Equipment and method for milling inner surface of bent pipe

A technology of milling processing and inner surface, which is applied in the direction of metal processing equipment, milling machine equipment, milling machine equipment details, etc., can solve the problems of low precision and low transmission efficiency, and achieve the effect of high precision, stable transmission and consistent cutting state

Inactive Publication Date: 2011-10-05
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention adopts the mode of guide rail guidance and gear transmission, which has stable and reliable transmission, high efficiency and high precision, overcomes the defects of low transmission efficiency and low precision of the existing swingable power boring equipment, and realizes Surface Machining

Method used

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  • Equipment and method for milling inner surface of bent pipe
  • Equipment and method for milling inner surface of bent pipe
  • Equipment and method for milling inner surface of bent pipe

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Embodiment Construction

[0022] The specific implementation of the present invention is described in detail in conjunction with the accompanying drawings and technical solutions. The equipment and method are implemented on typical main pipe parts, and the processing of the inner surface of the arc section is completed. The main pipeline is a large thick-walled pipeline, weighing about 11 tons. There are two nozzles at a certain angle on the outer surface, and the straight and arc sections at both ends are connected tangentially. The pipe size is Φ785mm in inner diameter, Φ965mm in outer diameter, the bending angle of the arc section is 56.4°, and the lengths of the straight sections at both ends are 2560.3mm and 1234.2mm respectively. Such as figure 1 As shown, the processing equipment is based on the equipment bed, including the equipment bed, columns, support rods, clamping devices, rotary milling devices, worktables and guide rails. There are guide rails installed on the equipment bed, and a workt...

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Abstract

The invention belongs to the field of large-scale heavy load part processing and relates to equipment and a method for milling the inner surface of a bent pipe. The equipment comprises an equipment machine body, a vertical column, a supporting rod, a clamping device, a revolution milling device, a workbench and a guide rail. The machining of the inner surface of the arc line section of the bent pipe is realized in a mode of guide rail leading matched with gear transmission by matching the circular motion along the guide rail and the revolution motion around a slide block, and through the screw feed cutting motion along the bus of the bent pipe under the drive of a servo motor. The equipment can perform transmission stably and reliably; the mechanism has a simple design; the control mode is simple and direct; the cutting state is stable; the cutting impact load is small; and the surface quality, the efficiency and accuracy are high. The equipment and the method are suitable for processing the inner surfaces of the arc line sections of various large-and-medium-sized bent pipe parts.

Description

technical field [0001] The invention belongs to the field of large-scale heavy-duty parts processing, and relates to a milling processing equipment and method for the inner surface of an elbow. Background technique [0002] Bending pipe parts play a very critical role in the engineering field, and some bending pipe parts need to be mechanically cold-worked to ensure their quality. The coolant main pipe in a nuclear power plant is a large thick-walled pipe connecting the reactor pressure vessel and the steam generator, and is one of the key components of the nuclear power plant. At present, the third-generation AP1000 nuclear power technology introduced in my country adopts integral forging manufacturing, and the main pipe itself has no welds, which reduces the workload of in-service inspections and improves the service life. The processing route of the third-generation main pipeline is forging-machining-bending-finishing. Defects on the inner and outer surfaces of the main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23C3/16B23Q5/22
Inventor 王续跃孙建立高航刘巍杨连文
Owner DALIAN UNIV OF TECH
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