CN102873387B - Groove milling method for conductive contact finger and groove milling die special for implementing method - Google Patents
Groove milling method for conductive contact finger and groove milling die special for implementing method Download PDFInfo
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- CN102873387B CN102873387B CN201210340286.9A CN201210340286A CN102873387B CN 102873387 B CN102873387 B CN 102873387B CN 201210340286 A CN201210340286 A CN 201210340286A CN 102873387 B CN102873387 B CN 102873387B
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- contact finger
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- groove milling
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- 238000003801 milling Methods 0.000 title claims abstract description 113
- 238000000034 method Methods 0.000 title claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 238000009987 spinning Methods 0.000 claims description 5
- 230000008844 regulatory mechanism Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims description 2
- 238000003754 machining Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 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
- 230000007246 mechanism Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
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Abstract
The invention discloses a groove milling method and a groove milling die for a conductive contact finger. A conductive contact finger barrel-shaped blank is fixed on the groove milling die through a mandrel and front and rear chucks; ring grooves into which the two ends of the conductive contact finger barrel-shaped blank are correspondingly inserted are formed on the rear end face of the front chuck and the front end face of the rear chuck; in the milling process of barrel wall through grooves, the conductive contact finger barrel-shaped blank is fixedly sleeved on the groove milling die through the front and rear chucks; the rotation angle of the conductive contact finger barrel-shaped blank is controlled by a dividing head; and the through grooves on the barrel wall of the conductive contact finger barrel-shaped blank can be machined in sequence as long as a milling cutter is aligned with a milling cutter groove on the groove milling die. By the milling method, the machining accuracy of the through grooves on the barrel wall of the conductive contact finger is high; the groove milling die supports the inner wall of the conductive contact finger barrel-shaped blank during machining, so that the barrel wall of the conductive contact finger is effectively prevented from being deformed due to acting force applied by the milling cutter during milling, the yield of products is improved, and the production cost of the product is reduced.
Description
Technical field
The invention belongs to machining technique field, definite saying relates to a kind of milling method of slotting around even circumferential on conductive contact finger and is exclusively used in the groove milling mould of implementing the method.
Background technology
Along with development and the growth in State Grid market, the large electric current power transmission and transformation of extra-high voltage 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 carrying electrical power, keep the aspect important roles such as circuit is stable, and conductive contact finger is the vital part in bypass isolating switch, its through-current capability requires to reach 6300A.The structure of the conductive contact finger of this bypass isolating switch as shown in Figure 1 and Figure 2, this conductive contact finger is mainly comprised of nozzle portion 1, barrel 3 and cylinder bottom 4, between nozzle portion 1 and barrel 3, be provided with the neck part 2 of throat structure, making this conductive contact finger be profile is vase-shaped tubular structure, simultaneously, some around offering of even circumferential on nozzle portion 1, neck part 2 and the barrel 3 of conductive contact finger have a groove 5 that connects barrel inside and outside it, make to be circumferentially with on conductive contact finger 24 flap elasticity contact finger pieces, and the internal diameter of each elasticity contact finger piece equates.Each groove 5 in prior art on conductive contact finger is to adopt milling machine processing, but be that the T2Y copper coin of 4 millimeters thick is made owing to making the material of this conductive contact finger, the tensile strength of this material is 295 MPas, intensity is lower, ductility is very good, therefore on milling machine, groove milling adds and is very easy to because milling cutter active force produces distortion man-hour, thereby adopts conventional milling process cannot process qualified product.
Summary of the invention
The object of the invention is: a kind of groove milling method of conductive contact finger is provided, to solve conventional machining technique, easily causes the problem of conductive contact finger tubular blank distortion.
The technical scheme of the groove milling method of conductive contact finger of the present invention is: a kind of groove milling method of conductive contact finger, comprise the following steps: the first step, the tubular blank geometrical clamp of conductive contact finger is contained on groove milling mould and by groove milling mould, is arranged on the dividing head of milling machine, and the internal face at conductive contact finger tubular blank both ends is joined and is incorporated in groove milling mould and away from even circumferential on one end outer surface of dividing head, offers the milling cutter groove passing through for milling cutter with this groove milling mould support respectively; Second step, allow milling cutter aim at after the milling cutter groove on groove milling mould along the groove on the axis direction climb cutting cutter groove milling conductive contact finger tubular blank barrel of groove milling mould, complete one groove of every milling, all by dividing head, make the angle of the tubular blank rotation setting of conductive contact finger, along each milling cutter groove on groove milling mould, complete successively the Milling Process of each groove.
Milling cutter groove on described groove milling mould is, when first part of processing, the tubular blank of conductive contact finger is carried out to Milling Process formation together with groove milling mould.
The set angle of the each rotation of described dividing head is 15 °.
The present invention also provides a kind of groove milling mould of implementing said method that is exclusively used in simultaneously, the technical scheme of this groove milling mould is: a kind of conductive contact finger groove milling mould, comprise that mandrel and relative spacing for being coaxially located in conductive contact finger tubular blank are installed on mandrel for the chuck at conductive contact finger tubular blank two ends by axial clearance regulation mechanisms grip, described chuck comprises for being clamped in the front chuck of conductive contact finger tubular blank cylinder bottom and for being clamped in the rear chuck of conductive contact finger tubular blank nozzle portion, on the rear end face of front chuck and the front end face of rear chuck, offer respectively for the corresponding annular groove inserting in conductive contact finger tubular blank both ends, on the front end face of rear chuck, be also provided with for coincideing and support the carcass coordinating and evenly offer radially around circumference the milling cutter groove passing through for milling cutter on the outer peripheral face of rear chuck and carcass with conductive contact finger tubular blank neck part inner surface.
Described front chuck one is fixed on the front portion of mandrel, described rear chuck guiding is snug fit at mandrel rear portion, and described axial clearance regulation mechanism is that the external screw thread and the spinning that are opened in portion of core back-end contact with the rear end face of rear chuck the nut that holds out against coordinating on this mandrel external screw thread.
Described front chuck is mainly comprised of the locating ring that is radially fixed on the ring platform on mandrel outer peripheral face and be flush-mounted in ring platform rear end face, and the annular groove on described fore-clamp back-end disk face consists of the gap between locating ring outer peripheral face and ring platform.
In the upper of described ring platform, by the screwed hole rotation of radially offering, be useful on the through hole of conductive contact finger tubular blank cylinder bottom and circumferentially locate the bolt coordinating.
Split setting between described rear chuck and carcass, the annular groove on described rear chuck front end face by the outer peripheral face of carcass and rear chuck outer rim, arrange forward turn edge between stay the gap of establishing to form.
Between described rear chuck and mandrel, by the corresponding square opening and prism arranging, only screw and close.
Conductive contact finger of the present invention is in the Milling Process of barrel groove, tubular blank at conductive contact finger is fixedly set on the corresponding groove milling mould arranging, by dividing head, control the anglec of rotation of conductive contact finger tubular blank, the milling cutter groove that only need make milling cutter aim on groove milling mould can process the groove on conductive contact finger tubular blank barrel successively, adopt its machining accuracy of groove on this milling method processing conductive contact finger barrel high, and add groove milling in man-hour mould the tubular blank inwall of conductive contact finger is supported, thereby the distortion that while effectively having prevented Milling Process, milling cutter active force causes conductive contact finger barrel, improved the qualification rate of product, reduced the production cost of product.
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 structural representation of groove milling mould specific embodiment of the present invention;
Fig. 4 is the three-dimensional exploded view of groove milling mould of the present invention.
The specific embodiment
Conductive contact finger groove milling mould of the present invention as shown in Figure 3, Figure 4, this groove milling mould has one for being coaxially located in the mandrel 10 in conductive contact finger tubular blank 20, one end of this mandrel 12 is the stiff end for coordinating with the clamping of milling machine dividing head chuck, at this stiff end, be provided with for the clamping part 10-1 with milling machine dividing head chuck 30 clamping engagement, the other end of mandrel 10 is free end.On mandrel 10, relative spacing is provided with a pair of for being clamped in respectively the chuck at conductive contact finger tubular blank 20 two ends, wherein, be clamped on 20 bottoms 4 of conductive contact finger tubular blank for front chuck, be clamped in conductive contact finger tubular blank 20 nozzle portion 1 places for rear chuck, at front chuck on the rear end face of rear chuck and after chuck on the front end face of front chuck, offer respectively the annular groove for plugging together with conductive contact finger tubular blank 20 corresponding ends.In the present embodiment, front chuck is fixedly arranged on the ring platform 11 on mandrel 10 stiff end outer peripheral faces by radial integrated and is flush-mounted in the locating ring 13 encircling in platform 11 rear end faces and forms, the annular groove of offering on fore-clamp back-end disk face stays the annular space of establishing to form by locating ring 13 outer peripheral faces and ring between platform 11, and the positioning bolt hole of offering by correspondence on ring platform 11 and locating ring 13 is installed with for the through hole with on 20 bottoms 4 of conductive contact finger tubular blank and coordinates with to the circumferential spacing bolt 12 of conductive contact finger tubular blank 20, rear chuck comprises that guiding slip cap is loaded on the disk body 15 on mandrel 10 free ends, disk body 15 at rear chuck is provided with for the identical carcass 14 coordinating that supports of neck part 2 inner surfaces with conductive contact finger tubular blank 20 on the front end face of front chuck, the guide part coordinating with disk body 15 and carcass 14 guiding on the free end of mandrel 10 is the square shaft section 10-2 that cross section is square, disk body 15 is all only screwed and closes by the corresponding square hole of offering in center and mandrel 10 with carcass 14, in the outer rim of the disk body 15 of rear chuck along axially convexing with of mandrel 10 the turn edge 15-1 parallel with mandrel 10 axis, on rear chuck front end face for staying the annular space established to form by turning edge on its disk body 15 between the inner ring surface of 15-1 and the outer peripheral face of carcass 14 with the conductive contact finger tubular blank 20 corresponding annular grooves that plug together of nozzle portion, at the free-ended terminal part of mandrel 10, be also provided with one end external screw thread 10-3 and be installed with disk body 15 rear end faces and contact the puller bolt 16 coordinating by this external screw thread 10-3, this puller bolt 16 and the external screw thread 10-3 coordinating with it form the axial clearance adjusting mechanism along spacing between the forward and backward chuck of axial adjustment of mandrel 10, during assembling, by rotation puller bolt 16, hold out against the spacing that rear chuck realizes between forward and backward chuck and adjust, thereby clamp conductive contact finger tubular blank 20.
The groove milling method of conductive contact finger of the present invention is, the first step, the tubular blank 20 of conductive contact finger is fixedly set on the mandrel 10 of groove milling mould and by mandrel 10 two ends, arrange before, rear chuck is arranged on the dividing head of milling machine after clamping, concrete, first mandrel 10 is inserted in the tubular blank 20 of conductive contact finger by 4 places, 20 bottoms of conductive contact finger tubular blank, the cylinder bottom 4 of this conductive contact finger tubular blank 20 is inserted between ring platform 11 and locating ring 13 to be stayed in the annular groove of establishing, then on ring platform 11 and locating ring 13, the screw-in of the through hole on 20 bottoms 4 of corresponding conductive contact finger tubular blank bolt 12 is circumferentially spacing fixing by conductive contact finger tubular blank 20, again carcass 14 and disk body 15 are inserted on the free-ended square shaft section of mandrel 10 10-2 successively, carcass 14 is inserted into coincide to support in the nozzle of conductive contact finger tubular blank 20 nozzle portions 1 and with the inwall of conductive contact finger tubular blank 20 nozzle portions 1 and neck part 2 and coordinates, disk body 15 is coordinated with carcass 14 and is gripped and use the hold out against nut 16 of spinning on mandrel thread section 10-3 to hold out against fixing the nozzle portion of conductive contact finger tubular blank 20 by its outer 15-1 that turns edge, thereby guarantee coaxially assembling between conductive contact finger tubular blank 20 and mandrel 10, finally mandrel 10 is fixedly clamped in the chuck 30 of milling machine dividing head by its clamping part 10-1, and for top 40 on miller tailstock, hold out against location at the free end of mandrel 10, guarantee that mandrel 10 rotates stable.Second step, free end feed along the axis direction of mandrel 10 by mandrel 10, groove on milling conductive contact finger tubular blank 20 barrels, after the complete a groove of every milling, all makes angle a groove under milling successively of a setting of tubular blank 20 rotation of conductive contact finger by dividing head.Wherein, when first part of processing, disk body 15 in the tubular blank 20 of conductive contact finger fixing rear chuck corresponding to mandrel 10 free ends is carried out to Milling Process with carcass together with 14 whiles, thereby evenly offer, be respectively used to radially the milling cutter groove that confession milling cutter 50 passes through in subsequent parts process in the periphery of disk body 15 and carcass 14.According to above-mentioned steps, pack subsequent parts into, the groove of the milling cutter groove milling subsequent parts shaping in the carcass 14 after milling cutter need being aimed at man-hour in adding of subsequent parts in chuck and disk body 15 peripheries.Conductive contact finger tubular blank 20 in the present embodiment needs to mill out uniformly 24 flap elasticity contact finger pieces after Milling Process, thereby dividing head need rotate 15 ° at every turn in concrete Milling Process.
The present invention is not limited to above-described embodiment, in concrete application, front chuck in above-mentioned mould also can adopt only revolve guiding sliding matching mode be assemblied on mandrel, and between front chuck and mandrel, axial block position limiting structure or the nut check on mandrel by corresponding spinning are set, or front chuck directly by screw thread spinning on mandrel; Annular groove on front chuck can directly be opened in thereafter on end face; The disk body of rear chuck and carcass also can adopt integrative-structure setting; Between rear chuck and mandrel, also can directly spin by screw thread, the distortion of above various technical schemes is all within protection scope of the present invention.
Claims (9)
1. the groove milling method of a conductive contact finger, it is characterized in that, the method comprises the following steps: the first step, the tubular blank geometrical clamp of conductive contact finger is contained on groove milling mould and by groove milling mould, is arranged on the dividing head of milling machine, and the internal face at conductive contact finger tubular blank both ends is joined and is incorporated in groove milling mould and away from even circumferential on one end outer surface of dividing head, offers the milling cutter groove passing through for milling cutter with this groove milling mould support respectively; Second step, allow milling cutter aim at after the milling cutter groove on groove milling mould along the groove on the axis direction climb cutting cutter groove milling conductive contact finger tubular blank barrel of groove milling mould, complete one groove of every milling, all by dividing head, make the angle of the tubular blank rotation setting of conductive contact finger, along each milling cutter groove on groove milling mould, complete successively the Milling Process of each groove.
2. the groove milling method of conductive contact finger according to claim 1, is characterized in that, the milling cutter groove on described groove milling mould is, when first part of processing, the tubular blank of conductive contact finger is carried out to Milling Process formation together with groove milling mould.
3. the groove milling method of conductive contact finger according to claim 1, is characterized in that, the set angle of the each rotation of described dividing head is 15 °.
4. a conductive contact finger groove milling mould that is exclusively used in the groove milling method of implementing conductive contact finger as claimed in claim 1, it is characterized in that, comprise that mandrel and relative spacing for being coaxially located in conductive contact finger tubular blank are installed on mandrel for the chuck at conductive contact finger tubular blank two ends by axial clearance regulation mechanisms grip, described chuck comprises for being clamped in the front chuck of conductive contact finger tubular blank cylinder bottom and for being clamped in the rear chuck of conductive contact finger tubular blank nozzle portion, on the rear end face of front chuck and the front end face of rear chuck, offer respectively for the corresponding annular groove inserting in conductive contact finger tubular blank both ends, on the front end face of rear chuck, be also provided with for coincideing and support the carcass coordinating and evenly offer radially around circumference the milling cutter groove passing through for milling cutter on the outer peripheral face of rear chuck and carcass with conductive contact finger tubular blank neck part inner surface.
5. conductive contact finger groove milling mould according to claim 4, it is characterized in that, described front chuck one is fixed on the front portion of mandrel, described rear chuck guiding is snug fit at mandrel rear portion, and described axial clearance regulation mechanism is that the external screw thread and the spinning that are opened in portion of core back-end contact with the rear end face of rear chuck the nut that holds out against coordinating on this mandrel external screw thread.
6. conductive contact finger groove milling mould according to claim 5, it is characterized in that, described front chuck is mainly comprised of the locating ring that is radially fixed on the ring platform on mandrel outer peripheral face and be flush-mounted in ring platform rear end face, and the annular groove on described fore-clamp back-end disk face consists of the gap between locating ring outer peripheral face and ring platform.
7. conductive contact finger groove milling mould according to claim 6, is characterized in that, on described ring platform, by the screwed hole rotation of radially offering, is equipped with for circumferentially locating with the through hole of conductive contact finger tubular blank cylinder bottom the bolt coordinating.
8. according to the conductive contact finger groove milling mould described in claim 4 or 5, it is characterized in that, split setting between described rear chuck and carcass, the annular groove on described rear chuck front end face by the outer peripheral face of carcass and rear chuck outer rim, arrange forward turn edge between stay the gap of establishing to form.
9. conductive contact finger groove milling mould according to claim 8, is characterized in that, between described rear chuck and mandrel, by the corresponding square opening and prism arranging, is only screwed and closes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210340286.9A CN102873387B (en) | 2012-09-14 | 2012-09-14 | Groove milling method for conductive contact finger and groove milling die special for implementing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210340286.9A CN102873387B (en) | 2012-09-14 | 2012-09-14 | Groove milling method for conductive contact finger and groove milling die special for implementing method |
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| CN102873387A CN102873387A (en) | 2013-01-16 |
| CN102873387B true CN102873387B (en) | 2014-10-22 |
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| CN105500082B (en) * | 2015-12-24 | 2019-01-11 | 平高集团有限公司 | It is a kind of for processing the tooling of high-voltage circuitbreaker spout exterior surface |
| CN108972091B (en) * | 2018-07-09 | 2019-08-27 | 杭州娃哈哈精密机械有限公司 | Carry out the method for clamping in turning to bottle blowing mould using fixture |
| CN112643104A (en) * | 2020-12-23 | 2021-04-13 | 大连长丰实业总公司 | Numerical control milling tool and method for cantilever thin-wall structure |
| CN113319345A (en) * | 2021-05-31 | 2021-08-31 | 二重（德阳）重型装备有限公司 | Dovetail groove machining method for large barrel parts |
| CN113828836A (en) * | 2021-09-23 | 2021-12-24 | 重庆铁马工业集团有限公司 | Thin-wall part slender groove milling clamping auxiliary tool |
| CN114055097A (en) * | 2021-12-08 | 2022-02-18 | 湖北三江航天红阳机电有限公司 | Method for machining tubular part with runner groove |
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| PL119731B1 (en) * | 1978-06-12 | 1982-01-30 | Osrodek Badawczo Rozwojowy Prz | Apparatus for machining elements,especially nuts using generating methodgaek,ciklicheskim metodom |
| CN101774040B (en) * | 2010-03-08 | 2012-03-07 | 胡建军 | Indexing slotter |
| CN202894459U (en) * | 2012-09-14 | 2013-04-24 | 河南平高电气股份有限公司 | Milling groove mold of conductive contact finger |
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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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