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Double Rocker Adaptive Centering Fixture

A centering fixture and self-adaptive technology, applied in the direction of manufacturing tools, workpiece clamping devices, etc., can solve the problems affecting the concentricity and cylindricity of workpieces, etc., and achieve the effect of increasing the diameter range of adapting to pipe piles and efficient clamping operations

Inactive Publication Date: 2015-10-28
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the rotation center of the revolving work tool relative to the pipe pile is not concentric with the pipe pile axis, it will affect the concentricity and cylindricity of the workpiece

Method used

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  • Double Rocker Adaptive Centering Fixture
  • Double Rocker Adaptive Centering Fixture
  • Double Rocker Adaptive Centering Fixture

Examples

Experimental program
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Embodiment Construction

[0022] like figure 1 — figure 2 As shown, the present invention comprises: frame 1, two driving hydraulic cylinders 2, two double rocker mechanisms 3; And an arch bridge-shaped parallel frame formed by connecting several equal-length mandrels 1.3; in the arch bridge-shaped space between the main plate 1.1 and the auxiliary plate 1.2 of the frame 1, two driving hydraulic cylinders 2 and double rockers are arranged Mechanism 3; two hydraulic cylinders 2 are symmetrically arranged on both sides of the frame 1, and the two double rocker mechanisms are parallelogram mechanisms, which are symmetrically arranged on both sides of the frame; wherein, the top of the cylinder driving the hydraulic cylinder 2 is connected to the machine frame The frame 1 is hinged as a whole, and the piston rod end of the drive hydraulic cylinder 2 and the active rocker 3.1 in the double rocker mechanism 3 and the living hinge of the connecting rod 3.2 are combined and hinged as one. The other end of th...

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Abstract

A double-rocker self-adaptive centering clamp is provided with a rack, wherein a driving hydraulic cylinder and a double-rocker mechanism are arranged on the rack, the top end of the driving hydraulic cylinder body and the rack are hinged into a whole, the end of a piston rod of the driving hydraulic cylinder, and one end of a driving rocker of the double-rocker mechanism are combined with a connecting rod in a hinged mode to form a whole. The other end of the driving rocker and the rack are hinged into a whole. The connecting rod is combined with a driven rocker in a hinged mode to form a whole. When used for machining or maintaining a tubular pile, the double-rocker self-adaptive centering clamp not only can clamp a workpiece to be clamped and make no displacement generated between the clamped workpiece and the clamp, but also can achieve multi-point clamping on a cylindrical workpiece and ensure that a rotating operating machine tool can operate concentric with the clamp all the time when making peripheral operation along a circular guide rail fixedly connected with the clamp concentrically, concentric operation can be performed on the cylindrical workpieces different in diameter, and the range of diameters for adapting to the tubular piles is widened. In the clamping process, self-adaptive centering is performed, adjusting and correcting are not needed, and the clamping operation can be performed conveniently, fast and efficiently.

Description

technical field [0001] The invention relates to an outer circle centering fixture, in particular to a fixture suitable for using the outer circle of a cylindrical piece as a clamped element, which can achieve convenient, fast and efficient circumferential cutting, testing, welding and spraying of cylindrical pieces with different diameters. Double rocker self-adaptive centering fixture for , grinding and other operations. It belongs to the field of marine engineering technology. Background technique [0002] In order to meet the requirements of clamping pipes, at present, the typical pipe clamping methods are as follows: [0003] 1. "V" block positioning and clamping mechanism [0004] The mechanism mainly includes: a "V"-shaped support block and a clamping arm driven by a hydraulic cylinder, wherein the "V"-shaped support block belongs to the supporting device of the clamping mechanism. The block rides on the upper semicircle of the cylinder, and then the hydraulic cylin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B11/00
Inventor 李志刚王立权张海涛弓海霞何杨郭士清姜瑛王刚钟文军刘金涛
Owner CHINA NAT OFFSHORE OIL CORP
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