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Metal Cutting Machine: Unveiling the Complete Manufacturing Process of a Nut

metal cutting machine
metal cutting machine

Metal cutting machines are fundamental equipment in nut production. From cutting metal bars to forming and precision finishing, every step relies on high-quality cutting technology. The main steps include:

  1. Material Preparation: Selecting carbon steel, stainless steel, or other metal bars with uniform quality and no defects;
  2. Cutting to Length: Using CNC metal cutting machines to cut the bars into blanks of appropriate length, with precision directly affecting subsequent forming;
  3. Forming Process: Cold heading or hot forging to roughly shape the nut, followed by stamping holes and chamfering;
  4. Precision Machining: CNC lathes trim the blanks to ensure precise thread fitting;
  5. Heat Treatment and Surface Finishing: Enhancing hardness and corrosion resistance;
  6. Final Inspection and Packaging.

Throughout this process, metal cutting machines ensure cutting precision and efficiency, laying the foundation for high-quality nuts.

Industrial metal raw materials come in various shapes, requiring tailored cutting methods:

Metal ShapeCharacteristicsProcessing RequirementsRecommended Cutting Equipment
Metal BarsSolid cylindrical, suitable for formingClean, flat cut ends without burrsBand saw, CNC waterjet, abrasive cutting
Metal PlatesVarious thicknesses and large areasFine contour cutting with minimal heat effectLaser cutting, waterjet, plasma cutting
Metal BlocksLarge block shapesHigh flatness, complex shape cuttingWire cutting, waterjet
Metal PipesHollow, various cross-sectionsHigh-precision bevel and hole cuttingPipe laser, rotary waterjet cutting
Irregular ShapesCastings, forgings, complex geometriesMulti-axis cutting, control thermal deformation5-axis waterjet, 3D plasma cutting systems

Choosing the right metal cutting machine improves cutting quality and preserves material performance.

Waterjet cutting uses a high-pressure stream of water mixed with abrasives to cut metal materials, offering several significant advantages. Compared to traditional laser or mechanical cutting, waterjet cutting produces no heat-affected zones, avoiding thermal deformation, cracks, and performance degradation—especially important for heat-sensitive materials. The process introduces almost no mechanical stress, greatly reducing part deformation and residual stress, thus improving precision and quality.

  • Cold cutting with no thermal distortion: Maintains the mechanical properties and microstructure of the material;
  • Material versatility: Suitable not only for metals but also composites, ceramics, glass, foam, and other heterogeneous materials;
  • High precision: Narrow kerf width and smooth edges reduce secondary processing;
  • Environmentally friendly: No harmful gases or emissions during cutting;
  • Flexible processing: Can handle a wide range of thicknesses from thin sheets to thick plates.

Traditional 2D cutting is limited to flat surfaces. The 5-axis waterjet combines multi-axis motion with cold cutting to achieve freeform 3D cutting. This breakthrough allows precise machining of complex, irregular parts, meeting modern industry demands for diverse shapes.

  • 3D Complex Surface Cutting
    The 5-axis waterjet can cut at any angle, producing bevels, slopes, and curved surfaces. It’s ideal for aerospace, automotive molds, and mechanical structural components requiring high shape accuracy.
  • Multi-layer Composite Cutting
    With coordinated Z-axis and rotary axis motion, the 5-axis waterjet cuts through stacked materials in one operation, greatly improving production efficiency.
  • Irregular Pipe and 3D Structure Processing
    The rotary axis allows pipes and cylindrical workpieces to rotate during cutting, enabling all-around holes, bevels, and complex shape cutting, suited for sophisticated components.
  • Aerospace: 3D cutting of wing skins and complex assembly parts for lightweight strength;
  • Automotive: Complex contour and multi-angle bevel cutting of engine and body parts;
  • Precision Machinery: Fine machining of molds and structural parts for improved assembly accuracy;
  • High-end Hardware: Cutting of irregular handles and layered decorative parts.

With 5-axis waterjet technology, metal processing enters a multidimensional, high-precision era, fulfilling diverse industrial needs while enhancing flexibility and efficiency.

To meet the challenges of cutting different shapes and materials, modern waterjet machines have seen multiple upgrades:

  • High-pressure pumps and increased water flow for faster thick material cutting;
  • Extended Z-axis travel to support 3D structural processing;
  • Integrated flat and rotary axis multifunctional platforms enabling 360° rotational cutting, adapting flexibly to pipes and irregular parts;
  • Intelligent control systems with automatic path planning and error compensation for improved precision and stability.

These innovations empower waterjets with greater flexibility and applicability, making them true multi-tasking tools in modern manufacturing.

Picture of Liu Haiyang

Liu Haiyang

water jet operator, 9 years work in APW, provides water jet cutting training services for glass processing industry

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