37results about How to "Avoid mechanical errors" patented technology

The invention discloses a horizontal arm type three-coordinate measuring and ruling machine, which includes a base, an upright column and a horizontal arm, wherein the upright column and the horizontal arm are made of lighter material, namely aluminum; all three shafts adopt two sets of linear slides; and the linear slide of the horizontal arm is mounted by adopting two mutually vertical surfaces, and an adjustable pull rod is mounted in the horizontal arm for adjusting the curve and deformation caused by other causes as self weight. The horizontal arm type three-coordinate measuring and ruling machine solves the problems in the market that the existing three-coordinate ruling machine has unstable mechanism, complex structure and high cost, and is complex to machine the parts and inflexible to operate. The shafts are mutually vertical and matched with the precise linear slides to realize the three-dimensional movement, so as to achieve the measuring and ruling functions in the three-dimensional space; and the three-coordinate measuring and ruling machine can support all sorts of triggering, analog scanning and non-contact optical measuring heads, and can be widely applied to the measuring and ruling of large mechanical parts as automobiles, motorcycles, excavators, ship engines and dies.

The invention relates to a method for measuring an object through multiple cameras and a device thereof. The method comprises the steps that images of different areas of a calibration board photographed by multiple cameras respectively are received; the mapping relation between the pixel coordinate system of each camera and a calibration coordinate system is acquired according to the images of different areas of the calibration board; the images of different areas of an object photographed by the multiple cameras respectively are received, and the pixel coordinates of the images of different areas of the object are acquired; the pixel coordinates of the images of different areas of the object are mapped to the calibration coordinate system according to the mapping relation; and the measurement result of the object is obtained according to the coordinates of the images of different areas of the object in the calibration coordinate system. Therefore, the object or the cameras does/do not need to be rotated or moved so that mechanical error caused by rotation or movement of the cameras can be avoided, and accuracy of the object measurement result can be enhanced.

A calibrating template for the conic-beam X-ray CT system is prepared through inlaying 4 point-shaped metallic balls in the 4 apex points of a quadrate on an organic glass or drilling 4 orifices at said 4 apex points on a metallic plate. The projection data of said calibrating template is acquired under a projecting angle and then used in conjuction with the central coordinates of the projected light spot and the side length of said quadrate to correctly calculate 6 offset parameters of said CT system of calibrating its imaging unit.

The invention discloses a full-automatic condensation point measuring device, and belongs to the technical field of oil physical property measurement. The measuring device adopts two measuring modes to measure oil condensation points and comprises a condensation point test tube, a temperature sensor, a camera probe, a stress piece, a motor, a position sensor, an angle sensor, a heating-refrigeration circulator, a PC machine, a PLC controller, a modulation processor and an injection pump, the heating-refrigeration circulator, a liquid tank and a liquid storage pot are connected and form a circular loop, and the stress piece is inlaid in the inner wall of the condensation point test tube; the camera probe monitors and judges solidification degree of a sample, is placed to the condensation point tube, and rotates to the 45-degree oil sample scale line position, when the motor drives the condensation point test tube to rotate, the camera probe and the stress piece synchronously measure oil, the efficiency is high, the reliability is high, human resources are greatly reduced in a technical aspect, and the measuring device belongs to a high-performance intelligent automatic device.

The invention provides a water-oil isolation type soaking three-axis testing tank and a testing method, relates to the technical field of testing equipment and aims to solve the technical problem thatvariable confining pressure testing is hard to implement under a long-term soaking condition of a test part. The testing tank comprises a soaking pressure cabin, a hydraulic oil cabin, a heater, a pressure sensor, a temperature sensor, a transfusion channel, a refrigeration device, an oil pressure control device and a transfusion adjusting device, wherein the soaking pressure cabin is arranged inside the hydraulic oil cabin; a flexible film is arranged between the soaking pressure cabin and the hydraulic oil cabin; the transfusion channel is communicated with the soaking pressure cabin and the transfusion adjusting device. By adopting the device, operation such as confining pressure loading and confining pressure release is directly implemented on a test part in the soaking pressure cabin, and deformation situations of rock explored at different water full states of a mining well can be simulated. The testing tank structure provided by the invention has the advantages of being simplein structure, convenient to operate, and the like, and the testing method with the testing tank has the advantages of being small in experiment error, wide in simulation range, and the like.

The embodiment of the invention provides a single-axis magnetic field sensor, a double-axis magnetic field sensor and a preparation method thereof. The single-axis magnetic field sensor comprises a first full-bridge circuit arranged on a substrate. The first full-bridge circuit comprises two first magnetic resistance modules and two second magnetic resistance modules. The two first magnetic resistance modules are located on a pair of opposite bridge arms of the first full-bridge circuit respectively. The two second magnetic resistance modules are located on the other pair of opposite bridge arms of the first full-bridge circuit respectively. The magnetization directions of the reference layers of the first magnetic resistance modules are perpendicular to the magnetization directions of thefree layers of the first magnetic resistance modules. The magnetization directions of the reference layers of the first magnetic resistance modules are the same. The magnetization directions of the reference layers of the second magnetic resistance modules are perpendicular to the magnetization directions of the free layers of the second magnetic resistance modules. The magnetization directions of the reference layers of the second magnetic resistance modules are the same. The included angle between the magnetization directions of the reference layers of the first magnetic resistance modulesand the magnetization directions of the reference layers of the second magnetic resistance modules is A and A is larger than 0 degree and smaller than 180 degrees. The technical scheme provided by theinvention has the advantages of simple process, low manufacturing cost and the like. The product yield can be improved, and the large-scale production requirement can be met.

The invention discloses a microscope focusing device based on ultrasonic motor drive. An ultrasonic motor, bevel gears and bevel racks cooperate with one another to electrically control a support plate to move up and down, and the structure is very simple. During usage, the support plate can be controlled to move on any scale under the drive of the ultrasonic motor, so that the clearest focal length can be found out easily. The ultrasonic motor has no inertia during reciprocating, meanwhile, one adjusting mechanism is arranged between one bevel gear and the ultrasonic motor, one adjusting mechanism is arranged between the other bevel gear and an encoder, the bevel gears and the bevel racks can be always meshed closely by the aid of the adjusting mechanisms, and mechanical errors of a traditional structure are avoided when the support plate is controlled to move up and down. The ultrasonic motor, the bevel gears and the bevel racks cooperate with one another, the kinematic accuracy of the support plate is up to plus/minus 2 mu m through experiments, and the focusing accuracy of the focusing device is much higher than that of a traditional focusing structure.

The invention discloses a multifunctional test bench for a chip. The multifunctional test bench comprises a test bench and an extrusion plate, wherein a groove is formed in the middle of the upper surface of the top of the test bench; a detection plate is arranged in the groove; an insertion rod is arranged in the middle of the bottom surface of the test bench; a connection ring is arranged at thebottom end of the insertion rod; a connection block is mounted in the middle of the bottom surface of the extrusion plate; and limiting plates are arranged at positions, close to two sides, in the extrusion plate; and a detector is mounted on the rear surface of the extrusion plate. According to the multifunctional test bench for the chip, the chip can be limited through the limiting plates, so that the chip is prevented from being cracked by the extrusion plate due to a mechanical error; through springs and the insertion rod, the chip can be separated and taken out from the test bench; and the whole test bench is simple in structure, relatively practical and suitable for popularization.

The invention relates to a warehousing forklift accelerator, which comprises a rotating handle, a rotary knob rotating shaft, a rotating block, a steel magnet and a PCB (Printed Circuit Board) control circuit board, wherein the rotating handle is arranged at the ends of the rotary knob rotating shaft, the rotating block is fixedly connected with the rotary knob rotating shaft, the steel magnet is arranged at the end of the rotating block, the PCB control circuit board sleeves the rotary knob rotating shaft, a magnet position sensor and a controller are arranged on the PCB control circuit board, the magnet position sensor is connected with the input end of the controller, and the steel magnet is arranged corresponding to the magnet position sensor. The structure of the warehousing forklift accelerator disclosed by the invention is simple, the sensor and a detected object are of a non-contact structure, and thereby failure which is caused by the long-time friction between the sensor and the detected object is prevented; because the warehousing forklift accelerator is provided with a non-gear transmission mechanism, mechanical errors which are caused by mechanical looseness as the result of the abrasion of the transmission mechanism are prevented.

The invention discloses a wheel set press-fitting machine and a wheel set press-fitting method. The wheel set press-fitting machine comprises a rack, two press-fitting mechanisms and a controller, wherein the press-fitting mechanisms are electrically connected with the controller, and the two press-fitting mechanisms are distributed in a spaced mode in the left-right direction and horizontally and fixedly installed at the left end and the right end of the rack correspondingly. The press-fitting mechanisms are used for clamping the two ends of an axle wherein a wheel set is to be installed in a press fitting mode, and conducting press-fitting on wheels pre-assembled at the two ends of the axle in place. Each press-fitting mechanism further comprises a displacement sensor, and the displacement sensors are used for detecting the extending lengths of the press-fitting mechanisms when the press-fitting mechanisms clamp the axle. The controller controls the extension lengths of the two press-fitting mechanisms according to the detection results of the two displacement sensors when the two press-fitting mechanisms clamp the axle, so that the axle can be centered in the rack, and the controller further controls the press-fitting mechanisms to carry out press-fitting on the wheels. The wheel set press-fitting machine achieves convenient installation, and a small installation error and is low in rework rate.

The invention relates to the technical field of processing equipment of dumpling wrappers and discloses a molding device for dumpling wrappers. The molding device comprises a frame and a belt conveyorarranged on the lower part of an inner chamber of the frame; the molding device for dumpling wrappers further comprises a spinning molding component, a feeding component, a driving source and a discharging component; the spinning molding component is arranged in the frame and is used for molding the dumpling wrappers; the feeding component is arranged on an upper end face of the spinning moldingcomponent; the driving source is arranged on the frame and is used for supplying power to the spinning molding component; the discharging component is arranged on a lower end face of the spinning molding component. In the process of molding the dumpling wrappers, the molding device is capable of automatically filling dough into the whole inner chamber of the molding groove under an effect of centrifugal force, so that the mechanical error of the traditional mechanical grinding is avoided and the yield of dumpling wrapper processing is higher.

The invention relates to the technical field of weight metering, and discloses a single-point weight metering system. The system comprises an elastomer and an object deformation telemetering system, wherein the elastomer is made of a low-thermal expansion coefficient material; the elastomer has a fixed mounting position, a weighing position and a displacement deformation position; the elastomer isrigidly connected with the outer part through the mounting position; a tested object applies force on the weighing position of the elastomer; the object deformation telemetering system comprises a monitoring assembly and a monitored device; the monitored device is connected with the displacement deformation position of the elastomer; the monitoring end of the monitoring assembly faces the monitored device; and after the elastomer suffers the force applied by the tested object, the position of the displacement deformation position is changed to ensure that the displacement distance of the monitored device is detected through the monitoring assembly so as to calculate the weight of the tested object. The invention further discloses a weighing device formed by adoption of the single-point weight metering system on the basis of multiple deformations of the single-point weight metering system and a corresponding weighing method.