Cutting condition and tool life display device for a numerical controller

Patent metadata

Field	Value
Publication number	US-9665085-B2
Application number	US-201414221247-A
Country	US
Kind code	B2
Filing date	Mar 20, 2014
Priority date	Mar 21, 2013
Publication date	May 30, 2017
Grant date	May 30, 2017

Abstract

A numerical controller controls a spindle and/or a movable axis of a finishing machine based on a machining program. A cutting condition display device configured to display a cutting condition for the numerical controller calculates cutting conditions including a cutting speed, a feed per spindle revolution per cutting edge of a tool, and a depth of cut for each fixed time during an operation of the finishing machine, based on any or a combination of data on the spindle, the movable axis, a cutting tool, and an object to be cut, which are held by the numerical controller. The calculated cutting condition is stored for each tool and displayed in a graph.

First claim

The invention claimed is:

1. A cutting condition display device, comprising:
a numerical controller configured to control at least one of a spindle and a movable axis of a finishing machine based on a machining program among a plurality of machining programs,
wherein the cutting condition display device is configured to display cutting conditions for the finishing machine, and comprises:
a cutting condition calculation unit configured to calculate at least one of cutting conditions including a cutting speed, a feed per spindle revolution per cutting edge of a tool, and a depth of cut for each fixed time or each predetermined block of each of the plurality of machining programs during an operation of the finishing machine, based on any or a combination of data on the spindle, the movable axis, said tool, and an object to be cut, which are held by the numerical controller;
a cutting condition storage unit configured to store, for each of the plurality of machining programs, the calculated at least one cutting condition for said tool during the operation of the finishing machine; and
a graphic display unit configured to graphically display the cutting conditions stored in the cutting condition storage unit during the operation of the finishing machine,

wherein
the plurality of machining programs includes a first machining program and a second machining program,
the cutting conditions stored in the cutting condition storage unit include
a first set of cutting conditions of the first machining program, the first set of cutting conditions indicating a first tool life for said tool, and
a second set of cutting conditions of the second machining program, the second set of cutting conditions indicating a second tool life for said tool, the second tool life different from the first tool life, and

the graphic display unit is configured to simultaneously display the first and second sets of cutting conditions using graphically distinguishable first and second sets of indicators, respectively, to enable (i) comparison between the first tool life and the second tool life of the first and second machining programs, respectively, and (ii) based on the comparison, selection of a machining program among the plurality of machining programs for the operation of the finishing machine.

2. The cutting condition display device according to claim 1 , further comprising;
a cutting condition acquisition unit configured to acquire at least one of cutting conditions including a spindle speed and a feed speed for each fixed time or each predetermined block of each of the plurality of machining programs, during the operation of the finishing machine, based on any of the data on the spindle and the movable axis,
wherein the cutting condition storage unit is configured to store, for said tool, the cutting condition acquired by the cutting condition acquisition unit.

3. A cutting condition display device, comprising:
a numerical controller configured to control at least one of a spindle and a movable axis based on a machining program among a plurality of machining programs; and
a machining simulation device configured to perform a machining simulation for the numerical controller,
wherein the cutting condition display device is configured to display cutting conditions for the machining simulation device, and comprises:
a cutting condition calculation unit configured to calculate at least one of cutting conditions including a cutting speed, a feed per spindle revolution per cutting edge of a tool, and a depth of cut for each fixed time or each predetermined block of each of the plurality of machining programs during the machining simulation, based on any or a combination of a command given to the spindle by the machining program, a command given to the movable axis by the machining program, and data on said tool and an object to be cut;
a cutting condition storage unit configured to store, for each of the plurality of machining programs, the calculated at least one cutting condition for said tool during the machining simulation; and
a graphic display unit configured to graphically display the cutting conditions stored in the cutting condition storage unit during the machining simulation,

wherein
the plurality of machining programs includes a first machining program and a second machining program,
the cutting conditions stored in the cutting condition storage unit include
a first set of cutting conditions of the first machining program, the first set of cutting conditions indicating a first tool life for said tool, and
a second set of cutting conditions of the second machining program, the second set of cutting conditions indicating a second tool life for said tool, the second tool life different from the first tool life, and

the graphic display unit is configured to simultaneously display the first and second sets of cutting conditions using graphically distinguishable first and second sets of indicators, respectively, to enable (i) comparison between the first tool life and the second tool life of the first and second machining programs, respectively, and (ii) based on the comparison, selection of a machining program among the plurality of machining programs for the machining simulation.

4. The cutting condition display device according to claim 3 , further comprising;
a cutting condition acquisition unit configured to acquire at least one of cutting conditions including a spindle speed and a feed speed for each fixed time or each predetermined block of each of the plurality of machining programs, during the machining simulation, based on the command given to the spindle or the command given to the movable axis,
wherein the cutting condition storage unit is configured to store, for said tool, the cutting condition acquired by the cutting condition acquisition unit.

5. The cutting condition display device according to claim 1 , wherein
the graphic display unit is configured to display a graph created by plotting each of the first and second sets of cutting conditions on a coordinate system, wherein
the coordinate system has coordinate axes representative of the cutting conditions in each of the first and second sets of cutting conditions, and
values of the cutting conditions in each of the first and second sets of cutting conditions correspond to plotted points in the graph.

6. The cutting condition display device according to claim 5 , further comprising:
a block number acquisition unit configured to acquire, for each of the plurality of machining programs, a block number when the at least one cutting condition is calculated by the cutting condition calculation unit,
wherein the cutting condition storage unit is configured to store the calculated at least one cutting condition in association with the corresponding machining program and the block number acquired by the block number acquisition unit, and
the graphic display unit is configured to further display the first or second machining program and a cursor, wherein
when a point plotted on the graph is selected, the graphic display unit is configured to move the cursor on the displayed first or second machining program to the block stored in association with the at least one cutting condition corresponding to the selected plotted point.

7. The cutting condition display device according to claim 5 , further comprising:
a block number acquisition unit configured to acquire, for each of the plurality of machining programs, a block number when the at least one cutting condition is calculated by the cutting condition calculation unit,
wherein the cutting condition storage unit is configured to store the calculated at least one cutting condition in association with the corresponding machining program and the block num

Assignees

• Fanuc Corp

Inventors

• Kawashima Yuusuke

Classifications

• G05B2219/36284

  Use of database for machining parameters, material, cutting method, tools · CPC title

• Y02P90/265

  Cross-Sectional Technologies · mapped topic

• G05B2219/36283

  Select, enter machining, cutting conditions, material file, tool file · CPC title

• G05B19/40937 Primary

  concerning programming of machining or material parameters, pocket machining · CPC title

• G05B2219/35252

  Function, machine codes G, M · CPC title