Toolpaths Programming in an Intelligent Step - Nc Manufacturing Context

نویسندگان

  • Raphaël LAGUIONIE
  • Matthieu RAUCH
  • Jean-Yves HASCOET
چکیده

The current language for CNC programming is G-code which dates from the beginning of the eighties with the norm ISO 6983. With the new technologies, G-code becomes obsolete. It presents drawbacks that create a rupture in the numerical chain at the manufacturing step. A new standard, STEP-NC, aims to overtake these lacks. A STEP-NC file includes all the information for manufacturing, as geometry description of the entities, workplan, machining strategies, tools, etc. For rough pocket milling, the ISO norms propose different kind of classical strategies as bidirectional, parallel or spiral contour, etc. This paper describes a new way of toolpath programming by the repetition of a pattern all along a guide curve. It presents several advantages as building fastness and easiness. The integration of pattern strategies in STEP-NC standard is an other step for the development of these strategies but also for the enrichment of STEP-NC possibilities. A complete STEP-NC numerical chain was built, integrating these pattern strategies. The implementation of this approach of building pattern strategies was made by the development of tools for the complete manufacturing cycle, from the CAD file to the machined part. Several application cases were experimented on machine tool to validate this approach and the efficiency of the developed tools.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Pro/TOOLMAKER-the power of high-speed machining for toolmaking

Pro/TOOLMAKER offers the power of high-speed machining for toolmaking, prototypes, and other precision machining applications, with a fast, easy-to-use, NC toolpath programming application. Manufacturing engineers and machinists now have the most powerful package of NC programming capabilities, including NC post-processing and tooling libraries, in a single, stand-alone product package. With Pr...

متن کامل

Pro/TOOLMAKER-the power of high-speed machining for toolmaking

Pro/TOOLMAKER offers the power of high-speed machining for toolmaking, prototypes, and other precision machining applications, with a fast, easy-to-use, NC toolpath programming application. Manufacturing engineers and machinists now have the most powerful package of NC programming capabilities, including NC post-processing and tooling libraries, in a single, stand-alone product package. With Pr...

متن کامل

Making CNC machine tools more open, interoperable and intelligent - a review of the technologies

The aim of the next generation of computer numerically controlled (CNC) machines is to be portable, interoperable and adaptable. Over the years, G-codes (ISO 6983) have been extensively used by the CNC machine tools for part programming and are now considered as a bottleneck for developing next generation of CNC machines. A new standard known as STEP-NC is being developed as the data model for ...

متن کامل

A STEP-Compliant Intelligent Process Planning System for Milling

The new standard ISO 14649 provides CAD/CAPP/CAM/CNC with an interface and a comprehensive high level and detailed manufacturing information. CNC technology based on STEP-NC will be the future trend, and the intelligent process planning is the core of STEP-NC oriented CNC technology. The objective of this research is to present the architecture, key technologies and implementation of STEP-NC or...

متن کامل

Dealing with feature interactions for prismatic parts in STEP-NC

Determining the precedence of machining features is a critical issue in feature-based process planning. It becomes more complex when geometric interaction occurs between machining features. STEP-NC, the extension of STEP (ISO 10303) standard developed for CNC controllers, is a feature-based data model. It represents all the geometric and topological product data minus feature interactions. In t...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2009