Machine stand, particularly for so-called coordinate measuring machines, and a method for constructing the stand
First Claim
1. A machine stand, particularly a machine stand for so-called coordinate measuring machines, comprising:
- a base, at least one vertical leg supported by the base, a horizontal beam supported by said at least one vertical leg, a bar attached to the horizontal beam, and a measuring head carried by the bar, wherein said measuring head is movable to any selected point within a three-dimensional space volume defined by the stand by moving said beam and said bar in relation to the base, wherein one vertical leg is non-rotatably and flexurally rigidly attached to said base, measuring means for measuring lateral bending deformation of the rigidly attached vertical leg, and wherein said beam is not non-rotatably and flexurally rigidly connected to said rigidly attached vertical leg, to provide a structure in which deformations of elements of the structure can be readily calculated.
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Accused Products
Abstract
A machine stand and a method of constructing it particularly a machine stand for so-called coordinate measuring machines. The machine includes one or more vertical legs, one or more horizontal beams, and a rod or bar which is mounted on a horizontal beam and intended to carry a measuring head tool or the like. At least one vertical leg is supported by a base element. The vertical leg supports at least one beam, and the rod can be moved to any selected point within the space volume defined by the stand by moving the leg, the beam and the rod relative to the base element. At least one vertical leg is mounted relative to the base element so as to be flexurally rigid and non-rotatable about its longitudinal axis; the beam or beams are not non-rotatably and flexurally rigidly connected, so that a yielding structure is obtained. Deformation of the first vertical leg is measured by measuring means, so as to be able to determine deformation of the structure.
27 Citations
24 Claims
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1. A machine stand, particularly a machine stand for so-called coordinate measuring machines, comprising:
- a base, at least one vertical leg supported by the base, a horizontal beam supported by said at least one vertical leg, a bar attached to the horizontal beam, and a measuring head carried by the bar, wherein said measuring head is movable to any selected point within a three-dimensional space volume defined by the stand by moving said beam and said bar in relation to the base, wherein one vertical leg is non-rotatably and flexurally rigidly attached to said base, measuring means for measuring lateral bending deformation of the rigidly attached vertical leg, and wherein said beam is not non-rotatably and flexurally rigidly connected to said rigidly attached vertical leg, to provide a structure in which deformations of elements of the structure can be readily calculated.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of constructing a machine stand, particularly a stand intended for so-called coordinate measuring machines, comprising the steps of:
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a) providing a base; b) non-rotatable and flexurally rigidly attaching a vertical leg to the base; c) supporting a horizontal beam from the vertical leg with a rotatable and non-rigid connection between the horizontal beam and the vertical leg; d) movably connecting with the horizontal beam a bar carrying a measuring head, wherein the measuring head is movable horizontally and vertically relative to the horizontal beam, so that the measuring head is positionable at any selected point within a three-dimensional space volume defined by the stand; and e) during a coordinate measuring operation, measuring the lateral bending deformation of the rigidly attached vertical leg with a deflection measuring means to permit an accurate determination to be made of the position of the measuring head within the three-dimensional space volume. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification