Device and method for measuring angles of a work
AssigneesAmada Company, Limited, Hidehiko Kouno
InventorsHidehiko Kouno, Yoshiaki Niwa, Akira Sengoku, Takayuki Aoki
Life of this patent
Estimating the term…
Abstract
A device is provided for measuring an angle between two intersecting surfaces of a work. The device includes a light emitting device for inducing a light pattern on the surfaces of the work, a camera for picking up the pattern, and an image processor for processing the picture of the pattern and obtaining the angle of the work.
Claims22
A method for measuring an angle .alpha. formed by two surfaces of a work, comprising the steps of:
- emitting light in at least a direction toward the two surfaces for inducing linear light patterns on the two surfaces;
- picking up the light patterns on the two surfaces in a pickup direction and onto a coordinate plane as an image, the pickup direction having predetermined positional relations with the two surfaces and the direction of the emitted light;
- and
- obtaining inclinations .alpha..sub.1, .alpha..sub.2 of the two surfaces with respect to the pickup direction based on angles .theta..sub.1, .theta..sub.2 of the linear light patterns picked up on the coordinate plane with respect to a coordinate axis of the coordinate plane.
A device for measuring an angle formed by two surfaces of a work comprising:
- a light emitting device for emitting light toward the two surfaces for inducing linear light patterns on the two surfaces;
- a camera for picking up the linear light patterns on the two surfaces onto a coordinate plane as an image;
- and
- an image processor for processing the image and obtaining the angle.
A device for measuring a bending angle of a work sheet, used for a bending machine which bends the work sheet placed between a punch tool and a die tool into front and rear leaves with a bending line of the tools, comprising:
- a light emitting device, disposed in vicinity of the tools, for emitting light in a direction toward surfaces of the leaves for inducing linear light patterns on the surfaces:
- a pickup device, disposed in the vicinity of the tools, for picking up the linear light patterns on the two surfaces in a pickup direction and onto a coordinate plane as an image, the pickup direction having predetermined positional relations with the surfaces and the direction of the emitted light;
- and
- an image processor for processing the image for obtaining angles of the linear light patterns picked up on the coordinate plane with a coordinate axis.
A device for measuring a bending angle of a work sheet, used for a bending machine which bends the work sheet placed between a punch tool and a die tool into front and rear leaves with a bending line of the tools, comprising:
- a light emitting device for emitting light in a direction through a hole section formed in at least one of the tools and toward surfaces of the leaves for inducing linear light patterns on the surfaces;
- a pickup device for picking up, through the hole section, the linear light patterns in a pickup direction and onto a coordinate plane as an image, the pickup direction having predetermined positional relations with the surfaces and the direction of the emitted light;
- and
- an image processor for processing the image and obtaining the bending angle of the work sheet.
A device for measuring a bending angle of a work sheet, used for a bending machine which bends the work sheet placed between a punch tool and a die tool into front and rear leaves with a bending line of the tools, comprising:
- a unit disposed adjacently to the tool and provided with a light emitting device for emitting light in a direction toward surfaces of the leaves for inducing linear light patterns on the two surfaces on the surfaces and with a camera for picking up the linear light patterns in a pickup direction and onto a coordinate plane as an image, the pickup direction having predetermined positional relations with the surfaces and direction of the emitted light;
- and
- an image processor for processing the image for obtaining the bending angle of the work sheet, wherein the unit is slidable horizontally along the bending lines of the tools and vertically.
Dependencies are inferred from the claim text.