Abstract:
A system is provided for programming workpiece feature inspection operations for a coordinate measuring machine. The system includes a computer aided design (CAD) file processing portion, an inspection motion path generation portion and a user interface. The user interface includes a workpiece inspection program simulation portion and auxiliary collision avoidance volume creation elements. The workpiece inspection program simulation portion displays a 3D view and the auxiliary collision avoidance volume creation elements are operable to create or define auxiliary collision avoidance volumes that are displayed in the 3D view. In various implementations, rather than requiring a user to model a physical object (e.g., as part of a workpiece or CMM) in a CAD file, the user may instead create and position an auxiliary collision avoidance volume at a location where the physical object is expected to be, so as to prevent collisions that could occur with the physical object.
Abstract:
A displacement measurement device has a detector area which is larger than the area of the beam spot reflected from the measurement surface. The detector area is made larger than the size of the beam spot on the detector area, in order to accommodate shifts in the location of the beam spot due to changes in the precise locations of the components of the displacement measurement device. The subset of pixels in the detector area having advantageous correlation characteristics, is then selected to perform the correlation calculation, thereby reducing data processing time requirements.
Abstract:
A method of simulation of NC machining, wherein machining simulation is carried out according to blank shape data, tool shape data and an NC program to modify the NC program itself or interpolation data by feedforward control so that optimum cutting conditions can be obtained. The simulation result can be used for correcting the NC program and the interpolation data at the next stage. Further, a record of tools used can be generated on the basis of this simulation result.
Abstract:
An X-Y table apparatus provided with a base (12), a member (14) capable of being moved in an X-direction with respect to the base, a member (18) capable of being moved in a Y-direction with respect to the X-direction-movable member and supporting an object placed thereon, and a means (20) for detecting an amount of movement of the object support member with respect to the base, the movement amount detecting means including a main scale (24) which is provided at the central portion of a lower surface of the object support member so that the main scale can be operated in accordance with the movement of the object support member, and which has a matrix type island-like first lattice, and an index scale (26) which is provided on the base so that it can be moved relatively and two dimensionally with respect to and extends in parallel with the main scale, and which has a second grid-ironed lattice (80) and a third grid-ironed lattice (82). This apparatus has a simple construction, and, moreover, it is capable of detecting the displacement of an object in the X- and Y-directions with a high accuracy. A block (100) attached unitarily to the object support member (18) is provided with a mounting hole (101). A free end portion (102) of a detecting shaft (22) of an X-Y encoder is inserted into this mounting hole and three-line-supported on three parallel pins (103a-103c). The relative position of angle of rotation of a table with respect to the X-Y encoder are finely regulated by turning the detecting shaft by a regulating lever (105) directly under the object support member.
Abstract:
A surface texture measuring apparatus allowing effects of vibration disturbance to be removed and a highly accurate measurement to be achieved. The surface texture measuring apparatus is further provided with a small surface texture measuring apparatus, which detects the amount of vibration of a workpiece while maintaining a detecting device in contact with the surface of the workpiece without moving the device along the workpiece. The main surface texture measuring apparatus conducts measurement with a high accuracy based on the detected unevenness value of the surface of the workpiece and on the amount of vibration detected by the small surface texture measuring apparatus.
Abstract:
A power transfer configuration is disclosed for providing power to a stored coordinate measurement machine (CMM) probe. A storage rack comprising at least one CMM probe receptacle is mounted proximate to a CMM. The CMM may automatically attach and detach from the CMM probe and insert and remove it from the storage rack probe receptacle. The power transfer configuration comprises a primary electromagnetic winding mounted to the storage rack proximate to the probe receptacle, and a secondary electromagnetic winding located internal to and proximate to the CMM probe housing. When the CMM probe is in the probe receptacle, the primary electromagnetic winding receives alternating current and generates a changing electromagnetic field proximate to the CMM probe housing. The secondary electromagnetic winding generates power in the CMM probe in response to receiving the changing electromagnetic field. The CMM probe may be internally heated while stored, using the generated power.
Abstract:
A touch probe circuit comprises a displacement sensor having a sensor signal responsive to touch probe stylus displacement, an offset compensation controller, and a difference amplifier. The offset compensation controller provides a varying offset compensation signal to compensate drift in a rest-state signal component of the sensor signal. The difference amplifier inputs the offset compensation signal and the sensor signal and amplifies the difference therebetween to provide an offset compensated displacement signal, which is output to a touch trigger signal generating circuit that provides a touch signal when the stylus touches a workpiece, and is also output to the offset compensation controller. The offset compensation controller portion provides a feedback loop that inputs the offset compensated displacement signal and outputs a responsive low pass filtered offset compensation signal to the difference amplifier, in order to provide the offset compensated displacement signal.
Abstract:
A method for operating a chromatic range sensor (CRS) system to identify abnormal spectral profiles arising from light reflected from more than one portion of a workpiece surface is provided. The method comprises: providing a CRS system comprising: an optical element, a light source, and CRS electronics comprising a CRS wavelength detector; operating the CRS system to receive an output spectral profile from a measurement point on a workpiece surface and provide corresponding output spectral profile data; analyzing the output spectral profile data to provide a peak region asymmetry characterization; and providing a corresponding abnormality indicator if the peak region asymmetry characterization indicates that the peak region is abnormally asymmetric.
Abstract:
An edge information extracting device and the method thereof in which threshold levels are determined referring to only multivalued pictures which are included in one or more windows provided in a multivalued image and the binarizing is performed. The desired edge information in windows can be extracted reliably and precisely.
Abstract:
This invention provides a photoelectric encoder characterized in that a reference grid substrate on a light emission side is formed of a sheet-like light emission device and thin film-like light-shielding materials are arranged at regular gaps on a surface facing the reference grid. Since the light emission device and the grid substrate on the light emission side are formed integrally, the size and weight of the encoder can be reduced and the number of components can be decreased.