SE504381C2 - Double acting hydraulic bushing - Google Patents

Double acting hydraulic bushing

Info

Publication number
SE504381C2
SE504381C2 SE9404172A SE9404172A SE504381C2 SE 504381 C2 SE504381 C2 SE 504381C2 SE 9404172 A SE9404172 A SE 9404172A SE 9404172 A SE9404172 A SE 9404172A SE 504381 C2 SE504381 C2 SE 504381C2
Authority
SE
Sweden
Prior art keywords
pin
cavity
wall
pressurizing device
bushing
Prior art date
Application number
SE9404172A
Other languages
Swedish (sv)
Other versions
SE9404172L (en
SE9404172D0 (en
Inventor
Jan Danielsen
Original Assignee
Spirex Tools 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
Priority claimed from SE9401395A external-priority patent/SE504380C2/en
Application filed by Spirex Tools Ab filed Critical Spirex Tools Ab
Priority to SE9404172A priority Critical patent/SE504381C2/en
Publication of SE9404172D0 publication Critical patent/SE9404172D0/en
Priority to AU24220/95A priority patent/AU2422095A/en
Priority to PCT/SE1995/000381 priority patent/WO1995029029A1/en
Publication of SE9404172L publication Critical patent/SE9404172L/en
Publication of SE504381C2 publication Critical patent/SE504381C2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/24—Chucks characterised by features relating primarily to remote control of the gripping means
    • B23B31/30—Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck
    • B23B31/305—Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck the gripping means is a deformable sleeve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/20—Longitudinally-split sleeves, e.g. collet chucks
    • B23B31/201—Characterized by features relating primarily to remote control of the gripping means
    • B23B31/2012—Threaded cam actuator

Abstract

Hydraulic bushings (1) are generally provided with a peripheral flange in which a pressurizing means (3, 4, 5) is arranged. A desire has been expressed to eliminate the peripheral flange. According to the present invention this is made possible by placing the pressurizing means (3, 4, 5) in the rear end (6) of the bushing (1).

Description

504 381 2 Denna uppfinning beskrives med nedanstående ritningar där Fig 1 Fig 2 Fig 3 Fig 4 visar en bussning enligt patentansökan 9401395-O visar bussningen enl Fig 1 applicerad i del som utsättes för rotation visar en känd bussning med del som tilldelar bussningen rotationsrörelse visar en bussningskonstruktion som kan vara både slank och kraftig och som i princip är utformad enligt 9401395-O men med den väsentliga skillnaden att den del som är införd i hållaredelen (8) är utformad som en hydraulisk bussning (13) med expansion utåt mot hålrummet i hållaredelen (8). This invention is described with the following drawings where Fig. 1 Fig. 2 Fig. 3 Fig. 4 shows a bushing according to patent application 9401395-0 shows the bushing according to Fig. 1 applied in part which is subjected to rotation shows a known bushing with part which assigns the bushing rotational movement shows a bushing construction which can be both slim and strong and which in principle is designed according to 9401395-0 but with the essential difference that the part inserted in the holder part (8) is designed as a hydraulic bushing (13) with expansion outwards towards the cavity in the holder part (8).

Med samma trycksättningsanordning (3, 4, 5) fås en expansion inåt för fastlåsning av ett bearbetningsverktyg och en exp- ansion utåt för fastlåsning av tappen (13) mot hållaredelen. (8).With the same pressurizing device (3, 4, 5) an inward expansion is obtained for locking a machining tool and an outward expansion for locking the pin (13) against the holder part. (8).

Konstruktionen medger centrisk tillförsel av kylmedia patentansökan 9401395-O.The construction allows centric supply of refrigerant patent application 9401395-O.

Konstruktionen kan utformas med separata trycksättningssystem enligt som lämpligen kan avgränsas enligt känd teknik med kolv och skruv eller på annat likartat sätt.The construction can be designed with separate pressurization systems according to which can suitably be delimited according to known technology with piston and screw or in another similar way.

För att axiellt låsa tappen (13) mot hållaredelen under icke trycksatt tilštånd kan känd teknik med svetsning eller skruv- förband (12) liksom konisk cylindrisk pinne användas liksom Eresspassning. U _ _ _ onstruktionen ar rotationssymetrisk och minskar behovet av balansering vid lägre varvtal.To axially lock the pin (13) against the holder part under non-pressurized condition, known technology with welding or screw joints (12) as well as conical cylindrical pin can be used as well as Eress fitting. The design is rotationally symmetrical and reduces the need for balancing at lower speeds.

Utförandet enligt patentkrav har den fördelen att den dubbelverk- ande hydrauliska bussningen kan levereras till en verktygstill- verkare som halvfabrikat för inslipning till tolerans av denne och för användning i varierande typer av hållare.The design according to claim claims has the advantage that the double-acting hydraulic bushing can be delivered to a tool manufacturer as a semi-finished product for grinding to its tolerance and for use in various types of holders.

Claims (1)

1. 0 15 20 25 30 '3 504 381 PATENTKRAV Hydraulisk bussning (1) för att mottage och fasthålla ett bearbetningsverktyg varvid håligheten (2) för att mottaga ett bearbetningsverktyg företrädesvis är bottenförsett och oflexibelt varvid hålighetens (2) innervägg är flexibelt radiellt genom ett rörformigt utrymme (10) innanför nämnda innervägg och vilket rörformiga utrymme kan sträcka sig ut- över hålrummets (2) längd och vilket utrymme (10) innehåller ett tryckmedium påverkbart av en trycksättningsanordning (3,4,5) med kolv (4), som företrädesvis innehåller en ax- iellt förskjutbar enhet (S) och som lämpligen utnyttjar ett gängarrangemang k ä n n e t e c k n a d därav, att nämnda bussning (1) är anordnad i ena ändan av en stångliknande kropp, vars andra ända har karaktären av en tapp (6) som är avsedd att införas och fästas i ett hål till en hållaredel (8) som överför ro- tationsrörelse till kroppen och vilken innehåller trycksätt- ningsanordning (3,4,5) vilken är påverkbar från tappens ände och att tappen har ett rörformigt utrymme (13) stående i förbindelse med nämnda trycksättningsanordning (3,4,5) varvid utrymmets (13) yttervägg är flexibel och dess utsida utgör tappens (6) yttervägg. Hydraulisk bussning enligt patentkrav 1, k ä n n e t e c k n a d därav, att håligheten (2) står i i förbindelse med en eller flera kylkanaler (7), som går genom tappdelen (6) och vid sidan om trycksättningsanord- ningen (3,4,5) och som har förbindelse med kylmediatillopp genom hållaredelen (8).A hydraulic bushing (1) for receiving and holding a machining tool, the cavity (2) for receiving a machining tool preferably being bottomed and inflexible, the inner wall of the cavity (2) being flexibly radially through a tubular space (10) inside said inner wall and which tubular space can extend beyond the length of the cavity (2) and which space (10) contains a pressure medium actuatable by a pressurizing device (3,4,5) with piston (4), which preferably contains an axially displaceable unit (S) and which suitably utilizes a thread arrangement characterized in that said bushing (1) is arranged at one end of a rod-like body, the other end of which has the character of a pin (6) which is intended to be inserted and attached in a hole to a holding part (8) which transmits rotational movement to the body and which contains a pressurizing device (3,4,5) which is actuatable from the end of the pin e and that the pin has a tubular space (13) communicating with said pressurizing device (3,4,5), the outer wall of the space (13) being flexible and its outside constituting the outer wall of the pin (6). Hydraulic bushing according to claim 1, characterized in that the cavity (2) communicates with one or more cooling channels (7), which pass through the pin part (6) and next to the pressurizing device (3,4,5) and which is connected to coolant inlet through the holder part (8).
SE9404172A 1994-04-25 1994-12-01 Double acting hydraulic bushing SE504381C2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE9404172A SE504381C2 (en) 1994-04-25 1994-12-01 Double acting hydraulic bushing
AU24220/95A AU2422095A (en) 1994-04-25 1995-04-07 Hydraulic bushing with axially displaceable pressurizing means at the rear of the bushing
PCT/SE1995/000381 WO1995029029A1 (en) 1994-04-25 1995-04-07 Hydraulic bushing with axially displaceable pressurizing means at the rear of the bushing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9401395A SE504380C2 (en) 1994-04-25 1994-04-25 Hydraulic bushing
SE9404172A SE504381C2 (en) 1994-04-25 1994-12-01 Double acting hydraulic bushing

Publications (3)

Publication Number Publication Date
SE9404172D0 SE9404172D0 (en) 1994-12-01
SE9404172L SE9404172L (en) 1995-10-26
SE504381C2 true SE504381C2 (en) 1997-01-27

Family

ID=26662041

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9404172A SE504381C2 (en) 1994-04-25 1994-12-01 Double acting hydraulic bushing

Country Status (3)

Country Link
AU (1) AU2422095A (en)
SE (1) SE504381C2 (en)
WO (1) WO1995029029A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE510401C2 (en) * 1997-01-28 1999-05-17 Etp Transmission Ab Hydraulic precision mandrel
DE202004005321U1 (en) * 2004-04-03 2005-08-11 Kennametal Inc. Hydraulic expansion chuck
SE527753C2 (en) * 2004-10-21 2006-05-30 Etp Transmission Ab Hydraulic friction belt with adjusting means for the amount of pressure medium
DE102019209732A1 (en) * 2019-07-03 2021-01-07 Gühring KG Hydraulic chucks
DE102019215695A1 (en) 2019-10-11 2021-04-15 Kennametal Inc. Hydraulic tool holder and sealing piston for such

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2963298A (en) * 1958-04-16 1960-12-06 Scully Jones & Co Hydraulically expanding thin walled tools
US3130978A (en) * 1961-07-31 1964-04-28 Ingersoll Milling Machine Co Expansible mandrel
US3250542A (en) * 1964-05-04 1966-05-10 Erickson Tool Co Hydraulic chucks and arbors
US3731942A (en) * 1970-09-30 1973-05-08 Buck Tool Co Hydraulically actuated tool collet
US3770287A (en) * 1972-01-13 1973-11-06 Positrol Inc Hydraulically controlled holding device
DE3417641A1 (en) * 1984-05-12 1985-11-14 Manfred 6980 Wertheim König HYDRAULIC TENSION ELEMENT WITH BALANCE

Also Published As

Publication number Publication date
AU2422095A (en) 1995-11-16
SE9404172L (en) 1995-10-26
WO1995029029A1 (en) 1995-11-02
SE9404172D0 (en) 1994-12-01

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Legal Events

Date Code Title Description
NUG Patent has lapsed