CNC Stone Molding Cutting Machine

Product Overview & Equipment Positioning

The CNC Stone Molding Cutting Machine (Model DNFX-3000), engineered by Fujian Province Kaida Stone Machinery Co., Ltd., is an industrial-grade, heavy-duty CNC profiling and line-cutting system designed for high-precision architectural stone fabrication. Specially built for processing complex stone moldings, decorative cornices, door/window frames, column capitals, balustrades, and tombstone profiles, the DNFX-3000 combines a rigid double-beam structure with 3-axis CNC digital control.

Unlike conventional manual profiling machines or lightweight single-beam line cutters, the DNFX-3000 utilizes a heavy-duty steel structure capable of supporting workpieces exceeding 2,000 kg (2+ tons) without structural distortion or chatter. Equipped with a 22 kW constant-power spindle motor, 35# HGK35 linear guide rails, and 2.0 kW high-torque servo drives, this machine delivers rapid processing speeds up to 15 m/min while maintaining strict geometric tolerances and smooth surface finishes across marble, granite, bluestone, and engineered quartz.

Technical Specifications Table

Core Mechanical Features & Structural Engineering

1. Ultra-Rigid Steel Double-Beam Frame Architecture

The DNFX-3000 is built around a heavy-duty steel gantry frame with dual crossbeams designed to absorb heavy mechanical forces during deep profile milling and multi-pass blade shaping. The structure undergoes stress-relieving heat treatment to guarantee long-term dimensional stability, preventing bed deformation even under continuous daily workloads exceeding 2,000 kg.

2. 22 kW High-Torque Constant Power Spindle Assembly

Powering the primary cutting head is a heavy-duty 22 kW constant-power motor rotating at 2,000 rpm. This motor maintains maximum torque throughout varying material densities-from soft Italian marbles to dense, abrasive granites. Supporting blade diameters from Φ350 mm up to Φ600 mm, the spindle cuts deep relief profiles in a single pass or incremental multi-pass sequences with minimal tool wear.

3. Precision Linear Guides & Helical Motion System

• Linear Guide Rails: Fitted with heavy-duty HGK35 (35#) linear guides on main movement axes, offering superior load distribution, low friction coefficients, and precise linear movement.
• X/Y Helical Rack & Pinion: Motion across the 1800 × 3500 mm travel envelope is driven by precision helical gears and ground racks, delivering high linear accuracy and high-speed positioning up to 15 m/min.
• Z-Axis Vertical Feed: Driven by a high-precision ground ball screw with anti-backlash nut assembly, ensuring micro-step depth accuracy across the 350 mm vertical stroke.

4. 2.9 kW High-Performance Servo Drive Package

All motion axes are controlled by 2.0 kW AC servo motors operating in a closed-loop system. The high dynamic responsiveness of these servo drives eliminates position loss, acceleration lag, and surface stepping, producing silky-smooth curved profiles and sharp architectural reveals.

CNC Intelligence & Workflow Automation

Direct CAD Profile Import (.DXF)

Operators do not need complex G-code programming expertise. Architectural molding profiles designed in standard CAD software (AutoCAD, Rhinoceros, SolidWorks) can be imported directly into the machine's CNC interface via USB or network interface. The system automatically calculates blade toolpaths, roughing passes, and finishing speeds based on selected profile geometry.

Intelligent Power-Off Memory & Tool Breakage Recovery

• Power Interrupt Protection: In the event of a factory power outage, the CNC controller saves the exact X/Y/Z coordinate state to non-volatile memory. Upon power restoration, processing resumes seamlessly from the exact break point without ruining the workpiece.
• Tool Breakage Resumption: If a diamond blade or cutter breaks during operation, the system allows the operator to replace the tool, recalibrate zero, and resume cutting without restarting the entire program cycle.

Processing Capabilities & Material Versatility

Processing Specifications

• Envelope Size: 1,800 mm length × 3,500 mm width × 350 mm height.
• Profile Depths: Capable of stepping down up to 350 mm in depth to sculpt deep cornices, Roman column capitals, and molded window sills.
• Feed Speeds: Variable cutting feed rates adjusted dynamically based on stone hardness, reaching vector traverse speeds up to 15 m/min.

Applicable Stone & Material Range

• Natural Marble & Limestone: Carrara Marble, Crema Marfil, Bluestone, Travertine, Onyx, Shoushan Stone.
• Hard Natural Granite: Absolute Black, G654, G603, Imperial Red, Baltic Brown.
• Engineered & Specialty Materials: Quartz Slabs, Nano-Crystallized Glass, Artificial Stone, Jade, Agate, Inkstone, as well as non-ferrous architectural metals (Copper, Aluminum panels).

Application Scenarios & Architectural Finished Products

1. Exterior & Interior Architectural Moldings: Building facade cornices, waistline moldings, plinths, skirting lines, and decorative wall belts.
2. Door & Window Surround Profiles: Architraves, window sills, crowned pediments, and decorative entrance frames.
3. Columns, Pillars & Balustrades: Shaped caps, column bases, railing moldings, and contoured baluster lines.
4. Tombstone & Monument Inlays: Beveled monument borders, carved headstone frames, and detailed memorial moldings.

Maintenance Protocols & Quality Assurance

• Lubrication Maintenance: The HGK35 guide rails and ball screws feature centralized grease lubrication ports. Daily check of oil levels prevents dust ingress and wear.
• Water Cooling & Dust Management: Dual coolant spray nozzles direct continuous water flow to the cutting zone, extending diamond tool life and washing away stone slurry to protect linear rails.
• Quality Control & Calibration: Every DNFX-3000 unit undergoes strict laser interferometer alignment, dynamic load testing, and 48-hour continuous trial cutting at Fujian Kaida's manufacturing facility before shipment.

Why Choose Fujian Kaida Stone Machinery?

• 20+ Years of Manufacturing Expertise: Based in Shuitou Town, Nan'an City-China's global stone processing hub-Fujian Kaida Stone Machinery Co., Ltd. is a leading manufacturer of bridge saws, block cutters, and CNC profiling equipment.
• International Quality Standards: Operating under ISO9001 Quality System, ISO14001 Environmental System, European CE Directives, and holding multiple national utility patents.
• Global Sales & Technical Network: Backed by over 35 domestic branches and 70 overseas service agents, providing expert layout assistance, operator training, and rapid spare parts dispatch.

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