Abstract: A method of auto scanning and scraping a work piece for a hard rail has a preparing step, a scanning step, a detecting step, an auto-scraping step and an analyzing step. The preparing step comprises preparing an auto scanning and scraping apparatus with a multi-axis machine tool, a control computer, an auto-scraping device and a position detector. The scanning step comprises scanning the surface of the work piece to read the roughness value and transporting the data to the control computer. The detecting step comprises forming a 3D-appearance drawing of the work piece and detecting the 3D-appearance drawing with multiple detection steps. The auto-scraping step comprises scraping the surface of the work piece by the auto-scraping device. The analyzing step comprises detecting the 3D-appearance drawing of the work piece that has been scraped with the preceding detection steps and scraping the work piece to meet the preceding detection steps.

Abstract: An optical calibration and testing device for machine tools includes a light source unit, a beam splitter, and at least one photo detector. The light source emits a laser light hitting the beam splitter and is split into two beams. One is perpendicular to the foundation of the light source unit, and the other is parallel with the foundation so as to test straightness, inclination angle, verticalness, vertical column inclination, vertical column parallelism and guide bar inclination of a machine tool. If there is no tested error, the position of the testing light spot coincides with that of the initial light spot. If there is an error, the position of testing light spot varies according to the error.

Abstract: A method of detecting a dynamic path of a five-axis machine tool having a spindle and a turntable and has a preparing step, a correcting step and a detecting step. The preparing step includes mounting a detector on the spindle, mounting a cat-eye reflector on the turntable, emitting a laser light to the cat-eye reflector, reflecting the laser light to the detector and splitting into two light beams. One of the light beams is emitted to a four-quadrant position sensitive detector. The correcting step includes rotating the detector, detecting a signal of the laser light by the four-quadrant position sensitive detector to eliminate an offset between the detecting assembly and the spindle. The detecting step includes detecting the dynamic path of the five-axis machine tool by detecting the positions of at least two of the linear axes and at least one of the rotation axes of the five-axis machine tool.

Abstract: A geometric error measuring device includes a measuring module and at least one (quadrant) photodiode. The measuring module has an emitting deice, which may emit at least one light ray; the photodiode may receive the incident ray. Also, the trajectory of the incident ray is parallel with the direction of measurement. If there is no geometric error, the position of the incident light ray will coincide with the position of the measured light ray. If there is a geometric error, the position of the measured light ray will not coincide with the position of the incident light ray. After the data are processed and calculated, geometric errors in straightness, squareness and rotational angles (pitch, yaw and roll) may be obtained. These geometric errors may then be corrected in the setup of a machine.

Abstract: An automatic scan and mark apparatus has a machine tool, a location detection module, a laser detector, an ink jet and a control computer. The machine tool has a movable module and a stage. The stage mounts and holds a specimen having a scraped surface. The control computer controls the location detection module to determine a position of the movable module, controls the laser detector to detect a surface morphology of the scraped surface in a measurement range, and activates the ink jet to eject inks on high points of the scraped surface of the specimen. Thus, the surface morphology is built automatically and high points are screened out and marked by colored ink. Manufacturer may easily redo scraping of determined high points based on the marked location on the specimen without burdensome measurement.

Abstract: A detecting assembly for multi-axis machine tools having a spindle and a turntable and has a detector, a lens device and a computer. The detector is connected to the spindle and has a mounting frame and two detecting segments. The mounting frame is connected to the spindle and has a connecting rod, a bottom board and multiple mounting boards. The detecting segments are mounted on the mounting boards and each has a light source and a sensor. The lens device is mounted on the turntable, extends into the detector and has a supporting shaft and a spherical lens. The spherical lens is mounted on an upper end of the supporting shaft to align light emitted from the light sources with corresponding sensors via the spherical lens. The computer is electrically connected to the detector to receive signals of the detecting segments of the detector and has a signal processor.

Abstract: Means for measuring a working machine's structural deviation from five reference axes includes a main sensing body bonded with a main axis of the working machine (or controlled to revolve), and a lighting unit set around the main sensing body to circle about the main sensing body with a fixed radius (or the lighting unit radiates a light on the main sensing body from that radial distance and circles along with the main sensing body) such that as soon as the main sensing body has detected an optical signal, it is converted to an error signal informing of the working machine's structural deviation in two or three dimensional displacement.

Abstract: Means for measuring a working machine's structural deviation from five reference axes includes a main sensing body bonded with a main axis of the working machine (or controlled to revolve), and a lighting unit set around the main sensing body to circle about the main sensing body with a fixed radius (or the lighting unit radiates a light on the main sensing body from that radial distance and circles along with the main sensing body) such that as soon as the main sensing body has detected an optical signal, it is converted to an error signal informing of the working machine's structural deviation in two or three dimensional displacement.

Abstract: A static/dynamic multi-function measuring device for linear unit, includes a foundation, a multi-direction sliding unit having eddy current detector, a linear motor, a linear unit with a sensing element and an optical measuring unit; the static/dynamic multi-function measuring device uses the linear motor to drive the multi-direction sliding unit with low friction to provide a non-contact measurement of a parallel alignment of the linear unit, a linear accuracy measurement of the linear unit, and a vibration measurement of the linear unit to detect the parallel alignment of the linear unit and the linear accuracy of a slide rail and so on, the static/dynamic multi-function measuring device also measures errors of the linear unit and a slide block moving in the vibrating and the rolling direction.