32results about How to "Reliable detection accuracy" patented technology

A method for testing the parallelism and roughness of the axial end surface of a bearing, in which the bearing to be tested (7) is placed flat on a measuring platform (6), and the side fulcrum (5) is aligned by moving the side fulcrum fork (4). Accurate the radial end face of the bearing under test, contact the sensor probe (8) with the axial end face of the bearing under test (7), make the measuring platform rotate one circle at a low speed through the motor (13), and the sensor probe against the axial end face of the bearing under test It also detects one circle and sends out a detection signal. The detection signal is input into the computer, and the parallelism or roughness of the axial end surface of the bearing under test can be detected through the comparison of the computer's pre-stored programs. For the parallelism or roughness detection of batches of small and medium-sized outer rings or batches of small and medium-sized inner rings and batches of small and medium-sized sleeve parts, the detection efficiency is higher, and the detection accuracy is more accurate and reliable.

The invention discloses a shield machine failure monitoring and early warning system and method. The system includes a host monitoring machine, a shield machine working condition detection device for real-time monitoring of the working condition information of the monitored shield machine, The controlled early warning prompt device and the timing circuit connected with the upper monitoring machine, the early warning prompt device is connected with the upper monitoring machine; the working condition detection device of the shield machine includes the main bearing working condition detection for real-time monitoring of the working condition of the main bearing of the shield machine device, a cutterhead detection device for real-time monitoring of the shield machine cutterhead, and a cutterhead drive detection device for real-time monitoring of the working conditions of the cutterhead drive system; the method includes steps: step 1, shield machine working condition monitoring and The monitoring information is uploaded synchronously; 2. Analysis and processing of shield machine working condition information. The invention can timely and accurately monitor the faults existing in the shield machine, and can give early warning prompts according to the monitoring results.

The invention relates to a leakage test device for a medical filter. The leakage test device for the medical filter is characterized by comprising a frame, a water tank fixed inside the frame and an electric control cabinet arranged at one end of the frame, wherein the upper part of the water tank, corresponding to the frame, is provided with a filter submersible cylinder through an installation frame of the submersible cylinder, and is mounted with a compact cylinder which can be moved up and down and a sealing cylinder which can be horizontally moved through an installation frame of the sealing cylinder. The leakage test device for the medical filter has the following advantages: not only can the symptoms such as red and swelling hands, arthralgia and the like and the damage to human health caused by the fact that the hands of an operator are soaked in water for a long time be prevented, but also the automation degree is high, the detection operation is simple and rapid, the detection accuracy is reliable, the detection quality of a tested unit is improved, and the detection efficiency is greatly improved.

The invention discloses a large-aperture ultra-precise grinding machine integrated system. The large-aperture ultra-precise grinding machine integrated system comprises a Z-axis spindle box and an auxiliary two-dimension vibration laser scanning in-situ detection system which is detachably connected to the Z-axis spindle box; the auxiliary two-dimension vibration laser scanning in-situ detection system comprises a follow-up guide way, an X-axis guide way and follow-up guide way connecting parts which are matched and connected with the follow-up guide way; the follow-up guide way is parallel to the X-axis guide way and can slide back and forth in the direction of the X-axis guide way, and the follow-up guide way connecting parts keep still in the direction of an X axis. The large-aperture ultra-precise grinding machine integrated system further comprises an in-situ grinding wheel dressing device which can achieve in-situ automatic dressing of a cambered surface grinding wheel. The large-aperture ultra-precise grinding machine integrated system is an ultra-precise optical grinding machine which combines machining, detection and dressing and is oriented to large-aperture optical mirrors, a non-contact sensor is applied to the large-aperture optical mirror grinding machine, the detection efficiency and the machining efficiency can be greatly improved, and the errors caused during carrying of detected elements are reduced to the hilt.

The invention provides an airtightness detection device for a seal, comprising: a seal unit, including a mounting table and a pressing mechanism, the mounting table is provided with a sealing head, and when the sealing member is located on the mounting table, the sealing head can be inserted into the opening of the seal and seal the opening, the pressing mechanism is used to abut against the seal and press the part around the opening of the seal on the plugging head; the air supply unit is provided with an air supply pipe, And when the gas supply unit is activated, it can output gas along the gas supply pipe, wherein the gas supply pipe is used to connect with the mounting platform or the sealing part, and when the sealing unit and the sealing part are assembled, it forms a closed cavity with the sealing unit and the sealing part. The detection device provided by this scheme can form a tightly sealed airtight cavity when the seal is assembled with it, and air can be fed into the airtight cavity to realize the detection of trachoma on the seal by using the air tightness detection method, false detection and missed detection The risk is small, and the loading and unloading operation between the sealing unit and the sealing member is also very simple, and the detection cost is low.

The invention discloses a method for testing high temperature resistance of a magnetic head. The magnetic head comprises an air bearing surface and two shielding layers. The method includes: applying a plurality of first magnetic fields with different intensities to the magnetic head in the first direction and measuring a first output parameter curve; repeatedly applying second magnetic fields with different intensities in the second direction, simultaneously applying changed first magnetic fields in the first direction, and measuring a plurality of second output parameter curves; and judging whether changes exceeding an admissible value exist in the first output parameter curve and the second output parameter curves or not so as to screen defective magnetic heads, wherein the first direction is perpendicular to the air bearing surface of the magnetic head, and the second direction is perpendicular to the shielding layers of the magnetic head. The defective magnetic heads with poor high temperature resistance can be highly precisely screened without being heated.

The invention discloses a two-dimensional vibration auxiliary laser scanning in-situ detection system which comprises a servo guide rail, an X-axis guide rail and a servo guide rail connecting piece connected with the servo guide rail in a matched manner and further comprises a Y-axis voice coil motor, a laser displacement sensor, an X-axis voice coil motor and an X-axis movement platform. The servo guide rail is parallel to the X-axis guide rail and can slide back and forth along the X-axis guide rail and the servo guide rail connecting piece remains still in the X-axis direction. Due to the arrangement of the servo guide rail, the Y-axis voice coil motor connected with the servo guide rail connecting piece can remain still when the servo guide rail is pulled by the laser displacement sensor to move along the X-axis guide rail, the mass of the Y-axis voice coil motor cannot become the resistance of movement of the laser displacement sensor in the X-axis direction, and the power and the size of the X-axis voice coil motor do not need to be increased. By the adoption of the system, in-situ detection is achieved, the detection efficiency is good while accuracy is guaranteed, the anti-interference performance is good, and the system can be used on different occasions for detection of different targets.

The invention discloses a cultivation substrate pretreatment and component rapid spectral detection integrated system. The cultivation substrate pretreatment and component rapid spectral detection integrated system comprises a cultivation substrate pretreatment device, a pneumatic conveying device, a cultivation substrate crushing granular component rapid detection device, a cultivation substratecrushing particle recycling device, a control device and a computer, wherein the input end of the pneumatic conveying device is connected with the output end of the cultivation substrate pretreatmentdevice, the output end of a pneumatic output device is connected with a sample feeding steel pipe inlet of the rapid detection device of the cultivation substrate crushing granular component; a sampledischarging steel pipe outlet of the rapid cultivation substrate crushing particle component rapid detection device is connected with an inlet of the cultivation substrate crushing particle recyclingdevice; the computer is connected with a spectrograph in the rapid detection device of the cultivation substrate crushing particle component through a data line; and the control device is correspondingly connected with the pneumatic conveying device and the cultivation substrate pretreatment device through wires, and the cultivation substrate crushing particle component rapid detection device isconnected with the cultivation substrate crushing particle recycling device

The invention discloses a method capable of being used for detecting the accuracy of a rotating axis of a five-axis linkage machine tool. The method comprises the following steps that (1) detection preparation is carried out, tools are prepared, and the tools comprise a detection ball, two magnet stands and a dial test indicator; (2) in a stand gauge-1, flat measurement is carried out, a compensation value i=((h-g) / 2)*cos(30) is obtained, and the i value is compensated to a machine tool parameter corresponding to a d value; (3), in a stand gauge-2, vertical measurement is carried out, a compensation value i=((j-k) / 2)*cos(30) is obtained, and the i value is compensated to a machine tool parameter corresponding to a c value; (4) repetition measurement testing is carried out, an error is approximated. Through the way, the method capable of being used for detecting the accuracy of the rotating axis of the five-axis linkage machine tool is simple and easy to operate, and does not need to rely on complex and high-cost special tools, does not need to rely on special macro program or special complex algorithm, and has low detection cost and reliable detection accuracy.