure that
Bar formed precision, and reduce drawing number compared to existing cold-drawing technology, reduce production cost.
Below in conjunction with figure, the invention will be further described with embodiment.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention 1；
Fig. 2 is the structural schematic diagram of die sleeve；
Fig. 3 is the right view of Fig. 2；
Fig. 4 is the structural schematic diagram of ontology；
Fig. 5 is the right view of Fig. 4；
Fig. 6 is the structural schematic diagram of the embodiment of the present invention 2.
Marginal data: die sleeve 11；Inner hole A111；Fluid channel 112；Ontology 12；Inner hole B121；Undergauge section 1211；Sizing
Section 1212；Outlet section 1213；Annular groove 122；Seal nipple 13；V-ring 14；Diameter measuring device 2；Annular sap cavity 9.
Specific embodiment
Embodiment 1:
As shown in Figs. 1-5, high-precision Cold drawing rod system, including it is reducing cold drawing die, diameter measuring device 2, hydraulic
System and servo-system.
Reducing cold drawing die includes die sleeve 11, ontology 12 and seal nipple 13.Die sleeve 11 is in sleeve shaped, and interior be equipped with supplies
Ontology 12 be packed into inner hole A111, inner hole A111 penetrate through die sleeve 11 both ends of the surface, be inside additionally provided with from 11 outer wall of die sleeve penetrate through to
The fluid channel 112 of 11 inner hole A111 of die sleeve.Ontology 12 is in socket type, interior to be equipped with the inner hole B121 passed through for blank, inner hole
B121 penetrates through the both ends of the surface of ontology 12, and inner hole B121 is successively arranged undergauge section 1211,1212 and of sizing section from one end to the other end
The outer wall of outlet section 1213, ontology 12 is equipped with annular groove 122, and the position of annular groove 122 is opposite with the position of sizing section 1212
It answers；Ontology 12 is sealingly mounted in the inner hole A111 of die sleeve 11, and affixed by screw and die sleeve 11, the annular groove of ontology 12
The annular sap cavity 9 of sealing, the fluid channel of annular sap cavity 9 and die sleeve 11 are formed between 122 and the inner hole A111 hole wall of die sleeve 11
112 connections.Seal nipple 13 is fixedly mounted in the fluid channel 112 of die sleeve 11, and is located at fluid channel 112 outside die sleeve 11
The opening of wall.
Diameter measuring device 2 includes that contactless air pressure measuring apparatus of diameter and baroceptor, baroceptor are located at non-
In the gas channels of contact air pressure measuring apparatus of diameter.There are two diameter measuring devices 2, one of them is located in ontology 12
The outside of hole B121 undergauge section 1211, for measuring the blank diameter before cold-drawn, another is located at close to 12 inner hole B121 of ontology
The outside of outlet section 1213, for measuring the blank diameter after cold-drawn.The working principle of diameter measuring device are as follows: straight when bar
Diameter is bigger, and the gap between the measurement ring of bar and contactless air pressure measuring apparatus of diameter is smaller, and air pressure is caused to increase；Conversely,
The diameter of bar is smaller, and the gap between the measurement ring of bar and contactless air pressure measuring apparatus of diameter is bigger, and air pressure is caused to subtract
It is small.The power of air pressure is detected by baroceptor, and is transferred on the inside chip of contactless air pressure measuring apparatus of diameter,
To converse the diameter value of bar.
Hydraulic system (not shown) is connected to by pipeline with seal nipple 13 for exporting high-pressure fluid.
Servo-system (not shown) is electrically connected with diameter measuring device 2 and hydraulic system respectively or communication mode connects
It connects, receive the measurement data of diameter measuring device 2 and regulates and controls the output hydraulic pressure of hydraulic system according to measurement data.
It is preferred that realizing sealing, the annular sap cavity by two groups of self-tightening type v-rings 14 between ontology 12 and die sleeve 11
9 are located between two groups of self-tightening type v-rings 14.
It is preferred that the undergauge section 1211 of 12 inner hole B121 of ontology is taper hole, the taper hole is from undergauge section 1211 to sizing section
1212 orient diameter is tapered, and when the cone angle of taper hole is bigger, blank and mold contact segment length are shorter, deforms with regard to Shaoxing opera
Strong, the cold-drawn power of generation is bigger；The cone angle of taper hole is smaller, then blank and mold contact segment length are longer, deforms also just
Slower, still, the cone angle of taper hole is too small, then the axial dimension of mold also lengthens accordingly, and contact area also increases, then cold-drawn
When frictional force also increase.By theoretical modeling analysis and experimental verification, the taper a of the taper hole chooses 12 ° ± 13 '.
It is preferred that the length of 12 inner hole sizing section 1212 of ontology, when sizing section is longer, blank and mold sizing section contact length
Increase, frictional force increases, and causes cold-drawn power to increase, moreover, if sizing section is too long, since the heat that friction generates increases when cold-drawn
It is more, it is easy to produce sticking phenomenon；Conversely, then cold-drawn power reduces, but the length of sizing section is too in short-term, mould when sizing section is shorter
Have easy to wear and leads to deformity, it is difficult to guarantee the dimensional accuracy of product, meanwhile, it can also shorten the service life of mold, so fixed
The length of diameter section is not answered too long or too short, and by theoretical modeling analysis and experimental verification, the sizing segment length L chooses 5mm
±0.1mm。
Bar formed precision control method, applied to high-precision Cold drawing rod system described in the present embodiment, steps are as follows:
S01 requires draw diameter value according to the size datum value and technique of a collection of bar, and selection has best sizing hole
The reducing cold drawing die of diameter.
S02 before drawing, is measured by the diameter measuring device outside ontology inner hole B undergauge section to spike pulling material
Diameter, further according to spike pulling material diameter and technique require draw diameter to determine its best sizing section aperture, further according to best fixed
Diameter hole diameter determines hydraulic system output hydraulic pressure, and servo system control hydraulic system output phase answers hydraulic high-pressure fluid to enter ring
Shape sap cavity, by sizing section aperture compression to the corresponding best sizing section aperture of spike pulling material.
In this step, the diameter before a collection of bar drawing varies, wherein the bigger bar of diameter, drawing tube reducing
Amount is also bigger, and the residual stress after drawing is also bigger, and the diameter springback capacity after drawing is also bigger；Therefore, bigger for diameter
Bar answers enlarged relative hydraulic system output hydraulic pressure, reduces ontology sizing section aperture accordingly, is returned with making up the diameter after drawing
Bullet amount, and then guarantee the dimensional uniformity after a collection of bar drawing.
In this step, hydraulic system output hydraulic pressure is higher, and sizing section aperture is compressed smaller, corresponding pass between the two
It is calculated before tying up to cold-drawn by simulation and Experimental Calibration is measured, be known quantity.
S03, bar by external force drawing, pass sequentially through undergauge section, sizing section and the outlet section of ontology inner hole B and by cold-drawn at
Type, bar are surveyed after the discharge of the outlet section of ontology inner hole B by the diameter measuring device outside ontology inner hole B outlet section
Diameter after measuring cold-drawn, measurement feedback to servo-system, if meeting technique requirement, servo-system does not issue control and refers to
It enables；If being unsatisfactory for technique requirement, servo-system controls hydraulic system fine tuning output hydraulic pressure size immediately, to change sizing hole
Diameter proposes high-precision purpose to reach.
In this step, fine tuning rule is that the diameter after cold-drawn is greater than technique required value, hydraulic system output hydraulic pressure pressure phase
It should be turned up；Conversely, the diameter after cold-drawn is less than technique required value, hydraulic system output hydraulic pressure pressure is accordingly reduced.
Embodiment 2:
As shown in fig. 6, the present embodiment is compared with Example 1, difference is only that: diameter measuring device 2 has one, is located at
Close to the outside of 12 inner hole B121 undergauge section 1211 of ontology, for measuring the blank diameter before cold-drawn.
Bar formed precision control method, applied to high-precision Cold drawing rod system described in the present embodiment, steps are as follows:
S01 requires draw diameter value according to the size datum value and technique of a collection of bar, and selection has best sizing hole
The reducing cold drawing die of diameter.
S02 before drawing, is measured by the diameter measuring device outside ontology inner hole B undergauge section to spike pulling material
Diameter, further according to spike pulling material diameter and technique require draw diameter to determine its best sizing section aperture, further according to best fixed
Diameter hole diameter determines hydraulic system output hydraulic pressure, and servo system control hydraulic system output phase answers hydraulic high-pressure fluid to enter ring
Shape sap cavity, by sizing section aperture compression to the corresponding best sizing section aperture of spike pulling material.
In this step, the diameter before a collection of bar drawing varies, wherein the bigger bar of diameter, drawing tube reducing
Amount is also bigger, and the residual stress after drawing is also bigger, and the diameter springback capacity after drawing is also bigger；Therefore, bigger for diameter
Bar answers enlarged relative hydraulic system output hydraulic pressure, reduces ontology sizing section aperture accordingly, is returned with making up the diameter after drawing
Bullet amount, and then guarantee the dimensional uniformity after a collection of bar drawing.
In this step, hydraulic system output hydraulic pressure is higher, and sizing section aperture is compressed smaller, corresponding pass between the two
It is calculated before tying up to cold-drawn by simulation and Experimental Calibration is measured, be known quantity.
S03, bar by external force drawing, pass sequentially through undergauge section, sizing section and the outlet section of ontology inner hole B and by cold-drawn at
Type.
Technical effect of the invention is aided in illustrating by experimental data:
With 32.4 3 kinds of cold-drawn mould cold-drawn φ 31.6, φ 32.0, φ different blanks after optimization, at various pressures
Error it is as shown in table 1 below:
Table 1:
The results showed that cold-drawn precision is extremely after reducing cold drawing die is optimized under the action of same pressure
A grade is improved less.For the blank of φ 31.6, its cold-drawn error is 21um under conditions of applying the pressure of 10Mp, is reached
IT7 class precision；For the blank of φ 32.0, its cold-drawn error is 20um under conditions of applying the pressure of 20Mp, reaches IT7
Class precision；For the blank of φ 32.4, its cold-drawn error is 18um under conditions of applying the pressure of 30Mp, reaches IT7 grades of essences
Degree.Therefore, cold-drawn precision, can be improved at least one grade by the size for adjusting the hydraulic pressure being applied on cold drawing die.
Claims (6)
1. high-precision Cold drawing rod system, it is characterized in that: including reducing cold drawing die, diameter measuring device (2), hydraulic system
And servo-system；
Reducing cold drawing die includes die sleeve (11), ontology (12) and seal nipple (13)；
Die sleeve (11) is in sleeve shaped, interior to be equipped with the inner hole A (111) being packed into for ontology (12), and inner hole A (111) penetrates through die sleeve
(11) both ends of the surface are inside additionally provided with from die sleeve (11) outer wall and penetrate through to the fluid channel (112) of die sleeve (11) inner hole A (111)；
Ontology (12) is in socket type, interior to be equipped with the inner hole B (121) passed through for blank, and inner hole B (121) penetrates through ontology (12)
Both ends of the surface, inner hole B (121) are successively arranged undergauge section (1211), sizing section (1212) and outlet section from one end to the other end
(1213), the outer wall of ontology (12) is equipped with annular groove (122), the position of annular groove (122) and the position of sizing section (1212)
It is corresponding；Ontology (12) is sealingly mounted in the inner hole A (111) of die sleeve (11), and affixed by screw and die sleeve (11), ontology
(12) form annular sap cavity (9) between inner hole A (111) hole wall of annular groove (122) and die sleeve (11), annular sap cavity (9) with
The fluid channel (112) of die sleeve (11) is connected to；
Seal nipple (13) is fixedly mounted in the fluid channel (112) of die sleeve (11), and is located at fluid channel (112) in die sleeve
(11) opening of outer wall；
Diameter measuring device (2) is used to measure the blank diameter before cold-drawn and/or after cold-drawn, is located at outside reducing cold drawing die
Portion, and the inner hole B (121) of face ontology (12)；
Hydraulic system is connected to by pipeline with seal nipple (13) for exporting high-pressure fluid；
Servo-system is connect with diameter measuring device and hydraulic system electrical connection or communication mode respectively, receives diameter measurement dress
The measurement data set and the output hydraulic pressure for regulating and controlling hydraulic system according to measurement data.
2. high-precision Cold drawing rod system as described in claim 1, it is characterized in that: diameter measuring device includes contactless gas
Straightening cable diameter gauge and baroceptor, baroceptor are located in the gas channels of contactless air pressure measuring apparatus of diameter.
3. high-precision Cold drawing rod system as claimed in claim 1 or 2, it is characterized in that: between ontology (12) and die sleeve (11)
Sealing is realized by two groups of self-tightening type v-rings (14), and the annular sap cavity (9) is located at two groups of self-tightening type v-rings
(14) between.
4. high-precision Cold drawing rod system as claimed in claim 3, it is characterized in that: the undergauge section of ontology (12) inner hole B (121)
It (1211) is taper hole, the taper hole tapered, cone of the taper hole from undergauge section (1211) to the orient diameter of sizing section (1212)
Spending a is 12 ° ± 13 '；The length L of sizing section (1212) is 5mm ± 0.1mm.
5. high-precision Cold drawing rod system as claimed in claim 4 is set it is characterized in that: diameter measuring device (2) has one
In the outside close to ontology (12) inner hole B (121) undergauge section (1211).
6. high-precision Cold drawing rod system as claimed in claim 4, it is characterized in that: when there are two diameter measuring devices (2),
In an outside being located at close to ontology (12) inner hole B (121) undergauge section (1211), another is located at close to ontology (12) inner hole
The outside of B (121) outlet section (1213).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810218676.6A CN108500072B (en) | 2018-03-16 | 2018-03-16 | High-precision Cold drawing rod system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810218676.6A CN108500072B (en) | 2018-03-16 | 2018-03-16 | High-precision Cold drawing rod system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108500072A CN108500072A (en) | 2018-09-07 |
| CN108500072B true CN108500072B (en) | 2019-06-28 |
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ID=63377745
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810218676.6A Expired - Fee Related CN108500072B (en) | 2018-03-16 | 2018-03-16 | High-precision Cold drawing rod system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112337989B (en) * | 2020-10-19 | 2021-07-13 | 浙江晶日科技股份有限公司 | Multifunctional rod cold-drawing die set and cold-drawing method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3032106A1 (en) * | 1980-08-22 | 1982-03-04 | Mannesmann AG, 4000 Düsseldorf | Stepped dia. tube continuous prodn. - uses subsequent drawing operations with variable dia. dies and mandrels |
| CN201076874Y (en) * | 2007-08-17 | 2008-06-25 | 株洲硬质合金集团有限公司 | Wire-drawing die |
| WO2015013349A1 (en) * | 2013-07-24 | 2015-01-29 | Cleveland State University | Methods for the development of commercial scale nano-engineered ultraconductive copper wire |
| CN104607487A (en) * | 2014-12-10 | 2015-05-13 | 中国兵器工业第五九研究所 | Extruding method for two-dimension function-variation continuous variable-cross-section profile |
| CN105728482A (en) * | 2016-05-11 | 2016-07-06 | 无锡常欣科技股份有限公司 | Sizing-adjustable mold |
-
2018
- 2018-03-16 CN CN201810218676.6A patent/CN108500072B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3032106A1 (en) * | 1980-08-22 | 1982-03-04 | Mannesmann AG, 4000 Düsseldorf | Stepped dia. tube continuous prodn. - uses subsequent drawing operations with variable dia. dies and mandrels |
| CN201076874Y (en) * | 2007-08-17 | 2008-06-25 | 株洲硬质合金集团有限公司 | Wire-drawing die |
| WO2015013349A1 (en) * | 2013-07-24 | 2015-01-29 | Cleveland State University | Methods for the development of commercial scale nano-engineered ultraconductive copper wire |
| CN104607487A (en) * | 2014-12-10 | 2015-05-13 | 中国兵器工业第五九研究所 | Extruding method for two-dimension function-variation continuous variable-cross-section profile |
| CN105728482A (en) * | 2016-05-11 | 2016-07-06 | 无锡常欣科技股份有限公司 | Sizing-adjustable mold |
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| Publication number | Publication date |
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| CN108500072A (en) | 2018-09-07 |
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