Detailed Explanation Of Longmen High-speed Milling And Engraving Processing
Nov 14, 2025
Let's first take a look at the video of high-speed milling and engraving processing ↓
In the field of precision manufacturing, gantry high-speed milling and fine engraving are two core processes, widely serving the production of various high-precision components. Relying on their unique technical characteristics, they play crucial roles in different processing scenarios. This article will provide a detailed analysis from three aspects: definition, core functions, and main features.
I. Gantry High-Speed Milling
1. Definition
Gantry high-speed milling is a precision mechanical processing technology based on gantry machine structure, with high-speed cutting as its core. The machine's main body adopts a symmetrical gantry frame design, featuring exceptional rigidity and stability. It is equipped with high-speed precision spindles and servo feed systems, capable of achieving efficient and high-precision cutting of various materials, including metals (such as aluminum alloys and titanium alloys) and non-metals.
2. Function
The core function of gantry high-speed milling is to efficiently remove the excess material from the workpiece and ensure processing accuracy. For the processing of large components, it effectively addresses the shortcomings of low efficiency and insufficient accuracy of ordinary milling machines. Additionally, by leveraging the characteristics of high-speed cutting, it significantly reduces the processing stress on the workpiece, lowers the probability of deformation, and lays a solid foundation for subsequent precision processing. Moreover, its gantry structure can accommodate the overall clamping and integrated processing of large workpieces, breaking through the size limitations of ordinary machines.
3. Features
a. High-speed cutting function: The spindle speed typically ranges from 8,000 to 40,000 revolutions per minute, with a maximum rapid feed speed of 30 to 60 meters per minute. This significantly shortens the rough and semi-finish machining cycles, making it particularly suitable for batch production scenarios.
b. Large-scale processing capabilities: The gantry frame span can be customized from 1 to 20 meters, enabling the processing of large components ranging from several meters to tens of meters in length. Typical applications include aerospace fuselage panels, ship deck components, and large injection mold frames, etc.
c. Multi-process integration function: Equipped with a tool magazine (usually capable of holding 20 to 80 tools) and a 3-5 axis linkage system, it can integrate multiple processes such as milling, drilling, boring, tapping, and counterboring, reducing the number of workpiece clamping times and minimizing positioning errors.
d. High-precision control function: Utilizing a closed-loop feedback system with grating rulers and a high-precision servo drive system, the positioning accuracy can reach 0.001 to 0.005mm, with a repeat positioning accuracy of ≤0.002mm, meeting the processing requirements of high-precision parts in the aviation and automotive industries.
II. Fine Engraving Processing
1. Definition
Fine engraving processing is a precision manufacturing process centered on ultra-precision engraving. It uses high-precision fine engraving machines equipped with micro engraving tools to perform micro-cutting on the surface of workpieces (with a single cutting depth as low as 0.001mm), achieving the processing of complex shapes, fine textures, or ultra-high precision dimensions. As a typical finishing process, it is mainly applied in the final shaping of small precision components, complex cavities, and surface decorative textures.
2. Function
The core function of fine engraving processing is to achieve high-precision shaping and surface refinement of workpieces. In the manufacturing process, it follows rough machining and corrects dimensional deviations through micro-cutting, ensuring that the workpiece meets the designed precision level. For complex and minute structures such as jewelry textures, precision mold cavities, and electronic component pins, it can precisely replicate detailed features while enhancing the dimensional accuracy and surface quality of the product.
3. Features
a. Ultra-precision engraving capability: The machine tool's positioning accuracy can reach 0.0005-0.001mm, and it is equipped with micro tools with diameters ranging from 0.01 to 0.1mm, enabling the processing of microstructures at the micrometer level. Typical applications include micro-holes in mold hot runners, precise gear tooth profiles, and semiconductor chip pins.
b. Complex surface machining function: Supports 3-5 axis linkage control, equipped with surface interpolation algorithm, capable of precisely machining complex surface components such as aero-engine blades, medical artificial joints, and optical lens molds.
c. Surface refinement function: By optimizing cutting parameters and tool paths, the surface roughness of the workpiece after processing can be as low as Ra0.1 - Ra0.4 μm, achieving a mirror-like finish. This eliminates the need for secondary treatments such as polishing, thereby reducing production costs.
d. Small-batch customized processing function: Relying on a convenient programming system, it can quickly switch processing plans, meeting the production demands of small batches and multiple varieties. Typical applications include customized jewelry, precision tooling fixtures, and medical implants, etc.
III. Core Differences and Applicable Scenarios Summary
The core advantages of the gantry high-speed milling machine lie in "high speed, large size, and efficient material removal", making it suitable for rough and semi-finish machining of large components. In contrast, the engraving machine is characterized by "ultra-precision, fine processing, and complex shaping", focusing on the finish machining of small precision parts and intricate detail engraving. In actual production, the two often form a collaborative processing mode of "rough machining (gantry high-speed milling) + finish machining (engraving machine)", comprehensively covering the entire process of high-precision parts manufacturing.
