CN1202927C - Wedge transverse rolling machine for precison-forming axle blank of train wheel - Google Patents
Wedge transverse rolling machine for precison-forming axle blank of train wheel Download PDFInfo
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- CN1202927C CN1202927C CN 03146134 CN03146134A CN1202927C CN 1202927 C CN1202927 C CN 1202927C CN 03146134 CN03146134 CN 03146134 CN 03146134 A CN03146134 A CN 03146134A CN 1202927 C CN1202927 C CN 1202927C
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Abstract
The present invention provides a wedge cross-rolling machine for precisely forming railroad car axle blanks, which is composed of a working stand 1, a transmission system 2 and a transmission shaft 3. The two-roll detachable multiple-wedge cross-rolling machine for precisely forming railroad car axle blanks, which is designed by the present inventions has the technical parameters of 2600 to 3500KN of rolling force, 500 to 650KN. m of rolling torque, 2 to 5 rpm of rotating speed of a roller, 350 to 400KW of the power of a main motor, phi 1500 to 1700mm of the large outside diameter of a mould, 2200 to 2300mm of roll body length, phi 180 to 230mm of diameters of rolled pieces, 300-500mm of the upper and the lower adjusted doses of an upper roll, (+/-) 15mm of axial adjusted dose of a lower roll, (+/-) 3 DEG of phase adjusting angles of the lower roll, 6 to 10KW of the power of a downward motor, and 0.15 to 0.2 mm/s of a downward speed. The present invention has the advantages of high rigidity of the rolling mill, high product precision, high productivity, high utilization rate of raw material, procedure reduction and low cost; closed type gear transmission is used, and the meshing condition and the lubricated condition of gears are good.
Description
Technical field
The invention belongs to axial workpiece plastic forming equipment technical field, a kind of cross wedge rolling machine of precision form railroad car axle blank particularly is provided, be applicable to that rolling diameter of phi 180mm is above, length surpasses 2 meters ultra-large type axial workpiece.
Background technology
Railroad car axle is one of three big vital parts (heavy rail, axletree and wheel) of railway construction, belongs to the ultra-large type axial workpiece.The main equipment types of producing the railroad car axle blank at present both at home and abroad has three kinds: the 1) forcing press of flat-die forging shaping, and its production efficiency is 0.2～0.3 of per minute; 2) precise forging machine of forging and molding, its production efficiency are 0.3～0.5 of per minute; 3) three roller profiling milling trains of roll forming, its production efficiency is 0.3～0.6 of per minute.
About adopting the rolling axial workpiece of cross wedge rolling technique, at present in the world the maximum wedge cross rolling mill of development can only rolling diameter below φ 150mm, the axial workpiece of length below 1200mm, its mould maximum gauge is φ 1400mm.More than φ 180mm, length is such ultra-large type axial workpiece about 2300mm for the railroad car axle diameter, and present existing equipment can't be produced.Therefore, adopt many wedges precision rolling shaping railroad car axle technology, develop super-huge cross wedge rolling machine device fabrication railroad car axle blank, in the world still for first.
Summary of the invention
The objective of the invention is to: a kind of new and effective rolling railroad car axle equipment---the split type super-huge cross wedge rolling machine of two rollers (Fig. 1, Fig. 2) is provided, many wedges mould is installed on the top and bottom rolls of cross wedge rolling machine roller system, drive roll by transmission system and rotate in the same way, roll out the railroad car axle blank.
The present invention is satisfying on many wedges precision rolling shaping railroad car axle technological requirement basis, according to the steel rolling thinking of " forging " raising product precision and production efficiency, design the super-huge cross wedge rolling machine (Fig. 1, Fig. 2) of the split type many wedges precision form of two rollers railroad car axle blank to roll generation.This milling train is made up of working stand I, transmission system II and power transmission shaft III three parts, and important technological parameters is:
1) maximum rolling force 2600～3500KN;
2) maximum rolling force square 500～650KNm;
3) roll rotational speed: 2～5rpm;
4) main motor current 350～400KW;
5) mould maximum outside diameter: φ 1500～1700mm;
6) barrel length: 2200～2300mm;
7) workpiece diameter: φ 180～230mm;
8) adjustment amount: 300～500mm about the topping roll;
9) the axial adjustment amount of bottom roll: ± 15mm;
10) the bottom roll phase place is adjusted angle: ± 3 °;
11) depress power of motor: 6～10KW;
12) depress speed: 0.15～0.2mm/s.
Working stand I adopts prestressed mill stand, comprises that mainly rack 1 (Fig. 3), roller are 2 (Fig. 5), screwdown gear 3 (Fig. 4) and guide agency 4.Rack mainly is assembled together fore side memorial archway 12 and transmission side memorial archway 13 by entablature 11 and sill 14, and puts together on the base 15 by screw.Memorial archway is a closed type structure, can improve mill stiffness.Screwdown gear 3 is fixed on gantry operation side memorial archway 12, transmission side memorial archway 13 and the entablature 11, drive by depressing motor 16, driving housing screw 19 by worm gear-endless screw rotates, housing screw and screw box 18 engagements, is that top chock 23 links in 2 by semi-ring 20, gland 21 and protruding ball ring 22 with roller, screw box 18 is fixed in the framework memorial archway motionless, thereby realizes depressing and lifting of topping roll, and its drafts is 300～500mm.When the electromagnetic clutch in the screwdown gear 17 closes, can guarantee synchronously equidistant parallel the moving of roll; When rolled piece radial dimension on one side puts in place, and the radial dimension of another side disconnects electromagnetic clutch 17 when not putting in place, and screw-down can be adjusted separately by breaker roll.Roller is 2 to be installed in the framework memorial archway window, mainly form by top chock 23, prestressing mechanism 24, step 25, roll 26, roller shell 27, mould 28, axial regulating mechanism (Fig. 6), roll and roller shell are designed to combined type, can reduce framework window and satisfy the size that the roll requirement is installed.Mould 28 is installed on the roller shell 27, and roller shell 27 puts together on the roll 26, rotates in the same way by transmission system II and power transmission shaft III drive roll and realizes the rolling of railroad car axle; Prestressing mechanism 24 is installed in the roller system between the top and bottom rolls bearing block, applies prestressing force by cylinder device between the top and bottom rolls bearing block, makes the milling train global stiffness improve about 1.9 times than the milling train that does not have this device; Axial regulating mechanism (Fig. 6) is installed on step 25 and the fore side framework memorial archway 12, and copper nut 30 places step 25 lug places, and by the axial adjustment that rotating screw 29, adjusting nut 31 are realized bottom roll, its regulated quantity is ± 10mm.Guide agency 4 is installed on the framework memorial archway, about can carrying out guide plate, front and back regulate, and have so just guaranteed the rolling mill practice stability of rolling different size rolled piece.
Transmission system II is made up of herringbone gear 7 (Fig. 7), standard reductor 10, main motor 9.Main motor 9 rotates by herringbone bear power shaft in the standard reductor 10 driven gear supports 7 33, and the big herringbone bear that is meshed with the power shaft herringbone bear is housed on the output shaft 32, realizes the rotation in the same way of two output shafts.
Power transmission shaft III is made up of last power transmission shaft 6, lower drive shaft 5 and roll phase angle guiding mechanism 8 (Fig. 8).Last power transmission shaft 6 and lower drive shaft 5 connects top and bottom rolls and herringbone gear output shafts, and the power and the motion of two output shafts of herringbone gear passed to two rolls in the working stand.On lower drive shaft 5 and the herringbone gear output shaft 32 joining half a couplers phase angle guiding mechanism 8 is installed, adjust bolt 34 by rotating, half a coupler 36 rotates relative to catcher 37 to make adjusting key 35 drive down, bottom roll connects with catcher 37, realize the adjustment of roll phase place, thereby the type groove that guarantees two roll molds aligns at circumferencial direction, and the adjusting range at its phase angle is ± 3 °.
The present invention produces railroad car axle equipment relatively with existing, and advantage is as follows:
1) milling train adopts split-type structural, and promptly working stand and transmission system are arranged apart, connect with universal-joint spindle between the two.The major advantage of this version is: (1) adopts the enclosed gear drive, and gear meshing condition and lubricating condition are good, and the life-span is long, and noise is less than 60 decibels, cleaner production; (2) prestressed device between the metal (upper seat improves about 1.9 times of mill stiffness; (3) working stand separates with gear train assembly, installation, adjustment and easy to maintenance; (4) roll bearing adopts rolling bearing, significantly cuts down the consumption of energy; (5) radially adjustment amount is greatly and can not influence the variation of roll phase place for roll.(6) the phase angle guiding mechanism is set, guarantees that the type groove of two roll molds aligns at circumferencial direction; 4) electric screw down gear, press down system adopts the electric screw down gear of worm gear-endless screw transmission mechanism, and electromagnetic clutch is housed, and both can realize that the diaxon bearing of topping roll is depressed simultaneously, can realize again depressing separately, thereby can realize the bell-mouthed adjustment of roll.
2) single productivity height.Higher more than 8 times with open die forging than (railroad car axle of China 80% adopts this method to produce at present); With Austrian precise forging machine (state-of-the-art in the world method) than high more than 4 times; With three roller profilings rolling (Russia) than high more than 3 times;
3) rolled piece stock utilization height.With open die forging than mean height 20%; With precise forging machine than mean height 10%; Rolling with profiling than mean height 15%, every joint material 60～150kg.
4) machining processes reduces.Because the railroad car axle blank size precision that existing three kinds of explained hereafter go out is not as cross wedge rolling, add that right angle step is not so good as cross wedge rolling be shaped easily (chamfered transition is all arranged), the former capital will be through fine finishining again after the roughing, and cross wedge rolling can directly carry out fine finishining, energy-conservation operation.
5) production cost is low.Cross wedge rolling has efficient height, material-saving, province's manufacturing procedure etc. compared with the prior art, and its production cost can descend 15～30%.
Description of drawings
Fig. 1 is the super-huge cross wedge rolling machine front view of a kind of many wedges precision form of the present invention railroad car axle blank, wherein, rack 1, roller is 2, screwdown gear 3, lower drive shaft 5, last power transmission shaft 6, herringbone gear 7, phase angle guiding mechanism 8, standard reductor 10.
Fig. 2 is the super-huge cross wedge rolling machine vertical view of many wedges of the present invention precision form railroad car axle blank, wherein, and guide agency 4, main motor 9.
Fig. 3 is rack figure of the present invention, wherein, and entablature 11, fore side memorial archway 12, transmission side memorial archway 13, sill 14, base 15.
Fig. 4 is a screwdown gear installation diagram of the present invention, wherein, depresses motor 16, electromagnetic clutch 17, screw box 18, housing screw 19.
Fig. 5 is an installation diagram for roller of the present invention, wherein, and semi-ring 20, gland 21, protruding ball ring 22, top chock 23, prestressing mechanism 24, step 25, roll 26, roller shell 27, mould 28.
Fig. 6 is an axial regulating mechanism cutaway view of the present invention, wherein, and fore side memorial archway 12, step 25, adjustment screw 29, copper nut 30, adjusting nut 31.
Fig. 7 is a herringbone gear installation diagram of the present invention, wherein, and output shaft 32, power shaft 33.
Fig. 8 is a phase angle of the present invention guiding mechanism cutaway view, wherein, regulates bolt 34, adjusting key 35, following half a coupler 36, catcher 37.
Claims (1)
1, a kind of super-huge cross wedge rolling machine of precision form railroad car axle blank is made up of working stand (I), transmission system (II) and power transmission shaft (III) three parts, it is characterized in that:
A, working stand (I) adopt prestressed mill stand, comprise rack (1), roller system (2), screwdown gear (3) and guide agency (4); Rack is assembled together fore side memorial archway (12) and transmission side memorial archway (13) by entablature (11) and sill (14), and puts together on the base (15) by screw, and memorial archway is a closed type structure; Screwdown gear (3) is fixed on gantry operation side memorial archway (12), transmission side memorial archway (13) and the entablature (11), drive by depressing motor (16), driving housing screw (19) by worm Gear-Worm rotates, housing screw and screw box (18) engagement, by semi-ring (20), gland (21) and protruding ball ring (22) and roller is that top chock (23) links in (2), screw box (18) is fixed in the framework memorial archway motionless, thereby realizes depressing and lifting of topping roll; When the electromagnetic clutch in the screwdown gear (17) when closing, can guarantee synchronously equidistant parallel the moving of roll; When rolled piece radial dimension on one side puts in place, and the radial dimension of another side disconnects electromagnetic clutch (17) when not putting in place, and the screw-down breaker roll is adjusted separately; Roller system (2) is installed in the framework memorial archway window, form by top chock (23), prestressing mechanism (24), step (25), roll (26), roller shell (27), mould (28), axial regulating mechanism, roll and roller shell are designed to combined type, mould (28) is installed on the roller shell (27), roller shell (27) puts together on the roll (26), rotates in the same way by transmission system (II) and power transmission shaft (III) drive roll and realizes the rolling of railroad car axle; Prestressing mechanism (24) is installed in the roller system between the top and bottom rolls bearing block, axial regulating mechanism is installed on step (25) and the fore side framework memorial archway (12), copper nut (30) places step (25) lug place, realizes the axial adjustment to bottom roll by rotation adjustment screw (29), adjusting nut (31); Guide agency (4) is installed on the framework memorial archway, about can carrying out guide plate, front and back regulate, and have so just guaranteed the rolling mill practice stability of rolling different size rolled piece;
B, transmission system (II) are made up of herringbone gear (7), standard reductor (10), main motor (9); Main motor (9) rotates by herringbone bear power shaft (33) in standard reductor (10) the driven gear support (7), and the big herringbone bear that is meshed with the power shaft herringbone bear is housed on the output shaft (32), realizes the rotation in the same way of two output shafts;
C, power transmission shaft (III) are made up of last power transmission shaft (6), lower drive shaft (5) and roll phase angle guiding mechanism (8); Last power transmission shaft (6) and lower drive shaft (5) connect top and bottom rolls and herringbone gear output shaft, and the power and the motion of two output shafts of herringbone gear passed to two rolls in the working stand; On lower drive shaft (5) and the joining half a coupler of herringbone gear output shaft (32) phase angle guiding mechanism (8) is installed, adjust bolt (34) by rotating, half a coupler (36) rotates relative to catcher (37) to make adjusting key (35) drive down, bottom roll connects with catcher (37), realize the adjustment of roll phase place, thereby the type groove that guarantees two roll molds aligns at circumferencial direction;
The super-huge cross wedge rolling machine of d, the split type many wedges precision form of two rollers railroad car axle blank, technical parameter is: roll-force 2600～3500KN; Roll torque 500～650KNm; Roll rotational speed: 2～5rpm; Main motor current 350～400KW; The big external diameter of mould: φ 1500～1700mm; Barrel length: 2200～2300mm; Workpiece diameter: φ 180～230mm; Topping roll is adjustment amount: 300～500mm up and down; The axial adjustment amount of bottom roll: ± 15mm; The bottom roll phase place is adjusted angle: ± 3 °; Depress power of motor: 6～10KW; Depress speed: 0.15～0.2mm/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03146134 CN1202927C (en) | 2003-07-24 | 2003-07-24 | Wedge transverse rolling machine for precison-forming axle blank of train wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03146134 CN1202927C (en) | 2003-07-24 | 2003-07-24 | Wedge transverse rolling machine for precison-forming axle blank of train wheel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1476946A CN1476946A (en) | 2004-02-25 |
| CN1202927C true CN1202927C (en) | 2005-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03146134 Expired - Fee Related CN1202927C (en) | 2003-07-24 | 2003-07-24 | Wedge transverse rolling machine for precison-forming axle blank of train wheel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014139320A1 (en) * | 2013-03-12 | 2014-09-18 | Zhang Hengchang | Roll sleeve type steel plate planetary rolling mill |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1304131C (en) * | 2005-04-19 | 2007-03-14 | 北京科技大学 | Frequency conversion motor driven axial automatic feed system of wedge cross-rolling mill |
| CN100389901C (en) * | 2006-11-27 | 2008-05-28 | 北京科技大学 | Wedge cross-rolling two cycle roll-forming method for train shaft blank |
| CN101758082B (en) * | 2009-12-28 | 2011-09-07 | 莱芜钢铁股份有限公司 | Phase regulator with linear regulating function |
| CN102601122B (en) * | 2012-03-13 | 2014-10-15 | 西安交通大学 | Alternating-current direct-drive servo device for main transmission and two-roller radial spacing adjustment |
| CN104624901B (en) * | 2015-01-27 | 2016-09-14 | 浙江龙力机械有限公司 | Forging roll |
| CN107138659B (en) * | 2017-04-28 | 2019-03-22 | 燕山大学 | It is a kind of for shaping the cross wedge rolling machine of small shaft forgings |
| CN109940099B (en) * | 2019-04-01 | 2024-01-12 | 江苏恒欣仓储设备有限公司 | Digital hemming machine for molding oversized-diameter spiral steel plate bin |
| CN114618968B (en) * | 2022-03-23 | 2023-09-05 | 太原理工大学 | Current stabilization applying device and method for electric field auxiliary cross wedge rolling axle |
| CN115815338B (en) * | 2023-01-10 | 2023-07-04 | 太原理工大学 | Hydraulic pressing system suitable for double-machine linkage ultra-large shaft wedge cross rolling mill |
-
2003
- 2003-07-24 CN CN 03146134 patent/CN1202927C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014139320A1 (en) * | 2013-03-12 | 2014-09-18 | Zhang Hengchang | Roll sleeve type steel plate planetary rolling mill |
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| CN1476946A (en) | 2004-02-25 |
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Granted publication date: 20050525 |