WO1996026031A1 - Device for carrying out mechanical tooling of a valve seat - Google Patents
Device for carrying out mechanical tooling of a valve seat Download PDFInfo
- Publication number
- WO1996026031A1 WO1996026031A1 PCT/SE1996/000021 SE9600021W WO9626031A1 WO 1996026031 A1 WO1996026031 A1 WO 1996026031A1 SE 9600021 W SE9600021 W SE 9600021W WO 9626031 A1 WO9626031 A1 WO 9626031A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tool
- support
- pillar
- wing
- arrangement
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B15/00—Machines or devices designed for grinding seat surfaces; Accessories therefor
- B24B15/02—Machines or devices designed for grinding seat surfaces; Accessories therefor in valve housings
- B24B15/03—Machines or devices designed for grinding seat surfaces; Accessories therefor in valve housings using portable or mobile machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/02—Milling surfaces of revolution
- B23C3/05—Finishing valves or valve seats
- B23C3/051—Reconditioning of valve seats
- B23C3/053—Reconditioning of valve seats having means for guiding the tool carrying spindle
- B23C3/056—Reconditioning of valve seats having means for guiding the tool carrying spindle for taps or valves
Definitions
- the present invention concerns an arrangement for machining a valve seat in a valve housing having a circular opening which is concentric with the seat and about which is disposed a flat annular surface, the arrangement comprising a support, disposed so as to be centred relative to the opening and secured with the valve housing, and a tool pillar which is connected to the support and which, at its distal end, is provided with a machining tool, the support being arranged such that in a direction which, when the arrangement is in use, is perpendicular to the annular surface, it holds the tool pillar such that it can be adjusted in this direction, and the tool is arranged so as to rotate about the tool pillar.
- the support for centring the tool pillar comprises a cone, which is displaceable along the tool pillar and whose tip is directed downwards, and horizontal jaws which co ⁇ operate with the conical surface of the cone and which are disposed such that, when the cone moves downwards, they are pressed with very great force against the circular opening in the valve housing in order thus to bring about the desired centring.
- the machining tool has to cooperate with the opening which is delimited by the valve seat. This obviously gives rise to serious restrictions in terms of performance of the machining tool.
- a further disadvantage is that the cone and jaws with holders therefor render it substantially more difficult to inspect the interior of the valve when the valve seat is being machined.
- the support is arranged so as to be secured to the valve housing by means of a mounting plate, or a yoke as in the case of the latter publication.
- the plate or yoke is secured in different ways depending on the design of the valve housing. If the housing is constructed with screws, they can naturally be used but this assumes that the plate has been provided with bores located such that they match the location of the screws. This presents problems if the instrument is to be used for different valve sizes, in particular if it is considered that the tool pillar below the instrument has to be located exactly in the centre of the opening. The instrument can even be secured by means of chains and belts but this evidently involves a serious risk of unsatisfactory machining results.
- a difficult problem is that the machining tool wears down comparatively rapidly, such that the arrangement has to be disconnected from the valve housing so that the tool can be changed. This in turn means that, when the tool has been changed, the arrangement has to be re-aligned accurately relative to the housing and the part thereof to be machined. It is awkward and time-consuming to bring about this re ⁇ alignment with the necessary degree of accuracy, in particular as the known centring and securing members generally cover the entire opening in the housing, which makes it difficult to see thereinto.
- the object of the present invention is to provide an arrangement of the initially mentioned type which enables the above-mentioned disadvantages to be overcome.
- the support comprises firstly a main part with three wings which are uniformly distributed about the tool pillar, in order to bring about at least the centring, and each of which comprises a first wing part, which is secured to the main part and has at least a first sliding surface inclined towards the tool pillar, and a second wing part which is operatively connected to the first wing part such that the wing parts can slide relative to each other along the sliding surface, and secondly members for detachably securing the wing parts relative to each other and the support relative to the valve housing.
- FIG. 1 generally designates a valve housing of a type which has a valve seat la, which is formed by the end of a tubular body lb, which is rigidly welded in the housing 1.
- the valve housing 1 is formed with a tubular sleeve lc which is coaxial with the seat la and which has a circular opening Id surrounded by a flat annular surface le.
- the seat surface la may require machining or the tubular body lb may require changing, the body having to be released from the housing 1 as a result of a weld seam connecting these parts having to be ground away.
- the arrangement comprises a support 2 which bears a tool pillar 3 which at its outer end is provided with a machining tool.
- a machining tool In the embodiment shown, this is a grinding wheel 4 but it can also be a steel cutter, as explained below.
- the support is disposed so as to rest on the annular surface le, whereby its position in a horizontal plane is accurately determined.
- the tool pillar 3 extends perpendicular to the plane determined by the annular surface le.
- the support 2 comprises a main part with three wings disposed uniformly about the pillar 3.
- Each of these wings comprises a first wing part 2a which is secured to the main part and which has a continuous elongate opening 2al whose delimiting surfaces form sliding surfaces for a second wing part 2b. This is formed by members for securing the wing parts 2a, 2b to each other and for securing the second wing part 2b relative to the housing.
- the second wing part 2b has two lugs 2b 1, between which the first wing part 2a is inserted, and a threaded bolt 2b2 which can be tightened is passed through the elongate opening 2al in the first wing part 2a such that it can slide along the sliding surfaces.
- the securing members of the second wing part 2b are of the screw-clamp type of construction with a backing device 2b3, which is to engage about the edge of the opening Id, and a clamp screw 2b5 which can be moved by a knob 2b4.
- the tool pillar 3 can be raised and lowered relative to the support and can be adjusted relative thereto by means of an adjusting screw 5. Rough adjustment can be carried out with a bush 11 with a locking screw which can be actuated by means of an arm 1 la.
- the tool pillar 3 has at its outer end members 6 arranged for support against the inner delimiting surface of the tubular body lb and comprising a disc 6a directed towards the tool pillar 3 and provided with three journals 6b which can be adjusted such that they can be fitted to rest against the delimiting surface.
- the grinding wheel 4 is operatively connected to a co ⁇ ressed air motor 7 which is disposed to drive the grinding wheel 4 such that it rotates about its own axis.
- the compressed air is supplied to the motor 7 via a channel inside the tool pillar 3 to which a co ⁇ ressed air hose 8 is connected.
- a ft ⁇ ther co ⁇ ressed air hose 9 is connected to a co ⁇ ressed air motor 10 disposed so as to rotate the tool pillar 3 about its own axis.
- a grinding wheel does not per se give rise to lateral forces which would require the use of the support member 6 but this part is certainly required if the machining tool used is a steel cutter. Such a tool is used, for example, when a valve seat is rough-cut.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU48518/96A AU4851896A (en) | 1995-02-20 | 1996-01-12 | Device for carrying out mechanical tooling of a valve seat |
EP96904401A EP0810911A1 (en) | 1995-02-20 | 1996-01-12 | Device for carrying out mechanical tooling of a valve seat |
US08/899,962 US5931728A (en) | 1995-02-20 | 1996-01-12 | Device for carrying out mechanical tooling of a valve seat |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9500605-2 | 1995-02-20 | ||
SE9500605A SE509761C2 (en) | 1995-02-20 | 1995-02-20 | Apparatus for performing mechanical machining of a valve seat |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996026031A1 true WO1996026031A1 (en) | 1996-08-29 |
Family
ID=20397280
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1996/000021 WO1996026031A1 (en) | 1995-02-20 | 1996-01-12 | Device for carrying out mechanical tooling of a valve seat |
Country Status (6)
Country | Link |
---|---|
US (1) | US5931728A (en) |
EP (1) | EP0810911A1 (en) |
CN (1) | CN1174528A (en) |
AU (1) | AU4851896A (en) |
SE (1) | SE509761C2 (en) |
WO (1) | WO1996026031A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103072018A (en) * | 2013-01-11 | 2013-05-01 | 吴忠仪表有限责任公司 | Turning device for main valve body of special ball valve |
CN104084764A (en) * | 2014-06-25 | 2014-10-08 | 天津国际机械有限公司 | Process for processing large-diameter inlet ball valve and special mold thereof |
WO2015197570A1 (en) * | 2014-06-25 | 2015-12-30 | Siemens Aktiengesellschaft | Device for radially supporting and damping a rod-like component in a cavity and method for mounting the device |
CN108655879A (en) * | 2018-05-15 | 2018-10-16 | 芜湖杰诺科技有限公司 | A kind of valve end face fixing side grinding device |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030093402A (en) * | 2002-06-03 | 2003-12-11 | 백수곤 | The Method and Apparatus of Valve Lapping |
DE102005028368A1 (en) * | 2005-06-20 | 2006-12-28 | MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG | Machining tool for valve guides and seats has second tool part divided into two sections, one of hard metal, other of more elastic material |
CA2542630A1 (en) * | 2006-04-10 | 2007-10-10 | Enbridge Gas Distribution Inc. | Service tee cutting apparatus and abandonment method |
US7871312B2 (en) * | 2007-10-30 | 2011-01-18 | Wirkkala Matthew T | Hydrant grinding arrangement |
CN101856728B (en) * | 2010-05-05 | 2012-11-14 | 铜陵市力通机械制造有限公司 | Efficient valve body processing equipment |
WO2012096618A1 (en) * | 2011-01-11 | 2012-07-19 | Larslap Ab | Method and device for determining position and orientation of a valve seat |
CN103737454A (en) * | 2013-11-29 | 2014-04-23 | 成都欧浦特控制阀门有限公司 | Valve grinding device capable of performing positioning |
CN115446335A (en) * | 2022-08-18 | 2022-12-09 | 中核核电运行管理有限公司 | A modularization lathe for online processing of main steam relief valve |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE240420C (en) * | ||||
DE211595C (en) * | ||||
US742313A (en) * | 1902-06-07 | 1903-10-27 | Appbau Anstalt Ludwigsburg G M B H | Device for dressing valve-seats. |
US1658141A (en) * | 1923-07-23 | 1928-02-07 | Mortimer B Skinner | Valve-reseating tool |
US4715149A (en) * | 1986-08-25 | 1987-12-29 | Kelsey John R | Steady rest for valve grinding apparatus |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4169487A (en) * | 1977-06-20 | 1979-10-02 | Watson Robert L | Globe-valve locking apparatus for valve lapping |
US4346728A (en) * | 1980-07-28 | 1982-08-31 | Anchor/Darling Industries, Inc. | Automated dual mode valve actuator |
US4338961A (en) * | 1980-08-07 | 1982-07-13 | Anchor/Darling Valve Company | Valve for handling hot caustic alumina solution with provision for grinding |
-
1995
- 1995-02-20 SE SE9500605A patent/SE509761C2/en not_active IP Right Cessation
-
1996
- 1996-01-12 EP EP96904401A patent/EP0810911A1/en not_active Withdrawn
- 1996-01-12 AU AU48518/96A patent/AU4851896A/en not_active Abandoned
- 1996-01-12 US US08/899,962 patent/US5931728A/en not_active Expired - Fee Related
- 1996-01-12 WO PCT/SE1996/000021 patent/WO1996026031A1/en not_active Application Discontinuation
- 1996-01-12 CN CN96191938.8A patent/CN1174528A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE240420C (en) * | ||||
DE211595C (en) * | ||||
US742313A (en) * | 1902-06-07 | 1903-10-27 | Appbau Anstalt Ludwigsburg G M B H | Device for dressing valve-seats. |
US1658141A (en) * | 1923-07-23 | 1928-02-07 | Mortimer B Skinner | Valve-reseating tool |
US4715149A (en) * | 1986-08-25 | 1987-12-29 | Kelsey John R | Steady rest for valve grinding apparatus |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103072018A (en) * | 2013-01-11 | 2013-05-01 | 吴忠仪表有限责任公司 | Turning device for main valve body of special ball valve |
CN104084764A (en) * | 2014-06-25 | 2014-10-08 | 天津国际机械有限公司 | Process for processing large-diameter inlet ball valve and special mold thereof |
WO2015197570A1 (en) * | 2014-06-25 | 2015-12-30 | Siemens Aktiengesellschaft | Device for radially supporting and damping a rod-like component in a cavity and method for mounting the device |
CN108655879A (en) * | 2018-05-15 | 2018-10-16 | 芜湖杰诺科技有限公司 | A kind of valve end face fixing side grinding device |
CN108655879B (en) * | 2018-05-15 | 2020-05-22 | 芜湖杰诺科技有限公司 | Fixed side grinding device of terminal surface for valve |
Also Published As
Publication number | Publication date |
---|---|
US5931728A (en) | 1999-08-03 |
SE9500605D0 (en) | 1995-02-20 |
CN1174528A (en) | 1998-02-25 |
EP0810911A1 (en) | 1997-12-10 |
SE9500605L (en) | 1996-08-21 |
AU4851896A (en) | 1996-09-11 |
SE509761C2 (en) | 1999-03-08 |
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