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WO2003061901A1 - Dispositif d'etalonnage de machine - Google Patents

Dispositif d'etalonnage de machine Download PDF

Info

Publication number
WO2003061901A1
WO2003061901A1 PCT/GB2003/000323 GB0300323W WO03061901A1 WO 2003061901 A1 WO2003061901 A1 WO 2003061901A1 GB 0300323 W GB0300323 W GB 0300323W WO 03061901 A1 WO03061901 A1 WO 03061901A1
Authority
WO
WIPO (PCT)
Prior art keywords
scale
readhead
carrying member
machine
alignment
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.)
Ceased
Application number
PCT/GB2003/000323
Other languages
English (en)
Inventor
Mark Adrian Vincent Chapman
Andrew Michael Bailey
Raymond John Chaney
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.)
Renishaw PLC
Original Assignee
Renishaw PLC
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 Renishaw PLC filed Critical Renishaw PLC
Publication of WO2003061901A1 publication Critical patent/WO2003061901A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/22—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
    • 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
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/22—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
    • B23Q17/2233—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work for adjusting the tool relative to the workpiece
    • B23Q17/2266—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work for adjusting the tool relative to the workpiece of a tool relative to a workpiece-axis
    • 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
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/24—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves
    • 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
    • B23Q3/18—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for positioning only
    • B23Q3/186—Aligning devices

Definitions

  • a known device for performing such a calibration operation is disclosed in US Patent No. 4,435,905.
  • the device comprises an elongate telescopic bar provided with a ball at each end.
  • each of the balls is retained in a socket provided on the toolholder and the workholder respectively and the toolholder is then driven in a circular path about the centre of the ball retained in the socket of the workholder.
  • a single axis transducer provided on the bar measures any variation in the centre to centre spacing of the balls, and thus determines the extent to which the toolholder path varies from a circular path.
  • a first aspect of the invention provides apparatus for aligning a scale carrying member in a desired plane of a machine, said machine including first and second parts movable with respect to one another, said scale carrying member being rotatable about at least one axis and being mountable on the first machine part; the apparatus comprising: a location device mountable on the second machine part ; wherein the location device on the second machine part may be brought into register with the scale carrying member in at least one location such that the scale carrying member rotates about the at least one axis until it is aligned with the plane defined by the at least one location of register between the location device and the scale carrying member.
  • the scale carrying member is rotatable about a first axis, and includes first and second positioning features located on the scale carrying member, said first positioning feature being aligned with said first axis; whereby the location device may be positioned at the first positioning feature and then moved to a subsequent location which is positioned with respect to said first positioning feature along a second axis at an angle to said first axis; and whereby the scale carrying member may be rotated about said first axis until the second positioning feature is at the subsequent location, resulting in the scale carrying member being aligned with the plane of the first and second axes.
  • one of the location device and the first positioning feature is a recess and the other is a protrusion.
  • the device is brought into contact with the scale carrying member in one location and wherein the surface of the device in contact with the scale carrying member has plane defining means, such that the scale carrying member may be aligned with the plane defined by the plane defining means by rotating the scale carrying member until it is fully in contact with the plane defining means.
  • adjustable connection means are provided to connect the readhead to the second part of the machine, such that the readhead and second part of the machine may be connected together whilst the orientation is at least part defined by the reference location and wherein the adjustable connection means may be locked once they are connected to maintain the orientation of the readhead.
  • Fig 12 is an isometric view of the sixth embodiment of the invention.
  • the orientation of the readhead about the X,Y and Z axes are all defined by the kinematic location when it is in the docking station. In addition the distance between the scale and readhead along the Z axis (rideheight) is also defined.
  • the readhead 18 is provided with a vertically extending post 70, perpendicular to the lower surface of the readhead.
  • a probe is mounted on the machine arm and brought into contact with the post of the readhead to determine its position. This may be done by touching the readhead a certain number of times, for example three .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

L'invention concerne un appareil conçu pour aligner une plaque dans un plan donné d'une machine, qui comprend une plaque (44) tournant autour d'au moins un axe (42), que l'on peut monter sur une première partie de machine (40), un dispositif de localisation (48) que l'on peut monter sur une seconde partie de machine (47), le dispositif de localisation sur la seconde partie de machine pouvant être amené en correspondance avec la plaque en au moins un emplacement (57, 46) de façon que la plaque tourne autour de l'axe jusqu'à ce qu'elle soit alignée avec le plan défini par au moins un emplacement de correspondance entre le dispositif de localisation et la plaque. La plaque peut tourner autour d'un ou de deux axes et peut être pourvue d'une échelle (16) et une tête de lecture (18) peut être montée sur la seconde partie de machine. On peut prévoir une station d'ancrage (20) pour aligner la tête de lecture avec l'échelle pendant qu'elle est liée à la seconde partie de la machine.
PCT/GB2003/000323 2002-01-26 2003-01-27 Dispositif d'etalonnage de machine Ceased WO2003061901A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0201840A GB0201840D0 (en) 2002-01-26 2002-01-26 Calibration device for machine
GB0201840.6 2002-01-26

Publications (1)

Publication Number Publication Date
WO2003061901A1 true WO2003061901A1 (fr) 2003-07-31

Family

ID=9929825

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2003/000323 Ceased WO2003061901A1 (fr) 2002-01-26 2003-01-27 Dispositif d'etalonnage de machine

Country Status (2)

Country Link
GB (1) GB0201840D0 (fr)
WO (1) WO2003061901A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4435905A (en) * 1982-03-15 1984-03-13 The United States Of America As Represented By The United States Department Of Energy Telescoping magnetic ball bar test gage
DE4105433A1 (de) * 1991-02-21 1992-09-03 Heidenhain Gmbh Dr Johannes Einrichtung zur konturformpruefung an einer bearbeitungs- oder messmaschine
WO2002004890A1 (fr) * 2000-07-12 2002-01-17 Renishaw Plc Alignement des constituants optiques d'un systeme de mesure optique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4435905A (en) * 1982-03-15 1984-03-13 The United States Of America As Represented By The United States Department Of Energy Telescoping magnetic ball bar test gage
DE4105433A1 (de) * 1991-02-21 1992-09-03 Heidenhain Gmbh Dr Johannes Einrichtung zur konturformpruefung an einer bearbeitungs- oder messmaschine
WO2002004890A1 (fr) * 2000-07-12 2002-01-17 Renishaw Plc Alignement des constituants optiques d'un systeme de mesure optique

Also Published As

Publication number Publication date
GB0201840D0 (en) 2002-03-13

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