The invention discloses an optical
zoom cam curve detection device and method, and relates to the field of optical
system detection. The device comprises an operation platform, a
cam shaft transmission mechanism,
linear motion sliding sets, anti-backlash spring assemblies, a
grating ruler detection
assembly, a
potentiometer detection
assembly, limiting switch assemblies and an
electric control box, the
cam shaft transmission mechanism is fixed to the middle of the operation platform, and the two sets of
linear motion sliding sets are installed on the two sides of the cam shaft transmission mechanism; the two sets of anti-backlash spring assemblies are arranged on the two sides of the cam shaft transmission mechanism, the two sets of
grating ruler detection assemblies are installed on the outer sides of the two sets of
linear motion sliding sets respectively, and the two sets of
potentiometer detection assemblies are installed between the linear motion sliding sets on the two sides of the operation platform and the
grating ruler detection assemblies respectively. There are two sets of limiting switch assemblies, the limiting switch assemblies are installed on the two outer sides of the operation platform and the
electric control box is installed on the operation platform. According to the device and the method, the
camshaft machining curve is automatically collected and fitted in the whole process and is intelligently compared with theoretical curve data, and the
machining error of the whole curve is directly calculated.