This video shows a toothed rack bar being straightened with laser detection rather than contact gauges. A non-contact laser sensor scans the bar’s straightness along its full length while the rack rests on protected supports, mapping bend without touching the tooth flanks; the press then corrects each deviation and the laser re-verifies the result in the same automatic cycle.
Because tooth surfaces must stay flawless for smooth steering and linear motion, supports and anvils use soft, tooth-clearing tooling that never clamps on the gear teeth. The closed-loop process holds long, slender racks well inside drawing tolerances; for how runout and straightness are quantified, see our note on TIR and straightness measurement.
Steering racks, gear racks for machine tools and lifting, and linear-motion toothed bars all suit this machine, which replaces hand straightening that is 5–10 times slower and far less consistent. Explore the automatic straightening range for the model matching your bar length. Because racks are long and slender, the bed supports the bar at close intervals to limit gravity deflection during measurement, while the laser reference stays independent of the machine frame for repeatable readings.
For a tailored proposal, request a quote with part drawings and annual output, or book a factory visit in Shandong to see machines in build.
Non-contact laser detection scans straightness without touching teeth
Soft, tooth-clearing tooling protects gear flanks from damage
Closed-loop press-and-recheck with automatic bend mapping
For steering racks, machine-tool racks and linear-motion bars
5–10 times faster and more consistent than hand straightening
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