Technical Drawing in Photonics Lesson 12 Axonometric projections

Technical Drawing in Photonics Lesson 12 Axonometric projections. Dr. Zsolt István Benkő TAMOP-4. 1. 1. C-12/1/KONV-2012 -0005 project „Preparation of the concerned sectors for educational and R&D activities related to the Hungarian ELI project”

Lesson 12 Axonometric projections are for easy visualization of the objects. This kind of projection is a compromise: the correct values can be measured parallel to an axis and it gives a good image of the objects in a single view but all other dimensions (not parallel to any axis) are distorted. Three types are used mainly: 1. Isometric projection 2. Dimetric projection – frontal projection (cabinet projection) 3. Dimetric projection – classical (or 7: 8) projection 4. Isometric uses the same scale for all axes (1: 1). Dimetric uses 1: 1 scale on two axes and one half scale on the 3 rd axis. Technical drawing in Photonics

Lesson 12 Isometric projection z(1: 1) 120 o x(1: 1) Technical drawing in Photonics y(1: 1)

Lesson 12 Frontal projection (cabinet projection) z(1: 1) 135 o y(1: 1) 135 o x(1: 2) Technical drawing in Photonics

Lesson 12 Frontal projection (cabinet projection) z(1: 1) 135 o x(1: 1) 135 o y(1: 2) Technical drawing in Photonics

Lesson 12 Classical (7: 8) projection z(1: 1) 8 7 x(1: 2) Technical drawing in Photonics 8 1 y(1: 1)

Lesson 12 Classical (7: 8) projection z(1: 1) 1 x(1: 1) 8 8 7 y(1: 2) Technical drawing in Photonics

Lesson 12 References 1. 2. 3. Ocskó Gy. , Seres F. : Gépipari szakrajz, Skandi-Wald Könyvkiadó, Budapest, 2004 Lőrincz P. , Petrich G. : Ábrázoló geometria, Nemzeti Tankönyvkiadó Rt. , Budapest, 1998 Pintér M. : Auto. CAD tankönyv és példatár, Computer. Books, Budapest, 2006 Technical drawing in Photonics