437 results about "Micrometer" patented technology

The present application belongs to the technical field of aircraft assembly, and provides a device and method for controlling the depth of a counterbore of an engine suspension fastener hole. The device is used in the process of drilling an engine suspension fastener hole and counterbore, and controls the depth of the counterbore. The device is composed of a micrometer, a sensor and a tool holder. The micrometer is fixed on the tool holder, and the end of the micrometer is a flat surface. The working end of the sensor is a half-spherical surface, which can be compressed. The tool holder moves with the deepening of the counterbore depth, so that the end surface of the micrometer and the sensor are in contact and the sensor is compressed. When the compression reaches a certain depth, the sensor triggers, the device stops the counterbore, the tool exits the product, and the assembly part is automatically counterbored to the required size. The present application can automatically control the depth of the counterbore of the assembly part and the part.

The invention relates to the technical field of bearing outer ring run-out degree detection, and discloses bearing outer surface flatness detection equipment and a detection method. The bearing outer surface flatness detection equipment comprises a rotary table, a jig, a dial indicator, a lifting rod, a driving wheel, a driving disc, a push-pull rod, a transmission wheel and a lifting sleeve, the rotary table can rotate, the jig is fixed to the upper end of the rotary table, the lifting rod can move up and down, the dial indicator is fixedly installed at the upper end of the lifting rod, and a plug pin is fixedly installed at the lower end of the lifting rod. The driving wheel is vertically arranged and comprises an incomplete gear; the incomplete gear is intermittently meshed with a gear I fixed at the lower end of the rotary table; the upper surface of the lifting sleeve is arranged to be a plurality of planes with the heights sequentially reduced, and every two adjacent planes are connected through an inclined face. The bolt can contact each plane; a contact of the dial indicator can contact different positions of the bearing outer ring in the height direction, and circumferential runout detection of different positions of the outer circumferential surface of the bearing outer ring is achieved.

The invention discloses a surface roughness and size precision common prediction method based on a relative position matrix, and mainly relates to the field of roughness detection. Comprising the steps that in the turning machining process, vibration signals are collected in real time through multi-channel acceleration sensors arranged at the positions of a main shaft, a tool and a workpiece clamp, and a roughness measuring instrument and a micrometer are synchronously used for measuring the surface roughness value and size data of a machined workpiece; normalization processing is carried out on the collected vibration signals, the vibration signals are converted into two-dimensional images to be expressed based on a relative position matrix algorithm, deep features are extracted through two-dimensional discrete wavelet transform, and the spatial expression ability of the signals is enhanced. The method has the beneficial effects that the vibration signal is converted into the two-dimensional RPM graph through the RPM, and the 2D-DWT is utilized to perform decomposition reconstruction and image fusion, so that the deep sharing features in the vibration signal are effectively extracted, and the method plays a key role in improving the prediction precision of the surface roughness and the size precision.

The invention designs a two-dimensional ring plug gauge thread measuring machine based on a rotary encoder and a thread measuring method, and belongs to the field of precision measurement. The device is composed of a base, an X-axis displacement structure, a Z-axis displacement structure, a ring plug gauge clamp device and a micrometer structure, a rotary encoder is fixed to the rotation center of a probe lever structure, and displacement is fed back in real time in combination with an X / Z-axis grating ruler. The computer integrally controls the motor rotor, the X / Y / Z axis movement and the rotary encoder through the single-chip microcomputer to construct a closed-loop system. The innovation lies in that the lever structure is optimized, appropriate measuring force is provided for different types of ring plug gauge threads, a Y-axis displacement structure is introduced, rapid positioning of a thread inflection point is achieved, accurate measurement of a rotary encoder is achieved, and the accuracy is further improved by error compensation of a computer host. According to the method, the thread to be measured cannot be damaged, manual crutch searching is not needed, measurement of the contact type rotary encoder is more accurate, the accuracy is further improved through error compensation, and an efficient solution is provided for automatic measurement of the thread of the ring plug gauge.

The invention discloses a device for wafer automatic edge searching positioning and thickness measurement, which comprises a mounting rack, a horizontal moving assembly, a vertical moving assembly, a driving motor, a wafer suction cup, a laser micrometer and a thickness measurement mechanism, and is characterized in that the horizontal moving assembly is arranged on the mounting rack, and the vertical moving assembly is arranged on a moving mechanism of the horizontal moving assembly; the driving motor is installed on a moving mechanism of the vertical moving assembly. The wafer suction cup is arranged on the top of the rotating shaft. The two sides of the wafer suction cup are respectively provided with a wafer placing strip, and the laser micrometer and the thickness measuring mechanism are both installed on the installation frame. The wafer edge searching and positioning device has the technical effects that wafers of various sizes can be compatible, automatic edge searching and positioning of the wafers can be realized, and the centers of the wafers and the positions of the cut edges or the grooves of the wafers can be quickly determined; meanwhile, the laser micrometer and the wafer suction cup are matched for use, so that the positioning precision is greatly improved; by arranging the thickness measuring mechanism, one device can measure the thickness of the wafer at the same time, and space and cost can be saved.

The invention discloses a comprehensive performance test system and method for a wind power coupling transmission system, and is applied to the performance test technology, the system comprises a weighting base, a first sliding groove is formed in the weighting base, and an input shaft centering assembly and an output shaft centering assembly which have the same structure and are symmetrically distributed are slidably connected in the first sliding groove; the input shaft centering assembly and / or the output shaft centering assembly comprise / comprises a sliding base, a first lifting table and a second lifting table, wherein the first lifting table and the second lifting table are sequentially arranged on the sliding base. A bearing seat, a shaft centering adjusting bracket and a coupling support are linearly and sequentially arranged on the second lifting platform; the shaft centering adjusting support is composed of a supporting seat and an annular adjusting frame fixed to the upper end of the supporting seat, and a plurality of telescopic assemblies and CCD laser micrometer devices are annularly arranged in the annular adjusting frame. According to the invention, the installation precision of the test system can be effectively improved, multiple performance tests can be carried out according to test requirements, and the test result is more accurate.

The invention discloses an ultrasonic abrasive flow surface texture machining device and method based on an auxiliary magnetic field, and belongs to the field of precision machining and surface engineering. The ultrasonic abrasive flow surface texture machining device comprises a workbench, an ultrasonic vibration generating device, a magnetic field generating device, an abrasive flow machining system and a three-dimensional motion platform. The composite abrasive particle suspension is composed of a basic solution, carbonyl iron powder magnetic particles and silicon carbide abrasive particles. According to the method, magnetic particles are guided by a magnetic field to form a chain along magnetic lines of force, ultrasonic high-frequency impact is combined, abrasive materials are driven to impact the surface of a workpiece in order, a submicron texture with the consistent direction and the uniform size is formed, the depth ranges from 0.2 micrometer to 2 micrometers, and the width ranges from 1 micrometer to 20 micrometers. Texture parameters are flexibly regulated and controlled through magnetic field and ultrasonic parameters, and the method has the advantages of being high in machining precision, high in controllability, low in cost, environmentally friendly and recyclable, is suitable for precise parts of bearings and cutters, and can remarkably improve the tribological performance and wettability of the parts.

A boring head arranged for holding a boring tool for metal cutting includes a main body having a support surface and a scale surface. The boring head further includes a piston including a boring tool interface for fixedly carrying the boring tool. The piston is movably arranged in the main body along the positioning axis (y), and a micrometer screw. The micrometer screw is arranged in the main body and coupled to the piston, such that, when the micrometer screw is rotated, the piston is moved along the positioning axis to one of the protracted positions or the retracted position. The micrometer screw has a head abutting against the support surface. The head includes a radially outer head surface provided with first graduation marks. The scale surface is provided with second graduation marks aligned with the first graduation marks to provide a reading of the axial position of the piston.

The invention discloses a processing method of an inner ring of a short cylindrical roller bearing with a flange-free outer ring, relates to a processing method of a bearing inner ring, and aims to solve the problem that the stability, the consistency and the bearing surface quality of the conventional processing method of the short cylindrical roller bearing with the flange-free outer ring cannot meet the requirements of a user on the bearing quality. The method comprises the following steps: carrying out rough turning and fine turning on a bearing inner ring in sequence, and then turning a raceway, an inner chamfer and an outer chamfer, turning an oil groove and drilling two rows of oil holes; heat treatment is conducted, then coarse grinding is conducted firstly, then fine grinding is conducted, tempering is supplemented at high temperature, then oil grooves and oil holes are cleaned, an inner raceway is subjected to final grinding, acid pickling is conducted, hydrogen removal is conducted, and the outer diameter of the inner ring and the inner diameter are subjected to final grinding; and respectively carrying out abrasive flow machining on the outer surface and the inner surface of the bearing inner ring, then carrying out flaw detection, finely grinding an inner raceway, and submitting inspection. By the adoption of the machining method, the precision scatter difference of the obtained bearing inner ring is controlled within 0.5 micrometer, the consistency and stability of the machining method are good, and the machining method is applied to the field of bearings.

The invention provides an aero-engine main bearing axial displacement measuring device and method, and belongs to the technical field of aero-engines, the aero-engine main bearing axial displacement measuring device comprises a bottom plate, a supporting seat, a dial indicator measuring tool, a bearing initial displacement measuring assembly and an axial loading displacement measuring assembly, the supporting seat comprises a first part and a second part, the first part is vertically connected with the bottom plate, and the second part is vertically connected with the dial indicator measuring tool; the main bearing is sleeved on the second part, the periphery of the second part is provided with a guide surface matched with the inner ring of the main bearing, the joint of the first part and the second part is provided with a step surface, the step surface forms a limiting end surface of the inner ring end surface of the main bearing with a dismounting groove, and the dial indicator measuring head abuts against the outer ring of the main bearing; when the free-state displacement activity amount is measured, the bearing initial displacement measurement assembly is fixed on the main bearing and the supporting seat; when the axial loading displacement is measured, the axial loading displacement measuring assembly is fixed on the supporting seat, and axial force is applied to the outer ring of the main bearing. According to the invention, effectiveness and high precision of bearing displacement measurement are realized and improved.

This invention discloses a novel cup rim measuring instrument, belonging to the field of measuring instrument technology. It aims to solve problems encountered when using conventional calipers to measure the rim of paper cups, such as significant influence from sample molding, substantial human error, insufficient accuracy, and the inability to avoid seam errors. The measuring instrument includes a base, a measuring cup pan, a dial, a steel bar, a calibration block, a turntable, a digital micrometer, an adjusting block, a locking structure, and an elastic reset component. High-precision measurement is achieved by using a flexible steel bar to conform to the cup rim contour, combined with the digital micrometer. A tension spring provides uniform preload, and the locking structure fixes the length of the steel bar. The mating structure between the adjusting block and the measuring head ensures accurate data. This measuring instrument offers precise and stable measurements, is easy to operate, and is suitable for various types of paper cups, especially for paper cup production quality inspection scenarios with high requirements for measurement accuracy and consistency.

The invention relates to a numerical control machine tool shank end face clamping force measuring mechanism. Comprising a measuring head and a micro-distance adjusting mechanism, the micro-distance adjusting mechanism comprises a spiral propelling mechanism, a switching disc frame and a locking mechanism, a piezoelectric ceramic sensor is arranged in an annular groove in the end face of the cutter handle end of the measuring head, and high-precision displacement adjustment is achieved by adopting the spiral propelling mechanism similar to the micrometer principle. The front end of a screw rod is in axial stop fit and circumferential rotation fit with a disc of a switching disc frame so as to drive the switching disc frame to axially move by a set distance, a transverse connecting rod and a vertical connecting rod of the switching disc frame sequentially transmit displacement to a piezoelectric ceramic sensor, the piezoelectric ceramic sensor is driven to axially move, and then the magnitude of interference between a main shaft and the conical surface of a cutter handle is changed. The online interference magnitude adjusting device has the advantages of being convenient and fast to operate and high in precision.

The utility model belongs to the technical field of fixtures, and particularly relates to a fixture for detecting jumping of a motor shaft, which comprises a base, a micrometer is mounted on the base, a radial clamping mechanism is arranged at the upper end of the base, a threaded shaft is mounted in the base through a bearing, and a moving block is connected to the middle section of a shaft body of the threaded shaft through threads. The top of the moving block is fixedly connected with a baffle, and the baffle is fixedly connected with an end push block. According to the utility model, the radial clamping mechanism is arranged on the base, the cushion blocks on the two L-shaped plates can support the motor shaft, and the lifting of the pressing block can be controlled through the screw thread movement between the adjusting rod and the adjusting rod, so that the motor shaft is clamped in a combined manner by combining the cushion blocks, and a good fixing effect is achieved during the jumping detection of the motor shaft; and the device is suitable for motor shafts with different diameters, and the applicability is good.

The invention relates to the technical field of machining and measurement, in particular to a balance shaft plane measuring tool which comprises a base, a positioning mechanism and a measuring mechanism. The measuring mechanism comprises a sliding block arranged on the front face of the base in a sliding mode and two symmetrical mounting rods fixedly arranged on the upper surface of the sliding block, dial indicators are rotationally arranged at the top ends of the two mounting rods through adjusting bolts, and probes are arranged at the measuring ends of the dial indicators. Through the arrangement of the positioning mechanism and the measuring mechanism, the balance shaft main body can be abutted and fixed, then the slide block is moved to enable a probe on the dial indicator to reach a specified detection position on the surface of the balance shaft main body, the dial indicator is subjected to zero comparison, finally, the slide block is moved to drive the dial indicator and the probe to move, and the reading change of the dial indicator is observed. Whether the balance shaft main body is qualified or not can be quickly judged by judging whether the reading change of the dial indicator is within a specified range or not, so that the tool has the advantages of low manufacturing cost and high measurement efficiency.

A reed type micro switch fine adjustment device is used in the micro switch assembly field, the switch reed fine adjustment device comprises a micrometer head, a support, a shaft coupling, an adjusting device, a base plate, a support, a bearing assembly and the like, the bearing is assembled on the support, an adjusting tool and the support are fixed on the base plate through screws, the support is installed on the other end face of the base plate through screws, and the shaft coupling is installed on the base plate. The whole device is supported. One end of the coupler clamps a shaft rod on the micrometer head, the other end of the coupler clamps an adjusting screw of the microswitch adjusting device, and a screw rod on the micrometer head is rotated to drive the adjusting screw on the adjusting device to move at the same time. The display screen is arranged on the micrometer head, the displacement can be directly displayed, and the moving distance of the adjusting screw on the microswitch adjusting device can be accurately controlled, so that the deformation of the reed can be accurately controlled, and the requirement of parameter index consistency of the microswitch can be met. The utility model provides a fine adjustment device for a reed type microswitch, which solves the problems of low efficiency, high labor intensity, poor manual assembly quality straightness and the like, and is high in adjustment precision and convenient to use and maintain. Meanwhile, a servo motor and a controller can be connected to the micrometer head, so that the function of automatically and accurately adjusting the deformation of the switch reed is realized.

The utility model discloses a micrometer gauge calibrating device which comprises a ruler frame, a measuring anvil is fixedly connected to one side of the top of the inner ring wall of the ruler frame, a micrometer screw is fixedly connected to the other side of the top of the inner ring wall of the ruler frame, a square groove is formed in an inner cavity of the ruler frame, and a lifting structure is arranged at the square groove of the ruler frame. And the bottom of the lifting structure is in threaded connection with the center of the ruler frame. When the micrometric gauge is calibrated, the lifting structure is arranged, observation can be better carried out, a detected object does not need to be held by hand, the lifting structure is stably fixed between the measuring anvil and the micrometric screw through magnetic lifting, correct calibration can be carried out, the precision of the lifting structure can be ensured, and errors caused by influence on a measurement result are prevented.

The invention discloses a dispensing machine and a dispensing method, and belongs to the technical field of dispensing. According to the scheme, in the initial calibration stage of the dispensing machine, the position of the dispensing machine is accurately adjusted through the micrometer of the left-right adjusting assembly and the micrometer of the up-down adjusting assembly, and the dispensing machine is moved to the dispensing preparation position; a mode of fixing a dispensing head and rotating a product is adopted, a rotation angle is set in a control system before dispensing, a controller automatically controls movement of a dispensing assembly and rotation of the product, and multiple circumferential dispensing is carried out on the product at a time through a plurality of glue outlet holes formed in the dispensing head; and after the product rotates to the preset rotation angle, the controller judges that dispensing is finished, the dispensing assembly is controlled to return towards the center of the product, and glue is prevented from forming drawn wires when the dispensing head moves upwards. According to the scheme, full-automatic one-time multi-circle dispensing can be achieved, the dispensing position is precisely controlled through the micrometer and the controller, automatic dispensing is achieved, the positioning precision is high, the glue amount is uniform, no wiredrawing exists at the sealing position, and the dispensing efficiency is high.

The application relates to the field of H-steel welding equipment, in particular to H-steel horizontal automatic welding equipment with a correcting mechanism, which comprises an upper-layer H-plate correcting mechanism, a middle-layer H-plate correcting mechanism and a lower-layer H-plate correcting mechanism, the upper-layer H-plate correcting mechanism is arranged at the top end of the equipment, the middle-layer H-plate correcting mechanism is arranged at the lower end of the upper-layer H-plate correcting mechanism, the lower-layer H-plate correcting mechanism is arranged at the lower end of the middle-layer H-plate correcting mechanism, and the lower end of the lower-layer H-plate correcting mechanism is provided with a bottom plate adjusting mechanism. The electronic micrometer and the correcting mechanism can clamp and convey wing plates with different specifications and thicknesses and adjust the error of the wing plates in the horizontal direction, the electric correcting roller mechanism can correct the vertical amplitude of the web plate, the wing plate and the web plate are adjusted by the machine, the uncertainty of manual adjustment is reduced, and the bottom plate adjusting mechanism can process wing plates with different specifications and widths without replacing the production line.

The embodiment of the utility model provides a radial runout detection device, and relates to the technical field of tolerance detection. The radial runout detection device comprises a rack, a placing table, a rotary flange and a plurality of detection heads, the placing table is arranged on the rack and used for placing a workpiece, the rotary flange is pressed on the workpiece and used for driving the workpiece to rotate, the multiple detection heads are arranged in the circumferential direction of the workpiece and located on the lower portion of the rotary flange, and the multiple detection heads are arranged on the rack. As the detection head is arranged close to the workpiece, compared with the direct use of a dial indicator for detection, the detection head can detect the radial runout value of the workpiece more accurately, and the detection precision is higher.

The utility model relates to the technical field of thickness detection equipment, in particular to waterproof roll thickness detection equipment, which comprises a working table, mounting racks arranged on two sides of the top end of the working table and detection assemblies arranged in the mounting racks, the detection assemblies comprise micrometer gauges, slide rods and slide plates, bottom end contact rods of the micrometer gauges penetrate through the mounting racks, and the slide plates penetrate through the mounting racks. The sliding rod is fixed to the bottom end of the mounting frame, the outer side of the sliding rod is sleeved with a sliding plate, the bottom end of the contact rod makes contact with the top end of the sliding plate, the outer side of the contact rod is sleeved with a spring, and the bottom end of the spring makes contact with the top end of the sliding plate. And the roll shaft rolls between the sliding plates on the two sides, when the roll shaft moves up and down, the springs can achieve the buffering effect, the sliding rods on the two sides can slide through the groove body structures on the two sides of the sliding plates, and the problems of shaking and deviation are reduced.

The present invention belongs to the technical field of aviation speed reducer rotor shaft equipment, and specifically relates to a method for measuring the clearance of a speed reducer rotor shaft tapered bearing and a method for manufacturing the same. One method for measuring the clearance of a speed reducer rotor shaft tapered bearing includes a stop mechanism and an axial loading mechanism; the axial loading mechanism is used to apply an axial force to the rotor shaft of the speed reducer rotor shaft assembly from bottom to top, and the stop mechanism is arranged above the axial loading mechanism, and is used to guide the rotor shaft of the speed reducer rotor shaft assembly; the measuring method includes the following steps: the speed reducer rotor shaft assembly is arranged on the axial loading mechanism, and a micrometer is arranged on the speed reducer rotor shaft assembly; the axial loading mechanism applies an axial force F to the speed reducer rotor shaft; and the clearance value measured by the micrometer is obtained. The present invention applies an axial load to the rotor shaft by pushing from bottom to top, which effectively avoids unbalanced load and improves the accuracy of the tapered bearing clearance measurement.

The utility model discloses a positioning carrier applied to a high-precision micrometer. The positioning carrier comprises a clamping jig, a positioning bracket and a measuring head, the clamping jig can abut against the interior of a product and clamp the product, the positioning support can be clamped on the clamping jig, and the measuring head can be clamped on the positioning support; the measuring head comprises a first contact and a second contact, one end of the first contact can be in contact with a measuring anvil of the micrometer, the other end of the first contact can be in contact with the outer side of a product, one end of the second contact can be in contact with a micrometric screw of the micrometer, and the other end of the second contact can be in contact with the outer side of the product. The first contact can be matched with the second contact to abut against the outer side of the product.

This invention discloses a flatness adjustment device for a molding press and the molding press thereof, belonging to the field of molding presses. The device includes a connecting plate, on which a hot press plate is mounted via connectors. Forcing members are located at the four corners of the top surface of the hot press plate. Four driving members are located on the side of the connecting plate facing the hot press plate, each driving member acting on one of the forcing members. When the transmission assembly rotates the turning part, the rotation of the turning part, through the driving part, forces the corresponding forcing members to move the corresponding corner of the hot press plate by a displacement at the micrometer level, thereby achieving precise adjustment of the corners of the hot press plate. Compared to the existing technology that directly adjusts by striking a conical rod with a hammer, this method is more convenient and ensures a higher degree of precision, allowing operators to adjust the flatness of the hot press plate more quickly.

The utility model discloses a digital display internal gear micrometer, which comprises a knurling cylinder, a fixed shell, measuring jaws, a micrometric screw, a transmission sleeve, a shaft sleeve, a guide sleeve, a grating, a digital display assembly and a micrometer frame, the measuring jaws comprise a fixed measuring jaw and a movable measuring jaw, and the fixed measuring jaw and the movable measuring jaw are correspondingly arranged. Symmetrical detachable measuring heads are arranged on the fixed measuring jaw and the movable measuring jaw, and the measuring heads on the fixed measuring jaw and the movable measuring jaw face opposite directions; the measuring head comprises a measuring head and a threaded connecting rod, the fixed measuring jaw and the movable measuring jaw are respectively provided with threaded holes corresponding to the threaded connecting rod, and the measuring head is in threaded connection with the fixed measuring jaw or the movable measuring jaw. The measuring head is replaced for measurement according to the internal gears of different sizes, the sizes of the internal gears of different modulus can be measured more accurately, and the use is convenient and flexible.

The utility model relates to the technical field of clamping tools, and discloses a clamping tool for an outside micrometer, which comprises a base, the middle position of the top of the base is connected with a support column, and the upper side of the front part of the support column is screwed with a limiting bolt; the clamping groove is formed in the middle of the top end of the supporting column, and the rear end of the limiting bolt penetrates through the corresponding position of an inner cavity of the clamping groove. According to the clamping tool for the outer diameter micrometer, the micrometer can be clamped through the formed clamping groove, then the clamping arm of the micrometer is clamped by rotating the limiting bolt, due to auxiliary clamping of the limiting bolt, the clamping groove can clamp the micrometers with different thicknesses, the clamping stability of the micrometer is improved, and the clamping efficiency of the micrometer is improved. And tiny vibration caused by hand operation is reduced, so that the measurement accuracy is improved.

The invention discloses a gear machining detection method, and belongs to the technical field of gear machining detection. The machining comprises machining of tooth crest chamfers, polishing of gear tooth surfaces and machining of tooth profile chamfers; the detection comprises the following steps of: detecting the sizes of each shaft and each tooth by using a micrometer, and performing three-coordinate detection on the verticality and the planeness of the end surface of the tooth part. After the technical scheme is adopted, the gear machining and detecting efficiency is improved, and the machining precision and quality are guaranteed.

The utility model relates to the technical field of bearing production, in particular to a large-cone-angle tapered roller bearing small flange outer diameter detection device which comprises a base, a workbench arranged on the base and a detection mechanism arranged on the base and the workbench. The detection mechanism comprises a supporting cylinder arranged on the base, an instrument sleeve vertically arranged on the supporting cylinder in a sliding mode, a dial indicator detachably arranged on the instrument sleeve, and a first supporting column and a second supporting column which are arranged on the workbench in a sliding mode. Supporting gaskets are detachably arranged on the first supporting column and the second supporting column; the included angle between the first chute and the second chute is 45 degrees, so that the distance between the supporting columns can be adjusted, and large-cone-angle bearing inner rings with different diameters can be measured; the large end face of the large cone angle bearing inner ring contacts with the workbench for measurement, so that the center of gravity of the ferrule is closer to the workbench, and contact is more stable. The working table is obliquely arranged, so that the sight of measuring personnel is better, the measuring instrument is more convenient to adjust, the applicability is higher, and the working efficiency and the product quality are improved.

The utility model relates to the technical field of measuring gauges, and provides a cross-rod distance measuring device. The measuring rods are installed on the supporting piece, the two measuring rods are coaxially arranged along a first straight line, the measuring rods can slide relative to the supporting piece so as to be close to or far away from each other, the opposite ends of the two measuring rods are used for abutting against the inner wall of the gear ring, the adjacent ends of the two measuring rods are connected through the micrometer, and the micrometer is used for obtaining the distance between the two measuring rods; the number of the first guide rods is at least two, the first guide rods are installed on the supporting piece, the first sliding blocks and the first guide rods are arranged in a one-to-one correspondence mode, the first sliding blocks can slide or be locked along the first guide rods, and the first sliding blocks are used for being supported on the axial end face of the gear ring so that the first straight line can coincide with one diameter of the gear ring; and the measuring bar can move or be locked along the axial direction of the gear ring. Therefore, the cross-rod distance measuring device can be suitable for different types of gear rings with different axial sizes.

The invention provides a regression model establishing and predicting method for cold-rolled low-carbon steel surface roughness, relates to the technical field of cold rolling, and aims to solve the technical problem that in the prior art, the surface roughness of cold-rolled low-carbon steel strip steel cannot meet individual requirements of customers through advanced design. The method comprises the following steps: selecting low-carbon steel with specific chemical components of 0.01-0.065% of C, less than or equal to 0.03% of Si and a coiling temperature of 630-730 DEG C, measuring the roughness of five points on the surface of the cold hard coil, and calculating an average value of Ra; the concentration of the continuous annealing leveling liquid is controlled to be larger than 2.5%, the roughness of a working roller is controlled to be 2.3-2.8 micrometers, the elongation is selected, the rolling force and the kilometers of the roller are counted, and the roughness of a finished product is measured; the roughness of the raw material, the rolling force of the temper mill, the elongation of the temper mill and the kilometers of the rollers are used as independent variables, the roughness of the finished product is used as a dependent variable, and a mathematical expression is obtained by fitting a regression model through Minitab; and finally, according to customer demands, substituting preset parameters for prediction and optimization. The surface roughness is preset in advance, the unqualified risk is reduced, the test period is shortened, and the method is suitable for industrial mass production.

The utility model provides a quick inspection device of groove, it belongs to the field of groove inspection, it includes: the inspection platform, is fixedly arranged the chute on the inspection platform, the chute is slidably arranged the sliding block in, fixedly set up the support plate on the sliding block, be provided with fixed subassembly on the support plate, fixed subassembly is used for fixed steel plate material, inspection subassembly, inspection subassembly includes electric slide rail, air cylinder, mounting bracket and a plurality of micrometer, the utility model discloses can fast to steel plate material carry out the resistance fixed, and can carry out the inspection of multiple groove simultaneously, also can adapt to different groove spacing, different thickness and different size steel plate material, has improved work efficiency and adaptability significantly.