A Fatigue Fracture Blanking Machine for Circumferential Cyclic Loading of Workpieces with Unmoved Fatigue Loads

Abstract

The invention discloses a fatigue break feeding machine for fixed workpiece fatigue load circumferential cyclic loading. A loading frequency regulating and controlling mechanism comprises a main shaftand a rotating chuck connected with the main shaft; a fatigue load loading mechanism comprises a first servo motor and a lead screw which are arranged on the rotating chuck, the first servo motor drives the lead screw to rotate, a nut is vertically installed on the lead screw, and a feeding die is movably installed on the nut; a workpiece clamping mechanism comprises a feeding opening and a discharging opening, the locations of the feeding opening and the discharging opening are separately provided with clamping assemblies, second servo motors of the clamping assemblies drive two-way lead screws to rotate, and each two-way lead screw is provided with two clamping pieces. A fatigue break principle is used, so that multiple fatigue crack sources are generated at the prefabricated stress gaps of rod and tube materials to enable the crack to quickly extend, and quick feeding of the rod and tube materials is achieved; and sections are kept smooth, end portions are free of deformation, wherein the fatigue load loading mechanism controls the displacement of the lead screws by the servo motors, and radial real-time adjustment of displacement amount is achieved.

Description

technical field [0001] The invention belongs to the technical field of blanking machines, and in particular relates to a fatigue fracture blanking machine which is subjected to circumferential cyclic loading of workpieces without fatigue loads. Background technique [0002] The blanking of metal rods and tubes is widely used in the preparation processes of cold extrusion, die forging, metal chain pins, rolling bearing rollers, pin standard parts, shaft parts and bearing parts, etc., and in these blanking processes , The amount of blanking is huge. However, the traditional shearing, sawing and laser cutting and other emerging cutting and blanking methods have problems such as low material utilization rate, large blanking force, low production efficiency, high energy consumption, and poor section quality to varying degrees, which do not meet the requirements of green technology. manufacturing and precision manufacturing requirements. [0003] The traditional blanking methods...

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