In the application of mechanical and electrical products in bearing pipe cutter

Pick to: this article mainly introduces the design principle of biaxial servo pipe cutter, at the same time introduced the use of units of our PLC, servo, TP04G overall solution on bearing pipe cutter, and before cutting machine is compared in the automation level, such as processing efficiency, scrap rate significantly. Keywords: biaxial servo pipe cutting and A series servo, 32 eh00t2, interrupt pulse banned 1 introduction bearing pipe cutter is the initial process of mechanical bearing processing field, it is mainly the hollow tube, based on the needs of bearing height, cut into the length size of the small circle, usually A machine in A bearing factory needs A lot of machine tools work continuously. Previous pipe cutter is on adjusting the length of the pipe cutting machine, is to send a expect flat, and then the servo or stepping control segment cut a feed, and then send a material, this cycle, but often this pipe cutting efficiency is low, and the feeding part because send does not reach the designated position, often caused by mechanical positioning inaccurate and cut out the circle is unqualified, increase the rate of scrap, aiming at this problem, design a new kind of biaxial pipe cutter, which is the length of the coil not by feeding head to ensure peace, but by servo positioning to determine the circle of long, also a feed can be cut a lot of products continuously, and there is no waste, can be truly efficient automatic cut pipe, and a full range of protection function, can guarantee a worker can tube at least three above such machine at the same time, the human cost rising now, this machine is bound to become a leader in this field. 2 biaxial servo cutting machine automation system design biaxial servo cutting machine part of the core is a two axis servo loop with action, a shaft for dragging plate axial shaft, another shaft axis for the cutting knife cutting, dragging plate axial shaft is mainly a circle positioning with long, ( 一) When the direction of the axis to yearn for tube, when touching the tube head positioning sensors will confirm tube position, into the PLC hardware interrupt, pulse ban, and then do a compensation according to the length of the pipe cutting positioning; （ b） Positioning is tangential pipe cutting knife, cut the pipe ends; Axis willing to forward to repeat a, b, until to the end of the feeding pipe cutting, namely limit position, the axial back, then feeding, feeding, repeat a, b, this is the most basic of biaxial servo pipe cutting action process. Biaxial servo cutter with ordinary cutting machine mechanical structure is shown in figure 1. Figure 1 biaxial servo cutting machine and ordinary original cutting machine mechanical structure diagram 3 in PLC controller control scheme of the three. 1 PLC biaxial servo due to the use of the biaxial servo control, so the scheme is used in the 32 eh00t2 type PLC host do positioning control, at the same time, using interrupt way to realize axial positioning of the switch. Due to the use of non-contact sensor ( X0） Pulses of external interrupt to ban, and then switch to the length positioning, using a screw transmission at the same time, so the precision problem can guarantee ( 0. Less than 1 mm) As shown in figure 2, the specific PLC system; Control process is shown in figure 3. Figure 2 tutu 3 PLC system structure of PLC controller control process 3. 2 axial positioning length calculation and control of new kind of biaxial servo cutter and cutting machine is the most critical part of the ordinary is the axial positioning and pipe cutting length control and calculation, a new type of pipe cutter don't need flat to make pipe cutting positioning, but only need to let the servo axis tube direction, such as length positioning met again, but this solution need high response, and certain programming skills, external interrupt of the above mentioned pulse switch is a faster and more accurate solutions, through the figure 4 Pipe cutting positioning and calculation, you can see the length of the pipe cutting is divided into two parts: the L1: segment distance, the distance can be mechanical adjustment, general adjustment after don't need to make big changes; L2: compensation, the compensation range is according to actual cutting length of the pipe need to make a small adjustment; So cut the pipe length L = L1 + L2. Past the old pipe cutter L1 is equal to the length of the pipe cutting, and a knife on the space and the location of the head of absolute unchanged, but the new machine knife and head position is integral with the shaft in the walk, which is why the new machine can be the key to one feeding more cutting. Figure 4 pipe cutting positioning and calculating 4 conclusion bearing industry is intensive processing industry, all companies only care about a problem: single machine production, evaluate the stand or fall of a machine, the efficiency is almost it's life, and before the old pipe cutter feeding a material cutting tube, the efficiency of nature is not very high, but the biaxial pipe cutter, can send a material for cutting tube for many times, especially in cutting short lap, send a material can cut more than 10 times, that speed is past pipe cutter.
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