9 CNC Axes CNC Angle Steel Drilling & Marking Processing Line For Transmission Tower

About 9 CNC Axes CNC Angle Steel Drilling & Marking Processing Line For Transmission Tower

Product Structure Characteristics

1. The equipment is equipped with advanced automated configuration. The production line integrates automated loading subsystems including horizontal feed troughs and rotary support cradles, alongside automatic unloading and replenishment feeding modules. Full-process integrated implementation of all angle steel hole fabrication and stencil marking processes is accomplished without manual participation, substantially mitigating onsite labor workload for operators.

2. The marking unit adopts fully enclosed structural layout characterized by high structural stiffness and dependable running stability. This assembly consists of stationary base framework, movable carriage, hydraulically actuated clamping marking die seat and other critical components, which executes pinpoint marking tasks in accordance with preset CNC programming commands. A manual trimming module is additionally integrated to broaden the machines applicable processing spectrum; users may fine-adjust the downstroke of movable assemblies and marking tip positions to satisfy marking specifications for angle steel of diverse dimensional grades.

3. The equipment maintains superior positioning accuracy during hole machining procedures. Its feeding assembly is powered by servo actuators coupled with rack-and-pinion transmission pairs, complemented by detection pinions and rotary encoders for real-time positional feedback to construct a full closed-loop control loop. Meanwhile, drilling spindle heads travelling along two sides of angle steel are servo-driven via precision ball screw transmissions, reliably securing high dimensional precision of finished boreholes on angle steel blanks.

4. The machine realizes prominent drilling throughput and refined machining finish. Six independent CNC drilling power cartridges are deployed within the drilling system, with three units symmetrically mounted on either side of the angle steel profile. For equidistant bores of identical bore size distributed on two flanges of angle steel, paired drilling spindles on bilateral sides are enabled to conduct synchronized piercing cycles.

5. The drilling spindle employs Taiwan-originated BT40 high-precision spindle with internal coolant passage design, paired with solid carbide cutting drills. Its peripheral cutting velocity peaks at 200 m/min, greatly surpassing the 2535 m/min cutting speed of conventional high-speed steel twist drills while maintaining accelerated feed rates. Each numerically controlled drilling unit is driven by servo motors for feed travel; rapid traverse, cutting feed and tool retraction movements are entirely automated and governed by the CNC controller. Operators may predefine tool retraction coordinates via upper-level industrial PC to reduce idle stroke and boost comprehensive manufacturing efficiency. Machined bore dimensional tolerance is restricted within 0.1 mm, with surface roughness Ra controlled below 6.3 m to guarantee superior hole processing quality.

6. Indexable insert carbide drills are recommended for practical deployment. Such cutting tools are fitted with four-index replaceable cutting inserts free from manual regrinding requirements, helping enterprises lower comprehensive production expenses. The drill assembly is fitted with internationally mature Minimum Quantity Lubrication (MQL) cooling setup, which mixes compressed dry air with micro-dose cutting fluid, forms atomized mist and sprays into cutting zone for effective cooling and lubrication. The system achieves ultra-low fluid consumption ranging only from 5 ml to 50 ml per operating hour.