Precision Electric Screwdriver: Improving Torque Consistency in a Lighter Design

A Common Industry Challenge

Torque is an important control parameter in threaded-fastener assembly, and different joints require appropriate torque settings.

Consistent and repeatable torque is therefore a common engineering consideration for powered tightening tools, rather than a problem unique to one product. Atlas Copco's tightening guidance similarly treats torque as a central parameter in screw-joint control.

What the Customer Needed

The customer needed a lightweight electric screwdriver for precision assembly and everyday use.

The product had to combine consistent torque output, practical battery operation and comfortable handling.

How Tongyong Industries Addressed It

Tongyong Industries optimized the motor and control system to improve torque consistency.

The mechanical structure was also refined to reduce overall weight, followed by torque, battery and durability testing.

The Result

Torque output was maintained within ±5%, with up to three hours of continuous operation.

Overall product weight was reduced by 20%, while assembly efficiency increased by 30%.