In metal processing, precision often directly determines the quality and qualification rate of products. Even a deviation of 0.01 millimeters can lead to the scrapping of a mold or the failure of a part. However, linear electric cylinders, with their unique structural and technical advantages, have become the core force in safeguarding precision.
Linear electric cylinders adopt a combined transmission method of servo motors and precision lead screws. This "strong alliance" elevates the precision of motion control to a new level.
Servo motors can accurately receive control signals, and every tiny command can be executed precisely; while precision lead screws are like accurate "rulers". When converting the rotational motion of the motor into linear motion, the error is controlled within an extremely small range — usually, the repeat positioning accuracy can be stably maintained within ±0.01 millimeters, and some high-end models can even reach the micrometer level.
For example, in mold processing, when equipment needs to mill or drill mold cavities, the worktable or cutting tools driven by linear electric cylinders can move stably along the preset trajectory.
Traditional hydraulically driven equipment may experience "crawling" or "offset" due to issues such as oil compressibility and pipeline leakage, resulting in insufficient dimensional accuracy of mold cavities; in contrast, linear electric cylinders are not affected by these factors. They can ensure that each feed of the cutting tool is accurately in place, and the deviation between the finally processed mold cavity and the design drawing is almost negligible, which greatly improves the adaptability and service life of the mold.
In the grinding of precision parts, the advantages of linear electric cylinders are equally obvious.
The grinding process requires fine adjustment of the relative position between the grinding wheel and the workpiece. Linear electric cylinders can quickly respond to control signals and real-time correct the feed rate of the grinding wheel. For instance, when processing complex-shaped precision parts such as steam turbine blades, the grinding wheel frame driven by linear electric cylinders can move smoothly along complex curved trajectories, ensuring the grinding precision of each curved surface of the blade and enabling the part to meet high standards in both surface roughness and shape accuracy.