The invention discloses a
lithium battery aluminum shell size detecting and positioning device and method, belongs to the technical field of
lithium battery accessory production, and aims to solve the problems that an existing detecting device is single in function and low in efficiency due to the fact that clamping needs to be conducted for multiple times, and an aluminum shell is prone to deformation. Four groups of clamping parts are symmetrically arranged on the support frame, and a bidirectional screw is used for driving a first clamping plate and a second clamping plate to synchronously clamp an aluminum shell from the inner side and the outer side, so that stable positioning is realized; the internal measuring part drives a distance sensor to rotate through a stepping motor and cooperates with an electric push rod to complete inner
cavity size measurement. The external measuring part adopts a similar structure to realize outer wall dimension detection, the support frame is driven by the driving motor to lift, internal and external dimension
continuous measurement under one-time clamping is realized, the device reduces positioning errors, avoids aluminum shell deformation, improves detection precision and efficiency, and is suitable for
lithium battery aluminum shell
production quality control.