How do you choose the drive method for a variable‑pitch module? Which is better: servo, stepper, or cam?
Drive method | Core Advantages | Applicable Scenarios |
|---|---|---|
servo electric type | Programmable parameters, flexible and adjustable, high positioning accuracy (micron level), full closed-loop control | Multi-specification, frequent production changes; semiconductor packaging, optical inspection, precision electronic assembly and other high-precision processes. |
Stepping/Cam | Low cost, fast response, good synchronization, stable operation | Mass production of a single product; regular working conditions such as ordinary packaging, sorting, and whole rows. |
Mechanical (screw/cam) fixed mode | Simple structure and low maintenance cost | Dedicated production lines with fixed spacing and less replacement of production |
Manual adjustment (handwheel) | Simple, zero power consumption | Simple application occasions, debugging fixtures |
⚠Selection reminder: for high-frequency and high-speed continuous operation and production lines pursuing high-yield beats, cam-type variable-pitch sliding table is preferred; Low-speed, high-precision, multi-stage complex variable-pitch process, screw servo variable-pitch model is selected, and parameter adjustment is more precise and positioning is more accurate.
For the vertical installation scenario, the horizontal installation specification shall be strictly followed, and the special model with brake shall be selected in the vertical scenario, and the shaft body shall be fixed with the stop table at the same time, so as to avoid the impact and damage of the equipment caused by the sliding block due to the acceleration of gravity during braking.
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