Li Liancheng, Director of the Process Technology Department at Xuzhou Heavy Machinery Co., Ltd.
In today's rapidly evolving industrial landscape, the demand for high-quality manufacturing is continuously rising. The construction machinery sector is under increasing pressure to deliver more efficient and precise production solutions. As a result, improving processing efficiency has become a top priority for manufacturers. To stay competitive, companies must constantly adopt advanced technologies and adapt them effectively to on-site conditions. This not only reduces manufacturing time but also enhances product quality and reliability.
Choosing the Right Machining Equipment
Given the widespread use of boom structures in construction equipment—such as truck crane booms, excavator booms, and wrecker tractor arms—it’s common to encounter workpieces that require multiple sets of precisely aligned holes. Ensuring a high level of coaxiality is crucial, especially when dealing with long and complex components. To meet these demands, many manufacturers opt for an opposed horizontal double-sided boring and milling machining center (see Figure 1). This type of machine features two independent mainframes, with control panels connected via network cables. This setup allows operators to monitor and maintain consistent coordinate systems between the main and auxiliary units, ensuring accurate and efficient machining processes.
Figure 1: Horizontal Double-Sided Boring and Milling Machining Center
The X-axis guides of the two mainframes in this type of machine can sometimes experience misalignment due to environmental factors like foundation movement. Therefore, it’s essential to regularly check the verticality and coaxiality between the axes of the machine tool. To efficiently measure the coaxiality of the two masts, the machine often comes equipped with a RENISHAW detection system. This system collects data from multiple points (as shown in Figure 2), ensuring that the measured area is within the acceptable range and maintaining precision during the machining process.
Figure 2: RENISHAW Probe Detects Mast Coaxiality
For certain components, such as turntables used in large-tonnage all-terrain cranes, there are often structural parts that require machining in tight spaces. Conventional drilling and milling machines may not be suitable for such tasks. In contrast, pentahedral machining centers with narrow vertical milling attachment heads offer a practical solution. These attachments allow for precise machining in confined areas without the need for custom non-standard tools, reducing costs and significantly improving processing efficiency.
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