In modern automated production, the automatic screw-tightening mechanism plays a vital role. It not only raises production efficiency but also ensures the stability and consistency of product quality. Below, the main components of an automatic screw-tightening mechanism are introduced in detail, illustrated with Danikor-brand equipment.

Screw Feeder: Orderly Supply

The screw feeder is the foundational device of the entire tightening system. Its primary function is to arrange screws that are initially in a disordered state and then deliver each screw accurately to the tightening nose through a blow-feed tube. Three common types are found on the market: vibratory bowl feeders, disk feeders, and step feeders.

Tightening Module: Ensuring Correct Fastening

The tightening module is the key actuator of the mechanism. It supports the screw and, driven by a cylinder or motor, brings the tightening tool to complete the fastening action. Depending on the tightening conditions and screw types, a variety of structural forms are available.

Motion System: Flexible Positioning

The motion system drives the tightening module to every screw hole and therefore is the critical link for full automation. Typical systems include three-axis platforms and various robots.

Three-axis platform:

Using X-, Y-, and Z-axis movements, the platform positions the tightening module precisely at each screw hole. Danikor three-axis platforms employ high-precision linear guides and ball-screw transmissions to achieve millimetre-level—or even higher—positioning accuracy, guaranteeing that every screw enters its hole without error. Their rigid structure and reliable control system maintain positioning accuracy and stability during long-term operation.

Robotic motion system:

Robots offer greater flexibility and adaptability, suiting complex, changeable production environments and products of varying shapes and sizes. Danikor collaborates with several robot manufacturers to provide integrated robotic screw-tightening solutions. Programmable robots can execute intricate motion paths, easily handling multi-point and multi-angle fastening tasks, thereby greatly increasing the degree and efficiency of automation.

Tightening Tool: Accurate Fastening

The tightening tool is the core component that contacts the screw directly and performs the fastening. Automated systems usually adopt intelligent tightening tools such as electric screwdrivers, which provide torque and speed control to ensure the tightening torque meets process requirements.

Intelligent electric screwdriver:

Equipped with high-precision torque control and real-time monitoring, Danikor intelligent electric screwdrivers use advanced motor-control technology and torque sensors to regulate torque accurately with minimal deviation. Each tightening cycle is recorded—torque, speed, tightening time, etc.—and the data can be uploaded to the plant’s production-management system for quality traceability and process optimisation.

An automatic screw-tightening mechanism is composed of the screw feeder, tightening module, motion system, and tightening tool. Danikor has extensive experience and mature technology in the R&D and manufacture of these devices. It delivers efficient, accurate, and reliable solutions for automatic screw tightening in diverse industries, helping enterprises raise production efficiency and product quality while achieving intelligent manufacturing transformation.