Gripping device for gripping object with inner hole and gripping method

Abstract

The invention discloses a gripping device for gripping an object with an inner hole and a gripping method. The gripping device comprises a central shaft, a cone, a shaft sleeve, a bearing ring, at least two elastic claw bodies and a thrust spring, wherein the cone is arranged at one end of the central shaft, and the major-diameter end face of the cone is provided with a cone stop surface; the shaft sleeve is sleeved on the central shaft, and one end of the shaft sleeve is provided with a shaft sleeve stop surface abutted with the end face of the gripped object; the bearing ring is sleeved on the shaft sleeve; the at least two elastic claw bodies are connected with the bearing ring and are arranged between the cone and the bearing ring; the inner lateral surfaces of the claw parts of the elastic claw bodies are conical surfaces consistent with the cone, and the outer lateral surfaces of the claw parts are provided with claw stop surfaces; and the thrust spring is sleeved between the bearing ring and the shaft sleeve stop surface. The gripping method adopting the gripping device comprises the following steps: inserting the gripping device with the loosened central shaft into the hole of the gripped object; and applying an outward pull to the other end of the central shaft, wherein the conical surface of the cone is abutted with the conical surface of the claw part, and the gripping device clamps the gripped object when the central shaft is compacted.

Description

Technical field [0001] The invention relates to a method for grasping solid objects containing inner holes. Provide convenience for processing and manufacturing and material handling. Background technique [0002] The current handling method for solid objects using manipulators is generally to clamp the shape of the object, while for objects with through-holes, clamping in the hole can be used. Clamping in the hole usually adopts the way of expanding shaft. A camshaft is set in the center of the expanding shaft. The external force pushes the camshaft forward. The convex part of the cam expands the movable support outside the expansion shaft and supports the inner wall of the through hole to act as a clamp in the hole. Sustained effect. However, the camshaft clamping method has a complex structure, poor processing and assembly processability, and low overall strength, which is not suitable for clamping small diameter holes below 100 mm. Patent 952147.11.4 provides an inner hole...

AI Technical Summary

Problems solved by technology

However, the clamping method of the camshaft has a complex structure, poor processing and assembly process, and due to the low overall strength, it is not suitable for clamping small diameter holes below 100mm

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