Stream turbine rotor blade root arc groove roughing milling cutter

A steam turbine rotor and arc groove technology, which is applied to milling cutters, milling machine equipment, manufacturing tools, etc., can solve the problems of difficult chip removal, slow cutting amount, and many chips

Inactive Publication Date: 2010-01-20
常州市西夏墅工具研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the large amount of machining of the blade root groove, the contact area between the tool and the surface of the machined part is relatively large, resulting in a large cutting resistance, and more chips are formed, which is difficult to discharge, forcing the cutting speed to slow down, affecting Processing efficiency, tool consumption is also very large, so that the life of the tool is shortened

Method used

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  • Stream turbine rotor blade root arc groove roughing milling cutter
  • Stream turbine rotor blade root arc groove roughing milling cutter
  • Stream turbine rotor blade root arc groove roughing milling cutter

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] refer to Figure 1 to Figure 7 , The steam turbine rotor blade root arc groove rough milling cutter of the present invention includes a cylindrical cutter body 10, and the center of the cutter body is provided with a shaft hole 11 for installing a rotating shaft. A plurality of blade holders 12 with notches are arranged at intervals on the same circumference of the upper end surface of the cutter body, each blade holder 12 is an extension body from the upper end surface of the cutter body, and two blade holders are separated by arc-shaped chip removal grooves 15, so that the blade seats are arranged at intervals. A face cutting blade 13 is fixed in the notch of each blade seat 12, and the end face cutting blade 13 is fixed on the blade seat 12 by screws, and the end face cutting blade 13 on the blade seat 12 is parallel to the cutter bo...

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Abstract

The invention relates to a stream turbine rotor blade root arc groove roughing milling cutter comprising a cylindrical cutter body, wherein the upper end face of the cutter body in the same circumference is provided a plurality of blade bearings at intervals on which end face cutting blades are arranged; one of the end face cutting blades of any two adjacent blade bearings is arranged on the outer side face of the blade bearing fixed with the end face cutting blade, and the other one of the end face cutting blades is arranged on the inner side face of the blade bearing fixed with the end face cutting blade; the outer periphery and the inner periphery of the cuter body are provided with a plurality with steps symmetrically from top to bottom, wherein the radius of the steps on the outer periphery from top to bottom increases by effect, the periphery of the steps on the inner periphery and the outer periphery is provided with a plurality of cuttings chutes which are sunken towards the wall surface of the cutter body, and the root parts of the cuttings chutes are provided with a tool apron on which a step cutting blade is arranged. The invention has the advantage of high processing efficiency and long service life.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a rough milling cutter for a blade root arc groove of a steam turbine rotor. Background technique [0002] In the steam turbine manufacturing industry, the steam turbine rotor blade root groove (refer to Figure 8 ) processing is a very important and complicated process. In recent years, industrialized countries such as Japan and the United States have successively developed Christmas tree-shaped root groove milling cutters and used them in production, but the import price is very expensive. There are also several domestic companies that have developed Christmas tree-shaped blade root slot milling cutters and have put them into use. However, due to the large amount of machining of the blade root groove, the contact area between the tool and the surface of the machined part is relatively large, resulting in a large cutting resistance, and more chips are formed, whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23C5/02
Inventor 郑鼎元于菊仙周建国
Owner 常州市西夏墅工具研究所有限公司
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