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GB2034612A - Manufacture of a gear housing - Google Patents

Manufacture of a gear housing Download PDF

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Publication number
GB2034612A
GB2034612A GB7938032A GB7938032A GB2034612A GB 2034612 A GB2034612 A GB 2034612A GB 7938032 A GB7938032 A GB 7938032A GB 7938032 A GB7938032 A GB 7938032A GB 2034612 A GB2034612 A GB 2034612A
Authority
GB
United Kingdom
Prior art keywords
bore
gear
housing
axis
forming
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.)
Granted
Application number
GB7938032A
Other versions
GB2034612B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SKF Nova AB
Original Assignee
SKF Nova AB
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 SKF Nova AB filed Critical SKF Nova AB
Publication of GB2034612A publication Critical patent/GB2034612A/en
Application granted granted Critical
Publication of GB2034612B publication Critical patent/GB2034612B/en
Expired legal-status Critical Current

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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/027—Gearboxes; Mounting gearing therein characterised by means for venting gearboxes, e.g. air breathers
    • 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
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
    • F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
    • F16H1/16—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
    • 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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/039—Gearboxes for accommodating worm gears
    • 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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02086—Measures for reducing size of gearbox, e.g. for creating a more compact transmission casing
    • 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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • F16H2057/0235—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly specially adapted to allow easy accessibility and repair

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)
  • Rotary Pumps (AREA)

Abstract

An elongate hollow body (10) of constant cross-section is formed by extension or casting and is cut to the required length of a gear housing. The body is formed with a bore (11) and another bore (14) is subsequently formed in it. The planes containing the axes of the bores are orthogonal but the axes do not intersect. The bores overlap and communicate with each other so that a gear can be mounted in each bore for intermeshing engagement. The housing is provided with longitudinally extending cooling flanges (12) and recesses (13) for accommodating bolts. <IMAGE>

Description

SPECIFICATION A method of forming a gear housing and a gear housing formed by such a method This invention concerns a method of forming a gear housing and a gear housing formed by such a method.
The invention provides a method of forming a gear housing in which one gear axis is contained in a plane extending perpendicular to another gear axis and in which the two said axes do not overlap, the method comprising forming an elongate body having a cross-sectional size and shape which is constant along the length of the body and having a longitudinally extending bore, the axis of the bore corresponding to the said one gear axis, cutting the body to a desired length for one gear housing, and forming in the body another bore of which the axis corresponds to the said another gear axis, the two bores overlapping to provide communication therebetween such that a gear can be mounted in each bore and be in driving engagement with each other.
The method may include forming the body with longitudinally extending cooling flanges.
The method may also include forming the body with longitudinally extending recesses for accommodating bolts.
The method may include extruding or casting the elongate body with the first said bore The invention also includes a gear housing when formed by a method according to any one of the immediately preceding four statements.
An embodiment of the invention will now be described by way of example and with reference to the accompanying drawings, of which: Figure 1 is a cross-section of an elongate body with a longitudinally extending bore; Figure 2 is an axial section of a gear train mounted in a housing according to the invention; and Figure 3 is a section on Ill-Ill of the gear train shown in Figure 2.
In the method according to the invention an elongate body is formed having a cross-sectional size and shape which is constant along the length of the body and having a longitudinally extending bore.
A suitable body 10 is shown in cross-section in Figure 1 having a bore 11. The body can be produced by extrusion or casting and of, for example, aluminium. The surface quality of a body produced in this manner is such that further working is not necessary.
Further working of the bore 11 may be required if it is to be used as a bearing seat with direct contact with the bearing.
The body loins formed with longitudinally extending cooling flanges 12. An aluminium gear housing having such cooling flanges conducts the heat away from the gears rapidly so minimizing the risk of overheating and consequent breakdown.
The body 10 is also formed with longitudinally extending recesses 13 for accommodating bolts as hereinafter described.
After forming the elongate body, it is cut to provide a number of housing blanks, each of a desired length, and another bore 14 is formed in the body. The first bore 11 has an axis which corresponds to one gear axis and the second bore 14 has an axis which corresponds to another gear axis. The axis of one gear is contained in a place extending perpendicular to the other gear axis, and the two said axes do not intersect. The second bore 14 is shown in dashed lines in Figure 1, and the two bores 11 and 14 overlap to provide communication therebetween such that a gear can be mounted in each bore and be in driving engagement with each other.
Figures 2 and 3 show a gear train mounted in a housing 15 according to the invention, the housing being housing blank 10 shown in Figure 1 with bore 14 formed in it.
The housing 15 has a first longitudinally extending bore 16 corresponding to bore 11 and a shaft 17 extending through the first bore and mounted for rotation by two ball bearings 18 and 19.Agearwheel 20 is mounted on shaft 17 for rotation therewith.
Two cover plates 21 and 22 are fixed at each end of bore 16 to axially locate the bearings 18 and 19 and gearwheel 20. The cover plates 21,22 are held in position by end plates 23 and 24, one at each end, and by bolts 25 located in longitudinally extending recesses 26 in the housing 15.
Asecond bore 27 (corresponding to bore 14) in housing 15 has a shaft 28 extending through it and mounted for rotation by two ball bearings 29 and 30.
A worm wheel 31 is mounted on shaft 28 for rotation therewith.
Two cover plates 32 and 33 are fixed to the side of the housing 15 and one at each end of bore 27 by bolts 34, and axially located the bearings 29 and 30 are worm wheel 31.
Gear wheel 20 and worm wheel 31 mesh and are in driving engagement with each other where the two bores 16 and 27 communicate with each other.
The shaft 28, on which the worm wheel 31 is mounted, may be connected to the drive shaft of a motor and shaft 16, on which the gear wheel 20 is mounted, will then be the output of the gear train.
As is apparent from the described and illustrated embodiment, a gear with a housing according to the invention is compact and rigid and is easy to manufacture and assemble.
Bushes or liners can be inserted in each bore 16, 27 to act as seats for the bearings 18,19 and 29,30.
This simplifies the working of the housing 15.
The axis of the bore 11, 16 and one end plane of the housing 10, 15 can be used as a reference line and a reference plane respectively when fixing the housing for drilling the bore 14,27 in the desired position.
1. A method of forming a gear housing in which one gear axis is contained in a plane extending perpendicular to another gear axis and in which the two said axes do not overlap, the method comprising forming an elongate body having a crosssectional size and shape which is constant along the length of the body and having a longitudinally extending bore, the axis of the bore corresponding to the said one gear axis, cutting the body to a
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (6)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION A method of forming a gear housing and a gear housing formed by such a method This invention concerns a method of forming a gear housing and a gear housing formed by such a method. The invention provides a method of forming a gear housing in which one gear axis is contained in a plane extending perpendicular to another gear axis and in which the two said axes do not overlap, the method comprising forming an elongate body having a cross-sectional size and shape which is constant along the length of the body and having a longitudinally extending bore, the axis of the bore corresponding to the said one gear axis, cutting the body to a desired length for one gear housing, and forming in the body another bore of which the axis corresponds to the said another gear axis, the two bores overlapping to provide communication therebetween such that a gear can be mounted in each bore and be in driving engagement with each other. The method may include forming the body with longitudinally extending cooling flanges. The method may also include forming the body with longitudinally extending recesses for accommodating bolts. The method may include extruding or casting the elongate body with the first said bore The invention also includes a gear housing when formed by a method according to any one of the immediately preceding four statements. An embodiment of the invention will now be described by way of example and with reference to the accompanying drawings, of which: Figure 1 is a cross-section of an elongate body with a longitudinally extending bore; Figure 2 is an axial section of a gear train mounted in a housing according to the invention; and Figure 3 is a section on Ill-Ill of the gear train shown in Figure 2. In the method according to the invention an elongate body is formed having a cross-sectional size and shape which is constant along the length of the body and having a longitudinally extending bore. A suitable body 10 is shown in cross-section in Figure 1 having a bore 11. The body can be produced by extrusion or casting and of, for example, aluminium. The surface quality of a body produced in this manner is such that further working is not necessary. Further working of the bore 11 may be required if it is to be used as a bearing seat with direct contact with the bearing. The body loins formed with longitudinally extending cooling flanges 12. An aluminium gear housing having such cooling flanges conducts the heat away from the gears rapidly so minimizing the risk of overheating and consequent breakdown. The body 10 is also formed with longitudinally extending recesses 13 for accommodating bolts as hereinafter described. After forming the elongate body, it is cut to provide a number of housing blanks, each of a desired length, and another bore 14 is formed in the body. The first bore 11 has an axis which corresponds to one gear axis and the second bore 14 has an axis which corresponds to another gear axis. The axis of one gear is contained in a place extending perpendicular to the other gear axis, and the two said axes do not intersect. The second bore 14 is shown in dashed lines in Figure 1, and the two bores 11 and 14 overlap to provide communication therebetween such that a gear can be mounted in each bore and be in driving engagement with each other. Figures 2 and 3 show a gear train mounted in a housing 15 according to the invention, the housing being housing blank 10 shown in Figure 1 with bore 14 formed in it. The housing 15 has a first longitudinally extending bore 16 corresponding to bore 11 and a shaft 17 extending through the first bore and mounted for rotation by two ball bearings 18 and 19.Agearwheel 20 is mounted on shaft 17 for rotation therewith. Two cover plates 21 and 22 are fixed at each end of bore 16 to axially locate the bearings 18 and 19 and gearwheel 20. The cover plates 21,22 are held in position by end plates 23 and 24, one at each end, and by bolts 25 located in longitudinally extending recesses 26 in the housing 15. Asecond bore 27 (corresponding to bore 14) in housing 15 has a shaft 28 extending through it and mounted for rotation by two ball bearings 29 and 30. A worm wheel 31 is mounted on shaft 28 for rotation therewith. Two cover plates 32 and 33 are fixed to the side of the housing 15 and one at each end of bore 27 by bolts 34, and axially located the bearings 29 and 30 are worm wheel 31. Gear wheel 20 and worm wheel 31 mesh and are in driving engagement with each other where the two bores 16 and 27 communicate with each other. The shaft 28, on which the worm wheel 31 is mounted, may be connected to the drive shaft of a motor and shaft 16, on which the gear wheel 20 is mounted, will then be the output of the gear train. As is apparent from the described and illustrated embodiment, a gear with a housing according to the invention is compact and rigid and is easy to manufacture and assemble. Bushes or liners can be inserted in each bore 16, 27 to act as seats for the bearings 18,19 and 29,30. This simplifies the working of the housing 15. The axis of the bore 11, 16 and one end plane of the housing 10, 15 can be used as a reference line and a reference plane respectively when fixing the housing for drilling the bore 14,27 in the desired position. CLAIMS
1. A method of forming a gear housing in which one gear axis is contained in a plane extending perpendicular to another gear axis and in which the two said axes do not overlap, the method comprising forming an elongate body having a crosssectional size and shape which is constant along the length of the body and having a longitudinally extending bore, the axis of the bore corresponding to the said one gear axis, cutting the body to a desired length for one gear housing, and forming in the body another bore of which the axis corresponds to the said another gear axis, the two bores overiapping to provide communication therebetween such that a gear can be mounted in each bore and be in driving engagement with each other.
2. A method as claimed in claim 1, including forming the body with longitudinally extending cooling flanges.
3. A method as claimed in claim 1 or 2, including forming the body with longitudinally extending recesses for accommodating bolts.
4. A method as claimed in any proceding claim, including extruding the elongate body with the first said bore.
5. A method of forming a gear housing substantially as herein described with reference to and as shown in the accompanying drawings.
6. A gear housing when formed by a method as claimed in any preceding claim.
GB7938032A 1978-11-06 1979-11-02 Manufacture of a gear housing Expired GB2034612B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7811426A SE412794B (en) 1978-11-06 1978-11-06 SET TO MAKE GEAR HOUSES FOR TRANSMISSIONS WITH CROSSING AXLES

Publications (2)

Publication Number Publication Date
GB2034612A true GB2034612A (en) 1980-06-11
GB2034612B GB2034612B (en) 1982-10-06

Family

ID=20336265

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7938032A Expired GB2034612B (en) 1978-11-06 1979-11-02 Manufacture of a gear housing

Country Status (8)

Country Link
JP (1) JPS5565762A (en)
BR (1) BR7907062A (en)
CH (1) CH640921A5 (en)
DE (1) DE2944398A1 (en)
FR (1) FR2441108B1 (en)
GB (1) GB2034612B (en)
IT (1) IT1165329B (en)
SE (1) SE412794B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993022584A1 (en) * 1992-05-04 1993-11-11 Joerg Helmut Gear-casing
WO2003074209A2 (en) * 2002-03-06 2003-09-12 Adcock Technology Limited A method of manufacture of a metallic component apparatus for use in the method and method of finishing a metallic component
GB2389066B (en) * 2002-03-06 2005-08-17 Adcock Tech Ltd A method of manufacture of a metallic component,apparatus for use in the method and a method of finishing a metallic component
WO2008134388A1 (en) * 2007-04-30 2008-11-06 Robert Bosch Llc Gearbox housing assembly
WO2011151046A1 (en) * 2010-06-02 2011-12-08 Imo Holding Gmbh Swivel drive
EP4400254A1 (en) * 2023-01-11 2024-07-17 Hilti Aktiengesellschaft Transmission assembly with a heat-dissipating transmission housing

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE428402B (en) * 1979-11-07 1983-06-27 Johansson Claes Verkstads PROCEDURE FOR MANUFACTURING PEDALS
JPH0775443B2 (en) * 1992-10-08 1995-08-09 平山工業株式会社 Divider for breaker
DE19957743A1 (en) * 1999-12-01 2001-06-21 Graessner Gmbh Antriebstechnik Angular gear
WO2006105809A1 (en) * 2005-04-01 2006-10-12 Getriebebau Nord Gmbh & Co. Kg Spur gear drive
EP1582775A1 (en) * 2004-04-02 2005-10-05 Getriebebau Nord GmbH &amp; Co. KG Transmission housing

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT271123B (en) * 1967-06-15 1969-05-27 Helmut Joerg Gear housing

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993022584A1 (en) * 1992-05-04 1993-11-11 Joerg Helmut Gear-casing
US5572906A (en) * 1992-05-04 1996-11-12 J+E,Uml O+Ee Rg; Helmut Transmission Housing
AU677187B2 (en) * 1992-05-04 1997-04-17 Helmut Jorg Gear-casing
WO2003074209A2 (en) * 2002-03-06 2003-09-12 Adcock Technology Limited A method of manufacture of a metallic component apparatus for use in the method and method of finishing a metallic component
WO2003074209A3 (en) * 2002-03-06 2004-02-26 Adcock Tech Ltd A method of manufacture of a metallic component apparatus for use in the method and method of finishing a metallic component
GB2389066B (en) * 2002-03-06 2005-08-17 Adcock Tech Ltd A method of manufacture of a metallic component,apparatus for use in the method and a method of finishing a metallic component
WO2008134388A1 (en) * 2007-04-30 2008-11-06 Robert Bosch Llc Gearbox housing assembly
CN101680523B (en) * 2007-04-30 2013-03-27 罗伯特·博世有限公司 Gearbox housing assembly
US8770063B2 (en) 2007-04-30 2014-07-08 Robert Bosch Gmbh Gearbox housing assembly
WO2011151046A1 (en) * 2010-06-02 2011-12-08 Imo Holding Gmbh Swivel drive
EP4400254A1 (en) * 2023-01-11 2024-07-17 Hilti Aktiengesellschaft Transmission assembly with a heat-dissipating transmission housing

Also Published As

Publication number Publication date
DE2944398A1 (en) 1980-05-14
JPS5748708B2 (en) 1982-10-18
IT1165329B (en) 1987-04-22
IT7926679A0 (en) 1979-10-22
BR7907062A (en) 1980-07-15
JPS5565762A (en) 1980-05-17
FR2441108A1 (en) 1980-06-06
FR2441108B1 (en) 1987-03-20
GB2034612B (en) 1982-10-06
SE412794B (en) 1980-03-17
CH640921A5 (en) 1984-01-31

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19931102