There are significant differences between linear shafts and rotary shafts in many aspects, which are mainly reflected in the structural form, application scenarios, motion characteristics and installation methods.
1. Structural form
Linear shaft: The linear shaft servo motor converts the rotary motion of the motor into linear motion through a linear motion transmission mechanism (such as a ball screw, linear guide, etc.). This conversion requires special design and processing, including components such as linear guides, sliders, nuts, and drive devices. The main structural feature of the linear shaft is the relative movement between the linear guide and the slider.
Rotary shaft: The rotary shaft servo motor directly uses the motor's own rotational motion to achieve precise positioning and control. The rotary shaft motor is relatively simple in structure and mainly moves around the motor's rotation center.
2. Application scenario
Linear shaft: Because it can achieve high-precision linear motion, the linear shaft servo motor is suitable for short-distance, high-precision linear motion control scenarios, such as semiconductor manufacturing, electronic circuit assembly and other fields. The length and precision limitations of the linear shaft make it more suitable for relatively small strokes and loads.
Rotary shaft: Rotary shaft servo motors are widely used in motion scenarios that require angle and speed control, such as machining, flight control, automated production lines and other fields. The rotary axis motor can accurately control the motor's speed, angle, position and other parameters to meet the needs of these fields for high-precision motion control.
3. Motion characteristics
Linear axis: The motion trajectory of the linear axis is a straight line, with high precision, high speed, high rigidity and high load. The design and manufacturing level of linear axis is constantly improving, and it can meet various complex working environments and requirements.
Rotary axis: The motion characteristics of the rotary axis are mainly reflected in its rotational motion, including speed, angle and rotation direction. The rotary axis motor achieves precise control through a closed-loop controller to ensure the stability and accuracy of the rotational motion.
4. Installation method
Linear axis: The linear axis servo motor usually adopts a fixed installation method to fix components such as linear guides and sliders on the workbench, and realizes linear motion through the drive device.
Rotary axis: The rotary axis servo motor usually adopts an axial installation method to directly install the motor on the component that needs to rotate, and drives the component to rotate through the rotation of the motor.