How to distinguish between servo and pneumatic tightening machines when purchasing Dalian tightening machines

How to distinguish between servo and pneumatic tightening machines when purchasing Dalian tightening machines

Dalian tightening machine is the core equipment used for bolt tightening in automated assembly lines, and the mainstream market is divided into two categories: servo tightening machine and pneumatic tightening machine. When selecting procurement, many companies tend to confuse the performance of the two, and differentiate the selection based on assembly accuracy, cost, and data requirements, which can avoid equipment waste and ensure stable assembly quality.

The pneumatic tightening machine uses compressed air as its power source and relies on a pneumatic motor to output torque. It has a simple structure, low procurement cost, lightweight equipment, easy maintenance, and is suitable for batch fastening operations of ordinary fasteners. However, the torque control accuracy of pneumatic tightening machines is limited and greatly affected by air pressure fluctuations, making it impossible to accurately control torque and angle, and generally unable to record tightening data in real time. It is commonly used in scenarios where assembly accuracy is not high and there is no requirement for data traceability, such as the assembly of ordinary hardware and non critical components.

Servo tightening machine relies on servo motor drive, with closed-loop control of torque and angle, high tightening accuracy, and strong anti-interference ability. The device comes with a control system that can collect and store tightening data in real time, support alarm for non-conforming products, and meet the data traceability requirements for product assembly. Servo tightening machine can flexibly set multiple tightening processes, control torque and speed step by step, suitable for high-precision assembly, commonly used in key bolt locking processes such as automotive parts, motors, precision instruments, etc. The disadvantage is that the procurement price is higher, and there are certain requirements for the usage environment and daily maintenance.

The differences between the two are mainly reflected in accuracy, data functionality, and cost. If the assembly process requirements are not strict and the budget is limited, and there is no need for data recording, a pneumatic tightening machine can be used. For critical connection parts that require high-precision tightening and data archiving traceability, priority should be given to servo Dalian tightening machines.

In addition to comparing accuracy indicators during procurement, it is also necessary to evaluate workshop gas source conditions, production line automation support, and later operation and maintenance costs. Only by integrating assembly process standards can suitable tightening equipment for the production line be selected to reduce assembly failure rates.