126 results about "Gauge block" patented technology

The invention provides a calibration process and a calibration block of a contourgraph, and relates to the technical field of contour parameter calibration, in the calibration process of the contourgraph, first scanning data is obtained by scanning a gauge block calibration part of the calibration block, second scanning data is obtained by scanning a standard ball calibration part of the calibration block, and the first scanning data and the second scanning data are obtained based on a physical model among a probe, a rotating shaft and a sensor. The measuring height difference between the first calibration plane and the second calibration plane, the straightness of the inclined plane, the measuring diameter of the fitting circle, the actual height difference of the gauge block calibration part and the actual diameter of the standard ball calibration part are calculated, and the position relation among the probe, the rotating shaft and the sensor is calculated at least with the minimum straightness of the inclined plane as the constraint. The calibration data not only have the height of the gauge block and the diameter of the standard ball, but also introduce the straightness of the inclined plane, and the calibration data is increased, so that the calibration precision is improved, and the nonlinear error caused by the difference between a mechanical structure and a theoretical model can be reduced.

The invention relates to a high-precision small-angle generating device and method based on temperature regulation and control. Comprising a base, a hinge piece, a sine arm, a reflector, a gauge block, a temperature measurement module and a temperature control module. The temperature measuring module and the temperature control module are both installed on the outer wall of the gauge block. One end of the sine arm is rotationally connected with one end of the base through a hinge piece; the gauge block is mounted on the base, the other end of the sine arm is in contact with the gauge block, and the reflector is mounted on the sine arm; the height value h of the gauge block changes along with the change of the temperature, thereby pushing the sine arm to rotate around the rotation point of the hinge piece, and enabling the angle of the reflector to change. According to the invention, the temperature of the gauge block is regulated and controlled to generate a small angle, the temperature of the gauge block is in one-to-one correspondence with the generated angle change, and the influence of the environment temperature on the temperature of the gauge block is converted into the generated angle and the measured temperature, so that the harsh control requirement on the environment temperature is weakened by the mode; and the application scene of the small-angle generator is expanded.

The utility model relates to the technical field of gauge block grinding, in particular to a gauge block machining grinding plate device which comprises a base, the middle end of the top of the base is fixedly connected with an n-shaped frame, an electric push rod is fixedly installed at the middle end of the top of the n-shaped frame, and the extending end of the electric push rod is fixedly connected with a movable plate. Fixing blocks are fixedly connected to the left end and the right end of the bottom of the movable plate, driving threaded rods are movably connected to the inner sides of the two fixing blocks through bearings, and driving motors fixedly connected with the right sides of the driving threaded rods are fixedly mounted on the right sides of the fixing blocks. Through cooperation of the structures, the device has the advantage of being good in grinding quality, and the problems that most of grinding plates on existing grinding equipment grind gauge blocks in a reciprocating type linear track or a reciprocating type annular track, the same part of the gauge blocks can be repeatedly ground in the grinding mode, and the grinding efficiency is poor are solved. And grinding traces caused by repeated grinding can influence the surface quality of the gauge block.

The invention belongs to the field of precision measuring tool automation, and discloses an automatic gauge block feeding device based on a manipulator, which comprises an automatic gauge block feeding and discharging mechanism and a manipulator grabbing mechanism, in a system comprising a material bin, a material disc, a three-axis material taking mechanism and a vacuum material suction module, feeding of a measured block and a standard gauge block to a transferring platform and subsequent discharging and recycling are automatically completed, a robot arm grabbing mechanism integrates a visual positioning module and a multi-degree-of-freedom robot arm cantilever, and the tail end of the robot arm grabbing mechanism is provided with a vacuum suction cup, a thin pneumatic claw and the like. The measuring block can be accurately positioned and automatically grabbed from the transfer platform for subsequent measurement. Through cooperation of the two mechanisms, the full-automatic, unmanned and lossless feeding process of the gauge blocks from storage, selection, conveying, visual recognition to accurate grabbing is achieved, the working efficiency and the gauge block processing precision are remarkably improved, the labor cost is reduced, and wide application prospects are achieved.

The invention relates to the technical field of laser scanners, in particular to a tracking type laser scanner precision calibration method, which comprises the following steps: selecting a standard block gauge with a corresponding thickness from a standard block gauge set, and constructing a gap simulation test piece or a step difference simulation test piece through lapping; acquiring a reference value of the simulation test piece by using high-precision metering equipment, driving a to-be-calibrated tracking type laser scanner to scan the simulation test piece at a plurality of measurement positions for multiple times, and recording original measurement data; based on the reference value and the original measurement data, a measurement error and a repeatability error are calculated, and the measurement precision of the tracking type laser scanner is evaluated; and if the measurement precision does not meet the preset standard, establishing a segmented error model through multi-distance data acquisition, calibrating compensation parameters and dynamically correcting a measurement value in real time. The precision of gap and order difference measurement of the tracking type laser scanner can be improved, the cost is low, and the operation is convenient.

The present invention discloses a method for measuring the angular indication error of a laser tester for blade included angle, comprising the steps of: (1) manufacturing a blade included angle gauge block; (2) selecting a blade included angle gauge block; (3) obtaining the measured angular value of the gauge block to be measured; and (4) calculating the angular indication error of the laser tester for blade included angle. By manufacturing a blade included angle gauge block with a reasonable structure, the present invention makes the pattern of the laser of the laser tester for blade included angle reflected on the arc-shaped scale disk clear through the blade included angle gauge block, greatly improving the accuracy of measuring the angular indication error of the laser tester for blade included angle. At the same time, a method for measuring the angular indication error of the laser tester for blade included angle with simple and complete method steps is provided, facilitating the subsequent measurement operation of the angular indication error of the same type of equipment to be inspected.

The invention relates to a measuring tool, comprising: a gauge rod; the number of the clamps is two, each clamp comprises a first clamp and a second clamp, the first clamp and the second clamp are matched to form a first clamping space and a second clamping space, and the meter rod is arranged in the first clamping space in a penetrating mode and detachably connected with a clamp body; the detection piece comprises a positioning pin and a measuring meter, the positioning pin is connected with the second clamping space of one clamp, a body of the measuring meter is connected with the second clamping space of the other clamp, and a probe of the measuring meter is opposite to the positioning pin in position. During measurement, the standard gauge block is used to position the positioning pin and mark the zero point of the dial indicator, and then the positioning pin is locked and fixed. Then the measuring tool is placed at the annular groove to be measured, the probe is stretched out and drawn back to cross the interference structure and abut against the inner wall and the outer wall of the annular groove to be measured of the cylinder body with the positioning pin, the value of the measuring meter is read, the wall thickness value of the cylinder body at the annular groove is obtained, rapid measurement and verification are achieved, and batch quality risks are avoided.

The utility model discloses a ceramic gauge block grinding and calibrating device, which relates to the technical field of ceramic gauge blocks and comprises a bottom plate, an L-shaped plate is fixedly connected to the upper end of the bottom plate, an electromagnetic chuck is fixedly connected to the lower end of the L-shaped plate, and a moving block is electromagnetically attracted in the electromagnetic chuck. A size measuring instrument is fixedly mounted at the lower end of the moving block, a protective ring is fixedly connected to the outer surface of the size measuring instrument, a controller is fixedly connected to the upper end of the L-shaped plate, the controller is in signal connection with the electromagnetic chuck and the size measuring instrument, a placement groove is formed in the upper end of the bottom plate, and a machining table is fixedly connected to the interior of the placement groove; and when the size of the ceramic is changed, the deviation position of the ceramic can be corrected through the controller, so that the ceramic can be machined through the cutter, and the ceramic can be calibrated more quickly and conveniently.

The invention belongs to the technical field of gas chambers, and particularly relates to a dry-type gas chamber piston sealing wear detection device and method, and the device comprises a mounting rack, a measurement box disposed on the mounting rack, and an extraction handle. The extraction handle is detachably connected with the measuring box and the mounting frame; the measuring box comprises a cuboid shell with a top opening, a measuring block is arranged in the shell, one end of the measuring block is connected with one side wall of the shell through a spring, an opening is formed in the side wall opposite to the side wall, and the opening allows a part of the measuring block to penetrate through the opening and extend out of the shell; and a gland is arranged at the top of the measuring box. By applying the online detection device for the sealing wear of the piston of the gas chamber, the wear condition of the sealing rubber strip can be measured under the normal operation condition of the gas chamber, and the original operation process is not changed, so that online detection is realized.

The invention discloses a non-destructive modified vernier caliper and a method for measuring the bottom wall thickness of a narrow cavity, relates to the technical field of mechanical measurement tools, and aims to solve the problem of measurement of the bottom wall thickness of a narrow cavity of a spaceflight large shell section part. The caliper comprises a vernier caliper body, cylindrical ball top contacts are fixed at the lower ends of two caliper feet, a supporting block is slidably arranged on a main caliper, a positioning block is fixed on an auxiliary caliper, and a dial indicator is mounted on the positioning block; a clamping pin lengthening block can be connected between the clamping pin and the contact, all the components are connected through plug-in screws with soft copper pads, key components are made of 45 # steel which is blued after quenching, and the overall precision reaches 0.01 mm. The invention also discloses a measuring method, which comprises the following steps of: after zero calibration of the standard gauge block, extending the long contact into the cavity, arranging the short contact outside, and calculating the wall thickness according to a formula. The device can go deep into a narrow cavity for measurement, has the advantages of high precision, low cost, convenient operation and no damage, and is suitable for high-precision measurement requirements in the fields of spaceflight and the like.

The invention relates to the technical field of industrial three-dimensional part measurement, and discloses a standard gauge block for measuring an industrial three-dimensional part, which comprises a measurement standard block body and a measurement system of mobile phone software, a color block is arranged outside the measurement standard block body, a two-dimensional code is installed outside the measurement standard block body, and the color block is connected with the two-dimensional code. And a magnetic attraction block is fixedly mounted in the measurement standard block body. According to the standard gauge block for measuring the industrial three-dimensional part, through combination of software and hardware, a measurement standard block body with a standard size is firstly created, and through photographing of mobile phone software, image processing and recognition, algorithm addition and spatial three-dimensional calculation of the measurement standard block body, the size of the part in each direction in a picture is calculated; if the shot part is an article trained by the system, automatically marking the length, width, height and key overall dimension of the part by software; if the part is a non-trained part, software automatically marks a line on the picture to mark measurement data, so that a user can conveniently and intuitively check and export the data.

The present invention belongs to the technical field of motor assembly, and particularly relates to a method for improving the assembly quality of high-power density motors, comprising the following steps: (1) Monitoring the perpendicularity of the bearing positioning step with a gauge block; (2) Hand-held positioning method for hot sleeving the bearing; (3) Axial hammering method for the bearing; (4) Installation and alignment method for the outer ring of the cylindrical bearing; (5) Tightening the bearing housing symmetrically and checking the bearing installation quality by the disk rotation method; (6) Monitoring the clearance between the inner and outer covers and the shaft with a feeler gauge; (7) Four-point symmetric knocking method for the end cover; (8) Disk turning auscultation method. By analyzing the influencing factors of phenomena such as internal rubbing sound of the motor, rubbing of the inner and outer covers against the shaft, shaft movement, large bearing vibration, large body vibration, abnormal bearing sound, and high bearing temperature, the above assembly method is designed, which can achieve the effects of improving the motor assembly quality and extending the service life of the motor.

The utility model discloses a track gauge block detacher for a railway track, which relates to the field of track traffic, and comprises a sleeper, a track gauge block, a steel rail and a stress application rod, the lower end of the stress application rod is detachably connected with a buckle iron sheet device, the buckle iron sheet device is rotatably connected with an eagle beak bayonet device through a positioning bolt, and the stress application rod is slidably connected with a sliding sleeve device. According to the gauge block dismounting device, gauge blocks of different specifications can be dismounted on the premise that the eagle beak bayonet device is not replaced, the gauge block dismounting device is very convenient to use, in addition, the sliding sleeve device is matched with the pull rod device, and the dismounting efficiency is improved. Stable buffering force is applied to the eagle beak bayonet device to keep a proper posture, the eagle beak bayonet device is prevented from being stuck, the sliding sleeve device is moved up and down, and the opening and closing degree of the eagle beak bayonet device is adjusted through the pull rod device, so that a worker does not need to bend down to adjust with hands, the labor intensity of the worker is reduced, and the track maintenance efficiency is greatly improved.

The invention relates to a high-precision gauge block support device which comprises a measuring instrument combination, a zero-clearance sliding device and an eccentric fine adjustment device. And the zero-clearance sliding device and the eccentric fine adjustment device form an adjustable main body which is arranged on the measuring instrument combination. Gaps can be eliminated under the action of the elastic force of the spring when the device moves up and down; and meanwhile, gaps caused by abrasion generated in the movement process of mechanical matching can be eliminated.

The utility model relates to the technical field of aluminum alloy hub manufacturing, and discloses a hub center hole detection plug gauge which comprises a gauge seat, a telescopic gauge block is slidably connected to the gauge seat, the telescopic gauge block is arranged corresponding to a hub center hole and is used for measuring the aperture of the hub center hole, the gauge seat is provided with a sliding hole along the radial direction, and the sliding hole is provided with a through hole. The telescopic gauge block is connected in the sliding hole in a sliding mode through a connecting rod, the gauge seat is provided with a gauge head used for indicating measurement readings, and the gauge head is in transmission connection with the telescopic gauge block. The hub center hole measuring device overcomes the problems that in a traditional hub center hole measuring mode, an inner diameter dial indicator depends on the measuring technique of an operator, specific reading cannot be obtained when a go-no go gauge is used for measuring, and the efficiency is low when a three-coordinate measuring machine is used, the measuring precision is guaranteed, and the measuring efficiency is improved.

This invention discloses a track fastener, including a pre-embedded sleeve embedded in a sleeper, a base, a gauge plate, and a spiral spike. The gauge plate is mounted on the base, and both the base and the gauge plate have through holes for the spiral spike to pass through. The spiral spike is connected to the pre-embedded sleeve to fix the base and the gauge plate. The gauge plate has at least two adjustment slots that can be pressed against the rail base to adjust the track gauge. The distance between the contact point of each adjustment slot and the side of the rail base and the center of the spiral spike is different. The gauge plate is rotated to allow different adjustment slots to engage with the rail base to adjust the track gauge. This track fastener eliminates the spring clips and gauge blocks in traditional fastener systems, adding a gauge plate that can adjust the track gauge, resulting in better overall fastener integrity, fewer parts, easier adjustment, and reduced maintenance costs.

The invention provides an artillery firing pin protrusion measuring method, device and equipment and a medium. The method comprises the steps that an artillery firing pin is in a firing state and extends out of an artillery bolt body mirror surface, and a standard gauge block with a known nominal size is arranged on the vertical face of the firing pin; acquiring an image containing a firing pin and a standard gauge block; respectively and correspondingly segmenting the firing pin and the standard gauge block in the image through an image segmentation technology so as to obtain an image containing the firing pin and an image of the standard gauge block; based on the standard gauge block image and the image containing the firing pin, determining the boundaries of the two sides of the standard gauge block and the boundaries of the two sides of the firing pin in the axial extending direction of the firing pin, and determining the number of corresponding pixels between the two boundary points of the standard gauge block and the firing pin; the size of a unit pixel point is calculated and determined according to the nominal size of the standard gauge block and the number of corresponding pixel points between the two boundary points of the standard gauge block; and calculating and determining the mirror surface size of the firing pin protruding out of the artillery bolt body based on the obtained size of the unit pixel point and the number of corresponding pixel points between the two boundary points of the firing pin.

The utility model provides an intelligent storage and calibration device for standard gauge blocks, which relates to the technical field of storage and calibration devices for standard gauge blocks and comprises a storage cabinet, and an intelligent storage mechanism is arranged on the front side of the storage cabinet and in the storage cabinet. The intelligent storage mechanism comprises a PLC, the back face of the PLC is fixedly connected with the front face of the storage cabinet, the inner side wall of the storage cabinet is fixedly connected with pushing telescopic rods arranged at equal intervals, and each pushing telescopic rod is in signal connection with the PLC through a wire. According to the intelligent storage and calibration device for the standard gauge blocks, the pushing telescopic rods at the corresponding positions are manually controlled, and the multiple containing frames are fixed through the fixing strips, so that the standard gauge blocks on the corresponding containing frames are conveniently pushed by driving the pushing plates until the appropriate standard gauge blocks between the two partition plates on the containing frames are pushed to the needed positions, and the standard gauge blocks are conveniently stored and calibrated. The standard gauge blocks required in the storage cabinet can be conveniently taken and placed, and the use convenience of the standard gauge blocks is improved.

The utility model discloses an injection mold for an insulating gauge block capable of quickly demolding, which belongs to the technical field of injection molds and comprises a workbench, a motor II and four groups of limiting rods I are fixedly mounted at the top of the workbench, and a connecting plate is fixedly mounted between the tops of two groups of limiting rods I positioned on the same side; a two-way lead screw is fixedly mounted at the output end of the second motor, a first moving plate and a second moving plate are in threaded connection with the outer side of the two-way lead screw, an injection mold body for the lower insulation gauge block is fixedly mounted at the top of the first moving plate, and a mounting base is fixedly mounted at the bottom of the second moving plate; the injection mold body for the upper insulating gauge block is fixedly mounted at the bottom of the mounting seat, automatic demolding is generally carried out in a relatively stable and accurate manner, and compared with manual demolding, the demolding force and direction can be better controlled, physical damage to the insulating gauge block is reduced, and the production efficiency is improved. And the risk of flaws, deformation or breakage of the product due to improper demolding is reduced, and the appearance quality and the size precision of the product are guaranteed.

The utility model discloses full-automatic thickness measuring equipment, which comprises a rack, a wafer measuring assembly, a wafer turnover assembly, a wafer boat box positioning assembly and a wafer boat box cover opening assembly, a locking transverse groove is formed in the center of the lower end of the wafer boat box; three positioning grooves are formed in the lower end of the wafer boat box; the positioning assembly comprises a positioning plate horizontally connected to the outer side of the rack in a sliding mode, a containing plate longitudinally connected to the upper end of the positioning plate in a sliding mode and a transverse plate rotationally connected to the upper end of the positioning plate. Three positioning support columns are arranged at the upper end of the placing plate; and the transverse plate can selectively rotate in the positioning groove for locking and limiting. And the position of the wafer box placed on the placing plate can be automatically locked by the transverse plate, so that stable positioning precision is provided. The wafer boat box is automatically opened and closed and the wafer is taken and placed, manual drying is not needed in the whole process, interference of external environmental factors can be isolated, the cleanliness of the surface of the wafer is guaranteed, meanwhile, a fine adjustment assembly and a standard gauge block are arranged, and the measurement precision is high.

The invention discloses a quantitative test method and device for meshing phase consistency of duplex planetary gears, and belongs to the technical field of precision gear detection. The method realizes high-precision measurement through an error transfer and compensation principle, and comprises the following steps of: firstly, manufacturing a reference conversion device which has the same parameter as a measured gear but is completely consistent with a theoretical phase, and measuring a tiny phase error of the reference conversion device by using a high-precision instrument to serve as a compensation value beta; then, the reference device is placed in a special measuring device, positioning is carried out through a gear tooth groove, the system reading is adjusted to be a beta value through an adjusting scale, and error calibration is completed; and finally, replacing with a duplex planetary gear to be measured, and measuring a reading change value gamma of the scale under the same condition, so that the value is the actual phase center offset of the gear pair, and quantitative evaluation is realized. The matched measuring device comprises a base platform, a central positioning bush, a small / large gear tooth groove positioning piece and a measuring module with a gauge block. According to the invention, a space angle error which is difficult to directly measure is converted into a linear dimension difference which is easy to measure, the industrial problem that the phase consistency of the duplex planetary gear cannot be accurately and quantitatively detected is solved, and the method has the advantages of advanced measurement principle, high precision and simplicity and convenience in operation.

The present disclosure provides a method and device for calibrating a shadowgraph, the shadowgraph comprising an objective table movable in a target plane and a lens movable relative to the objective table along a target direction, the method comprising: controlling the lens to be located at a target position; installing a calibrator on the shadowgraph and placing a calibration piece on the objective table, wherein the calibrator comprises a detection part fixed to the lens, and the calibration piece comprises a plurality of gauge blocks; forming a control scheme of the shadowgraph based on a positional relationship of the plurality of gauge blocks; controlling the objective table and the lens to move so that the detection part contacts each of the plurality of gauge blocks based on the control scheme; recording a moving distance of the lens in the target direction when the detection part contacts each of the plurality of gauge blocks; calculating a calibration error based on the moving distance and the positional relationship; and calibrating the shadowgraph based on the calibration error. According to the present disclosure, a portable method and device for calibrating a shadowgraph can be provided.

The present application belongs to the technical field of profile matching degree detection, and particularly relates to an outer profile gauge for a planet carrier, which comprises a rack and a portal frame arranged on the rack, and further comprises a sliding gauge assembly, a lifting assembly, a coaxial retaining assembly, a horizontal reversing assembly, a reversing adjusting assembly, a lifting guide assembly and a connecting rod assembly. The sliding gauge assembly is arranged on the rack, and the lifting assembly is arranged in the sliding gauge assembly. Through reciprocating lifting of the quick-release coupling, the profile matching degree of the current feature can be detected through transverse sliding of the sliding gauge block when the planet carrier workpiece is at a low position, and the planet carrier workpiece can be adjusted in the horizontal direction through abutment with the contact disc when the planet carrier workpiece is at a high position. In addition, through expansion of the coaxial retaining assembly, the position of the central axis of the planet carrier workpiece can be kept unchanged after the planet carrier workpiece is lifted away from the positioning pin.

The application discloses a kind of city area railway staggered vibration reduction fastener system, belong to rail transit field, including pre-buried sleeve pipe of pre-buried sleeper, elastic strip, gauge block and with pre-buried sleeve pipe matching connection anchor bolt, T bolt and with matching nut, sleeper and rail are sequentially provided with buffer pad, first rigid pad, elastic pad, second rigid pad and track pad along sleeper to rail direction between sleeper and rail.The first rigid pad is provided with one first boss and one second boss on each side of two sides in horizontal direction.The first through hole is opened in the first boss corresponding to the second rigid pad, the recess is opened in the second boss corresponding to the second rigid pad, the stop block is arranged between the second boss and the recess, and the elastic strip seat is further arranged on the second rigid pad.The T-shaped slot is opened in the elastic strip seat corresponding to the T-shaped bolt.The city area railway staggered vibration reduction fastener system can meet the operating characteristics of high speed, small and multiple curve radius of city area railway, and meet the vibration reduction reference demand.

The application discloses a high-precision gauge block automatic measuring device based on double-wavelength phase-shifting interference and belongs to the technical field of gauge block measuring devices, which comprises two groups of heat preservation boxes, a partition chamber fixedly installed between the two groups of heat preservation boxes, CCD cameras fixedly installed at both ends in the partition chamber and facing the heat preservation boxes through second window surfaces, the second window surfaces being arranged at both ends in the partition chamber, converging mirrors fixedly installed in the heat preservation boxes, mounting tables fixedly installed at one end of the outer surfaces of the two groups of heat preservation boxes, frequency-stabilized lasers fixedly installed on the mounting tables and having laser emitting ends aligned with collimating mirrors in the heat preservation boxes through first window surfaces, the first window surfaces being arranged at one end of the heat preservation boxes, and the collimating mirrors being fixedly installed in the heat preservation boxes. Through the design of the angle rotation adjusting mechanism, the high precision of large-size gauge block measurement is realized by the deep integration of optical principle innovation, mechanical structure optimization, automatic control and environmental isolation technology.

The invention discloses an automatic alignment gauge block clamp with displacement, and relates to the technical field of gauge block measurement, the automatic alignment gauge block clamp comprises a handle and a rotating groove, the rotating groove is formed in the surface of one side of the handle, a bearing is fixedly installed on the inner wall of the handle, a control rod is rotatably installed on the inner wall of the bearing, a threaded groove is formed in the surface of the outer side of the control rod, and the threaded groove is fixedly connected with the handle. A first setting plate is fixedly mounted on the surface of the top end of the handle, a second setting plate is fixedly mounted on the surface of one side of the first setting plate, and an adjusting wheel is fixedly mounted at the tail end of the control rod. According to the invention, the test object is clamped by the measuring clamping jaw, and the measuring block clamped by the clamping block is used for measuring the test object, so that the measuring clamping jaw also has high precision according to the size of the measuring block, the automatic alignment function is realized through the measuring clamping jaw, and the test object is indirectly detected; and precision reduction caused by abrasion due to frequent contact between the gauge block and a tested object during measurement is prevented.

The present invention discloses a device for detecting the depth of a cross-arc surface, comprising a dial indicator, a positioning base, a gauge body, a slider and a gauge block, a top surface of the positioning base is provided with a clearance notch on the left side, a gauge body is provided on the top of the positioning base, a rectangular opening is provided on the left side of the bottom surface of the gauge body, a travel slot is provided on the top surface of the rectangular opening, a slider is provided in the rectangular opening on the left side of the bottom surface of the gauge body, a contact block is provided on the top surface of the slider, the contact block extends upward from the travel slot, a gauge block is provided on the bottom surface of the slider, a measuring end is provided at the bottom of the gauge block, a guiding structure for guiding the slider to move left and right is provided on the slider, a clamping seat is provided on the top surface of the gauge body, a through hole is provided on the right end surface of the clamping seat, and a dial indicator is provided in the through hole on the right end surface of the clamping seat. When detecting the depth of the cross-arc surface, the present invention is easy to use, the acquired parameters are accurate, and meet the corresponding process requirements; it is very convenient in obtaining reference points and measuring the cross-arc surface, and improves work efficiency.

The utility model discloses a micrometer screw rod and measuring anvil bonding assistive device, which comprises a V-shaped block and a flat gauge block, the level of the V-shaped block is at least zero, the flatness of the flat gauge block is at least 0.2 u, the flat gauge block is arranged at one end of the V-shaped block, and the perpendicularity of the flat gauge block and the V-shaped block is at least 2u through adjustment. The auxiliary tool composed of the flat gauge block and the V-shaped block is adopted, and the alloy measuring head and the lead screw are bonded into a whole on the auxiliary tool in a bonding mode, so that the flatness of the measuring end face of the lead screw and the perpendicularity of the center of the lead screw meet the precision requirement.

The invention discloses a full-automatic grating type length measuring instrument for detecting the inner diameter and the outer diameter of a high-precision thin-wall part and a measuring method thereof, and belongs to the technical field of precision measuring instruments. The full-automatic grating type length measuring instrument comprises a measuring head and a measuring arm, and the output end of the measuring arm is connected with the measuring head through a rotating disc; the output end of the measuring arm is also provided with a driving mechanism for driving the measuring head to rotate; one end of a short arm side is connected with the internal measuring body, and one end of a long arm side is connected with the external measuring body; the long arm side middle of the main body is connected with a measuring arm; and the internal measuring body extends into the workpiece to be measured. The internal measuring unit is matched with the external measuring body to measure the inner diameter and the wall thickness of the measured workpiece, so that the inner diameter and the outer diameter of the measured workpiece are obtained; the device can be applied to detection and calibration of inner and outer diameters of high gauge blocks, gauges, ultrahigh-precision workpieces and high-precision thin-wall parts, perfects tool clamps corresponding to detected measuring tools and gauges, and has the advantages of being accurate in measured data, high in automation degree and wide in application range.

The utility model relates to the technical field of gear inspection, in particular to a gear inspection device, which comprises a base and is characterized by further comprising a first supporting plate, a second supporting plate, a clamping assembly, a third supporting plate, an inspection plate, a support, a gauge block and a limiting assembly, and the first supporting plate, the second supporting plate and the third supporting plate are all arranged at the top of the base; the inspection plate is arranged at the top of the first supporting plate, and one side of the inspection plate is provided with a tooth groove which is used for being matched with convex teeth of the gear; the clamping assembly is arranged at the top of the third supporting plate and used for fixing the gear. The support is arranged above the base, the block gauge is connected to the support in a sliding mode, a square block is arranged at the bottom of the block gauge and used for being matched with a square groove in the top of a gear, and the limiting assembly is used for limiting the block gauge. According to the device, whether the position degrees of the convex teeth and the square grooves and the position degrees of the strip-shaped grooves meet the requirements or not can be rapidly detected at the same time, the detection accuracy is guaranteed, and the detection efficiency is improved at the same time.