Apparatus and method of measuring workpieces
First Claim
1. A method for measuring a surface profile of a feature through a restricted access opening using a surface sensing device mounted on a scanning head on a member of a coordinate positioning apparatus, wherein the coordinate positioning apparatus may be operated to produce relative movement between the scanning head and the surface profile and wherein the scanning head includes a drive for producing rotational movement of the surface sensing device about at least one axis, the method comprising the following steps:
- positioning the scanning head on a first side of the restricted access opening and then driving the coordinate positioning apparatus to provide relative movement of the member and surface profile along a non-linear path and also driving the scanning head to provide the rotational movement of the surface sensing device about the at least one axis so that the surface sensing device measures the surface profile on a second side of the restricted access opening;
wherein the motion of the member of the coordinate positioning apparatus and the rotational movement of the scanning head are synchronized with each other.
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Abstract
A method and apparatus for measuring a surface using a surface sensing device mounted on a scanning head on a member of a coordinate positioning apparatus. The coordinate positioning apparatus may be operated to produce relative movement between the scanning head and the surface profile and the scanning head includes a drive for producing rotational movement of the surface sensing probe about one or more axis. The coordinate positioning apparatus is driven to provide relative movement between the member and the surface profile in a circular path and the scanning head is driven to move the surface sensing device about said one or more axes, such that the surface sensing device maintains a nominally constant lead angle. The motion of the coordinate positioning apparatus and scanning head is synchronous.
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Citations
36 Claims
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1. A method for measuring a surface profile of a feature through a restricted access opening using a surface sensing device mounted on a scanning head on a member of a coordinate positioning apparatus, wherein the coordinate positioning apparatus may be operated to produce relative movement between the scanning head and the surface profile and wherein the scanning head includes a drive for producing rotational movement of the surface sensing device about at least one axis, the method comprising the following steps:
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positioning the scanning head on a first side of the restricted access opening and then driving the coordinate positioning apparatus to provide relative movement of the member and surface profile along a non-linear path and also driving the scanning head to provide the rotational movement of the surface sensing device about the at least one axis so that the surface sensing device measures the surface profile on a second side of the restricted access opening; wherein the motion of the member of the coordinate positioning apparatus and the rotational movement of the scanning head are synchronized with each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A non-transitory computer readable medium on which is recorded a program for causing a computer to perform a method for measuring a surface profile through a restricted access opening using a surface sensing device mounted on a scanning head on a member of a coordinate positioning apparatus, wherein the coordinate positioning apparatus may be operated to produce relative movement between the scanning head and the surface profile and wherein the scanning head includes a drive for producing rotational movement of the surface sensing device about one or more axes, the method comprising:
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positioning the scanning head on a first side of the restricted access opening and then driving the coordinate positioning apparatus to provide the relative movement of the member and surface profile along a non-linear path and also driving the scanning head to provide the rotational movement of the surface sensing device about the at least one axis so that the surface sensing device measures the surface profile on a second side of the restricted access opening; wherein the motion of the member of the coordinate positioning apparatus and the rotational movement of the scanning head are synchronized with each other.
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10. Apparatus for measuring the surface profile of a feature through a restricted access opening using a surface sensing device mounted on a scanning head on a member of a coordinate positioning apparatus, wherein the coordinate positioning apparatus may be operated to produce relative movement between the scanning head and the surface profile and wherein the scanning head includes a drive for producing rotational movement of the surface sensing device about at least one axis, and a computing device, the computing device carrying out the following steps:
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positioning the scanning head on a first side of the restricted access opening and then driving the coordinate positioning apparatus to provide the relative movement of the member and the surface profile along a non-linear path and also driving the scanning head to provide the rotational movement of the surface sensing device about the at least one axis so that the surface sensing device measures the surface profile on a second side of the restricted access opening; wherein the motion of the member of the coordinate positioning apparatus and the rotational movement of the scanning head are synchronized with each other.
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11. A method for measuring the surface profile of a bore using a surface sensing device mounted on a scanning head on a member of a coordinate positioning apparatus, wherein the coordinate positioning apparatus may be operated to produce relative movement between the scanning head and the surface profile and wherein the scanning head includes a drive for producing rotational movement of the surface sensing device about at least one axis, the method comprising the following steps:
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driving the coordinate positioning apparatus to provide relative movement between the member and the surface profile in an arcuate, circular or spiral path; driving the scanning head to move the surface sensing device with a rotational motion about said at least one axis; wherein the motion of the member of the coordinate positioning apparatus and the rotational motion of the scanning head are synchronized with each other. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. Apparatus for measuring the surface profile of a bore comprising a surface sensing device mounted on a scanning head on a member of a coordinate positioning apparatus, wherein the coordinate positioning apparatus may be operated to produce relative movement between the scanning head and the surface profile and wherein the scanning head includes a drive for producing rotational movement of the surface sensing device about at least one axis, and a computing device, the computing device carrying out the following steps:
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driving the coordinate positioning apparatus to provide relative movement between the member and the surface profile in an arcuate, circular or spiral path; driving the scanning head to move the surface sensing device with a rotational motion about said at least one axis; wherein the motion of the member of the coordinate positioning apparatus and the rotational motion of the scanning head are synchronized with each other.
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20. A non-transitory computer readable medium on which is recorded a program for causing a computer to perform a method for measuring the surface profile of a bore using a surface sensing device mounted on a scanning head on a member of a coordinate positioning apparatus, wherein the coordinate positioning apparatus may be operated to produce relative movement between the scanning head and the surface profile and wherein the scanning head includes a drive for producing rotational movement of the surface sensing device about one or more axes, the method comprising:
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driving the coordinate positioning apparatus to provide relative movement between the member and the surface profile in an arcuate, circular or spiral path; driving the scanning head to move the surface sensing device with a rotational motion about said at least one axis; wherein the motion of the member of the coordinate positioning apparatus and the rotational motion of the scanning head are synchronized with each other.
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21. A method for measuring a surface profile using a surface sensing device mounted on a scanning head on a member of a coordinate positioning apparatus, wherein the coordinate positioning apparatus may be operated to produce relative movement between the scanning head and the surface profile and wherein the scanning head includes a drive for producing rotational movement of the surface sensing device about one or more axes, the method comprising:
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driving the coordinate positioning apparatus to provide relative movement between the member and the surface profile in a circular path which is superimposed onto a linear motion so as to thereby move in a spiral motion; and driving the scanning head to move the surface sensing device with a rotational motion about said one or more axes, wherein the spiral motion of the member of the coordinate positioning apparatus and the rotational motion of the scanning head are synchronous with each other. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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29. A non-transitory computer readable medium on which is recorded a program for causing a computer to perform a method for measuring a surface profile using a surface sensing device mounted on a scanning head on a member of a coordinate positioning apparatus, wherein the coordinate positioning apparatus may be operated to produce relative movement between the scanning head and the surface profile and wherein the scanning head includes a drive for producing rotational movement of the surface sensing device about one or more axes, the method comprising:
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driving the coordinate positioning apparatus to provide relative movement between the member and the surface profile in a circular path which is superimposed onto a linear motion so as to thereby move in a spiral motion; and driving the scanning head to move the surface sensing device with a rotational motion about said one or more axes, wherein the spiral motion of the member of the coordinate positioning apparatus and the rotational motion of the scanning head are synchronous with each other.
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30. Apparatus for measuring a surface profile comprising a surface sensing device mounted on a scanning head on a member of a coordinate positioning apparatus, wherein the coordinate positioning apparatus may be operated to produce relative movement between the scanning head and the surface profile and wherein the scanning head includes a drive for producing rotational movement of the surface sensing device about one or more axes, and a computing device, the computing device carrying out the following steps:
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driving the coordinate positioning apparatus to provide relative movement between the member and the surface profile in a circular path which is superimposed onto a linear motion so as to thereby move in a spiral motion; driving the scanning head to move the surface sensing device with a rotational motion about said one or more axes, wherein the spiral motion of the member of the coordinate positioning apparatus and the rotational motion of the scanning head are synchronous with each other. - View Dependent Claims (31, 32, 33, 34, 35, 36)
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Specification