CN102935580A - Large gear ring subdividing positioning and connecting method - Google Patents
Large gear ring subdividing positioning and connecting method Download PDFInfo
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- CN102935580A CN102935580A CN201210429923XA CN201210429923A CN102935580A CN 102935580 A CN102935580 A CN 102935580A CN 201210429923X A CN201210429923X A CN 201210429923XA CN 201210429923 A CN201210429923 A CN 201210429923A CN 102935580 A CN102935580 A CN 102935580A
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- gear ring
- positioning
- large gear
- subdividing
- subdivision
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Abstract
The invention relates to a large gear ring subdividing positioning and connecting method which is characterized in that a large gear ring is semi-finished and subdivided into halves in linear cutting mode, then the subdividing surface is milled to be a positioning subdividing surface forming a 78-degree angle with the horizontal plane through a numerical control vertical miller, the subdivided gear rings are combined through the positioning subdividing surface by aid of self weight of the large gear ring, and after the subdivided gear rings are clamped, a connecting hole is drilled; and after the gear ring is fastened through a bolt, a positioning pin hole is drilled in matched mode, and positioning and connecting are completed. The large gear ring performs automatic aligning and positioning along the positioning subdividing surface by aid of self weight of the large gear ring. An over-positioning method is used during positioning pin positioning, and positioning stability, processing accuracy and process system rigidity are improved.
Description
Technical field
The present invention relates to a kind of large-sized numerical control equipment by the subdivision form of large gear ring, method is located by connecting, in order to solve the difficulty of diameter 5-10m large gear ring when transporting and install, need to carry out subdivision to large gear ring, the present invention proposes a kind of large gear ring subdivision form and the method that is located by connecting, belong to the advanced equipment manufacturing field.
Background technology
In recent years, the domestic well-known lathe such as the accurate research institute of China Aviation, neat tuple control, Shenyang one lathe manufacturing enterprise, increase input and independent research the numerical control machining center etc. of some large-sized gantry machining centers, large-scale gear hobbing machine, compound multistation, and the accuracy of manufacture and level have reached leading in the world.The turn-milling complex machining center domestic manufacturing capacity that there is no of large-scale precision gear ring used that the 5m produced at present is above, be all from external import, and its production technology is abroad monopolized, and this is the main bottleneck of Chinese high-end large-scale accurate digital control equipment Development., large-scale precision numerical control equipment degree domestic high-end in order to realize, the present invention proposes a kind of large-sized numerical control the subdivision form of large-scale precision gear ring, the manufacture method be located by connecting for equipment, is the key technology of large-scale precision gear ring manufacture.The domestic report had no for large-scale high-precision gear ring subdivision form, the method that is located by connecting, patent both domestic and external and scientific and technical literature only have individually for diameter 5m and disclose by the technology of the aspects such as gear ring crackle control with gear ring deformed Control Technology, the aero-engine of the casting of the processing technology of lower ring gear and equipment, large diameter thin wall structure gear ring machining deformation and prophylactico-therapeutic measures, major diameter gear ring.Although domestic, have enterprise to produce the above large gear ring of diameter 15m, these gear rings are mainly used in the transmission of the equipment such as mine, cement, boats and ships, and they use the precision of large gear ring to the required precision of gear far below numerical control equipment.Patent of the present invention adopts and to split the subdivision structure the large-scale precision gear ring, utilizes the deadweight of gear ring after subdivision to realize location, and carries out reliably and connect, and has not only facilitated transporting, installing of large gear ring, and has guaranteed the accuracy of manufacture of large-scale precision gear ring.
Summary of the invention
The large gear ring the present invention relates to is for the motion of large-sized numerical control turn-milling complex machining center rotary table, and material is high-intensity 40CoNiMo, modulus m=8, tooth number Z=1000, tip diameter d
a=8016mm, root diameter d
f=7980mm, inner diameter d=7460mm, gear ring thickness is h=150mm, pressure angle α=20 °, helixangleβ=12 °.The gear ring accuracy class is 5 grades (seeing the following form), surface roughness Ra<0.8.
Large gear ring 5 class precision repertories
| Tooth profile total deviation | F α | 0.03 |
| The profile geometry deviation | f fα | 0.024 |
| The flank profil dip deviation | f Hα | ±0.019 |
| The helix total deviation | F β | 0.021 |
| The helix shape deviation | F fβ | 0.014 |
| The helix dip deviation | F Hβ | ±0.014 |
| Total cumulative pitch error | F p | 0.115 |
| Individual circular pitch error | f pt | ±0.018 |
| Runout tolerance | F r | 0.091 |
The large gear ring blank that patent of the present invention relates to is the 40CoNiMo forging, its manufacturing process: (1) gear ring blank, after turn-milling complex machining center roughing, then carries out modifier treatment.(2) after the gear ring semifinishing, with the line cutting, bull gear is split to subdivision, then with nC vertical milling machine, the subdivision facing cut is become to become with horizontal plane the location split surface of 78 °.(3) utilize certainly focusing on of large gear ring that gear ring after subdivision is undertaken to combination by location split surface face, after clamping, bore connecting hole.(4), with after bolted, join the brill dowel hole.(5) to the location be connected after large gear ring carry out roughing on the turnning and milling complex centre after, modifier treatment, then semifinishing and fine finishining.(6), after gear hobbing, surface high frequency is quenched, then roll flute.(7) product inspection.
Patent content of the present invention is (2) in above-mentioned processing technology, (3) and (4) content.Workpiece size and weight related in the present invention are huge, the location thinking of its invention is that the bull gear locating surface after separating is processed into to location split surface as shown in Figure 4,5, two parts are being located to split surface while combining, utilizing himself gravity to carry out the automatic capturing location along the location split surface.Adopt localization method while locating with alignment pin, improved position stability, machining accuracy and process system rigidity.
The accompanying drawing explanation
Fig. 1 large gear ring blank schematic diagram
Rear overall diagram is located by connecting after Fig. 2 large gear ring subdivision
Fig. 3 is the partial enlarged drawing of I part in Fig. 2
1-outside circle 2-reference circle 3-alignment pin 4-bolt 5-location split surface 6-alignment pin
In Fig. 4 Fig. 2, (Fig. 4 is identical with design size in Fig. 3 for the partial enlarged drawing of II part.）
The specific embodiment
(1) Fig. 1 is that the large gear ring blank is forging, D outer diameter=8040mm, inner diameter d=7400mm, gear ring thickness h=170mm.
(2) rough turn large gear ring blank on turn-milling complex machining center, rough turn after, guarantee size D outer diameter=8030mm, inner diameter d=7440mm, guarantee thickness h=160mm.
(3) after rough turn, modifier treatment.
(4) with line cutting, bull gear is split and is split into 2 half, after after subdivision, the gear ring location clamps, two of bull gear left and right location split surfaces 5 in, finish-milling Fig. 2 thick with nC vertical milling machine, for location.Fig. 3 and Fig. 4 are respectively two of bull gear left and right location split surface 5, alignment pin 3 and bolt 4 positioning connections, and the oblique angle of wherein locating split surface 5 is 78 °.
(5) gear ring of two subdivisions after finish-milling is utilized it position on focusing on location split surface 5, using outside circle 1 and reference circle 2 simultaneously as positioning datum, then clamp, bore connecting hole.Fig. 4 is the partial enlarged drawing of binding site, adopts front view to express its inner structure in conjunction with the method for left view.Simultaneously, the direction of two the location split surfaces 5 in left and right is contrary, as shown in Figures 3 and 4.Cylindrical positioning pins at Shi Shijiang center that two parts are combined installs, backing plate is placed in to coupling part, get out by upright drill the hole needed successively, 8 bolts 4 of bull gear then are installed successively, adopt the left and right alternative expression to install, reduce error, after installing, tighting a bolt 4 also needs to adopt left and right alternately to tighten.
(6) after fastening with bolt 4, join and bore 6 dowel holes, with alignment pin 6 location, the cooperation that the alignment pin 6 of bull gear the right and left adopts adopts basic hole system H7/g6 to coordinate, and can guarantee so axially and positioning precision radially.
(7) location with is connected after bull gear be shaped as ellipse, it is carried out to roughing, the assurance size: D outer diameter=8020mm, inner diameter d=7450mm, thickness h=154mm.
(8) fine finishining, guarantee the gear ring size: tip diameter d
a=8016mm, inner diameter d=7460mm, thickness h=150mm.
(9) gear hobbing, after flank of tooth high-frequency quenching, roll flute, obtain required bull gear.
Claims (2)
1. a large gear ring subdivision is located and the method be connected, it is characterized in that, after the gear ring semifinishing, with the line cutting, bull gear is split to subdivision, then with nC vertical milling machine, the subdivision facing cut is become to become with horizontal plane the location split surface of 78 °, certainly focusing on of recycling large gear ring undertaken gear ring after subdivision to combination by the location split surface, after clamping, bores connecting hole; With after bolted, join the brill dowel hole, complete location and be connected.
2. method according to claim 1, is characterized in that, described bull gear refers to diameter 5-10m large-sized numerical control equipment large gear ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210429923XA CN102935580A (en) | 2012-10-31 | 2012-10-31 | Large gear ring subdividing positioning and connecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210429923XA CN102935580A (en) | 2012-10-31 | 2012-10-31 | Large gear ring subdividing positioning and connecting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102935580A true CN102935580A (en) | 2013-02-20 |
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ID=47694519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210429923XA Pending CN102935580A (en) | 2012-10-31 | 2012-10-31 | Large gear ring subdividing positioning and connecting method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317311A (en) * | 2013-07-08 | 2013-09-25 | 东方电气集团东方汽轮机有限公司 | Machining method of floating cylinder |
| CN104148755A (en) * | 2014-07-16 | 2014-11-19 | 大连冶金轴承股份有限公司 | Splitting bearing line cutting and machining method |
| CN112658608A (en) * | 2020-12-14 | 2021-04-16 | 北京航星机器制造有限公司 | Thin-wall part machining method and thin-wall part |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19606504A1 (en) * | 1996-02-22 | 1997-08-28 | George Dr Ing Rotaru | Large diameter cog wheel for heavy plant |
| CN201057258Y (en) * | 2007-07-20 | 2008-05-07 | 中材建设有限公司 | Macrotype tooth ring used for rotary machine |
| CN201824098U (en) * | 2010-10-11 | 2011-05-11 | 天津豪钢机械工程有限公司 | Device for overturning large-size component at original position |
| CN102152087A (en) * | 2011-01-30 | 2011-08-17 | 吴敬 | Technique for processing 9,000-millimeter-diameter dissection gear of rotary kiln, and special hobbing machine |
-
2012
- 2012-10-31 CN CN201210429923XA patent/CN102935580A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19606504A1 (en) * | 1996-02-22 | 1997-08-28 | George Dr Ing Rotaru | Large diameter cog wheel for heavy plant |
| CN201057258Y (en) * | 2007-07-20 | 2008-05-07 | 中材建设有限公司 | Macrotype tooth ring used for rotary machine |
| CN201824098U (en) * | 2010-10-11 | 2011-05-11 | 天津豪钢机械工程有限公司 | Device for overturning large-size component at original position |
| CN102152087A (en) * | 2011-01-30 | 2011-08-17 | 吴敬 | Technique for processing 9,000-millimeter-diameter dissection gear of rotary kiln, and special hobbing machine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317311A (en) * | 2013-07-08 | 2013-09-25 | 东方电气集团东方汽轮机有限公司 | Machining method of floating cylinder |
| CN103317311B (en) * | 2013-07-08 | 2015-06-24 | 东方电气集团东方汽轮机有限公司 | Machining method of floating cylinder |
| CN104148755A (en) * | 2014-07-16 | 2014-11-19 | 大连冶金轴承股份有限公司 | Splitting bearing line cutting and machining method |
| CN112658608A (en) * | 2020-12-14 | 2021-04-16 | 北京航星机器制造有限公司 | Thin-wall part machining method and thin-wall part |
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Application publication date: 20130220 |