Bilgisayar destekli kalıp tasarımı ve imalatı
Computer aided mould design and manufacturing
- Tez No: 46550
- Danışmanlar: PROF.DR. MUSTAFA AKKURT
- Tez Türü: Yüksek Lisans
- Konular: Makine Mühendisliği, Mechanical Engineering
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 1995
- Dil: Türkçe
- Üniversite: İstanbul Teknik Üniversitesi
- Enstitü: Fen Bilimleri Enstitüsü
- Ana Bilim Dalı: Belirtilmemiş.
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 39
Özet
workpiece in terms of basic geometric elements via points, line, surfaces, circles etc. Second, direct the cutting tool to perform machining steps along these geometric elements. Once a cutter path is created it can be replayed for verification. The computer assists the programmer by animating the entire path on the display terminal, showing the location of the cutter visually, and by displaying the X, Y and Z coordinates. After defining a machining program these NC words are stated in the program. - N code : The sequence number, used to identify each block within an NC program and provides a means by which NC commands may be rapidly located. N001 G92X0.Y0.G91 G21; N002 G01 X75.0 Y25.5 F600 S800; N003... - G code : The preparatory function, used as a communication device to prepare machine-control unit (MCU). GOO Point to point positioning G01 Linear interpolation G02 Circular interpolation cw G03 Circular interpolatin ccw G40 Cutter compensation - cancel G41 Cutter compensation - left G42 Cutter compensation - rigth G90 Absolute dimension G91 Incremental dimension - X, Y, Z words : these give coordinate positions of the tool. - F code : Specifies the feed in a machining oparation. (mm or in per min) - S code : Specifies the cutting speed of a machining process, (rpm) - T code : Specifies which tool is to be used in a spesific operation. - M code : It is used to designate a particular mode of operation for an NC machine tool. MOO Program stop M02 End of program M03 Spindle cw M04 Spindle ccw M05 Spindle off M06 Toll change VET
Özet (Çeviri)
SUMMARY Computer Aided Mould Design And Manufacturing The most important aim of the manufacturing is the production with better quality, lower cost and the large scale of product in a certain period of time. In order to increase the number of product in a certain time period, mould technology has been used for years. In the design and manufacturing of a mould, all stages of machining are icluded and the parts manufactured with these stages are assembled in the mould. With the developing technologies the time consumed during the design and manufacturing of a mould has been decreased continuosly. The reason for this is the development of control systems and the standartization of the parts of the mould. The recent activities developed and used in this field is the computer aided design (CAD) and computer aided manufacturing (CAM) systems. These systems increase the efficiency due to their high rate of flexibility for the changes during the manufacturing of the mould. These systems are produced for the workstations at begining but now they are available for the personel computers also. The price of this systems are not so much for a medium scale production firm if it has got the CNC machines. Computer-aided design (CAD) can be most simply described as“using a computer in the design process”. In the design process, a computer can be used in both the representation and the analysis steps. The application of CAD for representation is not limited to drafting. Three-dimensional wire frame modelling, boundry reresentation (B-rep) modelling, and solid modelling are representation methods available to CAD users. To aid an engineering analysis, there are packages Vworkpiece in terms of basic geometric elements via points, line, surfaces, circles etc. Second, direct the cutting tool to perform machining steps along these geometric elements. Once a cutter path is created it can be replayed for verification. The computer assists the programmer by animating the entire path on the display terminal, showing the location of the cutter visually, and by displaying the X, Y and Z coordinates. After defining a machining program these NC words are stated in the program. - N code : The sequence number, used to identify each block within an NC program and provides a means by which NC commands may be rapidly located. N001 G92X0.Y0.G91 G21; N002 G01 X75.0 Y25.5 F600 S800; N003... - G code : The preparatory function, used as a communication device to prepare machine-control unit (MCU). GOO Point to point positioning G01 Linear interpolation G02 Circular interpolation cw G03 Circular interpolatin ccw G40 Cutter compensation - cancel G41 Cutter compensation - left G42 Cutter compensation - rigth G90 Absolute dimension G91 Incremental dimension - X, Y, Z words : these give coordinate positions of the tool. - F code : Specifies the feed in a machining oparation. (mm or in per min) - S code : Specifies the cutting speed of a machining process, (rpm) - T code : Specifies which tool is to be used in a spesific operation. - M code : It is used to designate a particular mode of operation for an NC machine tool. MOO Program stop M02 End of program M03 Spindle cw M04 Spindle ccw M05 Spindle off M06 Toll change VETSUMMARY Computer Aided Mould Design And Manufacturing The most important aim of the manufacturing is the production with better quality, lower cost and the large scale of product in a certain period of time. In order to increase the number of product in a certain time period, mould technology has been used for years. In the design and manufacturing of a mould, all stages of machining are icluded and the parts manufactured with these stages are assembled in the mould. With the developing technologies the time consumed during the design and manufacturing of a mould has been decreased continuosly. The reason for this is the development of control systems and the standartization of the parts of the mould. The recent activities developed and used in this field is the computer aided design (CAD) and computer aided manufacturing (CAM) systems. These systems increase the efficiency due to their high rate of flexibility for the changes during the manufacturing of the mould. These systems are produced for the workstations at begining but now they are available for the personel computers also. The price of this systems are not so much for a medium scale production firm if it has got the CNC machines. Computer-aided design (CAD) can be most simply described as“using a computer in the design process”. In the design process, a computer can be used in both the representation and the analysis steps. The application of CAD for representation is not limited to drafting. Three-dimensional wire frame modelling, boundry reresentation (B-rep) modelling, and solid modelling are representation methods available to CAD users. To aid an engineering analysis, there are packages Vworkpiece in terms of basic geometric elements via points, line, surfaces, circles etc. Second, direct the cutting tool to perform machining steps along these geometric elements. Once a cutter path is created it can be replayed for verification. The computer assists the programmer by animating the entire path on the display terminal, showing the location of the cutter visually, and by displaying the X, Y and Z coordinates. After defining a machining program these NC words are stated in the program. - N code : The sequence number, used to identify each block within an NC program and provides a means by which NC commands may be rapidly located. N001 G92X0.Y0.G91 G21; N002 G01 X75.0 Y25.5 F600 S800; N003... - G code : The preparatory function, used as a communication device to prepare machine-control unit (MCU). GOO Point to point positioning G01 Linear interpolation G02 Circular interpolation cw G03 Circular interpolatin ccw G40 Cutter compensation - cancel G41 Cutter compensation - left G42 Cutter compensation - rigth G90 Absolute dimension G91 Incremental dimension - X, Y, Z words : these give coordinate positions of the tool. - F code : Specifies the feed in a machining oparation. (mm or in per min) - S code : Specifies the cutting speed of a machining process, (rpm) - T code : Specifies which tool is to be used in a spesific operation. - M code : It is used to designate a particular mode of operation for an NC machine tool. MOO Program stop M02 End of program M03 Spindle cw M04 Spindle ccw M05 Spindle off M06 Toll change VETan example of a program for electro-discarge machining N001 G80Z- G92XYZ M05Z1.0 M98 C300Z-H001P100 M98 C330 Z-H002 P100 M98 C360Z-H003P100 M02 N100 G01Z-10. M05Z1. M99 an example of a program for wire cutting machine 00001Sub program N5G91G21 N15G92X-55.I25.4JO N20SODO N25G01G41X10.YO N30Yi.7 N35X5.3 N40G02X.913Y6.933I39.7J-1.7 N45G01X-5.12Y1.372 N50X.44Y1.642 N55G40XOYO N60M50 N65M99 00002Main program N5 M98 P01 Q-15. L24 N10 M02 -K-
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