3084results about "Mechanical diameter measurements" patented technology

The present invention is directed to automated apparatuses and methods for measuring fastener hole depth, fastener length, countersink depth and/or hole diameters in a workpiece (or other object) in an automated and extremely rapid, efficient and accurate manner. The apparatuses may be operably connected with a power source and with one or a plurality of computers or other data collection devices to transmit fastener hole depth, countersink depth and/or hole diameter measurement data and/or information to them each time that a fastener hole is measured, while the apparatus is continuously measuring fastener holes (i.e., with no interruptions). Extremely advantageously, using only one hand, and by only squeezing a trigger only one time, an operator of such an apparatus may successfully and very rapidly and accurately perform more than one, or all three, of the following functions: (i) normalize the apparatus relative to one or a plurality of fastener holes and/or workpiece surfaces; (ii) make one or a plurality of accurate measurements; and (iii) transmit the one or more measurements from the apparatus to one or a plurality of computers and/or other data collection devices for, for example, recordation, storage, manipulation, other use and/or the like.

A downhole caliper instrument utilizing a magneto resistive sensor to determine the position of a caliper arm which extends to touch the surface of the borehole wall.

An apparatus for checking the diameter of crankpins of a crankshaft in the course of the machining in a grinding machine includes a Vee-shaped reference device, a measuring device associated with the reference device and including a feeler axially movable along the bisecting line of the Vee-shaped reference device, and a support device with a first arm rotating with respect to a support arranged on the grinding-wheel slide and a second arm rotating with respect to the first and carrying the Vee-shaped reference device.A guiding mechanism includes a limiting device, with mutually abutting surfaces and coupled to the support device, that guides the displacement of the reference device along a trajectory substantially parallel to the profile of the grinding wheel, allows the engagement of the reference device on a crankpin to be checked while the latter is orbitally moving, and does not interfere with the displacements of the support device caused by the orbital motion of the crankpin in the checking condition.

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.

The invention relates to screw thread automatic detecting equipment and a method thereof; the main frame of the equipment is a fixing frame, a screw thread detecting pin is driven by a working air cylinder fixed at the center of the outer part of the top side to move downwards to carry out detection, a product detecting fixture is arranged on a base of the fixing frame, and the position of a screw thread hole of the product to be detected is arranged right below the screw thread detecting pin; a sensor is arranged at one side of the screw thread detecting pin, the front end part of the sensor is vertical to the screw thread detecting pin and is arranged at a distance from the screw thread detecting pin, the sensor is triggered to carry out detection by the insertion of a screw thread detecting rod at the front end of the screw thread detecting pin or by different working states generated by preventing from moving downwards. The equipment fully utilizes the difference of pore diameter of an extruding and tapping product before tapping and after tapping to carry out judgment and identification, and full-inspection identification and marking are automatically carried out by the equipment, thereby being beneficial to realizing assembly line work, avoiding changing or lagging the production flow, reducing the risk on producing defective products in the process and having remarkable economic benefit.

The invention is directed to a gauge assembly that is used to measure parameters of camshaft journals or other objects with cylindrical surfaces. The gauge assembly includes two gauges, the first is an air snap gauge and the second a linear variable differential transducer. The air snap gauge is slidingly attached to the base and the second gauge is attached to a base as well. Air resistance measurements, taken through the air snap gauge provide a measure of diameter of the journal while relative linear motion between the base and air snap gauge, measured by the second gauge, provides a measure of journal runout relative to the center axis of the camshaft. Control logic is used to calculate other parameters such as runout of a journal relative to another journal on a common camshaft.

The invention discloses a depth aperture internal diameter measurement device, comprising a tapered block, a sleeve, three measurement rods, a spring, a push rod, a sleeve rod, a thread sleeve rod, a three-claw chuck and an internal diameter dial indicator. The conical surface of the tapered block is uniformly provided with three sliding grooves which are formed along the generatrix direction of the tapered block; the included angle between each sliding groove and the axis of the tapered block is 45 degree; the wall of the sleeve is provided with three through holes which are uniformly distributed along the circumference; three measurement rods pass through the through hole in the wall of the sleeve; and one end of the measurement rod is clamped inside a sliding groove. In the invention, the included angle between the sliding groove and the axis of the tapered block is 45 degrees and the displacement of the measurement rod along the radial direction is turned into an axial direction, which avoids the intermediate transfer between the levers in the traditional measurement, has more accurate measurement and can measure the maximum and minimum diameter of any cross section.

The invention discloses a deep hole inner diameter measuring system which comprises a measuring main body moving in the axial direction of a deep hole and a measuring control device connected with the measuring main body. The measuring main body comprises a cavity, at least three rows of supporting rolling wheels, at least two stopping balls and a rotating measuring disc, wherein the supporting rolling wheels are evenly distributed outside the cavity, one supporting rolling wheel is provided with a driving wheel for driving, the stopping balls are evenly distributed outside the cavity, the rotating measuring disc is arranged at one end of the cavity, a plurality of eddy current displacement sensors for measuring the inner diameter of the deep hole are arranged in the radial direction of the rotating measuring disc, and the eddy current displacement sensors are designed to achieve high sensitivity of 20 mv/micrometer within the 1mm measuring range on the basis of the simple series resonance principle. The stopping balls, the driving wheel and the rotating measuring disc are driven by corresponding driving devices respectively. The measuring control device comprises a first control module, a second control module, a third control module and a measuring calculation module for processing voltage signals output by the eddy current displacement sensors and calculating the inner diameter of the deep hole. According to the system, the inner diameter of the deep hole can be measured, and the measuring precision of the inner diameter of the deep hole can be improved.

A processing method for forming an insulated film on a surface of a substrate to be processed, through an oxynitriding treatment includes the steps of nitriding a surface of the substrate by irradiating plasma containing nitrogen atoms onto the substrate, and oxidizing the surface of the substrate, which has been nitrided, by irradiating plasma containing oxygen atoms.

The invention relates to a logging method and apparatus adapted for use in non-circular boreholes which, in one embodiment, comprises the use of a first and a second sonde, each sonde having: a pad adapted for contact with the borehole wall, at least a sensor on each pad, and an extendable arm for keeping the pad against the wall of the borehole. The first and second sonde produce measurements related to the same property of the formations, and the first and the second sonde are connected so as to keep the pads aligned with a 90 DEG azimuthal spacing therebetween.

A random number generating circuit comprises a pseudo random number generating circuit that generates pseudo random numbers of an M-sequence; a physical random number generating circuit that generates physical random numbers; and a modulation circuit that modulates the physical random numbers generated by the physical random number generating circuit with the use of the pseudo random numbers generated by the pseudo random number generating circuit. The pseudo random number generating circuit can generate pseudo random numbers of a plurality of the M-sequences, and switches the M-sequences generated by the pseudo random number generating circuit based on the physical random numbers generated by the physical random number generating circuit.

A deformation of a rotating tire on a road surface is calculated the following. At first, time series data of acceleration extracted from measurement data of acceleration corresponding to one round of tire rotation is subjected to a time integration of second order to obtain displacement data so as to calculate the deformation at the tread portion. The time series data of acceleration and the displacement data in the non-contact region excluding a road surface contact region on the tire circumference at the tread portion are respectively approximated to calculate a first and a second approximation curves. The two approximation curves are subtracted respectively from the time series data of acceleration and the calculated displacement data, thereby extracting time series data of acceleration due to tire deformation and obtaining the deformation at the tread portion.

According to the measuring head, the zero point and the amount of front travel settings are facilitated. Firstly, the amount of front travel is set by allowing contacts 34, 34 to abut a master 50. Then, rotating the lever 42 in a direction indicated by an arrow E, or a close position, causes the bearing member 36 to be fastened to the swinging support shaft 28. At this time, a restoring force, or a force caused by reaction, of the bearing member 36 transferred from the bearing member 36 through the arm 38, cam plate 40 and shaft 48 to the measurement lever 32 causes the measurement lever 32 to deflect by an amount that equals to the amount of front travel, and therefore from the position where the amount of front travel is set to the zero point position. This automatically sets the zero point position.

A body 1 placed thereon with a table 35 put thereon with an object to be measured W, and a portal frame 41 supporting both ends of rail 43 to the body through pillars 42A and 42B, the rail being placed above the table 35 and extending along a moving direction of a pair of probes 91A and 91B, are provided. A pair of sliders 51A and 51B are movably supported by the rail 43. The pair of the probes are extended downward from the sliders 51A and 51B to be abutted to the object W put on the table 35. The flexural deformation of the probes 91A and 91B is decreased due to the shorter length of the probes 91A and 91B, so that the high accurate measurement is achieved and a relative measurement is omitted.

A diameter measure tool for a groove of an inner hole is provided. A pin pierces through middle holes of an upper stent and a lower stent and is linked with the upper stent and the lower stent through a flat washer, a spring washer and a nut. A locking stud pierces through a ring groove which centers on the axis of a pin hole on the upper stent and is installed in a thread hole of the lower stent to be locked through a nut. The end of the locking stud exposing out of the upper stent is equipped with a knurl high nut for locking the upper stent and the lower stent. Two probes are respectively fixed in the screw holes on the same ends of the upper stent and the lower stent. A percent meter is fixed in a hole on the other end of the lower stent. A measuring stud is fixed in the screw hole on the other end of the upper stent. The two probes are put into a groove of a work piece hole by holding the upper stent and the lower stent with hands. Under the elastic function of the percent meter probe, the two probes of the measure tool are arranged on the diameter position of the groove. With the match of a percent scale or a standard hole, the diameter of groove of the inner hole can be measured rapidly and precisely according to the number indicated by the pointer of the percent meter. The measure tool also can substitute a common inner diameter scale to measure the inner hole of a common part.

The invention relates to the technical field of clamping devices, in particular to clamping equipment for part machining. The clamping equipment comprises a fixing platform; a fixing mechanism and a driving mechanism are arranged below the fixing platform; the fixing mechanism comprises two fixing seats; a transversely-arranged bidirectional screw rod is rotationally connected between the two fixing seats; a sliding plate is in threaded connection to each of two threaded parts of the bidirectional screw rod; two sliding blocks are arranged between the two sliding plates; fixing blocks for fixing steel pipes are arranged on the two sliding blocks; compression springs are fixedly connected between the fixing blocks and the sliding blocks; first measuring mechanisms are connected between thefixing blocks and the sliding blocks; and a second measuring mechanism is further fixed to the upper end of the fixing platform. The first measuring mechanisms are used for measuring the pre-tightening force on the clamped steel pipes in real time, the bidirectional screw rod is rotated, the pre-tightening force on the steel pipes is close to the reference pre-tightening force, and thus the pre-tightening force for clamping the steel pipes is measured, regulated and controlled.

An apparatus and a relevant method for checking a crankpin (18) of a crankshaft (34) positioned on a numerical control grinding machine where it is worked includes a gauging head (39) with a Vee-shaped reference device (20) and a feeler (17), axially movable along a translation direction, that touches the crankpin surface, and an articulated support device (5,9,12) connected to the grinding-wheel slide (1), carrying the guaging head and allowing the reference device (20) to keep contact with the crankpin during its orbital motion around the main rotation axis (0) of the crankshaft. Rough values corresponding to a transducer (41) signals provided at predetermined angular positions of the crankshaft are stored and are processed also to compensate alterations caused both by contact between the sides of the Vee-shaped reference device and the surface of the crankpin to be checked, and by variations of the angular arrangement of the Vee-shaped reference device in the course of orbital rotations of the pin.