A shaft leaves the furnace bent, and in this footage becomes a finished, measured part. The first action is not pressing but measuring: probes trace the turning shaft at two to three points for short parts, five to eight for long, and quantify the quench distortion. The press then works through the bends in order of severity, each stroke followed by a probe re-check that also compensates springback. Parts reaching the stored target are unloaded; those that do not are separated with data attached.
The advantage over manual straightening shows where hardening is involved: instead of an operator guessing how much a hardened bar will spring back, the machine iterates to a measured result, holding 0.02–0.05 mm TIR on automotive components and ≤0.02 mm on precision parts, with general work at 0.10–0.30 mm/m. The loop takes 20–90 seconds, consistently. Our guide to shaft runout and TIR connects these values to your drawings.
Plants hardening transmission, motor, and rotor shafts and hydraulic rods use this where straightening feeds finish grinding. Machines are specified to the real part mix — diameters Ø5–600 mm, lengths 100 mm to 12 m — with gantry loading and runout records as required, 380–480 V three-phase supply, and 60–120 day delivery. See the lineup of automatic shaft straightening machines.
Grinding stock calculations assume incoming runout: send post-quench readings with the print, and our desk shows how many strokes and which setup bring the part inside the grind allowance — ask for a free evaluation.
Quench distortion measured, then corrected bend by bend
Springback compensation via verification after each stroke
0.10–0.30 mm/m, 0.02–0.05 mm, ≤0.02 mm verified bands
Ø5–600 mm and 100 mm–12 m part capacity
Gantry loading and runout records optional; 60–120 days
SITE：
