Semi-Auto Double Miter Cutting Band Saws

How Do Big Stone Semi-Automatic Double Miter Band Saws (DMS Series) Optimize Heavy Structural Steel Cutting?

The Big Stone Semi-Automatic Double Miter Metal Band Saw Line (DMS Series) is engineered and manufactured directly at Big Stone's Taiwan Hsinchu plant (4,650 m² / ~50,052 sq ft). Built on high-rigidity double-column gantry architectures, the lineup encompasses standard gantry models (CF-610DM, CF-650DMS, CF-705DMS) and heavy-duty gantry models (CF-800DMS, CF-1000DMS, CF-1300DMS), with cutting capacities spanning from 400 × 600 mm to 700 × 1300 mm (15.7" × 23.6" to 27.6" × 51.2") and solid rounds up to Ø760 mm (Ø29.9"). Featuring 90°, left 45°/30°, and right 45°/30° (or +60° to -45°) precision bidirectional mitering, 0.1° digital angle readout, and full-stroke hydraulic clamping vises, the series cuts opposite angles on heavy H-beams and structural tubes with no workpiece flipping required, completely eliminating material turnover bottlenecks and shop floor hazards. Standard DMS machines include NO infeed and NO outfeed roller tables by default; modular auxiliary roller tables are available in 1m, 2m, 3m, and 5m (3.3, 6.6, 9.8, 16.4 ft) lengths (strictly non-motorized passive idle roller design). All models are CE Certified and comply with ISO 14064-1 low-carbon manufacturing benchmarks.

📍 Built at Big Stone Hsinchu Plant (4,650 m² / 50,052 sq ft) 🛡️ CE Declaration of Conformity / ISO 14064-1 📐 400mm to 1300mm (15.7" to 51.2") Width Capacity 🔄 Bidirectional 45°/30° Mitering (Zero Workpiece Flipping) 🏛️ Rigid Double-Column Linear Guideway Frame 📉 5° Blade Cant for Vibration & Tooth Shock Reduction

Live Cutting Demonstrations: CF-650DMS (Standard Gantry) & CF-1000DMS (Heavy Gantry)

HD Factory Field Tests

CF-650DMS Double-Column Saw: High-efficiency bidirectional angle cutting on structural steel

CF-1000DMS Heavy-Duty Gantry Saw: Maximum vibration damping on extra-large structural H- beams

DMS Series: 3 Core Engineering Structural & Cutting Advantages

🔄 Bidirectional Mitering with Zero Workpiece Flipping

The saw frame supports 90° straight cutting and left/right 45° and 30° swiveling. Long structural beams (up to 12m / 40 ft) advance linearly in one direction, completely eliminating material flipping delays and workplace safety risks.

📉 5° Blade Cant for Shock Reduction & Tooth Protection

The 5° forward blade tilt significantly reduces the initial contact surface when cutting through wide horizontal flanges of H-beams and square tubing, buffering downfeed shock and extending blade lifespan by over 30%.

🎯 0.1° Digital Display & Full-Stroke Hydraulic Clamping

Equipped with a high-resolution 0.1° digital angle display and hydraulic brake lock. Full-stroke hydraulic vises firmly clamp workpieces even at extreme bevel angles, preventing material slippage during heavy sawing.

Standard 4-Step Mitering Operation Workflow

Step 1: Material Infeed & Length Calibration
Advance the structural beam onto the roller table and align with the linear scale or mechanical stop at the target cut length.
Step 2: Digital Angle Positioning & Hydraulic Locking
Swivel the saw frame to the programmed miter angle (e.g. left 45° or right 30°), verify position on the 0.1° digital readout, and engage the hydraulic lock.
Step 3: Full-Stroke Hydraulic Clamping & VFD Speed Adjustment
Actuate the full-stroke hydraulic vise to secure the beam, then set the blade speed between 20–90 m/min (66–295 FPM) based on steel grade (e.g. ASTM A36, SS400).
Step 4: 5° Inclined Downfeed Cutting & Automatic Blade Elevation
Press the start button; the saw head enters the cut with a 5° shock-reducing tilt. Upon cut completion, a limit switch triggers rapid hydraulic auto-retract.

DMS Series Capacity & Engineering Specification Matrix

Official Factory Catalog SSOT Data (Metric & Imperial / HP)

Covering 400×600 mm to 700×1300 mm (15.7"×23.6" to 27.6"×51.2") cutting envelopes. All models feature rigid double-column gantry architectures, VFD blade speed control (20–90 m/min / 66–295 FPM), carbide blade guides, and hydraulic blade tensioning.
※ Roller Table Configuration: Standard DMS machines have NO infeed and NO outfeed roller tables included. Both infeed and outfeed miter auxiliary tables are optional accessories (available in 1m, 2m, 3m, 5m / 3.3, 6.6, 9.8, 16.4 ft passive idle roller designs).

Model (Structure)	90° Straight Cut (Rect. / Round)	Left Miter (45° / 30°)	Right Miter (45° / 30°)	Main Motor / Blade Size
CF-610DM (Double-Column Gantry)	400 × 600 mm (15.7" × 23.6") Ø420 mm (Ø16.5")	400 × 400 mm (45°) 400 × 225 mm (30°)	400 × 400 mm (45°) --	3.75 kW (5.0 HP) 4870 × 34 × 1.1 mm (191.7" × 1.34")
CF-650DMS (Double-Column Gantry)	440 × 650 mm (17.3" × 25.6") Ø450 mm (Ø17.7")	440 × 420 mm (45°) 340 × 270 mm (30°)	440 × 420 mm (45°) 440 × 270 mm (30°)	3.75 kW (5.0 HP) 5400 × 41 × 1.3 mm (212.6" × 1.61")
CF-705DMS (Double-Column Gantry)	440 × 700 mm (17.3" × 27.6") Ø450 mm (Ø17.7")	440 × 450 mm (45°) 440 × 270 mm (30°)	440 × 450 mm (45°) 440 × 290 mm (30°)	3.75 kW (5.0 HP) 5660 × 41 × 1.3 mm (222.8" × 1.61")
CF-800DMS (Heavy-Duty Gantry)	550 × 800 mm (21.7" × 31.5") Ø600 mm (Ø23.6")	400 × 520 mm (45°) 400 × 340 mm (30°)	550 × 520 mm (45°) --	5.5 kW (7.5 HP) 6740 × 41 × 1.3 mm (265.4" × 1.61")
CF-1000DMS (Heavy-Duty Gantry)	650 × 1000 mm (25.6" × 39.4") Ø650 mm (Ø25.6")	400 × 650 mm (45°) 400 × 420 mm (30°)	650 × 650 mm (45°) --	7.5 kW (10.0 HP) 7750 × 54 × 1.6 mm (305.1" × 2.13")
CF-1300DMS (Heavy H-Beam Gantry)	700 × 1300 mm (27.6" × 51.2") Ø760 mm (Ø29.9")	650 × 850 mm (45°) 650 × 550 mm (30°)	650 × 850 mm (45°) 650 × 550 mm (30°)	10.0 kW (15.0 HP) 9300 × 67 × 1.6 mm (366.1" × 2.64")
Roller Table Configuration	Standard DMS machines include NO infeed and NO outfeed roller tables by default. Infeed and outfeed auxiliary miter roller tables are optional accessories (modular 1m, 2m, 3m, and 5m passive idle roller designs).

DMS Series Frequently Asked Questions (FAQ)

Q: Standard Double-Column Gantry (610DM~705DMS) vs. Heavy-Duty Gantry (800DMS~1300DMS)?

The CF-610DM to CF-705DMS models utilize symmetrical dual linear guideway columns, offering compact shop footprints and responsive swiveling for standard 600mm to 700mm (23.6" to 27.6") H-beams, channel steel, and hollow profiles. The CF-800DMS to CF-1300DMS feature ultra-rigid structural gantry bases and high-torque drives to cut cross-sections up to 700×1300 mm (27.6"×51.2") (solid round up to Ø760 mm / Ø29.9"), completely dampening severe harmonics and maintaining 0.1 mm cutting squareness while maximizing wide blade life.

Q: Are infeed and outfeed roller tables included as standard equipment on DMS band saws?

No. Standard DMS machines include NO infeed and NO outfeed roller tables upon dispatch. Both infeed and outfeed miter auxiliary roller tables are optional accessories (strictly non-motorized passive idle roller design). Big Stone provides 1m, 2m, 3m, and 5m (3.3, 6.6, 9.8, 16.4 ft) modular lengths for seamless factory floor tailoring.

Q: What are the engineering benefits of the 5° blade inclination design on H-beams?

A 5° forward blade tilt substantially reduces the initial blade tooth engagement contact area across wide horizontal flanges of H-beams and square tubing. This minimizes shock load upon entry, prevents instantaneous tooth stripping, stabilizes downfeed harmonics, and prolongs band saw blade life by over 30%.

Q: What is the primary operational difference between the semi-auto DMS and full-auto CNC DMA series?

The DMS series is semi-automatic: material is pushed into position manually or via crane assistance, after which hydraulic automation handles full clamping, variable-speed sawing, and automatic blade retract. The CNC DMA series incorporates a built-in approx. 2300 mm (90.6 in.) servo powered feeder and CNC motorized angle swiveling, enabling automated, unmanned batch cutting of multiple programmed lengths and alternating angles.

Q: How does the DMS series ensure workpiece clamping stability during steep miter cuts (e.g. 60° or 30°)?

Big Stone DMS machines are equipped with full-stroke hydraulic bidirectional main vises and floating guide jaws that conform securely to profile surfaces even at extreme bevel angles. Combined with a 0.1° digital angle display and heavy-duty hydraulic brake locking, the frame and workpiece remain 100% rigid and vibration-free.

Need DMS Series Selection Support, Roller Table Layouts, or Sample Test Cuts? Direct from Big Stone Taiwan Hsinchu plant. Receive customized layout proposals and rapid factory technical consultation.

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