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Steam turbine rotor blade fitting machining method

A steam turbine rotor and processing method technology, applied to metal processing equipment, metal processing machinery parts, manufacturing tools, etc., can solve the problems of large equipment constraints, high processing costs, low efficiency, etc., achieve low processing accuracy, save production costs, The effect of improving economic efficiency

Inactive Publication Date: 2021-03-26
HARBIN TURBINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problems of large equipment constraints, high processing cost, low efficiency and low precision when using the existing steam turbine rotor blade mating processing method, and further provide a steam turbine rotor blade Mixing processing method

Method used

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  • Steam turbine rotor blade fitting machining method
  • Steam turbine rotor blade fitting machining method
  • Steam turbine rotor blade fitting machining method

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0057] Specific implementation mode one: combine Figure 1 to Figure 3 Describe this embodiment, a steam turbine rotor blade brush matching processing method in this embodiment, the method is realized by the following steps,

[0058] Step 1. Alignment and clamping of the first blade B:

[0059] Step 11. Placement of the first blade B:

[0060] First place the square iron 1 on the upper end surface of the three-axis linkage CNC machine tool table C according to the complementary twist angle of the blade B to be processed. The square iron 1 is located between the two T-shaped slots of the CNC machine tool table C to ensure that it is processed When the blade B leans against the square iron 1, the first surface to be processed B1, the second surface to be processed B2, the fifth surface to be processed B5 and the sixth surface to be processed B6 of the processed blade B are perpendicular to the X axis of the machine tool;

[0061] Step 12. Determination of the reference plane D...

specific Embodiment approach 2

[0076] Specific implementation mode two: combination figure 1 and figure 2 Describe this embodiment, each set of first clamping parts described in step 14 of this embodiment includes a first pressure plate 3, a first bolt 4 and a first nut 5, and when clamping a square iron 1, the The first pressure plate 3 is horizontally placed above the square iron 1, one end of the first pressure plate 3 is lapped on the upper end surface of the square iron 1, and the lower end of the first bolt 4 is vertically inserted on the CNC machine tool workbench from top to bottom In the T-shaped groove of C, the upper end of the first bolt 4 passes through the strip-shaped through hole of the first pressure plate 3 from bottom to top in the vertical direction and is screwed with the first nut 5, and the first pressure plate 3 is connected by the first nut 5 The square iron 1 is compressed on the workbench C of the CNC machine tool. With such an arrangement, when processing the blades, there is ...

specific Embodiment approach 3

[0077] Specific implementation mode three: combination figure 1 and figure 2 To illustrate this embodiment, each set of second clamping parts described in step 15 of this embodiment includes a second pressure plate 6, a second bolt 7 and a second nut 9, and when the blade B is clamped, the second The second pressure plate 6 is horizontally placed above the blade B, one end of the second pressure plate 6 is lapped on the non-processing surface E of the blade B, and the lower end of the second bolt 7 is vertically inserted on the CNC machine workbench C from top to bottom In the T-shaped slot of the second bolt 7, the upper end of the second bolt 7 passes through the strip-shaped through hole of the second pressure plate 6 from bottom to top in the vertical direction and is screwed with the second nut 9, and the second pressure plate 6 connects the blades through the second nut 9. B is compressed on the workbench C of the CNC machine tool. With such an arrangement, when proce...

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Abstract

The invention discloses a steam turbine rotor blade fitting machining method, and relates to the field of machining. The invention solves the problems that when an existing turbine rotor blade fittingmachining method is adopted for machining blade fitting, equipment constraint is large, machining cost is high, efficiency is low, and precision is low. The steam turbine rotor blade fitting machining method is achieved through the following steps that firstly, a first blade is placed; the reference surface of the first blade is determined and aligned; square iron is clamped; the first blade is clamped; the first blade is machined; machining of fitting of the first blade is completed; then, a second blade is clamped and machined; and finally, the clamping and machining operation of the secondblade is repeated to machine remaining blades till machining of all blades to be machined is completed. The method is used for the steam turbine rotor blade fitting machining.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a steam turbine rotor blade brush fitting processing method. Background technique [0002] The existing steam turbine rotor blade mating processing method is no longer suitable for the high-speed development of the manufacturing industry. When processing steam turbine rotor blade mating, there are the following disadvantages: [0003] 1) CNC milling machines (X, Y, Z, A) that require four-axis linkage have high requirements for equipment configuration; [0004] 2) Two types of high and low jaws and slope pads are required for clamping. The processing cost is high and the processing time is prolonged (it takes at least two weeks to make the tooling); [0005] 3) There are six surfaces that need to be processed when the blade is matched. The main processing process is as follows: After one surface is processed, the fourth axis of the rotating equipment needs to rotate the oth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23C3/18B23Q3/06
CPCB23C3/18B23Q3/062B23Q3/063
Inventor 杨凤林彬彬鲁航张红宇车利民杨庆仁陈国宏庄乾才
Owner HARBIN TURBINE
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