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Toggle-lever reinforcement bidirectional-clamping hydraulic fixture based on hydraulic cylinder

A two-way clamping, hydraulic clamp technology, applied in the field of machinery, can solve the problems of poor piston rod rigidity, affecting service life, uncompact structure, etc., to achieve the effects of small friction loss, extended service life and balanced structure

Inactive Publication Date: 2014-07-02
DALIAN WATE HEAVY DUTY MACHINE TOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the design of hydraulic fixtures often chooses to use rod-piston hydraulic cylinders, but this structure has obvious disadvantages. The size of the hydraulic cylinder axis is too large and the structure is not compact; due to the poor rigidity of the piston rod, so in The support element is designed under the piston rod, resulting in a complex structure; when clamping, the reaction force of the workpiece on the pressure plate will generate a non-negligible bending moment on the piston rod, which will affect their service life

Method used

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  • Toggle-lever reinforcement bidirectional-clamping hydraulic fixture based on hydraulic cylinder

Examples

Experimental program
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Embodiment 1

[0011] A cylindrical radial hole is processed on the rodless piston (6), and the cylindrical roller (5) fits in the radial hole with an appropriate clearance. One end of the hinge rod I (3) is connected with the cylindrical pulley (5), and the other end It is connected with the lever type pressing plate I (1), one end of the hinge rod II (4) is connected with the cylindrical pulley (5), and the other end is connected with the lever type pressing plate II (2). When the reversing valve (8) works in the left position, the hydraulic oil (7) enters the left chamber of the hydraulic cylinder, and the oil returns from the right chamber; the piston (6) moves to the right under the action of the liquid pressure, and the hinge rod I (3) and the hinge The lever II (4) drives the lever type pressing plate I (1) and the lever type pressing plate II (2) to swing around the fixed hinge shaft (9). The axial force of the hydraulic oil (7) acting on the rodless piston (6) is increased by the an...

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Abstract

A toggle-lever reinforcement bidirectional-clamping hydraulic fixture based on a hydraulic cylinder mainly comprises lever pressure plates, two toggles, a cylindrical roller, a rodless piston, hydraulic oil, and a reversing valve. The fixture is characterized in that the rodless piston is provided with a cylindrical radial hole, the cylindrical roller is fitted into the radial hole through an appropriate clearance, one end of the toggle I is connected with the cylindrical roller, the other end of the toggle I is connected with the lever pressure plate I, one end of the toggle II is connected with the cylindrical roller, and the other end of the toggle II is connected with the lever pressure plate II. The toggle-lever reinforcement bidirectional-clamping hydraulic fixture based on the hydraulic cylinder has the advantages that force transmission efficiency is improved, service lives of related moving parts are prolonged, the fixture is balanced and simplified structurally, a bidirectional floating function is achieved by placing the cylindrical roller into the cylindrical radial hole, and friction loss is low.

Description

technical field [0001] The invention belongs to the field of machinery, and in particular relates to a hydraulic cylinder-based hinge rod-lever booster bidirectional clamping hydraulic fixture. technical background [0002] Hydraulic transmission fixtures, especially medium-sized fixtures, are widely used in modern manufacturing. At present, the design of hydraulic fixtures often chooses to use rod-piston hydraulic cylinders, but this structure has obvious disadvantages. The size of the hydraulic cylinder axis is too large and the structure is not compact; due to the poor rigidity of the piston rod, so in The support element is designed under the piston rod, resulting in a complex structure; when clamping, the reaction force of the workpiece on the pressure plate will generate a non-negligible bending moment on the piston rod, which will affect their service life. Using the amplification effect of the mechanical booster mechanism, combined with the hydraulic transmission te...

Claims

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Application Information

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IPC IPC(8): B25B11/00
CPCB25B11/00
Inventor 高永明
Owner DALIAN WATE HEAVY DUTY MACHINE TOOL
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