NC hole-machining programming device

• US 20060106486A1
• Filed: 10/24/2005
• Published: 05/18/2006
• Est. Priority Date: 11/16/2004
• Status: Active Grant

• Current Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Inventors: Hattori, Yoshiyuki, Matsubara, Susumu, Tanaka, Katsunori, Imazu, Hiroyoshi, Kamiya, Takashi
• Granted Patent: US 7,349,757 B2
• Time in Patent Office: Days
• US Class Current: 700/186
• CPC Class Codes: G05B 19/40938 Tool management
• CPC Class Codes: Y02P 90/02 Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

An NC hole-machining programming device according to this present invention includes: a tool information storing unit for storing tool information including types and sizes of tools used for hole machining; a form recognizing unit for extracting a cylindrical surface and conical surface as a local geometry which constitutes a hole-machining form of target objects based on CAD data; a machining method determining unit which generates a hole-machining-form pattern based on the hole-machining form detected by the form recognizing unit and determine machining methods based on the hole-machining-form patterns; a tool determining unit for selecting a tool in accordance with the machining methods determined by the machining method determining unit with reference to the tool information; a tool path determining unit which determines a tool path for each tool selected by the tool determining unit; and an NC program generating unit which generates a NC programs based on the tool paths determined by the tool path determining unit.

Claims

1. A numerical control (NC) hole-machining programming device which generates a NC program for hole machining based on CAD data, the device comprising:

a tool information storing unit for storing tool information including types and sizes of tools used for hole machining;

a form recognizing unit for extracting a cylindrical surface and conical surface as a local geometry which constitutes a hole-machining form of target objects based on CAD data;

a machining method determining unit which generates a hole-machining-form pattern based on the hole-machining form extracted by the form recognizing unit and determines machining methods based on the hole-machining-form pattern;

a tool determining unit for selecting a tool in accordance with the machining methods determined by the machining method determining unit with reference to the tool information;

a tool path determining unit which determines a tool path for each tool selected by the tool determining unit; and

an NC program generating unit which generates an NC program based on the tool paths determined by the tool path determining unit.

2. The NC hole-machining programming device according to claim 1, wherein

the CAD data includes dimensions of the local geometries and data related to machining of the local geometries;

the machining method determining unit determines the machining methods based on the data related to machining of the local geometries; and

the tool determining unit selects the tool in accordance with the machining methods determined by the machining method determining unit and with the dimensions of the local geometries.

3. The NC hole-machining programming device according to claim 1, wherein the machining method determining unit generates a plurality of hole-machining-form patterns constituting a single hole-machining form, and determines a machining method for each of the hole-machining-form patterns generated.