49results about How to "Angle deviation is small" patented technology

Fastening apparatus comprises a frame having a pair of spaced arms supporting respective cooperable fastening members, loading of the frame during a fastening operation tends to spread the arms and cause variation of a desired predetermined relationship between the fastening members. One of the members is mounted on one arm of the frame by a holder constructed to deform elastically and thereby to provide at least partial compensation for the variation.

The invention belongs to the field of precision measurement technology and optical engineering, and specifically relates to a three-dimensional angle measurement device and method based on dual-wavelength spectroscopic self-collimation; the device consists of a light source, a beam splitter, a transmissive collimator, a fixed mirror, and a cooperative target , green light filter, red light filter and RGB color image sensor; the filter and the cooperative target in this method make the measurement beam divided into red and green measurement light, which are respectively reflected by the fixed plane reflector and the cooperative target After returning, the respective images are formed on the image sensor, and the pitch angle, yaw angle, and roll angle of the cooperative target relative to the optical axis are calculated by using the two image positions, so as to have the ability to detect the three-dimensional rotation angle of the measured object space; The present invention adopts the optical lever amplification principle for the roll angle, which is consistent with the measurement principle of the pitch angle and yaw angle. Therefore, it has the technical advantage of high precision and large working distance for three-dimensional angle measurement, and has the ability to increase the measurement under the same working distance. Accuracy, or the advantage of increasing the working distance under the same measurement accuracy; the RGB color image sensor receives two measurement spots, which reduces the requirements for subsequent image processing technology and improves the frequency response of the measurement device. In addition, the cooperative target designed in the present invention has the technical advantages of simple structure and low production cost.

The invention relates to a production method of a polaroid for an Supper Twisted Nematic (STN) LCD, which comprises following steps of: 1) cutting a phase difference membrane rolling material into single phase difference membranes with a certain angle theta, sequentially connecting the cut single phase difference membranes along the slow axis direction by using scotch tape, then rolling to be a rolling shape, and continuously compounding the cut single phase difference membranes with a rolling polarizing film reel by reel on a compound machine without stopping so as to compounding a binding agent between a phase difference membrane layer and a polarizing film layer and form a binding agent layer; 2) compounding a peel membrane with the upper surface of the phase difference membranes compounded in the step 1, compounding a pressure sensitive adhesive between a peel membrane layer and the phase difference membrane layer to form a pressure sensitive adhesive layer; and 3) compounding a protective membrane with the lower surface of the polarizing film compounded in the step 2 to obtain the polaroid. The Polaroid can effectively enhance compound accuracy, reduce angular deviation during compounding, can be used without regulating angles again and can enhance production efficiency.

Fastening apparatus comprises a frame having a pair of spaced arms supporting respective cooperable fastening members, loading of the frame during a fastening operation tends to spread the arms and cause variation of a desired predetermined relationship between the fastening members. One of the members is mounted on one arm of the frame by a holder constructed to deform elastically and thereby to provide at least partial compensation for the variation.

The method for improving the spline accuracy of the torsion bar shaft is characterized in that the torque is transmitted to the middle section of the torsion bar shaft to drive the torsion bar shaft to rotate, and the hobbing cutter of the double-headed gear machine tool is used to simultaneously process the splines at both ends of the torsion bar shaft. Before machining, finely adjust the coaxiality and circular runout at both ends of the torsion bar shaft and improve the straightness and stiffness of the torsion bar shaft to improve the machining accuracy of the splines at both ends of the torsion bar shaft and reduce the deviation of the splines at both ends of the torsion bar shaft. Thereby, the precision series of the splines at both ends of the torsion bar shaft is improved. The invention overcomes the defect that the spline of the slender torsion bar shaft is easily deformed due to gravity and torque transmission during the processing of the spline, improves the stability of the torsion bar shaft during the spline processing, thereby improving the processing accuracy of the spline and reducing splines at both ends. The height deviation of the top circle of the key tooth and the angle deviation of the corresponding teeth make the angle deviation of the torsion arm connected with the spline not exceed 0.2°. The present invention also provides a torsion bar shaft processed by the method for improving the spline precision of the torsion bar shaft mentioned above.

The invention belongs to the field of precision measurement technology and optical engineering, and specifically relates to a three-dimensional angle measurement device and method based on polarization splitting self-collimation; the device consists of a light source, a polarizer, a beam splitter, a polarization beam splitter, an image sensor, a collimation mirror, a fixed plane mirror and a cooperative target; in this method, the measuring beam is divided into two mutually perpendicular measuring beams through the cooperative target, which are respectively reflected by the fixed plane mirror and the cooperative target and returned to form respective beams on the image sensor. Image, using the two image positions to solve the pitch angle, yaw angle and roll angle of the cooperative target relative to the optical axis, so as to have the ability to detect the three-dimensional rotation angle of the measured object space; because the present invention uses an optical lever for the roll angle The magnification principle is consistent with the measurement principle of pitch angle and yaw angle, so it has the technical advantage of high precision and large working distance for three-dimensional angle measurement, and then has the ability to increase measurement accuracy at the same working distance, or increase work at the same measurement accuracy The advantage of distance; two channels of measurement light spots are received by two channels of image sensors, which reduces the requirements for subsequent image processing technology and improves the frequency response of the measurement device. In addition, the cooperative target designed in the present invention has the technical advantages of simple structure and low production cost.

To provide: a substrate comprising diamond which is free-standing, in which warpage is suppressed, and variation in the angles of the crystal axis over the entire surface of the substrate is suppressed; and a method for producing the diamond substrate. In the present invention, an underlying substrate is prepared and multiple columnar diamonds comprising diamond single crystals are formed on one side of the underlying substrate. The diamond single crystals are grown from the tip of each columnar diamond and the diamond single crystals grown from the tip of each columnar diamond are coalesced to form a diamond substrate layer which is separated from the underlying substrate to produce a diamond substrate from the diamond substrate layer. Thus, the difference between the highest portion andthe lowest portion of the diamond substrate in the thickness direction is over 0 um and 485 um or less, and the variation in the angles of the crystal axis over the entire surface of the diamond substrate is over 0 and 3.00-degree or less.

The invention discloses an air inlet volute applicable to a test dolly. The air inlet volute comprises a volute inlet used for guiding in airflow, a main diversion section used for diverting and outputting the airflow guided in by the volute inlet, and an inlet transition section which is arranged between the volute inlet and the main diversion section and used for coupling an up stream air path pipeline to the main diversion section. The main diversion section is provided with an annular cavity used for accommodating the airflow which is guided in through the volute inlet and promoting the airflow to flow annually, and an outlet allowing the airflow flowing annularly to flow out axially. According to the air inlet volute applicable to the test dolly, volute loss is low; outlet flow fieldsare uniform; and outlet airflow angle distribution is uniform, and the angle deviation is small.

The invention discloses a rotating multi-station curved surface bonding device, which comprises a frame, a processing platform is arranged on the frame, a curved glass module and a film module connected and arranged are arranged on the processing platform, and the curved glass module includes The first roulette, the middle part of the first roulette is provided with a first transmission shaft, one end of the first transmission shaft is connected with a first driving device, the first roulette is provided with a pushing device, a pushing plate and a curved glass mold, and the baffle is arranged on At one end of the push device, the curved glass mold is set on one side of the push plate; the film module includes a second wheel, the middle of the second wheel is provided with a second drive shaft, and one end of the second drive shaft is connected with a second drive device, the second wheel A plurality of grooves are arranged at intervals on the periphery of the disk, and a film mold is arranged in the grooves. According to the invention, the curved glass module and the thin film module are successively located at different stations according to the change of the rotation angle, thereby realizing the continuous lamination process of the curved glass and the film, and effectively improving the working efficiency of the lamination of the curved glass and the film.