USRE35510E - Probe head with indexing mechanism - Google Patents

Probe head with indexing mechanism Download PDF

Info

Publication number
USRE35510E
USRE35510E US08/389,785 US38978595A USRE35510E US RE35510 E USRE35510 E US RE35510E US 38978595 A US38978595 A US 38978595A US RE35510 E USRE35510 E US RE35510E
Authority
US
United States
Prior art keywords
rotor
support
iaddend
iadd
probe head
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.)
Expired - Lifetime
Application number
US08/389,785
Inventor
David R. McMurtry
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 Metrology Ltd
Original Assignee
Renishaw Metrology Ltd
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 Metrology Ltd filed Critical Renishaw Metrology Ltd
Priority to US08/389,785 priority Critical patent/USRE35510E/en
Application granted granted Critical
Publication of USRE35510E publication Critical patent/USRE35510E/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
    • B23Q16/02—Indexing equipment
    • B23Q16/08—Indexing equipment having means for clamping the relatively movable parts together in the indexed position
    • B23Q16/10—Rotary indexing
    • B23Q16/102—Rotary indexing with a continuous drive
    • 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
    • B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
    • B23Q16/02—Indexing equipment
    • B23Q16/08—Indexing equipment having means for clamping the relatively movable parts together in the indexed position
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/004—Measuring arrangements characterised by the use of mechanical techniques for measuring coordinates of points
    • G01B5/008—Measuring arrangements characterised by the use of mechanical techniques for measuring coordinates of points using coordinate measuring machines
    • G01B5/012—Contact-making feeler heads therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/14—Rotary member or shaft indexing, e.g., tool or work turret
    • Y10T74/1476—Rotary member or shaft indexing, e.g., tool or work turret with means to axially shift shaft

Definitions

  • the present invention relates to a probe head used on a coordinate positioning machine to orient a touch trigger probe (for example) relative to the movable arm (or quill) of the machine.
  • the coordinate positioning machine may e.g. be either a coordinate measuring machine or a machine tool.
  • a probe head for orienting a probe relative to the quill of a machine with two degrees of rotational freedom.
  • a probe head comprises a support, which is connectable to the quill of a machine, and a pair of serially mounted rotors, each of which is engageable in, and may rotate between a plurality of indexed positions.
  • a probe is connected to the "free" rotor, and is oriented relative to the quill by rotation of one or both of the rotors about their respective axes.
  • Indexing of position between two relatively rotating parts is provided by a ring of balls on one of the parts, and three seating members on the other part, each of which seats in the convergent surfaces provided by an adjacent pair of balls.
  • each rotor is kinematically supported; this provides maximum positional repeatability of the probe at each indexed position.
  • EP 0142373 discloses a system which provides releasable kinematic engagement of a probe in order to facilitate probe change.
  • a system for interchanging a number of probes upon an indexing probe head of the type described above, in which each of the probes to be supported on the probe head is mounted to a carrying member which, in use, forms the rotor of the probe head.
  • the present invention provides a probe head for orienting a probe relative to the movable arm of a coordinate positioning machine, comprising:
  • retaining means for releasably retaining the rotor on the support, to enable one rotor to be exchanged for another;
  • driving means for rotating said rotor relative to said support substantially about an axis when said first and second engagement elements are disengaged, thereby to rotate said rotor from one indexed position to another.
  • This aspect of the present invention reduces the number of parts which are coupled and uncoupled during normal operation by utilising the first and second engagement elements for both indexing and probe change functions.
  • each probe required by the machine is connected to a separate rotor, all of which are retained on the machine.
  • a particular inspection cycle requires a change of probe, this is achieved by exchanging rotors.
  • the rotor will be magnetically retained on the support.
  • an axially movable drive dog is engageable with the rotor to uncouple the first and second engagement elements and thus enable rotation of the rotor between indexed locations.
  • FIG. 1 is a section through a probe head according to the present invention
  • FIG. 2 is a section on II--II in FIG. 1;
  • FIG. 3 is a further section through the probe head of the present invention.
  • a probe head 10 comprises a support 12 by which the probe head 10 may be carried on the movable arm, .[.of.]. .Iadd.or .Iaddend.quill of a coordinate positioning machine (such as a coordinate measuring machine or machine tool).
  • a rotor 14, whose purpose is to carry a probe 16 is releasably retained on the support 12 by retaining means in the form of a permanent magnet 18 provided on a drive dog shaft 20 which cooperates with a ferromagnetic element in the form of a further magnet 22 provided on the rotor 14.
  • a first set of engagement elements in the form of three adjacently positioned, equispaced pairs of rollers 24 is provided on the support 12.
  • a plurality of sets of second engagement elements in the form of a ring of balls 26 is provided on the rotor 14; when the rotor 14 is retained on the support 12 by the .Iadd.biasing .Iaddend.action of magnets 18,22, three of the balls 26 seat in the convergent surfaces defined by adjacently positioned pairs of rollers 24.
  • the pairs of rollers 24 are included in a series of electrical circuit (not shown) which is completed when each of a set of three balls 26 seat in the convergent surfaces of adjacently positioned pairs of rollers, thus indicating that the rotor 14 is correctly retained on the support 12.
  • the rotor 14 may be oriented in any one of a plurality of indexed angular positions relative to the support 12 by disengaging each of a set of three balls 26 from the rollers 24, rotating the rotor 14 relative to the support 12, and engaging a further set of three balls 26 with the rollers 24. It is noted that the number of sets of three balls 26 thus determines the number of indexed angular positions which the rotor 14 may adopt relative to the support 12.
  • Disengagement of balls 26 and rollers 24, as shown in FIG. 3, is achieved by axial movement of the drive dog shaft 20 to engage each of three vee-groove detent elements 28 provided on the magnet 18 with three further balls 30 provided on the rotor 14, and subsequently axially displacing the rotor 14 until the balls 26 are moved clear of the convergent surfaces of adjacently positioned pairs of rollers 24.
  • the magnetic attraction between the magnets 18 and 22 ensures that the rotor 14 does not fall off during this operation.
  • Axial movement of the drive dog shaft 20 is actuated by a motor 32, which also rotates the drive dog shaft 20, thereby to orient the rotor 14 in a different indexed angular position.
  • the motor 32 is controlled to retract the drive dog shaft 20 and bring a further set of three balls 26 into engagement with the rollers 24.
  • the motor 32 continues to withdraw the drive dog shaft 20 until the magnets 18,22 lose contact with each other.
  • the magnetic force between the magnets 18,22 is sufficient to ensure the rotor 14 is .Iadd.biased toward and .Iaddend.retained securely upon the support 12 in the new indexed position.
  • the probe 16 may thus be positioned at a plurality of angular indexed locations, at each of which the rotor 14 is kinematically supported on the support 12. The rotor 14 is thus in a stable and repeatable position relative to the support at each of the aforementioned angular positions.
  • the centre point O of the rotor 14 will lie at a fractionally different position relative to the axis A of the drive dog shaft 20. This is a result of the tolerances associated with positioning the ring of balls 26 and the rollers 24.
  • the rotor 14 may thus be described as having a "wandering axis" relative to the support 12; nonetheless for practical purposes the rotor 14 is rotatable about the axis A.
  • the entire rotor 14 is removed from the support 12, and a new rotor is mounted thereon.
  • the dual function of the balls 26 and rollers 24 as both indexing elements and .[.retaining.]. .Iadd.position retention .Iaddend.elements thus serves to eliminate the existing releasable connection between a probe head and a probe.
  • the magnet 18 may be provided at a plurality of positions around the drive dog shaft 20 on the fixed part of the support 12; this eliminates the need to provide a magnet 18 at the end of the drive dog shaft 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

A probe head (10) includes a support (12) by which the probe head is retained on the quill of a coordinate positioning machine, and a rotor (14) which is magnetically retained on the support (12). The rotor (14) is rotatable between a plurality of indexed angular positions provided by a ring or balls (26) and three adjacently positioned pairs of rollers (24). A drive dog shaft (20) is linearly movable to disengage the balls (26) from the rollers (24), and rotatable to rotate the rotor (14) to a new indexed position, whereupon the drive dog shaft (20) is retracted to re-engage a set of three balls (26) with the rollers (24). Exchange of a measuring probe (16) is performed by removing the entire rotor (14), and exchanging it for a further rotor carrying a different measuring probe. The engagement elements provided by rollers (24) and balls (26) thus serve the functions of (a) indexing and (b) repeatably .[.retaining.]. .Iadd.positioning .Iaddend.a rotor (14) on the support (12). This reduces the number of kinematic locations required between the movable arm of the machine and the probe (16) during the course of normal operation of a probe head to which a number of probes (16) are releasably couplable.

Description

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a probe head used on a coordinate positioning machine to orient a touch trigger probe (for example) relative to the movable arm (or quill) of the machine. The coordinate positioning machine may e.g. be either a coordinate measuring machine or a machine tool.
2. Description of Related Art
It is known (from "Probing for Productivity on Coordinate Measuring Machines" RENISHAW) to provide a two-axis motorised probe head for orienting a probe relative to the quill of a machine with two degrees of rotational freedom. Such a probe head comprises a support, which is connectable to the quill of a machine, and a pair of serially mounted rotors, each of which is engageable in, and may rotate between a plurality of indexed positions. A probe is connected to the "free" rotor, and is oriented relative to the quill by rotation of one or both of the rotors about their respective axes. Indexing of position between two relatively rotating parts is provided by a ring of balls on one of the parts, and three seating members on the other part, each of which seats in the convergent surfaces provided by an adjacent pair of balls. Thus, at each of the indexed positions each rotor is kinematically supported; this provides maximum positional repeatability of the probe at each indexed position.
It is often desirable, in order to perform different types of measuring operation, to exchange one probe which is carried by the probe head for another. EP 0142373 discloses a system which provides releasable kinematic engagement of a probe in order to facilitate probe change.
This obviates the need to calibrate the machine each time a given probe is removed and replaced on the machine, in order to determine the position of the probe relative to the quill.
However, in spite of the high positional repeatability of each of the individual kinematic locations formed between the probe and the quill for the purpose of supporting the probe, (i.e. the kinematic location of the probe on the probe head, and the kinematic location of each of the rotors in the probe head), the repeatability of the position of the probe relative to the quill in a given orientation of the probe head over a number of probe-change and/or probe head orienting cycles decreases with the number of kinematic locations formed between the probe and the quill which are coupled and uncoupled in the course of normal operation.
SUMMARY OF THE INVENTION
According to a first aspect of the present invention a system is provided for interchanging a number of probes upon an indexing probe head of the type described above, in which each of the probes to be supported on the probe head is mounted to a carrying member which, in use, forms the rotor of the probe head.
Accordingly, the present invention provides a probe head for orienting a probe relative to the movable arm of a coordinate positioning machine, comprising:
a support by which the probe head is connectable to the arm of the machine;
a rotor for carrying a probe;
retaining means for releasably retaining the rotor on the support, to enable one rotor to be exchanged for another;
indexing means for providing a plurality of indexed angular positions of the rotor relative to the support, comprising a first set of engagement elements provided on one of the rotor and support, and a plurality of sets of second engagement elements provided on the other of the rotor and support, said first set of engagement elements being engageable with each set of said plurality of sets of second engagement elements to provide, at each indexed position, a stable, repeatable rest position of the rotor on the support;
coupling and decoupling means for engaging and disengaging said first set of engagement elements with a set of said second engagement elements; and
driving means for rotating said rotor relative to said support substantially about an axis when said first and second engagement elements are disengaged, thereby to rotate said rotor from one indexed position to another.
This aspect of the present invention reduces the number of parts which are coupled and uncoupled during normal operation by utilising the first and second engagement elements for both indexing and probe change functions.
In use, each probe required by the machine is connected to a separate rotor, all of which are retained on the machine. When a particular inspection cycle requires a change of probe, this is achieved by exchanging rotors.
Preferably, the rotor will be magnetically retained on the support. Preferably, an axially movable drive dog is engageable with the rotor to uncouple the first and second engagement elements and thus enable rotation of the rotor between indexed locations.
BRIEF DESCRIPTION OF DRAWINGS
An embodiment of the invention will now be described, by way of example, and with reference to the accompanying drawings in which:
FIG. 1 is a section through a probe head according to the present invention;
FIG. 2 is a section on II--II in FIG. 1; and
FIG. 3 is a further section through the probe head of the present invention.
DESCRIPTION OF PREFERRED EMBODIMENTS
Referring now to FIGS. 1-3, a probe head 10 comprises a support 12 by which the probe head 10 may be carried on the movable arm, .[.of.]. .Iadd.or .Iaddend.quill of a coordinate positioning machine (such as a coordinate measuring machine or machine tool). A rotor 14, whose purpose is to carry a probe 16, is releasably retained on the support 12 by retaining means in the form of a permanent magnet 18 provided on a drive dog shaft 20 which cooperates with a ferromagnetic element in the form of a further magnet 22 provided on the rotor 14. A first set of engagement elements in the form of three adjacently positioned, equispaced pairs of rollers 24 is provided on the support 12. A plurality of sets of second engagement elements in the form of a ring of balls 26 is provided on the rotor 14; when the rotor 14 is retained on the support 12 by the .Iadd.biasing .Iaddend.action of magnets 18,22, three of the balls 26 seat in the convergent surfaces defined by adjacently positioned pairs of rollers 24. The pairs of rollers 24 are included in a series of electrical circuit (not shown) which is completed when each of a set of three balls 26 seat in the convergent surfaces of adjacently positioned pairs of rollers, thus indicating that the rotor 14 is correctly retained on the support 12.
The rotor 14 may be oriented in any one of a plurality of indexed angular positions relative to the support 12 by disengaging each of a set of three balls 26 from the rollers 24, rotating the rotor 14 relative to the support 12, and engaging a further set of three balls 26 with the rollers 24. It is noted that the number of sets of three balls 26 thus determines the number of indexed angular positions which the rotor 14 may adopt relative to the support 12.
Disengagement of balls 26 and rollers 24, as shown in FIG. 3, is achieved by axial movement of the drive dog shaft 20 to engage each of three vee-groove detent elements 28 provided on the magnet 18 with three further balls 30 provided on the rotor 14, and subsequently axially displacing the rotor 14 until the balls 26 are moved clear of the convergent surfaces of adjacently positioned pairs of rollers 24. The magnetic attraction between the magnets 18 and 22 ensures that the rotor 14 does not fall off during this operation. Axial movement of the drive dog shaft 20 is actuated by a motor 32, which also rotates the drive dog shaft 20, thereby to orient the rotor 14 in a different indexed angular position. Once oriented, the motor 32 is controlled to retract the drive dog shaft 20 and bring a further set of three balls 26 into engagement with the rollers 24. The motor 32 continues to withdraw the drive dog shaft 20 until the magnets 18,22 lose contact with each other. However, the magnetic force between the magnets 18,22 is sufficient to ensure the rotor 14 is .Iadd.biased toward and .Iaddend.retained securely upon the support 12 in the new indexed position. The probe 16 may thus be positioned at a plurality of angular indexed locations, at each of which the rotor 14 is kinematically supported on the support 12. The rotor 14 is thus in a stable and repeatable position relative to the support at each of the aforementioned angular positions.
At each of the indexed angular positions, the centre point O of the rotor 14 will lie at a fractionally different position relative to the axis A of the drive dog shaft 20. This is a result of the tolerances associated with positioning the ring of balls 26 and the rollers 24. The rotor 14 may thus be described as having a "wandering axis" relative to the support 12; nonetheless for practical purposes the rotor 14 is rotatable about the axis A.
When it is desired to exchange the probe 26 for a different type of probe, the entire rotor 14 is removed from the support 12, and a new rotor is mounted thereon. The dual function of the balls 26 and rollers 24 as both indexing elements and .[.retaining.]. .Iadd.position retention .Iaddend.elements thus serves to eliminate the existing releasable connection between a probe head and a probe. In a modification to the present invention, the magnet 18 may be provided at a plurality of positions around the drive dog shaft 20 on the fixed part of the support 12; this eliminates the need to provide a magnet 18 at the end of the drive dog shaft 20.

Claims (16)

I claim:
1. A probe head for orienting a probe relative to .[.the.]. .Iadd.a .Iaddend.movable arm of a coordinate positioning machine, comprising:
a support by which the probe head is connectable to the arm of the machine;
a rotor for carrying a probe;
retaining means for releasably retaining the rotor on the support, to enable one rotor to be exchanged for another;
indexing means for providing a plurality of .Iadd.angularly .Iaddend.indexed .[.angular.]. positions of .[.the.]. .Iadd.said .Iaddend.rotor relative to .[.the.]. .Iadd.said .Iaddend.support, comprising a first set of engagement elements provided on one of .[.the.]. .Iadd.said .Iaddend.rotor and support, and a plurality of sets of second engagement elements provided on the other of .[.the.]. .Iadd.said rotor .Iaddend.and .Iadd.said .Iaddend.support, said first set of engagement elements being engageable with each set of said plurality of sets of second engagement elements to provide, at each .Iadd.angularly .Iaddend.indexed position .Iadd.of the plurality of angularly indexed positions.Iaddend., a stable.[.,.]. .Iadd.and .Iaddend.repeatable .[.rest.]. position of .[.the.]. .Iadd.said .Iaddend.rotor on .[.the.]. .Iadd.said .Iaddend.support;
coupling and decoupling means .Iadd.provided on said rotor and said support .Iaddend.for engaging and disengaging said first set of engagement elements with a set of said second engagement elements; and
driving means .Iadd.provided on said support .Iaddend.for rotating said rotor relative to said support substantially about an axis when said first and second engagement elements are disengaged, thereby to rotate said rotor from one .Iadd.angularly .Iaddend.indexed position to another.
2. A probe head according to claim 1, wherein said retaining means comprises a magnet provided on one of .[.the.]. .Iadd.said .Iaddend.rotor and .Iadd.said .Iaddend.support, and a ferromagnetic element provided on the other of .[.the.]. .Iadd.said .Iaddend.rotor and .Iadd.said .Iaddend.support to axially urge said first and .[.a.]. .Iadd.one of said plurality of sets of .Iaddend.said second .[.set of.].engagement elements into engagement.
3. A probe head according to claim 2, wherein said driving means are provided by .[.an axially movable and.]. .Iadd.a .Iaddend.rotatable drive dog on .[.the.]. .Iadd.said .Iaddend.support, said drive dog having a set of detent elements configured to engage a corresponding set of detent elements provided on said rotor.
4. A probe head according to claim 3, wherein said .Iadd.drive dog is axially moveable and said .Iaddend.coupling and decoupling means are provided by .[.said axially movable and rotatable.]. .Iadd.axial movement of said .Iaddend.drive dog.
5. A probe head according to claim 3, wherein said magnet and ferromagnetic element are each provided on one of .[.the.]..Iadd.said .Iaddend.drive dog and .Iadd.said .Iaddend.rotor. .Iadd.
6. A probe head for orienting a probe relative to a moveable arm of a coordinate positioning machine, comprising:
a support structure by which the probe head is connectable to the moveable arm of the machine;
a rotor rotatable relative to the support about an axis for carrying a probe;
an indexing device comprising first and second sets of mutually engageable indexing elements on the rotor and support structure respectively, engageable in a plurality of angular orientations about said axis, to provide a corresponding plurality of angularly indexed positions at which the rotor has a stable and repeatable position on the support;
a coupling and decoupling device for engaging and disengaging the first and second sets of indexing elements;
a driving device for rotating the rotor relative to the support structure when the first and second sets of indexing elements are disengaged, thereby to rotate the rotor from one angularly indexed position of the plurality of angularly indexed positions to another, the driving device including first and second sets of mutually engageable engagement elements provided on the rotor and support structure, and wherein means are provided for disengaging the engagement elements during coupling of the first and second sets of indexing elements. .Iaddend..Iadd.7. A probe head according to claim 6, wherein the coupling and decoupling device includes a magnetic element connected to one of the rotor and the support structure and a ferromagnetic element connected to the other of the rotor and the support structure. .Iaddend..Iadd.8. A probe head according to claim 7, wherein the coupling and decoupling device further comprises a motor and an axially movable drive dog, actuable by the motor and connected to the support structure for engaging the rotor, thereby to increase and decrease the separation between the magnetic and ferromagnetic elements. .Iaddend..Iadd.9. A probe head according to claim 8, wherein said engagement elements are provided on the drive dog and the rotor.
.Iaddend..Iadd.10. A probe head according to claim 8, wherein the magnetic element is provided on one of the drive dog and the rotor and the ferromagnetic element is provided on the other of the drive dog and the
rotor. .Iaddend..Iadd.11. A probe head for orienting a probe relative to a movable arm of a coordinate positioning machine, comprising:
a support by which the probe head is connectable to the arm of the machine;
a rotor, rotatable relative to the support about an axis, for carrying a probe;
an indexing device comprising first and second sets of mutually engageable indexing elements provided on the rotor and the support respectively, engageable in a plurality of angular orientations about the axis to provide a corresponding plurality of angularly indexed positions at which the rotor has a stable and repeatable position on the support;
coupling and decoupling device for engaging and disengaging the first and second sets of indexing elements;
a driving device for rotating the rotor relative to the support when the first and second sets of indexing elements are disengaged, thereby to rotate the rotor from one indexed position to another; and
a retaining device for releasably retaining the rotor on the support to
enable one rotor to be exchanged for another. .Iaddend..Iadd.12. A probe head according to claim 11, wherein said retaining device comprises a magnet provided on one of the rotor and the support and a ferromagnetic element provided on the other of the rotor and the support to axially urge the first and second sets of indexing elements into engagement.
.Iaddend..Iadd.13. A probe head according to claim 12, wherein the coupling and decoupling device comprises an axially movable drive dog on the support. .Iaddend..Iadd.14. A probe head according to claim 12, wherein the axially movable drive dog is rotatable and comprises sets of mutually engageable driving elements provided on the drive dog and rotor
thereby to provide the driving device. .Iaddend..Iadd.15. A probe head according to claim 14, wherein means are provided for disengaging the sets of driving elements on the drive dog and the rotor during coupling of the
first and second sets of indexing engagement elements. .Iaddend..Iadd.16. A probe head according to claim 13, wherein the magnet and ferromagnetic element are each provided on one of the drive dog and rotor.
.Iaddend..Iadd.17. A probe head for orienting a probe relative to a moveable arm of a coordinate positioning machine, comprising:
a support by means of which the probe head is connectable to the moveable arm of the machine;
a rotor for carrying a probe, the rotor is rotatable relative to the support about an axis;
an indexing device comprising first and second sets of mutually engageable indexing elements on the rotor and the support respectively, engageable at a plurality of angular orientations about the axis to provide a corresponding plurality of angularly indexed positions at which the rotor has a stable and repeatable position on the support;
a coupling and decoupling device for engaging and disengaging the first and second sets of indexing elements comprising a magnetic element provided on one of the rotor and the support and a ferromagnetic element on the other of the rotor and the support, for axially urging the first and second sets of indexing elements into engagement, and an axially moveable member provided on the support for axially displacing the rotor relative to the support thereby to effect the disengagement; and
a driving device for rotating the rotor relative to the support substantially about the axis when the first and second sets of indexing elements are disengaged, thereby to rotate the rotor from one indexed
position to another. .Iaddend..Iadd.18. A probe head according to claim 17, wherein the one of the magnetic element and the ferromagnetic element on the support is provided on the axially movable member.
.Iaddend..Iadd. . A probe head according to claim 18, wherein the axially moveable member is a rotatable drive dog, and first and second sets of mutually engageable driving elements are provided upon the drive dog and the rotor respectively, the driving device being provided by the drive dog, the driving elements, and a motor for rotating the drive dog. .Iaddend..Iadd.20. A probe head for orienting a probe relative to a moveable arm of a coordinate positioning machine, comprising:
a support by means of which the probe head is connectable to the moveable arm of the machine;
a rotor for carrying a probe, the rotor rotatable relative to the support about an axis;
an indexing device comprising first and second sets of mutually engageable indexing elements on the rotor and the support respectively, engageable at a plurality of angular orientations about said axis to provide a corresponding plurality of angularly indexed positions at which the rotor has a stable and repeatable position on the support;
a biasing device for axially biasing the rotor into engagement with the support;
an axially moveable drive dog on the support which is engageable with the rotor, and a motor for actuating the drive dog, the drive dog being actuable by the motor to increase and decrease the axial separation of the rotor and support and, thereby, in cooperation with the biasing device, correspondingly disengage and engage the indexing elements;
the drive dog being additionally rotatable substantially about the axis, and having a first set of driving elements on an end thereof engageable with a second set of driving elements on the rotor, to enable rotation of the rotor by the drive dog relative to the support when the indexing
elements are disengaged. .Iaddend..Iadd.21. A probe head according to claim 20, wherein the biasing device comprises a magnetic element provided on one of the rotor and the support and a ferromagnetic element provided on the other of the rotor and the support, the motor increases and decreases the separation between the magnetic elements. .Iaddend.
US08/389,785 1991-07-11 1995-02-16 Probe head with indexing mechanism Expired - Lifetime USRE35510E (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US08/389,785 USRE35510E (en) 1991-07-11 1995-02-16 Probe head with indexing mechanism

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB9114946 1991-07-11
GB919114946A GB9114946D0 (en) 1991-07-11 1991-07-11 Probe head
US07/911,120 US5185936A (en) 1991-07-11 1992-07-09 Probe head with indexing mechanism
US08/389,785 USRE35510E (en) 1991-07-11 1995-02-16 Probe head with indexing mechanism

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US07/911,120 Reissue US5185936A (en) 1991-07-11 1992-07-09 Probe head with indexing mechanism

Publications (1)

Publication Number Publication Date
USRE35510E true USRE35510E (en) 1997-05-20

Family

ID=10698169

Family Applications (2)

Application Number Title Priority Date Filing Date
US07/911,120 Ceased US5185936A (en) 1991-07-11 1992-07-09 Probe head with indexing mechanism
US08/389,785 Expired - Lifetime USRE35510E (en) 1991-07-11 1995-02-16 Probe head with indexing mechanism

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US07/911,120 Ceased US5185936A (en) 1991-07-11 1992-07-09 Probe head with indexing mechanism

Country Status (5)

Country Link
US (2) US5185936A (en)
EP (2) EP0523906B1 (en)
JP (1) JP3226612B2 (en)
DE (2) DE69221896T2 (en)
GB (1) GB9114946D0 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6170358B1 (en) * 1998-03-14 2001-01-09 Reinshaw Plc Indexing mechanism
US20060053907A1 (en) * 2004-09-16 2006-03-16 The Boeing Company End effector inspection apparatus and method
EP2559965A1 (en) 2003-09-22 2013-02-20 Renishaw plc Method of error compensation in a coordinate measuring machine
US8921788B1 (en) 2013-06-28 2014-12-30 Unimetrik, S.A. Laser sensor with integrated rotating mechanism

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4308823C2 (en) * 1993-03-19 2002-11-07 Zeiss Carl Measuring probe for coordinate measuring machines
DE19617023C1 (en) * 1996-04-27 1997-10-16 Mahr Gmbh Surface profile and/or roughness measuring device
US6032381A (en) * 1996-12-02 2000-03-07 Miller; Walter R Dovetail accessory for a dial test indicator
GB9701571D0 (en) * 1997-01-25 1997-03-12 Renishaw Plc The changing of task modules on a coordinate positioning machine
US6430828B1 (en) 1998-04-17 2002-08-13 Electronic Measuring Devices, Inc. Coordinate positioning apparatus with indexable stylus, components thereof, and method of using it
DE20006504U1 (en) * 2000-04-08 2000-08-17 Brown & Sharpe GmbH, 35578 Wetzlar Probe head with exchangeable stylus
DE10161100A1 (en) * 2001-12-12 2003-06-26 Komeg Ind Mestechnik Gmbh Mounting for the feeler of a feeler gauge, which is suitable for use in a modular measurement instrument, has a two part design, with the two halves joined together in a press fit with a three point bearing arrangement
EP1443302B2 (en) * 2003-01-29 2015-09-16 Tesa Sa Steerable feeler head
DE102004002853A1 (en) * 2004-01-19 2005-08-11 Carl Zeiss Industrielle Messtechnik Gmbh Mounting device for coordinate measuring machine
ATE378571T1 (en) 2004-04-23 2007-11-15 Klingelnberg Gmbh DEVICE WITH A DETACHABLE PROBE AND MEASURING INSTRUMENT COMPRISING SUCH DEVICE
SE527421C2 (en) * 2004-04-27 2006-02-28 Hexagon Metrology Ab Coordinate measuring machine composed of individually calibrated units
DE102004059468B3 (en) * 2004-12-10 2006-06-14 Hexagon Metrology Gmbh A method of separating the mechanical connection between a stylus receptacle and a probe and means for severing the mechanical connection between a stylus receptacle and a probe
DE102005063242B4 (en) * 2005-12-20 2011-01-13 Carl Zeiss Industrielle Messtechnik Gmbh Magnetic coupling, in particular for locking a rotary joint in a coordinate measuring machine
JP4939110B2 (en) * 2006-05-16 2012-05-23 株式会社ミツトヨ Probe and surface texture measuring device
DE102007022326B4 (en) * 2007-05-08 2022-07-07 Carl Zeiss Industrielle Messtechnik Gmbh Coordinate measuring device for determining spatial coordinates on a measurement object, and rotating/pivoting mechanism for such a coordinate measuring device
GB0804114D0 (en) 2008-03-05 2008-04-09 Renishaw Plc Surface sensing device
DE102008038599B4 (en) * 2008-08-21 2010-12-02 Carl Zeiss Industrielle Messtechnik Gmbh Sensor joint and method for operating a sensor
DE102009008722A1 (en) 2009-02-06 2010-08-19 Carl Zeiss Industrielle Messtechnik Gmbh Coordinate measuring device for determining spatial coordinates on a measurement object and a probe system for such a coordinate measuring machine
DE102009048581B3 (en) 2009-10-07 2011-06-01 Carl Zeiss Industrielle Messtechnik Gmbh Magnetically operated swivel joint and method of operating the joint
DE102010006505B4 (en) * 2010-01-28 2013-09-19 Carl Zeiss Industrielle Messtechnik Gmbh Coordinate measuring machine with passive rotary-swivel mechanism
DE102010018493B4 (en) 2010-04-21 2012-12-06 Carl Zeiss Industrielle Messtechnik Gmbh Coordinate measuring device for determining spatial coordinates on a measurement object and probe for such a coordinate measuring machine
DE102010020654A1 (en) 2010-05-07 2011-11-10 Carl Zeiss Industrielle Messtechnik Gmbh Probe for a coordinate measuring machine for determining spatial coordinates on a measurement object
EP2633268B1 (en) 2010-10-27 2018-09-26 Nikon Corporation Profile measuring apparatus and method for manufacturing a structure.
DE102012103934B3 (en) * 2012-05-04 2013-08-29 Carl Zeiss Industrielle Messtechnik Gmbh Optical measuring head for coordinate measuring apparatus, has handle coupled with tubular interface part in selective position, and rod connected to interface part through bolt, which is movably supported in over-sized hole
CN103557818B (en) * 2013-11-11 2016-01-27 厦门大学 A kind of probe conversion device for three coordinate measuring machine
WO2016053858A1 (en) * 2014-09-30 2016-04-07 Aktiebolaget Skf Ultrasonic thickness gauge with interface to hand-held instrument
DE102015208803B3 (en) * 2015-05-12 2016-09-15 Carl Zeiss Industrielle Messtechnik Gmbh Turntable for a coordinate measuring machine
US9816797B1 (en) * 2015-07-23 2017-11-14 The United States Of America As Represented By The Secretary Of The Navy Modular angular alignment clocking mechanism
DE102016201466B3 (en) * 2016-02-01 2017-04-27 Carl Zeiss Industrielle Messtechnik Gmbh Turntable for a coordinate measuring machine
US10254105B2 (en) 2016-12-05 2019-04-09 Quality Vision International, Inc. Exchangeable lens module system for probes of optical measuring machines
DE102017113709B4 (en) * 2017-06-21 2019-01-24 Carl Mahr Holding Gmbh Measuring arm receiving device of a measuring system
DE102017114551B4 (en) * 2017-06-29 2021-12-23 Carl Zeiss Industrielle Messtechnik Gmbh Rotary swivel mechanism for a coordinate measuring machine
CN110076710B (en) * 2019-05-21 2021-02-26 中国航发成都发动机有限公司 Large-scale transportation aircraft engine rotor positioning and measuring device
GB202102199D0 (en) 2021-02-17 2021-03-31 Renishaw Plc Articulated joint
EP4295108A1 (en) 2021-02-17 2023-12-27 Renishaw PLC Articulated head
GB202102201D0 (en) 2021-02-17 2021-03-31 Renishaw Plc Metrology apparatus
GB202102200D0 (en) 2021-02-17 2021-03-31 Renishaw Plc Articulated member
EP4321834A1 (en) 2022-08-10 2024-02-14 Renishaw PLC Indexed articulated joint comprising a sensor for establishing a state of engagement and associated metrology apparatus
DE102022124770B3 (en) * 2022-09-27 2024-02-15 Jenoptik Industrial Metrology Germany Gmbh Surface measuring device

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3091133A (en) * 1960-09-08 1963-05-28 Thompson Designs Inc Indexing mechanism
GB1044355A (en) * 1964-05-27 1966-09-28 Nat Res Dev Improved indexing devices
US4168576A (en) * 1977-02-07 1979-09-25 Rolls-Royce Limited Method and apparatus for use in co-ordinate measuring machines
DE3011002A1 (en) * 1979-03-30 1980-10-16 Renishaw Electrical Ltd TOOL CONNECTING MECHANISM FOR MACHINE TOOLS
GB2047133A (en) * 1979-03-30 1980-11-26 Renishaw Electrical Ltd Tool connecting mechanism for machine tools
US4349906A (en) * 1979-09-18 1982-09-14 Xerox Corporation Optically controlled integrated current diode lasers
EP0142373A2 (en) * 1983-11-15 1985-05-22 Renishaw plc Tool change apparatus
US4644825A (en) * 1984-04-16 1987-02-24 Kabushiki Kaisha Yamazaki Indexing and positioning device
EP0317967A2 (en) * 1987-11-26 1989-05-31 Firma Carl Zeiss Rotation-deflection arrangement for the feeler heads of coordinate-measuring devices
WO1989005210A1 (en) * 1987-12-05 1989-06-15 Renishaw Plc Apparatus for changing a sensing device
DE3811851A1 (en) * 1988-04-08 1989-10-19 Wegu Messtechnik REPLACEABLE FASTENING OF A PROBE TO THE PROBE OF A COORDINATE MEASURING DEVICE
EP0392660A2 (en) * 1989-04-14 1990-10-17 Renishaw plc Probe head
EP0406781A2 (en) * 1989-07-07 1991-01-09 Firma Carl Zeiss Magasin for coordinate measuring machine
EP0406782A1 (en) * 1989-07-07 1991-01-09 Firma Carl Zeiss Electromagnetic holding device
EP0471168A2 (en) * 1990-08-16 1992-02-19 Zeiss Messgerätebau GmbH Support for the feeler of a coordinate measuring machine

Patent Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3091133A (en) * 1960-09-08 1963-05-28 Thompson Designs Inc Indexing mechanism
GB1044355A (en) * 1964-05-27 1966-09-28 Nat Res Dev Improved indexing devices
US4168576A (en) * 1977-02-07 1979-09-25 Rolls-Royce Limited Method and apparatus for use in co-ordinate measuring machines
DE3011002A1 (en) * 1979-03-30 1980-10-16 Renishaw Electrical Ltd TOOL CONNECTING MECHANISM FOR MACHINE TOOLS
GB2047133A (en) * 1979-03-30 1980-11-26 Renishaw Electrical Ltd Tool connecting mechanism for machine tools
US4349906A (en) * 1979-09-18 1982-09-14 Xerox Corporation Optically controlled integrated current diode lasers
EP0142373A2 (en) * 1983-11-15 1985-05-22 Renishaw plc Tool change apparatus
US4644825A (en) * 1984-04-16 1987-02-24 Kabushiki Kaisha Yamazaki Indexing and positioning device
US4888877A (en) * 1987-11-26 1989-12-26 Carl-Zeiss-Stiftung, Heidenhein/Brenz Articulating head for a coordinate-measuring instrument
EP0317967A2 (en) * 1987-11-26 1989-05-31 Firma Carl Zeiss Rotation-deflection arrangement for the feeler heads of coordinate-measuring devices
WO1989005210A1 (en) * 1987-12-05 1989-06-15 Renishaw Plc Apparatus for changing a sensing device
DE3811851A1 (en) * 1988-04-08 1989-10-19 Wegu Messtechnik REPLACEABLE FASTENING OF A PROBE TO THE PROBE OF A COORDINATE MEASURING DEVICE
US4938083A (en) * 1988-04-08 1990-07-03 Wegu-Messtechnik Gmbh Exchangeable attachment of a probe stylus to a probe for a coordinate measuring installation
EP0392660A2 (en) * 1989-04-14 1990-10-17 Renishaw plc Probe head
EP0406781A2 (en) * 1989-07-07 1991-01-09 Firma Carl Zeiss Magasin for coordinate measuring machine
EP0406782A1 (en) * 1989-07-07 1991-01-09 Firma Carl Zeiss Electromagnetic holding device
US5028901A (en) * 1989-07-07 1991-07-02 Carl-Zeiss Stiftung Magazine for coordinate measuring apparatus
US5041806A (en) * 1989-07-07 1991-08-20 Carl-Zeiss-Stiftung Electromagnetic holding device
EP0471168A2 (en) * 1990-08-16 1992-02-19 Zeiss Messgerätebau GmbH Support for the feeler of a coordinate measuring machine
US5228205A (en) * 1990-08-16 1993-07-20 Dr.-Ing. Hofler Mebgeratebau Gmbh Mounting for the sensor of coordinate measuring machines

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
Carl Zeiss Produktinformation, "DSE 05 Dreh-Schwenk-Einrichtung".
Carl Zeiss Produktinformation, DSE 05 Dreh Schwenk Einrichtung . *
Renishaw Product Brochure & Description; "PH9 Automated Inspection System for Measuring Machines" No Date.
Renishaw Product Brochure & Description; PH9 Automated Inspection System for Measuring Machines No Date. *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6170358B1 (en) * 1998-03-14 2001-01-09 Reinshaw Plc Indexing mechanism
EP2559965A1 (en) 2003-09-22 2013-02-20 Renishaw plc Method of error compensation in a coordinate measuring machine
EP3333537A1 (en) 2003-09-22 2018-06-13 Renishaw PLC Method of error compensation
US20060053907A1 (en) * 2004-09-16 2006-03-16 The Boeing Company End effector inspection apparatus and method
US20060107775A1 (en) * 2004-09-16 2006-05-25 The Boeing Company End effector inspection apparatus and method
US7114406B2 (en) * 2004-09-16 2006-10-03 The Boeing Company End effector inspection apparatus and method
US7328630B2 (en) 2004-09-16 2008-02-12 The Boeing Company End effector inspection apparatus and method
US8921788B1 (en) 2013-06-28 2014-12-30 Unimetrik, S.A. Laser sensor with integrated rotating mechanism
WO2014207266A1 (en) 2013-06-28 2014-12-31 Unimetrik, S.A. Laser sensor with a built-in rotary mechanism

Also Published As

Publication number Publication date
DE69221896T2 (en) 1998-01-02
JPH05248808A (en) 1993-09-28
EP0637729A3 (en) 1995-05-17
DE69221896D1 (en) 1997-10-02
JP3226612B2 (en) 2001-11-05
EP0523906B1 (en) 1995-10-25
EP0637729A2 (en) 1995-02-08
DE69205634T2 (en) 1996-04-25
EP0523906A1 (en) 1993-01-20
GB9114946D0 (en) 1991-08-28
US5185936A (en) 1993-02-16
EP0637729B1 (en) 1997-08-27
DE69205634D1 (en) 1995-11-30

Similar Documents

Publication Publication Date Title
USRE35510E (en) Probe head with indexing mechanism
EP0392660B1 (en) Probe head
EP2564152B1 (en) Metrology apparatus
US6430828B1 (en) Coordinate positioning apparatus with indexable stylus, components thereof, and method of using it
US5028901A (en) Magazine for coordinate measuring apparatus
US6012230A (en) Inspection system for coordinate positioning machine
EP0142373B2 (en) Tool change apparatus
US9140532B2 (en) Measuring head for a coordinate measuring machine for determining spatial coordinates on a measurement object
JP2005305636A (en) Tool change apparatus
JPS62246495A (en) Part sampling and arrangement spindle assembly with small-sized internal straight line and tool assembly capableof being exchanged with rotary displacement motor
US4625461A (en) Method and apparatus for positioning work supporting units in grinding machines
US5133128A (en) Drive control system for exchange arm
JPS6195846A (en) Tool quill exchange mechanism for machine tool
JP4326072B2 (en) Device for connecting measuring tools to the measuring head
EP0293036A2 (en) Coupling for tool change apparatus
JPH04256806A (en) Measuring apparatus for rotary symmetrical work
US20040231148A1 (en) Head for implanting electrical components on substrates
JPH09210605A (en) Ball-groove measuring device
CN113346691B (en) VCM wire winding high-efficiency jig exchange system
JP2674300B2 (en) Work positioning device
JP2963725B2 (en) Chucking device for dynamic balance testing machine
JPH0121445B2 (en)
CN115655191A (en) Cam profile measuring device
CN117168796A (en) Torsion test equipment of pivot structure
JP2652542B2 (en) Tool head magazine device

Legal Events

Date Code Title Description
FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

FPAY Fee payment

Year of fee payment: 8

FPAY Fee payment

Year of fee payment: 12