Quick clamping and alignment method and fixture for milling arc segments of stationary blade grid

A technology of milling processing and static blade cascade, which is applied in the direction of manufacturing tools, metal processing equipment, metal processing machinery parts, etc. Easy operation, wide application range, convenient operation effect

Active Publication Date: 2014-10-08
DONGFANG ELECTRIC WUHAN NUCLEAR EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the many specifications of the arc section of the static cascade, and its structural characteristics of the arc section, there are major problems in actual processing: first, the posi

Method used

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  • Quick clamping and alignment method and fixture for milling arc segments of stationary blade grid
  • Quick clamping and alignment method and fixture for milling arc segments of stationary blade grid
  • Quick clamping and alignment method and fixture for milling arc segments of stationary blade grid

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Embodiment

[0042] Based on the idea of ​​fast clamping and aligning for the milling process of the arc section of the stationary blade cascade described above, the fast clamping and aligning fixture for the milling process of the arc section of the stationary blade cascade in this embodiment includes a plate body 1 (a square plate with a size of 1200mm×700mm×50mm ), 3 spacers A2 (a cylinder with a diameter of 60mm and a height of 50mm) and 3 height-adjustable spacers B3 (adjustable around 50mm in height) with fixed and consistent heights; The positioning mechanism 4 for positioning the grid arc segment 9 in the radial direction f and the side end surface c, the radial tightening mechanism 5 for radially tightening the stationary blade cascade arc segment 9, and the press-fitting mechanism for pressing and installing the stationary blade cascade arc segment 9 .

[0043] In this embodiment, the positioning mechanism 4 is mainly used for positioning the radial direction f and the side end s...

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Abstract

The invention discloses a quick clamping and alignment method and a fixture for milling arc segments of a stationary blade grid and belongs to the technical field of machining of steam turbines. According to the quick clamping and alignment method and the fixture for milling the arc segments of the stationary blade grid, the principle that three points form a plane is utilized, and quick clamping and alignment of the arc segments of the stationary blade grid are achieved through three-point locating and three-point auxiliary supporting; in the application process, adjustment is convenient, operation is easy, the application range is large, the defects that the arc segments of the stationary blade grid have many specifications, the locating accuracy of arc surfaces of the arc segments of the stationary blade grid in the actual machining process is hard to guarantee due to the structure of the arc segments, and a conventional clamping and alignment device is low in universality are overcome, and the alignment efficiency and accuracy are improved; meanwhile, in the method, a modular design thought is adopted for the corresponding clamping and alignment fixture, so that the universality of the device is greatly improved, and operation is convenient, fast and flexible.

Description

technical field [0001] The invention relates to a fast clamping and aligning method for milling the arc section of a stationary blade cascade, and belongs to the technical field of steam turbine processing. Background technique [0002] The arc section of the static cascade is assembled and welded by multiple cascades, and the arc sections of the static cascade are finally spliced ​​into a complete ring of static cascades. In order to ensure the assembly and positioning accuracy of the arc section of the stationary cascade, after the welding of the arc section of the stationary cascade is completed, the steam inlet side and the steam outlet side of the inner and outer shrouds of the arc section of the stationary cascade must be milled respectively. Due to the many specifications of the arc section of the static cascade, and its structural characteristics of the arc section, there are major problems in actual processing: first, the positioning accuracy of the arc surface of t...

Claims

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Application Information

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IPC IPC(8): B23Q3/00
CPCB23Q3/063
Inventor 孙挺巩丽王世涌肖波彭刚
Owner DONGFANG ELECTRIC WUHAN NUCLEAR EQUIP
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