Complete Guide to Automatic Screw Locking Machines: Working Principles, Type Selection, and Maintenance Explained

As a professional sharing from Shenzhen Hongred Technology Co., Ltd., this article will comprehensively introduce the working principle, equipment types, and daily maintenance points of automatic screw locking machines.

I. What is an automatic screw locking machine

The automatic screw locking machine (also known as the automatic screw fastening machine or automatic screw locking device) is an intelligent assembly device that uses automated mechanisms to replace manual labor, completing the automatic supply, precise positioning, and torque tightening of screws.It integrates mechanical, electrical, pneumatic, and control technologies, and is an important component of modern intelligent manufacturing.

II. Working Principle

The workflow of an automatic screw locking machine is mainly divided into the following steps:

1.Screw supply:Through a vibrating plate or air-feeding method, bulk screws are automatically arranged neatly and transported one by one to the fastening position.

2.Positioning Identification:Using mechanical positioning or a visual recognition system, precisely determine the coordinates of the screw hole, with a positioning accuracy of up to ±0.02 millimeters.

3.Locking execution:The electric screwdriver completes the fastening action according to the preset torque parameters, with torque accuracy controlled within plus or minus 3%, ensuring the consistency of fastening for each screw.

4.Detection Feedback:Real-time monitoring of the locking status through the torque sensor, automatically determining whether there are abnormalities such as stripped threads or floating locks, and triggering an alarm.

III. Main types

Handheld screw locking machine:Flexible operation, suitable for small-batch, multi-variety production, with relatively low cost, making it the preferred entry choice for small and medium-sized enterprises.

Desktop Screw Locking Machine:Three-axis or four-axis movement, suitable for medium-volume production, cost-effective, programmable to control multiple locking points.

Multi-axis screw locking machine:Multiple locking heads operate simultaneously, suitable for large-scale standardized products, with the highest efficiency, capable of achieving a production capacity of thousands of units per hour.

Visual Screw Locking Machine:Equipped with a CCD vision system, it automatically recognizes hole positions and corrects deviations, suitable for high-precision assembly requirements of precision electronic products.

IV. Key Points for Selection

When selecting an automatic screw locking machine, the following factors should be considered: screw specifications (diameter, length, head type), product size and weight, daily production requirements, precision requirements, budget

 range, and after-sales service capabilities.It is recommended to provide samples for trial testing before purchase to ensure the equipment meets actual production needs.

V. Daily Maintenance

Regularly clean the vibratory bowl and feeding channels to prevent screws from getting stuck;regularly check the torque accuracy of the electric screwdriver and calibrate if necessary;keep the moving parts of the equipment lubricated to extend service life;regularly back up program parameters to prevent data loss.

Shenzhen Hongred Technology Co., Ltd.provides automatic screw locking machines in various specifications, and offers complete installation and debugging, operation training, and after-sales services.Welcome to contact us for professional solutions.

Source: Shenzhen Hongruida Technology Co., Ltd.| Release Date: April 1, 2026