CN102941271B - The spin-on process of conductive contact finger neck part and supporting spinning processing device - Google Patents
The spin-on process of conductive contact finger neck part and supporting spinning processing device Download PDFInfo
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- CN102941271B CN102941271B CN201210340368.3A CN201210340368A CN102941271B CN 102941271 B CN102941271 B CN 102941271B CN 201210340368 A CN201210340368 A CN 201210340368A CN 102941271 B CN102941271 B CN 102941271B
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- conductive contact
- contact finger
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- tubular blank
- core rod
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- 238000009987 spinning Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000008569 process Effects 0.000 title abstract description 6
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000003672 processing method Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 230000002093 peripheral effect Effects 0.000 claims description 14
- 230000003014 reinforcing effect Effects 0.000 claims description 11
- 238000007493 shaping process Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 abstract description 11
- 230000009466 transformation Effects 0.000 abstract description 6
- 239000007787 solid Substances 0.000 abstract description 3
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Abstract
Conductive contact finger neck part spinning processing method of the present invention is the while of applying radial load to conductive contact finger tubular blank in rotary pressing processing process, axis along core utilizes pressure-loaded mechanism to apply axial compressive force to conductive contact finger tubular blank, be subject to the radial compression applied of spinning wheel once conductive contact finger neck part and be stretched thinning, the axial compressive force be applied on conductive contact finger tubular blank can promote material in real time and draw thin section bit flow to neck part, stretching place is supplemented in time, conductive contact finger neck part is avoided to occur drawing thin phenomenon, this rotary pressing processing is simple to operate, implement very convenient, it effectively ensure that the wall thickness of conductive contact finger neck part in rotary pressing processing process, thus ensure that the conductive contact finger adopting rotary pressing processing to make has good through-current capability, meet the requirement to bypass isolating switch conductive contact finger passage section effective area in 1,000,000 volts of power transmission and transformation lines, for having established solid foundation by 6300 peace electric currents smoothly.
Description
Technical field
The invention belongs to rotary pressing processing technical field, say the spinning processing method relating to a kind of extra-high voltage conductive contact finger neck part and the spinning processing device being exclusively used in enforcement the method accurately.
Background technology
Along with development and the growth in State Grid market, extra-high voltage big current power transmission and transformation product becomes the leading products of electricity market, and the demand of 1,000,000 volts of series of products constantly increases.Especially bypass isolating switch in 1,000,000 volts of power transmission and transformation lines for increase conveying electrical power, keep circuit stable etc. in important role, and conductive contact finger is the vital part in bypass isolating switch, and its through-current capability requires to reach 6300A.This bypass isolating switch conductive contact finger is made primarily of the T2Y copper coin of 4 millimeters thick, the tensile strength of this material is 295 MPas, intensity is lower, ductility is very good, its structure is as Fig. 1, Fig. 2, shown in Fig. 3, this conductive contact finger entirety is in vase-like structure, it is primarily of mouth cylindrical part 1, neck part 2, 4 compositions bottom body portion 3 and bottle, wherein, bottle bottom 4 and mouth cylindrical part 1 are annulus tubular construction, body portion 3 is that internal diameter is by the 4 frustum of a cone tubular constructions increased gradually to mouth cylindrical part 1 direction bottom bottle, the neck part 2 be connected between mouth cylindrical part and 1 body portion 3 is the annular throat structure of other each several part of circle internal diameter.At present, the neck part of this conductive contact finger comparatively bothers due to the reason processing that its Material Strength is lower, ductility is good, processing cost is higher, if and adopt the lower rotary pressing processing of processing cost, spinning wheel can produce stretching action to the neck part 2 of conductive contact finger, be easy to cause the neck part of conductive contact finger to be drawn thin, the thickness of its thinnest part only has 1.5 millimeters, the through-current capability of conductive contact finger is a greater impact, does not meet the requirement to the effective area of bypass isolating switch conductive contact finger passage section in 1,000,000 volts of power transmission and transformation lines.
Summary of the invention
The object of the invention is: the spinning processing method that a kind of conductive contact finger neck part is provided, to solve the problem that conventional spun processing can not ensure conductive contact finger neck part wall thickness, thus effectively reduce the processing cost of conductive contact finger.
The technical scheme of conductive contact finger neck part spinning processing method of the present invention is: a kind of spinning processing method of conductive contact finger neck part, comprise the following steps: the first step, the tubular blank of conductive contact finger to be sleeved on core and to be fixed on spinning machine by core; Second step, spinning machine drives tubular blank to rotate along the axis of core by core, with spinning wheel along core radial direction to tubular blank apply radial pressure and move axially carry out spinning while along core axis from one end to the other side to tubular blank apply axial compressive force, thus change flow of material to, ensure the shaping of conductive contact finger neck part.
The present invention also provides simultaneously and is a kind ofly exclusively used in the conductive contact finger spinning processing device implementing above-mentioned spinning processing method, the technical scheme of this spinning processing device is: a kind of spinning processing device of conductive contact finger neck part, comprise for supporting with conductive contact finger tubular blank internal face the core coordinated, the outer surface of core offers the circumferential groove in its end portion for coordinating shaping conductive contact finger neck part with spinning wheel, be provided with in the front end of core and axially the annular reinforcing that conductive contact finger tubular blank corresponding end applies axial compressive force covered along core under driving in pressure-loaded mechanism, the block position limiting structure for coordinating with the axial block of conductive contact finger tubular blank corresponding end is provided with in the rear end of core.
Described annular reinforcing cover comprises guide part that the slip sleeve that to lead with core coordinates and the connecting portion for the pressure-loaded mechanism that is in transmission connection, and is provided with the end cap for coordinating with conductive contact finger tubular blank corresponding end pushing tow in the rear end of guide part.
Described core comprises for being coaxially installed on mandrel in conductive contact finger tubular blank and for being supported on the core rod between mandrel outer peripheral face and conductive contact finger tubular blank internal face, described core rod is in the axial direction by for supporting with bottom conductive contact finger tubular blank bottle and body portion the first half that coordinates and connecting to form for supporting with conductive contact finger tubular blank mouth cylindrical part the latter half two parts coordinated, and described circumferential groove in its end portion is opened in forward and backward two-part junction.
Described first half core is provided with the annular portion for coordinating with conductive contact finger tubular blank bottle bottom support and coordinates for supporting with conductive contact finger tubular blank body portion, the frusto-conical portion that diameter is increased to bottleneck direction gradually by annular portion, this first half core rod consists of valvular structure by the first core rod of a pair relative symmetry setting and the second core rod of a pair relative symmetry setting in the circumferential, the outer surface of described first core rod and the second core rod is equipped with for coincideing the arc surface that coordinates and for coincideing the frusto-conical face coordinated with the body portion internal face of conductive contact finger tubular blank with the bottle bottom interior wall face of conductive contact finger tubular blank, the outer surface of described two first core rods and the outer surface of two second core rods surround circle, the inner surface of described two first core rods is opposing parallel and tangent with mandrel outer peripheral face plane, the inner surface of described two second core rods forms by the plane of fitting with two first core rod inner surfaces respectively and with the mandrel outer peripheral face arc surface coordinated that coincide.
Two first described core rods and two second core rods are fixedly connected with latter half core rod respectively by connecting bolt.
The guide part of described annular reinforcing cover and the core back-end slip sleeve that leads coordinates.
Conductive contact finger neck part spinning processing method of the present invention is the while of applying radial load to conductive contact finger tubular blank in rotary pressing processing process, axis along core utilizes pressure-loaded mechanism to apply axial compressive force to conductive contact finger tubular blank, be subject to the radial compression applied of spinning wheel once conductive contact finger neck part and be stretched thinning, the axial compressive force be applied on conductive contact finger tubular blank can promote material in real time and draw thin section bit flow to neck part, stretching place is supplemented in time, conductive contact finger neck part is avoided to occur drawing thin phenomenon, this rotary pressing processing is simple to operate, implement very convenient, it effectively ensure that the wall thickness of conductive contact finger neck part in rotary pressing processing process, the thickness of its thinnest part is greater than 3 millimeters, thus ensure that the conductive contact finger adopting rotary pressing processing to make has good through-current capability, meet the requirement to bypass isolating switch conductive contact finger passage section effective area in 1,000,000 volts of power transmission and transformation lines, for having established solid foundation by 6300 peace electric currents smoothly.
Accompanying drawing explanation
Fig. 1 is the front view of conductive contact finger involved in the present invention;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the C-C sectional view in Fig. 2;
Fig. 4 is the using state front view of spinning processing device specific embodiment of the present invention;
Fig. 5 is spinning processing device using state stereogram in figure;
Fig. 6 is the A-A sectional view in Fig. 4;
Fig. 7 is the B-B sectional view in Fig. 4;
Fig. 8 is the core shaft structure stereogram in Fig. 6;
Fig. 9 is the first core rod front view in Fig. 6;
Figure 10 is the first core rod stereogram in Fig. 6;
Figure 11 is the second core rod front view in Fig. 6;
Figure 12 is the second core rod stereogram in Fig. 6;
Figure 13 is latter half core rod stereogram in Fig. 6.
Detailed description of the invention
Conductive contact finger spinning processing method of the present invention is mainly while coordinating the neck part in throat structure in shaping conductive contact finger with core with spinning wheel, axis direction along core applies axial compressive force to conductive contact finger tubular blank, thus change flow of material to, guarantee that the thinnest part of conductive contact finger neck part is greater than 3 millimeters.For realizing this spinning processing method, the invention provides a kind of spinning processing device being exclusively used in this spinning processing method of enforcement, the specific embodiment of this spinning processing device is as shown in Fig. 4 to Figure 13, this processing unit (plant) has one for supporting with conductive contact finger tubular blank 60 internal face the core coordinated, this core is primarily of the mandrel 20 for being coaxially located in conductive contact finger tubular blank 60 and form for the core rod be supported between mandrel 20 outer peripheral face and conductive contact finger tubular blank 60 internal face, because conductive contact finger tubular blank 60 neck part 2 is the throat structure that internal diameter is less, form removal after completing for convenience of spinning, this core rod in the axial direction by for bottom the bottle of conductive contact finger tubular blank 60 4 and body portion 3 support the first half 21 that coordinates and connect to form for supporting with the mouth cylindrical part 1 of conductive contact finger tubular blank 60 latter half 22 two parts coordinated, before this, rear two parts core rod 21, the junction outer peripheral face of 22 is equipped with the circumferential groove in its end portion 24 for coordinating shaping conductive contact finger tubular blank 60 neck part 2 with spinning wheel 40.Body portion 3 due to the conductive contact finger tubular blank 60 in the present embodiment is that diameter is by the 4 frustum of a cone tubular constructions increased gradually to mouth cylindrical part 1 direction bottom bottle, thus corresponding on the outer surface of first half core rod 21 frusto-conical face being provided with this frustum of a cone tubular construction body portion 3 inwall of support, for realizing this core rod form removal, in the present embodiment, this first half core rod 21 is interlocked by the first core rod 21-1 of a pair relative symmetry setting and the second core rod 21-2 of a pair relative symmetry setting in the circumferential and surrounds, the cross section that the outer surface of this two first core rod 21-1 and the outer surface of two second core rod 21-2 surround is for circular, overall in valvular structure, wherein, be equipped with for coincideing the arc surface that coordinates and for coincideing the frusto-conical face coordinated with body portion 3 internal face of conductive contact finger tubular blank 60 with 4 internal faces bottom the bottle of conductive contact finger tubular blank 60 at the outer surface of two first core rod 21-1 and two second core rod 21-2, the inner surface of two first core rod 21-1 is opposing parallel and tangent with mandrel 20 outer peripheral face plane, the inner surface of two second core rod 21-2 forms by the plane of fitting with two first core rod 21-1 inner surfaces respectively and with the mandrel 20 outer peripheral face arc surface coordinated that coincide.Latter half core rod 22 is contained in the circular ring structure on mandrel 20 for slip cap, and two first core rod 21-2 in first half core rod 21 and two second core rod 21-2 are all connected by the corresponding screwed hole connecting bolt that arranges and latter half core rod 22.
For realizing applying axial compressive force to conductive contact finger tubular blank 60, it goes back radial convex and is provided with land 25 for coordinating to block with 4 respective shaft bottom the bottle of conductive contact finger tubular blank 60 on the outer peripheral face of mandrel 20, be convexly equipped with for spacing the turn edge 25-1 that coordinate radial with 4 outside wall surface bottom the bottle of conductive contact finger tubular blank 60 in the outer rim of land 25 along the axis of mandrel 20, one end guiding slip cap corresponding to the mouth cylindrical part 1 of conductive contact finger tubular blank 60 at mandrel 20 is equipped with the afterburning cover 30 of an annular, this annular reinforcing cover 30 has axially to extend gives prominence to mandrel 20 end face, for the connecting portion of Bonding pressure load maintainer and to lead the guide part be slidably matched with mandrel 20 outer peripheral face, be provided with for axially contacting the end cap 30-1 coordinated with the opening's edge of conductive contact finger tubular blank 60 mouth cylindrical part 1 at one end radial convex of guide part away from connecting portion.In the present embodiment, if for being front end in the one end adding man-hour and spinning machine chuck 10 clamping engagement on mandrel 20, its other end is rear end, above-mentioned land 25 is integrally fixedly arranged on mandrel 20 on the outer peripheral face of its front end, annular afterburning cover 30 guiding is slidedly assemblied in the rear end of mandrel 20, meanwhile, be installed with between the front end face and latter half core 22 of the afterburning cover of annular 30 front end end cap 30-1 for driving at afterburning 30 load maintainers that are stressed that cover of annular and produce the force gap of axial displacement.
During use, first the front end of mandrel 20 is fixedly clamped in the chuck 10 of spinning machine, then conductive contact finger tubular blank 60 to be inserted in mandrel 20 by its bottle of bottom 4 and to make bottom the bottle of conductive contact finger tubular blank 60 4 to coordinate with land 25 block on mandrel 20, then by two first core rod 21-1 and two second core rod 21-2 to being combined into first half core rod 21 and being inserted in the annular space between mandrel 20 and conductive contact finger tubular blank 60 by the mouth cylindrical part 1 of conductive contact finger tubular blank 60, again latter half core rod 22 is inserted in mandrel 20 and is connected and fixed by two first core rod 21-1 in connecting bolt 23 first half core rod 21 and two second core rod 21-2 correspondences, finally reinforcing cover 30 be enclosed within the rear end of mandrel 20 and hold out against with pressure-loaded mechanism.In the present embodiment, this pressure-loaded mechanism adopts existing tailstock centre on spinning machine.Start spinning machine, the chuck 10 of spinning machine drives conductive contact finger tubular blank 60 along the axis High Rotation Speed of mandrel 20 by mandrel 20, then the annular groove aiming at mandrel surface with spinning wheel 40 applies radial pressure along mandrel 20 radial direction to conductive contact finger tubular blank 60, while applying radial pressure, spinning wheel moves axially along mandrel 20, realize the rotary pressing processing to conductive contact finger tubular blank 60 neck part 2, while spinning, with tailstock centre along the axis of mandrel 20 to the continual applying axial compressive force of conductive contact finger tubular blank 60, thus make material after being subject to axial compressive force, be spun the partial-flow of wheel 40 tension-thining to conductive contact finger tubular blank 60 neck part 2, barrel is stretched thinning phenomenon to avoid conductive contact finger neck part 2 to occur when spinning, guarantee that the thickness of conductive contact finger neck part barrel thinnest part is greater than 3 millimeters, thus effectively ensure that the through-current capability of conductive contact finger, this conductive contact finger is made to meet requirement to bypass isolating switch conductive contact finger passage section effective area in 1,000,000 volts of power transmission and transformation lines, for the smooth electric current by 6300A has established solid foundation.
The present invention is not limited to above-described embodiment, and above-mentioned core rod also can overallly adopt friable material or low melting material to make, and can by direct orcible entry core rod or mode of heating, core rod be melted after extraction mandrel and realize form removal during form removal; If the body portion of conductive contact finger tubular blank be the tubular structure that internal diameter is identical bottom bottle, go corresponding first half core rod also can adopt the cylindrical structure be set on mandrel, being located at the land that mandrel front end coordinates with conductive contact finger tubular blank block adopts thread connecting mode spinning on mandrel, first half core rod is directly extracted after can laying down land during form removal; Pressure-loaded mechanism for applying driving force to the afterburning cover of annular can also adopt separately establish cylinder, hydraulic cylinder, electric cylinder mechanism; Mandrel also can adopt square axis or six square shafts etc., and afterburning cover can also adopt with the guiding sliding matching structure between mandrel and axially offer pilot hole on mandrel free end end face, the coaxial fixing axis of guide be slidably matched that leads with pilot hole on reinforcing cover; Afterburning cover radial direction can also be fixed for the end plate that coordinates with pressure-loaded mechanism pushing tow away from one end of mandrel, and it is all within protection scope of the present invention.
Claims (5)
1. a spinning processing method for conductive contact finger neck part, is characterized in that, the method comprises the following steps: the first step, to be sleeved on by conductive contact finger tubular blank on core and to be fixed on spinning machine by core; Second step, spinning machine drives conductive contact finger tubular blank to rotate along the axis of core by core, with spinning wheel along core radial direction to conductive contact finger tubular blank apply radial pressure and move axially carry out spinning while utilize pressure-loaded mechanism along core axis from one end to the other side to conductive contact finger tubular blank apply axial compressive force, thus change flow of material to, ensure the shaping of conductive contact finger neck part; said method is implemented by conductive contact finger spinning processing device, conductive contact finger spinning processing device comprises for supporting with conductive contact finger tubular blank internal face the core coordinated, the outer surface of core offers the circumferential groove in its end portion for coordinating shaping conductive contact finger neck part with spinning wheel, be provided with in the rear end of core and axially the annular reinforcing that conductive contact finger tubular blank corresponding end applies axial compressive force covered along core under driving in pressure-loaded mechanism, the block position limiting structure for coordinating with the axial block of conductive contact finger tubular blank corresponding end is provided with in the front end of core, described annular reinforcing cover comprises guide part that the slip sleeve that to lead with core coordinates and the connecting portion for the pressure-loaded mechanism that is in transmission connection, described connecting portion is in the rear end of guide part, the end cap for coordinating with conductive contact finger tubular blank corresponding end pushing tow is provided with in the front end of guide part, described core comprises for being coaxially installed on mandrel in conductive contact finger tubular blank and for being supported on the core rod between mandrel outer peripheral face and conductive contact finger tubular blank internal face, described core rod is in the axial direction by for supporting with bottom conductive contact finger tubular blank bottle and body portion the first half that coordinates and connecting to form for supporting with conductive contact finger tubular blank mouth cylindrical part the latter half two parts coordinated, described circumferential groove in its end portion is opened in first half and the two-part junction of latter half, be installed with between the front end face and latter half core rod of the front end end cap of the afterburning cover of annular for driving at the afterburning load maintainer that is stressed that covers of annular and produce the force gap of axial displacement.
2. one kind is exclusively used in the conductive contact finger spinning processing device of the spinning processing method implementing conductive contact finger neck part as claimed in claim 1, it is characterized in that, comprise for supporting with conductive contact finger tubular blank internal face the core coordinated, the outer surface of core offers the circumferential groove in its end portion for coordinating shaping conductive contact finger neck part with spinning wheel, be provided with in the rear end of core and axially the annular reinforcing that conductive contact finger tubular blank corresponding end applies axial compressive force covered along core under driving in pressure-loaded mechanism, the block position limiting structure for coordinating with the axial block of conductive contact finger tubular blank corresponding end is provided with in the front end of core, described annular reinforcing cover comprises guide part that the slip sleeve that to lead with core coordinates and the connecting portion for the pressure-loaded mechanism that is in transmission connection, described connecting portion is in the rear end of guide part, the end cap for coordinating with conductive contact finger tubular blank corresponding end pushing tow is provided with in the front end of guide part, described core comprises for being coaxially installed on mandrel in conductive contact finger tubular blank and for being supported on the core rod between mandrel outer peripheral face and conductive contact finger tubular blank internal face, described core rod is in the axial direction by for supporting with bottom conductive contact finger tubular blank bottle and body portion the first half that coordinates and connecting to form for supporting with conductive contact finger tubular blank mouth cylindrical part the latter half two parts coordinated, described circumferential groove in its end portion is opened in first half and the two-part junction of latter half, be installed with between the front end face and latter half core rod of the front end end cap of the afterburning cover of annular for driving at the afterburning load maintainer that is stressed that covers of annular and produce the force gap of axial displacement.
3. conductive contact finger spinning processing device according to claim 2, it is characterized in that, first half core rod is provided with the annular portion for coordinating with conductive contact finger tubular blank bottle bottom support and coordinates for supporting with conductive contact finger tubular blank body portion, the frusto-conical portion that diameter is increased to mouth cylindrical part direction gradually by annular portion, first half core rod consists of valvular structure by the first core rod of a pair relative symmetry setting and the second core rod of a pair relative symmetry setting in the circumferential, the outer surface of the first core rod and the second core rod is equipped with for coincideing the arc surface that coordinates and for coincideing the frusto-conical face coordinated with the body portion internal face of conductive contact finger tubular blank with the bottle bottom interior wall face of conductive contact finger tubular blank, the outer surface of two first core rods and the outer surface of two second core rods surround circle, the inner surface of two first core rods is opposing parallel and tangent with mandrel outer peripheral face plane, the inner surface of two second core rods forms by the plane of fitting with two first core rod inner surfaces respectively and with the mandrel outer peripheral face arc surface coordinated that coincide.
4. conductive contact finger spinning processing device according to claim 3, is characterized in that, two first core rods and two second core rods are fixedly connected with latter half core rod respectively by connecting bolt.
5. conductive contact finger spinning processing device according to claim 2, is characterized in that, the guide part of described annular reinforcing cover and the core back-end slip sleeve that leads coordinates.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210340368.3A CN102941271B (en) | 2012-09-14 | 2012-09-14 | The spin-on process of conductive contact finger neck part and supporting spinning processing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210340368.3A CN102941271B (en) | 2012-09-14 | 2012-09-14 | The spin-on process of conductive contact finger neck part and supporting spinning processing device |
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| CN102941271A CN102941271A (en) | 2013-02-27 |
| CN102941271B true CN102941271B (en) | 2015-10-28 |
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| CN103331355B (en) * | 2013-06-07 | 2015-08-05 | 浙江水利水电专科学校 | Non-straight cavity wall cup cylinder cold-extruded spinning composite precision forging forming method |
| CN104107853B (en) * | 2014-06-30 | 2016-08-24 | 无锡曙光模具有限公司 | The rotary pressing moulding device of metal thin-wall tubular workpiece |
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Address after: South East of Pingdingshan city in Henan province 467001 No. 22 Applicant after: Pinggao Electric Co., Ltd., Henan Applicant after: Pinggao Group Co., Ltd. Applicant after: State Grid Corporation of China Address before: South East of Pingdingshan city in Henan province 467001 No. 23 Applicant before: Pinggao Electric Co., Ltd., Henan Applicant before: Pinggao Group Co., Ltd. Applicant before: State Grid Corporation of China |
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