Abstract: A screw measuring apparatus comprising: an internal-dimension measuring unit for obtaining internal-dimension information Dw of a female screw placed on a coordinate measuring machine when the stylus-tip sphere having the diameter selected according to the pitch of the female screw is butted against the screw groove of the female screw; and an effective-diameter calculating unit for obtaining effective-diameter information De of the female screw from the internal-dimension information Dw obtained by the internal-dimension measuring unit, diameter information 2 r of the stylus-tip sphere, and thread angle information ? and pitch information P of the female screw, by using an effective-diameter calculation expression De=Dw+2 r×cos ec(?/2)?(P/2)×cot(?/2).

Abstract: Provided is a probe observing device, including: a camera (230) for taking an image of a probe (210 ); an image processing unit (330) for processing data on the image taken by the camera (230); a monitor (400) for displaying the image data processed by the image processing unit (330); and a mouse (500) for inputting an instruction for image processing through manual operation. The image processing unit (330) includes an image data processing unit (350) for processing the image data in accordance with the instruction inputted by the mouse. The camera (230) includes a low-magnification lens system, and is provided to be fixed in position with respect to the probe (210) such that the probe (210) enters the view field of the camera (230).

Abstract: A probe alignment adjuster (10) for adjusting an angle of a probe (22) for measuring a configuration of a workpiece has an angle adjuster (21) capable of adjusting the angle of the probe so that the angle aligns with a reference axis line. Since the angle of the probe and a hole angle can be accurately coincided in measurement by coinciding the angle of the probe (22) and the reference axis line, interference with a sidewall caused in inserting into a deep hole can be avoided, thereby preventing damage on the probe.

Abstract: The present invention has an object to provide a measuring apparatus which can surely prevent the collision of a moving member.

Abstract: The present invention has an object to provide a measuring apparatus which can surely prevent the collision of a moving member.

Abstract: A probe alignment adjuster (10) for adjusting an angle of a probe (22) for measuring a configuration of a workpiece has an angle adjuster (21) capable of adjusting the angle of the probe so that the angle aligns with a reference axis line. Since the angle of the probe and a hole angle can be accurately coincided in measurement by coinciding the angle of the probe (22) and the reference axis line, interference with a sidewall caused in inserting into a deep hole can be avoided, thereby preventing damage on the probe.

Abstract: A stylus 20 is mounted directly on detector 32 and the detector 32 is mounted directly on a holder 10. Thus, an vibration-type contact detection sensor 1 is formed in a state in which the holder 10 and the stylus 20 are placed out of contact with each other and the stylus 20 and the detector 32 are placed in contact with each other. Therefore, attenuation of vibration and status change of the stylus 20 by the holder 10 can be circumvented and vibration and status change of the stylus 20 can be propagated directly to the detector 32, so that the detector 32 can detect vibration and status change of the stylus 20 with high sensitivity, and contact with a workpiece can be detected with high sensitivity.

Abstract: A stylus 20 is mounted directly on detector 32 and the detector 32 is mounted directly on a holder 10. Thus, an vibration-type contact detection sensor 1 is formed in a state in which the holder 10 and the stylus 20 are placed out of contact with each other and the stylus 20 and the detector 32 are placed in contact with each other. Therefore, attenuation of vibration and status change of the stylus 20 by the holder 10 can be circumvented and vibration and status change of the stylus 20 can be propagated directly to the detector 32, so that the detector 32 can detect vibration and status change of the stylus 20 with high sensitivity, and contact with a workpiece can be detected with high sensitivity.

Abstract: A collision preventing device includes: a holder 20; an annular collision detecting portion 30; holding means 40; and switching means 50. The holder 20 is attached to a non-contact probe 18. The annular collision detecting portion 30 covers the non-contact probe 18. The holding means 40 holds the collision detecting portion 30 displaceably and returnably in a Z-axis direction with respect to the holder 20. The switching means 50 detects a relative displacement occurring between the holder 20 and the collision detecting portion 30 and commands a driving system to stop the movement of the non-contact probe 18 or move the non-contact probe 18 in a escape direction. Accordingly, it is possible to prevent the breakage of the non-contact probe 18, the main body of the measuring apparatus, the work, and the like due to the collision.

Abstract: A non-contact surface roughness-measuring machine is provided which can avoid damage caused by collision with a workpiece and set a non-contact surface roughness probe at an appropriate position relative to a measurement surface of the workpiece. A non-contact surface roughness probe and a touch-signal probe are attached at a tip end of an arm of a coordinate measuring machine. A stylus of the touch-signal probe is protruded relative to a detection surface of the non-contact surface roughness probe, in which the protrusion amount is within an optimum distance of the non-contact surface roughness probe relative to the measurement surface. When the probes are brought close to the workpiece and the touch-signal probe detects contact, the non-contact surface roughness probe is set within the optimum distance relative to the workpiece.

Abstract: A simple three-dimensional measuring machine 1 having a simple structure which enables the assembly thereof by the end users, and a packing case 100 for facilitating a transport of the machine 1. A pair of columns used when necessity arises and the X axis member 5 are assembled and disassembled and the X slider 6 and the Y slider 7 are also assembled and disassembled through a first means 20 for adjusting the angles therebetween. The Y axis member 8 and the Z slider 9 which has a Z axis member 11 are connected through a second means 30 for adjusting the angles therebetween. The packing case 100 for transfer has a first packing case to house the column 3 and the height adjustment pedestal 2, a second packing case to house the X axis member 5 and the X slider 6, a third packing case to house the Y axis member 8 with the Y slider 7 and the Z slider 9 with the Z axis member 11 connected through the second means 30 for adjusting the angle and a Y-Z axis cover 17, and an exterior packing case.

Abstract: A drop/insert selecting system for an optical transmission system has a decreased circuit scale, by providing a switching unit (4,4') having a plurality of input terminals for receiving a plurality of input channels and a plurality of output terminals, each of the input channels conveying a frame synchronization signal and a channel number. At at least one drop/insert unit (51,52,51',52') is provided for sequentially generating channel preselection signals until a frame synchronization is established and for dropping or inserting necessary signals from or into a corresponding one of the necessary channels incorporated into the drop/insert units when a frame synchronization is established. A channel selecting unit (6,6a,6b) is provided for generating a plurality of channel selecting signals in response to each of the channel preselection signals, each of the channel selecting signals functioning to connect each of the output terminals to one of the plurality of input terminals.

Abstract: The present invention relates to an inner diameter measuring machine, wherein a displacement measuring and displaying device provided with a group of first switches for setting measuring conditions are disposed on the generally central portion of a main case of measuring machine. One end of a casing is formed to provide a head having a measuring element or elements, and the other end thereof is formed to provide a handle portion. In the handle portion, two sets of groups of second switches having a switch and the like for holding a displayed value during measuring are provided, so that one hand operation can be performed during measuring. Further, in the handle portion, a plunger axially movable in cooperation with a spindle is provided, whereby this plunger is moved through a control lever rotatably supported on the end portion of the casing.