| 摘要 |
A machining condition estimating apparatus, and method, for estimating a machining condition to suppress a wear volume of a tool when conducting cutting work in a work machine are provided. For example, an analysis model presenting shapes of a tool and cutting material, may be defined, to be a target of analysis, and an initial value for use of analysis and change volume of the machining condition parameter as analysis parameters may be set up. Coordinates for tool and cutting material contact may be calculated. Moreover, a boundary movement rate, a maximum contact length, and a contact angle are calculated. A machining condition presented by the analysis parameter may also be searched and outputted. |
| 主权项 |
1. A machining condition estimating apparatus, for estimating a machining condition to suppress a wear volume of a tool when conducting cutting work in a work machine, comprising:
an analysis model data defining portion stored in a memory, which is configured to define an analysis model presenting shapes of a tool and a cutting material, to be a target of analysis, and various kinds of machining condition parameters relating to relative positions between the tool and the cutting material; an analysis parameter setup portion, which is configured to set up an initial value for use of analysis and change volume of the machining condition parameter as analysis parameters; a tool/cutting material contact geometric calculation portion, which is configured to calculate coordinates “G”, at which the tool and the cutting tool of the analysis mode contact, and center coordinates P of the cutting material, for each combination of the analysis parameters set up, and to calculate a position “γi” of a point “i” and contact length “Lci”, for each point “i” on a blade edge divided into “N” pieces; a contact condition calculation portion, which is configured to calculate a boundary movement rate “Lr” indicative of a ratio between a contact length “Lb” of a region where the contact length “Lci” changes gradually in accordance with change of “γi”, and a maximum contact length “Lt” at a point “i”, at which the contact length is longest, and a contact angle “γr” indicative of a ratio between an angle presenting maximum width, over which a tool blade contacts with the cutting material, and a predetermined blade angle, by producing a distribution waveform with plotting the contact length “Lci” for the each point “i” calculated on a chart, presenting “γi” on a horizontal axis and “Lci” on a vertical axis, thereby to memorize in a memory portion; a machining condition searching portion, which is configured to search a machining condition presented by the analysis parameter, with which the boundary movement rate “Lr” reaches come to be maximal, or a machining condition presented by the analysis parameter, with which the contact angle “γr” come to be maximal, from among the boundary movement rates “Lr” or the contact angles “γr”, which are calculated for all of combinations of analysis parameters, and an estimation result output portion, which is configured to output the machining condition searched. |
