Founded in 1984 in Germany with headquarters in Germany, LAP was founded in 1984 and has more than 30 years of experience in laser research and development as a pioneer in laser technology for the industrial and medical applications of single point and line lasers. Measuring Technology in Industrial Applications Developed a measurement system dedicated to the manufacturing and processing of metals LAP Corporation develops, manufactures and markets laser scribing lamps, laser-positioning projectors and laser measuring systems for dimensional measurements.
RDAP Laser Calipers from LAP, Germany are designed for on-line, non-contact real-time measurement of hot, cold and cold conditions for rods, wires and tubes. Different shapes are measured using 'true shape' measurement technology for rod, wire and tube plants Improve the quality of products and the level of automation and control to create favorable conditions. Provide 1μm resolution and up to 120 m / s at the rolling speed of the online measurement. Available in two basic types: RDMS900 and RDMS180, can measure up to Φ80 mm and Φ160 mm rod, wire and tubing OD The RDMS caliper uses laser high-speed scanning and full digital processing to provide 1μm resolution and reliable measurements.
The RDMS Caliper uses laser high-speed scanning and full digital processing to provide 1μm resolution and reliable measurements.
The LAP-RDMS uses semiconductor laser high-speed scanning with shading opto-electronic detection. The transmitter (semiconductor laser) and receiver (photodetector) are housed in separate housings to ensure the maximum clarity of the laser micro-metrology unit while heat The impact of radiation on the measuring instruments is minimized.
Each micro-measuring unit comprises a single laser source, a rotating polygon mirror, a transmitting lens, a receiving lens and a photodetector, and the red laser beam emitted by the semiconductor laser is reflected by the rotating mirror onto the transmitting lens. Due to the rotating reflection, The color laser beam sweeps through the entire transmission lens at a rate that is refracted by the lens into parallel beams and swept across the measurement object at a velocity of 225 m / s. The laser beam that is not occluded by the measurement object casts directly onto the photodetector through the reception lens , The formation of potential; and the object is detected by the light is not projected onto the photodetector, no potential to form; thus in the photodetector to form different areas of light and dark, that is bright - dark - the length of time between This is an axial diameter of the object being measured.
In practice, the RDMS provides measurements of 4 to 6 axes, so the size and shape of the entire section can be obtained, while the laser scanning frequency is 400 times / s, which is enough to meet the rolling speed of up to 120 m / s. Digital processing (DSP) technology, making the system significantly improve the accuracy and response can be given a complete cross-section for each 300 mm is precisely because of the high scanning frequency, short response time to ensure that the actual measurement process without rolling The effects of process vibration, impact and measurement of material eccentricity and jitter provide resolutions up to 1 μm.
The RDMS measurement system uses a compact, integrated environmental interference system designed to measure the outside diameter of rods, wires and tubes during high-speed rolling and provide an intuitive view of the cross-sectional dimensions and shape.The system uses full digital processing to measure Complete the detection signal processing, and transform it into high-resolution digital signal transmission to the PC control cabinet, analysis, combination, display, transmission to the host computer.
System consists of four main components, including 4 to 6 sets of laser micro-measurement unit measurement framework; air purge cooling device; display, control, communication terminal, calibration.
The RDMS measurement frame is welded with fully annealed steel structure for maximum stability. Each laser micro-measurement unit is supplied with a uniform power supply via a connector located on the edge of the frame with all wires inside the frame. Air blowing into the frame, cleaning the sensor window, to avoid the impact of hot.
Advantages of the LAP-RDMS caliper
1) Laser multi-axis measurement, resolution 1μm.
2) No rotating parts, such as no slip ring, bearings, seals and other wear and tear.
3) The service life of up to 30 000 ~ 100 000 h.
4) high redundancy design, even if a shaft failure, can work.
5) Fast measurement is 7 to 20 times using CCD technology, LAP laser measurement is 24 ~ 75μs, CCD is 500μs.
6) The maximum measurement temperature up to 1300 ℃ (for special steel).
7) WINDOWS NT or WINDOWS 2000 as a platform for real-time data display.
8) measurable diameter and length, can detect eccentric roller, rolling defects and so on.
9) air purge design, there is no leakage, mud and other common problems in the water-cooled method.
10) The system comes with filtering and blowing device, providing clean air and the system's internal cleaning.
11) No air compression and filter drying unit, all power consumption less than 4 kW.
LAP has developed the RDMS-530 system for measuring round billet, billet, and slab bloom.The innovative system offers the possibility to increase the product yield, quality and automation of the initial mill with a resolution of less than 1 μm, System measurement flexibility greatly increased.
With the rapid development of the mechanical, electronic and optical industries, the diversity and complexity of the problems that the laser measurement system helps to solve has led to the continuous development of new laser systems, their cost and development time also continue to increase, The accuracy of the workpiece parameters are also getting higher and higher, the traditional measurement methods can no longer meet the needs of all parties.Laser caliper also came into being, on the whole, Lap laser caliper used as the measured object Of the measurement brings great convenience to achieve high-precision real-time detection, enhance the degree of automation, reduce labor intensity.