CNC pipe cutting machine equipment Introduction and advantages
CNC pipe line cutting machine is a steel pipe and non-ferrous metal pipe at the combination of the cross-line hole, cross-line end, elbow (shrimp rice section) for automatic calculation and cutting equipment. The machine is widely used in construction, chemical, shipbuilding, mechanical engineering, metallurgy, electricity and other industries of pipe structure parts cutting and processing. Most of this kind of processing in the past used to make models, dashes, artificial samples, manual cutting, artificial grinding and other backward and complex operation process.
The CNC pipeline cross-line cutting machine is mainly composed of control system, arm system, drive device, clamping device, support device, rail, gas line system, control cabinet, operator's station and so on. Equipped can be with a flame cutting system (including preheat part) as the main cutting system. If the user needs to cut stainless steel and non-ferrous metal pipes, the machine can be equipped with air plasma cutting system, as the main cutting system or as an auxiliary cutting system. There are a few special features of the cross-line cutter:
1,. in the rotating chuck part, the use of roller structure, to ensure that the chuck clamping work pieces at the same time, so that the work pieces can move vertically smoothly.
2. in the feed chuck part of the floating clamping system, can compensate for the deviation of the center axis of the work piece. Even if the pipe parts have a large insistency can still obtain better accuracy. When the work piece rotates at high speed, it can be controlled inter-control to effectively avoid the mechanical stress of the plate. This is because steel pipes are factory-approved with certain deviations, such as wall thickness deviations and bending deviations. These create the corresponding mechanical stress on the card plate as they rotate.
3. cross-line cutting machine due to the two chuck co-axial, which makes the work piece after clamping the left and right ends automatically on the same axis, which solves the error caused by the clamping steel pipe. When the steel pipe rotates, the steel pipe is greatly improved by the beating problem at the cutting site when the rotating chuck clamps the steel pipe and restricts it, so that the steel pipe re-fits the center axis of the chuck here. And the torch is mainly cut near the rotating card plate, so that it is easy to obtain accurate cross-line trajectory.
4. the use of dual-mobile system, that is, the delivery card can be in the bed body left and right movement, while the torch can also be left and right movement. The left and right movement of the delivery tray is mainly to position the steel pipe in the direction of the delivery length, while the left and right movement of the torch is to achieve the cutting of the cross-line trajectory in conjunction with the rotational movement of the rotating tray when cutting. At this point, the karst only needs to complete a relatively simple swing movement, can effectively improve the cutting accuracy and speed. If the torch does not move left and right, the movement is all carried in by the cassette, which requires continuous inlet and return movement of the steel pipe to complete the cutting of the consistent trajectory. At this time, the steel pipe is pressured from time to time, and is pulled, which will produce additional force on the steel pipe, resulting in inaccurate cutting trajectory.
5. the machine tool has the function of upper detection, the use of imported detection elements and execution components, to ensure the accuracy of detection, can detect the cutting position of the tube deformity (e.g. shape roundness error, etc.), thus solving the error caused by the steel pipe is not round. According to the measured value, the system automatically corrects the position of the compensation cutting moment by the torch adjustment shaft to ensure the cutting accuracy.
(1) Small diameter steel pipe is often relatively thin, so the rigidity is insufficient, there will be obvious sagging bending phenomenon. Such as the use of traditional CNC cross-line cutting machine (structure is mostly single-card plate structure), will cause the steel pipe in the rotation process on the carrier beat, resulting in difficulty in the centering of the work parts, so that the torch can not be cut normally. Especially when cutting welded bee surface, it can lead to overcut or undercut phenomenon.
(2) In CNC cross-cutting equipment, the process used is thermal cutting process (including plasma cutting and oxygen cutting), the cutting speed is related to the thickness of the steel pipe wall, but not the pipe diameter of the steel pipe. The thinner the wall thickness, the higher the cutting speed requirements. The smaller the radius of the steel pipe and the thinner the wall thickness, the higher the required angular velocity, i.e. the higher the rotational speed of the tube, as can be known from the formula V=rω (V is the line velocity and the radius of the tube is the angular velocity of the tube. The rotation speed of the existing pipe cutting equipment is relatively low, which can not meet the needs of high-speed cutting of small pipe diameter steel pipe.
