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Special blade steam passage milling clamp for five-axis numerical control machine tool and machining method

A technology for CNC machine tools and blade air passages, which is used in metal processing equipment, metal processing mechanical parts, clamping and other directions, and can solve problems such as the lower blade root that cannot be clamped.

Pending Publication Date: 2021-11-02
HARBIN TURBINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the lower blade root of the blade is in the shape of a fir tree, and the five-axis CNC milling machine cannot clamp the lower blade root of the blade, and further provides a special milling blade steam channel fixture and processing method for the five-axis CNC machine tool

Method used

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  • Special blade steam passage milling clamp for five-axis numerical control machine tool and machining method
  • Special blade steam passage milling clamp for five-axis numerical control machine tool and machining method
  • Special blade steam passage milling clamp for five-axis numerical control machine tool and machining method

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specific Embodiment approach 1

[0042] Specific implementation mode one: combine Figure 1 to Figure 14 Illustrate this embodiment, the processing method of a kind of five-axis numerical control machine tool special-purpose milling blade steam passage fixture of this embodiment, it comprises the following steps:

[0043] Step 1. Process the clamping block 2, the rectangular positioning block 3 and the toothed pressure plate 4:

[0044] Process the clamping block 2, the rectangular positioning block 3 and the toothed pressure plate 4 according to the design size;

[0045] Step 2, process the blank of the tooth-shaped positioning block 1 with a milling machine:

[0046] Use a milling machine to process the blank of the tooth-shaped positioning block 1 into a cuboid with a length of L1, a width of W1, and a thickness of H1, and then heat-treat the processed tooth-shaped positioning block 1 with a hardness of HRC28-32;

[0047] Step 3, Grinding the A1 surface and A2 surface of the tooth-shaped positioning bloc...

specific Embodiment approach 2

[0060] Specific implementation mode two: combination Figure 5 to Figure 8 To illustrate this embodiment, in step 2 of this embodiment, the length of the cuboid is L1, L1=432mm, the width is W1, W1=172mm, and the thickness is H1, H1=100.6mm.

[0061] Others are the same as the first embodiment.

specific Embodiment approach 3

[0062] Specific implementation mode three: combination Figure 1 to Figure 2 Describe the present embodiment, the thickness of the tooth-shaped positioning block 1 in the step 3 of the present embodiment is H2, H2=100±0.03mm, the width is W2, W2=172mm, the length of the tooth-shaped positioning block 1 in the step 4 is L2, L2 = 430mm. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a special blade steam passage milling clamp for a five-axis numerical control machine tool and a machining method, particularly relates to the blade machining field, and aims to solve the problems that a lower blade root of a blade is in a fir tree shape, and a five-axis numerical control milling machine cannot clamp the lower blade root of the blade. The method comprises the steps that a milling machine is used for machining a blank of a tooth-shaped positioning block into a cuboid with the length being L1, the width being W1 and the thickness being H1, a surface grinding machine is used for grinding the face A1 and the face A2 of the tooth-shaped positioning block, then the surface grinding machine is used for grinding the face B1 and the face B2 of the tooth-shaped positioning block, a boring machine is used for boring the face C1 and the face C2 of the tooth-shaped positioning block, the face A2 of the tooth-shaped positioning block is downwards placed on the numerical control milling machine, the small end face of a wheel groove milling cutter makes contact with the face A1 for tool setting, then the wheel groove milling cutter is moved downwards, a first arc-shaped groove is machined, and the sizes of E1, E2 and E3 are guaranteed; and two first holes are drilled and reamed in the face A1, the sizes of F1, F2 and F3 are guaranteed, and machining is completed. The special blade steam passage milling clamp is used for clamping the blade root.

Description

technical field [0001] The invention relates to the field of blade processing, in particular to a special milling blade steam channel fixture and processing method for a five-axis numerically controlled machine tool. Background technique [0002] The role of the blade root of the blade is to be used as the positioning base surface of the workpiece to closely fit with the groove of the main shaft wheel of the steam turbine. Most of the last stage blades are fastened by the fir tree-shaped blade root. The fir tree-shaped blade root has a strong bearing capacity and is easy to assemble and disassemble. Its shape is designed to be formed by connecting several curved surfaces with circular arc transitions between the curved surfaces. Machining requires an extremely precise process to ensure a very uniform load distribution on the teeth of the blade root and the fit of the blades and grooves on all steam turbine rotors to achieve full interchangeability. The rough milling of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q3/06B23P15/00
CPCB23Q3/062B23Q3/063B23P15/00
Inventor 蒲海亮刘剑岳云淼
Owner HARBIN TURBINE