CN205732288U - A kind of point of three-roller Y shaped milling train of transmission direct-drive type - Google Patents

Abstract

nullA kind of point of three-roller Y shaped milling train of transmission direct-drive type，Overcome existing three-roller Y shaped milling train c-type gear-box rack construction complexity cost high，Radially guiding mechanism linkage adjusts that manufacture requirements is high and final drive shaft and the relatively low problem of housing rigidity，Feature is 3 groups of identical mair motor and reductor is respectively arranged in base and c-type frame or is directly mounted in rolling-mill housing，Pass through cross joint、Splined shaft、Spline housing is connected with main shaft，3 main shafts are separately mounted in 3 eccentric bushings，3 eccentric bushings are connected by 3 the worm and gear guiding mechanisms independently being arranged in rolling-mill housing and can be implemented separately and the most accurately adjust，The accurate adjustment of roll location is realized by adjusting threadeding between axially adjustable nut and eccentric bushing，Provide the benefit that，The axially and radially position that can realize main shaft the most accurately adjusts，Power transmission shaft and housing rigidity are high，Improve milling train work efficiency and rolling quality，And manufacture、Assembling and maintenance cost are relatively low.

Description

A kind of point of three-roller Y shaped milling train of transmission direct-drive type

Technical field

This utility model belongs to Mill Technology field, particularly to the one of the stepless accurate adjustment of radial and axial roll location Plant point three-roller Y shaped milling train of transmission direct-drive type.

Background technology

Equipped with 3 roll mandrels in each rolling-mill housing of three-roller Y shaped milling train, they are perpendicular to rolling centerline, each other in 120 ° of layouts, this type milling train has rolling stock even tissue, relatively good to the parcel of rolling stock, can roll intensity High, fragility is big etc. is difficult to use the metal material of conventional mill roll forming, and it is high to have rolling workpiece surface geometry precision Main feature, is widely used in that special steel, titanium alloy, magnesium alloy, tungsten-molybdenum alloy etc. are a series of has higher rolling difficulty In manufacture of materials.

Three-roller Y shaped milling train of the prior art, some employing bevel gear group central driving, or by c-type frame gear-box Group transmission, their common feature is that 1 motor-driven 1 main axis is assigned to 3 roller mill main axles on 3 directions On, driving 3 roll work, wherein, bevel gear central driving system, the utility model such as Application No. 96206749.0 is open A kind of y-type rolling mill, including frame and 3 rolls being arranged on 1 driving shaft and 2 driven roll shafts, be characterized in installing 3 diameters on 1 driving shaft and 2 driven roll shafts and the identical roll of rotating speed, the roll surface outer rim of 3 rolls contacts with each other Constitute rolling groove；Having 2 bevel gears equipped with 1 roll, the both sides of roll on driving shaft, the outside of 2 bevel gears is equipped with 2 Bearing, bearing is fixed in frame, and actively shaft drive is in one end of drive roll, and 2 driven roll shafts respectively roll equipped with 1 Roller, 1 bevel gear and 2 bearings, 2 bevel gears on main fulcrum engage, actively with the bevel gear on 2 driven roll shafts respectively 2 bearings on axle are arranged on the outside of 2 bevel gears of roll both sides；There is bearing holder (housing, cover) one end of bevel gear on driven roll shaft Cylinder, 2 bearings arranged side by side of bearing sleeve inner sleeve, it is sleeved in bearing on driven voller axle, the two ends of driven roll shaft are fixed on machine On frame.Due to bevel geared feature, gear clearance is non-adjustable, so, it is impossible to radial and axial adjusting apparatus is combined to On this type milling train, so, the type milling train the most axially and radially adjusting apparatus, the drafts of roll is non-adjustable, the tune of pass Whole, need the mode manually adding pad to carry out, bring great inconvenience to technique adjustment and control product specification.Application Number be 201320690580.2 utility model disclose " roll of a kind of three-roller Y shaped milling train radially synchronizing controls ", should Utility model relates to the roll radially synchronizing controls of a kind of three-roller Y shaped milling train, its objective is to want to solve three-roller Y shaped milling train Roll radially can not synchronization control, cause pass adjustment inaccurate, mode is loaded down with trivial details, the time is long affect stocking dimensional accuracy and adjustment Problem, this utility model is provided with the active accommodation axle of 1 band servomotor, 2 passive adjustment axles and 2 transition bevel gear set Becoming, 3 adjust axle and become 120 ° of layouts around milling axis, and by Bevel Gear Transmission, adjusting apparatus and roll device are along milling axis It is arranged in parallel.The adjustment principle of this utility model is: the bearing block on roll mandrel maintains static, the outer race on roll mandrel On add eccentric geared sleeve, by servomotor rotation adjuster main shaft, make the gear in adjusting apparatus move in a circle, drive Eccentric gear set on roll device moves in a circle, thus drives roll mandrel to move along a straight line, and reaches 3 same steppings of roll mandrel Move back, it is achieved the accurate adjustment of pass.The bevel geared basic meshing condition of this structure heavy damage, exists and does not conforms to the most greatly Rationality, realizes under sacrificing bevel gear back lash state, is that a kind of helpless and rigid change machine driving condition obtains The method radially adjusted, adjustment amount is the least and is difficult to meet stable drive, and gear ratio is accurate, and reliable operation, efficiency are high, structure is tight The gear-driven basic demand such as gathering, service life is limited.

It is the rotation of a motor to be assigned on 3 directions by the structure of gear-box group transmission, drives 3 roll works Make.Such as Germany's KOCKS milling train, it is simply that a kind of three rollers subtract precision mill, the hole triangle by the roll of 3 120 ° distributions Type, carries out rolling processing, bears 3 direction compressive stress during deformation of rolled wire rolled piece, and this y-type rolling mill has rapidly radially to be adjusted online Whole function, axially adjustable is completed by mechanism, and longitudinal extension is good, stocking uniform force, can obtain high-precision product, but It is problematically, 3 main shaft features of y-type rolling mill 3 120 ° distribution determine the transmission of a main shaft, by gear train machine Structure is assigned on 3 directions, c-type rack construction bulky complex, and the quantity of travelling gear is many and the accuracy of manufacture requires height, makes on year-on-year basis Cause this and repair and maintenance cost the highest.

It is that 3 rolls are respectively arranged in 3 eccentric bushings that y-type rolling mill of the prior art has the structure radially adjusted, Use bevel gear group interrelated between 3 eccentric bushings, when radially adjusting, the outer motor of frame drive wherein 1 eccentric bushing thus Making 3 eccentric bushings complete to adjust simultaneously, there is problems of, this structure makes 3 roll mandrels synchronize to retreat, although can be with one heart Regulation roll location and roll gap, but this structural requirement initial manufacture assembly precision is the highest, also require that whole eccentric bushing group and Manufacture and the assembly precision of bevel gear group are the highest, bring the biggest difficulty to processing and manufacturing, and add equipment cost, with Time, this structure can be only done the product rolling of solid shape, it is impossible to adapts to the rolling of special-shaped product.

Additionally, y-type rolling mill frame of the prior art is bolted on base, the adjustment of roll and replacing Frame must be disassembled and carry out, process is numerous and diverse；And produce in milling train work process steam, flue dust can only to workshop freely Overflowing, oxide skin and the cooling cleaning of water and derivation and frame cleaning and maintenance are the most very inconvenient, are unfavorable for the collection of oxide skin Middle collection, and pollute the working environment in workshop.

Summary of the invention

Technical problem to be solved in the utility model is, in place of overcoming the deficiencies in the prior art and defect, it is provided that permissible Carry out the stepless accurate adjustment of radial and axial roll location and frame strength and rigidity high, it is possible to bear the biggest roll-force can Divide transmission direct-drive type three-roller Y shaped milling train with the one of movement.

The technical scheme that this utility model is used includes base, c-type frame, rolling-mill housing and 3 main shafts, each master Roll is installed on axle, 3 groups of identical mair motor be respectively arranged in reductor base with in c-type frame or identical by 3 groups Mair motor and reductor are directly mounted in rolling-mill housing, and described rolling-mill housing is extensible open frame, described rolling-mill housing by Locking cylinder is locked on the operating position of base, is provided with push cylinder in c-type frame, push cylinder simultaneously with can The rolling-mill housing of moving-out type is connected, and described 3 groups of identical mair motor and reductor are by cross joint and splined shaft and spline housing Connecting, spline housing is connected with main shaft again simultaneously, is cased with portable spline housing Shift cylinder outside spline housing.

Described 3 main shafts are separately mounted in 3 the first eccentric bushings, and 3 the first eccentric bushings are installed in rolling-mill housing also In 120 ° of distributions, described first eccentric bushing (15) is the eccentric bushing of band worm gear, described first eccentric bushing be arranged on rolling-mill housing On worm and gear guiding mechanism be connected, in each first eccentric bushing and between main shaft, axially adjustable nut is installed, logical Toning bearing accurately moves to threaded the axial of main shaft that realize between adjusting nut and the first eccentric bushing, and main shaft is with axial Axial location between adjusting nut is relatively fixed by front thrust bearing and rear thrust bearing.

The front support of described main shaft is four layers of ledge structure, and ground floor step is the location for positioning roll Shoulder, second layer step is splined shaft, and the 3rd step is thread spindle, and the 4th step is supplementary bearing axle, installs and roll on splined shaft Roller, the spline tooth of roll is engaged with splined shaft, is provided with pad between roll right side and locating shoulder, in roll left side Thread spindle on install 2 locking nuts, by locking nut structure, roll is locked on main shaft, on supplementary bearing axle overlap Dress supplementary bearing, is set with the second eccentric bushing outside supplementary bearing, between described first eccentric bushing and the second eccentric bushing by eccentric bushing even Fitting connects；By rotating worm and gear guiding mechanism, drive the first eccentric bushing to rotate, and drive the by eccentric bushing connector Two eccentric bushings rotate, and make main shaft rise or fall, and drive roll to rise or fall, and complete the accurate adjustment of roll radial position.

Described worm and gear guiding mechanism is guiding mechanism independently, drives 3 the first eccentric bushings to complete footpath respectively To adjustment；Worm and gear guiding mechanism is driven by servo-controlled motor or manually adjusts.

Described rolling-mill housing includes that forebay and afer bay, forebay and afer bay are respectively adopted forging rolling special heavy plate entirety and add Work molding, connects and composes an integral-rack by several studs are fixing.

Being provided with the roll work space of Y type distribution in described rolling-mill housing, being provided with in the bottom of described rolling-mill housing can With the traversing guide rail of traversing guide rail and side of transverse shifting on base, it is additionally provided with in the bottom of rolling-mill housing and the distribution of Y type The oxide skin cooling water leadout hole that roll work space leads to, the right side of mmi machine frame or afer bay is also arranged above at least 1 Steam flue dust leadout hole, is additionally provided with push cylinder installing hole in described rolling-mill housing.

Compared with prior art, the beneficial effects of the utility model are:

(1) this utility model have employed and 3 rolls are carried out independent direct connection drive system, and 3 mair motor drive 3 respectively Individual reductor is radially adjusted for setting up on main shaft by cross joint and spline housing and roller mill main axle communications and liaison transmission, this structure Mechanism creates condition, the problem that it also avoid the manufacture, assembling and the maintenance difficult that use c-type frame entirety transmission to bring, simultaneously Manufacture and maintenance cost are greatly reduced it.

Motor and speed reducer is respectively arranged in base and c-type frame or is directly mounted in rolling-mill housing, passes through cross joint Axle, splined shaft, spline housing are connected with main shaft, and 3 main shafts are separately mounted in 3 eccentric bushings, and 3 eccentric bushings roll by being arranged on In machine frame 3 worm and gear guiding mechanism independently is connected and can be implemented separately and the most accurately adjusts, and passes through Adjust threadeding between axially adjustable nut and eccentric bushing and realize the accurate adjustment of roll location, provide the benefit that, can be real The axially and radially position of existing main shaft the most accurately adjusts, and power transmission shaft and housing rigidity are high, improve milling train work efficiency and roll Quality processed, and manufacture, assembling and maintenance cost are relatively low.

(2) this utility model is by adjusting threadeding between axially adjustable nut and eccentric bushing, can realize main shaft Axially accurately mobile, reach to adjust axial location and the purpose of roll gap of roll, it is not necessary to dismounting frame, easy to adjust quick and Precision is high, improves milling train work efficiency and rolling quality.

(3) this utility model can be precisely accomplished 3 roll radial positions adjustment, relative to the y-type rolling mill of prior art Bevel gear group adjust mode, it is possible to achieve on-line tuning, for the accuracy of manufacture, assembly precision require relatively low, but adjust After radial position accuracies more excellent, and the worm-and-wheel gear that 3 roll radial positions use 3 sets independent drives eccentric bushing, can Respectively each roll is adjusted, therefore can with rolling special-shaped material, and, this utility model use band worm gear eccentric bushing Structure, worm gear is integrated with eccentric bushing body, improves the intensity of eccentric bushing, eliminates the assembling between worm gear and eccentric bushing Gap, can avoid assembly precision error.

(4) rolling-mill housing forging rolling special heavy plate overall processing molding of the present utility model, frame metal inside defect is few, machine Frame body can bear the biggest roll-force, frame strength and rigidity height, provides prerequisite bar for accurate rolling high-strength degree material Part；And owing to using integration processing, it is ensured that the assembly precision of each parts of milling train.

(5) this utility model is arranged at least 1 steam flue dust leadout hole in rolling-mill housing side, with workshop in using Smoke evacuation or air exhaust passage connection, the steam and the flue dust that produce in the operation of rolling can be discharged in time, can protect workshop well The cleaning of environment, meanwhile, this utility model is provided with oxide skin cooling water leadout hole bottom rolling-mill housing, with workshop in using Water circulation system connects, and is possible to prevent to cool down water and overflows and utilize cooling water the oxide skin produced in the operation of rolling to be discharged in time Centralized collection, derives cooling wastewater simultaneously and discharges, and the water after settlement treatment continues cycling through use, and oxide skin obtains sufficiently Recycle, not only protect environment but also add economic benefit.

(6) this utility model is provided with traversing guide rail bottom rolling-mill housing, can be traversing from operating position by rolling-mill housing To repair and maintenance position, facilitate the adjustment of topping roll and replacing and the cleaning of frame and maintenance.

Accompanying drawing explanation

Fig. 1 is assembling structural front view of the present utility model,

Fig. 2 is the main sectional view of assembling structure of this utility model milling train,

Fig. 3 is radial direction guiding mechanism of the present utility model and mechanism for axial adjusting schematic diagram；

Fig. 4 is rack construction of the rolling mill schematic diagram of the present utility model.

In figure:

1. base, 2. push cylinder, 3. mair motor, 4. reductor,

5. spline housing Shift cylinder, 6.C type frame,

7. rolling-mill housing,

7-1. forebay, 7-2. afer bay, 7-3. stud,

7-4. roll work space, traversing guide rail bottom 7-5.,

7-6. oxide skin cooling water leadout hole, 7-7. steam flue dust leadout hole,

7-8. push cylinder installing hole, the traversing guide rail in 7-9. side,

8. locking cylinder, 9. spline housing, 10. roll,

11. servo-controlled motor, 12. worm and gear guiding mechanisms,

13. axially adjustable nuts, 14. locking nuts, 15. first eccentric bushings,

16. main shafts,

16-1. locating shoulder, 16-2. splined shaft,

16-3. thread spindle, 16-4. supplementary bearing axle,

17. cross joints, 18. splined shafts,

Thrust bearing before 19., thrust bearing after 20., 21. pads,

22. supplementary bearings, 23. second eccentric bushings, 24. eccentric bushing connectors.

Detailed description of the invention

Below in conjunction with the accompanying drawings the technical solution of the utility model is described in detail.

As depicted in figs. 1 and 2, the described in the utility model point of three-roller Y shaped milling train of transmission direct-drive type uses a point transmission direct connection Type of drive, the technical scheme of employing includes base 1, and fixing connection c-type frame 6 on base 1, on base 1 It is also equipped with the rolling-mill housing 7 of extensible formula, 3 main shafts 16 are installed in rolling-mill housing 7, each main shaft 16 is installed roll 10, described rolling-mill housing 7 is locked on the operating position of base 1 by locking cylinder 8,3 groups of identical mair motor 3 and deceleration Machine 4 is respectively arranged in base 1 and c-type frame 6, or 3 groups of identical mair motor 3 and reductor 4 are directly mounted at rolling machine On frame 7, being provided with push cylinder 2 in c-type frame 6, push cylinder 2 is connected with rolling-mill housing 7 simultaneously；Described 3 groups identical Mair motor 3 and reductor 4 are connected with spline housing 9 by cross joint 17 and splined shaft 18, the while of spline housing 9 the most again with main shaft 16 phase Even, outside spline housing 9, be cased with portable spline housing Shift cylinder 5, this spline housing Shift cylinder 5 can by spline housing 9 with Main shaft 16 connects or separates, and connects or the action that separates is by the flexible drive spline housing 9 of spline housing Shift cylinder 5 vertically Mobile realization；3 main shafts 16 are separately mounted in 3 the first eccentric bushings 15, and 3 the first eccentric bushings 15 are installed on rolling-mill housing On 7 and in 120 ° of distributions, described first eccentric bushing 15 is the eccentric bushing of band worm gear, the first eccentric bushing 15 of band worm gear be arranged on Worm and gear guiding mechanism 12 in rolling-mill housing 7 is connected, and worm and gear guiding mechanism 12 is connected with servo-controlled motor 11, And driven by servo-controlled motor 11, in each first eccentric bushing 15 and between main shaft 16, axially adjustable nut 13 is installed, Realize the most mobile of main shaft 16 by adjusting threadeding between axially adjustable nut 13 and the first eccentric bushing 15, reach To axial location and the purpose of roll gap of adjustment roll 10, the axial location between main shaft 16 and axially adjustable nut 13 is by front Thrust bearing 19 and rear thrust bearing 20 are relatively fixed, and when main shaft 16 rotary work, axially adjustable nut 13 is fixing；

As shown in Figures 2 and 3, described main shaft 16 is an axis, and the front support of main shaft 16 is four layers of ledge structure, the One layer of step is the locating shoulder 16-1 for positioning roll 10, and second layer step is splined shaft 16-2, the 3rd step For thread spindle 16-3, the 4th step is supplementary bearing axle 16-4, on splined shaft 16-2 install roll 10, the spline tooth of roll 10 with Splined shaft 16-2 is engaged, and is provided with pad 21, in roll 10 left side between roll 10 right side and locating shoulder 16-1 2 locking nuts 14 are installed on thread spindle 16-3, by locking nut structure, roll 10 are locked on main shaft 16, at countershaft Hold suit supplementary bearing 22 on axle 16-4, at supplementary bearing 22 outer suit the second eccentric bushing 23, the first eccentric bushing 15 of described band worm gear With second connected by eccentric bushing connector 24 between eccentric bushing 23；By rotating worm and gear guiding mechanism 12, drive band snail First eccentric bushing 15 of wheel rotates, and drives the second eccentric bushing 23 to rotate by eccentric bushing connector 24, make main shaft 16 increase or Decline, drive roll 10 to rise or fall, complete the accurate adjustment of roll radial position；On the basis of the above, at worm and gear Install servo-controlled motor 11 on guiding mechanism 12 additional and can be implemented in the rapid automatized accurate adjustment of line.

As shown in Figure 4, described rolling-mill housing 7 includes forebay 7-1 and afer bay 7-2, forebay 7-1 and afer bay 7-2 It is respectively adopted forging rolling special heavy plate overall processing molding, connects and composes an entirety, so by several studs 7-3 is fixing To ensure that frame metal inside defect is few, can ensure that again frame has the highest intensity and the highest rigidity, frame body energy Enough bear the biggest roll-force, it is possible to ensure milling train each parts assembly precision, provide elder generation for accurate rolling high-strength degree material Certainly condition；Being provided with the roll work space 7-4 of Y type distribution in rolling-mill housing 7, being provided with in the bottom of rolling-mill housing 7 can be On the base 1 of milling train, bottom traversing guide rail 7-5 and the side traversing guide rail 7-9 of transverse shifting, also sets in the bottom of rolling-mill housing 7 There is the oxide skin cooling water leadout hole 7-6 that the roll work space 7-4 with the distribution of Y type leads to, at the forebay 7-of rolling-mill housing 7 The side of 1 or afer bay 7-2 is also arranged above at least 1 steam flue dust leadout hole 7-7, described rolling-mill housing 7 also on be provided with and push away Draw oil cylinder installing hole 7-8.

During use, being arranged on the base 1 of milling train composition by bottom traversing guide rail 7-5 and side traversing guide rail 7-9 can The rolling-mill housing 7 of moving-out type, rolling-mill housing 7 is installed in c-type frame 6 by the hinge installed in push cylinder installing hole 7-8 Push cylinder 2 be connected, when needing unit to adjust or change roll 10 or maintenance rolling-mill housing 7, the locking cylinder 8 on base 1 Unclamping under hydraulic system effect, spline housing 9 is disengaged by spline housing Shift cylinder 5 with main shaft 16, and push cylinder 2 can be by single rack Rolling-mill housing 7 pushes to the maintenance position on base 1 and is adjusted or changes roll 10 or maintenance rolling-mill housing 7, facilitates and rolls The adjustment of roller 10 and replacing and the cleaning of rolling-mill housing 7 and maintenance, thus improve working performance, lower manual labor's intensity；

During additionally, use, the oxide skin that this utility model is provided with bottom frame cools down the water of water leadout hole 7-6 and workshop Blood circulation connects, and is possible to prevent to cool down water and overflows and utilize cooling water in time the oxide skin produced in the operation of rolling to be discharged collection Middle collection, derives cooling wastewater simultaneously and discharges, and the water after settlement treatment continues cycling through use, and is arranged in frame side Steam flue dust leadout hole 7-7 in use connect with smoke evacuation or the air exhaust passage in workshop, in the operation of rolling produce steam Can discharge in time with flue dust, thus protect shopwork environment well.

Claims (6)

1. point three-roller Y shaped milling train of transmission direct-drive type, including base (1), c-type frame (6), rolling-mill housing (7) and 3 main shafts (16), each main shaft (16) is provided with roll (10), it is characterised in that 3 groups of identical mair motor (3) and reductor (4) It is respectively arranged in base (1) above with c-type frame (6) or 3 groups of identical mair motor (3) and reductor (4) to be directly mounted at and rolled In machine frame (7), described rolling-mill housing (7) is extensible open frame, and described rolling-mill housing (7) is solid by locking cylinder (8) locking On the operating position of base (1), c-type frame (6) is provided with push cylinder (2), push cylinder (2) simultaneously with can move The rolling-mill housing (7) going out formula is connected, and described 3 groups of identical mair motor (3) and reductor (4) are by cross joint (17) and spline Axle (18) is connected with spline housing (9), and spline housing (9) is connected with main shaft (16) again simultaneously, is cased with may move in spline housing (9) outside The spline housing Shift cylinder (5) of formula.

A kind of point of three-roller Y shaped milling train of transmission direct-drive type, it is characterised in that described 3 main shafts (16) Being separately mounted in 3 the first eccentric bushings (15), 3 the first eccentric bushings (15) are installed in rolling-mill housing (7) and in 120 ° points Cloth, described first eccentric bushing (15) is the eccentric bushing of band worm gear, described first eccentric bushing (15) be arranged in rolling-mill housing (7) Worm and gear guiding mechanism (12) be connected, in each first eccentric bushing (15) and be provided with axially adjustable between main shaft 16 Nut (13), realizes main shaft (16) by adjusting threadeding between axially adjustable nut (13) and the first eccentric bushing (15) Axially accurately mobile, the axial location between main shaft (16) and axially adjustable nut (13) is by front thrust bearing (19) and rear stops Thrust bearing (20) is relatively fixed.

A kind of point of three-roller Y shaped milling train of transmission direct-drive type, it is characterised in that described main shaft (16) Front support is four layers of ledge structure, and ground floor step is the locating shoulder (16-1) for positioning roll (10), the Quadruple board platform rank are splined shaft (16-2), and the 3rd step is thread spindle (16-3), and the 4th step is supplementary bearing axle (16-4), at spline Installing roll (10) on axle (16-2), the spline tooth of roll (10) is engaged with splined shaft (16-2), roll (10) right side with Being provided with pad (21) between locating shoulder (16-1), the thread spindle (16-3) in roll (10) left side is upper installs 2 lockings Nut (14), is locked at roll (10) on main shaft (16) by locking nut structure, at the upper suit of supplementary bearing axle (16-4) Supplementary bearing (22), is set with outward the second eccentric bushing (23), described first eccentric bushing (15) and the second eccentric bushing at supplementary bearing (22) (23) connected by eccentric bushing connector (24) between；By rotating worm and gear guiding mechanism (12), drive the first eccentric bushing (15) rotate, and drive the second eccentric bushing (23) to rotate by eccentric bushing connector (24), make main shaft (16) rise or fall, band Dynamic roll (10) rises or falls, and completes the accurate adjustment of roll radial position.

A kind of point of three-roller Y shaped milling train of transmission direct-drive type, it is characterised in that described worm and gear is adjusted Complete machine structure (12) is guiding mechanism independently, drives 3 the first eccentric bushings (15) to complete radially respectively and adjusts；Worm and gear Guiding mechanism (12) is driven by servo-controlled motor (11) or is manually adjusted.

A kind of point of three-roller Y shaped milling train of transmission direct-drive type, it is characterised in that described rolling-mill housing (7) It is respectively adopted forging rolling special heavy plate entirety including forebay (7-1) and afer bay (7-2), forebay (7-1) and afer bay (7-2) to add Work molding, connects and composes an integral-rack by several studs (7-3) are fixing.

A kind of point of three-roller Y shaped milling train of transmission direct-drive type, it is characterised in that in described rolling-mill housing (7) being provided with the roll work space (7-4) of Y type distribution, being provided with in the bottom of described rolling-mill housing (7) can be in base (1) The traversing guide rail in the bottom (7-5) and side traversing guide rail (7-9) of upper transverse shifting, is additionally provided with and Y in the bottom of rolling-mill housing (7) Oxide skin cooling water leadout hole (7-6) that the roll work space (7-4) of type distribution leads to, mmi machine frame (7-1) or afer bay (7-2) right side is also arranged above at least 1 steam flue dust leadout hole (7-7), is additionally provided with push-and-pull oil in described rolling-mill housing 7 Cylinder installing hole (7-8).