摘要:
A system for finely feeding a movable member being movable relative to a stationary member.This fine feed system is constructed such that the movable member is provided with a fine feed mechanism, which includes a screwshaft and a nut member threadably coupled to the screwshaft and capable of being suitably clamped against the stationary member. A control device is provided for causing a driving motor to drive the screwshaft on condition that a detector to regulate the relatively movable range between the screwshaft and the nut member is not in operation, while, for causing the driving motor to operate so that the screwshaft and the nut member can return to original relative positions, on condition that the nut member is not clamped against the stationary member. The fine feed of the movable member can be instantaneously performed no matter where the movable member may be in its movable range.
摘要:
A coordinates measuring head unit is provided, which is compact, inexpensive, and capable of performing high-precision measurements at high speeds, and facilitates, for example, measurements conducted on machine tools or in-situ measurements on transport lines. The head unit includes: drive means (an X-axis drive section, a Y-axis drive section, and a Z-axis drive section), an integrated housing for accommodating the drive means, and fixture means (fixture surface). The drive means allows a probe to be moved by computer numerical control along a plurality of drive axis, which are orthogonal to each other, and abut against a measuring target to measure the dimensions of the measuring target. The fixture means is provided on one of side surfaces of the housing to attach one of the drive means to a support (a support on a stand secured to a base).
摘要:
A coordinate measuring machine has a coordinate measuring machine body and a controller. The coordinate measuring machine body has a probe having a measurement piece and a drive mechanism for driving the probe. The probe has a drive unit for driving the measurement piece. The controller includes a first measuring unit and a second measuring unit. The first measuring unit measures a displacement of the measurement piece driven by the drive unit. The second measuring unit measures a displacement of the probe. The measurement accuracy of the second measuring unit is lower than the measurement accuracy of the first measuring unit.
摘要:
A measuring instrument includes a detector that outputs a measured value, a digital display unit, an analog display unit having a plurality of display segments, and a display controller. The display controller includes: a tolerance range display unit that lights or blinks display segments corresponding to a preset tolerance range relative to a preset value; a first determiner that obtains a difference between the present value and a present measured value and determines whether the difference is within an analog display range wider than the tolerance range; a difference display unit that lights a display segment corresponding to the last one or the last two digits of the present measured value when the first determiner determines that the difference is within the analog display range; a second determiner that determines whether the difference is within the tolerance range; and an acceptance or rejection display unit that displays a result determined by the second determiner.
摘要:
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 2r of the stylus-tip sphere, and thread angle information α and pitch information P of the female screw, by using an effective-diameter calculation expression De=Dw+2r×cosec(α/2)−(P/2)×cot(α/2).
摘要:
Provided are a measuring section (210) including a vibrating contact-type probe having a measuring force detection circuit (219) which detects a measuring force acting to the contact portion (212); a moving unit (a three-dimensional drive mechanism (300), a vertical movement drive mechanism (220)) that moves the measuring section (210) relative to a workpiece surface (S); and a drive control unit (400) that controls the moving unit based on the magnitude of the measuring force output from the measuring force detection circuit (219). The drive control unit (400) includes: a scanning-measurement control section (410) that moves for scanning the contact portion along the workpiece surface (S) with the measuring force maintained at the designated scanning measuring force; and a touching-measurement control section (420) that conducts touching-measurements on the workpiece surface (S) in a repeated manner, in the measurements the contact portion (212) being adapted to intermittently contact the workpiece surface (S) at a touch detecting measuring force.
摘要:
A surface texture measuring instrument has a rotary table on which a workpiece is rotatably mounted, a Z-axis slider capable of moving in a Z-axis direction parallel to a rotation axis of the rotary table, an X-axis slider that is held by the Z-axis slider and is advanceable and retractable in an X-axis direction orthogonal to the rotation axis, a first arm that is held by the X-axis slider and is rotatable around a center line parallel to the X-axis, a second arm that is held by the first arm and is advanceable and retractable in a direction orthogonal to the X-axis, and a detector held by the second arm to measure a surface texture of the workpiece.
摘要:
A mobile communications terminal having a communicator for transmitting and receiving a signal to/from a base station is connected to a measuring instrument through wireless medium and a cable. A control processing software stored in a memory of the mobile communications terminal is executed. The mobile communications terminal converts the measurement data acquired by measurement of the measuring instrument into the same format as the signal transmitted to and received from the base station and the converted measurement data is read into a controller to store in a storage. The measurement data is transmitted from the communicator to the base station to be stored in a data storage and published on a web site in a manner that third party can check.
摘要:
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.
摘要:
In an optical measuring apparatus so structured as to hold a CCD camera and a laser displacement gauge so that they can be three-dimensionally driven at the same time on a stage, a jig including two straight, non-parallel line segments which can be measured by the CCD camera and the laser displacement gauge in the projection plane along the Z-axis direction is mounted on the stage; the straight line segments are measured in the projection plane by the CCD camera and the laser displacement gauge to obtain formulas of these segments; the obtained formulas are subjected to the arithmetic operation to calculate an offset value of the X and Y plane coordinate centers between the CCD camera and the laser displacement gauge; and the offset value is used as position calibration data of the CCD camera and the laser displacement gauge to perform position calibration of the measurement data.