Specialized machine for reaming/milling arcs

Hinge:

The term "hinge" in industrial processing has two main interpretations, referring to...Precision hole machining toolsas well asFurniture hardware accessories.

1. Machining tools: Reamer/Drill-Reamer

In precision machining, a "hinge" usually refers to a hinge that possesses...Dual function of drilling and reamingThe compound cutting tool is commonly known as a "drill reamer" or "flat-bottomed drill reamer". 

• Function integrationTraditional processes require drilling holes first, and then replacing them with a reamer for finishing; the "reamer" design allows drilling and high-precision hole wall finishing to be completed in one feed stroke.
• Rounded corner designSome high-end reamers (such as rounded corner reamers) have a special cutting tip curvature design that can reduce machining stress and improve the surface finish of the hole bottom or corner.
• Application advantages:
  • High precisionIt can simultaneously correct the dimensional accuracy, shape accuracy (roundness), and surface roughness of holes.
  • Multipurpose processingSuitable for drilling on curved and inclined surfaces, and can effectively suppress burrs.
  • Industrial ApplicationsIt is widely used in the manufacture of precision parts such as aerospace, automobiles, molds and mobile phone panels. 

2. Furniture Hardware: Arc Hinge

In the fields of interior design and hardware, "hinge" often refers to...Hinges with an arc-shaped design. 

• Application scenariosIt is often used for glass doors, shower rooms, wine cabinets, or curved cabinet doors.
• FeaturesThe design incorporates curved glass or corner structures, and commonly features 90-degree or 180-degree opening specifications. Some models also have a clamp-type design that does not require drilling. 

Summary and comparison

category	Main Definitions	Core Uses
Machining	Composite cutting tools that combine drilling and fine reaming functions	Improve hole position accuracy and surface finish, and reduce tool change time.
Hardware accessories	Hinges suitable for connecting curved door panels	Solving the opening and closing needs of curved glass or doors at special angles.

If you are looking for specific drilling machine functions, please confirm whether you mean "automated drilling equipment with reaming capabilities" or "specialized machine for machining curved parts".

Milling arc:

In machining, "arc milling" refers to...Milling circular or curved contoursThe process is different from drilling (single-point downward). Arc milling uses the side or end cutting edge of the milling cutter to cut precise arc or irregular shapes on the workpiece through the linkage displacement of the tool on the X, Y, and Z axes.

Main methods of arc milling

• Circular interpolation:
  This is the core function of a CNC milling machine: by controlling system commands (such as G02 clockwise and G03 counterclockwise), the machine tool moves two coordinate axes synchronously to outline a perfect arc path on the plane.
• Circular Ramping:
  While the tool moves in an arc, it is also slowly fed axially (Z-axis). This method is commonly used in...Enlarged holeAlternatively, creating larger circular grooves in solid materials can effectively reduce cutting resistance and improve chip removal.
• Profile milling:
  Arc-shaped machining is used to process the outer edge or inner cavity of a workpiece, and is often used to produce surgical instruments, aerospace parts or molds with complex curves. 

Specialized equipment and tools for arc milling

1. CNC milling machine/machining center:
   The most common equipment in modern industry has multi-axis linkage capability and can automatically complete milling operations of various angles and radii according to programming.
2. Ball Nose Mill:
   The cutter head is spherical or has a corner radius design, making it suitable for 3D surface finishing and enabling smoother machining of curved corners.
3. Manual milling machine with indexing head/rotary table:
   In traditional machining, a universal indexing head or a rotary table is used to manually crank the handle to rotate the workpiece and cut out the arc. 

Technology Application Trends in 2026

Entering 2026, the integration of arc milling technology and smart manufacturing will become even closer:

• AI path optimizationAI calculations automatically adjust the feed rate and cutting angle during arc milling to avoid excessive chatter or tool wear at arc corners.
• Hybrid processing applicationsIt can complete the integrated process of "drilling, milling, and chamfering" on the same machine, which is particularly suitable for high-density heat dissipation components for AI servers or precision parts processing for robots.
• Precision Medicine and AerospaceWith the increasing demand for high-precision curved surfaces, five-axis linkage arc milling has become the standard process for processing difficult-to-machine materials such as titanium alloys.

The following are various series of special machines for reaming and milling arcs: