Method for remanufacturing semi-finishing milling cutter by using abandoned finishing milling cutter

A technology of semi-finishing milling and wheel grooves, which is applied in the field of remaking semi-finishing milling cutters from scrap fine milling cutters, and can solve the problems of high consumption of semi-finishing milling cutters.

Active Publication Date: 2012-02-29
HARBIN TURBINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of large consumption of semi-finish milling cutters in existing wheel groove milling cutters, and further provide a method for using scrapped wheel groove fine milling cutters to remanufacture wheel groove semi-finish milling cutters

Method used

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  • Method for remanufacturing semi-finishing milling cutter by using abandoned finishing milling cutter
  • Method for remanufacturing semi-finishing milling cutter by using abandoned finishing milling cutter
  • Method for remanufacturing semi-finishing milling cutter by using abandoned finishing milling cutter

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specific Embodiment approach 1

[0010] Specific implementation mode one: combine Figure 1 to Figure 7 Describe this implementation mode, this implementation mode is realized through the following steps:

[0011] Step 1. Determine the machining allowance, and inspect each groove fine milling cutter 1 to be modified on the magnifying instrument to ensure that the single-sided size of the standard groove semi-finish milling cutter profile II is smaller than the groove fine milling cutter to be modified The single-sided size of profile I of 1 is 0.2 mm, that is, the single-sided machining allowance of profile I of the wheel groove fine milling cutter 1 to be modified is greater than 0.2 mm, so as to determine that the wheel groove fine milling cutter 1 to be modified has enough Grinding the remaining amount, so that the outline dimension of the modified wheel groove fine milling cutter meets the machining accuracy requirements (the wheel groove semi-finishing milling cutter is a tool with high precision require...

specific Embodiment approach 2

[0015] Embodiment 2: This embodiment also includes step 5. In step 5, the restructured wheel groove finish milling cutter 2 obtained in step 4 is coated with a TiAlN nanocomposite coating. The tool with this coating has high wear resistance and low coefficient of friction, which can increase the service life of the tool. Other steps and parameters are the same as in the first embodiment.

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Abstract

The invention discloses a method for remanufacturing a semi-finishing milling cutter by using an abandoned finishing milling cutter, which relates to the technical field of metal cold processing, in particular to the method for remanufacturing the semi-finishing milling cutter by using the abandoned finishing milling cutter. The method aims to solve the problem that the consumption of the semi-finishing milling cutter in a conventional wheel slot milling cutter is large, and comprises the following steps of: firstly, determining the finishing allowance; secondly, remanufacturing the top circle of a wheel slot finishing milling cutter; thirdly, remanufacturing profile molded lines of a threaded part of the wheel slot finishing milling cutter; and finally, remanufacturing end teeth of the wheel slot finishing milling cutter. The method is particularly suitable for remanufacturing a worn abandoned wheel slot finishing milling cutter into a wheel slot semi-finishing milling cutter.

Description

technical field [0001] The invention relates to the technical field of metal cold processing, in particular to a method for remanufacturing a semi-finishing milling cutter by using a discarded finishing milling cutter. Background technique [0002] The wheel groove milling cutter is a special forming tool for processing the wheel groove of the steam turbine rotor. In order to ensure the processing accuracy of the wheel groove and the distribution of the margin, each rotor wheel groove is composed of a rough milling cutter, a semi-finishing milling cutter (one or two) and a fine milling cutter. The semi-finishing milling cutter is a straight-groove type, and it is responsible for large cutting allowance processing. It is the wheel groove cutter with the largest amount of consumption among the three milling cutters, and the consumption is large. Contents of the invention [0003] The purpose of the present invention is to solve the problem of large consumption of semi-finish...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/34
Inventor 刘剑张奇孙盛丽
Owner HARBIN TURBINE
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