In the custom manufacturing of enclosures for automated equipment, industrial control equipment, and instruments, sheet metal bending is a core process that determines the assembly accuracy, appearance gaps, and alignment of mounting holes for the entire unit. Sheet metal bending is a plastic forming process; multiple bending operations can easily lead to cumulative errors. If process control is inadequate, defects such as angle deviations, uneven frame lengths, out-of-tolerance diagonals, and misaligned mounting holes are likely to occur. Relying on its professional Precision Sheet Metal Bending process and mature Sheet Metal Forming system, Shengpeng Precision has developed a comprehensive set of standardized tolerance control solutions for cold-rolled steel sheets, aluminum sheets, and custom stainless steel chassis enclosures. By integrating high-precision laser cutting for pre-processing and precision welding processes, we resolve bending accuracy issues at the source and ensure dimensional consistency in mass-produced sheet metal chassis enclosures. 一、Sources of Core Tolerance Deviations in Sheet Metal Bending The vast majority of cases where enclosure tolerances are exceeded are not due to errors in a single process step, but rather result from cumulative deviations across multiple processes. Conventional tolerance for a single bending operation is ±0.5° to ±1° for angle and ±0.1 mm to ±0.3 mm for dimensions. After a standard enclosure undergoes 4 to 8 bending operations, the cumulative deviation can easily exceed 1 mm, resulting in excessive gaps in the frame joints, misalignment of door locks, and assembly interference with internal sheet metal brackets. At

In overseas OEM non-standard precision parts customization, the choice of surface treatment directly determines the product's lifespan, appearance quality, and procurement cost. Many procurements result in after-sales problems such as rust, plating peeling, appearance defects, and tolerance exceeding limits due to improper process matching, increasing rework and logistics costs. Shengpeng Precision has been deeply involved in foreign trade precision machining for many years. Relying on a comprehensive CNC Milling Service system, coupled with mature Turning Services, Custom 3D Printing rapid prototyping, and Aluminum Sand Casting blank forming capacity, we provide global customers with precise and cost-effective surface treatment solutions, solving the post-processing selection problems for various CNC parts. 一、Four Mainstream Surface Treatment Procurement and Positioning 1. Anodizing: The first choice for aluminum parts' appearance and corrosion protection. Suitable for all aluminum alloy structural and appearance parts, it offers rich colors, does not peel, and has strong weather resistance. It is the mainstream choice for export parts in new energy and automation equipment, with extremely high cost-effectiveness in mass production.   2. Sandblasting: A universal, low-cost finishing process suitable for all-metal parts. It quickly covers machined textures, creating a uniform matte finish. Ideal for prototype displays, equipment housings, and non-precision mating parts. It can be used in conjunction with subsequent coloring and coating.   3. Electroplating: A high-performance electrical and wear-resistant process, emphasizing con

In industrial new product R&D, equipment modification, and structural iteration scenarios, small-batch CNC prototyping is a core step in verifying product structure, assembly accuracy, and process feasibility. Standardized prototyping processes effectively avoid problems such as drawing defects, machining deformation, dimensional deviations, and appearance flaws, significantly reducing the risk of scrapping new products during mass production. Shengpeng Precision possesses a mature non-standard precision customization system, relying on professional High Precision CNC Milling and Precision CNC Turning Services to quickly complete the prototyping production of various irregularly shaped, high-precision structural parts. For complex structure R&D verification, we offer a 3D Printing Service for rapid prototyping, verifying assembly logic in advance. Combined with Aluminum Die Casting pre-forming technology, this lays a mature process foundation for subsequent mass production. 一、CAD Drawing Review and DFM Process Assessment After the customer provides drawings in STEP, IGS, CAD, and other formats, the engineering team conducts a DFM process review immediately. Key parameters such as dimensional tolerances, geometric tolerances, chamfers, wall thickness, hole fits, and surface treatment allowances are carefully checked. Difficult-to-machine structures, easily deformable locations, and unreasonable tolerance designs are highlighted, and optimization solutions are provided simultaneously. For issues such as design interference, structural weaknesses, and infeasibility of processes in R&D drawings, we provide free assistance to clients in optimizing structures, impro

In non-standard precision OEM custom manufacturing, CNC turning and CNC milling are the two core mainstream processes; the vast majority of mechanical parts, automation components, and precision hardware parts are produced using these two methods. Many procurement professionals and engineers often confuse the boundaries of applicability between the two processes, leading to inflated manufacturing quotes, extended lead times, and wasteful redundancy in manufacturing processes. Drawing on years of experience in non-standard customization and leveraging its professional Precision CNC Turning Services and High-Precision CNC Milling capabilities, Shengpeng Precision clearly distinguishes the machining principles, structural suitability, batch production advantages, and cost logic of these two processes, helping companies make precise process selections and optimize production costs. At the same time, by combining these with our proven capabilities in the finishing of aluminum die-cast blanks and rapid prototyping via 3D printing services, we achieve optimized multi-process integration to further enhance cost-effectiveness.   一、Key Differences in the Core Machining Principles of CNC Turning and CNC Milling CNC turning operates on the principle of “rotating workpiece, stationary tool feed,” where the machine’s spindle drives the material to rotate at high speed while the tool moves in a linear or simple trajectory. This method is suitable for regular rotational structures, featuring simple machining paths, extremely high efficiency, and stable repeatability. In contrast, CNC milling operates on the principle of “high-spee

In overseas high-end OEM precision parts customization scenarios, medical equipment, optical instruments, and semiconductor automation equipment have increasingly stringent tolerance requirements. 0.001mm micron-level precision has become a key to the core competitiveness of high-end products. Most ordinary CNC machining processes cannot avoid dimensional deviations caused by positioning errors, thermal deformation, and tool wear, easily leading to problems such as assembly jamming, substandard accuracy, and poor batch consistency. Shengpeng Precision has deep expertise in the field of ultra-high precision customized machining, relying on a mature professional CNC Milling Service system, focusing on 0.001mm ultra-high tolerance five-axis linkage machining, providing highly stable precision parts customization solutions for global customers.   For precision parts with rapid product development iterations and complex structures, we support Metal 3D Printing Service for rapid prototyping, quickly completing structural verification and assembly testing, shortening the new product development cycle. For large-volume lightweight aluminum precision parts, we can combine it with Aluminum Die Casting blank forming technology to quickly form the blank first, and then use five-axis precision milling to achieve micron-level precision. This ensures ultra-high precision while effectively controlling mass production costs, balancing quality and cost-effectiveness. Years of mature Metal Milling Service precision machining experience allow us to adapt to the ultra-high precision machining needs of all materials, including aluminum, stainless steel, copper, titanium alloys, and engineering plastics.

In the field of non-standard precision OEM parts processing, aluminum alloys, stainless steel, copper, and engineering plastics are the four core raw materials for manufacturing CNC turned parts and irregularly shaped milled structural parts. Different materials exhibit significant differences in cutting difficulty, load-bearing strength, corrosion resistance, and processing costs. Furthermore, the surface treatment processes suitable for each material are completely distinct. Incorrect material selection can easily lead to production problems such as insufficient part strength, rust susceptibility, appearance defects, and budget overruns. Shengpeng Precision, relying on its mature and stable Metal Milling Service with full-category milling capabilities, and complemented by Aluminum Die Casting blank forming and 3D Printing Service for rapid prototyping, comprehensively analyzes the four mainstream materials from four dimensions: material properties, processing characteristics, suitable surface treatments, and applicable working conditions, facilitating rapid material selection for R&D engineers and foreign trade procurement.   一、Detailed Explanation of Core Processing Characteristics of Four Materials   1. Aluminum Alloy (6061/6063/7075)   Processing Characteristics: Lightweight, low cutting resistance, extremely low tool wear, capable of high-speed machining, high production efficiency; 7075 aerospace aluminum has high tensile strength, suitable for heavy-duty structural components; short plates are relatively so

In the non-standard OEM metal customization industry, electroplating is the only surface treatment process that can simultaneously achieve protection, functionality, and decoration. Addressing industry pain points such as the tendency of carbon steel to rust, aluminum to oxidize, copper to discolor, and insufficient wear resistance of precision parts, electroplating can quickly compensate for the shortcomings of the substrate through customized plating solutions. It is the mainstream customization process for industrial fasteners, transmission components, electrical control hardware, and decorative parts. Our factory specializes in one-stop precision parts OEM services, relying on professional precision machining systems such as Precision Milling Services and Precision Cnc Turning Services, coupled with mature aluminum die casting production capacity. We can undertake electroplating customization orders for all categories and specifications, suitable for both small-batch sampling and large-scale export production.   一、Core Characteristics of Electroplating Process Electroplating is an electrochemical external plating process, distinct from physical polishing and chemical film formation processes. Its core characteristics are the ability to add functions, customize thickness, and adapt to multiple materials. It requires no alteration to the workpiece's substrate structure and mechanical properties; simply by depositing a metal coating on the surface, it can endow ordinary metal parts with special properties such as corrosion resistance, high wear resistance, high conductivity, high temperature resistance, and aesthetic appeal. It is the most flexible and widely adaptable surface treatment in ind

In the field of custom OEM manufacturing for non-standard metal components, sandblasting is a widely utilized physical process for both surface pre-treatment and aesthetic enhancement. After undergoing precision machining, die casting, or sheet metal forming, the vast majority of precision mechanical parts retain residual tool marks, oxide scale, oil stains, and joint seams on their surfaces; sandblasting serves as the most cost-effective and versatile solution for rectifying these imperfections. Whether applied to precision block-style structural components produced via Precision Milling Services, rotational parts manufactured through Precision CNC Turning Services, or various raw aluminum alloy castings, sandblasting is essential for optimizing surface conditions—making it an indispensable standard process for OEM parts destined for export.   一、What is the Sandblasting Process? Sandblasting is a purely physical surface treatment process that utilizes no chemical agents; consequently, it does not corrode the metal substrate or alter its inherent properties. The equipment employs compressed air as a propellant to blast eco-friendly abrasive media—of varying grit sizes—at high velocity onto the workpiece surface. Through the continuous impact and friction of these abrasive particles, the process rapidly removes surface oxide layers, machining marks, minute burrs, rust, and oil stains. Simultaneously, it creates a uniform, fine matte finish on the metal surface, thereby standardizing the overall texture. It is a multifunctional process that effectively combines defect remediation, aesthetic enhancement, and surface preparation for subsequent treatments.

In the custom manufacturing of a comprehensive range of non-standard OEM components, surface treatment serves as the critical link connecting precision machining with final product delivery. All CNC parts—whether formed through precision milling or CNC turning—as well as raw aluminum alloy die-castings, require the application of appropriate surface treatment processes to mitigate inherent metal shortcomings such as susceptibility to oxidation, wear, and surface roughness. The industry broadly categorizes surface treatment processes into four major groups: Physical Modification, Chemical Film Formation, Coating & Plating, and Vacuum Deposition. This article provides a systematic analysis across five key dimensions—process principles, core advantages, limitations, compatible materials, and OEM applications—to facilitate rapid and informed process selection.   一、Physical Surface Modification (No Chemical Additives; Mechanical Enhancement)   1、Sandblasting: Utilizing compressed air as a propellant, abrasive media are projected at high velocity onto the workpiece surface to remove oxide scale, machining marks, and burrs.   Advantages: Zero dimensional loss (does not compromise precision tolerances); compatible with all metals; enhances coating adhesion; high efficiency and low cost.    Limitations: Provides no inherent rust resistance or wear resistance; thin-walled parts ar

 With the advancement of Industry 4.0, laser cutting technology has become one of the core processes in fields such as sheet metal fabrication and precision component machining, thanks to its high precision, high efficiency, and non-contact processing advantages. This article provides a systematic analysis of the principles, applicable materials, and design specifications of laser cutting, while comparing it with traditional machining methods such as CNC milling to offer practical guidance.     一、Definition and Core Principles of Laser Cutting Laser cutting is a thermal cutting process that utilizes a high-power, high-density laser beam to irradiate the surface of metal sheets, causing the material to instantly melt, vaporize, or be blown away by a high-energy gas stream, thereby achieving material separation. Unlike traditional mechanical contact cutting, laser cutting is a non-contact process. The process involves no tool wear, no mechanical compression, and no workpiece deformation, allowing the original properties and surface quality of the sheet metal to be preserved to the greatest extent possible. When combined with automatic programming via a CNC system, the equipment can precisely cut any complex shape according to the trajectory specified in the drawings. Whether it’s straight lines, arcs, irregular holes, or openwork patterns, all can be formed in a single pass, making it a core foundational process for modern precision sheet metal fabrication. 二、Classification of Mainstream Laser Cutting Processes Based on differences in material thickness, material type, and processing results, laser cutting is primarily

In the fields of sheet metal fabrication, hardware manufacturing, and precision component production, metal stamping and metal punching are two core manufacturing processes. Many companies tend to confuse the two in actual production, but in reality, they are interrelated processes—one encompassing the other—with significant differences in application scenarios, cost control, and production efficiency. Selecting the appropriate process and integrating it with complementary techniques such as sheet metal bending and laser cutting can significantly enhance production efficiency. This article will explain the differences between punching and stamping and provide clear guidance on process selection. We will delve into their respective working principles, suitable materials, required equipment, and cost structures to help you make the most appropriate choice for different production scenarios.   一、Analysis of Process Essentials   1. What is Metal Stamping?    Metal stamping is a cold working process that uses presses and specialized dies to apply pressure to metal sheets, causing them to undergo plastic deformation or separation to produce the desired parts. It serves as the foundational core of sheet metal fabrication and constitutes a “family of processes” encompassing multiple operations. As a comprehensive processing technology, metal stamping encompasses multiple specialized processes, enabling one-stop part forming: from basic separation processes such as blanking, trimming, and metal punching (as a sub-branch), to plastic forming processes such as drawing, flanging, embossing, and sheet metal bending. Its core advantage lies in i

As the manufacturing industry accelerates its evolution toward high-end and intelligent production, metal forming and precision machining technologies are becoming key elements in helping companies build core competitiveness. Among these, die casting and sand casting—two fundamental metal forming processes—are often confused by industry professionals. In reality, there are significant differences between the two in terms of principles, advantages and disadvantages, and application scenarios. At the same time, precision machining services such as CNC milling, laser cutting, and sheet metal welding are deeply integrating with forming processes, jointly driving improvements in quality and efficiency across the industry. This article will systematically analyze the core differences between die casting and casting, and, in conjunction with mainstream precision machining services, provide a reference for enterprises’ production decisions.   一、Analysis of Core Concepts: Definitions of Die Casting and Casting   (1) Casting Casting is a traditional and widely used metal forming process. Its core principle involves pouring molten metal (such as iron, steel, aluminum, or copper) into a pre-prepared mold (such as a sand mold or metal mold). Once the metal cools and solidifies, a casting with specific shapes, dimensions, and properties is obtained. As the most fundamental metal forming method, casting encompasses various subcategories such as sand casting, investment casting, and centrifugal casting. It is suitable for the production of a wide range of metal materials and complex structural components, making it an indispensable foundational process in the manufacturing industry.

There are various manufacturing processes for metal and alloy products, and the choice depends on material properties and processing requirements. Among these, the relative merits of casting and machining are a frequent point of debate among engineers and manufacturers: machining shapes materials by removing material, while casting relies on pouring molten metal into a mold to solidify and form the shape. This article will discuss casting and machining in detail, including their principles of operation, advantages, disadvantages, and key differences.   一、What Is Casting? Casting is a process in which metal raw materials are melted at high temperatures into a liquid state, poured into a pre-prepared mold cavity, and allowed to cool and solidify naturally. The mold is then opened to reveal a metal part or blank with the desired shape. As a representative near-net-shape process, casting enables the production of complex structures with minimal machining, resulting in significantly higher material utilization than conventional machining.  

The precision manufacturing industry is entering a new phase of high-quality development. As a core metal forming process, die casting is widely used in various fields—including automotive, aerospace, and electronics—thanks to its outstanding advantages of high efficiency and precision. Working in tandem with complementary services such as CNC machining, laser cutting, and sheet metal forming, it is driving the upgrading of the manufacturing industry chain. This article systematically outlines the key aspects of die casting technology while analyzing the current state of related processing services, with the aim of providing a reference for industry professionals.   一、What Is Die Casting?   Die casting is an advanced metal casting process. Its core principle involves rapidly injecting molten metal (such as aluminum, zinc, or magnesium alloys) into precision molds under high pressure. After rapid cooling and solidification, this process produces metal parts with complex geometries, high dimensional accuracy, and excellent surface finish. Compared to traditional casting processes, die casting typically eliminates the need for complex post-processing and can directly produce finished or semi-finished products that meet precision requirements, making it the preferred solution for high-volume metal part manufacturing. Among these, aluminum die casting (Aluminum Die Casting), with its lightweight and corrosion-resistant properties, has become one of the most widely used types of die casting today.     二、The Working Principle of Die Casting: High-Pressure Molding, Efficient Mass Production

As modern manufacturing undergoes a transformation toward intelligent and diversified production, CNC machining and 3D printing—as two core manufacturing processes—are widely used in various fields such as aerospace, automotive manufacturing, precision instruments, and sheet metal fabrication. With their distinct technical principles and process advantages, both have become key drivers supporting product R&D and mass production. Many companies face a dilemma when planning their production layouts: which process is better suited to their specific needs?   一、What is CNC Machining? CNC machining is a precision processing technology based on the principle of “subtractive manufacturing.” Through computer numerical control, it manipulates cutting tools such as milling cutters and turning tools to cut, drill, and grind raw materials like metal and plastic, gradually removing excess material to ultimately produce a finished product that meets design specifications. Its core advantages lie in high precision and repeatability, enabling the consistent production of parts with strict tolerances. Common sub-services include CNC milling and CNC turning, which are widely used in applications such as precision instrument components and core automotive parts.

As the manufacturing industry accelerates its transformation toward high precision, high efficiency, and intelligent operations, CNC (Computer Numerical Control) machining services have become a key technological pillar for enhancing product quality and machining precision. Whether in aerospace, medical devices, automotive electronics, or precision instruments, high-quality CNC machining services are continuously driving the upgrading of industry standards. This article will provide an in-depth analysis of the core advantages of CNC machining services in improving product quality and precision from three perspectives.   一、The Advantages of CNC Machining Services in Enhancing Product Quality In modern manufacturing, product quality directly impacts safety, durability, and market competitiveness. Leveraging automation, digitalization, and high repeatability, CNC machining services have become a core means of ensuring quality.   First, CNC replaces traditional machining—which relies on manual expertise—with programmatic control. All toolpaths and parameters (such as spindle speed, feed rate, and cutting depth) are preset by CAM software and executed with precision, significantly reducing human error. This ensures high consistency in dimensions, geometric tolerances, and surface quality across batch production, making it particularly suitable for sectors with stringent stability requirement

As modern manufacturing demands increasingly higher standards for product aesthetics, durability, and precision, surface treatment technologies play a crucial role in processing both plastic and metal components. Whether it's complex structural parts machined via CNC milling or industrial enclosures formed through sheet metal welding, the distinct properties of different substrates dictate vastly different surface treatment processes. This article will delve into a comparative analysis of plastic and metal surface treatment methods while examining current technological trends in precision manufacturing.   一、Fundamental Differences Between Plastics and Metals Plastic Surface Treatment Plastic parts are typically formed through injection molding or precision milling services. Surface treatment primarily aims to conceal injection molding defects, enhance wear resistance, and achieve rich color effects. Common processes include electroplating. Due to plastics' poor heat resistance, temperatures must be strictly controlled during treatment to prevent deformation.  

With the rapid development of high-end manufacturing, new energy vehicles, aerospace, and consumer electronics industries, higher demands are placed on the precision, strength, and surface properties of metal parts. After completing foundational machining processes like CNC Milling, CNC Turning, or Laser Cutting, surface treatment becomes the critical step determining a part's final performance. Among the options, anodizing and electroplating are the two most common methods. How should one choose? This article analyzes the decision from multiple dimensions and, combined with current trends in precision machining services, provides reference for the industry.   一、Anodizing vs. Electroplating: Core Differences 1. Distinct Process Principles Anodizing: Primarily applied to aluminum and its alloys, this process uses an electric current in an electrolyte to form a dense oxide layer on the metal surface. This layer enhances corrosion resistance, wear resistance, and supports dyeing.

In the field of metal processing, material selection directly determines product performance, cost, and application scenarios. For a long time, steel has dominated due to its high strength. However, with industries like aerospace, new energy vehicles, and consumer electronics pursuing lightweight solutions and machining efficiency, aluminum is rising with strong momentum. This article delves into the core advantages of aluminum over steel in CNC machining:   一、Aluminum's Inherent Density Advantage In an era prioritizing energy efficiency and endurance, weight is a critical metric. Aluminum's density is approximately 2.7 g/cm³, roughly one-third that of steel (about 7.8 g/cm³). This means components made from aluminum can weigh over 60% less than their steel counterparts with identical structural designs. For aerospace and automotive manufacturing, this weight reduction directly translates to lower fuel consumption or extended range. In practical applications like Precision Milling Services, lighter materials also mean reduced machine tool loads, more stable machining processes, and easier achievement of high-precision surface finishes.   二、Faster Speeds and Reduced Tool Wea

With the rapid evolution of the precision machining industry, surface treatment technology has garnered significant market attention as a core process for enhancing product performance and extending service life. Oxidation powder coating, leveraging its environmental friendliness, high efficiency, and robust protective properties, has deeply integrated with mainstream machining services such as CNC milling, laser cutting, and CNC turning. Widely applied across aerospace, automotive manufacturing, and home appliance production, it has become a vital driver for the transformation and upgrading of the manufacturing sector.   一、What is Anodizing and Powder Coating Surface Treatment? Anodizing and powder coating is a composite surface treatment process. It first generates a dense oxide film on the metal workpiece surface through chemical/electrochemical methods. Then, powder coating is uniformly applied to the surface via electrostatic adhesion and cured at high temperatures to form a composite coating. This process achieves dual effects: “anodic protection (corrosion resistance, wear resistance) + powder coating decoration (aesthetics, additional protection).”

As demands for product aesthetics and performance continue to rise in high-end manufacturing, consumer electronics, automotive components, and other sectors, glossy black surface treatment technology is emerging as a pivotal driver for manufacturing upgrades due to its distinctive visual appeal and process characteristics. This technology integrates deeply with mainstream precision machining processes such as CNC milling, laser cutting services, and sheet metal bending, collectively propelling the industry toward high-end, precision-oriented transformation and injecting sustained new momentum into its development.   一、What is Glossy Black Surface Treatment? Glossy black surface treatment fundamentally involves creating a smooth, uniform, mirror-like black coating or conversion film on workpiece surfaces through physical, chemical, or composite processes. Its core distinction from standard matte black finishes lies in delivering a “deeply black yet translucent” visual effect, offering two key benefits:

Against the backdrop of accelerated precision and automation in global high-end manufacturing, sheet metal fabrication and CNC machining—as two cornerstone technologies for metal component production—continue to drive innovation across automotive, electronics, aerospace, and energy industries. Though often mentioned together, they exhibit fundamental differences in process principles, application scenarios, and technical approaches. This article systematically outlines their distinctions and provides an in-depth overview of current mainstream metal processing service types.   一、Process Essence: Forming vs. Cutting Sheet metal fabrication uses thin metal sheets (typically 0.5–6mm thick) as raw material. It achieves part shaping through non-cutting methods such as shearing, punching, bending, and welding, with its core principle being “forming.” Its advantages include high efficiency, low cost, and suitability for mass-producing structural components like cabinets, enclosures, and brackets. CNC machining, however, is a subtractive manufacturing process. It employs high-precision machine tools to perform three-dimensional cutting on metal blocks, bars, or thick plates, achieving complex geometries by removing material. Emphasizing “precision” and “complexity,” it is widely used in aerospace, medical devices, precision in

In the field of metal processing and manufacturing, copper alloys have long held a significant position due to their excellent electrical conductivity, corrosion resistance, and machinability. Among these, brass and bronze are the two most frequently mentioned materials. Many assume they are simply “one yellow, one blue,” but in actual engineering applications, their compositions, mechanical properties, processing difficulties, and even costs differ greatly. Choosing the wrong material can result in increased tool wear and reduced production efficiency at best, and at worst, lead to premature part failure or even safety incidents.   一、Different Chemical Compositions The core distinction between brass and bronze lies in their base alloy elements, which determine their fundamental performance differences. For example: Brass is copper-based with zinc as the primary additive, offering superior ductility and plasticity for easier machining and forming;

In sectors with urgent lightweighting demands—such as aerospace and new energy vehicles—aluminum alloys have become critical materials. However, their high-precision CNC milling processes present significant challenges, often leading to reduced yield rates and uncontrolled costs. Industry experts note this is a systemic engineering endeavor involving materials, processes, and equipment. The core challenges and cutting-edge countermeasures are outlined below: 1. Thermal Deformation Challenge Manifestation: Significant localized temperature rise during high-speed cutting causes warping in thin-walled, large-surface workpieces. Strategy: Implement minimum quantity lubrication (MQL) or low-temperature cooling; optimize tool paths by adopting layered symmetrical machining; incorporate thermal compensation algorithms.   2. Residual Stress Release Challenge Manifestation: Internal stresses redistribute after rough machining, causing springback deformation upon clamping removal. Strategy: Implement a “rough machining → stress aging → finish machining” process sequence; apply vibration stress aging technology; utilize finite element simulation to predict and optimize machining order.   3. Tool Clogging and Build-Up Edge Challenge Manifestation: Aluminum chips readily adhere to tools, causing surface roughness and dimensional fluctuations. Strategy: Select low-friction tools like diamond-coated inserts; employ high-speed, high-feed shear-type cutting; strictly monitor tool life.   4. Insufficient Rigidi