Inner hole clamping device

Abstract

The invention provides an inner hole clamping device. The inner hole clamping device can solve the problem that a traditional spring sleeve cannot conduct reliable clamping or picking on small-inner-hole, large-dead-load and long-inner-hole workpieces, and accordingly the industrial machine automatic production requirement can be met. The inner hole clamping device comprises a core bar and a drivemechanism, the core bar is provided with an axial center through hole, the axial center through hole is internally provided with a pull rod in a penetrating manner, the pull rod can move in the axialdirection, the front end of the pull rod is connected with a pulling block, and the rear end of the pull rod is connected with the drive mechanism. Three sliding grooves which horizontally extend inthe axial direction and are parallel are evenly distributed in the peripheral face of the front end of the core bar in the circumferential direction. The groove bottom faces of the sliding grooves arewedge-shaped groove faces with the radial groove depths gradually increased from back to front. Each of the three sliding grooves internally contains a sliding claw, each sliding claw is provided with a wedge-shaped inclined face which is in sliding fit with the corresponding wedge-shaped groove, and the front end of each sliding claw is fixedly connected with the pulling block.

Description

technical field [0001] The invention relates to the field of fast picking devices for parts of industrial robots, in particular to an inner hole clamping device. Background technique [0002] Most of the existing clamping devices for inner hole parts use spring sleeves, which produce radial elastic deformation by applying a large tension to the spring sleeves so as to be tensioned with the inner holes of the parts to achieve clamping movement. Purpose; it has the advantages of low cost and large tension force; however, the tension and release stroke range of the spring sleeve is small, and it requires a large driving force, especially for small inner holes, large self-weight and length For parts with long inner holes, traditional spring sleeves cannot reliably perform clamping operations. Often, the workpiece is easy to fall off when clamping, and the spring sleeve is easy to get stuck with the inner hole of the workpiece when it is released. Therefore, it cannot meet the re...

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the present invention provides an inner hole clamping device, which can solve the problem that the traditional spring sleeve cannot reliably clamp and pick up small inner holes, large self-weight, and long inner hole workpieces, so as to meet the needs of industrial robots. Requirements for automated production

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