Involute bending device and its design method

Abstract

The invention provides an involute type bending device and a design method thereof. The device comprises a fixed part, a movable part, a bending body, a fixed outer contour device and a movable outer contour device, wherein the fixed outer contour device is fixedly installed on the fixed part, and the movable outer contour device is fixedly installed on the movable part. Before bending, the bending body is formed by a linear section or the linear section and an outer contour laminating section, a bending process is implemented in a way that the bending body is laminated with an outer contour, and the length sum of the linear section and the outer contour laminating section of the bending body in any position is the same constant in the bending process, i.e. the bending body is only bent without extension or compression in the bending process. According to different use occasions, in order to guarantee that the length sum of the linear section and the outer contour laminating section in any middle position of bending is the same constant, the outer contours of the fixed outer contour device and the movable outer contour device are designed as a quadratic curve, a cubic curve or an nth curve.

Description

technical field [0001] The invention relates to a bending technology with controllable bending process, which is suitable for the bending design and implementation of flexible bodies and semi-rigid bodies. The invention can effectively control various parameters (trajectory, bending radius, etc.) in the bending process, and prevent abnormal phenomena such as out-of-control bending radius, torsion, and knotting of flexible or semi-rigid bodies during the bending process. Background technique [0002] Bending of flexible bodies and semi-rigid bodies generally exists in various types of mechanisms, such as bending of cables, bending of ropes, bending of elastic belts, etc. Usually, in order to improve the reliability of bending and the performance of the bent parts, it is necessary to prevent abnormal phenomena such as out-of-control bending radius, torsion, and knotting during the bending process, which requires special design of the bending part. figure 1 A schematic diagram...

AI Technical Summary

Problems solved by technology

[0004] 1. The cable is in a relaxed state before and after bending, and its mechanical resistance is poor (such as in a micro-vibration environment)

[0005] 2. Multiple bending of the cable cannot guarantee that the bending radius is the same value, that is, the bending radius is a random number, so the bending scheme is difficult to guarantee the electrical performance of the cable (usually the cable has a minimum bending radius requirement)

[0006] 3. During the bending process, the cable is prone to twisting or even knotting under the interference of external loads, which seriously affects the performance of the cable and even affects the retracting function of the mechanism

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