One-way connecting rod type eccentric wheel pressing plate clamping structure

Abstract

The invention provides a one-way connecting rod type eccentric wheel pressing plate clamping structure. When the one-way connecting rod type eccentric wheel pressing plate clamping structure is used for clamping a workpiece, an eccentric wheel is rotated in a clockwise direction by a handle, and then the eccentric wheel jacks a force transmission bolt which is tangent to the eccentric wheel. One end of a lever is rotated round a pin shaft in a clockwise direction due to the fact that the force transmission bolt is fixedly connected with the lever, the other end of the lever moves down and drives a movable hook plate to move down. Due to the fact that the movable hook plate firmly contacts with a fixed hook plate, the fixed hook plate can enlarge downward directional clamping force through the lever, and the clamping workpiece is clamped by the clamping force through a pressing plate. Locking state of a locking mechanism is guaranteed by the downward directional clamping force of the movable hook plate and the fixed hook plate. When the clamping workpiece is loosened, the eccentric wheel is rotated in an anti-clockwise direction by the handle, the eccentric wheel drives the force transmission bolt to move down round the pin shaft of the lever, and although the movable hook plate contacts with fixed hook plate, the movable hook plate and the fixed hook plate are already separated from each other at present. The movable hook plate is rotated in a clockwise direction by a hand, a connecting support rod constricts a locking spring, and thereby the fixed hook plate is separated from the movable hook plate. The pressing plate is rotated in an anti-clockwise direction and then the pressing plate is separated from the workpiece. The one-way connecting rod type eccentric wheel pressing plate clamping structure has the advantage of being capable of achieving self-locking and clamping function, simple in structure, convenient to operate, large in clamping force. The clamping force which is greater than 300 Newton is produced by lightly rotating the handle.

Description

technical field [0001] The invention relates to a tooling fixture, in particular to a one-way link type eccentric wheel pressing plate clamping structure. Background technique [0002] The power sources of fixtures and fixtures required for small-batch automobile manufacturing are all manual. Manual clamping is the simplest and most primitive form of clamping device. It has the following advantages: ①The source of power can not be limited by the conditions of the workshop equipment, the structure is simple, and the maintenance is convenient. ② The operator can change the clamping force within a certain range according to the actual needs, so as to obtain the most suitable clamping force. However, manual clamping devices also have some disadvantages. For example, the most commonly used manual clamp structures are manual screw clamps and manual lever hinge clamps. The disadvantages are: the clamping force of the manual screw clamp is too small <300N and the stroke of the...

AI Technical Summary

Problems solved by technology

But the manual clamping device also has some disadvantages

For example, the most commonly used manual clamp structures are manual screw clamps and manual lever hinge clamps. The disadvantages are: the clamping force of the manual screw clamp is too small <300N and the stroke of the screw per revolution is small, the action is slow, and the efficiency is low. lower

It is difficult to realize self-locking of the manual lever hinge clamp and takes up a lot of space, and the manufacturing cost is high

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