A tilting, T-slotted accessory used on milling machines to set the workpiece at a desired inclination. The machine provides X–Y motion; the table supplies the tilt (θ) about one axis.

Main components

• T-slotted top table: For clamping the work or a vise. Ground cast iron (Meehanite/HT250) surfaces.
• Trunnions/side cheeks (semi-circular supports): Let the top tilt about an axis. Carry an angle scale.
• Fine-adjust mechanism: Lever/handwheel or a worm–sector gear for precise angle setting.
• Locks/clamps: Rigidly hold the set angle.
• Base: Bolts to the machine table via T-nuts.

Working principle & accuracy

1. Tram the table parallel to the machine table at 0°.
2. Set the required angle using the scale/vernier or worm drive.
3. Tighten the locks. During cutting, keep the load close to the trunnion centerline to minimize deflection.

Typical technical figures (vary by model):

• Tilt range: ±45° or ±90°
• Scale resolution: 1° (vernier types 5′–10′)
• Parallelism/squareness at 0°: 0.02–0.05 mm per 100 mm
• Load capacity: ~30–150 kg for small tables; higher for larger models
• T-slot sizes: 12/14/16 mm; spacing per manufacturer

When to use it

• Machining inclined faces, chamfers, angled pockets/slots
• Compound-angle work (combine head swivel + table tilt)
• Keyway/slotting, pre-grind rough angle creation, general fixturing

For very high angular accuracy use a sine table; for azimuthal rotation use a rotary table. The adjustable worktable excels at single-axis tilt.

Selection criteria (good to list in a sale/ad)

• Table size (e.g., 150×200, 200×300 mm) and T-slot width
• Tilt range & resolution (vernier/worm present?)
• Angular accuracy (at 0° and at full tilt)
• Load capacity & net weight
• Material/surface finish (Meehanite, ground ways)
• Locking system (dual side clamps, central lock) and backlash control
• Base footprint & compatibility with your machine’s T-slots

Setup & alignment (quick procedure)

1. Bolt the base to the machine with T-bolts; tram the top at 0° to the X-axis using a ground bar or DTI.
2. Mount the vise/work so the center of mass is near the trunnion.
3. Set the angle with the vernier or worm; tighten both locks evenly.
4. Take a light first pass; increase feeds if no chatter. Use auxiliary supports if needed.

Maintenance & safety

• Keep slides/gears free of chips; lubricate regularly.
• Do not adjust angle under heavy load; support the work first.
• If locks are loose, the angle will drift; verify periodically with a DTI or angle gauge.

Summary:
An Adjustable Angle (Tilting) Milling Worktable adds a manual tilt axis to a 3-axis mill, enabling fast, repeatable inclined machining. Proper choice centers on table size, angular accuracy, and locking rigidity.

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