How PinyiGear Inspects Precision Gears: Methods and Instruments

System introduces the inspection methods, instruments, and standard requirements for various gear accuracy indicators, helping customers understand ge

PinyiGear Inspection Equipment and Accuracy

  • Equipment Gear Measuring Center: Fp, Fα, Fβ
    • Accuracy: 0.1µm
  • Equipment Coordinate Measuring Machine: Dimensions, Geometric and Positional Tolerances
    • Accuracy: MPEE≤2.0µm
  • Equipment Vision Measuring Machine: Profile, Angle
    • Accuracy: Optical Non-Contact
  • Equipment Hardness Tester: HRC/HB/HV
    • Accuracy: -

Every production batch is accompanied by a full dimensional inspection report.

Inspection Items and Parameters

Pitch Deviation

Pitch deviation is measured on a Gear Measuring Center. The parameters recorded are Fp (total cumulative pitch deviation) and fp (single pitch deviation). Acceptance follows GB/T 10095 and DIN 3960.

Profile Deviation

A Gear Measuring Center is also used for profile checks, capturing Fα (total profile deviation), ffα (profile form deviation) and fHα (profile slope deviation).

Helix Deviation

Helix deviation is evaluated on the same Gear Measuring Center, with Fβ (total helix deviation), ffβ and fHβ as the inspection parameters.

Radial Runout

Radial runout is checked with a Gear Radial Runout Tester, recording Fr (radial runout).

Tooth Flank Roughness

Tooth flank roughness is measured using a Roughness Tester. The parameters are Ra and Rz, and ground flanks must meet Ra≤0.4µm.

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