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Method and device for computer-assisted optimisation of occupancy of magazine spaces by tools within at least one tool magazine for a machine tool

A computer-aided, tool magazine technology, used in positioning devices, metal processing equipment, manufacturing tools, etc., can solve problems such as machine downtime, and achieve the effect of short production time and short movement distance.

Active Publication Date: 2020-04-21
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This rescheduling cannot be performed in parallel with the main time (that is to say while production is in progress) and thus brings downtime of the machine tool

Method used

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  • Method and device for computer-assisted optimisation of occupancy of magazine spaces by tools within at least one tool magazine for a machine tool
  • Method and device for computer-assisted optimisation of occupancy of magazine spaces by tools within at least one tool magazine for a machine tool
  • Method and device for computer-assisted optimisation of occupancy of magazine spaces by tools within at least one tool magazine for a machine tool

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Embodiment Construction

[0056] A special case of an optimization method is linear optimization. This linear optimization focuses on optimizing a linear objective function over sets bounded by linear equations and inequalities. This linear optimization is the basis of the solution method for (mixed) integer linear optimization. The so-called Solver (solver) is a collective term for special mathematical computer programs that can solve mathematical problems numerically. In combination with MILP (mixed integer linear programming or mixed integer linear programming), standard solvers such as CPLEX, Scip, Gurobi, XPress can be used for IP programs (integer optimization models).

[0057] An example is described below in which the occupation of tool magazine positions by tools within at least one tool magazine for a machine tool is optimized by means of the MILP model (Mixed Integer Linear Programming), wherein one or Multiple workpieces can be produced by means of tools occupying magazine locations.

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Abstract

The invention relates to a method and device for computer-assisted optimisation of the occupancy of magazine spaces (P) by tools within at least one tool magazine (R) for a machine tool, one or more workpieces of a workpiece type being manufactured with the aid of the tools provided by a magazine unit at a provisioning place. An essential step of the claimed steps of the method according to the invention described in the description is the optimisation of the occupancy of the magazine spaces by tools so that the total waiting time is minimised, wherein the total waiting time is composed of individual waiting times which result in each case from the difference between the detected provisioning period and the detected working step duration if the value of the difference is positive, otherwise the individual waiting time assumes the value zero.

Description

technical field [0001] The invention relates to a method and a device for computer-aided optimization of the occupation of tool magazine locations by tools within at least one tool magazine for a machine tool. Background technique [0002] A machine tool is an automated manufacturing device with which a predetermined shape on a workpiece is produced by means of one or more tools. Several tools can be assigned to a tool type, eg milling. Another type of tool can be drilling, for example. Machine tools have a tool spindle on which a machining tool, also called a spindle tool, is located during machining. [0003] The tools that can be used by the machine tool to machine the workpiece are stored in the tool magazine. There are different types. A very common form is the chain tool magazine, which is used, for example, in the automotive industry. [0004] Another type of tool magazine is the rack tool magazine R, such as in figure 1 As outlined in , there can be quite a few...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q3/155G05B19/418
CPCG05B19/4187B23Q3/15503G05B2219/32276Y02P90/02G05B19/182G05B19/40938G05B2219/32257G05B2219/33124
Inventor C.劳耶
Owner SIEMENS AG