Automatic Wire Twisting Machines: Improving Consistency & Speed

Why Wire Twisting Matters

In automotive CAN bus systems, industrial fieldbus networks, and data communication cables, the twist pitch (twists per metre) directly affects the cable's immunity to electromagnetic interference. An inconsistent twist pitch compromises signal integrity, potentially causing communication errors or system malfunctions in the final application. Automatic wire twisting machines guarantee the programmed twist pitch is maintained throughout the entire wire pair length — from the first twist to the last.

How Stellar Dawang Automatic Wire Twisting Machines Work

The machine feeds two pre-cut and stripped wires simultaneously through a twisting head that rotates at a controlled speed relative to the wire feed rate. The ratio of rotation speed to linear feed speed determines the twist pitch. Servo motors on both axes enable precise, real-time control of twist pitch throughout the wire pair length, including the ability to vary pitch along the length for speciality cable designs.

Key Features and Technical Specifications

Stellar Dawang automatic wire twisting machines are designed to deliver high-speed, highly accurate twisted pair production for demanding industrial and communication cable applications.

Programmable Twist Pitch

Operators program the required twist pitch (typically 10 to 100 mm per twist) via touchscreen HMI, with ±1 mm accuracy across the full wire length. Multiple twist programmes are stored for instant job recall, minimising changeover time.

High Processing Speed

Stellar Dawang machines achieve twisting speeds of up to 2,500 rpm, enabling production rates of 2 to 8 metres of twisted pair per minute depending on wire gauge and twist pitch — far exceeding manual twisting capability.

Untwisted End Length Control

Precisely controls the untwisted end length at both wire ends, ensuring the stripped ends remain untwisted for clean connector termination — a critical quality parameter in automotive and data cable applications.

Applications and Industries Served

• Automotive: CAN bus wiring, sensor cables, and power harness pairs requiring specific EMI performance.
• Industrial Automation: Fieldbus cable pairs for PROFIBUS, DeviceNet, and Ethernet applications.
• Telecommunications: Data transmission pairs for structured cabling and patch cord manufacturing.
• Aerospace & Defence: Precision twisted pairs for avionics and defence communication systems with stringent EMI specifications.

Quality Assurance Integration

Stellar Dawang's automatic wire twisting machines can be integrated with downstream inspection systems that verify twist pitch using optical sensors — providing 100% in-process quality verification and automatic rejection of out-of-specification pairs.