WO1988001544A1 - Drive for continuous rolling train - Google Patents
Drive for continuous rolling train Download PDFInfo
- Publication number
- WO1988001544A1 WO1988001544A1 PCT/DE1987/000394 DE8700394W WO8801544A1 WO 1988001544 A1 WO1988001544 A1 WO 1988001544A1 DE 8700394 W DE8700394 W DE 8700394W WO 8801544 A1 WO8801544 A1 WO 8801544A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drive
- stands
- continuous rolling
- stand
- roll
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/72—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
- B21B35/02—Drives for metal-rolling mills, e.g. hydraulic drives for continuously-operating mills
- B21B35/025—Drives for metal-rolling mills, e.g. hydraulic drives for continuously-operating mills for stretch-reducing of tubes
Definitions
- the invention relates to the drive for continuous rolling mills.
- the roll speeds required for transport and forming accordingly increase from a roll stand to the stand next arranged in the rolling direction.
- roller speeds are dependent on the forming process, i. that is, it must generally be changed individually in each roll stand if the forming conditions, especially the axial changes in shape, e.g. B. vary to produce different finished product dimensions.
- roller mill drive systems for generating variable speed ratios can basically be differentiated according to the following technical concepts: Single drive by one motor for each roll stand,
- Group drive of several scaffolds via a common drive shaft a variation of the speed ratios being achieved by superimposing a second rotary movement on the common drive rotary motion, which is either transmitted via a common drive shaft or generated by separate drive motors for each scaffold station.
- Characteristic of the first drive concept is the greatest possible flexibility with regard to the speed setting, but also a high outlay on the electromotive drive power to be installed. In contrast, this is particularly low for group drives if the drive force is only transmitted via common shafts and rows of gearwheels, because according to this concept the installed motor power is also available for forming if, depending on the number of stands, the are required for a specific rolling of a production program, is not formed on all the rolling stands belonging to the driven stand group.
- the speed range of the drive motors required for all the rolling of a production program can be kept comparatively small if appropriate gear ratios from stand to stand are provided.
- each motor In contrast, in the case of individual drives, each motor must correspond to the extreme values of the U ⁇ fo ⁇ n sizes, such as, B. torque, power and speed.
- motors at scaffold stations which may not be involved in the forming of certain rolls, can also not contribute to the drive power required for this forming.
- the group drive with common drive shafts which is associated with comparatively little electrical effort, has little flexibility in the setting of the speeds or the speed assignments in the roll stands. Since the roller speeds cannot be changed individually in such a drive system, but always only in all stands of a stand group according to predetermined gear ratios, an optimal speed setting for any rolling cannot be achieved; d. H. the forming process cannot be optimally designed except for a maximum of two rolls.
- a compromise solution between individual drive and group drive with common drive shafts for the drive parts to be superimposed is a group drive in which a common drive shaft for each scaffold is overlaid separately by an additional drive.
- this solution does not lead to a significant reduction in the effort required for the electric motor.
- the invention is based on the object of improving the drive of continuous rolling mills in such a way that individual controllability of the roller speeds in the individual stands is ensured with little expenditure on the electromotive power and drive technology to be installed.
- a total gear stage is assigned to several roll stands or roll stand groups, the input of which is fed by individually controllable drives and the output of which is mechanically connected to the respectively assigned roll stand and at the same time to the input of a total gear of an adjacent roll stand.
- the motor driving at a specific scaffolding location contributes to a change in the speed of rotation on this scaffolding and other rolling stands following in the power transmission direction.
- REPLACEMENT BL are not involved in the forming.
- negative torques and powers in the roll stands at least not necessarily also lead to generator operation of individual motors.
- the electromotive effort required for a specific rolling program can also be minimized again by a suitable choice of the ratios from stand to stand.
- the principle of the drive according to the invention can be seen from the schematic illustration, which shows a possible embodiment of this drive concept.
- two drive points are combined at each of the stand locations shown by means of differential gear stage 1 and fed to the respective rolling stand 2 and, via distributor and transmission gear elements 3, to the summation gear which is provided on the stand location following in the rolling direction.
- An additional drive movement, generated by a drive motor 4, is in turn superimposed on this.
- This drive scheme can be used in any number of scaffolding locations in the same catfish.
- the system can be driven by a motor 6 via a drive shaft 5.
- the motor 6 can be a non-adjustable three-phase motor.
- the other motors can be designed as small auxiliary motors.
- the speed must be adjustable and the direction of rotation can also be changed.
- the required drive power of the secondary motors can be minimized by a suitable choice of the base speed ratios and even compensated for in their size depending on the scaffolding space.
- the drive system according to the invention can of course also be used in groups or in combination with other drive systems within a rolling mill.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Multiple Motors (AREA)
- Transmission Devices (AREA)
- Metal Rolling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19863629895 DE3629895A1 (en) | 1986-08-29 | 1986-08-29 | DRIVE FOR CONTINUOUS ROLLING MILLS |
DEP3629895.6 | 1986-08-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1988001544A1 true WO1988001544A1 (en) | 1988-03-10 |
Family
ID=6308777
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1987/000394 WO1988001544A1 (en) | 1986-08-29 | 1987-08-29 | Drive for continuous rolling train |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0321482A1 (en) |
CN (1) | CN1030034A (en) |
DE (1) | DE3629895A1 (en) |
WO (1) | WO1988001544A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0420294A2 (en) * | 1989-11-17 | 1991-04-03 | INNSE INNOCENTI ENGINEERING S.p.A. | Stretch-reducing mill for rolling tubes |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1002719B (en) * | 1954-12-20 | 1957-02-21 | Kocks Gmbh Friedrich | Device for maintaining a certain speed difference between a stand and the preceding neighboring stand in continuously operating, multi-stand roll lines, in particular in tube reducing mills |
DE1054408B (en) * | 1955-05-05 | 1959-04-09 | Kocks Gmbh Friedrich | Stretch-reducing mill |
DE1293110B (en) * | 1963-07-04 | 1969-04-24 | Schloemann Ag | Group drive for a continuous stretch-reducing mill |
DE1805661A1 (en) * | 1968-10-28 | 1970-05-27 | Elektrostalskij Zd Tjazelogo M | Group drive for continuous rolling mill |
DE1652547A1 (en) * | 1968-02-08 | 1971-04-15 | Kocks Gmbh Friedrich | Recalibrating mill for treating one from the last stand of a cold or hot rolling mill or from a finishing device or the like. coming rolling stock |
SU495106A1 (en) * | 1966-02-05 | 1975-12-15 | Всесоюзный научно-исследовательский и проектно-конструкторский институт металлургического машиностроения | Reduction mill for rolled pipes |
US4000637A (en) * | 1975-04-21 | 1977-01-04 | Firma Friedrich Kocks | Rolling mills |
DE8514737U1 (en) * | 1985-05-18 | 1985-10-31 | Kocks Technik Gmbh & Co, 4010 Hilden | Rolling mill for reducing the stretching of tubes |
-
1986
- 1986-08-29 DE DE19863629895 patent/DE3629895A1/en not_active Ceased
-
1987
- 1987-08-29 EP EP19870905595 patent/EP0321482A1/en not_active Ceased
- 1987-08-29 WO PCT/DE1987/000394 patent/WO1988001544A1/en not_active Application Discontinuation
- 1987-08-29 CN CN 87106005 patent/CN1030034A/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1002719B (en) * | 1954-12-20 | 1957-02-21 | Kocks Gmbh Friedrich | Device for maintaining a certain speed difference between a stand and the preceding neighboring stand in continuously operating, multi-stand roll lines, in particular in tube reducing mills |
DE1054408B (en) * | 1955-05-05 | 1959-04-09 | Kocks Gmbh Friedrich | Stretch-reducing mill |
DE1293110B (en) * | 1963-07-04 | 1969-04-24 | Schloemann Ag | Group drive for a continuous stretch-reducing mill |
SU495106A1 (en) * | 1966-02-05 | 1975-12-15 | Всесоюзный научно-исследовательский и проектно-конструкторский институт металлургического машиностроения | Reduction mill for rolled pipes |
DE1652547A1 (en) * | 1968-02-08 | 1971-04-15 | Kocks Gmbh Friedrich | Recalibrating mill for treating one from the last stand of a cold or hot rolling mill or from a finishing device or the like. coming rolling stock |
DE1805661A1 (en) * | 1968-10-28 | 1970-05-27 | Elektrostalskij Zd Tjazelogo M | Group drive for continuous rolling mill |
US4000637A (en) * | 1975-04-21 | 1977-01-04 | Firma Friedrich Kocks | Rolling mills |
DE8514737U1 (en) * | 1985-05-18 | 1985-10-31 | Kocks Technik Gmbh & Co, 4010 Hilden | Rolling mill for reducing the stretching of tubes |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0420294A2 (en) * | 1989-11-17 | 1991-04-03 | INNSE INNOCENTI ENGINEERING S.p.A. | Stretch-reducing mill for rolling tubes |
EP0420294A3 (en) * | 1989-11-17 | 1991-04-10 | INNSE INNOCENTI ENGINEERING S.p.A. | Stretch-reducing mill for rolling tubes |
Also Published As
Publication number | Publication date |
---|---|
DE3629895A1 (en) | 1988-07-14 |
EP0321482A1 (en) | 1989-06-28 |
CN1030034A (en) | 1989-01-04 |
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