Double-leaf spring flexible joint without axis drift

Abstract

The invention discloses a double-leaf spring flexible joint without axis drift. The joint is assembled through integrated machining or split machining of a linear cutting machine; the middle of a left connection rod is of an arc structure and the two ends of the left connection rod are straight-line segments, and a right connection rod is of a cylindrical structure; an upper leaf spring and a lower leaf spring are in the shapes of symmetrical arcs and symmetrically arranged at the two ends of the right connection rod; the arc-structure ends of the upper leaf spring and the lower leaf spring are connected with the left connection rod; and the middles of the left connection rod, the upper leaf spring, the lower leaf spring and the right connection rod form a closed hollow area. The structure ingeniously realizes no drift of a rotation axis of the flexible joint during a rotation process by using the two completely same arc-shaped leaf springs; the double-leaf spring flexible joint is low in structurally internal stress, thus expanding a rotation range, prolonging a fatigue life, and enhancing the bearing capacities of the connection rods and the structural stiffness in non-functional directions; and the double-leaf spring flexible joint disclosed by the invention is simple in structure, convenient to integrally machine by using the linear cutting machine to avoid introduction for assembly errors, and also capable of being assembled through split machining.

Description

technical field [0001] The invention relates to a compliant joint, in particular to a double-leaf spring type shaftless compliant joint. Background technique [0002] Compliant joint is a structural form of kinematic pair that uses the elastic deformation of materials to generate relative motion between adjacent rigid rods under the action of external force or moment. It is very different from the structure of traditional rigid kinematic pair. different. A compliant joint is a typical compliant element in a compliant mechanism. Compared with traditional rigid joints (mechanisms), compliant joints and compliant structures have many advantages: (1) no gap and friction, and higher precision movement can be realized; (2) free from wear and improve life; (3) free from friction (4) It can be designed and processed in an integrated (or integrated) manner; (5) It can effectively relieve the impact without collision during high-speed movement. It can be used in micro-positioning, ...

AI Technical Summary

Problems solved by technology

The compliant joint adopts a hollow design, which is improved to a leaf spring-like design based on the publication number CN2459740Y, but the internal stress of the longitudinal ribs and transverse ribs is still large, and the actual effective rotation angle is not large

Because this design is essentially the same as the design in the publication number CN2459740Y, the shaft drifts seriously during the rotation process

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