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The 140-360mm CNC Angle Drilling Machine emerges as an indispensable tool in the steel tower manufacturing industry, specifically designed to deliver precision drilling on large angle steel profiles ranging from 140×140×10mm to 360×360×35mm. This specialized equipment addresses the critical need for accurate hole placement in tower structural components, where even minor deviations can compromise structural integrity and assembly efficiency.
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The BL3635 CNC Angle Drilling Machine is a specialized tool for large-angle steel drilling (140×140×10mm to 360×360×35mm), designed for steel tower, wind energy, and heavy construction industries. It features 3 independent drilling spindles per side for simultaneous hole drilling, ensuring high precision and throughput for critical structural components.
• Multi-spindle design reduces processing time by 60% vs. single-spindle machines.
• ±0.02mm positioning resolution meets strict tower assembly tolerances.
• Automatically adjusts for angle steel thickness (10–35mm) via preprogrammed material databases.
• Optional marking station (1200kN force) eliminates separate part number stamping.
A key feature of this machine is its configuration of 3 independent drilling spindles per side, enabling simultaneous drilling of multiple holes in a single pass. This multi-spindle design reduces processing time by up to 60% compared to single-spindle machines when working with angle steel that requires multiple hole patterns. Each spindle features a BT40 taper and is powered by a 15 kW motor, capable of drilling holes from φ17.5mm to φ40mm in hardened alloy steel with high precision.
True to its designation, the machine accommodates angle steel sizes from 140×140×10mm up to 360×360×35mm, covering the full spectrum of large angles used in heavy-duty steel tower construction. The material feeding system incorporates servo-driven rollers with adjustable pressure settings, ensuring secure handling of both small and large angle sections without deformation. A specialized centering mechanism automatically aligns angles along their centerline, maintaining consistent hole positioning across different profile sizes.
The machine delivers exceptional accuracy with ±0.02mm positioning resolution across the X, Y, and Z axes, ensuring hole locations meet the strict tolerances required for tower assembly. Spindle spacing can be adjusted steplessly from 50mm to 330mm, allowing for flexible hole pattern programming. The CNC system stores up to 1000 drilling programs, each capable of including multiple hole patterns, countersinks, and marking operations—eliminating the need for separate processing steps.
Equipped with an industrial-grade CNC system featuring a 12-inch touchscreen interface, the machine offers intuitive programming with both manual input and CAD file import capabilities. Operators can preview drilling sequences in 3D before production, reducing setup time and minimizing material waste. The system includes real-time monitoring of spindle load, feed rate, and tool temperature, with automatic adjustments to prevent tool breakage and ensure consistent hole quality.
In electrical power infrastructure, the machine drills connection holes in angle steel components used in high-voltage transmission towers and substation structures. Its precision ensures proper alignment of cross-bracing members and foundation connections, critical for withstanding wind loads and environmental stresses over the tower’s service life.
For cellular and microwave communication towers, the machine processes angle steel used in tower legs, antenna mounts, and access platforms. The consistent hole positioning enables faster on-site assembly and ensures the structural stability required for tall communication structures.
The machine plays a vital role in manufacturing angle steel components for wind turbine towers and foundation systems. Its ability to drill precise holes in thick-walled angles ensures secure flange connections and proper load distribution in these large renewable energy structures.
Beyond tower applications, the machine processes large angle steel for industrial crane systems, bridge components, and offshore platform structures—wherever precise hole placement in heavy angles is required for structural integrity.
The drilling spindles offer stepless speed adjustment from 180 to 3000 r/min, allowing operators to optimize cutting parameters for different material thicknesses and drill sizes. For a standard φ25mm hole in 20mm thick angle steel, the machine achieves a drilling cycle time of approximately 15 seconds per hole.
The machine automatically adjusts spindle feed rate and drilling pressure based on programmed material thickness, ranging from 10mm to 35mm. The CNC system includes predefined material databases for common structural steels, with options to create custom profiles for specialized materials.
Yes, the machine can be equipped with an optional marking station that provides 1200kN nominal marking force for stamping part numbers, batch codes, or quality control identifiers directly on the angle steel. This eliminates the need for separate marking operations.
Safety features include interlocked protective guards, emergency stop buttons at multiple stations, and infrared sensors that halt operation if an operator’s hand enters the drilling zone. The machine also features overload protection that automatically stops spindles if excessive resistance is detected.
The machine operates on a three-phase four-wire system with 380V AC voltage and 50Hz frequency. It requires a dedicated 60A electrical supply and compressed air at 0.6–0.8MPa for clamping and chip removal systems.
Angle size (mm) | 140×140×10 - 360×360×35 |
Range of stadia(mm) | 50 ~ 330(stepless) |
The quantity of drilling cow per side | arbitrariness |
Quantity of drilling spindle per side | 3 |
Range of drilling diameter(hard metal)(mm) | φ17.5 ~ φ40mm |
No. of character group | 1 |
Nominal marking force | 1200KN |
No. of characters per character group | 20 |
Character size | 14×10mm |
Motor power of drilling spindle (KW) | 2×5.5 |
Rotation speed of spindle(r/min) | 180 -560(stepless adjustment) |
Feeding speed(mm/min) | 20 ~ 280 |
Quantity of CNC axis | 3 |
Hydraulic power pack’s cooling way | By water cooling |
Max. length of workpiece (m) | 12m |
Angle feeding speed (m/min) | 40 |
The max length of finished angle | 12m |
Serial No. | Code | Name | Quantity | Remark |
1 | ADM3635.5-11 | The upper claw | 2 | Including claw installed in the machine |
2 | ADM3635.5-11A | The upper claw | 2 | |
3 | BL2020.4-12(1) | Character | 10 | Character 0 to 9 |
4 | MT.4-MT.3 | reducing sleeve (length 157) | 2 | including the reducing sleeve installed in the machine |
5 | MT.4-MT.3 | reducing sleeve (length 202) | 2 | including the reducing sleeve installed in the machine |
6 | MT.4-MT.3 | reducing sleeve (length 247) | 2 | including the reducing sleeve installed in the machine |
7 | MT.4-MT.2 | reducing sleeve (length 178.5) | 4 | including the reducing sleeve installed in the machine |
8 | MT.4-MT.2 | reducing sleeve (length 223.5) | 4 | including the reducing sleeve installed in the machine |
9 | MT.4-MT.2 | reducing sleeve (length 268.5) | 4 | including the reducing sleeve installed in the machine |
10 | SHZ14A-2 | Spring | 2 | |
11 | APM2020.2-32 | Extension spring | 1 | |
12 | 4×100×50 | Timing belt | 1 | |
13 | Air gun | 1 | ||
14 | Common tools(including:full set of inner hexangular wrench, 500, 300, 150MM adjustable wrench, two solid wrench, a set of screwdriver) | 1set | ||
15 | Pressure oiler | 1 | ||
16 | Drawing of wearing parts | 2 | ||
17 | Quality Certificate, Packing List | 1 volume each | ||
18 | Instructions (mechanical, electrical, hydraulic) | 2 volume each |
No. | Name | Brand | Country |
1 | AC Servo motor | Panasonic | Japan |
2 | Orientation module | Mitsubishi | Japan |
3 | Program controller | Mitsubishi | Japan |
4 | Proximity switch | AUTONICS | Korea |
5 | Electromagnetic valve | ATOS/Yuken | Italy/ Taiwan China |
6 | Relief valve | ATOS/Yuken | Italy /Taiwan China |
7 | Pressure reducing valve | ATOS/Yuken | Italy/ Taiwan China |
8 | Guide Rail | HIWIN/CSK | Taiwan China |
9 | Pneumatic combined unit | SMC/CKD | Japan |
10 | Air valve | AIRTAC | Taiwan China |
11 | Cylinder | AIRTAC | Taiwan China |
The BL3635 CNC Angle Drilling Machine is a specialized tool for large-angle steel drilling (140×140×10mm to 360×360×35mm), designed for steel tower, wind energy, and heavy construction industries. It features 3 independent drilling spindles per side for simultaneous hole drilling, ensuring high precision and throughput for critical structural components.
• Multi-spindle design reduces processing time by 60% vs. single-spindle machines.
• ±0.02mm positioning resolution meets strict tower assembly tolerances.
• Automatically adjusts for angle steel thickness (10–35mm) via preprogrammed material databases.
• Optional marking station (1200kN force) eliminates separate part number stamping.
A key feature of this machine is its configuration of 3 independent drilling spindles per side, enabling simultaneous drilling of multiple holes in a single pass. This multi-spindle design reduces processing time by up to 60% compared to single-spindle machines when working with angle steel that requires multiple hole patterns. Each spindle features a BT40 taper and is powered by a 15 kW motor, capable of drilling holes from φ17.5mm to φ40mm in hardened alloy steel with high precision.
True to its designation, the machine accommodates angle steel sizes from 140×140×10mm up to 360×360×35mm, covering the full spectrum of large angles used in heavy-duty steel tower construction. The material feeding system incorporates servo-driven rollers with adjustable pressure settings, ensuring secure handling of both small and large angle sections without deformation. A specialized centering mechanism automatically aligns angles along their centerline, maintaining consistent hole positioning across different profile sizes.
The machine delivers exceptional accuracy with ±0.02mm positioning resolution across the X, Y, and Z axes, ensuring hole locations meet the strict tolerances required for tower assembly. Spindle spacing can be adjusted steplessly from 50mm to 330mm, allowing for flexible hole pattern programming. The CNC system stores up to 1000 drilling programs, each capable of including multiple hole patterns, countersinks, and marking operations—eliminating the need for separate processing steps.
Equipped with an industrial-grade CNC system featuring a 12-inch touchscreen interface, the machine offers intuitive programming with both manual input and CAD file import capabilities. Operators can preview drilling sequences in 3D before production, reducing setup time and minimizing material waste. The system includes real-time monitoring of spindle load, feed rate, and tool temperature, with automatic adjustments to prevent tool breakage and ensure consistent hole quality.
In electrical power infrastructure, the machine drills connection holes in angle steel components used in high-voltage transmission towers and substation structures. Its precision ensures proper alignment of cross-bracing members and foundation connections, critical for withstanding wind loads and environmental stresses over the tower’s service life.
For cellular and microwave communication towers, the machine processes angle steel used in tower legs, antenna mounts, and access platforms. The consistent hole positioning enables faster on-site assembly and ensures the structural stability required for tall communication structures.
The machine plays a vital role in manufacturing angle steel components for wind turbine towers and foundation systems. Its ability to drill precise holes in thick-walled angles ensures secure flange connections and proper load distribution in these large renewable energy structures.
Beyond tower applications, the machine processes large angle steel for industrial crane systems, bridge components, and offshore platform structures—wherever precise hole placement in heavy angles is required for structural integrity.
The drilling spindles offer stepless speed adjustment from 180 to 3000 r/min, allowing operators to optimize cutting parameters for different material thicknesses and drill sizes. For a standard φ25mm hole in 20mm thick angle steel, the machine achieves a drilling cycle time of approximately 15 seconds per hole.
The machine automatically adjusts spindle feed rate and drilling pressure based on programmed material thickness, ranging from 10mm to 35mm. The CNC system includes predefined material databases for common structural steels, with options to create custom profiles for specialized materials.
Yes, the machine can be equipped with an optional marking station that provides 1200kN nominal marking force for stamping part numbers, batch codes, or quality control identifiers directly on the angle steel. This eliminates the need for separate marking operations.
Safety features include interlocked protective guards, emergency stop buttons at multiple stations, and infrared sensors that halt operation if an operator’s hand enters the drilling zone. The machine also features overload protection that automatically stops spindles if excessive resistance is detected.
The machine operates on a three-phase four-wire system with 380V AC voltage and 50Hz frequency. It requires a dedicated 60A electrical supply and compressed air at 0.6–0.8MPa for clamping and chip removal systems.
Angle size (mm) | 140×140×10 - 360×360×35 |
Range of stadia(mm) | 50 ~ 330(stepless) |
The quantity of drilling cow per side | arbitrariness |
Quantity of drilling spindle per side | 3 |
Range of drilling diameter(hard metal)(mm) | φ17.5 ~ φ40mm |
No. of character group | 1 |
Nominal marking force | 1200KN |
No. of characters per character group | 20 |
Character size | 14×10mm |
Motor power of drilling spindle (KW) | 2×5.5 |
Rotation speed of spindle(r/min) | 180 -560(stepless adjustment) |
Feeding speed(mm/min) | 20 ~ 280 |
Quantity of CNC axis | 3 |
Hydraulic power pack’s cooling way | By water cooling |
Max. length of workpiece (m) | 12m |
Angle feeding speed (m/min) | 40 |
The max length of finished angle | 12m |
Serial No. | Code | Name | Quantity | Remark |
1 | ADM3635.5-11 | The upper claw | 2 | Including claw installed in the machine |
2 | ADM3635.5-11A | The upper claw | 2 | |
3 | BL2020.4-12(1) | Character | 10 | Character 0 to 9 |
4 | MT.4-MT.3 | reducing sleeve (length 157) | 2 | including the reducing sleeve installed in the machine |
5 | MT.4-MT.3 | reducing sleeve (length 202) | 2 | including the reducing sleeve installed in the machine |
6 | MT.4-MT.3 | reducing sleeve (length 247) | 2 | including the reducing sleeve installed in the machine |
7 | MT.4-MT.2 | reducing sleeve (length 178.5) | 4 | including the reducing sleeve installed in the machine |
8 | MT.4-MT.2 | reducing sleeve (length 223.5) | 4 | including the reducing sleeve installed in the machine |
9 | MT.4-MT.2 | reducing sleeve (length 268.5) | 4 | including the reducing sleeve installed in the machine |
10 | SHZ14A-2 | Spring | 2 | |
11 | APM2020.2-32 | Extension spring | 1 | |
12 | 4×100×50 | Timing belt | 1 | |
13 | Air gun | 1 | ||
14 | Common tools(including:full set of inner hexangular wrench, 500, 300, 150MM adjustable wrench, two solid wrench, a set of screwdriver) | 1set | ||
15 | Pressure oiler | 1 | ||
16 | Drawing of wearing parts | 2 | ||
17 | Quality Certificate, Packing List | 1 volume each | ||
18 | Instructions (mechanical, electrical, hydraulic) | 2 volume each |
No. | Name | Brand | Country |
1 | AC Servo motor | Panasonic | Japan |
2 | Orientation module | Mitsubishi | Japan |
3 | Program controller | Mitsubishi | Japan |
4 | Proximity switch | AUTONICS | Korea |
5 | Electromagnetic valve | ATOS/Yuken | Italy/ Taiwan China |
6 | Relief valve | ATOS/Yuken | Italy /Taiwan China |
7 | Pressure reducing valve | ATOS/Yuken | Italy/ Taiwan China |
8 | Guide Rail | HIWIN/CSK | Taiwan China |
9 | Pneumatic combined unit | SMC/CKD | Japan |
10 | Air valve | AIRTAC | Taiwan China |
11 | Cylinder | AIRTAC | Taiwan China |
