CN1519064A - Reciprocatting type pipe mill with long stroke - Google Patents
Reciprocatting type pipe mill with long stroke Download PDFInfo
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- CN1519064A CN1519064A CNA031151612A CN03115161A CN1519064A CN 1519064 A CN1519064 A CN 1519064A CN A031151612 A CNA031151612 A CN A031151612A CN 03115161 A CN03115161 A CN 03115161A CN 1519064 A CN1519064 A CN 1519064A
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Abstract
A long-stroke reciprocating tube mill is composed of a main case, main body, hydraulic system, and electric control system. In said main case, their are a rolling module having a pair of rollers which can rotate and axially and linearly move, a driver having a motor whose mainshaft is connected via shaft coupling to the input shaft of rolling module, and a commutator with hydraulic clutch and speed variator, which are controlled by position recognizer.
Description
Technical field
The present invention relates to pipe mill, particularly a kind of reciprocating type tube rolling machine.
Background technology
Metal rolled is the most frequently used a kind of mode of metal cold deformation processing, and to tubing processing, rolling also is the means of passing through.Tube rolling is divided into oblique milling and axial rolling.Oblique milling belongs to the continuous rolling category, is that two roller Diesel pipe mills or three roller Assel mills all are to realize that tube reducing subtracts the wall rolling mill practice in the hollow billet rotation is advanced.Axial rolling is non-continuous rolling, forms a ring-type deformation space by roll and plug, and hollow billet is forced through this deformation space, realizes that tube reducing subtracts wall.
Because the roll of ring-type and hollow billet have only very little one section contact arc, can only allow tubing that very little deflection is arranged with circular roll.When roll turns round, if the curved surface of roll and hollow billet contact portion changes,, roll and hollow billet contact portion are also diminished gradually promptly along with hollow billet advances vertically, then the tube reducing of hollow billet subtracts the wall situation and will change.So caused a kind of pilgrim rolling machine invention of (being called as the Herbert pipe mill) that is called as in Russia.
Consult shown in Fig. 1-2, a pair roller 3 of pilgrim rolling machine is in the rotating while, and its gyroaxis itself advances along axial (shown in the arrow) of hollow billet 1.Rely on roll 3 surperficial tapered passes, roll 3 when revolution is advanced and the plug 2 of tubing inside constituted an annulus that constantly dwindles, finish the operation of rolling that the hollow billet tube reducing is subtracted wall thus.
As shown in Figure 3-4, a pair roller 3 of pilgrim rolling machine is installed on two roll shafts 7, and roll shaft 7 two ends by the bearings that is installed in the bearing block 8, and therefore 3, two roll shafts 7 of a pair roller have four bearing blocks 8.Bearing block 8 is installed in the memorial archway 6, by depressing (or pressing) device two roll shafts 7 and two memorial archways 6 is connected firmly.In addition, a main shaft drives down at power (d.c. motor or alternating current motor or hydraulic motor), and by the reductor back revolution of suitably slowing down, a crank 4 is installed on the main shaft, produces the gyration around this, and drives the connecting rod 5 that is attached thereto and move.Connecting rod 5 other ends then be installed in the glide mirror (plane) on memorial archway 6 link to each other.Like this, by toggle, rotatablely moving of prime mover is converted into the horizontal reciprocating movement of memorial archway 6.When memorial archway 6 moves back and forth with connecting rod 5, do horizontal reciprocating movement thereby drive bearing block 8 drive rolls 3.
Obviously, when roll 3 is done horizontal reciprocating movement with memorial archway 6, also must rotate around roll shaft 7, for this reason, swiveling gear 9 is housed at an end of roll shaft 7.A swiveling gear 9 and a tooth bar 10 are meshed.When roll shaft 7 was done horizontal reciprocating movement with memorial archway 6, swiveling gear 9 and tooth bar 10 also had relative motion.This is because tooth bar 10 is fixed on the support (figure does not show), so tooth bar 10 will force gear 9 revolutions.Thus, roll 3 produces rotatablely moving around roll shaft 7 simultaneously when making horizontal reciprocating movement.Roll 3 surfaces are processed with tapered pass groove according to technological requirement.Roll 3 is when advancing, and roll 3 rolls with the rolled piece surface and contacts, and the annular space that groove surface and plug 2 constitute evenly shrinks also in continuous variation.Rolled piece is subjected to the three-dimensional compressive stress that plug 2 and roll 3 surfaces give, thereby tube reducing subtracts wall, finally reaches the distortion of expection.
Can find out from above statement, the pilgrim rolling machine by be installed in toggle on the main shaft drag mill housing do level to reciprocating motion.Being fixed on tooth bar on the support forces roller gear with its engagement to produce again to rotatablely move, drive the roll revolution thus.To the profile material or the band and strip rolling mill of routine, the memorial archway rigidity is fixed on the basis, and roll mandrel is dragged by main drive gear and does initiatively rotation.The memorial archway of pilgrim rolling machine moves back and forth, and roll is imported passive rotation by tooth bar, and does forward and reverse rotation with horizontal reciprocating movement.This is its feature that is different from general milling train.
The reciprocating type rolling mill practice that the pilgrim rolling machine is embodied, favourable because the metal in cold roller and deformed district is in the three-dimensional compressive stress state to being out of shape, can obtain big deflection, high relatively precision.Reciprocating type rolling mill practice does not have metal loss substantially at cold-rolled process, and can reduce a part of pressure head, operation in the middle of the annealing etc., and this also is the advantage of this technology essence.Thus, the pilgrim rolling machine becomes a kind of rolling equipment that is widely used in the tubing processing.
This reciprocating type (or claim periodic) is rolling from the invention of pilgrim rolling machine, has gone through improvement repeatedly, and the pilgrim rolling machine of being produced by German De Make company in the world today has reached very high level.Its per minute is rolling being up to 190 times back and forth.Also reach several perfect conditions to the greatest extent in order to overcome the vertical and horizontal absorbing mechanism that moves back and forth at a high speed owing to frame that the vibration that brings designs.But the basic exercise member of pilgrim rolling machine does not have the variation of essence.
With the development of commercial production scale, roll is increasing, and the memorial archway rigidity is also more and more stronger, and the pilgrim rolling machine is because whole memorial archway and roll parts all are movement parts, so in raising speed, improve the output aspect and just be very restricted.
In addition, mill speed not only depends on reciprocal time, priorly also depends on rolling stroke, also is the distance that memorial archway moves horizontally.Memorial archway is big more with the horizontal range that connecting rod moves, and available rolling stroke is just big more, and mill speed is also just fast more.So early stage milling train is used half concave roll more, because rolling stroke is very short.And tend to annular distance type roll now, can be at the long rolling groove of same roller diameter surface arrangement.The mode that adopts the horseshoe type roll is also arranged, and this is the double replacing convenience of half pass and the advantage of the long stroke of annular distance type of getting.
The pilgrim rolling machine is formed the rolling deformation space jointly by the change section pass and the plug of roller surface even variation when realizing the tube rolling deformation technique.When roll moved ahead, deformation space changed from small to big when instead going from large to small.This is that discontinuous periodicity is rolling.After finishing a rolling cycle, send slew gear to hollow billet is sent to forward, give revolution at a certain angle simultaneously.Go up the tube surfaces that one-period is in open section when rolling like this and just be turned back to the roll compression section, such rolling mode obviously will be told different interval functionality when pass is arranged.
As shown in Figure 4, roughly rolling interval can be divided into 6 sections.The 1st section OA, roll, plug do not contact with hollow billet at this moment, and milling train can send before the hollow billet revolution also, belongs to the swivel feeding section.The 2nd section AB, roll contact with hollow billet and force capillary outer diameter to shrink, and plug does not contact, and is called sizing reduction section.The 3rd section BC, roll all contacts with hollow billet with plug, hollow billet is forced to tube reducing and subtracts wall in the common annulus of forming of roll plug, be called reduction section, the 4th section CD, annulus and hollow billet that roll and plug constitute are close to, but have only slight deflection, be called as pre-Strain During Finishing Stage, the 5th section DE is sizing section.This section purpose is to guarantee that the finished product stocking has uniform surfaces externally and internally and the corresponding size that meets technological requirement.
Above-mentioned the 4th, 5 two section function distinguished so not tight sometimes, will be rolled into the QC expansion to smart as far as possible degree in progressive process.The 6th section EF is the section of deviating from.This section is the inverted tubaeform shape, guarantees that the stocking after the finishing is deviate from smoothly.For some technological design, this section is also sent to and rotating function, and promptly production tube and roll plug break away from this section, are sent to simultaneously and turn round.
Pipe mill to the different model specification, its rolling stroke always comprises above-mentioned several functional areas, some small-sized pipe mills, rolling stroke has only 400 millimeters, also there is the revolution section of sending at two ends, and corresponding deformation section is just very short, and to the rolling a bit stroke of large-scale pipe mill up to 1 meter, the revolution section of sending to is also reserved at two ends, but deformation section shared ratio in whole rolling stroke is just much bigger.So rolling stroke that the designer of pipe mill rectificates as far as possible.But rolling stroke is determined by toggle, long rolling stroke will make the design of toggle strengthen, the quality that moves back and forth accordingly increases the weight of greatly, it is very complicated that balance sysmte becomes, so the existing rolling stroke of reciprocating type tube rolling machine reaches and belongs to large scale computer about 1 meter, has only seldom high-caliber manufacturer to provide.
From the above mentioned, though the pilgrim rolling machine still occupies an important position in rolling industry, but it has but hindered further developing of it from the memorial archway structure that profile material or band and strip rolling mill followed, and is especially existing serious obstacle aspect the raising mill speed and the rolling stroke that extends.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned prior art and provide a kind of for the rolling reciprocating type tube rolling machine of long stroke.
Technical scheme of the present invention is as follows:
A kind of long stroke pipe mill, comprise main frame casing, lathe bed, hydraulic system and corresponding electric-control system, wherein, the lathe bed that links to each other with the main frame casing is used to install the shell that is rolled, be provided with milling train assembly, rolling mill actuating device and reversing arrangement in the main frame casing, be characterized in:
The milling train assembly comprises a pair roller, wherein, each roll and a roll mandrel are affixed, these roll mandrel two ends are affixed with the bearing shell of both end sides respectively by bearing, single-revolution gear and this swiveling gear and a stationary rack also are housed on this roll mandrel are meshed, make the gyration of this roll mandrel produce along its axial linear movement;
Rolling mill actuating device comprises a pair of motor, wherein the output shaft of each motor links to each other by a power shaft of a shaft coupling and milling train, one end of this power shaft links to each other with the bearing shell of its same side by a bearing, and this power shaft also is connected with this roll mandrel by bearing, thereby makes the roll mandrel of this milling train directly drag revolution by this motor;
This milling train reversing arrangement comprises by hydraulic clutch that is subjected to the position identification device signal controlling and gear.
This position identification device comprises travel switch and the angular display unit that is installed on the swiveling gear.
This clutch comprises the epicyclic transmission mechanism of being located in the two bearings shell.
This epicyclic transmission mechanism comprises input tooth and the corresponding sun gear that is fixed in power shaft.
Upper and lower two cover bearing shells are connected by the tension force bolt that can bear roll-force.
This motor is a hydraulic motor.
The present invention has compared following advantage with existing pilgrim rolling machine:
One, the present invention has adopted initiatively roll, be that roll mandrel of the present invention directly drags revolution by prime mover, and on stationary rack, roll generation along the axial linear movement of roll shaft by the swiveling gear of installing on the roll mandrel, that is to say the toggle of having cancelled original pipe mill in the present invention.
In the memorial archway rectilinear motion that toggle transformed, because the angle of revolution is inhomogeneous, inhomogeneous and the straight-line quality of rotating mass is bigger, corresponding balanced controls are just very complicated, and rectilinear motion distance big more (rolling stroke is long more) then balanced controls are complicated more, all very short reason of rolling stroke of Here it is existing Pilger milling train.
And in the present invention, the roll revolution is initiatively, and being rolled on stationary rack by swiveling gear produces the rectilinear motion of roll shaft, so, strengthen the diameter of swiveling gear and the length of tooth bar and just can strengthen rolling stroke, and the rolling stroke that increases does not bring extra vibration.Moving mass is lower than old-fashioned pipe mill in the whole operation of rolling, if do not consider roll-force then the quality that moves around is very even, does not need extra balanced controls.
Two, the present invention has cancelled the mill housing that existing Pilger milling train adopts.The memorial archway that is adopted in band mill has been continued to use last 100 years as a kind of traditional concept by the Pilger milling train.The original effect of mill housing is to allow roll move up and down in memorial archway to regulate opening degree, bears the rolling counter-force that rolled piece imposes on simultaneously when rolling.As can be seen from Figure 3, when roll gave deformation of rolled wire power, this distortion counter-force was delivered on the memorial archway by bearing block, and the rigidity of memorial archway has determined to be rolled the controlled dimensions of part.The adjustment that is not relied on the roll drafts by rolled piece of pilgrim rolling machine.But, also be that the pilgrim rolling machine a pair roller that is in operation is rigidly fixed in the mill housing by bearing block by being come in to change itself cross dimensions before back and forth along tapered pass groove by rolled piece (hollow billet).If there is not memorial archway, but by fixture such as the bolt that enough rigidity are arranged bearing block is fixed together, existing pilgrim rolling machine can move in the same old way.And, this no memorial archway design, roll-force be can be described as the short-stress path structure, require equal rigidity, the cross section can be much smaller, and the memorial archway itself that also is existing pilgrim rolling machine is exactly a kind of very reasonably design, only as a pair roller is installed, be connected these two kinds of functions with connecting rod comparatively convenient, used till today.
To the milling train of the rolling size of difference, the memorial archway size also differs, and surpasses in 1 meter the pipe mill at stroke; the quality of rolling memorial archway is very large; its inertia is also very big, and therefore the complexity of bringing milling train to manufacture and design does not thus have memorial archway and play a part very positive to reducing reciprocating inertia undoubtedly.And, owing to cancelled memorial archway, cancelled crank connecting link, add topping roll and initiatively turn round, make that long stroke rolling mill practice is able to light realization in the present invention.For example, in existing Pilger milling train, even big as 250 milling trains, stroke is generally also only below 1.4m.The deformation process of reciprocating type tube rolling machine is decided by rolling stroke.During the short stroke distortion, deformation force is corresponding very big, and the rolled piece surface quality is also influenced, to same deformation process, suitably the rolling stroke of lengthening just can reduce roll-force, and when rolling stroke can strengthen at double, the productivity ratio of tube rolling and the surface quality of rolled piece all improved a lot.The present invention can be lengthened to 3 meters with rolling stroke easily, even 4 meters.Because be roll initiatively, provided by the inventionly be actually a kind of route-variable milling train, also be that the roll angle of revolution can surpass a week, promptly spend to adjustment 150 degree from about 380, determined maximum rolling stroke by roller diameter.Can stroke be shortened by Position Control when needing, not pursue although short stroke is not the present invention, route-variable provides the space that changes to technology after all.
Description of drawings
Fig. 1 is a pilgrim rolling machine tube rolling deformation principle schematic diagram.
Fig. 2 .1 is a pilgrim rolling machine roll schematic diagram.
Fig. 2 .2 is the diagrammatic sketch of roll side shown in Fig. 2 .1.
Fig. 3 .1 is a pilgrim rolling machine host part crank connecting link schematic diagram.
Fig. 3 .2 is a pilgrim rolling machine memorial archway modular construction schematic diagram.
Fig. 4 is a pilgrim rolling machine rolling deformation principle schematic
Fig. 5 is a rolling mill roller structural representation of the present invention.
Fig. 6 is a pipe mill rolled parts assembly schematic diagram of the present invention.
Fig. 7 is a pipe mill hydraulic cushion structural representation of the present invention.
The specific embodiment
Basic design philosophy of the present invention is embodied in the following aspects:
One, the present invention has adopted initiatively roll, and roll mandrel promptly of the present invention directly drags revolution by prime mover.
Two, the present invention makes initiatively roll centre of gyration generation along the linear movement of tooth bar length direction by the engagement of swiveling gear and stationary rack, satisfies reciprocating type rolling mill practice breaker roll in the rolling requirement of rolled piece surface rolling with this.
Three, the present invention has cancelled traditional mill housing.The roll mandrel two ends are fixed on bearing block (bearing shell) by bearing.The metal (upper seat is connected by the rigidity bolt that bears roll-force.
Four, the present invention adopts hydraulic motor to import as power.The desired mill speed of rolling mill practice is realized by the reduction box that is installed in axle head.Reduction box and roll bearing supporting are combined into one.
Five, the function of down regulating (promptly regulating reciprocating frequence) by maximum mill speed is realized by the input variable of regulator solution pressure motor.When the hydraulic pressure input quantity reduced by half, the roll speed of gyration also can reduce by half.
Six, the memorial archway realized by toggle of traditional pilgrim rolling machine moves back and forth, and changes gyratory directions by the active roll in this programme and changes and realize.But initiatively the break-in of roll can not simply be solved by the transformation of hydraulic motor gyratory directions, but by a cover gear, handle commutation by hydraulic clutch, be that this programme high speed hydraulic motor has only a gyratory directions all the time, control different gears by clutch and realize initiatively roll break-in, produce reciprocating motion thus.
Seven, rolling mechanism level is absorbed by the input control (oil pressure and flow) of hydraulic motor and adjustable hydraulic bjuffer to moving back and forth the vibration that produces.
Basic thought according to the invention described above, consult Fig. 6-7 as can be known, pipe mill of the present invention comprises main frame casing 45, lathe bed, wherein, main frame casing 45 is a hardware, its size for example can be: long 3.2m, wide 2.4m, high 1.8m, its base are provided with for example two tracks of 500 mm wides, move back and forth thereon for roller assembly, on relevant position, casing 45 middle part, be equipped with and the tooth bar 25 that combines of swiveling gear 23 up and down, when roll mandrel 21 rotations, swiveling gear 23 rolls on tooth bar 25, forms the reciprocating motion of the forward-reverse of roll mandrel 21.Whole main frame casing 45 can be bolted on the basic part (figure does not show) by its bottom.
Main frame casing 45 links to each other with the rear portion lathe bed.Lathe bed is identical with the lathe bed of pilgrim rolling machine, it mainly acts on is quilt to be rolled shell be installed on it, and sends to and revolute function, and the every advance and retreat of pipe mill main frame once, the feed mechanism that shell is installed on the lathe bed is passed one section forward, forces the revolution certain angle simultaneously.The transmissions at different levels of pipe mill of the present invention are all carried out with hydraulic motor or hydraulic cylinder, so outside main frame casing 45, lathe bed, also have a cover hydraulic system and a corresponding electric-control system.
A pair of movably roll 24 initiatively is installed in main frame casing 45, and initiatively roll 24 is by power motor such as fluid motor-driven that the present invention exemplified, and hydraulic motor is by the high-pressure hose fuel feeding.Lathe bed and hydra-electric system are identical with traditional pipe mill operating principle, but rolling mechanism and the traditional type installed in the main frame casing differ.
As shown in Figure 6, in the pipe mill of the present invention, two best identical active roll 24 usefulness tension force bolts 40 of cover and nut 39 are installed together, and constitute the rolling mechanism of active of pipe mill of the present invention.
The rolling mechanism of active of the present invention can describe in detail in conjunction with Fig. 5.As shown in Figure 5, an input motor 11 links the output shaft of motor and the power shaft 26 of milling train by a shaft coupling 11.1, wherein, the model that described motor 11 adopts in the present invention is A2F80W2S2, and this model flow is 268L/min, and peak power is 156KW; Two main shafts of milling train are respectively adorned (oil) motor, and promptly this milling train input power is 312KW.If be used in large-diameter steel pipe when rolling, can select model A2F160 for use, even the A2F250 oil motor, input power can improve much like this; Shaft coupling 11.1 is spline housing in this example.
Power shaft 26 links to each other with roll mandrel 21 by bearing 28, and also links to each other with bearing shell 38 by bearing 36 at the one end.In addition, roll mandrel 21 links to each other with bearing shell 15,38 respectively by bearing 22,27.
On power shaft 26, also be connected with input gear 12,34 rigidly, lay respectively among the bearing shell 15,38 of both sides, wherein, input gear 12 is meshed by its external tooth and input sun gear 13, and form a sun gear that floats input together, in this example, the number of teeth of sun gear use is 30.
Planetary gear is installed on planet carrier, and one has three groups, and wherein, forward input duplex planet tooth 14 comprises duplex tooth 14.1,14.2, and in this example, the number of teeth of duplex tooth 14.1 is 30, and the number of teeth of duplex tooth 14.2 is 17.
One clutch hold-down cylinder 19 by the action of clamping piston 18, can make the driven gear ring 17 (its number of teeth is 90 in this example) that an active friction plate 16 and is equipped with friction plate be in joint or released state.Active friction plate 16 links to each other with bearing shell 15 by the profile of tooth keyway on the bearing shell 15, therefore not rotation mutually, and promptly active friction plate 16 can slide vertically but can not rotate.When clamping piston 18 compressed active friction plate 16 and driven gear ring 17, driven gear ring 17 and bearing shell 15 did not just have relative motion, so driven gear ring 17 does not rotate.At this moment, if sun gear 13 input that turns clockwise, driven gear ring 17 is motionless, and duplex tooth 14.1,14.2 promptly has output.Output gear 20 under the driving of duplex tooth 14.1,14.2 also around turning clockwise.In this example, this output number of teeth is 59, so overall ratio is 29.49.Output gear 20 and input tooth 12 rotates in the same way, thereby drive roll mandrel 21 turns clockwise, and with the affixed roll 24 of this roll mandrel 21 and swiveling gear 23 also around turning clockwise.
Swiveling gear 23 and stationary rack 25 are meshed, and therefore, when swiveling gear 23 turned clockwise, roll 24 advanced along tooth bar 25 directions.Roll 24 rolls on by rolled piece and advances, and forms the operation of rolling.
The distance that roll 24 advances depends on the length that swiveling gear 23 pitch circles launch, and in this example, the diameter of roll 24 is Φ 720, and swiveling gear 23 pitch diameters are Φ 696, so the rolling stroke (when returning three-sixth turn) of 2186mm can be arranged.Actual rolling stroke is 2000mm, and quite the angle of revolution is 329 degree.
When roll mandrel 21 when tooth bar 25 advances to its stroke end, send signal by position indicator, in the present embodiment, it is made of jointly one group of travel switch and one group of angular display unit that is installed on the swiveling gear 23, cause the input pressure and the flow of main transmission motor 11 to reduce, roll mandrel 21 slows down.Roll bearing shell 38 contacts with hydraulic bjuffer, as shown in Figure 7, plunger 44 is with compacted, because each hydraulic bjuffer all links to each other with accumulator 41 in the loop, and there is check valve 42 to control not oil returns of hydraulic bjuffer, plunger 44 is pressed towards plunger case 43 bottoms, circuit pressure is raise, thus the inertia force of absorption portion roll stacks.
Reduce in output, when absorbing inertia force, the hydraulic clutch commutation, 19, the 29 all oil-feeds of clutch hold-down cylinder, clamping piston 18 retreats, and active friction plate 16 and driven gear ring 17 separate, and the clamping piston 30 of the other end advances.Active friction plate 31 is pressed on the driven gear ring 32, and active friction plate 31 links to each other by the profile of tooth keyway with bearing shell 38.Promptly when clutch engaged, driven gear ring 32 linked to each other with bearing shell 38 by active friction plate 31, and gear ring is not rotated by locked.
Another input tooth 34 and the sun gear 35 that connect firmly on the power shaft 26 combine by interior external tooth, constitute the sun gear of another input of floating, because gear ring 32 is by locked, sun gear 35 drives output gear 37 by duplex tooth 33.1 and 33.2 and rotates, and drives roll mandrel 21 revolutions.
This group epicyclic transmission mechanism overall ratio is-28.45 in this example, also is that sun gear is similarly clockwise input, and output is counterclockwise.In this routine roll the two kinds of states that change, reverse are just arranged thus.Roll mandrel and tooth bar are meshed.The horizontal movement that just the changeing, reverse of roll mandrel produces is to advance and retreat, and promptly imports motor and turns round continuously, and the hydraulic oil of major loop flows along a direction, does not commutate back and forth because of high-frequency commutation.
Move back and forth the commutation that relies on hydraulic clutch in this example, clutch cylinder diameter Φ 60, the friction clutch of each planetary mechanism have 5 clutch cylinders that enough thrusts are provided.
Active friction plate and driven tooth ring gap have only several millimeters in this example.Be that piston rod displacement is very short, this is necessary in the 0.1S left and right sides for guaranteeing commutating period.
As can be seen from Figure 5, active roll of the present invention is with power source (hydraulic motor), reducing gear, and reciprocating mechanism (two cover reducing gears, a cover forward, the reverse and corresponding swiveling gear of a cover) and roll are all combined and are formed an active roll.
With the roll mandrel shown in Fig. 5, two stacks link together with tension force bolt 40, as shown in Figure 6, just form the rolling mechanism of a complete set of the present invention.
Two rolls up and down, the transmission mechanism of the right and left is identical, have only swiveling gear to arrange the position to differ, a tooth bar is installed in topping roll swiveling gear bottom, a tooth bar is installed on bottom roll swiveling gear top, and when topping roll turned clockwise, bottom roll was rotated counterclockwise, whole roll stacks is advanced along same direction, or retreats.
When rolling stroke advanced and retreats the limit, roll hole shape groove and conventional Pilger milling train be the same to be reserved revolution and sends the space to, and this moment, rolled piece was turned round, and sent to, to enter next pepriodic rolling.Owing to cancelled crank connecting link and memorial archway, replace initiatively roll, rolling stroke can be extended a lot.This routine rolling stroke is 2000, and when changing specification, in the time of need reducing amount of rolling, the present invention also provides the possibility that can shorten stroke.Because be not the reciprocating stroke that forms fixed length by crank connecting link, but initiatively roll oneself walking, position sensor is determined stroke length, with the scope of position sensor, adjusts weak point a bit, rolling stroke is a little just short.2000 rolling stroke also can be adjusted to 1000 in this example, even shorter, such as 500.Certainly, stroke has been lacked, the mutually deserved adjustment of roller curve, and guarantee has certain space at stroke two end rolls and rolled piece, so that the revolution of rolled piece is sent to.
The present invention has finished production tube rolling that copper pipe with Φ 70 * 7 rolls Φ 25 * 1.5 at the scene, the copper pipe of Φ about 70 generally is to come rolling with medium-sized pipe mill by traditional technology, such milling train pair rolling stroke can't be once with the rolling Φ 25 * 1.5 of the copper pipe of Φ 70 * 7 less than 800 millimeters.
It is rolling that the present invention has also finished the copper pipe of Φ 115 * 20 → Φ 50 * 2.5, conventional large-scale pipe mill is difficult to the rolling of competent aximal deformation value like this, only on a kind of roll line that is called as Outokumpu technology, finished the rolling of aximal deformation value like this with three roller A Saier milling trains (oblique milling).
The present invention has attempted the rolling of two extreme examples at the scene simultaneously, demonstrates the initiatively rolling superiority of the long stroke of roll.
Claims (6)
1. one kind long stroke pipe mill, comprise main frame casing, lathe bed, hydraulic system and corresponding electric-control system, wherein, the lathe bed that links to each other with the main frame casing is used to install the shell that is rolled, be provided with milling train assembly, rolling mill actuating device and reversing arrangement in the main frame casing, it is characterized in that:
The milling train assembly comprises a pair roller (24), wherein, each roll (24) is affixed with a roll mandrel (21), this roll mandrel (21) two ends are affixed with the bearing shell (15,38) of both end sides respectively by bearing (22,27), single-revolution gear (23) and this swiveling gear (23) and a stationary rack (25) also are housed on this roll mandrel (21) are meshed, make the gyration of this roll mandrel (21) produce along its axial linear movement;
Rolling mill actuating device comprises a pair of motor (11), wherein the output shaft of each motor (11) links to each other by a power shaft (26) of a shaft coupling (11.1) and milling train, one end of this power shaft (26) links to each other with the bearing shell (38) of its same side by a bearing (36), and this power shaft (26) also is connected with this roll mandrel (21) by bearing (28), thereby makes the roll mandrel (21) of this milling train directly drag revolution by this motor (11);
This milling train reversing arrangement comprises by hydraulic clutch that is subjected to the position identification device signal controlling and gear.
2. long stroke pipe mill as claimed in claim 1 is characterized in that, this position identification device comprises travel switch and the angular display unit that is installed on the swiveling gear (23).
3. long stroke pipe mill as claimed in claim 1 is characterized in that, this clutch comprises the epicyclic transmission mechanism of being located in the two bearings shell (15,38).
4. long stroke pipe mill as claimed in claim 3 is characterized in that, this epicyclic transmission mechanism comprises input tooth and the corresponding sun gear that is fixed in power shaft (26).
5. long stroke pipe mill as claimed in claim 1 is characterized in that, upper and lower two cover bearing shells are connected by the tension force bolt that can bear roll-force.
6. long stroke pipe mill as claimed in claim 1 is characterized in that this motor (11) is a hydraulic motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031151612A CN100486723C (en) | 2003-01-24 | 2003-01-24 | Reciprocatting type pipe mill with long stroke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031151612A CN100486723C (en) | 2003-01-24 | 2003-01-24 | Reciprocatting type pipe mill with long stroke |
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| CN1519064A true CN1519064A (en) | 2004-08-11 |
| CN100486723C CN100486723C (en) | 2009-05-13 |
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| CNB031151612A Expired - Fee Related CN100486723C (en) | 2003-01-24 | 2003-01-24 | Reciprocatting type pipe mill with long stroke |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102806230A (en) * | 2011-05-30 | 2012-12-05 | 王晓邦 | Floating core rod rolling copper pipe process and equipment for two-roll reciprocating-type pipe mill |
| CN105478479A (en) * | 2016-01-25 | 2016-04-13 | 南京宝泰特种材料股份有限公司 | Hydraulic reciprocating mechanism of pipe mill |
| CN105592945A (en) * | 2013-08-26 | 2016-05-18 | 山特维克原料技术德国公开股份有限公司 | Cold pilger rolling mill and method for forming a tube shell to a tube |
| CN107123487A (en) * | 2017-07-06 | 2017-09-01 | 合肥神马科技集团有限公司 | A kind of rotational roller pressing molding device |
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| CN111195653A (en) * | 2020-01-07 | 2020-05-26 | 宁波凯力精密机械有限公司 | Rolling structure and method for constant pure rolling |
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Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU541520A1 (en) * | 1975-01-29 | 1977-01-05 | Челябинский Ордена Ленина Трубопрокатный Завод | Automatic rolling mill control with reciprocating motion |
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2003
- 2003-01-24 CN CNB031151612A patent/CN100486723C/en not_active Expired - Fee Related
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| CN115318828B (en) * | 2022-09-02 | 2023-10-27 | 张家港华裕有色金属材料有限公司 | Rolling method for cold-rolled metal pipe |
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