Process benchmarks and conditions for precision machining of mechanical components

Nov 29,2021

　　The process benchmarks for precision machinery component machining include the positioning benchmark, which refers to the reference point used by the lathe or fixture during CNC turning operations. There’s also the measurement benchmark, typically denoting the dimensional or positional standards that must be adhered to during inspection. Finally, the assembly benchmark serves as the reference for determining the precise positioning of components when carrying out the assembly process.

　　Precision mechanical component manufacturing processes can be categorized into various techniques, including casting, forging, stamping, welding, heat treatment, machining, and assembly—each representing a specific stage in the CNC machining and machine assembly of an entire part. Meanwhile, ancillary processes such as cleaning, inspection, equipment maintenance, and oil sealing serve merely as supporting steps. Notably, turning methods significantly alter the surface properties of raw materials or semi-finished products, making CNC machining the primary process within the industry.

　　The process benchmarks for precision machinery component machining include the positioning基准, which refers to the reference point used by the lathe or fixture during CNC turning operations. There’s also the measurement基准, typically denoting the dimensional or positional standards that must be adhered to during inspection. Finally, the assembly基准 serves as the reference for determining the precise positioning of components when carrying out the assembly process.

　　Precision machining of mechanical components requires the production of high-quality, reliable products. To achieve this goal, staff must possess extensive experience in mechanical processing, along with solid technical skills. As everyone knows, mechanical machining is a meticulous craft—only with superior expertise can it be done right.

　　Secondly, whether the precision machining process for mechanical components adheres to standardized procedures directly determines the quality of the final product. Both production and management inherently require a flawless, well-defined workflow—after all, the process exists precisely to enable the creation of superior products. Moreover, effective communication is crucial throughout the manufacturing phase. Whether it’s about scheduling milestones or addressing potential issues, fostering open dialogue is essential. In particular, seamless communication between the machining facility and equipment manufacturers is a key prerequisite for successfully producing high-quality automated machinery parts.

　　When machining precision mechanical components, contour systems with digital program control are widely used on milling machines. These include phase systems that offer extensive process capabilities, are simple and reliable, and come at a low cost. Such systems have been adopted by many factories, particularly for controlling the machining of large, complex three-dimensional surfaces in precision mechanical parts.

　　Correctly preparing the control program is one of the key conditions for ensuring the quality of precision machined parts. For digital program-controlled phase systems, the preparation of the control program is carried out using an automated program preparation system, and the quality level largely depends on the cost of developing the control program.

　　Other sources of machining errors arise when equipment is manually controlled, including both random and systematic errors within the process system. Among all machining errors, systematic errors play the dominant role, significantly impacting the overall precision of CNC machining processes for mechanical components and leading to a range of specific CNC-related process system errors.

　　For example, backlash—having backlash is akin to the dead zone in a machine tool's transmission chain, but it doesn’t include the backlash in the reverse transmission chain or the amplification factor associated with unstable transmission.

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