The external cylindrical turning process for lathe-machined parts involves rotating the workpiece via the lathe spindle while coordinating axial feed motion of the cutting tool to remove excess material from the workpiece's outer surface. This achieves the desired dimensions and surface finish. The core process comprises three stages: rough turning, semi-finish turning, and finish turning. Technical parameters and tool selection for each stage must strictly align with machining requirements. Specific process flow and technical points are as follows: I. Process Flow Rough Turning Stage Objective: Rapidly remove the majority of machining allowance to establish a foundation for subsequent operations. Parameters: Cutting depth: 2–5 mm Feed rate: 0.3–1.2 mm/rev Cutting speed: 80–

1. CNC Lathe Application for Digitalization Upgrade: Achieves single-setup machining of outer diameters, inner bores, and threads, boosting processing efficiency by 40%. Multi-axis Simultaneous Machining: Complex nuts (e.g., flanged nuts, non-standard threads) are processed using five-axis machines with precision reaching ±0.01mm. 2. Composite Machining Technology Turn-Mill Machines: Integrated turning, milling, and drilling capabilities reduce setup changes, ideal for irregular nut processing. Laser-Welded Nuts: Used for automotive lightweighting by bonding nuts to thin plates, boosting strength by 20%. 3. Intelligent Production Online Inspection System: Real-time monitoring of thread mean diameter via laser sensors enables automatic adjustment of machining parameters.

What are the fundamental processes for precision mechanical part machining? (I) Process Benchmarks Process benchmarks refer to the reference points employed during a part's machining process. Based on their function, these benchmarks can be categorized as: - Process benchmarks - Positioning benchmarks - Measurement benchmarks - Assembly benchmarks 1. Process Benchmark In a process diagram, the reference point used to determine the dimensions, shape, and position of a machined surface after processing is called the process benchmark. 2. Positioning Reference: The reference used during machining to determine the correct position of the workpiece on the machine tool or in the fixture is called the positioning reference. 3. Measurement Reference: The reference used during or after machining to measure the shape of the workpiece is called the measurement reference.

In modern automotive manufacturing systems, the stamping process plays a crucial role. As one of the core technologies for producing automotive components, stamping transforms sheet metal into various precision parts, providing a solid foundation for vehicle production. The essence of stamping lies in applying pressure to sheet metal using dies, inducing plastic deformation to achieve components with the desired shape and dimensions. While seemingly straightforward, this process involves intricate technical expertise. From the initial selection of raw materials, multiple factors must be considered, including the metal's mechanical properties, formability, and surface quality. Common stamping materials include cold-rolled steel sheets,

In the realm of industrial manufacturing, metal stamping parts serve as fundamental components widely utilized across automotive, home appliance, electronics, aerospace, and other industries. Their high-precision, high-efficiency production characteristics render them indispensable “building blocks” of modern industry. Metal stamping processes utilize molds and presses to apply pressure to sheet metal, inducing plastic deformation or separation to achieve the desired shape and dimensions. Compared to traditional machining, metal stamping production offers the following core advantages: High efficiency and low cost: Stamping enables high-speed continuous production with low per-unit costs, making it ideal for large-volume orders. High precision and