1. Introduction

he programming of CNC based on standard programming languages. It turns out that these standards are not complete. The directors of CNC (DNC) to adapt the specifications of their machines. The standards describe programming languages also called commands. Each builder DNC trying by all means to differentiate its products from those of competition, and develop the standard programming languages [1].

The program content is developed with reference to the ISO standard for machine language frequently in control manager regarding the specificities of each manufacturer DNC. Since each manufacturer control manager tries by all means to differentiate its products from those of the competition and develops programming languages standard FANUC SINUMERIK, NUM, SIEMENS, PHILIPS, BOSCH, FAGOR, MAZOL, .

A set of tutorials enabling the discovery and language learning machine was developed highlighting some functions preparatory core and CNC technology. We can quote EMCO, DENFORD, PROCAM, Tour Assistance, the ARDEM (Association for Research and Development Multimedia Computer Education) who developed three tutorials (CONCEPT CN CN DIDA, IPMO), the association MECAPASSION, DS, SOLIDCONCEPTER software provides several commands, using the operator command is equivalent to choosing the post desired processor. Orders and REALMECA FAGOR offer intuitive tools to machines, using a group technology based on statements of form (dot machining operations). Other work has been developed to provide the learner the basics of CNC programming, but limited to one language [2].

This work aims to study the incompatibility of NC commands the most used and the development of a tool for NC programming in a CAM environment.

2. II.

3. Incompatibilities Address

The most common standard is the ISO standard (ISO 840) which defines the alphabet based on the ASCII code and additional standards that define the programming format (ISO 1056, 1057, 1058, 1059, 2539) [3].

Table 1 shows some differences in codes with two names for the same code [4,7].

4. G98

Feed (minute) Return to starting point Some manufacturers of DNC (FANUC, FAGOR) use the same code in turning and milling for two different designations such as for Fanuc and different codes for the same designation. These differences are even more pronounced in the case of FAGOR. To the SINUMERIK, the same codes are generally used for the same designations. As for the NUM control, using the ISO code, there have been no differences in designation for the same code.

With the exception of preparatory functions and auxiliary functions, the result after the statistical study of these addresses the following [5,10] Faced with a likely lack of consultation and a fierce business competition, it continues to see a nonuniformity of language difficulties caused by the programming of CNC [6]. Hence the importance of developing a tool for NC programming for different orders.

5. III. Statistical Study on nc Addresses

The programming of CNC machines based on standard programming commands. These standards are incomplete. Builders directors CNC fit the specifications of their machines.

NF standards (ISO 6983-1) (NF Z68-037), NF [ISO 4342] describe programming languages [8]. These are inconsistencies despite numerous standardization efforts.

Figure 1 shows a general representation of incompatibilities NC addresses for different commands studied [10] .

6. Tool Developed

To overcome the problems posed by these inconsistencies, contributing to an educational module for NC addresses for FANUC SINUMERIK NUM FAGOR in turning and milling commands has been developed. This tool has several functions, which are: ? Preparation of the workstation (Figure 2); ? Examples of machining operations such as:

? Training (Figure 3); ? Bore (Figure 4);

? Circular interpolation (Figure 5 , 6); ? Linear interpolation (Figure 7); ? Designation of preparatory functions after choosing "control / operation" and the "G -code" (Figure 8) ? Designation of auxiliary functions after selecting the "control" (Figure 9); ? Identification of all addresses A to Z (Figure 10 V.

A 2% B 4% C 3% D 3% H 4% F 3% I 5% J 3% K 11% L 3% N 5% O 1% P 11% Q 6% R 12% T 1% U 2% V 1% W 2% X 7% Y 3% Z 6% A B C D H F I J K L N O P Q R T U V W X Y Z ( ) A Year

7. Conclusion

A statistical study has been to highlight the differences and incompatibilities between the addresses of the various commands. We find that 62.50% of the addresses using one or two appointments, while the remaining addresses, or 37.50%, using four to nine nominations. This study could be used as a criterion of choice of material depending on the desired goal. About a third of the addresses do not change regardless of the order designations used. The syntax for writing a block of program database used for the development of an adaptation module of machining instructions To help the programmer to develop a machining program in different order, a tool was developed. This tool has several functions. The first function is to seek designation of preparatory functions after selecting the command "/ operation" and "G-code" and axillary functions. The second function allows the identification addresses with writing syntax desired codes. The third function processes Automation of various cutting parameters. The fourth function is devoted to the simulation of machining programs.

: -37.50% use the same designation -25% use two names -08.33% use three designations -08.33% use four designations T 33% use five names (addresses Q, H) -04.16% use seven nominations (address P) -04.16% use eight nominations (Address R) -04.16% use nine nominations (e-K) — Figure 1.

Figure 1 : The statistical incompatibilities IV. — Figure 2. Figure 1 :

Figure 2 : 26: Preparing the Workstation — Figure 3. Figure 2 :

Figure 3 : Example of Training — Figure 4. Figure 3 :

Figure 4 : Example of Bore — Figure 5. Figure 4 :

Figure 5 : Example of circular interpolation in turning — Figure 6. Figure 5 :

Figure 6 : Example of linear interpolation (G01) in milling — Figure 7. Figure 6 :Figure 7 :Figure 8 :Figure 9 :

Figure 10 : Examples of identification of CN codes A to Z in turning, milling — Figure 8. Figure 10 :

Figure 11 : Example of automated calculation of cutting parameters in milling (Surfacing) — Figure 9. Figure 11 :

Development of a tool for programming the machining instructions in a CAM environment — Figure 10.

Figure 12 : Example of automated calculation of cutting parameters in turning (cutting) — Figure 11. Figure 12 :

Figure 12. Table 1 :

	designation
Codes	Turning	Milling
G76	Threading cycle	bore
G90	Removal cycle	absolute programming
G92	Threading cycle	absolute programming
G94	Face turning cycle	Feed (minute)

Appendix A

Appendix A.1 ( )

A Year

Appendix B

, 10.1115/1.859902.paper221. FANUC 1995. (Manuels de tournage B62634/02 et fraisage B62644/02, FANUC GE LTD)
la Pratique de la Commande Numérique des Machines Outils, C Marty , C Cassagnes , P Marin . 1993. Paris: LAVOISIER.
, Emco Win . 10.1115/1.859902.paper221. 2003. EMCO, Autriche. (Manuel de programmation sinumerik 810/820 (DIN 66025)
F Sebaa , M Rahou , Cheikh A . Contribution à la programmation desadresses CN pour différents langages dans un environement FAO, p. 9.
F Sebaa , A Cheikh . compatibilités des commandes des MOCN et leurs impacts sur la programmation assistée en CFAO, STEMA'03, (Tlemcen ,Algerie
) 2003.
, J-P Urso . Commande Numérique Programmation 1999.
A Tool for Programming CNC Machining. M , Rahou F Sebaa , A Cheikh , F Rahou . 10.1115/1.859902.paper221. ASME 2011.
, Mécanique Congrés De . 2009. Marrakech, Maroc.
, Mécanique Congrés De . 2009. Marrakech, Maroc.
Rahou M , F Sebaa , A Et Cheikh . Etude statistique des incompatibilités des adresses CN de différents langages de programmation, p. 9.
Module d'adaptation des instructions d'usinage des MOCN, Sebaa F , Cheikh A . JEM 03. 2003. Annaba.
, Sebaa F , A Cheikh , Medjadi N Integration De . CIP Multimedia Dans La Programmation CN Conversationnelle Dans Un Environnement FAO (ed.) 2005. 2005.

Development of a Tool for Programming the Machining Instructions in a CAM Environment

Table of contents