Method and device for machining inner bending holes of main nuclear power pipeline bend on horizontal boring machine

A technology of horizontal boring machine and main pipeline, which is applied to the parts of boring machine/drilling machine, boring/drilling, metal processing equipment, etc., to achieve the effects of reducing procedures, ensuring processing quality, and improving labor intensity and environmental conditions

Active Publication Date: 2010-10-06
SICHUAN SANZHOU SCMP NUCLEAR EQUIP MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] The purpose of the present invention is to overcome the shortage of manual grinding of the inner hole of the elbow, provide a kind of in-sleeping machine that ensures product quality, improves the dimensional accuracy of the inner hole of the elbow; shortens the construction period, reduces the labor intensity of workers, and improves efficiency; improves working conditions. Method for Machining Bending Inner Hole of Elbow of Nuclear Power Main Pipe on Type Boring Machine

Method used

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  • Method and device for machining inner bending holes of main nuclear power pipeline bend on horizontal boring machine
  • Method and device for machining inner bending holes of main nuclear power pipeline bend on horizontal boring machine
  • Method and device for machining inner bending holes of main nuclear power pipeline bend on horizontal boring machine

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Embodiment 1

[0054] Figure 1 to Figure 5 A schematic structural diagram of the device for processing the inner hole of a 90° long elbow in Example 1 is given. see Figure 1 to Figure 5 , the device of this embodiment has an arc-shaped cutter housing 2 mounted on the square head 1 of the boring machine at one end, and one end of the driving bevel gear shaft 4 in the power transmission and steering mechanism 3 in the arc-shaped cutter housing is mounted on the taper handle 5 of the boring machine and passed through The taper handle of the boring machine is driven by the main shaft 5 . There is support 7 with bearing in the other end of the arc-shaped cutter housing, and one end of boring bar 8 stretches into the support and is integrated with the driven bevel gear shaft 9 in the power transmission and steering mechanism so as to be driven by the power transmission and steering mechanism. The curved shell has a bending radius of 1300 mm. Boring bar one end is equipped with cutter head 10,...

Embodiment 2

[0062] Figure 4 ~ Figure 6 A schematic structural diagram of the device in Example 2 is given. The device in Embodiment 2 is basically the same as that in Embodiment 1, except that the boring bar is a straight boring bar directly installed in the taper hole of the main shaft. Reinforcing sleeve 24 is housed on the boring bar. This device can process the inner holes of short elbows such as 28°22′, 40°, 50°, etc.

[0063] The method steps for processing the inner holes of short elbows such as 28°22′, 40°, 50°, etc. are as follows:

[0064] (1) Install the rotary table on the boring machine table, place the elbow of the workpiece on the rotary table, make the center of the bending radius of the elbow coincide with the center of rotation, align and compress.

[0065] (2) The boring bar is installed on the main shaft of the boring machine, the boring bar and the cutter head rotate, and the cutter head is used to draw a circle with the end face of the elbow to find the circle. T...

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Abstract

The invention discloses a method for machining inner bending holes of a main nuclear power pipeline bend on a horizontal boring machine, which comprises the following steps of: (1) manufacturing a base and a rotary table, wherein the rotary table is arranged on a shaft of the base and can rotate around the shaft; (2) arranging a boring bar with a cutter head on a main shaft of the boring machine; (3) arranging the base and the rotary table on a boring machine workbench, placing a work piece bend on the rotary table, and transversely aligning and pressing tightly the work piece bend; (4) rotating the boring bar and the cutter head, making circles with a tool nose of the cutter head and a scribing circle of the end face of the bend, making the boring bar vertical to the end face of the bend, fixing the axial position of the boring bar, rotating the boring bar and the rotary table, and stopping the rotation of the rotary table when the inner hole wall of the bend is about to cling to the boring bar; and (5) by the similar method, reversing the head to machine the inner hole at the other end of the bend and then finishing the machining. The method of the invention can ensure the quality of the product, improve the size accuracy of the inner holes of the bend and improve efficiency. The invention also provides a device for machining the inner bending holes of the main nuclear power pipeline bend on the horizontal boring machine.

Description

Technical field: [0001] The present invention is related to the method and device for processing the curved inner hole of the pipe elbow, especially directly applied to boring the curved inner hole of the 90°, 50°, 40°, 28° 22' elbow of the main pipeline of nuclear power, and can also be bored Other similar methods and devices for bending bores are related. Background technique: [0002] The elbows of nuclear power main pipelines not only have high internal quality requirements, but also their chemical composition, mechanical properties, crystal phase, coloring inspection, super-detection, and radiation detection must meet the French RCCM standard; the requirements for geometric dimension accuracy are also very high; each section of the elbow, The wall thickness varies at each point. The RCC-M (2000 version + 2002 supplement) standard has strict regulations on the roundness, flatness, roughness and wall thickness of each point of the outer circle and inner hole of the main ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B41/00B23B47/00B23B47/18
Inventor 薛恒信薛丹粟建宏潘峰
Owner SICHUAN SANZHOU SCMP NUCLEAR EQUIP MFG CO LTD
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