How to use CNC cutting machine to improve the economic benefits of enterprises
How to use CNC cutting machine to improve the economic efficiency of the company Changjun Shijun Jianting (Changqing Oilfield Branch Machinery Manufacturing Plant Xi'an Sheng market competitiveness. This article focuses on how to use CNC cutting machine cutting to further improve product economics Firstly, the degree of mastery of the operating system of the CNC cutting machine should be improved, and the cutting operation should be carried out under reasonable parameters. Secondly, the process control in the cutting operation should be strengthened to reduce the repair rate; again, the steel plate with reasonable specifications should be selected to improve the steel utilization. Rate; in the end, attention should also be paid to cutting methods that improve cutting efficiency. Table 1 Gangyouge Our factory is a professional manufacturer of oil pumping units under the Changqing Oilfield. The annual output of pumping units is about 4,000 units, and about 12,000 tons of steel plates are needed. Therefore, improving the utilization rate of steel plates can effectively improve the economy. benefit. The function of the CNC system upgrade of the CNC cutting machine is simpler, faster and more convenient in programming and transferring to the CNC cutting machine. Therefore, this article discusses how to use CNC cutting machine cutting to further improve economic efficiency. This article discusses the use of CNC flame cutting machines to further improve economic efficiency from the following four aspects. 1 further master the operating rules of CNC flame cutting machine according to the thickness of the cutting parameters, cutting parameters including cutting nozzle model, oxygen pressure, cutting speed and preheating flame energy, etc., the choice of process parameters are mainly based on the type of gas cutting machine and can be cut Steel plate thickness. Cutting should start at the edge. Cut as much as possible from the edge, not piercing and cutting. Using the edge as a starting point will extend the life of the consumable. The correct way is to align the nozzle directly to the edge of the workpiece before starting the flame cutter. When cutting workpieces of different sizes on the steel plate, the small pieces should be cut first and then the large pieces should be cut. 2 How to reduce the error when cutting with CNC flame cutting machine During the processing of the structural parts of the pumping unit, the quality of the blanking of the steel plate is the key to the quality of the whole machine. According to the traditional method of cutting, irregularly shaped steel plate blanking is usually based on manual cutting. Since 2001, our factory has used CNC cutting machine tools to cut materials. This article focuses on the control of errors in CNC cutting. The error caused by CNC cutting and cutting is mainly the deformation error of the steel plate and the dimensional error of the workpiece when the steel plate is cut. 2.1 The deformation error of the steel plate is the deformation of the steel plate itself. Mainly refers to the uneven thickness of the steel plate, the unevenness of the plate surface, which has been produced in the production, transportation and hoisting process of the steel plate, and can be leveled by the leveling machine. Thermal deformation of the steel sheet. 1 The impact of CNC cutting programs. This is mainly caused by the unreasonable selection of the punching point, the cutting direction, the cutting order, and the like during programming. Through reasonable nesting, the cut parts are guaranteed to meet the accuracy requirements. 2 The steel plate support surface is not flat. The steel plate changes from a flat surface to a bevel, which causes errors in the CNC-cut parts. Especially for narrow and long steel sheets, it is likely that distortion will also occur. Dimensional error of the blanking workpiece The dimensional error of the blanking workpiece refers to the difference between the actual size and the theoretical size of the blanking workpiece. The reasons for the dimensional error are various, mainly in the following aspects. The purity of oxygen is the cause of dimensional errors. The purity of oxygen is an important factor affecting the quality of cutting. The purity of oxygen is low, not only the cutting speed is greatly reduced, the cutting surface is rough, the lower edge of the incision is slag, and the oxygen consumption is increased, resulting in an increase in cost. The parallelism error between the working platform supporting the steel plate and the longitudinal and transverse guide surfaces of the CNC cutting machine. Since the working platform supporting the steel plate is often bumped by impact during loading and unloading, the surface of the working platform supporting the steel plate is easily formed not to be parallel with the longitudinal and transverse guide surfaces of the cutting machine, which may cause a change in the distance between the cutting nozzle and the steel plate. , causing errors in the size of the workpiece to be unloaded. The perpendicularity of the surface of the steel plate to the cutting tip. The perpendicularity error between the surface of the steel plate and the cutting tip is the main source of the error in the size of the workpiece. This is because when the cutting nozzle is not perpendicular to the steel plate, the formed cutting surface is inclined, so that the dimensions of the front and back sides of the workpiece are different, and there is an error. 3 Excellent quality steel plate directly affects the economic benefits of the enterprise 3.1 Selecting the appropriate plate size The pumping unit has many forms, irregular shapes and large area, so it is more difficult to work for the calculation of CNC cutting and discharging. Taking the S8mm thick steel plate as an example, the 8mm steel plate used by our factory is now used for the side plate of the W6 and W7 pumping units. The shape of the part is fusiform, the maximum size is 2700mmX698mm (length X width), now use two A comparison of different specifications of the steel plate, Table 1. It can be seen that if you can purchase the appropriate specification plate according to the actual cutting arrangement, it will reduce a lot of unnecessary waste. When the quality of the steel plate is checked and accepted by the storekeeper, it is found that the steel plate has been stored in the pound or has been deformed and bent. Bending and deforming steel plates will increase the difficulty of cutting, and it is easy to cause poor cutting quality. After cutting, a sledge hammer is required to knock the shape, which affects the appearance of the product and increases the production time, which delays the production progress. If the steel plate is eclipsed, it is easy to break the wire and the inconsistency of the cutting surface during the cutting process. 4 Improve cutting efficiency Cutting efficiency has been neglected, but it is the top priority of production. The efficiency of the directly affects the steel utilization and cutting quality. With the intensification of market competition and the rise in steel prices, traditional cutting has been unable to meet the high-volume and high-efficiency cutting requirements. A more scientific approach to CNC cutting should be proposed to meet production needs. Nesting cutting. The traditional cutting method can no longer meet the current production status of our factory. It is a headache for a large number of complicated and extremely irregular shapes. However, through computer-aided technology, the whole board nesting and the edge nesting material are realized, the utilization rate of the steel sheet is improved, a large amount of scraps generated by partial nesting and partial cutting are effectively avoided, and the remaining steel materials are repeatedly nested and used, so that the utilization rate of the steel sheet is greatly improved. . Cut by the side. Edge cutting is the most effective way to save on cutting supplies. The parts on the straight side of our factory are still quite a lot, such as the side plates, the top plate and the bottom plate of the pumping beam, the side plates of the base cylinder and so on. Using computer programming technology, the rational use of the edge cutting method, only one perforation, complete the continuous cutting of multiple parts, improve the production efficiency, but also create a good economic benefit for our factory. Reduce the distance from the starting point of the perforation to the part. When I first started using the CNC flame cutting machine, the distance from the starting point of the perforation was 10mm 15mm due to unfamiliar operation. After the use time became longer, we found that the distance between the starting point of the perforation and the part to be cut was cut. The diameter of the mouth can be up to the radius, generally 3mm4mm. This operation reduces perforation and warm-up time and reduces the amount of oxygen used. In short, from the operation method of the numerical control flame cutting machine, reducing the error of the CNC cutting and cutting, to the reasonable selection of the steel plate specification to improve the cutting efficiency, we can completely reduce the failure of the cutting, improve the quality of the cutting parts and the utilization rate of the steel plate. Minimize production costs, improve economic efficiency and product competitiveness.
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