Applying the basics of technical drawing Line Drawing

Learning Objectives v Students are expected to draw a line. Teknologi dan Rekayasa

Line Drawing a straight line using a ruler triangle: 1. Put the triangle hypotenuse 45 degrees such that coincides with the known line 1 and the bottom of the triangle held by others. 2. Rotate the triangle 45 degrees - 45 degrees by 90 degrees (see arrow B) then the hypotenuse will be perpendicular to the line. Drag the triangles (see arrows B) if necessary pull the line m Teknologi dan Rekayasa

How to Draw Straight Line Portrait Teknologi dan Rekayasa

How to Draw Straight Lines Teknologi dan Rekayasa

How to Draw Line Slopes Teknologi dan Rekayasa

Drawing Parallel Lines Teknologi dan Rekayasa

Line Drawing Curves To create a curved line using the term must be determined before the radius of a circle or round center circle. For example the radius of the circle center of M 1 is greater than the radius of the circle M 2 Create a central axis line of rotation curves M 1 and M 2 as large fingers. Make a half circle with a central term in M 2, then it is place-related curve. See next picture Teknologi dan Rekayasa

Line Drawing Curves Teknologi dan Rekayasa

Specify any point A, B, C, D and E v v v Find mall in accordance with the curved arch 3 points A, B and C. Find more malls are in accordance with the curved arch C, D and E Apparently the curve for A, B, C, D and E are not aligned So arch C, D and E cancel Use the arch to mall points C and D only, but the estimated arc connecting or so one And finally make the curve from point D and E to connect the next curve of the mall looking for a suitable The results of the pull curve can be seen in the following figure. Teknologi dan Rekayasa

Teknologi dan Rekayasa

Dividing Line 1. Line AB is divided into two equal length sections 2. Create two circular arcs with A and B as the center, the radius R arbitrary. The two arcs intersect in a and b Pull the line AB intersecting ab at C 3. Then AC = CB Teknologi dan Rekayasa

Teknologi dan Rekayasa

Divide the line AB into parts of equal length. (for example, is divided into 8 parts) 1. Pull any lines (from A) 2. The size of the lines of the same ah long-term wearing aa = ab = bc = cd = de = ef = fg = gh 3. Connect the points with B h 4. Pull of the points: g, f, e, d, c, b, a, a line parallel to the line HB lines will be cut AB at the points split in 8 parts of equal length. Teknologi dan Rekayasa

Teknologi dan Rekayasa

Combining Line 1. To combine a straight line with a straight line to get attention is no extra lines or cross cutting, it must be right. 2. Pull the line from point a to point B, then proceed from point to point B to C and so on from point C to point D Line ABCD join. 3. Do not combine incompatible lines because of possible results would be less good. For example from A to B and from D to C onwards from B to C Teknologi dan Rekayasa

Teknologi dan Rekayasa

• Meanwhile, combine curves and straight lines should be starting from the first curve. • Create a semicircular curve of M 1 center from point A to point B • Forward draw a straight line from point B to point C. • And so on for half an M 2 center circle from point C to point D • Remember do not make lines that are not consecutive, the result will be less good. • For example created a large semicircle M 1 center from point A to point B, then a half circle from the M 2 center point D to point C and so on to make a line from point B to point C Teknologi dan Rekayasa

Teknologi dan Rekayasa

b. Drawing many kinds of Shading Stating a line that looks / looked at an object Dashed line (about ½ thick line drawings) stated line that looks at the back of the piece or not visible due to blocked Line end-point (approximately 1 / 3 thick line drawings) As the axis line Stating a piece (plus a letter to the tip and the base of this line) Limit the painting, if the Part-painted objects discarded Teknologi dan Rekayasa

Teknologi dan Rekayasa

c. Drawing the various symbols Teknologi dan Rekayasa

kinds of material symbols Teknologi dan Rekayasa

Teknologi dan Rekayasa

Thank you Teknologi dan Rekayasa