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Clamp for machining steam passage of large blade of steam turbine

A technology of large blades and steam turbines, applied to metal processing machinery parts, manufacturing tools, metal processing equipment, etc., to achieve the effects of reducing manufacturing costs, improving pass rate, and reducing deformation

Active Publication Date: 2014-07-16
HARBIN TURBINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to meet the requirements of the new process plan, the present invention adopts a new processing method to process the steam passage of the large blade of the steam turbine with the four-axis and five-axis, and at the same time guarantees the processing accuracy, and further proposes a fixture for processing the steam passage of the large blade of the steam turbine

Method used

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  • Clamp for machining steam passage of large blade of steam turbine
  • Clamp for machining steam passage of large blade of steam turbine
  • Clamp for machining steam passage of large blade of steam turbine

Examples

Experimental program
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specific Embodiment approach 1

[0007] Specific implementation mode one: as Figure 1-3 As shown, a fixture for processing the steam passage of a large blade of a steam turbine according to this embodiment includes a machine tool connection plate 1, a fixed thimble 2, a fixture base 11, a movable adjustable thimble 12, a connecting shaft 13, and two second compression blocks 15 , a plurality of clamping seats 7 and a plurality of first pressing blocks 14, one end of the machine tool connection plate 1 is affixed to one end of the fixture chassis 11 through two connecting ribs 8, and the other end of the machine tool connection plate 1 is respectively provided with Connect the shaft 13 and the positioning key 10, the positioning key 10 is fixedly connected to the machine tool connection plate 1 through the screw 9, the fixed thimble 2 and the movable adjustable thimble 12 are respectively symmetrically inserted on the fixture chassis 11, the fixed thimble 2 is connected to the fixture chassis through the nut 3...

specific Embodiment approach 2

[0008] Specific implementation mode two: as Figure 1-3 As shown, each connecting rib plate 8 described in this embodiment includes a cuboid 8-1 and two reinforcing ribs 8-2, and the two reinforcing ribs 8-2 are arranged in parallel, and one end of each reinforcing rib 8-2 is respectively connected to the The outer side of 8-1 is fixed. Other compositions and connection methods are the same as those in Embodiment 1. Connect the machine connecting plate 1 and the fixture chassis 11 through the connecting rib plate 8, and provide sufficient installation space for the machine tool shaft, fixed thimble 7 and movable adjustable thimble 12, and the reinforcing rib 8-2 can effectively improve the connection rib plate 8. Stability, preventing fixture deformation, thereby improving the machining accuracy of the workpiece.

specific Embodiment approach 3

[0009] Specific implementation mode three: as Figure 1-3 As shown, the fixing method between the machine tool connecting plate 1 and the fixture chassis 11 and the two connecting ribs 8 in this embodiment is welding. Other compositions and connection modes are the same as those in Embodiment 1 or 2.

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Abstract

The invention belongs to a steam turbine blade clamp, and particularly relates to a clamp for machining a steam passage of a large blade of a steam turbine. The clamp for machining the steam passage of the large blade of the steam turbine aims to meet new process scheme requirements, a novel machining method used in cooperation with a four-axis device and a five-axis device is used for machining the steam passage of the large blade of the steam turbine, and meanwhile machining accuracy is guaranteed. The clamp for machining the steam passage of the large blade of the steam turbine comprises a machine tool connecting disc, a fixed ejector pin, a clamp base, a movable adjustable ejector pin, a connecting shaft, two second pressing blocks, a plurality of clamping bases and a plurality of first pressing blocks. The fixed ejector pin and the movable adjustable ejector pin are respectively and symmetrically inserted to the clamp base, the upper side and the lower side of the other end of the clamp base are respectively provided with one clamping base, the left side and the right side of the other end of the clamp base are respectively and symmetrically provided with the multiple clamping bases, and the upper surface of the other end of each clamping base is provided with a set screw. The clamp is used for machining the blade of the steam turbine.

Description

technical field [0001] The invention relates to a fixture for steam turbine blades, in particular to a fixture for processing steam passages of large blades of steam turbines. Background technique [0002] In recent years, with the continuous development of steam turbines, the production of steam turbines has gradually developed in the direction of large, precise and sharp, which requires continuous improvement of production technology. Among them, the processing method of large steam turbine blades (such as 1000mm, 1029mm, 1375mm, etc.) has also been improved accordingly. The existing fixtures can no longer meet the processing requirements of the new process method, resulting in low processing accuracy and easy deformation of the product. This requires There must be a new clamping mechanism to ensure production during processing. Contents of the invention [0003] In order to meet the requirements of the new process plan, the present invention adopts a new processing met...

Claims

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Application Information

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IPC IPC(8): B23Q3/06
CPCB23Q3/063
Inventor 王玉君康彦文李海鹏杨增纲王玉敏王海东郭长辉李铁成
Owner HARBIN TURBINE