Special spring stiffness automatic detection mechanism

Abstract

The invention provides an automatic detection mechanism for special spring rigidity. The automatic detection mechanism comprises a sorting device, a spring fixing screw, a spring delivery mechanism, a hook, a force sensor, a first stand column, a hinge chain, q guide rail, a lever, a shell, a second stand column, a push rod, a fixed supporting base, a push rod guide rail, a cam pack, a base, adjustable supporting legs, a stepping motor, a transmission gear set, a spring delivery slide way and a centripetal pushing force bearing. By the adoption of the automatic detection mechanism, system measurement errors are effectively eliminated; two working faces of an end face cam are stretched two times to replace a displacement sensor, the displacement error generated by two times of stretching is fixed, and therefore the accuracy of stretching displacement is ensured; protruding and concaved double circular arcs are adopted for transition of the stretching faces of the cam, and therefore movement is stable; lubrication is not needed for a transmission assembly, in this way, operation is easy, and the pressure of the assembly is low; friction is reduced, the movement is more flexible, and precision is higher; parts to be tested are automatically installed, detected and sorted.

Description

Technical field [0001] The invention relates to the field of equipment detection, in particular to a special spring stiffness automatic detection mechanism. Background technique [0002] The special spring has a semicircular hook at one end and a threaded end at the other end. The external thread is fastened to the spring and the internal thread cooperates with the corresponding screw to achieve tension. [0003] Although the existing detector can realize the rigidity detection of some fixed-shaped spring parts, it still has many shortcomings. The two ends of the tested spring have no special structure and shape, and they are flat ends without connecting other parts. The existing detection mechanism cannot eliminate the spring. The influence of different free lengths and load measurement errors on the stiffness measurement results; and the automatic installation of a spring with a ring at one end and a thread at the other end cannot be realized; the movement of the detection mechan...

AI Technical Summary

Problems solved by technology

[0003] Although the existing detector can realize the stiffness detection of some fixed-shaped spring parts, there are still many deficiencies. The two ends of the tested spring have no special structure and shape, and they are all flat ends without connecting other parts. The existing detection mechanism cannot eliminate the spring The influence of different free lengths and load measurement errors on the stiffness measurement results; and it is impossible to automatically install a spring with one end ring and one end threaded; the movement of the detection mechanism cannot be coordinated by the cam assembly; most of the currently used detection instruments are through displacement sensors or The CCD camera measures the displacement and uses an extra sensor, which is costly and complicates the operation; at the same time, the sorting work can only be done manually or through electromagnetic push rods, which wastes a lot of manpower and material resources

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