Thin-walled cylinder precise shape control equipment

A thin-walled cylinder and precise technology, applied in the direction of metal processing equipment, forming tools, manufacturing tools, etc., can solve the problem of difficult to achieve precise shape control of the cylinder, thinning the wall thickness of the cylinder, unable to meet product size and performance requirements, etc. question

Pending Publication Date: 2020-10-27
BEIJING RES INST OF MECHANICAL&ELECTRICAL TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned shape correction methods are all mechanical shape correction methods, which can basically meet the requirements for workpieces with small structural size, small deformation degree, and low overall precision requirements.
However, for super-large-diameter thin-walled cylindrical parts, due to the existence of principle defects such as irregular de...

Method used

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  • Thin-walled cylinder precise shape control equipment
  • Thin-walled cylinder precise shape control equipment
  • Thin-walled cylinder precise shape control equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1. The thin-wall cylinder precision shape control equipment provided by the preferred embodiment of the present invention includes a precision control shape inner tire mold 1, a hydraulic push cylinder 2, a guide device 3, a bracket 4, a rotating support platform 5 and a control system, and the control system is mainly monitored by sensors The hydraulic position and action are controlled by PIC.

[0038] Depend on figure 1 , image 3 As shown, the precision-controlled inner tube mold 1 is composed of multiple sets of high-rigidity inner tube molds 11. Its function is to use the shrinkage effect during the cooling process of the high-temperature workpiece to limit the thin-walled cylindrical part by controlling the position of the membrane surface of the inner tube mold 11 with a specific radian. The range of shrinkage to make it meet the size requirements of the workpiece. In this embodiment, the tire membrane surface is composed of 8 groups of 24 (can also b...

Embodiment 2

[0046] Example 2. The front and rear movement of the inner tube mold is used to control the shape of the super large thin-walled cylindrical part.

[0047] Specifications: The inner diameter of the cylinder is 12000-12500mm, the wall thickness of the cylinder is 70-80mm, and the height of the cylinder is 4000mm.

[0048] Finishing accuracy: cylinder roundness is not greater than ±2.5mm.

[0049] Calibration process:

[0050] By controlling the hydraulic push cylinder 2, the inner tube mold 11 is moved to the center of the rotating support table 5, and the diameter is the arc position of the workpiece size, and the rotating rotating support table 5 is rotated, and the position of the inner tube mold 11 is detected by a size detection device to make the roundness error Not more than ±1.0mm.

[0051] Use a special lifting tool to hoist the red-hot cylindrical workpiece after ring rolling to the thin-walled cylindrical precision control equipment, and use the size detection dev...

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PUM

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Abstract

The invention provides thin-walled cylinder precise shape control equipment. The equipment comprises a rotary supporting table used for supporting a workpiece in the shape correcting process and rotating the workpiece in the cooling shrinkage process, precise shape control inner tube molds uniformly distributed around the circle center of the rotary supporting table and are used for providing an arc surface required during shape control and shape correction force conduction during working, a hydraulic push cylinder which is connected with the precise shape control inner tube molds and is usedfor precise precise shape control inner tube mold micro-distance movement, a guide device which is arranged on a piston rod of the hydraulic push cylinder and is used for guiding the axial movement ofthe hydraulic push cylinder and positioning the guide direction, and a support which is annularly mounted on the ground by taking the circle center of the rotary supporting table as the center and isused for fixing the hydraulic push cylinder and the guide device. The equipment is used for precisely controlling the shape of the ultra-large-diameter thin-walled cylinder, the shape control precision is high, the wall thickness is not reduced, the residual stress after precise shape control is small, and subsequent procedures can be simplified, and meanwhile, the taper of an inner tube mold isadjustable and can adapt to precise shape control of workpieces such as conical barrels.

Description

technical field [0001] The invention relates to a shape-controlling device for a thin-walled cylinder, in particular to a precise shape-controlling device for a super-large-diameter thin-walled cylinder. Background technique [0002] Thin-wall cylindrical parts with super large diameter are widely used in petroleum and petrochemical, marine equipment and other fields, and the processing methods can be carried out by ring rolling and heat treatment. During the cooling process after ring rolling and heat treatment, the cylinder will be irregularly deformed, so that the size of the workpiece cannot meet the use requirements. The commonly used orthopedic methods for thin-walled cylinders include press point pressure correction, four-roller rounding machine shape correction and expansion shape correction. [0003] The above-mentioned shape correction methods are all mechanical shape correction methods, which can basically meet the requirements for workpieces with small structura...

Claims

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Application Information

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IPC IPC(8): B21D3/00B21D37/10B21D37/16B21C51/00
CPCB21C51/00B21D3/00B21D37/10B21D37/16
Inventor 李贤君刘荣
Owner BEIJING RES INST OF MECHANICAL&ELECTRICAL TECH
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