SE2150705A1 - A steady rest, a machining tool and use thereof - Google Patents

A steady rest, a machining tool and use thereof

Info

Publication number
SE2150705A1
SE2150705A1 SE2150705A SE2150705A SE2150705A1 SE 2150705 A1 SE2150705 A1 SE 2150705A1 SE 2150705 A SE2150705 A SE 2150705A SE 2150705 A SE2150705 A SE 2150705A SE 2150705 A1 SE2150705 A1 SE 2150705A1
Authority
SE
Sweden
Prior art keywords
steady rest
arm
driving connection
rest arm
roller
Prior art date
Application number
SE2150705A
Other versions
SE544789C2 (en
Inventor
Hannes Olsson
Martin Larsson
Original Assignee
Atlings Maskf 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 Atlings Maskf Ab filed Critical Atlings Maskf Ab
Priority to SE2150705A priority Critical patent/SE2150705A1/en
Priority to PCT/SE2022/050521 priority patent/WO2022255924A1/en
Publication of SE544789C2 publication Critical patent/SE544789C2/en
Publication of SE2150705A1 publication Critical patent/SE2150705A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/72—Auxiliary arrangements; Interconnections between auxiliary tables and movable machine elements
    • B23Q1/76—Steadies; Rests
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B25/00—Accessories or auxiliary equipment for turning-machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B13/00—Arrangements for automatically conveying or chucking or guiding stock
    • B23B13/12—Accessories, e.g. stops, grippers
    • B23B13/126—Supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/10—Auxiliary devices, e.g. bolsters, extension members
    • 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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B24B41/065—Steady rests

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Units (AREA)

Abstract

The invention relates to a steady rest (1) for supporting an elongated workpiece (2), comprising a housing (3), an axially movable middle arm (4) driven by a power means and two pivotally movable outer arms (5, 6) arranged therein. An arrangement provides a separate driving connection for the outer arms (5, 6) with the middle arm (4) by acting on a lever (5c, 6c) for pivoting the outer arms towards the workpiece. The arrangement comprises for each driving connection two rollers (9a-b, 10a-b) arranged on a lateral extension (11a-b) of the middle arm (4), arranged to roll on a cam (12a-b, 13a-b) arranged on the lever (5c, 6c) of the respective outer arm. The invention also relates to a machining tool provided with such a steady rest as well as use thereof.

Claims (6)

Claims
1. A steady rest (1) for firmly supporting an elongated workpiece (2), comprising a stationary housing (3), a middle steady rest arm (4) arranged in the housing (3), - a power means configured to move the middle steady rest arm (4) with respect to the housing (3) in an axial direction towards a said workpiece (2), - two outer steady rest arms (5, 6) pivotally connected to the housing (3) around axes being perpendicular to said axial direction and each having a lever (5c, 6c) rigidly connected thereto, and - an arrangement configured to provide a separate driving connection for each of the outer steady rest arms (5, 6) with the middle steady rest arm (4) by acting on said lever (5c, 6c), the arrangement comprising for each driving connection a roller (9a-b, 10a-b) configured to roll along a cam (12a-b, 13a-b) acting as a control track as the middle steady rest arm (4) is moved in the axial direction for pivoting the outer steady rest arms (5, 6) towards each other and towards the workpiece (2), wherein the arrangement comprises for each said driving connection two said rollers (9a-b, 10a-b) arranged to roll on a said cam (12a-b, 13a-b) for pivoting the outer steady rest arm (5, 6) in separate consecutive portions of the movement of the middle steady rest arm (4) towards the workpiece (2), characterized in: - that the middle steady rest arm (4) has two lateral extensions (11a-b), each having said two rollers (9a-b, 10a- b) of one of the driving connections arranged thereon and said cam (12a-b, 13a-b) of each driving connection is arranged on the lever (5c, 6c) of the respective outer steady rest arm (5, 6); and - that the arrangement has for each driving connection two cams (12a-b, 13a-b) with control tracks arranged on the lever (5c, 6c) and a first (9a, 10a) of the rollers is configured to roll along a first cam (12a, 12b) in a first portion of movement of the middle steady rest arm (4) in said axial direction towards the workpiece (2) and a second (9b, 10b) of the rollers is configured to roll along a second cam (13a, 13b) in a second portion of said movement following upon the first portion.
2. _ A steady rest (1) according to claim 1, characterized in that a first cam (12a, 12b) of each driving connection is arranged on the lever (5c, 6c) to, at an outer end thereof remote from the pivot axis of the respective outer steady rest arm (5, 6), be closer to the middle steady rest arm (4) than a second cam (13a, 13b) of the same driving connection so as to be reached firstly by the first roller (9a, 10a) by said movement of the middle steady rest arm (4) in the axial direction.
3. A steady rest (1) according to claim 2, characterized in that the first cam (12a, 12b) of each driving connection is arranged on the lever (5, 6) to be closer to the middle steady rest arm (4) than the second cam (13a, 13b) of the same driving connection along the entire extensions of the guide tracks of the cams (12a-b, 13a-b).
4. A steady rest (1) according to any of the preceding claims, characterized in that each driving connection has the first roller (9a, 10a) thereof arranged closer to a center axis of the middle steady rest arm (4) than the second roller (9b, 10b).
5. A steady rest (1) according to claim 4, characterized in that the smallest distance of the rotation axis of the second roller (9b, 10b) to a center axis of the middle steady rest arm (4) exceeds the smallest distance of the rotation axis of the first roller (9a, 10a) to said center axis by at least 10%, at least 20%, at least 30% or at least 40%.
6. A steady rest (1) according to any of the preceding claims, characterized in that each driving connection has the first roller (9a, 10a) thereof arranged at a distance to and before the second roller (9b, 10b) as seen in said axial direction of movement of the middle steady rest arm (4). _ A steady rest (1) according to claim 6, characterized in that the distance between the rotation axis of the first roller (9a, 10a) and the rotation axis of the second roller (9b, 10b) as seen in said axial direction of movement of the middle steady rest arm (4) exceeds 5%, or 10%, of the total length of the middle steady rest arm (4) extending in said axial direction. _ A steady rest (1) according to any of the preceding claims, characterized in that the first (9a, 10a) and second (9b, 10b) rollers of each driving connection are arranged on the respective lateral extension (11a-b) mutually offset in the direction of the extension of their axes of rotation and the first (12a-b) and second (13a-b) cams of the same driving connection are arranged on the respective lever (5, 6) correspondingly offset in said direction and configured to be contacted by the first (9a, 10a) and second (9b, 10b) rollers by movement of the middle steady rest arm (4) in the axial direction, respectively. A steady rest (1) according to any of the preceding claims, characterized in that the two lateral extensions (11a-b) of the middle steady rest arm (4) are integral parts of the middle steady rest arm (4). 10.A steady rest (1) according to any of the claims 1-8, characterized in that the lateral extensions (11a-b) of the middle steady rest arm (4) are parts of a body configured to be rigidly secured to the middle steady rest arm (4).A steady rest (1) according to any of the preceding claims, characterized in that each steady rest arm (4, 5, 6) is provided with a roller (4a, 5a, 6a) at its outer free end thereof configured to abut a workpiece (2) when this is firmly supported by the steady rest. A steady rest (1) according to any of the preceding claims, characterized in that the power means comprises a hydraulic motor (7) and an actuation piston (8) operable by the hydraulic motor (7) to move the middle steady rest arm (4) in the axial direction. Machining tool for cutting machining of elongated workpieces (2), especially a lathe, characterized in that it is provided with a steady rest (1) according to any of the claims 1-12 for firmly supporting the workpieces to be processed. Use of a steady rest (1) according to any of the claims 1-12 for firmly supporting a workpiece (2) during cutting machining by a machining tool, especially a lathe.
SE2150705A 2021-06-02 2021-06-02 A steady rest, a machining tool and use thereof SE2150705A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE2150705A SE2150705A1 (en) 2021-06-02 2021-06-02 A steady rest, a machining tool and use thereof
PCT/SE2022/050521 WO2022255924A1 (en) 2021-06-02 2022-05-30 Steady rest, machining tool comprising such a steady rest and use of such a steady rest

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2150705A SE2150705A1 (en) 2021-06-02 2021-06-02 A steady rest, a machining tool and use thereof

Publications (2)

Publication Number Publication Date
SE544789C2 SE544789C2 (en) 2022-11-15
SE2150705A1 true SE2150705A1 (en) 2022-11-15

Family

ID=83996963

Family Applications (1)

Application Number Title Priority Date Filing Date
SE2150705A SE2150705A1 (en) 2021-06-02 2021-06-02 A steady rest, a machining tool and use thereof

Country Status (2)

Country Link
SE (1) SE2150705A1 (en)
WO (1) WO2022255924A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987001320A1 (en) * 1985-09-03 1987-03-12 Welin Berger Guy Self-centering steady rest
EP0440590A1 (en) * 1990-01-31 1991-08-07 WELIN-BERGER, Guy A steady rest
JPH0645305Y2 (en) * 1988-05-12 1994-11-24 豊和工業株式会社 Work rest
EP2583786A1 (en) * 2011-10-20 2013-04-24 Atlings Maskinfabrik AB Steady rest
EP3254801A1 (en) * 2016-06-09 2017-12-13 SMW-AUTOBLOK Spannsysteme GmbH Stationary support with a force measuring device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS645305Y2 (en) * 1980-03-13 1989-02-09

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987001320A1 (en) * 1985-09-03 1987-03-12 Welin Berger Guy Self-centering steady rest
JPH0645305Y2 (en) * 1988-05-12 1994-11-24 豊和工業株式会社 Work rest
EP0440590A1 (en) * 1990-01-31 1991-08-07 WELIN-BERGER, Guy A steady rest
EP2583786A1 (en) * 2011-10-20 2013-04-24 Atlings Maskinfabrik AB Steady rest
EP3254801A1 (en) * 2016-06-09 2017-12-13 SMW-AUTOBLOK Spannsysteme GmbH Stationary support with a force measuring device

Also Published As

Publication number Publication date
SE544789C2 (en) 2022-11-15
WO2022255924A1 (en) 2022-12-08

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