DRILLSTAR CARBIDE TOOLS ARE WORKING IN MANY PLACES AROUND THE WORLD
The Deep Hole Scraping and Rolling Machine is a specialized precision machine tool designed to finish deep cylindrical holes with exceptional surface integrity and dimensional accuracy, combining the benefits of scraping and rolling processes in a single operation. This hybrid system first employs a scraping head to remove material and correct geometric imperfections, followed by a rolling head to cold-work the bore surface, creating a compressed, smooth finish that significantly enhances fatigue resistance and tribological properties. Capable of processing holes with diameters ranging from 20mm to 300mm and depths up to 10 meters, it is ideal for components where conventional honing or grinding is insufficient to meet 严苛的 surface requirements.
Engineered for heavy-duty industrial use, the machine features a rigid bed structure, high-precision spindle systems, and advanced CNC controls to ensure stable operation even in the most challenging deep-hole finishing applications. By integrating these two processes, it reduces cycle times by up to 40% compared to sequential scraping and rolling, while achieving surface roughness as low as Ra ≤0.2μm and roundness within 0.01mm.
Dual-Process Integration:
Scraping Module: Adjustable carbide scrapers remove 0.05–0.3mm of material per pass, correcting ovality and taper in pre-machined holes.
Rolling Module: Tungsten carbide or diamond-coated rollers cold-form the surface, reducing roughness by 80% and increasing surface hardness by 15–20%.
Precision Control Systems:
CNC multi-axis control (X, Z, C axes) with linear scales (resolution 0.001mm) for programmable feed rates (0.1–10 mm/rev) and depth positioning.
Laser alignment system to ensure the scraping/rolling head is concentric with the bore axis, minimizing residual stress and improving straightness (≤0.02mm/m).
Heavy-Duty Construction:
Monolithic cast iron bed with anti-vibration ribs, capable of withstanding axial forces up to 50,000N during scraping and 100,000N during rolling.
Hydrostatic guideways for smooth movement and minimal friction, ensuring consistent surface quality over long strokes.
Material Versatility:
Optimized for ferrous materials (carbon steel, alloy steel, stainless steel) and non-ferrous alloys (aluminum, titanium), with optional cooling systems for heat-sensitive materials.
Adjustable lubrication systems (oil-based or synthetic) to prevent galling during rolling of sticky materials like aluminum and copper.
Automation & Safety:
Automatic tool changer for quick switching between scraping and rolling heads, reducing setup time by 30%.
Full enclosure with chip conveyor and mist collection, compliant with ISO 14120 safety standards for operator protection.
Aerospace Hydraulic Components: Finishing deep holes in titanium alloy actuator cylinders, where low surface roughness (Ra ≤0.4μm) and high fatigue resistance are critical for leak-free operation.
Energy Sector Equipment: Processing stainless steel 17-4PH valves and inconel 625 heat exchanger tubes, ensuring dimensional accuracy for tight-fit seals in high-pressure environments.
Heavy Machinery: Refinishing hydraulic cylinders in construction equipment (e.g., excavator booms), restoring bore geometry and extending component life by 50%.
Defense Industry: Precision finishing of gun barrels and missile guidance tubes, achieving mirror-like surfaces (Ra ≤0.1μm) to optimize projectile trajectory and reduce gas leakage.
Q: How does scraping-rolling differ from traditional honing?
A: Scraping-rolling combines material removal (scraping) with surface densification (rolling) in one pass, achieving better surface hardness and faster cycle times than honing, which relies solely on abrasive removal.
Q: What is the minimum hole diameter this machine can process?
A: Standard models start at 20mm, with specialized micro-models available for 10–20mm diameters using scaled-down tooling.
Q: Can it handle non-circular deep holes?
A: No, the system is optimized for cylindrical holes. For non-circular profiles, contact our engineering team for custom tooling solutions.
Q: How often should the rolling rollers be replaced?
A: Roller life depends on material and feed rate, but typical replacement intervals are 500–1,000 meters of rolling for steel and 2,000+ meters for aluminum. Regular visual inspection for surface wear is recommended.
The Deep Hole Scraping and Rolling Machine is a specialized precision machine tool designed to finish deep cylindrical holes with exceptional surface integrity and dimensional accuracy, combining the benefits of scraping and rolling processes in a single operation. This hybrid system first employs a scraping head to remove material and correct geometric imperfections, followed by a rolling head to cold-work the bore surface, creating a compressed, smooth finish that significantly enhances fatigue resistance and tribological properties. Capable of processing holes with diameters ranging from 20mm to 300mm and depths up to 10 meters, it is ideal for components where conventional honing or grinding is insufficient to meet 严苛的 surface requirements.
Engineered for heavy-duty industrial use, the machine features a rigid bed structure, high-precision spindle systems, and advanced CNC controls to ensure stable operation even in the most challenging deep-hole finishing applications. By integrating these two processes, it reduces cycle times by up to 40% compared to sequential scraping and rolling, while achieving surface roughness as low as Ra ≤0.2μm and roundness within 0.01mm.
Dual-Process Integration:
Scraping Module: Adjustable carbide scrapers remove 0.05–0.3mm of material per pass, correcting ovality and taper in pre-machined holes.
Rolling Module: Tungsten carbide or diamond-coated rollers cold-form the surface, reducing roughness by 80% and increasing surface hardness by 15–20%.
Precision Control Systems:
CNC multi-axis control (X, Z, C axes) with linear scales (resolution 0.001mm) for programmable feed rates (0.1–10 mm/rev) and depth positioning.
Laser alignment system to ensure the scraping/rolling head is concentric with the bore axis, minimizing residual stress and improving straightness (≤0.02mm/m).
Heavy-Duty Construction:
Monolithic cast iron bed with anti-vibration ribs, capable of withstanding axial forces up to 50,000N during scraping and 100,000N during rolling.
Hydrostatic guideways for smooth movement and minimal friction, ensuring consistent surface quality over long strokes.
Material Versatility:
Optimized for ferrous materials (carbon steel, alloy steel, stainless steel) and non-ferrous alloys (aluminum, titanium), with optional cooling systems for heat-sensitive materials.
Adjustable lubrication systems (oil-based or synthetic) to prevent galling during rolling of sticky materials like aluminum and copper.
Automation & Safety:
Automatic tool changer for quick switching between scraping and rolling heads, reducing setup time by 30%.
Full enclosure with chip conveyor and mist collection, compliant with ISO 14120 safety standards for operator protection.
Aerospace Hydraulic Components: Finishing deep holes in titanium alloy actuator cylinders, where low surface roughness (Ra ≤0.4μm) and high fatigue resistance are critical for leak-free operation.
Energy Sector Equipment: Processing stainless steel 17-4PH valves and inconel 625 heat exchanger tubes, ensuring dimensional accuracy for tight-fit seals in high-pressure environments.
Heavy Machinery: Refinishing hydraulic cylinders in construction equipment (e.g., excavator booms), restoring bore geometry and extending component life by 50%.
Defense Industry: Precision finishing of gun barrels and missile guidance tubes, achieving mirror-like surfaces (Ra ≤0.1μm) to optimize projectile trajectory and reduce gas leakage.
Q: How does scraping-rolling differ from traditional honing?
A: Scraping-rolling combines material removal (scraping) with surface densification (rolling) in one pass, achieving better surface hardness and faster cycle times than honing, which relies solely on abrasive removal.
Q: What is the minimum hole diameter this machine can process?
A: Standard models start at 20mm, with specialized micro-models available for 10–20mm diameters using scaled-down tooling.
Q: Can it handle non-circular deep holes?
A: No, the system is optimized for cylindrical holes. For non-circular profiles, contact our engineering team for custom tooling solutions.
Q: How often should the rolling rollers be replaced?
A: Roller life depends on material and feed rate, but typical replacement intervals are 500–1,000 meters of rolling for steel and 2,000+ meters for aluminum. Regular visual inspection for surface wear is recommended.
