Testing fixture for detecting timing angle of gear

• Main Authors: HE BINGCAI, ZHONG JIANXIN
• Format: Patent
• Language: Chinese; English
• Published: 09.07.2014
• Subjects: MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

The utility model discloses a testing fixture for detecting time angle of a gear. The testing fixture comprises a workbench, an inner bore positioning round-pin, a keyway positioning round-pin and a detection round-pin, wherein the inner bore positioning round-pin and the keyway positioning round-pin are arranged on the workbench and are respectively used for fitting with an inner bore and a keyway of a gear to be detected; and the detection round-pin is disposed on the workbench overlapping the circumference of a reference circle of the gear to be detected. The diameter d of the detection round-pin satisfies the following condition: d=E-2r*sin theta, wherein r is radius of the reference circle of the gear to be detected; E is external diameter of the detection round-pin respectively tangent to corresponding gear sides; and theta is timing angle tolerance of the gear to be detected. The testing fixture can be used as a standard component, can be used to test whether timing angle of gears is qualified in batch