Machining simulation device

Patent metadata

Field	Value
Publication number	US-10474130-B2
Application number	US-201514823439-A
Country	US
Kind code	B2
Filing date	Aug 11, 2015
Priority date	Aug 12, 2014
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

A machining simulation device includes a cutting condition extraction unit, a tool type determine unit, a load calculation unit configured to calculate a spindle load, a load determination unit configured to determine whether the calculated spindle load is within a predetermined maximum load, an adjustment amount calculation unit configured to calculate an adjustment amount of the cutting condition when the calculated spindle load is determined not to be within the predetermined maximum load, and a display unit configured to display a result of the determination.

First claim

The invention claimed is:

1. A machining simulation device, comprising:
a processor configured to perform machining simulation based on setup data including workpiece position data and tool data, workpiece data including data of a workpiece type and configuration data, and a machining program, wherein the processor is configured to:
extract a cutting condition in machining based on the machining program, from the machining program,
determine a tool type of a tool to be used in said machining in accordance with the machining program,
calculate, based on the extracted cutting condition and the determined tool type, a spindle load of a spindle of a machining tool, to which the tool is attached, in the machining,
determine whether the calculated spindle load exceeds a predetermined threshold or not, wherein the threshold is determined based on (i) the calculated spindle load and (ii) a rate at which the cutting condition to be adjusted is changed, and
in response to a determination that the calculated spindle load exceeds the predetermined threshold, calculate, in accordance with an adjustment method corresponding to the determined tool type, an adjustment amount with which the cutting condition is adjusted such that the spindle load becomes equal to or less than the predetermined threshold; and

a display configured to display
a result of the determination whether the calculated spindle load exceeds the predetermined threshold, and
an adjustment guidance generated based on the calculated adjustment amount,

wherein the processor is further configured to:
analyze the machining program to obtain a cutting direction of the tool and a spindle direction of the spindle,
determine that the tool type is a drill type tool or a tapping type tool in response to the cutting direction of the tool coinciding with the spindle direction, and
determine that the tool type is an end mill type tool in response to the cutting direction of the tool not coinciding with the spindle direction, and

wherein machining of a workpiece is performed by the machining tool using the tool attached to the spindle of the machining tool, in accordance with the machining program containing an adjusted cutting condition which is the cutting condition adjusted based on the adjustment guidance.

2. A machining simulation device according to claim 1 , wherein the processor is further configured to determine the tool type based on a program code of the machining program.

3. A machining simulation device according to claim 1 , wherein
the adjustment method corresponding to the determined tool type is such that the processor is configured to calculate
the adjustment amount of a feed amount in each rotation of the tool and a prepared hole diameter in response to a determination that the tool type is a drill type tool,
the adjustment amount of the feed amount in each rotation of the tool, a cutting width and a cutting depth in response to a determination that the tool type is an end mill type tool, and
the adjustment amount of the prepared hole diameter in response to a determination that the tool type is a tapping type tool.

Assignees

• Fanuc Corp

Inventors

• Nagata Daisuke

Classifications

• G05B19/4069 Primary

  Simulating machining process on screen (G05B19/4068 takes precedence) · CPC title

• G05B2219/32356

  For diagnostics · CPC title

• Y02P90/26

  Cross-Sectional Technologies · mapped topic

• Y02P90/02

  Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS] · CPC title