CNC machine tools have many advantages, such as high flexibility, high processing accuracy, stable processing quality, high productivity, conducive to the modernization of production management, improved labor conditions, and so on. They are widely used in engineering machinery manufacturing. CNC machining technology can complete the manufacturing of parts and components with high efficiency, high speed, high quality, and high accuracy, and has become an important technical support for modern construction machinery manufacturing. CNC machining technology is widely used in the construction machinery manufacturing industry. The rapid development of construction machinery manufacturers has also been promoted with the advancement of the transformation of numerical control processing technology (high-precision, high-quality, intelligent). Let a more efficient, lower price, and improved supply chain system be established globally.
The super long boom is an important structural component of the super long boom excavator. Because the super long boom excavator is mainly used in construction demolition, river dredging, and dredging, it has a wide range of engineering applications. The super long arm is slender and hollow, which requires very high assembly size and position accuracy. The super long arm has a complex structure, large external dimension, slender shape, and heavyweight. The structure quality is mainly controlled by the hole size, position accuracy, and surface roughness. There are many processing contents of the super long arm, including hole system, plane, and threaded hole. During the processing, the tool needs to be changed constantly and the workpiece needs to be hoisted many times. The precision of each processing surface is high, and it is difficult for ordinary machine tools to ensure processing accuracy, quality, and production efficiency. To improve the product quality, it is necessary to select CNC machining machines with high machining accuracy, design reasonable special fixtures, formulate reasonable machining processes, and try to complete the machining tasks in one clamping; In addition, to avoid machining deformation, when machining the end face of each hole, the symmetry plane should be selected as much as possible. The CNC floor type boring and milling machine has the characteristics of a wide process range, excellent performance, high productivity, high precision, good rigidity, and strong versatility. Therefore, selecting the CNC floor type boring and milling machine for the processing of the excavator's super long arm can solve the difficulties in the processing of the super long arm and ensure the quality of the workpiece.
A super long arm (pipe) is an important structural component of the excavator. Because the super long arm excavator is mainly used for building demolition, river dredging, mine operation, and material transportation, it has a wide range of engineering applications. The super long arm (tube) is slender and hollow, requiring very high assembly size and position accuracy. The super long arm (tube) has a complex structure, large external dimension, long and thin external shape, and is heavyweight. The structure quality is mainly controlled by the hole size, position accuracy, and surface roughness. There are many processing contents of the super long arm (pipe), including hole system, plane, and threaded hole. In the process of machining, the tool needs to be replaced constantly, and the workpiece needs to be lifted many times. The precision of each machined surface is high, and it is difficult for ordinary machine tools to ensure machining precision, quality, and production efficiency. To improve product quality, it is necessary to select a CNC machine tool with high machining accuracy, design a reasonable special fixture, develop a reasonable processing technology, and try to complete the processing task in one clamping; In addition, to avoid machining deformation, the symmetry plane should be selected as far as possible when machining the end face of each hole. CNC boring and milling machine has the characteristics of a wide processing range, excellent performance, high productivity, high precision, good rigidity, and strong universality. Therefore, selecting a CNC boring and milling machine to process the extra long arm (tube) of the excavator can solve the difficulties in the processing of the extra long arm (tube) and ensure the quality of the workpiece.
EDM, together with laser machining and electrolytic machining, is a special machining method. It is a method of machining workpieces in a certain medium through the pulse discharge between the tool electrode and the workpiece electrode to produce high-temperature metal erosion. It is also called "electric pulse machining" or "electric erosion machining". It has obvious advantages over traditional cutting methods in processing some difficult-to-cut materials, and special and complex shaped parts. Therefore, it is widely used in the manufacturing and processing fields such as molds, tools, aerospace, and so on. At present, wire cutting machines at home and abroad have accounted for more than 60% of electrical machining machines. It is very important to use EDM to machine excavator parts.
The error compensation method is to input a certain form of measurement error into the numerical control system. Its main function is to weaken or completely offset the current error. After mastering the characteristics and laws of the original error, the error mathematical model is established through analysis, statistics, and induction. Finally, the value of the artificial error and the original error are equal and the direction is opposite, to reduce the processing error to the maximum extent and improve the processing accuracy level of the workpiece. The error compensation technology not only has high efficiency but also will not cause an increase in production cost, thus achieving twice the result with half the effort.
