EP2317144A3 - Gear for an hydraulic gear machine - Google Patents

Gear for an hydraulic gear machine Download PDF

Info

Publication number
EP2317144A3
EP2317144A3 EP10189404A EP10189404A EP2317144A3 EP 2317144 A3 EP2317144 A3 EP 2317144A3 EP 10189404 A EP10189404 A EP 10189404A EP 10189404 A EP10189404 A EP 10189404A EP 2317144 A3 EP2317144 A3 EP 2317144A3
Authority
EP
European Patent Office
Prior art keywords
gear
profile
hydraulic
machine
respect
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.)
Withdrawn
Application number
EP10189404A
Other languages
German (de)
French (fr)
Other versions
EP2317144A2 (en
Inventor
Mario Antonio Morselli
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.)
Settima Meccanica Srl
Original Assignee
Settima Meccanica Srl
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 Settima Meccanica Srl filed Critical Settima Meccanica Srl
Publication of EP2317144A2 publication Critical patent/EP2317144A2/en
Publication of EP2317144A3 publication Critical patent/EP2317144A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/084—Toothed wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons

Abstract

A hydraulic gear apparatus comprises a pair of gears which mesh with each other with semi-encapsulation. Each gear has a plurality of teeth having a profile which falls within a tolerance band of ± 1/15, more preferably ± 1/20, and even more preferably ± 1/30 with respect to the height of the tooth, with respect to a profile homothetic to a profile defined by a predetermined spline function passing through a plurality of node points having predetermined coordinates {X,Y} with their origin on the axis of rotation.
EP10189404A 2009-10-30 2010-10-29 Gear for an hydraulic gear machine Withdrawn EP2317144A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITBO2009A000714A IT1398817B1 (en) 2009-10-30 2009-10-30 TOOTHED WHEEL WITH PROFILE TO ENGAGE WITH SEMI-INCAPSULATION IN A GEAR HYDRAULIC EQUIPMENT

Publications (2)

Publication Number Publication Date
EP2317144A2 EP2317144A2 (en) 2011-05-04
EP2317144A3 true EP2317144A3 (en) 2012-12-26

Family

ID=42154360

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10189404A Withdrawn EP2317144A3 (en) 2009-10-30 2010-10-29 Gear for an hydraulic gear machine

Country Status (6)

Country Link
US (1) US20110103993A1 (en)
EP (1) EP2317144A3 (en)
CN (1) CN102052447B (en)
BR (1) BRPI1003887A2 (en)
IT (1) IT1398817B1 (en)
TW (1) TW201124653A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9404366B2 (en) * 2009-10-30 2016-08-02 Settima Meccanica S.R.L. Gear wheel with profile capable of meshing with semi-encapsulation in a geared hydraulic apparatus
CN102322419B (en) * 2011-09-30 2016-01-20 浙江奥威特液压机械有限公司 Screw pump
KR20180097630A (en) * 2015-12-11 2018-08-31 기어 이노베이션즈 엘엘씨 A conjugate gear having continuous tooth flank contacts
CN106015516B (en) * 2016-05-24 2018-06-12 北京航空航天大学 A kind of inside engaged gear tooth Shape Design method based on B-spline path of contact
DE102017221736B4 (en) 2017-12-03 2021-11-25 Audi Ag Process for influencing the acoustics of gears

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2159744A (en) * 1936-08-26 1939-05-23 Brown & Sharpe Mfg Gear pump
US3209611A (en) * 1961-05-02 1965-10-05 Iyoi Hitosi Teeth profiles of rotors for gear pumps of rotary type
US3164099A (en) * 1961-08-09 1965-01-05 Iyoi Hitosi Toothed profiles of rotors of gear pump
ATE184080T1 (en) 1994-07-07 1999-09-15 Brown David Hydraulics Ltd HELICAL GEAR PUMP OR MOTOR
IT1283389B1 (en) * 1995-03-10 1998-04-17 Stem Numerical Engineering Srl PROFILES FOR ROOTS COMPRESSOR ROTORS
WO2000077419A1 (en) * 1999-06-14 2000-12-21 Wei Xiong A gear and a fluid machine with a pair of gears
ITBO20000119A1 (en) 2000-03-08 2001-09-10 Mario Antonio Morselli VOLUMETRIC ROTARY PUMP WITH HELICAL ROTORS.
ATE315175T1 (en) * 2002-06-12 2006-02-15 Mario Antonio Morselli GEAR PUMP WITH SPLINE FUNCTION GENERATED GEAR PROFILE
ITBO20070172A1 (en) * 2007-03-14 2008-09-15 Mario Antonio Morselli HYDRAULIC EQUIPMENT WITH REFINED GEARS

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
No Search *

Also Published As

Publication number Publication date
EP2317144A2 (en) 2011-05-04
ITBO20090714A1 (en) 2011-04-30
CN102052447B (en) 2017-04-12
US20110103993A1 (en) 2011-05-05
CN102052447A (en) 2011-05-11
BRPI1003887A2 (en) 2012-06-12
TW201124653A (en) 2011-07-16
IT1398817B1 (en) 2013-03-21

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