Fuzhou Yishun precision tell you what is the automatic caliper in the steel rolling industry?

   What are the automatic caliper in the steel rolling industry brought to you by Fuzhou Yishun Seiko? Hope to help you!
   1. Omnidirectional caliper
   The wire diameter gauge adopts 8 photoelectric probes for high-precision measurement. The probe is evenly distributed around the rolling bar. The distance between the measuring points is 22.5 ° arc. The most "insensitive" position of the measuring instrument projection is 11.25 °. According to simple geometric calculation, this point mainly has a protrusion of more than 1% of its diameter. Its projection is about to block the projection of the two adjacent directions and is found The difference between the projection of the convex data and that of the outer diameter of the diameter is less than 1%. The measurement of the time and the same section and the slight twist of the measured object can quickly find the product defects and size fluctuations, and real-time find the process problems in the production.
   2. Four direction caliper
   The caliper is equipped with four groups of photoelectric probes, each of which is composed of parallel light emitting unit and photoelectron receiving unit. The transmitting unit contains special LED light source, and the receiving unit is the data acquisition and processing system. The measured data is transmitted to the upper computer through optical fiber communication. The four-way caliper can measure the outer diameter, ovality, average diameter, maximum diameter, minimum diameter and other information in four directions.

   The above two kinds of callipers can measure the external contour size, cross-section, tolerance zone and out of tolerance, size fluctuation trend prediction, defect analysis curve, maximum / minimum diameter and ovality of the rolling section, and the sub measurement value of each measuring head.

   3. Large diameter caliper
   Large diameter diameter gauge is applied to the outer diameter measurement of large-scale rolling steel. A set of photoelectric double measuring heads is built in it. During the measurement, the outer diameter of two edges of rolling equipment is measured, and the fixed size in the middle is added to get the outer diameter value of large-diameter rolling steel.
   The large diameter caliper is especially suitable for the on-line measurement of seamless pipe and spiral welded pipe rolled by the pilger mill. The maximum diameter, the minimum diameter, the average diameter and the ovality of the pipe section can be measured by the rotation period setting.
   4. Large diameter caliper with adjustable spacing
   The diameter gauge with adjustable spacing and large diameter is measured by a double cylinder probe. Double barrel probe refers to the photoelectric measurement system composed of two sets of transmitting lens and two sets of receiving lens. One transmitting lens and its opposite receiving lens form a group of single probe, and each probe measures one edge size of the object to be measured when measuring with double barrel probe.
   Through the lens in the receiving lens, the parallel beam is imaged on the photoelectric conversion element. When two beams of parallel light are put into the object to be measured, virtual shadow will appear on the image of photoelectric conversion element, and its width is set as L1 and L2 respectively. After processing and calculating the electrical signal sent by the photoelectric conversion element, the corresponding dimensions A1 and A2 of L1 and L2 can be obtained. The dimension D of the measured object can be obtained by adding A1 and A2 plus the net distance b between the two lenses.
   The distance between two groups of single measuring heads of the double lens cylinder measuring head of the diameter measuring instrument with adjustable distance can be adjusted automatically. The adjustment device is mainly composed of the mirror barrel supporting plate, linear guide rail, precision ball screw and stepping motor (the basic structure of the adjustment device is shown in the figure below). When it is necessary to adjust the spacing of the lens barrel, the precise position can be adjusted by driving the step motor to drive the ball screw through the input command of the control system. After the adjustment is completed, the system will automatically count the adjustment distance, and rough measurement can be carried out without the calibration of the distance, and the measurement accuracy is less than 0.2mm. If it is necessary to improve the precision, the corresponding standard gauge block can be used for calibration after the spacing adjustment, and the precision after calibration shall not be greater than 0.05mm.