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Milling Tooling for Fungus Root Blades of Steam Turbine

A milling tooling and fungus-shaped technology, which is applied in positioning devices, milling machine equipment, manufacturing tools, etc., can solve the problems of no steam turbine fungal-shaped blade root blade milling tooling, high machining dimensional accuracy requirements, and can not exceed 0.03mm, etc. Simple, ensure consistent processing, and improve processing efficiency

Active Publication Date: 2015-08-19
HARBIN TURBINE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During production and processing, the blades are required to process the dimensions on both sides of the blade root according to the processing data of the rotor. The precision of the processing dimensions is required to be less than or equal to 0.02mm, and the parallelism of the two shoulders of the blades cannot exceed 0.03mm. At present, there is no special Milling Tooling for Machining Fungus Root Blades of Steam Turbine

Method used

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  • Milling Tooling for Fungus Root Blades of Steam Turbine
  • Milling Tooling for Fungus Root Blades of Steam Turbine
  • Milling Tooling for Fungus Root Blades of Steam Turbine

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specific Embodiment approach 1

[0008] Specific implementation mode one: combine Figure 1 ~ Figure 3 Explain that the milling tooling of the steam turbine fungus root blade in this embodiment includes a bottom plate 1, a screw rod 2, a positioning block 3, two pressure plates 4, two support screws 5, two adjusting studs 6, and two threaded ejector rods 7 , two ejector rod bearings 8 and two nuts 9, the base plate is a rectangular base plate, the base plate 1 is horizontally arranged, the positioning block 3 is vertically fixed in the middle of one end of the upper end face in the width direction of the base plate 1, and the center of the end face of the positioning block 3 A positioning threaded hole 3-1 is processed, and the axial direction of the positioning threaded hole 3-1 is set perpendicular to the side wall of the one end of the bottom plate 1, and one end of the plate surface of the pressure plate 4 is processed with a first threaded hole 4 along the thickness direction of the pressure plate 4 -1, ...

specific Embodiment approach 2

[0009] Specific implementation mode two: combination image 3 To illustrate, the end of the screw 2 in this embodiment is provided with a rubber head 2-1. Such setting makes the cooperation between the screw rod 2 and the mushroom-shaped leaf root 10 more closely, and the positioning effect is better. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0010] Specific implementation mode three: combination figure 2 Note that the length L of the bottom plate 1 of this embodiment is 300 mm. Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.

[0011] Working principle: After the milling tool of the present invention is assembled, the mushroom-shaped root blade 10 to be processed is clamped on the milling tool, and then the milling tool is clamped on a horizontal milling machine for milling.

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Abstract

The invention relates to a milling tool for steam turbine bacterial-type root blades, and solves the problem in the prior art that no special milling tool for processing the steam turbine bacterial-type blade root blades exists. A positioning block is vertically and fixedly connected with the middle part of one end of an upper end surface of a base plate in the width direction; a support screw passes through a first threaded hole and is in threaded connection with a pressing plate; two sides of the base plate, along the axial direction of a positioning threaded hole, are respectively fixedly connected with an ejection rod support and a support screw sequentially; a screw rod passes through the positioning threaded hole of the positioning block and is connected with a positioning thread; the lower ends of the bacterial-type root blades are clamped on the positioning block for positioning; the screw rod is rotated so as to butt against the bacterial-type root blades; each pressing plate is pressed on the upper surfaces of the bacterial-type root blades; adjusting studs are arranged in a manner of penetrating through guide grooves of the pressing plates; a nut is threadedly connected with the upper end of each adjusting stud so as to press the corresponding pressing plate tightly; and the threaded ejection rods are rotated so as to push two sides of the bacterial-type root blades tightly. The milling tool for the steam turbine bacterial-type root blades, provided by the invention, is used for clamping the steam turbine bacterial-type root blades.

Description

technical field [0001] The invention relates to a milling tool for fungus-shaped blade root blades of a steam turbine. Background technique [0002] The root of the steam turbine blade is a fungus-shaped blade. Since the blade top has its own crown and rivets and the radial dimensions are different, it brings great difficulty to the processing of the blade root according to the rotor groove, which has become a production bottleneck. . During production and processing, the blades are required to process the dimensions on both sides of the blade root according to the processing data of the rotor. The precision of the processing dimensions is required to be less than or equal to 0.02mm, and the parallelism of the two shoulders of the blades cannot exceed 0.03mm. At present, there is no special Milling tooling for machining mushroom-shaped blade root blades of steam turbines. Contents of the invention [0003] In order to solve the problem that there is no milling tool speci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23C3/18B23Q3/02
Inventor 李辉徐玉宝闫智宏刁建平孙柯
Owner HARBIN TURBINE
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