A drilling and tapping machine is a CNC machine tool that combines the functions of drilling and tapping, used to precisely produce holes and threads on workpieces. These machines are typically equipped with an automatic tool changer and CNC control system, automating multiple machining steps, including positioning, drilling, tapping, and possibly milling and boring, significantly improving production efficiency and machining accuracy.
Positioning is done by the X, Y, and Z axes, and cutting is done by the Principal axis.
Preparation stage：
1. Product design and programming: CAD design - CAM programming (setting the machining origin - selecting the tool - generating tool paths - post-processing);
2.Workpiece and fixture preparation: material preparation - design and manufacture fixtures;
3.Machine tool preparation: install fixture - install workpiece - prepare tool;
Execution stage:
1.Program input and tool setting: transfer program - set zero point - tool length compensation;
2.Automatic machining cycle: tool change - movement positioning - execution of machining - repeated movement - cycle tool change and machining - tapping operation - cycle the above operations until completion;
Completion stage:
1.Processing completion and inspection
2.Mass production
3.Cleaning and maintenance
Summary of features: Drilling and tapping machines are a type of equipment with centralized processes, unmanned operation, and extremely high repeatability, reflecting the automation, digitization, and high efficiency of modern manufacturing. They have extremely high requirements for servo stability, positioning accuracy, and servo responsiveness.
To address the unique characteristics of this drilling and tapping machine, the FRECON servo system utilizes bus communication and the SD300N series drive. The main axis utilizes an 11kW servo drive and motor, while the X, Y, and Z axes utilize 3000W servo drives and motors. This results in outstanding positioning and acceleration performance, accelerating from standstill to 48 m/min in just 0.18 seconds. Standard displacement speeds reach 48/48/60 m/min, improving positioning efficiency by 30-50% compared to conventional models. The optimal positioning accuracy reaches ±0.005mm, and the optimal repeatability reaches ±0.0025mm.
