CN103418997B - A kind of processing method of suspension bridge pin joint rope clip - Google Patents
A kind of processing method of suspension bridge pin joint rope clip Download PDFInfo
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- CN103418997B CN103418997B CN201310336214.1A CN201310336214A CN103418997B CN 103418997 B CN103418997 B CN 103418997B CN 201310336214 A CN201310336214 A CN 201310336214A CN 103418997 B CN103418997 B CN 103418997B
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- 239000000725 suspension Substances 0.000 title claims abstract description 16
- 238000003672 processing method Methods 0.000 title claims abstract description 13
- 238000003801 milling Methods 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000005553 drilling Methods 0.000 claims abstract description 10
- 230000007306 turnover Effects 0.000 claims description 3
- 238000003754 machining Methods 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 3
- 241000579971 Terebridae Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention discloses a kind of processing method of suspension bridge pin joint rope clip.The method adopts plain-milling machine to substitute the intrados of deep hole drilling machine and lathe roughing two halves cord clip, adopt the screw hole of positioning tool separate machined two halves cord clip, adopt common boring and milling machine clamped one time, first fine finishining is by the endoporus of the sealed one-tenth of two halves cord clip intrados, then by work table rotation 90 °, take endoporus as benchmark pin hole processing.The inventive method technique is simple, and working (machining) efficiency is high, and processing cost is low, both better can ensure the perpendicularity of screw hole, can also significantly improve the positional precision of pin-and-hole.
Description
Technical field
The present invention relates to a kind of processing method of component of machine, relate in particular to a kind of processing method of suspension bridge pin joint rope clip.
Background technology
Cord clip is a kind of hardware be located on main rope of suspension bridge, and clamping main push-towing rope also connects hoist cable, and whole suspension bridge and load-carrying thereof are passed to main push-towing rope by cord clip, and therefore, cord clip is the important stressed member of suspension bridge.Be space curve because main rope of suspension bridge is linear, not identical with horizontal plane angle everywhere at main push-towing rope, bending stress is born for avoiding the hoist cable be connected with cord clip, pin joint rope clip endoporus and pin-and-hole need different angles and main cable alignment adapts, and the position accuracy demand therefore connecting the pin-and-hole of hoist cable is higher.The pin joint rope clip of suspension bridge forms by high-strength bolt is sealed primarily of upper and lower two halves cord clip, existing processing method be adopt milling machine processing two halves cord clip in conjunction with plane, again two halves cord clip point postwelding is adopted drilling machine overall processing bolt hole, then screw rod is penetrated sealed, adopt deep hole drilling machine or lathe process endoporus, adopt digital display boring and milling machine pin hole processing.The method has the following disadvantages: 1. owing to adopting deep hole drilling machine or lathe process endoporus, cord clip blank is steel-casting, and cast(ing) surface is coarse, and endoporus allowance is general comparatively large, and hardness is large, and containing hard spots such as burnings into sand in interior tissue, process length consuming time, working (machining) efficiency is low; 2. by sealed for two halves cord clip rear overall processing screw hole, because hole depth is comparatively large, hole perpendicularity is difficult to ensure, machining accuracy is poor, and working (machining) efficiency is low; 3. due at deep hole drilling machine or lathe fine finishining endoporus, then be benchmark pin hole processing with endoporus on boring and milling machine, there is secondary clamping problem, pin hole processing positional precision is poor.
CN101559563B provides " a kind of processing technology of cord clip ", this technique comprise line, two halves cord clip respectively milling lower planes, boring and connect together, Li Cheche or boring machine boring two ends male half coupling d, spot welding two ends endoporus car reach drawing and technological requirement to the technique backing ring of D, sleeping carriage frame bracket car endoporus.This technique has and takies large-scale finish machining equipment small investment, working (machining) efficiency is high, the advantage that processing cost is low, but exist following not enough: 1. cord clip spray endoporus surplus is general larger, adopt sleeping carriage processing endoporus time processing shaping, forming residual stress is large, and after processing, endoporus easily produces moderate finite deformation, and inner hole precision is difficult to ensure; 2. adopt common driller auger shell rod aperture by scribing position, hole location and perpendicularity poor, affect two halves cord clip screw rod sealed; 3. adopt this processes pin joint rope clip, endoporus and pin-and-hole fine finishining adopt distinct device, there is secondary clamping, and pin-and-hole positional precision is poor.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of intrados adopting plain-milling machine to substitute deep hole drilling machine and lathe roughing cord clip is provided, adopt the screw hole of common driller and positioning tool separate machined cord clip, adopt the endoporus of common boring and milling machine clamped one time fine finishining cord clip and be benchmark pin hole processing with endoporus, on the basis ensureing screw hole perpendicularity and pin-and-hole positional precision, a kind of processing method of suspension bridge pin joint rope clip improve working (machining) efficiency, cutting down finished cost.
The object of the present invention is achieved like this: a kind of processing method of suspension bridge pin joint rope clip, comprise line, screw rod boss face, faying face and the processing of screw rod deep gouge, screw hole processing, intrados and pin-and-hole processing, it is characterized in that: described screw hole processing adopts drilling machine and positioning tool separately to carry out, described intrados and pin-and-hole processing first adopt milling machine to carry out roughing to intrados, again by sealed for two halves cord clip, adopting the endoporus of boring and milling machine to the sealed one-tenth of two halves cord clip intrados to carry out fine finishining, is then benchmark pin hole processing with endoporus.
Described screw rod boss face, faying face, the processing of screw rod deep gouge and the roughing of intrados place equal height cushion block on plain-milling machine workbench, the faying face of two halves cord clip is evenly placed on equal height cushion block down, centering, clamping, adopt milling cutter milling screw rod boss face to put in place, then by two halves cord clip turn-over, screw rod boss face is placed on equal height cushion block down, centering, clamping, milling faying face and screw rod deep gouge, to size, then carry out roughing to the intrados of two halves cord clip, stay allowance for finish.
Described screw hole processing places equal height cushion block on common driller workbench, faying face, screw rod boss face, screw rod deep gouge are processed the faying face of the two halves cord clip put in place upward, evenly be placed on equal height cushion block, positioning tool is placed in screw rod deep gouge again, processes screw hole respectively by the location of positioning tool.
Described positioning tool is made up of screw rod and locating piece, and locating piece is screwed in the two ends of screw rod, and the middle part of locating piece is provided with pilot hole.
Described intrados and pin-and-hole processing are that two halves cord clip roughing put in place is sealed, be placed on the equal height cushion block of common boring and milling machine workbench, centering, clamping, adopt facing head to carry out fine finishining with addition of the endoporus of long boring bar to the sealed one-tenth of two halves cord clip intrados to put in place, again by work table rotation 90 °, be that benchmark adopts Common boring cutter pin hole processing with endoporus.
Compared with prior art, beneficial effect of the present invention is:
1, owing to adopting milling machine to carry out roughing to the intrados of two halves cord clip, working (machining) efficiency is high, reduces processing cost.
2, adopt positioning tool to separate auger shell rod aperture, because hole depth reduces, hole perpendicularity is guaranteed, and screw hole positional precision is high, and be convenient to two halves cord clip sealed, improve machining accuracy, working (machining) efficiency is high.
3, owing to adopting boring and milling machine to carry out fine finishining to the endoporus by the sealed one-tenth of two halves cord clip intrados, the inner hole precision after processing is high, then is benchmark pin hole processing with endoporus, and clamped one time, processing cost is low, and pin-and-hole positional precision is high.
Accompanying drawing explanation
Fig. 1 is intrados roughing schematic diagram of the present invention.
Fig. 2 is screw hole machining sketch chart of the present invention.
Fig. 3 is that the A of Fig. 2 is to structural representation.
Fig. 4 is finishing of internal diameter schematic diagram of the present invention.
Fig. 5 lengthens boring bar schematic diagram in Fig. 4.
Fig. 6 is the right view of Fig. 5.
Fig. 7 is pin-and-hole machining sketch chart of the present invention.
In figure: second cord clip 1, faying face 1a, screw boss face 1b, screw deep gouge 1c, screw hole 1d, intrados 1e, pin-and-hole 1f, first cord clip 2, faying face 2a, screw boss face 2b, screw deep gouge 2c, screw hole 2d, intrados 2e, endoporus 3, equal height cushion block 4, positioning tool 5, screw rod 5a, locating piece 5b, pilot hole 5c, milling machine 6, milling machine table 6a, milling cutter 6b, drilling machine 7, Drilling machines bench 7a, drill bit 7b, boring and milling machine 8, boring and milling machine workbench 8a, lengthen boring bar 8b, Common boring cutter 8c.
Detailed description of the invention
Illustrate that the present invention will be further described with detailed description of the invention below in conjunction with accompanying drawing.
A kind of processing method of suspension bridge pin joint rope clip, comprise line, faying face 1a and 2a, screw rod boss face 1b and 2b, screw rod deep gouge 1c and 2c, the processing of screw hole 1d and 2d and the roughing of intrados 1e and 2e successively, the operations such as the fine finishining of endoporus 3 and the processing of pin-and-hole 1f.
Line comprises processing line and both ends of the surface processing line, the processing line of screw rod boss face 1b and 2b, the processing line of screw rod deep gouge 1c and 2c, the center line of screw hole 1d and 2d, the processing circle line of intrados 1e and 2e, the center line of pin-and-hole 1f of faying face 1a and 2a of two halves cord clip 1 and 2.
First by faying face 1a and 2a of two halves cord clip 1 and 2 down, processing circle line, the processing line of faying face 1a and 2a, the processing line of screw rod boss face 1b and 2b of intrados 1e and 2e is drawn; Again two halves cord clip 1 and 2 is sidelong, draws the longitudinal centre line of intrados 1e and 2e and extend to whole half cord clip, draw the longitudinal centre line of screw hole 1d and 2d, the longitudinal centre line of pin-and-hole 1f; Then two halves cord clip 1 and 2 is vertically put, draw cross central line, both ends of the surface processing line, the cross central line of screw hole 1d and 2d, the cross central line of pin-and-hole 1f of intrados 1e and 2e.
See Fig. 1: faying face 1a and 2a, screw rod boss face 1b and 2b, the processing of screw rod deep gouge 1c and 2c and the roughing of intrados 1e and 2e, place equal height cushion block 4 on plain-milling machine workbench 6a, respectively faying face 1a and 2a of two halves cord clip 1 and 2 is evenly placed on equal height cushion block 4 down, centering, clamping, adopt plain cutter 6b milling screw rod boss face 1b and 2b to put in place; Again by two halves cord clip 1 and 2 turn-over, by the screw rod boss face 1b that processes and 2b down, centering, clamping, milling faying face 1a and 2a and screw rod deep gouge 1c and 2c is to size, again with the round line of intrados 1e and 2e for benchmark milling intrados 1e and 2e, monolaterally stay 5mm allowance for finish.
See Fig. 2 ~ 3: the processing of screw hole 1d and 2d, place equal height cushion block 4 on common driller workbench 7a, faying face 1a and 2a, screw rod boss face 1b and 2b, screw rod deep gouge 1c and 2c are processed faying face 1a and 2a of the two halves cord clip 1 and 2 put in place upward, evenly be placed on equal height cushion block 4, positioning tool 5 is placed in screw rod deep gouge 1c and 2c processed again, bores screw hole 1d and 2d of two halves cord clip 1 and 2 by the location of positioning tool 5 respectively.Positioning tool 5 is made up of screw rod 5a, locating piece 5b, and locating piece 5b is screwed in the two ends of screw rod 5a, and middle part is provided with pilot hole 5c.During use, the locating piece 5b at positioning tool 5 two ends is separately positioned in screw deep gouge 1c and 2c, the outer wall of locating piece 5b and the inwall of screw deep gouge 1c and 2c tangent, after holding out against location by adjusting screw(rod) degree of tightness, bore screw hole 1d and 2d of two halves cord clip 1 and 2 respectively by the pilot hole 5c of positioning tool 5.
See Fig. 4 ~ 7: the fine finishining of intrados 1e and 2e and the processing of pin-and-hole 1f, place equal height cushion block 4 on common boring and milling machine workbench 8a, the two halves cord clip 1 and 2 roughing put in place adopts frock screw rod sealed, and in the soldered fishplate bar fixed placement of side point on equal height cushion block 4, with two halves cord clip intrados 1e with 2e sealed become the round line of endoporus 3, longitudinal centre line is N Reference Alignment, facing head is used to put in place with addition of long boring bar 8b right boring endoporus 3, again boring and milling machine workbench 8a is turned round 90 °, with the length of endoporus 3 and height center for benchmark, boring and milling machine main shaft clamping Common boring cutter 8c pin hole processing 1f is adopted to put in place.The one end lengthening boring bar 8b is connected on facing head, and the other end connects cutter, and its length is determined according to the processing length of endoporus 3, is generally about 700mm.
Claims (4)
1. the processing method of a suspension bridge pin joint rope clip, comprise line, screw rod boss face, faying face and the processing of screw rod deep gouge, screw hole is processed, intrados and pin-and-hole processing, it is characterized in that: described screw hole processing adopts drilling machine and positioning tool separately to carry out, described intrados and pin-and-hole processing first adopt milling machine to carry out roughing to intrados, two halves cord clip roughing put in place is again sealed, be placed on common boring and milling machine workbench, centering, clamping, facing head is adopted to carry out fine finishining with addition of the endoporus of long boring bar to the sealed one-tenth of two halves cord clip intrados, then by work table rotation 90 °, be that benchmark adopts Common boring cutter pin hole processing with endoporus.
2. the processing method of a kind of suspension bridge pin joint rope clip according to claim 1, it is characterized in that described screw rod boss face, faying face, the processing of screw rod deep gouge and the roughing of intrados place contour cushion block on plain-milling machine workbench, the faying face of two halves cord clip is evenly placed on cushion block down, centering, clamping, milling cutter milling screw rod boss face is adopted to put in place, again by two halves cord clip turn-over, screw rod boss face is placed on cushion block down, centering, clamping, milling faying face and screw rod deep gouge are to size, then roughing is carried out to the intrados of two halves cord clip, stay allowance for finish.
3. the processing method of a kind of suspension bridge pin joint rope clip according to claim 1, it is characterized in that described screw hole processing places equal height cushion block on common driller workbench, faying face, screw rod boss face, screw rod deep gouge are processed the faying face of the two halves cord clip put in place upward, evenly be placed on equal height cushion block, positioning tool is placed in screw rod deep gouge again, processes screw hole respectively by the location of positioning tool.
4. the processing method of a kind of suspension bridge pin joint rope clip according to claim 3, it is characterized in that described positioning tool is made up of screw rod and locating piece, locating piece is screwed in the two ends of screw rod, and the middle part of locating piece is provided with pilot hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310336214.1A CN103418997B (en) | 2013-08-05 | 2013-08-05 | A kind of processing method of suspension bridge pin joint rope clip |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310336214.1A CN103418997B (en) | 2013-08-05 | 2013-08-05 | A kind of processing method of suspension bridge pin joint rope clip |
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| CN103418997A CN103418997A (en) | 2013-12-04 |
| CN103418997B true CN103418997B (en) | 2015-11-25 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753263A (en) * | 2013-12-20 | 2014-04-30 | 柳州金茂机械有限公司 | Boring technique and boring fixture for clamp body of bridge rope |
| CN105537993B (en) * | 2015-12-31 | 2017-10-31 | 广西玉林市朗泰汽车零部件有限公司 | Secondary positioning drill jig for body reinforcing plate |
| CN107685235B (en) * | 2017-09-30 | 2024-02-06 | 中国水电四局（祥云）机械能源装备有限公司 | Horizontal processing method and special tool for radial gate leaves |
| CN107900779A (en) * | 2017-11-07 | 2018-04-13 | 中国铁建重工集团有限公司 | A kind of shield shield body processing and loading clamp alignment device and aligning method |
| CN111215852B (en) * | 2020-01-22 | 2021-08-17 | 武汉船用机械有限责任公司 | Machining method for cylinder body of double-piston oil cylinder |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11323824A (en) * | 1998-05-08 | 1999-11-26 | Shinko Kosen Kogyo Kk | Cable joint metal fixture of suspension structure |
| CN1831246A (en) * | 2005-03-11 | 2006-09-13 | 柳州欧维姆机械股份有限公司 | Cord clip with filling block and method for clamping main cable of suspension bridge by it |
| CN200961239Y (en) * | 2006-09-09 | 2007-10-17 | 柳州欧维姆机械股份有限公司 | Rotary cable-stayed bridge cable clamp |
| CN101559553A (en) * | 2009-05-11 | 2009-10-21 | 鄂州市栋鑫冶金机械设备有限公司 | Process for machining rope clip |
| CN102051857A (en) * | 2009-10-30 | 2011-05-11 | 上海浦江缆索股份有限公司 | Method for manufacturing waterproof cable holder |
| CN102767139A (en) * | 2012-08-09 | 2012-11-07 | 中铁第四勘察设计院集团有限公司 | Combined clip of double main cables of suspension bridge |
| CN202969271U (en) * | 2012-11-23 | 2013-06-05 | 四川天元机械工程股份有限公司 | Pin-connected rope clip |
| CN203021920U (en) * | 2012-10-23 | 2013-06-26 | 武汉二航路桥特种工程有限责任公司 | Cable clip special for hanging stay cables |
-
2013
- 2013-08-05 CN CN201310336214.1A patent/CN103418997B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11323824A (en) * | 1998-05-08 | 1999-11-26 | Shinko Kosen Kogyo Kk | Cable joint metal fixture of suspension structure |
| CN1831246A (en) * | 2005-03-11 | 2006-09-13 | 柳州欧维姆机械股份有限公司 | Cord clip with filling block and method for clamping main cable of suspension bridge by it |
| CN200961239Y (en) * | 2006-09-09 | 2007-10-17 | 柳州欧维姆机械股份有限公司 | Rotary cable-stayed bridge cable clamp |
| CN101559553A (en) * | 2009-05-11 | 2009-10-21 | 鄂州市栋鑫冶金机械设备有限公司 | Process for machining rope clip |
| CN102051857A (en) * | 2009-10-30 | 2011-05-11 | 上海浦江缆索股份有限公司 | Method for manufacturing waterproof cable holder |
| CN102767139A (en) * | 2012-08-09 | 2012-11-07 | 中铁第四勘察设计院集团有限公司 | Combined clip of double main cables of suspension bridge |
| CN203021920U (en) * | 2012-10-23 | 2013-06-26 | 武汉二航路桥特种工程有限责任公司 | Cable clip special for hanging stay cables |
| CN202969271U (en) * | 2012-11-23 | 2013-06-05 | 四川天元机械工程股份有限公司 | Pin-connected rope clip |
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Address after: No.88, Binhe North Road, hi tech Zone, Luoyang City, Henan Province Patentee after: CSSC Shuangrui (Luoyang) special equipment Co.,Ltd. Address before: No.88, Binhe North Road, hi tech Zone, Luoyang City, Henan Province Patentee before: LUOYANG SUNRUI SPECIAL EQUIPMENT Co.,Ltd. |