US3540251A - Cross-roll straightener drive assembly - Google Patents
Cross-roll straightener drive assembly Download PDFInfo
- Publication number
- US3540251A US3540251A US737010A US3540251DA US3540251A US 3540251 A US3540251 A US 3540251A US 737010 A US737010 A US 737010A US 3540251D A US3540251D A US 3540251DA US 3540251 A US3540251 A US 3540251A
- Authority
- US
- United States
- Prior art keywords
- rolls
- machine
- roll
- spindles
- cross
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
- B21D3/04—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers arranged on axes skew to the path of the work
Definitions
- a cross-roll straightener drive assembly comprising a plurality of pairs of cross-rolls arranged longitudinally along an axis of the assembly, each of the pairs of rolls comprising an upper roll and a lower roll.
- the upper and lower rolls are spaced from each other and are differently angled with respect to the assembly axis. Individual spindles for the rolls extend towards one side of the assembly, each spindle being connected to a speed reducer. Individual drive motors are connected to the speed reducers, mounted on the reducers and positioned so that one motor does not interfere with another motor.
- the present invention relates to a drive assembly for a cross-roll straightener machine.
- a cross-roll straightener for instance a straightener having six rolls, wherein a plurality of pairs of rolls are aligned along the machine axis with the upper rolls of each pair being oriented at one angle with respect to the axis, the lower rolls being oriented at a different angle with respect to the axis.
- the three upper rolls would be oriented in one direction, making a sharp angle facing the leading or front end of the machine.
- the bottom or lower three rolls would be oriented at a sharp angle facing in the opposite direction.
- a disadvantage experienced with this type of drive assembly is that the speeds of rolls of the machine are not individually variable. If a roll becomes slightly worn, its surface speed changes and diifers from the surface speed of the other rolls of the machine. In the absence of an ability to change the rotational speed of a roll, the slightly worn roll tends to scuif against the object being rolled, accelerating wear on the roll.
- a cross-roll straightener machine comprising a machine axis.
- a plurality of pairs of cross-rolls are arranged longitudinally along said axis, each of said pairs comprising upper and lower rolls.
- the upper rolls are spaced from the lower rolls, and are disposed at a rst angle with respect to the machine axis, the lower rolls being disposed at a different angle with respect to said axis.
- Individual spindles for the rolls extend towards one side of the machine, with speed reducers connected to the spindles.
- Individual drive motors are connected to the speed reducers, the drive motors being mounted on the speed reducers and positioned at an angle thereto whereby one motor does not interfere with another motor.
- the machine axis is horizontally disposed, and the spindles extend horizontally towards one side of the machine.
- the motors are then vertically mounted on the speed reducer housings.
- FIG. 1 is a plan partial section view of a cross-roll straightener machine in accordance with the invention.
- FIG. 2 is an elevation of the cross-roll straightener of FIG. 1.
- a crossroll straightener 12 having a longitudinal axis along which a pipe 14 or other object is threaded.
- the pipe is engaged by pairs of rolls 16, 18 and 20, each roll having a concave surface to conform to the surface of the pipe.
- the upper rolls are angled at a rst acute angle X with realtion to the machine axis, facing forwardly or towards the front or entry end 22 of the machine opposite to the direction of movement of the pipe 14, and the lower rolls are angled at a second acute angle Y with respect to the machine axis facing the rear or delivery end 24 of the machine towards the direction of movement of the pipe.
- the rolls are individually driven, in a manner to be discussed, and the rotating concave surfaces of the rolls, angled with respect to the direction of travel of the pipe 14, cause the pipe not only to move in a longitudinal direction, but to rotate at the same time.
- This longitudinal and rotational movement while the rolls hold the pipe co-axially with the machine axis, straightens the pipe by rotating it forwardly through a bending arc for-med by upward displacement of the center roll pair 18 with the entering and delivering roll pairs 16 and 20.
- the upper rolls of each pair areV arranged in a horizontal plane, and the lower rolls are arranged in a plane which is parallel to the upper plane and also horizontal.
- the spacing between the rolls is 'sufficient to accommodate the pipe diameter, for frictional engagement between the pipe and the roll surfaces.
- each roll There is provided for each roll a horizontal spindle 26 aligned with each roll axis, all of the spindles extending towards one side 28 of the machine. Viewing the machine towards its front tube entry end, the spindles extend towards the right side of the machine.
- the drive assemblies generally indicated by the numeral 30 are thereby all disposed on one side of the machine.
- Couplings 32, 34 are provided for each spindle connecting the spindles to the drive assemblies 30, and to the rolls.
- Each drive assembly comprises a speed reducer 36 on top of which is seated or mounted a motor 38.
- the speed reducers are of the worm and worm wheel type, with the worms extending vertically upwardly from the speed reducer housings coupled to the motors. This translates the rotational movement of the vertically oriented kaxes of the motors into the horizontal rotational motion of the spindles.
- FIG. 1 illustrates the advantages of the invention.
- the motors were horizontally oriented, and at right angles to the axes of the spindles, the reducers being right angle reducers.
- the disadvantage with this type of arrangement was that the motors, if large in size, would interfere, requiring that the drive assemblies for the rolls closer to the ends of the machine be spaced progressively further from the axis of the machine. If it was desired to use spindles of equal length, then the motors had to be axially aligned with the spindles, and, depending upon the sizes of the motors, the spindles would have to be placed a greater distance apart. As can be seen from FIG.
- the spindles 26 are all of equal length, so that in purchasing the spindles, there is a savings in cost.
- the spindles are relatively short, with the motor and speed reducer assemblies mounted close to the rolls, for high eiciency of transfer of torque from the motors to the rolls.
- the lioor space occupied by the entire machine, including the individual drive assemblies is reduced. This constitutes a definite saving to the user of the cross-roll straightener machine.
- the present invention offers the advantage of individual drive assemblies for each roll, so that individual roll speeds can be varied, with less limitation on the horsepower of motors used, or motor sizes, with a predetermined desired spacing between pairs of rolls.
- a further advantage achieved in accordance with the invention is the saving resulting from having the motors mounted directly on the speed reducer housings. This eliminates the cost of couplings and special mountings for the motors heretofore required when the motors were separately mounted on the framework for the cross-roll straightener.
- a cross-roll straightener machine comprising a machine axis
- a cross-roll straightener machine comprising a leading end and a trailing end
- said upper rolls being arranged in a horizontal plane which is spaced a predetermined distance from and parallel to the horizontal plane defined by the lower rolls;
- said upper rolls all being disposed at a first acute angle facing the leading end of said machine and the lower rolls all being disposed at a different acute angle ywith respect to the machine axis facing the trailing end of said machine;
- a cross-roll straightener machine wherein there are provided three pairs of rolls, the spindles and drive assemblies being disposed along one side of said straightener machine in groups of three.
- a crosseroll straightener machine comprising a machine axis
- a stand of rolls including upper and lower rolls arranged longitudinally along said axis, the upper rolls being differently angled with respect to the machine axis than the lower rolls;
- At least three rolls being angled in approximately the same direction with respect to the machine axis on closely spaced axes, the spindles of said three rolls being parallel and closely spaced;
- said drive motors being mounted on said speed reducers and positioned at an angle thereto whereby one motor does not interfere with another motor.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Description
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US73701068A | 1968-06-14 | 1968-06-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3540251A true US3540251A (en) | 1970-11-17 |
Family
ID=24962243
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US737010A Expired - Lifetime US3540251A (en) | 1968-06-14 | 1968-06-14 | Cross-roll straightener drive assembly |
Country Status (3)
Country | Link |
---|---|
US (1) | US3540251A (en) |
DE (1) | DE1920855A1 (en) |
GB (1) | GB1213750A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0051950A2 (en) * | 1980-11-11 | 1982-05-19 | Openglead Limited | Mobile machine for straightening tubes |
US4471639A (en) * | 1982-11-01 | 1984-09-18 | E. W. Bliss Company, Inc. | Roll orientation control system for straightening machines |
US4711112A (en) * | 1981-07-06 | 1987-12-08 | Nilsson Einar W | Straightening machines and methods |
CN102527780A (en) * | 2012-03-05 | 2012-07-04 | 常熟市非凡金属制品有限公司 | Quenching and straightening integrated machine for steel billets |
CN102601175A (en) * | 2012-03-05 | 2012-07-25 | 常熟市非凡金属制品有限公司 | Bar quenching straightener |
RU2506133C1 (en) * | 2012-12-03 | 2014-02-10 | Открытое акционерное общество Акционерная холдинговая компания "Всероссийский научно-исследовательский и проектно-конструкторский институт металлургического машиностроения имени академика Целикова" (ОАО АХК "ВНИИМЕТМАШ") | Tube-straightening machine roller chase |
RU174992U1 (en) * | 2017-02-20 | 2017-11-15 | Акционерное общество "Трубодеталь" (АО "Трубодеталь") | Device for editing the ovality of pipes and bends |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2319785A (en) * | 1940-08-04 | 1943-05-25 | Abramsen Gudrun | Cross roll apparatus |
US3187536A (en) * | 1961-11-20 | 1965-06-08 | Pritchett Engineering & Machin | Rotary straightener |
-
1968
- 1968-06-14 US US737010A patent/US3540251A/en not_active Expired - Lifetime
-
1969
- 1969-04-24 DE DE19691920855 patent/DE1920855A1/en active Pending
- 1969-05-06 GB GB23095/69A patent/GB1213750A/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2319785A (en) * | 1940-08-04 | 1943-05-25 | Abramsen Gudrun | Cross roll apparatus |
US3187536A (en) * | 1961-11-20 | 1965-06-08 | Pritchett Engineering & Machin | Rotary straightener |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0051950A2 (en) * | 1980-11-11 | 1982-05-19 | Openglead Limited | Mobile machine for straightening tubes |
EP0051950A3 (en) * | 1980-11-11 | 1982-06-16 | Openglead Limited | Mobile machine for straightening tubes |
US4711112A (en) * | 1981-07-06 | 1987-12-08 | Nilsson Einar W | Straightening machines and methods |
US4471639A (en) * | 1982-11-01 | 1984-09-18 | E. W. Bliss Company, Inc. | Roll orientation control system for straightening machines |
CN102527780A (en) * | 2012-03-05 | 2012-07-04 | 常熟市非凡金属制品有限公司 | Quenching and straightening integrated machine for steel billets |
CN102601175A (en) * | 2012-03-05 | 2012-07-25 | 常熟市非凡金属制品有限公司 | Bar quenching straightener |
RU2506133C1 (en) * | 2012-12-03 | 2014-02-10 | Открытое акционерное общество Акционерная холдинговая компания "Всероссийский научно-исследовательский и проектно-конструкторский институт металлургического машиностроения имени академика Целикова" (ОАО АХК "ВНИИМЕТМАШ") | Tube-straightening machine roller chase |
RU174992U1 (en) * | 2017-02-20 | 2017-11-15 | Акционерное общество "Трубодеталь" (АО "Трубодеталь") | Device for editing the ovality of pipes and bends |
Also Published As
Publication number | Publication date |
---|---|
GB1213750A (en) | 1970-11-25 |
DE1920855A1 (en) | 1970-02-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: E.W. BLISS COMPANY, INC.,, DELAWARE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GULF & WESTERN INDUSTRIAL PRODUCTS COMPANY A CORP OF DE;REEL/FRAME:004204/0264 Effective date: 19831110 Owner name: E.W. BLISS COMPANY, INC., DE. A CORP OF DE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:GULF & WESTERN INDUSTRIAL PRODUCTS COMPANY A CORP OF DE;REEL/FRAME:004204/0264 Effective date: 19831110 |
|
AS | Assignment |
Owner name: BANK ONE OF EASTERN OHIO, NATIONAL ASSOCIATION, A Free format text: SECURITY INTEREST;ASSIGNOR:BLISS-SALEM, INC.;REEL/FRAME:004701/0929 Effective date: 19861212 |
|
AS | Assignment |
Owner name: BLISS-SALEM, INC., A CORP. OF DE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. EFFECTIVE DATE;ASSIGNOR:E.W. BLISS COMPANY, INC.;REEL/FRAME:004744/0727 Effective date: 19870731 |