What materials and thread specifications can electric tapping machines process?

Materials and thread specifications that can be processed by electric tapping machines

1. Processable Metal Materials

According to industry standards, metal materials can be divided into six categories: P-steel, M-stainless steel, K-cast iron, N-nonferrous metals, S-heat-resistant alloys, and H-hardened steel. Electric tapping machines, with their powerful motors and rigid structure, enable efficient tapping in these materials.
Common processing targets include ordinary carbon steel, alloy steel, copper, aluminum, iron, and other metals, meeting the needs of industries such as machinery, automotive, and aviation. 2. Thread Specification Range

The machine covers diameters from M2 to M48, with the following specifications: M2-M16 (600W power, maximum speed 375rpm), M6-M30 (1200W power, maximum speed 200rpm), M6-M36 (1200W power, maximum speed 125rpm), and M33-M48 (1200W power, maximum speed 50rpm).
This range includes internal and external threads, as well as various pitch combinations (coarse and fine), meeting all requirements from small precision components to large structural parts.

3. The Impact of Material Properties on Processing

Harder steels require higher torque and lower feed rates to prevent tool jamming. Softer metals (such as aluminum and copper) can be tapped at higher speeds for faster threading.

By adjusting motor power, reduction ratio, and control software parameters, the machine can smoothly switch between different materials, maintaining machining accuracy. 4. Compatible Thread Types

It supports standard metric threads (M series) and some imperial threads (UNC/UNF). Special threads (such as trapezoidal and conical threads) can be processed by replacing the tap chuck.

How does the CNC function of a servo electric tapping machine achieve precise depth and torque control?

CNC Functions of a Servo Electric Tapping Machine: Implementation Mechanism of Precise Depth and Torque Control

1. Closed-Loop Sensing and Real-Time Torque Monitoring

The machine tool is equipped with a cutting force/torque sensor that captures tool forces in real time and feeds the signal back to the CNC system. The system automatically adjusts motor output based on the set torque threshold to prevent overload and tool jamming.

2. Segmented Approximate Torque Curve Algorithm

The "segmented approximate torque curve" control strategy employs segmented modeling of the motor's acceleration and deceleration processes, achieving fast response and smooth torque changes. This algorithm does not rely on precise physical models, yet maintains high stability and precision during rigid tapping. 3. Depth Setting at the CNC Command Level

The operator presets the target tapping depth (Z-axis displacement) on the CNC panel, and the system performs closed-loop control based on position information provided by the encoder. Each feed is completed within micron-level tolerances, ensuring consistent thread bottom hole depth.
4. Real-time Error Compensation and Safety Protection

When the sensor detects that the actual torque or depth deviates from the set value, the controller immediately performs error compensation: reducing the feed rate, lowering the rotational speed, or pausing the feed. If the torque exceeds the safety threshold, the system automatically shuts down and issues an alarm to prevent tool damage or workpiece deformation.