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Descriptive geometry and engineering graphics

All lectures: All lectures on the discipline: descriptive geometry and engineering graphics are collected here. These fascinating lectures provide us with the opportunity to explore the deep principles and phenomena underlying our knowledge and our desire to understand the world.


1. 1. TECHNICAL MEANS AND METHODS OF IMPLEMENTATION OF GRAPHIC WORKS § 1. General information
2. §2. Materials
3. § 3. Tools
4. § 4. Accessories and devices
5. § 5. Graphic automata
6. § 6. Methods of performing graphic works
7. DRAWING DRAWINGS § 7. General information
8. 8. Formats
9. 9. Title Block
10. 10. Scale
11. 11. Lines
12. 12. Inscriptions on drawings
13. 13. Basic rules for drawing dimensions in the drawing
14. QUESTIONS FOR SELF-TESTS
15. SOME GEOMETRIC BUILDINGS § 14. General information
16. 15. The division of the line segment
17. 16. The division of the circle
18. 17. Round corners
19. 18. Conjugation of circular arcs
20. 19. Conjugation of two arcs of circles by the third arc
21. 20. Conjugation of a circular arc and a straight line by a second arc
22. 21. Ovals
23. 22. Local curves
24. QUESTIONS FOR SELF-TESTS In descriptive geometry with answers
25. IMAGE OF OBJECTS OF THREE-DIMENSIONAL SPACE § 26. Projection method
26. 27. Projection methods
27. 28. Properties of projections
28. 29. Orthogonal projections
29. 30. Axonometric projections
30. §31. Projections with numerical marks
31. QUESTIONS FOR SELF-TESTS
32. 4. GENERAL TERMS OF EDUCATION OF THE DRAWING § 23. Definition of drawing
33. 24. The main elements of the geometric space
34. 25. Geometric bodies and their display
35. § 32. Complex point drawing
36. 33. Elements of a three-point integrated point drawing
37. 34. The position of a point in the space of a three-dimensional angle
38. 35. Competing points
39. 36. Replacing projection planes
40. 37. Rectangular coordinates of points
41. QUESTIONS FOR SELF-TESTS
42. IMAGE OF LINES ON DRAWING § 38. Formation of lines
43. 39. Comprehensive line drawing
44. 40. The location of the line relative to the planes of the projections.
45. 41. The mutual arrangement of two straight
46. 42. Determination of the actual size of a straight line segment
47. 43. Curves
48. 44. The mutual arrangement of points and lines.
49. QUESTIONS FOR SELF-TESTS
50. 8. SURFACES § 45. Surface Formation
51. 46. ​​The image of the plane on the drawing
52. 47. The location of the plane relative to the planes of the projections. Mutual arrangement of two planes
53. 48. Special lines in the plane
54. 49. The relative position of a point, a line and a plane.
55. 50. Conical and cylindrical surfaces
56. 51. Torso surfaces
57. 52. Faceted surfaces
58. 53. Screw surfaces
59. 54. Surfaces of rotation
60. 55. Point and line on surface
61. §56. Overview of complex drawing conversion
62. 57. Method of plane-parallel movement
63. 58. Method for replacing projection planes
64. 59. Rotation method
65. QUESTIONS FOR SELF-TESTS
66. § 60. General information on positional tasks
67. 61. The intersection of a line with a plane
68. 62. The intersection of two planes
69. 63. The intersection of the surface with the plane. Cut-out bodies
70. 64. Intersection of surfaces
71. 65. Building a line of intersection of surfaces by the method of auxiliary cutting planes
72. 66. Building a line of intersection of surfaces by the method of auxiliary spheres
73. 67. Special cases of building the line of intersection of two surfaces of revolution.
74. QUESTIONS FOR SELF-TESTS
75. 68. General information on metric problems
76. 69. Determination of the true value of distances
77. 70. Determination of the true value of angles
78. 71. Determination of the true value of a flat figure.
79. 72. Building surface sweeps
80. 73. Sweep pyramidal and conical surfaces
81. 74. Sweep prismatic and cylindrical surfaces
82. QUESTIONS FOR SELF-TESTS
83. General information about axonometric projections
84. 76. Types of axonometric projections
85. 77. Rectangular isometry
86. 78. Rectangular dimetry
87. QUESTIONS FOR SELF-TESTS
88. BASES OF MACHINE BUILDING DRAWINGS Chapter 13. PICTURE OF OBJECTS § 79. General information
89. 80. Building views in the drawing
90. 81. Construction of the third type of subject from two data
91. 82. Making cuts in the drawing
92. 83. The implementation of sections on the drawing
93. 84. Removable elements
94. 85. Conventions and simplifications in the depiction of the subject.
95. 86. Building a visual image of the subject.
96. QUESTIONS FOR SELF-TESTS
97. IMAGE OF DETAIL CONNECTIONS § 87. General information
98. 88. Plug Connections
99. 89. One-piece connections
100. 90. Special connection parts
101. QUESTIONS FOR SELF-TESTS
102. 91. General information on the design and execution of working drawings of parts.
103. 92. Applying material designations on work detail drawings.
104. 93. Dimensioning on work detail drawings
105. 94. Designation of surface roughness on work drawings of parts
106. 95. Execution of drawings of original parts.
107. 96. Making sketches of parts
108. 97. Performing technical drawings of parts
109. 98. Product Overview
110. 99. Execution of a general view drawing
111. 100. Assembly drawing
112. 101. Implementation of specifications for the assembly drawing
113. 102. The order of the assembly drawing
114. 103. Reading and detailing the assembly drawing
115. 104. Execution schemes
116. Perspective Overview
117. Linear perspective
118. Building the perspective of the object by two vanishing points (1 way of architects)
119. Building a perspective of architectural details at a single vanishing point (2 way architects)
120. Building the perspective of the object using the grid method (3 way of architects)
121. Building a perspective of a circle
122. Frontal perspective
123. Corner Perspective
124. Shadows basic concepts
125. AIR PERSPECTIVE
126. Shadowing in orthogonal projections
127. DIRECTION OF LIGHT RAYS
128. SHADOW FROM POINT
129. Construction of real and imaginary shadows of points A and B on the model and plot
130. SHADOW FROM POINT TO FLAT GEOMETRIC OBJECT
131. Task To build a shadow from point D on a triangle ABC.
132. SHADOW FROM POINT TO SURFACE
133. Task To build a shadow from point D on a spherical surface R.
134. SHADOW FROM DIRECT LINE
135. Building a shadow of a straight line AB in general on the epure.
136. SHADOW FROM THE CUTTING VERTICAL DIRECT
137. Construction of the shadow of the segment AB, perpendicular to the horizontal plane of the projections, on the diagram.
138. SHADOW FROM THE CUTTING, PERPENDICULAR FRONTAL PROJECTION PLANE
139. Construction of the shadow of the line segment, perpendicular to the frontal plane of the projections, on the diagram.
140. SHADOW FROM CUTTING, PARALLEL PROJECTION PLANE
141. Construction of shadows of the segments parallel to the planes of the projections on the plot.
142. SHADOW FROM PLANE GEOMETRIC OBJECT DETERMINATION OF TRIANGLE ILLUMINATION
143. BUILDING A SHADOW TRIANGLE
144. THE SHADOWS OF FLAT GEOMETRIC OBJECTS OF PRIVATE POSITION
145. CONSTRUCTION OF A SHADOW OF A CIRCLE, PERPENDICULAR HORIZONTAL PLANE OF PROJECTIONS
146. SHADOW FROM A THREE-DIMENSIONAL GEOMETRIC OBJECT
147. SHADOW OF PARALLELEPIP
148. Construction of the shadow of the parallelepiped on the diagram.
149. SHADOW OF PYRAMID
150. Building the shadow of the pyramid on the plot.
151. SHADOW FROM CYLINDER
152. Construction of the shadow of the cylinder on the plot.
153. CONE SHADOW
154. Construction of a shadow of a cone on an epure.
155. CONSTRUCTION OF A SHADOW FROM A THREE-DIMENSIONAL GEOMETRIC OBJECT
156. Building the shadow of the structure
157. CONSTRUCTION OF SHADOWS AT CENTRAL PROJECTION
158. THE SHADOW FROM THE POINT IN THE PERSPECTIVE under the central projection
159. Building a shadow point in perspective on the plot (central projection)
160. DIRECTION OF LIGHT RAYS IN PERSPECTIVE
161. SHADOW FROM VERTICAL CUT (central projection)
162. The shadow of the vertical segment (on the plot with the central projection)
163. SHADOW OF THE VERTICAL CUT To the light source behind and to the left of it (center projection)
164. shadow of a segment (center projection) Light rays parallel to the picture plane
165. REFLECTIONS. building reflections
166. Ruled surfaces with two guides (Catalan surfaces)