The invention belongs to the technical field of mechanical accessory production, and particularly relates to a production clamping device for mechanical accessories. The production clamping device comprises a bottom plate, bases are symmetrically and fixedly arranged on the bottom face of the bottom plate, a first air cylinder is installed in the middle of the bottom face of the bottom plate, an output shaft of the first air cylinder penetrates through the bottom plate and extends to the top of the bottom plate, connecting rods are symmetrically installed on the outer side wall of a telescopicshaft of the first air cylinder, two abutting plates clamp a mechanical accessory, each abutting plate has good deformation force due to the elastic effect generated by multiple compression springs inside the corresponding containing cavity so that the abutting plates can change along with the outline of the accessory, and the abutting plates can be attached to the accessory easily; meanwhile, the friction force between the abutting plates and the accessory is increased through connecting plates and multiple grooves, the stability and firmness are enhanced, and the accessory is not prone to slide and falling; and under the action of first springs and second springs, the abutting plates have certain rebound resilience, so that clamping is prevented from being too tight, damage to the accessory is reduced, and protection is enhanced.