US3675454A - Gear and profile rolling machines - Google Patents
Gear and profile rolling machines Download PDFInfo
- Publication number
- US3675454A US3675454A US40557A US3675454DA US3675454A US 3675454 A US3675454 A US 3675454A US 40557 A US40557 A US 40557A US 3675454D A US3675454D A US 3675454DA US 3675454 A US3675454 A US 3675454A
- Authority
- US
- United States
- Prior art keywords
- heads
- forming rolls
- pair
- frame
- piston rods
- 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
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 11
- 238000005452 bending Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H5/00—Making gear wheels, racks, spline shafts or worms
- B21H5/02—Making gear wheels, racks, spline shafts or worms with cylindrical outline, e.g. by means of die rolls
- B21H5/022—Finishing gear teeth with cylindrical outline, e.g. burnishing
Definitions
- a gear rolling machine comprising a pair of opposed rotatable forming rolls supported by heads, one of which is slidable and the other of which is slidable or fixed, and a pair of hydraulic cylinders, each fixed to one of the heads, the piston rod of each cylinder being attached to the opposite head and the piston rods extending parallel to and being spaced substantially symmetrically with respect to the load axis.
- This invention relates to gear rolling machines of the type including a pair of opposed rotating forming rolls which are given infeed to cause them to contact a centrally located workpiece. Increase of the infeed load to a sufliciently high value causes the workpiece to deform to a shape conjugate to that of the rolls.
- machines of this type have a fixed head and a sliding head each carrying a forming roll. lnfeed to the sliding head is effected by a hydraulic cylinder reacting against a cantilever end support. Loading reactions are generally resisted by bending of the cantilever to the machine frame. Usually the cantilever is supported by additional ties between its unsupported end and the fixed head to restrict deflections to a reasonable level. This arrangement requires heavy sections in the machine frame to maintain sufficient stiffness to ensure that deflections will be small and prevent them from affecting machine alignment as the slideways are generally mounted on the frame.
- the invention provides a gear rolling machine in which the forming rolls are supported by heads, one of which is slidable and the other of which is slidable or fixed, and a pair of hydraulic cylinders, each fixed to one of the heads, the piston rod of each cylinder being attached to the opposite head and the piston rods extending parallel to and being spaced substantially symmetrically with respect to the load axis.
- the drawing shows a workpiece 3 supported on a conveyor 10 and disposed between rotating forming rolls 1 and 2 driven by driving shafts 21 and 22. Pre-rotation may be imparted to the workpiece before infeed is imparted to the forming rolls to facilitate engagement of the teeth.
- the forming roll 1 is supported on a sliding head 1 l and the forming roll 2 is supported on a head 12 which may either be fixed or sliding.
- Hydraulic cylinders 4 are mounted on the heads 11 and 12 respectively and have piston rods 6, 7 connected to the opposite heads by screws 16 and 17.
- the piston rods carry adjustable dead stops 26, 27 for limiting the infeed movement imparted to the forming rolls.
- the piston rods 6 and 7 are symmetrically spaced about the load axis with the result that no resultant reactions will be transmitted through the machine frame or the location slideways 8 and 9. This allows the frame to be built considerably lighter than heretofore as load deflections are restricted to the piston rods parallel to the load axis and bending is obviated.
- the workpieces are provided with preformed teeth, e. g. by hobbing, before they are presented before they are presented to the gear rolling machine which provides for finish forming of the teeth. to the gear rolling machine which provides for finish forming of the teeth.
- a gear rolling machine comprising a frame, a pair of opposed rotatable forrning rolls, a pair of heads mounted on said frame, one of said forming rolls being mounted on each said head, at least one of said heads being slidable on said frame to provide infeed of its associated forming roll with respect to a workpiece located between said forming rolls, and a pair of hydraulic cylinders, each fixed to one of said heads and each having a piston rod attached to the opposite head, said piston rods extending parallel to and being spaced substantially symmetrically with respect to the load axis between said forming rolls and said workpiece.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear Transmission (AREA)
- Metal Rolling (AREA)
Abstract
A gear rolling machine, comprising a pair of opposed rotatable forming rolls supported by heads, one of which is slidable and the other of which is slidable or fixed, and a pair of hydraulic cylinders, each fixed to one of the heads, the piston rod of each cylinder being attached to the opposite head and the piston rods extending parallel to and being spaced substantially symmetrically with respect to the load axis.
Description
United States Patent Pratt July 11, 1972 [S4] GEAR AND PROFILE ROLLING MACHINES [72] Inventor: Ledle Raymond Pratt. West Haddon, near Rugby, England [7H Assigncc; Chlrles Chillthlll Limited, Birmingham.
England [22] Filed: May 26, I970 [2H AppLNo; 40,557
[30] Foreign Application Priority Data June 2, I969 Great Britain ..27,846/69 152i US. Cl ..72/l08, 72/453 151] lnt.Cl [58] Fleld olSearch ..72/l02, 104, l08,245,453
[56] References Cited UNITED STATES PATENIS 3,533,258 10/1970 Leonard et al ..72/l08 2,559,360 7/ l 95l Kurzweil l ..29/9O 3,543,555 l2/l 970 Baumann ..72/245 Primary Examinerbowell A. Larson Attorney-Watson, Cole. Grindle & Watson ABSTRACT A gear rolling machine, comprising a pair of opposed rotatable forming rolls supported by heads, one of which is slidable and the other of which is slidable or fixed, and a pair of hydraulic cylinders, each fixed to one of the heads, the piston rod of each cylinder being attached to the opposite head and the piston rods extending parallel to and being spaced substantially symmetrically with respect to the load axis.
ZCIahmJDrawingfigure GEAR AND PROFILE ROLLING MACHINES This invention relates to gear rolling machines of the type including a pair of opposed rotating forming rolls which are given infeed to cause them to contact a centrally located workpiece. Increase of the infeed load to a sufliciently high value causes the workpiece to deform to a shape conjugate to that of the rolls.
Generally machines of this type have a fixed head and a sliding head each carrying a forming roll. lnfeed to the sliding head is effected by a hydraulic cylinder reacting against a cantilever end support. Loading reactions are generally resisted by bending of the cantilever to the machine frame. Usually the cantilever is supported by additional ties between its unsupported end and the fixed head to restrict deflections to a reasonable level. This arrangement requires heavy sections in the machine frame to maintain sufficient stiffness to ensure that deflections will be small and prevent them from affecting machine alignment as the slideways are generally mounted on the frame.
The invention provides a gear rolling machine in which the forming rolls are supported by heads, one of which is slidable and the other of which is slidable or fixed, and a pair of hydraulic cylinders, each fixed to one of the heads, the piston rod of each cylinder being attached to the opposite head and the piston rods extending parallel to and being spaced substantially symmetrically with respect to the load axis.
One embodiment of the invention illustrated in the accompanying drawing, is an end elevation of the machine, partly in section.
The drawing shows a workpiece 3 supported on a conveyor 10 and disposed between rotating forming rolls 1 and 2 driven by driving shafts 21 and 22. Pre-rotation may be imparted to the workpiece before infeed is imparted to the forming rolls to facilitate engagement of the teeth. The forming roll 1 is supported on a sliding head 1 l and the forming roll 2 is supported on a head 12 which may either be fixed or sliding.
Hydraulic cylinders 4, are mounted on the heads 11 and 12 respectively and have piston rods 6, 7 connected to the opposite heads by screws 16 and 17. When oil under pressure is supplied to the appropriate ends of the cylinders the piston rods 6, 7 are caused to retract and the heads 4, 5 to approach each other along slideways 8 and 9 on the frame of the machine. The piston rods carry adjustable dead stops 26, 27 for limiting the infeed movement imparted to the forming rolls. The piston rods 6 and 7 are symmetrically spaced about the load axis with the result that no resultant reactions will be transmitted through the machine frame or the location slideways 8 and 9. This allows the frame to be built considerably lighter than heretofore as load deflections are restricted to the piston rods parallel to the load axis and bending is obviated.
The workpieces are provided with preformed teeth, e. g. by hobbing, before they are presented before they are presented to the gear rolling machine which provides for finish forming of the teeth. to the gear rolling machine which provides for finish forming of the teeth.
What i claim as my invention and desire to secure by Letters Patent is:
1. A gear rolling machine, comprising a frame, a pair of opposed rotatable forrning rolls, a pair of heads mounted on said frame, one of said forming rolls being mounted on each said head, at least one of said heads being slidable on said frame to provide infeed of its associated forming roll with respect to a workpiece located between said forming rolls, and a pair of hydraulic cylinders, each fixed to one of said heads and each having a piston rod attached to the opposite head, said piston rods extending parallel to and being spaced substantially symmetrically with respect to the load axis between said forming rolls and said workpiece.
2. A machine as claimed in claim 1, in which the piston rods carry adjustable dead stops for limiting the infeed movement which can be imparted to the forming rolls.
i I i i i
Claims (2)
1. A gear rolling machine, comprising a frame, a pair of opposed rotatable forming rolls, a pair of heads mounted on said frame, one of said forming rolls being mounted on each said head, at least one of said heads being slidable on said frame to provide infeed of its associated forming roll with respect to a workpiece located between said forming rolls, and a pair of hydraulic cylinders, each fixed to one of said heads and each having a piston rod attached to the opposite head, said piston rods extending parallel to and being spaced substantially symmetrically with respect to the load axis between said forming rolls and said workpiece.
2. A machine as claimed in claim 1, in which the piston rods carry adjustable dead stops for limiting the infeed movement which can be imparted to the forming rolls.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB27846/69A GB1246549A (en) | 1969-06-02 | 1969-06-02 | Gear rolling machines |
Publications (1)
Publication Number | Publication Date |
---|---|
US3675454A true US3675454A (en) | 1972-07-11 |
Family
ID=10266253
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US40557A Expired - Lifetime US3675454A (en) | 1969-06-02 | 1970-05-26 | Gear and profile rolling machines |
Country Status (3)
Country | Link |
---|---|
US (1) | US3675454A (en) |
DE (1) | DE2025659A1 (en) |
GB (1) | GB1246549A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5339669A (en) * | 1991-05-23 | 1994-08-23 | Escofier Technologie S.A. | Apparatus and process permitting the cold forming of grooves on the wall of a revolving part |
EP0894555A2 (en) * | 1997-07-29 | 1999-02-03 | Revue Thommen AG | Profile rolling machine with supporting frame |
US5930896A (en) * | 1996-03-15 | 1999-08-03 | Nissan Motor Co., Ltd. | Apparatus and method for forming a gear |
WO2005075125A1 (en) * | 2004-02-06 | 2005-08-18 | Ernst Grob Ag | Device and method for producing tooth-like profiled sections on workpieces |
KR100847134B1 (en) | 2006-08-29 | 2008-07-18 | 에른스트 그로브 아게 | Device and method for manufacture of cylindrical workpieces |
US11426835B2 (en) * | 2013-03-05 | 2022-08-30 | Knust-Godwin Llc | Screw thread roller burnishing apparatus |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1378508A (en) * | 1971-10-07 | 1974-12-27 | Formflo Ltd | Diametral control of rolled rings |
DE10244483B4 (en) * | 2002-09-24 | 2006-08-31 | Profiroll Technologies Gmbh | Profile rolling machine with power frame for rolling with externally toothed round rolling tools |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2559360A (en) * | 1946-01-12 | 1951-07-03 | Morey Machinery Co Inc | Machine tool |
US3533258A (en) * | 1969-03-21 | 1970-10-13 | Teledyne Mid America Corp | Apparatus for roll forming workpieces |
US3543555A (en) * | 1967-05-16 | 1970-12-01 | Demag Ag | Form changing device for continuous casting |
-
1969
- 1969-06-02 GB GB27846/69A patent/GB1246549A/en not_active Expired
-
1970
- 1970-05-26 US US40557A patent/US3675454A/en not_active Expired - Lifetime
- 1970-05-26 DE DE19702025659 patent/DE2025659A1/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2559360A (en) * | 1946-01-12 | 1951-07-03 | Morey Machinery Co Inc | Machine tool |
US3543555A (en) * | 1967-05-16 | 1970-12-01 | Demag Ag | Form changing device for continuous casting |
US3533258A (en) * | 1969-03-21 | 1970-10-13 | Teledyne Mid America Corp | Apparatus for roll forming workpieces |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5339669A (en) * | 1991-05-23 | 1994-08-23 | Escofier Technologie S.A. | Apparatus and process permitting the cold forming of grooves on the wall of a revolving part |
US5930896A (en) * | 1996-03-15 | 1999-08-03 | Nissan Motor Co., Ltd. | Apparatus and method for forming a gear |
EP0894555A2 (en) * | 1997-07-29 | 1999-02-03 | Revue Thommen AG | Profile rolling machine with supporting frame |
EP0894555A3 (en) * | 1997-07-29 | 2000-04-19 | Revue Thommen AG | Profile rolling machine with supporting frame |
WO2005075125A1 (en) * | 2004-02-06 | 2005-08-18 | Ernst Grob Ag | Device and method for producing tooth-like profiled sections on workpieces |
US20070163320A1 (en) * | 2004-02-06 | 2007-07-19 | Ernst Grob Ag | Device and method for producing tooth-like profiled sections on workpieces |
US7562549B2 (en) | 2004-02-06 | 2009-07-21 | Ernst Grob Ag | Device and method for producing tooth-like profiled sections on workpieces |
EP1713600B1 (en) | 2004-02-06 | 2016-10-12 | Ernst Grob Ag | Device and method for producing tooth-like profiled sections on workpieces |
KR100847134B1 (en) | 2006-08-29 | 2008-07-18 | 에른스트 그로브 아게 | Device and method for manufacture of cylindrical workpieces |
US11426835B2 (en) * | 2013-03-05 | 2022-08-30 | Knust-Godwin Llc | Screw thread roller burnishing apparatus |
Also Published As
Publication number | Publication date |
---|---|
GB1246549A (en) | 1971-09-15 |
DE2025659A1 (en) | 1970-12-10 |
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