Programming method and system of numerical control program for machining turbine rotor tail blade insertion groove

Abstract

The invention provides a programming method and system of a numerical control program for machining a turbine rotor tail blade insertion groove. The method comprises the following steps: providing aninteractive interface to obtain category information and parameter information of a to-be-processed last leaf insertion slot; according to the parameter information, judging the milling track type ofthe tail blade insertion groove; searching and calling a matched parameterized programming template from a preset database based on the category information, the parameter information and the millingtrack category, wherein when the parameterized programming template is called, a tool path for machining the tail blade insertion groove can be calculated according to the parameter information; and writing the tool path into a text file of a numerical control program to complete compiling. According to the method, automatic parameter import of the tail blade insertion groove, automatic judgment of the type of the insertion groove and automatic export of a numerical control program are realized, the workload of technicians is greatly reduced, and the working efficiency and the accuracy degreeare improved.

Description

technical field [0001] The invention relates to the field of processing the insertion groove of the last blade of the industrial steam turbine rotor, in particular to a numerical control program compilation method and system for processing the insertion groove of the last blade of the steam turbine rotor. Background technique [0002] For a certain type of steam turbine rotor blade insertion slot, it is actually milled by a boring and milling machine. For a certain type of end leaf insertion slot, its structure is relatively fixed, but there are many types and structural parameters, and the parameters will change with product changes. In the prior art, the numerical control program used for processing still stays at the stage of manual programming according to a large number of parameters of the end blade insertion groove in the product. This process needs to manually change the parameters according to the type of insertion groove (single and double T, left and right rotati...

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Problems solved by technology

[0003] The T-slots on the rotor sometimes have as many as 30 levels, and the insertion slots of the end blades may also have as many as 20 types of parameters. Manually inputting parameters and calculating trajectory points is prone to problems such as input errors and calculation errors. In addition, modifying the parameters of each type of end leaf insertion slot after judging the type of the end leaf insertion slot (each has four or five main parameters to be modified) is time-consuming and laborious, and it is easy to cause product NCR (non-conforming product item)

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