Plano Milling

Plano Milling Machine

Large-scale plano milling machine (gantry-type) for machining long, heavy workpieces and plant structural components with superior surface integrity.

Large-scale plano milling machine (gantry-type) for machining long, heavy workpieces and plant structural components

Typical Applications

  • Machining of large machine beds, base frames, and heavy structural fabrications in steel and heavy engineering plants.

  • Railway components such as switch assemblies, CMS crossings, bogie frames, bolster plates & pivots, and wagon structures.

  • Machining of large housings, and wear plates for power and cement plant equipment.

  • Shipyard machining of hull stiffeners, frames, and large welded sections.

  • Defence workshops machining large armour plates, fixtures, and structural assemblies.

Machine Description
  • • Double-column plano milling machine designed for machining large, flat surfaces on long or heavy workpieces.
  • • Defined by the machining envelope rather than fixed models, with table length, width, and working height configured to suit the component geometry and workshop constraints.
  • • Rigid bed, columns, and cross-rail structure engineered to maintain surface flatness and alignment over long table travels.
  • • Configurable milling heads (vertical and/or side-mounted) to support sustained material removal across wide surfaces.
  • • Suited to heavy duty manufacturing and large fabrication workshops where surface integrity over large spans is critical.

Technical Specifications

Indicative – machines are engineered to requirement.

Parameter Standard Configuration Extra-Large Configuration
Table Width 1000 – 1500 mm 2000 – 2500 mm
Table Length 2500 – 6000 mm 7000 – 13000+ mm
Distance Between Columns 1200 – 2000 mm 2500 – 4000 mm
Height Under Cross Rail 1000 – 1200 mm 1500 – 2000 mm
Table Drive System VFD AC Drive with Lead Screw or Ball Screw Rack & Helical Pinion Drive
Guideway System V & Flat V & Flat / Box-Type U-V
Milling Head Arrangement Single Vertical Head Vertical + Side / Multiple Heads
Control Conventional / CNC Conventional / CNC

Accuracy

Geometric & Functional Accuracy as per IS: 2877.

Engineering Rationale

  • Scale-dependent drive selection: Table drive mechanisms are selected based on stroke length. Ball screws are suitable for shorter travels, while rack and helical pinion drives are adopted for long strokes (typically 7 m and above) to avoid accuracy degradation associated with screw whip.
  • Structural scalability: Larger-format machines are not simple extensions of smaller designs. Column sections, cross-rails, and bed structures are reinforced proportionally to maintain alignment and surface flatness over extended spans.

Attachments & Options

  • • Multi-Head Configuration: Additional vertical or side milling heads for multi-face machining.
  • • Right Angle Attachment: Enables machining of internal or vertical faces without re-clamping.
  • • Control Options: Conventional manual control or CNC, depending on profiling requirements.
  • • Digital Read Out (DRO): Linear scales for position feedback during manual operation.

Configuration Notes

  • 1. Plano milling machines are engineered based on workpiece size, weight, and machining envelope, not supplied as fixed catalogue models.
  • 2. Configuration ranges shown are indicative and may be adapted based on load, duty cycle, and workshop layout.
  • 3. Accuracy performance is governed by machine size, structure, and application, and is evaluated against IS standards during acceptance.

Machine Video