Method and apparatus for producing three-dimensional shape
AssigneeKawasaki Jukogyo Kabushiki Kaisha
InventorsGensuke Okada, Gouhei Iijima
Life of this patent
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Abstract
In an apparatus and method for producing from an object having a three-dimensional shape a shape equivalent or analoguous to the three-dimensional shape, light is irradiated to the object in an optical cutting plane. The light is picked up by an image pick-up device, and two-dimensional positions of the light are obtained for each minute distance in a direction perpendicular to the optical cutting plane to determine its three dimensional shape.
Claims17
A method of producing a three-dimensional shape from an object having a three-dimensional shape, comprising the steps of:
- irradiating parallel light having a predetermined width to the outer periphery of said object;
- picking up a reflected optical image of the irradiated object by a two-dimensional image pick-up device with its optical axis intersecting an optical plane formed by said parallel light at a predetermined angle;
- measuring a sectional shape of said object relative to said optical image on the basis of the shape of the picked-up optical image;
- shifting the parallel light and the two-dimensional image pick-up device by the width of the parallel light in a direction perpendicular to the optical plane to sequentially measure adjacent sectional shapes of the object;
- after measuring the sectional shapes of the entire object, forming templates corresponding to the respective measured sectional shapes from sheets;
- and
- stacking said templates to produce a three-dimensional shape analoguous to said object.
A method of producing a three-dimensional shape according to claim wherein said parallel light is laser slit light.
An apparatus for producing a three-dimensional shape from an object having a three-dimensional shape, comprising:
- means for irradiating parallel light to said object in a fixed plane;
- optical image pick-up means for picking up the reflected light of the light irradiated to said object;
- means for measuring a sectional shape from the optical image picked up by the image pick-up means;
- means for forming from a sheet a template in such a way that said sectional shape corresponds to a thickness of the sheet, on the basis of said sectional shape;
- and
- means for shifting said light irradiation means and said image pick-up device in a vertical direction perpendicular to the plane;
- whereby, by forming templates relative to the entire object, a three-dimensional shape equivalent or analogous to the object is produced.
An apparatus for producing a three-dimensional shape from an object having a three-dimensional shape, comprising:
- means for rotating said object by a minute angle;
- a beam light irradiation device capable of scanning laser beam light on said object to form a beam light plane;
- a two-dimensional image pick-up device fixed at a predetermined distance from and at a predetermined angle with said beam light irradiation device, and for picking up reflected light spots of the laser beam irradiated to the object;
- means for calculating the positions of the light spots picking up the pick-up device for each minute angle of the object and calculating sectional shapes of the object, parallel to said beam light plane;
- means for forming templates each with a predetermined scale for each of said sectional shapes from sheets of a certain thickness, on the basis of said sectional shapes;
- and
- means for stacking the templates to produce a three-dimensional shape with a predetermined scale for said object.
Dependencies are inferred from the claim text.