WO2001049427A1 - Procedes et dispositifs de meulage et d'echange de cylindres - Google Patents

Procedes et dispositifs de meulage et d'echange de cylindres Download PDF

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Publication number
WO2001049427A1
WO2001049427A1 PCT/JP2000/000039 JP0000039W WO0149427A1 WO 2001049427 A1 WO2001049427 A1 WO 2001049427A1 JP 0000039 W JP0000039 W JP 0000039W WO 0149427 A1 WO0149427 A1 WO 0149427A1
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WO
WIPO (PCT)
Prior art keywords
roll
rolling
grinding
rolls
grindstone
Prior art date
Application number
PCT/JP2000/000039
Other languages
English (en)
Japanese (ja)
Inventor
Shigeru Mori
Original Assignee
Hitachi, Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi, Ltd. filed Critical Hitachi, Ltd.
Priority to AU18917/00A priority Critical patent/AU1891700A/en
Priority to PCT/JP2000/000039 priority patent/WO2001049427A1/fr
Publication of WO2001049427A1 publication Critical patent/WO2001049427A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/36—Single-purpose machines or devices
    • B24B5/37—Single-purpose machines or devices for grinding rolls, e.g. barrel-shaped rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B28/00—Maintaining rolls or rolling equipment in effective condition
    • B21B28/02—Maintaining rolls in effective condition, e.g. reconditioning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
    • B21B31/103—Manipulators or carriages therefor

Definitions

  • Roll grinding equipment roll grinding method, port changing equipment, and roll changing method
  • the present invention relates to a roll grinding facility for a roll, a roll grinding method, a roll changing facility, and a roll changing method.
  • Japanese Patent Application Laid-Open No. H10-2494916, which grinds rolls near a rolling mill, and a technique aimed at automating the disassembly of rolls and bearing boxes during roll grinding are used as off-line roll roll grinding technologies.
  • Japanese Patent Application Laid-Open No. Hei 2 (1990) 906 is cited.
  • An object of the present invention is to achieve appropriate automation in a roll shop of a rolling roll. Disclosure of the invention
  • the roll grinding device of the present invention includes: a housing; two rolling rolls each including a bearing box in the housing; a rotary driving device that rotationally drives one of the rolling rolls; the one rolling roll and the other rolling roll A roll height position adjusting device capable of contacting and separating the rolls; and a grinding device for grinding the rolls while rotating the other roll by rotating the one roll. It is characterized by.
  • one of the two rolling rolls each provided with a bearing box in the housing is driven to rotate, and the one rolling roll and the other rolling roll are brought into contact with each other.
  • Each of the rolling rolls is ground while the other rolling roll is rotated.
  • the roll exchange equipment of the present invention comprises a rolling mill having a rolling roll, a roll grinding device for grinding the rolling roll, and a pair of rolling rolls with a bearing box extracted from the rolling mill. And a transfer device for transferring to a roll grinding device, wherein the transfer device is a belt-type transfer device.
  • a pair of rolling rolls with a bearing box are extracted from a rolling mill, loaded on one of a plurality of loading sites provided in a belt-type transport device, and transported to a roll grinding device.
  • the pair of rolling rolls are ground by the roll grinding device to replace the rolling rolls.
  • FIG. 1 is a front view of a rolling facility showing one embodiment of the present invention.
  • Figure 2 shows the layout of the rolling equipment and roll shop.
  • FIG. 3 shows a roll grinding device with a cup-type rotary grinding wheel and an automatic roll show.
  • FIG. 4 is a view for explaining a mechanism for supporting the upper bearing box from the lower bearing box.
  • FIG. 5 is a diagram illustrating a method of transporting the roll from the roll exchanging trolley to the roll grinding device, and a transport method after the grinding.
  • FIG. 6 shows a side view of a roll grinding device having a force-up rotary grindstone.
  • FIG. 7 is a cross-sectional view of a roll grinding device C_C having a roll-up type rotary grindstone.
  • FIG. 8 is a cross-sectional view of a roll grinding apparatus AA having a roll-cup type rotary grindstone.
  • FIG. 9 shows a cross-sectional view of a roll grinding apparatus BB with a roll-up type rotary grindstone.
  • FIG. 10 shows a vertical sectional view of a grinding head.
  • FIG. 11 shows a cross section of the grinding head DD.
  • FIG. 12 shows a grinding head control system diagram
  • FIG. 13 shows a front view of the roll grinder.
  • FIG. 14 shows a cross-sectional view of the roll grinder E_E.
  • FIG. 15 shows a cross-sectional view of a cup-type rotary grindstone attached to a roll grinding head.
  • FIG. 16 is an explanatory view of a roll grinding device having a fixed rotating roller.
  • FIG. 1 is a front view of a rolling facility showing one embodiment of the present invention, and a rolling mill 3 for rolling a steel sheet is arranged in the rolling facility.
  • the rolling mill 3 includes a pair of upper and lower rolling rolls 3 1 a and a rolling roll 3 lb (this roll is generally called a work roll) for directly extending a steel sheet, and a pair of upper and lower reinforcing rolls 3 2 a for supporting a rolling load. , And reinforcing rolls 32b, each of which is provided vertically symmetrically around a steel plate (rolled material) to be rolled.
  • the upper roll is indicated by the suffix a
  • the lower roll is indicated by the suffix b.
  • Bearing boxes 34 are provided at both ends of each of the upper rolling roll 31a, the lower rolling roll 31b, the upper reinforcing roll 32a, and the lower reinforcing roll 32b. However, these bearing boxes 34 are supported by stands 35 that receive a rolling load.
  • the rolling rolls 31a and 31b are rotationally driven at a desired speed by a rotary driving device via a spindle 38.
  • the rolling rolls 3 1 a and 3 1 b move together with the bearing box 34 on rails 10 for changing the rolls provided in the rolling mill 3, and from the stands 35 of the rolling mill 3. , Roll incorporation and extraction.
  • a four-high rolling mill was shown, but the width of the steel sheet was reduced between the rolling roll 31a and the reinforcing roll 32a or between the rolling roll 31b and the reinforcing roll 32b.
  • a six-high rolling mill provided with an intermediate roll that can move in the roll axis direction according to the requirements may be used.
  • the steel sheet passes between the rolling roll 31a pressed by a strong rolling load and the rolling roll 31b, so that the wear of the rolling rolls 31a and 31b increases as the rolling amount increases. Evolve. Therefore, rolling rolls 3 1 a, It is necessary to replace 31b with new rolling rolls 31a and 31b.
  • a roll exchanging device 2 is arranged on the operation side of the rolling mill 3 adjacent to the rolling mill 3, and the used rolling roll 31 is exchanged for a new ground roll 31.
  • the spindle 38 side of the rolling mill 3 is called a drive side
  • the opposite side is called an operation side.
  • FIG. Figure 2 shows the layout of the rolling equipment and roll shop.
  • the used rolls 31a and 31b used for replacement are cooled by the roll cooling device 103 until the room temperature (20 to 40:) because the rolls are expanded by the rolling heat. .
  • the room temperature 20 to 40:
  • the rolling roll 31 is placed on a normal roll grinding machine 100 for blank grinding to perform grinding. With such a roll grinder 100, accurate grinding can be performed, but setup work such as centering requires labor and time. After the grinding roll 31 has been completed, the roll 31 is again mounted on the chick-removing device 102, and the rolling rolls 31 and 31b are assembled integrally with the bearing box 34, and then the roll replacement device 2 is mounted. After loading or temporarily storing at the roll shop, wait until the roll is replaced.
  • FIG. Fig. 3 shows a roll grinding device with a cup-type rotary grindstone and an automatic mouth shop layout.
  • the upper and lower two rolling rolls 3 1 a and 3 1 b extracted from the rolling mill 3 and the bearing box 34 are integrally loaded on the roll changing device 2. These are then loaded on a roll conveyor 4 which is a transport means.
  • the transfer from the roll changing device 2 to the roll conveyor 4 is performed by lifting and moving two rolling rolls 31 together with a crane 37 using a roll hanging beam 36.
  • the roll conveyor 4 is connected endlessly by a chain 42, and each saddle 41 connected by the chain 42 loads one set of rolling rolls 31a and 31b. . That is, in the present embodiment, a belt-type transport device including a plurality of saddles 41 for loading one set of the rolling rolls 31a and 31b is provided.
  • the rolling rolls 3 la and 31 b are stacked one upon another.
  • the lower bearing box 3 4 b has a rod 3 4 2 integrated with the wheel 3 1, and the rod 3 4 2 is vertically moved by a bush 3 4 3 attached to the lower bearing box 3 4. It is slidably supported in the direction.
  • the wheel 3 41 is mounted on the rail 10
  • the upper bearing box 34 a is lifted by the rod 34 2
  • the lower bearing box 34 is lowered, and the upper and lower rolling rolls 3 1 a
  • the rod 34 is lowered, and the upper and lower rolling rolls 31a and 31b come into contact with each other.
  • the rod 342 fits into the upper bearing box 34a so that no displacement occurs between the upper and lower bearing boxes 34a and 34b.
  • each saddle 4 1 is provided with a rail 46 corresponding to the width of the wheel 3 4 1 of the lower bearing box 3 4 b, and a vertical rolling roll 3 1 a, It is arranged so that 3 1 b can be loaded.
  • the upper and lower rolling rolls 31 a and 31 b loaded on the saddle 41 of the roll conveyor 4 are conveyed toward the roll grinding device 1 in the direction of the rolling line.
  • the rolling rolls 31a and 31b are cooled.
  • the cooling water is jetted onto the rolling rolls 31 by the roll cooling device 44 provided on the roll conveyor 4.
  • the rolling rolls 31a and 31b are cooled down to near normal temperature.
  • the cooled rolls 31a and 31b wait on the roll conveyor 4 until the previously loaded rolls 31a and 31b are completely ground by the roll grinding device 1. Since the belt-type transfer device is used, the rolls are cooled during this standby time, and cooling and grinding operations can be performed efficiently, and appropriate automation can be achieved.
  • the roll grinding device 1 is a roll grinder so that the upper and lower rolling rolls 31a and 31b can be inserted into the grinding section in a stacked state.
  • the inside of the device 1 is also provided with rails 101 adapted to the wheels 34 1 of the lower bearing box 34 b.
  • a roll insertion device 45 that can insert the rolling rolls 31a and 31b from the roll conveyor 4 into the roll grinding device 1 using a hydraulic cylinder or the like is provided on the side of the roll conveyor 4 opposite to the roll grinding device. ing. In this way, the upper and lower rolling rolls 31 a and 3 lb are ground by the roll grinding device 1.
  • the chain drive 43 feeds the saddle 41 of the roll conveyor 4 one pitch at a time.
  • the rolling roll 31 that has been completely ground by the roll grinding device 1 is again pulled out onto the roll conveyor 4 by the roll insertion device 45 and loaded.
  • Rolling rolls 3 la and 3 1 b are stored on a roll conveyor 4 while one pitch It is sent out side by side. In this way, a plurality of roll loading sections are provided in the belt-type transport means and transported sequentially, so that work can be performed efficiently and appropriate automation can be performed.
  • the ground rolls 31a and 31b are loaded on a roll conveyor 4a that moves in the opposite direction to the direction before grinding, and extend along the rail 10 of the roll changer 2 to be inserted.
  • the saddle 4 1 of the mouth conveyor 4 is moved, and the rolling rolls 3 1 a, 3 lb are run on the rails 46 again by using the buggy car 23, and wait on the roll changing device 2.
  • crane work can be eliminated, manual work can be reduced, and appropriate automation can be achieved.
  • the roll grinding device 1 is provided with two closed head housings, an operation side housing 11a and a driving side housing 11b, which hold the bearing box 34, integrated with the rolling roll 31. I have.
  • a Worm reducer is installed as an elevating device above the upper bearing box 34a.
  • a hydraulic cylinder is arranged as an elevating device that pushes up the lower rolling roll 31b in order to bring the upper and lower rolling rolls 3la, 31b into contact with each other. That is, a height adjusting device for holding or adjusting the rolling rolls horizontally is provided.
  • the upper Worm reducer and the lower hydraulic cylinder may be installed in reverse.
  • the upper rolling box 31a is pressed horizontally to move the upper rolling roll 31a to the left by S, and the upper pressing device 13a and the upper rolling roll 31a are moved.
  • An upper horizontal movement adjusting device 14a for controlling the moving amount is incorporated.
  • a lower pressing device that presses the lower bearing box 34b in the horizontal direction and a lowering device that adjusts the parallelism of the lower rolling roll 3 1b It has a horizontal movement adjustment device 14b.
  • an upper grinding head 5a for grinding the upper rolling roll 31a and a lower grinding head 5b for grinding the lower rolling roll 31b are arranged.
  • the upper and lower fixed bases 7a and 7b are attached so that the housings 11a and 11b are connected.
  • this fixed base 7 a, 7b has linear motion rails 8a and 5b with preload type rolling bearings so that the upper and lower grinding heads 5a and 5b can traverse smoothly during grinding.
  • the fixed bases 7a and 7b are connected to the upper and lower grinding heads 5a and 5b by 8b.
  • racks 9a and 9b are arranged on the fixed bases 7a and 7b, and run in the rolling roll axial direction by engaging with the pinions 55 8a and 55 8b attached to the grinding head 5.
  • a preload type ball screw may be attached to the fixed base 7 and the preload type ball screw may be driven to rotate by the AC servomotor all the time, and the grinding head 5 may be moved in the rolling roll axis direction.
  • a grinding head which is a grinding unit, will be described. The same structure as the upper grinding head 5a and the lower grinding head 5b is applied, so the upper grinding head 5a will be described using Figs. 10 and 11 as a representative. I do.
  • the grinding head 5a includes a grinding wheel rotating shaft 5 13 connected to a plane rotating grinding wheel 51 for grinding the rolling rolls 31a and 31b.
  • Rotary drive device 5 2 2 for rotating, pressing device 5 2 3 for pressing rotating wheel 5 1 against rolling roll 3 1, moving device 5 2 4 for moving rotating grinding wheel 5 1 in the axial direction of rolling roll 3 1
  • Rotary drive device 5 2 2 for rotating
  • pressing device 5 2 3 for pressing rotating wheel 5 1 against rolling roll 3
  • moving device 5 2 4 for moving rotating grinding wheel 5 1 in the axial direction of rolling roll 3 1
  • the rotary drive device 5 2 2 includes an electric motor 5 5 4 for rotating the rotary grindstone 51 to a predetermined grindstone peripheral speed, and an output shaft 5 5 of the electric motor 5 5 4. 4) It has a pre-shaft 5 5 4 b and a belt 5 5 5 for transmitting the rotation a to the grinding wheel rotation shaft 5 1 3, and the output shaft 5 5 4 d and the pre-shaft 5 5 4 b are parallel splines 5 They are linked via 5 4c.
  • the primary shaft 554 b is rotatably supported by the body 559.
  • the electric motor 554 is provided with an encoder 554a for detecting the rotation angle of the electric motor 554.
  • the grinding wheel rotating shaft 5 13 is connected via a slide type radial bearing 5 2 1 It is rotatably supported in the body 559 and receives a grinding reaction force by a thrust bearing 553 provided on the non-rotating grindstone 51 side.
  • a parallel spline may be provided between the grinding wheel rotating shaft 5 13 and the output shaft 5 54 a of the electric motor 5 54, and the grinding wheel rotating shaft 5 13 may be directly driven to rotate by the electric motor 5 54.
  • the body 559 is housed in a case 525, and the electric motor 554 is attached to the case 525. As shown in FIG. 19, the body 559 is mounted on the bottom of the case 52 so as to be movable in the axial direction of the grindstone rotating shaft 513 via a slide bearing 525a. .
  • the pressing device 5 23 rolls the body 55 9 by rolling the pressing motor 55 7 attached to the case 5 25 and the pressing motor 55 7 3
  • the backlashless type preload pole screw 5 5 6 that moves the grinding wheel 5 1 and the grinding wheel rotating shaft 5 1 3 back and forth together by moving the It has an encoder 557a for detecting the rotation angle.
  • a backlashless type gear mechanism may be used instead of the preload pole screw 556.
  • the moving device 5 2 4 is mounted on the traverse motor 558 attached to the case 5 25 and the rotating shaft of the traverse motor 558, and the racks 9 a and 9
  • the fixed base 7a is formed by a pinion 58a that fits and a linear rail 8a attached to the lower surface of the case 52. Due to the rotational force of the traverse motor 558, the case 525 can be moved on the linear rail 8a by engaging the pinion 58a with the rack 9a. It has an encoder 558 b for detecting the number of revolutions of the traverse motor 558 to detect the movement amount.
  • the preload ball screw is attached to the fixed base 7a, and the preload The grinding head 5 may be moved in the axial direction of the rolling mill by rotating the pole screw of the above by a AC servo motor for a moving device.
  • the electric motor 554 of the rotary drive device 522, the pressing motor 557 of the pressing device 523, and the traverse motor 558 of the moving device 524 are Are controlled by the control devices 56a, 56b, and 56c, respectively.
  • the detection signals of the electric motor 554-a encoder 554-a, the push-motor 55-7a encoder 55-7a, and the traverse motor 55-8 encoder 55-8b are detected by the information processing device 5 Sent to 6 d for processing.
  • the controller 56b detects the current flowing through the electric motor 554a in order to determine the rotational force (load) when the flat rotary grindstone 51 is rotated. It has a function to send to the information processing device 56d.
  • the information processing device 56 d has various processing functions, and sends the processed signal to the control devices 56 a, 56 b, 56 c, and the electric motor 55 4, the pressing motor 5 5 7 and traverse mode 5 5 8 are controlled.
  • the rotating grindstone 51 attached to the upper grinding head 5a is a cup-shaped base metal 511.
  • a superabrasive grain layer made of cubic boron nitride (CBN) and diamond is provided on the side surface. Is attached with an adhesive or the like.
  • This superabrasive layer 5 12 has much higher hardness than ordinary alumina oxide-based or silicon carbide-based grindstones, and less wear of the abrasive layer during grinding.
  • a disc-shaped ordinary grinding wheel 1001 having dimensions of about 100 cm in diameter and 10 cm in width is used. After grinding, the weight of this wheel becomes about 150 kg. Grinding wheel wear is severe, and the grinding ratio, which indicates the possible roll grinding volume per wheel volume, is about 1 to 5. Degrees. For this reason, frequent replacement of grinding wheels is required, and it takes time to replace heavy wheels in order to replace grinding wheels. Also, if a heavy grindstone has an unbalanced load, self-excited vibration is generated in the roll grinder 100 due to the unbalanced load, and accurate grinding cannot be performed. Must be done.
  • the abrasive layer 5 12 made of a superabrasive layer has a very thin thickness of 5 mm to 10 mm, and the diameter of the grindstone is as small as 250 mm to 350 mm.
  • the base metal 5 1 1 is also made of aluminum material, it is about 8 to 9 kg, which is very light compared to general whetstones. Most of the weight is occupied by the aluminum base metal 5 11, which is machined so that there is no unbalanced load. Therefore, there is no need to correct the unbalance load for the rotating grindstone 51 made of the superabrasive layer 5 12.
  • the general roll grinder 100 shown in Fig. 13 has a disk-shaped ordinary grindstone 100 0 1 rotating shaft B, rolling roll 3 1 shaft center C and grinding section A Placed on a line. If the distance between the disc-shaped ordinary grindstone 1001 and the rolling roll 3 1 changes slightly, the contact force of the grinding part A will change greatly, and the abrasive will cut into the roll surface, causing the abrasive to fall off. Scratch and chatter pattern are left on the roll surface. In order to prevent chattering phenomena during grinding, use a grindstone 1001 larger than the diameter of the rolling roll 31 and use a delicate distance between the disc-shaped ordinary grinding wheel 1001 and the rolling roll 31. Is trying to absorb the change with the elasticity of the disc-shaped ordinary whetstone 1001.
  • the grinding points of the grinding wheel axis 5 13 and the rotary grinding wheel 51 are arranged in a cantilever manner via the base metal 5 11. For this reason, even if a slight change in the distance between the grinding wheel axis and the rolling roll 31 occurs, it can be absorbed by the bending of the base metal 511 made of aluminum light metal of the rotating grinding wheel 51. However, if the base metal 511 bends easily, the rolling roll 31 cannot be ground to an accurate profile.
  • the rigidity of the base metal 511 is desirably increased, and in particular, desirably has a spring constant of 1000 kgZmni or more.
  • the thickness (t) and height (h) dimensions of the cup-shaped base 511 of the rotating grindstone 51 shown in Fig. 15 are appropriate. Need to be changed to
  • the grindstone rotating shaft 5 1 3 axis core G c is set to the rolling roll 3 1 axis R c It is arranged at a small angle ⁇ degrees (about 0.2 to 0.6 degrees) with respect to the perpendicular Ra.
  • a distance meter 16 for measuring the diameter of the rolling roll 31 and the profile of the rolling roll 31 is arranged near the rotating grindstone 51. Then, as shown in FIG. 9, the rolling roll 31 is provided with a portion having a reference diameter which does not need to be ground at two places at the end. This is referred to as a reference part 311.
  • This reference part 311 is finished with high precision and has accurate diameter data. For the reference part 311, take measures such as fitting a ring with a plating or a ring made of SUS metal so that cracks or the like do not occur when rolling is used.
  • This reference part 3 1 1 and distance The diameter and profile of the roll 31 after grinding are calculated using the total 16.
  • a vertical distance meter 17 is provided on the operation side and the driving side housings 11a and 11b above the reference portion of the rolling roll 31.
  • Grinding head 5 equipped with rigid rotating grindstone 5 1 Rolling wheel 3 of thin disk 6 on opposite side of rolling roll 3 1 6 1 Rotating grindstone with superabrasive layer 6 1 2 attached on one side 6 Place grinding head 6 with 1 attached.
  • the details of the grinding mechanism and the grinding method are described in Japanese Patent Application Laid-Open No. H10-249416, and are therefore omitted.
  • the grinding head 6 further improves the surface roughness of the rolling roll 31. Particularly in the case of hot rolling equipment, finish grinding is performed because the rolling rule 31 used in the subsequent rolling mill may be transferred to the rolled material. In this finishing grinding, the pressing force is kept constant, and the fine depth is ground to achieve the desired roll surface properties and roughness.
  • one grinding head 5 performs grinding once from the operation side end of the rolling roll 31 to the opposite side of the drive side. Since the number of times of grinding is small, it is desirable to share the same for the upper and lower rolling rolls 31a and 31b.
  • a frame 61 for fixing a linear motion rail 6 8 made of a rolling bearing that can slide the grinding head 6 slidably in one axis direction is arranged, and a non-rolling roll for the frame 6 1 3 Provide a rotating fulcrum 61a on the 1 side.
  • the frame 61 is rotated with the push-pull jack 15 around the rotation fulcrum 61a, so that the centers of the upper and lower rolling rollers 31a and 31b are on the extension of the grinding wheel axis.
  • the stroke of the push-pull jack 15 can be controlled.
  • the upper and lower rolling rolls 31a and 3lb are pressed by a thrust plate 18 attached to the housing in the same manner as the rolling mill 3, in order to restrain the movement in the roll axis direction during grinding.
  • a thruster addition device 19 is attached to the housing 11b on the drive side, and the rolling roll 31 is always pressed against the operation side during grinding. Make structure.
  • a roll driving device 20 for rotating the rolling rolls 3 la and 31 b to a speed suitable for grinding.
  • the roll driving device 20 has a speed reducer and a motor whose rotation speed can be controlled in order to control the rotation speed of the rolling roll 31.
  • the stroke of the worm reducer 13 is adjusted based on the inserted roll information of the roll 31 so that the position where the upper and lower rolls 31a and 31b contact in the outer circumferential direction is at a fixed position.
  • the lower bearing box 34b and the lower rolling roll 3 1b are lifted by the hydraulic cylinder 1-14 located below the lower bearing box 34b, and are held in the lower bearing box 34b.
  • the mouth pad 342 is lowered, and the upper and lower rolling rolls 3 la and 3 1 b contact in the outer peripheral direction.
  • each bearing housing is provided with a roll height position adjusting device as a lifting / lowering device, the upper and lower rolling rolls 3 la and 31 b can be contacted and separated.
  • the upper and lower rolling rolls 31a and 31b are brought into contact with each other, and one of the rolling rolls can be driven to rotate and the other rolling roll can be rotated, so that the two rolling rolls can be rotated with a simple structure. .
  • the upper bearing receiving box 34a is pressed horizontally by the upper pressing device 13a, and the center of the upper rolling roll 31a is moved by S, and is brought into contact with the upper leveling device 14a.
  • the reference part 311 provided at the end of the upper rolling roll 31a was measured with two vertical distance meters 17 attached to the housings 11a and 11b, and the operation side and the drive side were measured. If the height of the reference portion 311 is different, finely adjust at least one of the Worm reducers 13 and adjust and arrange the upper rolling roll 31a horizontally.
  • the upper and lower bearing boxes 34a and 34b are attached to the thrust plate attached to the operation side housing 11a. 1 Secure with 8. Furthermore, the rolling roll 31 can be pressed in the axial direction by the thruster adding device 19 attached to the driving side housing 11b to remove the play in the thrust direction.
  • the reference unit 311 provided at the ends of the upper and lower rolling rolls 3 l and 31 b is measured by a distance meter 16 provided near the rotary grindstone attached to the grinding head 5. If the distance between the reference part 3 1 1 on the operation side and the drive side was different, at least one of the upper and lower horizontal adjustment devices 14 was adjusted, and the axis of the rolling roll 3 1 and the grinding head 5 were attached.
  • the parallelism of the fixed bases 7a and 7b with the linear motion rails 8a and 8b can be centered with high precision. As described above, the simple structure can remove the gas and perform the grinding with high accuracy.
  • the upper and lower rolling rolls 31a and 31b are rotated by a roll driving device 20 so as to have a predetermined speed.
  • the rotating grindstone 51 is rotated to a predetermined speed by the electric motor 554a, pressed against the rolling roll 31 and grinding is started.
  • the rotary grindstone 51 recognizes the pressing position at which the grinding has started, and pushes the grinding amount of a required depth from the position according to the instruction of the information processing device 5113d. That is, the position of the feeder is controlled.
  • the motor -558 of the traversing device 5 14 is rotated, and the grinding is performed while traversing the grinding head 5 at a constant speed.
  • the detection signals from the encoder 55 7a attached to the pressing motor 55 7 for the pressing device 5 23 and the encoder 55 8a attached to the traverse motor 55 8 To be processed.
  • control device 56b detects the current flowing through the electric motor 554a in order to determine the rotational force (load) when rotating the rotary grindstone 51, and processes the detected signal as information. It has the function of sending to the device 56d.
  • the information processing device 56 d has various processing functions, and adjusts the rotation angle of the pressing motor 55 7 and the traverse motor 55 8 so that the rolling roll 31 has a desired roll profile. Control. If the current flowing through the electric motor requires a grinding force that exceeds the allowable value, Change the moist position.
  • finish grinding is performed with a grinding head 6 having a rotating grindstone 61 having a superabrasive layer 6 12 adhered to the side surface of a base metal 6 1 1 having a thin flat disk.
  • Thin plate The flat disk-shaped rotary grindstone 6 1 uses a base metal 6 1 1 with a soft elastic body, so there is little change in contact force between the rolling roll 3 1 and the rotary grindstone 6 1 during grinding, so it is more beautiful Grinding can be performed on the rolling roll 31 having a surface property.
  • the contact force between the rolling roll 31 and the rotating grindstone 51 is controlled from one end of the rolling roll 31 to the other end so that a constant pressing force is obtained, and grinding is performed. Do. By this grinding, the entire surface of the roll 31 can be finished into the roll 31 having the same properties.
  • the step between the reference portion 311 provided at the end of the rolling roll 31 and the roll surface is measured with a distance meter 16 to calculate the diameter of the rolling roll 31. It is confirmed that the rolling roll 31 has a desired roll diameter and is not ground to a taper. All the measured data are transmitted to the information processing device 5113d, and are stored in the higher-level control arithmetic device.
  • the rolling roll 31 moves the upper rolling roll 31a horizontally and puts it on the lower rolling roll 31b.
  • the hydraulic cylinder 14 is lowered, and the upper and lower rolling rolls 3 la and 3 1 b are moved together from the roll grinding device 1 onto the roll conveyor 4.
  • the rolling roll 31 is stored and waited on the roll conveyor 4 until it is transported to the roll changing device 2.
  • the rolled rolling roll 3 1 is transferred to the roll conveyor 4. After being loaded on the chiller, it is cooled, ground, and stored without any handling by the operator until the next use is determined by rolling. It is now possible to replace a roll shop, which was more difficult to automate than a rolling facility and required labor for workers, with an unmanned factory.
  • the upper and lower rolling rolls 3 la and 3 lb are brought into contact with each other at the time of grinding so as to eliminate the radial gap of the bearing 3 4 1 incorporated in the bearing box 34.
  • the upper bearing box 34a may be independently provided with wheels without loading the upper bearing box 34a via the rod 342 on the lower bearing box 34b. This case will be described below with reference to FIG.
  • the major difference between the roll grinding device 1 shown in Fig. 16 and that shown in Fig. 8 is that the upper and lower bearing boxes 34a and 34b each have wheels 341. .
  • the upper bearing box 3 4a runs on the rail 101a and is inserted into the roll grinding device 1
  • the lower bearing box 34b runs on the rail 101b and inside the roll grinding device 1. Is inserted into.
  • a fixed rotary roller 21 is mounted between the upper and lower rolling rolls 31a and 3lb.
  • the rotating roller 21 is fixed to the housing 11 via a bearing box 22. Further, the rotating roller 21 has a structure that can be rotationally driven by a roll driving device 20.
  • the upper and lower rolling rolls 31a and 31b inserted into the roll grinding device 1 have their upper rails 101a lowered, and the upper rolling roll 31a comes into contact with the rotating roller 21. Further, press with the upper hydraulic cylinder 14a. The lower rolling roll 3 1 b is pushed up by the lower hydraulic cylinder 14 b and comes into contact with the rotating roller 21. Upper and lower rolling rolls 3 1 a and 3 1 b come into contact with rotating roller 2 1 As a result, the roll center is offset horizontally by S. As a result, a horizontal pressing force is generated in the bearing housing 34. Therefore, the radial gap between the bearings 341 can be eliminated.
  • the rotating roller 21 is rotated by the roll driving device 20, and the upper and lower rolling rolls 31 a and 31 b that are in contact with the rotating roller 21 are also driven to rotate and become ready for grinding. Grinding is the same as the equipment in Fig. 8.
  • the roll cooling, grinding, and storage are all performed automatically without the intervention of an operator simply by placing the used roll of the rolling mill on the conveyor provided in the roll shop. Can be done with Furthermore, since the rolling roll and the bearing box can be ground together, there is no need to disassemble or reassemble the bearing box from the rolling roll. For this reason, the number of workers required for roll milling can be significantly reduced.
  • the roll grinding apparatus of this embodiment uses superabrasive grains as a grindstone, the life of the grindstone is 100 times or more longer than that of a general grindstone, and the purchase cost of the grindstone is reduced at the total price.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Abstract

La présente invention concerne une meuleuse de cylindre caractérisée en ce qu'elle comprend un carter, deux cylindres roulants pourvus chacun d'un boîtier de roulement dans le carter, un entraîneur menant rotatif l'un des cylindres roulants, un réglage de position en hauteur du cylindre servant à mettre le cylindre roulant considéré avec en contact l'autre cylindre roulant ou à écarter le cylindre roulant de l'autre cylindre roulant, et enfin une meuleuse servant à meuler chacun de ces cylindres roulants tout en faisant rouler l'autre cylindre roulant de façon à être mené rotatif par la rotation de l'autre cylindre tournant, ce qui fait que les cylindres roulants peuvent être correctement automatisés dans un atelier des cylindres.
PCT/JP2000/000039 2000-01-07 2000-01-07 Procedes et dispositifs de meulage et d'echange de cylindres WO2001049427A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU18917/00A AU1891700A (en) 2000-01-07 2000-01-07 Roll grinding equipment, roll grinding method, roll change equipment, and roll change method
PCT/JP2000/000039 WO2001049427A1 (fr) 2000-01-07 2000-01-07 Procedes et dispositifs de meulage et d'echange de cylindres

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2000/000039 WO2001049427A1 (fr) 2000-01-07 2000-01-07 Procedes et dispositifs de meulage et d'echange de cylindres

Publications (1)

Publication Number Publication Date
WO2001049427A1 true WO2001049427A1 (fr) 2001-07-12

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PCT/JP2000/000039 WO2001049427A1 (fr) 2000-01-07 2000-01-07 Procedes et dispositifs de meulage et d'echange de cylindres

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Country Link
AU (1) AU1891700A (fr)
WO (1) WO2001049427A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103028607A (zh) * 2011-09-30 2013-04-10 鞍钢股份有限公司 一种上工作辊断辊取出方法及断辊取出架
CN107511399A (zh) * 2016-06-16 2017-12-26 中冶宝钢技术服务有限公司 一种轧机机架辊更换用辅助工装及更换方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1560154A (en) * 1976-05-21 1980-01-30 Hoesch Werke Ag Apparatus for conveying and manipulating rolls
JPS59169609A (ja) * 1983-03-15 1984-09-25 Ishikawajima Harima Heavy Ind Co Ltd 圧延ロ−ルの研削方法
JPS6384705A (ja) * 1986-09-29 1988-04-15 Nkk Corp ロ−ルシヨツプ
JPH06335715A (ja) * 1993-05-27 1994-12-06 Hitachi Ltd オンラインロール研削装置を備えた圧延機
JPH081213A (ja) * 1994-06-14 1996-01-09 Nisshin Steel Co Ltd タンデム式冷間圧延設備のロールおよびチョックの自動交換整備方法および装置
JPH10249416A (ja) * 1997-03-07 1998-09-22 Hitachi Ltd 圧延ロール研削方法及びシステム

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1560154A (en) * 1976-05-21 1980-01-30 Hoesch Werke Ag Apparatus for conveying and manipulating rolls
JPS59169609A (ja) * 1983-03-15 1984-09-25 Ishikawajima Harima Heavy Ind Co Ltd 圧延ロ−ルの研削方法
JPS6384705A (ja) * 1986-09-29 1988-04-15 Nkk Corp ロ−ルシヨツプ
JPH06335715A (ja) * 1993-05-27 1994-12-06 Hitachi Ltd オンラインロール研削装置を備えた圧延機
JPH081213A (ja) * 1994-06-14 1996-01-09 Nisshin Steel Co Ltd タンデム式冷間圧延設備のロールおよびチョックの自動交換整備方法および装置
JPH10249416A (ja) * 1997-03-07 1998-09-22 Hitachi Ltd 圧延ロール研削方法及びシステム

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103028607A (zh) * 2011-09-30 2013-04-10 鞍钢股份有限公司 一种上工作辊断辊取出方法及断辊取出架
CN103028607B (zh) * 2011-09-30 2014-12-03 鞍钢股份有限公司 一种上工作辊断辊取出方法及断辊取出架
CN107511399A (zh) * 2016-06-16 2017-12-26 中冶宝钢技术服务有限公司 一种轧机机架辊更换用辅助工装及更换方法

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