Abstract: A rotary switch device such as that used on the probe end of an articulated arm coordinate measurement machine is provided. The rotary switch having a housing with an axis of rotation. A first actuator is coupled to the housing. A first switch is coupled to the first actuator, the first actuator being configured to selectively close the first switch. A first electrical circuit is provided. A first antenna circuit is electrically coupled the first switch to the first electrical circuit, wherein the first electrical circuit and first antenna circuit cooperate to modulate an operating field when the first switch is closed. A reader circuit is arranged fixed relative to the axis of rotation, the reader circuit including a transmitter configured to emit the operating field and a receiver configured to detect the modulated operating field.

Abstract: An absolute position-measuring device includes a first subassembly having a measuring standard on which at least one code track is disposed, and a scanning unit with which, by scanning the at least one code track in a measuring direction, position signals are able to be produced, from which an absolute digital position value is able to be generated. The position-measuring device includes a second subassembly having at least one peripheral unit adapted to perform an additional or auxiliary function of the position-measuring device. The first subassembly and the second subassembly are connected to each other by a plurality of electric lines for the transmission of electrical signals. The first subassembly exclusively includes components which are suitable for use in a radiation area of a machine.

Abstract: A mounting aid for the alignment of a first graduation support in relation to a second graduation support of a position measuring system, the mounting aid including a spacer, which specifies a preset scanning distance between a first measuring graduation of the first graduation support and a second measuring graduation of the second graduation support. The mounting aid further including a connector having a structure to positively engage the first graduation support, wherein the connector is released from engagement with the first graduation support by displacing the connector with respect to the first graduation support and a protective cover that covers the measuring graduation.

Abstract: A sealed linear encoder for determining the relative position of a first object and a second object. The sealed linear encoder includes a scale unit arranged in a hollow body that is mounted to a mounting structure associated with the first object and includes a slot which extends in a direction of measurement. A scanning unit for scanning the scale unit and a carrier connected to the second object, wherein the carrier extends through the slot. Sealing lips arranged at the hollow body and abutting the carrier so as to seal the carrier and a cover form-fitted to the hollow body for covering at least the slot.

Abstract: A length measuring device for determining a relative position of two objects, which can be moved relative to each other. The measurement device, includes a carrier body which supports the measurement device and is connected with a contact area with a mounting area of one of the two objects and with a scanning arrangement connected with another one of the two objects and scanning the measurement device along a measurement direction. Wherein a torque on an end face of the carrier body in the measurement direction acts on the carrier body in such a way that the contact area of the carrier body is pressed against the mounting area.

Abstract: A position measuring device having a graduated scale carrier member which is secured to a holder is described. The graduated scale carrier member is secured to the bottom side of the holder, so as to float over a viscous liquid film. The holder, in turn, is elastically supported on a mount. The measuring graduation marking is scanned through the holder, which is preferably made of transparent glass.

Abstract: In a switch (50), a dimension between the first contact pin (51) and a swing lever (52) and between the second contact pin (52) and the swing lever (53) is set 5 mm. Accordingly, a detection value of the displacement sensor can be captured when a relative displacement not less than 5 mm is caused between the first and the second sliders, in other words, when the impulse or vibration caused by a contact of a probe against a workpiece is stilled, so that stable measurement is possible. In other words, the dimension of the workpiece can be accurately measured without being influenced by the impulse or the vibration caused when the probe touches the workpiece.

Abstract: A height gauge capable of being moved while confining a positional relationship between a probe and a workpiece with an easy posture is provided. A handle (21) is provided on a side of a column (12) having a probe (13) adjacent to a base (11). An air-floatation control switch (31) for controlling supply and cut-off of air to an air-floatation mechanism (19), a repeat switch (32), a cancel switch (33) are provided to the handle (21).

Abstract: The ball diameter automatic measurement device according to the present invention preferably comprises a displacement sensor, a dividing plate, a slider and a measurement controller. The displacement sensor measures the diameter of a ball positioned in a measurement position. The dividing plate holds a ball to be measured and reciprocates the same between a predetermined position and the measurement position. The slider rotates the ball in the predetermined position by a predetermined angle when the dividing plate is moved. The measurement controller stores and outputs measured values obtained by repeated measurement and measurement after the rotation of the predetermined angle. According to the device, it is possible to measure a ball diameter accurately without being influenced by body temperature, air temperature and individual workmanship when the diameter of a ball is measured.

Abstract: An inside of a U-shaped frame of a micrometer is made of a material having a smaller linear thermal expansion coefficient than an outside of the U-shaped configuration. Furthermore, a spindle can be made of a material having an extremely small linear thermal expansion coefficient. Accordingly, thermal deformation of the micrometer can be made smaller, and measurement accuracy is maintained even under a widely changing temperature.

Abstract: A method of correcting measurement errors in a measurement robot resulting from relative movements between an object to be measured and a measurement probe comprises the steps of detecting the accelerations at the probe, detecting the accelerations at or close to the object to be measured, calculating the correction data reproducing the relative movement from the measured accelerations and correcting the measured values recorded by the measurement robot with the correction data. The robot serves for determining shape and/or coordinates of an object to be measured, with a base unit, at least one movable measurement probe arranged on the base unit and a holding device arranged on the base unit for holding the object to be measured, wherein first acceleration are arranged on or close to the measurement probe, and second acceleration pickups are provided on the base unit, and an evaluation device is provided which calculates correction data from the measured data of the first and second acceleration pickups.

Abstract: A linear displacement measuring apparatus in which a spindle is disposed movably forwardly and backwardly to a measuring apparatus main body, a detector for detecting a linear displacing amount of the spindle is disposed to the inside of the measuring apparatus main body and a water-proof mechanism is disposed to a liquid intruding path in communication with the detector for preventing liquid from intruding.

Abstract: The apparatus comprises a bearing plate (1), a slideway (2) and a girder (3) which are perpendicular to the bearing plane of the bearing plate, a slide (4) with tracer head (5) movable along the slideway and a drive plate (7) located in front of the slide and stabilized by guides (8, 9) independent of the slide. The plate (7) and the slide (4) are connected by balancing (10) and damping (11) springs. A drive device by cable (13) and return pulleys (15-18) which is moved by a movement generator (19) is connected to the plate (7) and is entirely supported by the girder (3) and the bearing plate (1). A counterweight (14) inserted in the circuit of the cable (13) balances the weight itself of the movable elements (4, 7). A body (63) for protection against impacts is fastened to the girder (3) and to the bearing plate (1).

Abstract: A length measuring apparatus comprises a measuring device for detecting the position of a marker along a measuring path. The measuring device and the marker are encapsulated in a hermetically sealed housing. A follow-up device is provided for moving the marker to a predetermined position of registration relative to a detectable point, which is disposed outside the housing and is movable along a path which is parallel to and laterally aligned with the measuring path. The follow-up device comprises a device for establishing a non-contacting link between the detectable point and the marker. To provide such an apparatus which has a relatively simple design and a low susceptibility to disturbance and can achieve a high accuracy of measurement. The apparatus comprises a strip that is trained around reversing end pulleys and has a course that extends along the measuring path. The marker is carried by the course.

Abstract: A coordinate measuring machine capable of selectively setting the origin of measurement by origin point blocks each of which are provided on the base plate of the coordinate measuring machine. In a condition where dust becomes attached to the origin point block, the origin of measurement is missed and the accuracy of the measurement is therefore unreliable. The machine in this invention is arranged to employ cover devices (40A, 40B, 80) to enclose origin point blocks (50A, 50B, 70) respectively and to occasionally expose a portion thereof by an opening and closing motion. That is, only when setting the origin of measurement is the cover opened. This prevents the origin point block from collecting dust thereon suspended in the air. In this end, the origin of measurement can be set precisely to execute an accurate measurement of the object to be measured.

Abstract: A protective housing for accommodating a scale member and a longitudinally movable scanning unit of a length measuring system comprises a housing tube, which is adapted to support the scale member and preferably has a basically rectangular cross-section and in one narrow side wall is formed with a slot, which is adapted to receive an actuating member, which is adapted to be coupled to the scanning unit, and which housing tube is adapted to be closed at both ends by end closures, which are adapted to hold the housing in position and protrude beyond the ends of the housing tube.