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Graphic work 6. Practical and graphic work on drawing. Questions for self-control

20.12.2021

"Mutual intersection of surfaces"

Exercise:

On A4 format, draw a line of mutual intersection of two surfaces. Write down the algorithm for solving the problem.

Instructions for performing graphic work No. 6. According to its version, on A4 format, construct two projections of the given surfaces, enlarging the image several times, so that the sheet occupancy is 80%. In the drawing, keep the lines of the projection connection between the projections.

To construct points of the line of mutual intersection of two surfaces, you need to use the most rational solution. If possible, you should choose such auxiliary cutting planes or surfaces that, in intersection with the given surfaces, give the simplest lines for drawing: circles or straight lines.

When constructing a line of mutual intersection of surfaces, first of all, it is necessary to determine its characteristic points - the points of intersection of the outline generatrices of one surface with another surface, the upper and lower, extreme right and left points (if any).

Draw auxiliary projecting (horizontally projecting or frontally projecting) planes, construct lines of intersection of these auxiliary planes with the given surfaces. Determine the points of mutual intersection of the constructed lines. These points will belong to the desired line of mutual intersection of the specified surfaces.

To find all the necessary points, you need to draw several auxiliary planes and repeat the construction. Next, determine the visibility. Write down the algorithm for solving the problem, having previously designated the surfaces and auxiliary cutting planes with capital letters of the Greek alphabet. Use different colors to tint the resulting images.

An example of how the work is done is shown in Figure 14.

Data for graphic work No. 6
"Intersection of surfaces"

Workbook

Practical and graphic works on drawing

The notebook was developed by the teacher of the highest category of drawing and fine arts Nesterova Anna Aleksandrovna teacher of MBOU "Secondary School No. 1 of Lensk"

Introduction to the subject of drawing

The history of the emergence of graphic methods of images and drawing

Drawings in Russia were made by "draftsmen", a mention of which can be found in the "Pushkarsky Prikaz" by Ivan IV.

Other images - drawings-drawings, represented a view of the structure "from a bird's eye view"

At the end of the 12th century. in Russia, large-scale images are introduced and dimensions are affixed. In the 18th century, Russian draftsmen and Tsar Peter I himself made drawings by the method of rectangular projections (the founder of the method is the French mathematician and engineer Gaspard Monge). By order of Peter I, the teaching of drawing was introduced in all technical educational institutions.

The entire history of the development of the drawing is inextricably linked with technical progress. At present, the drawing has become the main document of business communication in science, technology, production, design, and construction.

It is impossible to create and check a machine drawing without knowing the basics of the graphic language. Whom you will meet while studying the subject"Drawing"

Varieties of graphic images

Exercise: sign the names of the images.

Materials, accessories, drawing tools.

From the history

An iron compass was found on the territory of France in a Gallic burial mound of the 1st century AD. In the ashes that fell asleep in Pompey nineteen centuries ago, archaeologists also found many bronze compasses.

In Ancient Russia, a circular ornament of small regular circles was widespread. A steel circular cutter was found during excavations in Veliky Novgorod.

Pencil got its name from the merger of two Turkic words:punishment - black and tash - a rock. In the 16th century, the British found deposits of graphite. Fragile rods were placed in an elegant frame made of reed or mahogany, and only at the end of the 18th century, the Czech J. Garmut suggested making writing rods from a mixture of crushed graphite and clay. The writing rods were called "kokhinor" - "unmatched."

Protractor - a tool for degree measurement and drawing angles, made of sheet metal or plastic.

Pattern - a thin plate with curved edges, used to draw curved (curved) lines that cannot be drawn with a compass.

Word eraser , it turns out, came from the abbreviated word "gumielastic", which translates asrubber.

Cooking room - a set of drawing tools and accessories, packed in a case.

Securing the material:

On the instructions of the teacher, students in a workbook, using drawing tools, draw vertical, horizontal and oblique lines, as well as circles.

The concept of GOSTs. Formats. Frame. Drawing lines.

Notebook, textbook "Drawing", ed. A.D. Botvinnikova, accessories, ФА4

D / Z:

Instruments, notebook, textbook, ed. A.D. Botvinnikova, issue fA4 (no font)

Learn:

Ideas about GOSTs, ESKD, formats, title block

Be able to:

Determine the thickness, style, line type when drawing graphics, format.

Exercise 1

Graphic work # 1

“Formats. Frame. Drawing lines "

Textbook "Drawing" ed. A. D. Botvinnikova p. 20, accessories, fA4

D / Z:

Instruments, notebook, textbook, ed. A. D. Botvinnikova, graph paper.

Learn:

Drawing design rules, stage-by-stage work on the drawing.

Be able to:

Accurately and efficiently work with drawing tools. Observe the rules for drawing up the drawing, line drawing.

Examples of work execution

Test tasks for graphic work No. 1

Option number 1.

What designation according to GOST has a format with a size of 210x297:

a) A1; b) A2; c) A4?

2. What is the thickness of the dash-dotted line if the solid main thick line in the drawing is 0.8 mm:

a) 1mm: b) 0.8 mm: c) 0.3 mm?

______________________________________________________________

Option number 2.

Select and underline the correct answers to the questions.

Where is the title block located in the drawing:

a) in the lower left corner; b) in the lower right corner; c) in the upper right corner?

2. By what amount should the axial and center lines protrude beyond the contour of the image:

a) 3 ... 5 mm; b) 5 ... 10 mm4 c) 10 ... 15 mm?

Option number 3.

Select and underline the correct answers to the questions.

What is the location of the A4 format allowed by GOST:

A) vertical; b) horizontal; c) vertical and horizontal?

2.. What is the thickness of a solid thin line if the solid main thick line is 1 mm in the drawing:

a) 0.3 mm: b) 0.8 mm: c) 0.5 mm?

Option number 4.

Select and underline the correct answers to the questions.

At what distance from the edges of the sheet the drawing frame is drawn:

a) left, top, right and bottom - 5 mm each; b) on the left, top and bottom - 10 mm each, on the right - 25 mm; c) left - 20 mm, top, right and bottom - 5 mm each?

2. What type of line are the center and center lines in the drawings:

a) a solid thin line; b) dash-dotted line; c) a dashed line?

Option number 5.

Select and underline the correct answers to the questions.

What dimensions according to GOST has the A4 format:

a) 297x210 mm; b) 297x420 mm; c) 594x841 mm?

2. Depending on which line the thickness of the drawing lines is selected:

a) dash-dotted line; b) a solid thin line; c) a solid main thick line?

Fonts (GOST 2304-81)

Notebook, textbook "Drawing", ed. A. D. Botvinnikova, accessories, graph paper.

D / Z:

Notebook, textbook §2.4 pp. 23-24, graph paper.

Learn:

Drawing font, the title block of the drawing.

Be able to:

Use font in drawing design

Types of fonts:

Font sizes:

Practical tasks:

Drawing font parameter calculations

Relates.

the size

Dimensions in mm

3.5

Height

uppercase letters

3.5

Height

lowercase letters

0.7 һ

2.5

3.5

Letter spacing

0.2 һ

0.7

0.1

1.4

2.0

2.8

The minimum distance between the bases of the lines

1.7 һ

6.0

8.5

12.0

17.0

24.0

Minimum spacing between words

0.6 һ

2.1

3.0

4.2

6.0

8.4

Letter thickness

0.1 һ

0.35

0.5

0.7

0.1

1.4

Test tasks

Option number 1.

Select and underline the correct answers to the questions.

What value is taken as the font size:

a) the height of a lowercase letter; b) the height of the capital letter; c) the height of the spaces between the lines?

Option number 2.

Select and underline the correct answers to the questions.

What is the height of the uppercase letter of rift # 5:

a) 10 mm; b) 7 mm; c) 5 mm; d) 3.5 mm?

Option number 3.

Select and underline the correct answers to the questions.

What is the height of lowercase letters that have protruding elementsc, d, b, p, f:

a) the height of the capital letter; b) the height of the lowercase letter; c) greater than the height of a capital letter?

Option number 4.

Select and underline the correct answers to the questions.

Do uppercase and lowercase letters differ in spelling?A, E, T, G, I:

a) differ; b) do not differ; c) differ in the spelling of individual elements?

Option number 5.

Select and underline the correct answers to the questions.

What does the height of the numbers in the drawing font correspond to:

a) the height of the lowercase letter; b) the height of the capital letter; c) half the height of a capital letter?

Dimensioning. The scale

Notebook, textbook "Drawing", ed. A.D. Botvinnikova, accessories.

D / Z:

Notebook, textbook §2.5-2.6, fA4 (vertical)

Learn:

Dimensioning rules

Linear

Corner

Numbers in drawings

R marks, diameter, square

Be able to:

Apply dimensional rules. Read dimensions in drawings. Use the scale correctly

Sizes are:

Signs that are used when applying dimensions:

L -

R -

Ǿ -

Exercise:

Apply dimensions

Scale –

Test tasks

Option number 1.

Select and underline the correct answers to the questions.

1. What length of the object must be indicated on the drawing, if it is equal to 1250 mm, and the scale of the image is 1:10:

a) 125: b) 1250; c) 12.5?

2. What letter should be applied in front of the dimension number when specifying the thickness of the part:

a) R; b)L; v)S?

Option number 2.

Select and underline the correct answers to the questions.

The drawing is scaled to 2: 1. How will the linear dimensions of the image relate to the linear dimensions of the projected object:

a) the image is larger than the actual size of the object; b) the image corresponds to the actual size of the object; c) is the image less than the actual size of the object?

Option number 3.

Select and underline the correct answers to the questions.

What scale is preferable for making a drawing of a part:

a) increase; b) decrease; c) natural?

2. What does the R mark in front of the dimension number mean:

a) the circumference; b) the diameter of the circle; c) the radius of the circle?

Option number 4.

Select and underline the correct answers to the questions.

Which option corresponds to the scale of the reduction:

a) M 1: 2; b) M 1: 1; c) M 2: 1?

2. What is the minimum distance between the outline of the image and the dimension line:

a) 5 mm; b) 7 mm; c) 10 mm?

Exercise to consolidate the material

(work with colored pencil)

Graphic work number 2

"Drawing of a flat part"

Textbook "Drawing" ed. A.D. Botvinnikova, accessories, ФА4 (vertical)

D / Z:

Notebook, textbook "Drawing", ed. A. D. Botvinnikova, accessories (compasses)

Learn:

Dimensioning rules, drawing design (fonts, lines).

Be able to:

Execute a drawing, apply the rules for applying dimensions, use drawing tools.

Cards - Quests

Option 1

2 option

3 option

4 option

Mates. Geometric constructions

Textbook "Drawing" ed. A. D. Botvinnikov, accessories (compasses).

D / Z:

Notebook, textbook "Drawing", ed. A. D. Botvinnikova, accessories (compasses), фА4, §15.2 -15.3 fig. 137

Learn:

Rules for constructing parallel and perpendicular straight lines, conjugation of angles, two parallel straight lines, a straight line and a circle and dividing a circle into equal parts, constructing regular polygons.

Be able to:

Perform geometric constructions using drawing tools. Read the drawing.

Pairing -

Consolidation of the studied material:

Complete a drawing of a door key

Conjugation of obtuse, acute and right angles

Geometric constructions

Division of a circle into 5 and 10 parts

Division of a circle into 4 and 8 parts

Division of a circle into 3, 6 and 12 parts

Division of a segment into 9 parts

Projection. Projection method. Projecting onto one projection plane

D / Z:

Accessories, 2 matchboxes, textbook "Drawing" ed. A.D. Botvinnikov p. 31-34 read.

Learn:

Basics of projection. Concepts: center, perpendicular, parallel

Be able to:

Analyze the shape of an object, display on a plane.

Acquisition of images on 2 projection planes.

Textbook "Drawing" ed. A. D. Botvinnikov, accessories, notebook.

D / Z:

Accessories, textbook "Drawing", ed. A. D. Botvinnikova §4 pp. 37-38.

Learn:

The rules for drawing a figure on a mutually perpendicular plane. Basics of the method of rectangular projection.

Be able to:

Be able to build projections on 2 projection planes.

The exercise:

Make models from matchboxes, as shown in fig. 56 a. Compare your drawings of the models with their visuals. Make yourself one more - two models of two or three boxes and complete their drawings.

Practical task:

Using a visual representation, construct a horizontal projection. Apply dimensions.

Review task:

Acquisition of images on 3 projection planes

D / Z:

Accessories, textbook "Drawing", ed. A. D. Botvinnikova §4-5 pp. 37-38 fig. 51.

Learn:

The order of projection on 3 planes. The number of views used in technical drawings. Principles for choosing the main species.

Be able to:

Draw a simple shape. Choose the number of species. Read a drawing of a simple form.

Oral work:

Frontally on the chalkboard build the third view of the part

Securing the material

Practical work:

Build the third according to these types. Scale 1: 1

Option number 1

Option number 2

Option number 3

Option number 4

Location of views. Local species. Tasks for drawing up drawings from scattered images

Textbook "Drawing" ed. A.D. Botvinnikov, accessories, notebook, tracing paper.

D / Z:

Accessories, textbook "Drawing", ed. A.D.Botvinnikova §5 fig. 55-56, scissors, glue, wire, matchboxes, colored paper.

Learn:

The order of projection on a plane. The number of views used in technical drawings. Principles for choosing the main species.

Be able to:

Make a drawing of a simple form, choosing the required number of views in accordance with GOSTs. Read a drawing of a simple form.

View –

What is called local view?

Securing the material

Write your answers in your workbook:

Option number 1

Option number 2

Practical work No. 3

"Modeling by drawing".

Textbook "Drawing" ed. A.D. Botvinnikov, wire or cardboard, matchboxes, glue, etc.

D / Z:

Accessories, textbook "Drawing", ed. A. D. Botvinnikova

Learn:

Methods of modeling according to the drawing.

Be able to:

Directions for work

To make a cardboard model, first cut out its blank. Determine the dimensions of the workpiece from the image of the part (Fig. 58). Mark (outline) the cutouts. Cut them along the outlined outline. Remove the cut out parts and bend the model according to the drawing. To prevent the cardboard from straightening after bending, draw a line from the outside with some sharp object in the place of bending.

A soft wire of arbitrary length (10 - 20 mm) must be used for modeling.

The order of construction of images in drawings

tools, textbook, notebook, tracing paper

D / Z:

§13, size A4, colored pencils, accessories.

Learn:

Be able to:

Build cuts and cuts, perform technical drawing of elements.

Securing the material

Exercise:

Option number 1 Option number 2

Securing the material

Exercise:

In the workbook, make a drawing of the part in 3 views. Apply dimensions.

Option number 3 Option number 4

Analysis of the geometric shape of objects. Rotation bodies. Group of geometric bodies

Textbook "Drawing" ed. A. D. Botvinnikov, accessories, notebook.

D / Z:

Accessories, textbook "Drawing", ed. A. D. Botvinnikova §10, 11, 16, colored pencils.

Learn:

Rules for the execution of drawings of geometric bodies.

The sequence of reading a group of geometric bodies.

Be able to:

Securing the material

Work on cards

Securing the material

Using colored pencils, complete the card assignment.

Geometric shape analysis

Drawing of a part for two given views

tools,

D / Z:

f A4, tools

Learn:

Be able to:

Analyze drawings, give an accurate verbal description of the object depicted in the drawing.

Obtaining axonometric projections of plane figures

Homework:

Repeat p. 7-7.2; complete the construction of table 1.

Equipment for students:

textbook "Drawing", ed. Botvinnikova A.D., workbook, drawing accessories.

Square in dimetric projection

Exercise:

Construct an isometric square

Triangle in dimetric Triangle in isometric

Hexagon in dimetric and isometric

Exercise:

Construct an isometric hexagon

Exercise:

Axonometric projections volumetric bodies

Textbook "Drawing" ed. A. D. Botvinnikov, notebook, tools.

D / Z:

Accessories, textbook "Drawing", ed. A. D. Botvinnikov p. 49 table No. 2, §7-8.

Learn:

Rules for constructing axonometric projections. Methods for constructing a volumetric part in isometric view.

Be able to:

Build axonometric images starting from the flat figures lying at the base of the part. Learn to analyze the resulting images.

Review task:

Construct a geometric figure on the horizontal projection plane.

Amount (build-up)

Clipping

Assignment task

Axonometric projection of a part with cylindrical elements

Textbook "Drawing" ed. A. D. Botvinnikov, accessories, notebook.

D / Z:

Accessories, textbook "Drawing", ed. A. D. Botvinnikov § 7-8.

Learn:

Rules for constructing a part with a curved surface. The general concept is "axonometry of a detail".

Be able to:

Analyze the shape of the part, the resulting image.

Ellipse -

Oval -

Algorithm for constructing an oval

1. Let's construct an isometric projection of a square - a rhombus ABCD

2. Let's denote the points of intersection of a circle with a square 1 2 3 4

3. From the top of the rhombus ( D ) draw a straight line to the point 4 (3). We get a segment D 4, which will be equal to the radius of the arc R .

4. Draw an arc that connects the points 3 and 4 .

5. When crossing a segment IN 2 and AS get the point О1.

When crossing a segment D 4 and AS get the point O2.

6. From received centers О1 and О2 draw arcs R 1 that connect points 2 and 3, 4 and 1.

Securing new material

! work in a workbook

Exercise:

Perform isometric projections of the circle parallel to the frontal and profile projection planes.

Drawing and pictorial representation of the part

Ф A4, tools, textbook

D / Z:

§12, tracing paper

Learn:

ZUN

Be able to:

Analyze the shape of the part, build 3 types of the part and apply dimensions.

Technical drawing

Textbook "Drawing" ed. A.D. Botvinnikova§9, accessories, notebook.

D / Z:

Accessories, textbook "Drawing", ed. A. D. Botvinnikova § 9

Learn:

Rules for performing a technical drawing and techniques for performing a part.

Be able to:

Perform axonometric projections depicting flat figures. Perform technical drawing.

Technical drawing –

Shading methods:

Securing the material

Perform a technical drawing of the part, two types of which are given in Fig. 62

Projections of vertices, edges and faces of an object

Textbook "Drawing" ed. A. D. Botvinnikova, accessories, notebook, colored pencils.

D / Z:

Accessories, textbook "Drawing", ed. A. D. Botvinnikova §12, фА4, colored pencils.

Learn:

Methods for selecting a point on a plane. Principles of constructing edges and faces.

Be able to:

Construct point and face projections.

? Problem

What is a rib?

What is called the apex of an object?

What is a subject line?

Point projection

Practical work:

Arrange the letter designations of the projections

points in the drawing of the part, marked in the graphic image.

Graphic work No. 9

Detail sketch and technical drawing

D / Z:

Tools, graph paper, ФА4, § 18

Learn:

What is a sketch. Sketching rules

Be able to:

Sketch in the required number of views. Execute the drawing according to the sketch.

What is calledsketch ?

Securing the material

Exercise tasks

Dimensioning based on the shape of the object

tools, textbook, notebook, tracing paper.

D / Z:

Rice. 113 (1, 2, 3, 5, 8, 9)

Learn:

The general rule for dimensioning a drawing.

Be able to:

Repetition and consolidation of the passed material.

Oral exercise

Practical work:

Cuts and cuts on geometric bodies

Elements of parts

SLOT - a groove in the form of a slot or groove on machine parts. For example, a slot in the head of a screw or screw where the end of a screwdriver is inserted when screwing it in.

GROOVE - an elongated recess or hole on the surface of the part, bounded laterally by parallel planes.

Lyska - a flat cut from one or both sides of the cylindrical, conical or spherical sections of the part. Flats are designed to be gripped with a wrench, etc.

FLOWING - this is an annular groove on the rod, technologically necessary for the exit of the threaded tool in the manufacture of a part or for other purposes.

KEY groove - a slot in the form of a groove, which serves to install a key, which transmits rotation from the shaft to the sleeve and vice versa.

CENTER HOLE - an element of a part that serves to reduce its mass, supply lubricant to rubbing surfaces, join parts, etc. Holes can be through and blind.

CHAMFER - turning on the truncated cone of the cylindrical edge of the part.

Exercise: Instead of numbers, write the names of the elements of the part

Exercise: Make an axonometric projection of a part

Practical work No. 7

Reading Drawings

Textbook, notebook, sheet.

D / Z:

Graph paper, §17

Learn:

To master the methods of constructing 3 types, analysis of the geometric shape of an object, to know the names of the elements of the part.

Be able to:

Analyze the drawing, determine the dimensions, give an accurate verbal description

Graphic dictation

"Drawing and technical drawing of the part according to the verbal description"

Format (notebook), tools

D / Z:

Tools, graph paper.

Learn:

Sketching rules

Be able to:

Determine the required and sufficient number of views for a given part. Choose the main view. Dimension.

Option number 1

Frame is a combination of two parallelepipeds, of which the smaller one is set with a large base in the center of the upper base of the other parallelepiped. Through the centers of the parallelepipeds, a through stepped hole runs vertically.

The total height of the part is 30 mm.

The height of the lower parallelepiped is 10 mm, length 70 mm, width 50 mm.

The second parallelepiped is 50 mm long and 40 mm wide.

Bottom step hole diameter 35 mm, height 10 mm; the diameter of the second stage is 20 mm.

Note:

Option number 2

Support is a rectangular parallelepiped, to the left (smallest) face of which a half-cylinder is attached, which has a common lower base with the parallelepiped. In the center of the upper (largest) face of the parallelepiped, along its long side, there is a prismatic groove. At the base of the part there is a through hole of a prismatic shape. Its axis coincides in the top view with the axis of the groove.

The parallelepiped is 30 mm high, 65 mm long, 40 mm wide.

Half cylinder height 15 mm, baseR 20 mm.

The groove width of the prismatic shape is 20 mm, the depth is 15 mm.

Hole width 10 mm, length 60 mm. The hole is located at a distance of 15 mm from the right edge of the support.

Note: when applying dimensions, consider the part as one-piece.

Option number 3

Frame is a combination of a square prism and a truncated cone, which stands with a large base in the center of the upper base of the prism. A through stepped hole passes along the axis of the cone.

The total height of the part is 65 mm.

The height of the prism is 15 mm, the size of the sides of the base is 70x70 mm.

The height of the cone is 50 mm, the bottom base is Ǿ 50 mm, the top is Ǿ 30 mm.

Bottom hole diameter 25 mm, height 40 mm.

The diameter of the upper part of the hole is 15 mm.

Note: when applying dimensions, consider the part as one-piece.

Option number 4

Sleeve is a combination of two cylinders with a stepped through hole that runs along the axis of the part.

The total height of the part is 60 mm.

Lower cylinder height 15 mm, base Ǿ 70 mm.

The base of the second cylinder Ǿ 45 mm.

Bottom hole Ǿ 50 mm, height 8 mm.

Top part of hole Ǿ 30 mm.

Note: when applying dimensions, consider the part as one-piece.

Option number 5

Base is a parallelepiped. In the center of the upper (largest) face of the parallelepiped, along its long side, there is a prismatic groove. There are two through cylindrical holes in the groove. The centers of the holes are spaced from the ends of the part at a distance of 25 mm.

The parallelepiped is 30 mm high, 100 mm long, 50 mm wide.

Groove depth 15 mm, width 30 mm.

Hole diameters 20 mm.

Note: when applying dimensions, consider the part as one-piece.

Option number 6

Frame is a cube, along the vertical axis of which there is a through hole: from above it is semi-conical, and then turning into a stepped cylindrical one.

The edge of the cube is 60 mm.

The depth of the semi-conical hole is 35 mm, the upper base is Ǿ 40 mm, the lower one is Ǿ 20 mm.

The height of the lower step of the hole is 20 mm, the base is Ǿ 50 mm. The diameter of the middle part of the hole is 20 mm.

Note: when applying dimensions, consider the part as one-piece.

Option number 7

Support is a combination of a parallelepiped and a truncated cone. The cone with its large base is placed in the center of the upper base of the parallelepiped. In the center of the smaller side faces of the parallelepiped, there are two prismatic cutouts. A cylindrical through hole Ǿ 15 mm was drilled along the axis of the cone.

The total height of the part is 60 mm.

The parallelepiped is 15 mm high, 90 mm long, 55 mm wide.

The diameters of the base of the cone are 40 mm (bottom) and 30 mm (top).

Prismatic cut-out length 20 mm, width 10 mm.

Note: when applying dimensions, consider the part as one-piece.

Option number 8

Frame is a hollow rectangular parallelepiped. There are two conical lugs in the center of the upper and lower base of the case. A cylindrical through hole Ǿ 10 mm passes through the centers of the tides.

The total height of the part is 59 mm.

The parallelepiped is 45 mm high, 90 mm long, 40 mm wide. The wall thickness of the parallelepiped is 10 mm.

The heights of the cones are 7 mm each, the bases Ǿ 30 mm and Ǿ 20 mm.

Note: when applying dimensions, consider the part as one-piece.

Option number 9

Support is a combination of two cylinders with one common axis. A through hole passes along the axis: from above it is a prismatic shape with a square base, and then a cylindrical shape.

The total height of the part is 50 mm.

Lower cylinder height 10 mm, base Ǿ 70 mm. The diameter of the base of the second cylinder is 30 mm.

The height of the cylindrical hole is 25 mm, the base is Ǿ 24 mm.

The side of the base of the prismatic hole is 10 mm.

Note: when applying dimensions, consider the part as one-piece.

Test

Graphic work No. 11

"Drawing and pictorial representation of the part"

A3 format, tools

D / Z:

Tools, notebook, textbook.

Exercise:

On an axonometric projection, build a drawing of the part in the required number of views at a scale of 1: 1. Apply dimensions.

Graphic work No. 10

Part Sketch with Construction Features

tools, textbook, graph paper

D / Z:

Tools, graph paper.

Learn:

Sketching rules

Be able to:

Sketch, dimension correctly

Exercise:

Draw a drawing of the part in which the parts have been removed according to the markings applied. The direction of projection for building the main view is indicated by an arrow.

Graphic work No. 8

Detail drawing c transformation of its form "

tools, ФА4, textbook

D / Z:

Tools, graph paper.

Learn:

Be able to:

Execute drawing

The general concept of transforming a form. Linking a drawing to markup

Textbook, notebook, graph paper, accessories

D / Z:

Tutorial fig. 151 (to get acquainted), fA4

Learn:

Be able to:

Analyze the shape. Draw in orthogonal rectangular projection.

Graphic work

Execution of a drawing of an object in three types with the transformation of its shape (by removing part of the object)

Exercise:

Complete the technical drawing of the part, making notches of the same shape and size in the same place instead of the protrusions indicated by the arrows.

Logical thinking task

Topic "Drawing design"

Topic "Drawing tools and accessories"

Crossword "Projecting"

1. The point from which the projection beams emanate in center projection.

2. What is obtained as a result of modeling.

3. The face of the cube.

4. The image obtained during projection.

5. In this axonometric projection, the axes are located at an angle of 120 ° to each other.

6. In Greek, this word means "double dimension".

7. Side view of a person, object.

8. Curve, isometric projection of a circle.

9. The image on the profile plane of projections is a view ...

Rebus on the topic "View"

Rebus

Topic "Sweep of geometric bodies"

Crossword "Axonometry"

Vertically:

Translated from French "front view".

The concept in drawing on what the projection of a point or object is obtained.

The boundary between the halves of a symmetrical part in the drawing.

Geometric body.

Drawing tool.

Translated from the Latin language "throw, throw forward."

Geometric body.

The science of graphics.

Unit of measurement.

Translated from Greek "double dimension".

Translated from French "side view".

In the drawing, "she" can be thick, thin, wavy, etc.

Technical vocabulary of drafting

Axonometry

Algorithm

Analysis of the geometric shape of the object

Boss

Collar

Shaft

Vertex

View

Main view

Viewadditional

Local view

Screw

Sleeve

Overall dimensions

screw

Fillet

Geometric body

Horizontal

Dresser

Edge

Division of a circle

Division of a segment

Diameter

ESKD

Drawing tools

Tracing paper

Pencil

Drawing layout

Construction

Circuit

Cone

Curve curves

Circular curves

Pattern

Rulers

Line - leader

Extension line

Transition line

Dimension line

Solid line

Dashed line

Dash-dotted line

Lyska

Scale

Monge method

Polyhedron

Polygon

Modeling

Main inscription

Dimensioning

Drawing outline

Break

Oval

Ovoid

Circle

Circlein axonometric projection

Ornament

Axonometric axes

Axis of rotation

Projection axis

Axis of symmetry

Hole

Groove

Keyway

Parallelepiped

Pyramid

Projection plane

Prism

Axonometric projections

Projection

Isometric rectangular projection

Frontal dimetric oblique projection

Projection

Groove

Scan

The size

Dimensions overall

Dimensions constructive

Coordinating dimensions

Dimensions (edit)item details

The gap

Drawing frame

Edge

Drawingtechnical

Symmetry

Pairing

Standard

Standardization

Arrows

Scheme

Thor

Mate point

Protractor

Squares

Simplifications and conventions

Chamfer

Drawing formats

Frontal

Projection center

Mating center

Cylinder

Compass

Drawing

Working drawing

Drawing

Dimensional number

Reading a drawing

Washer

Ball

Slot

Scraping

Font

Hatching

Shading in perspective

Ellipse

Sketch

DRAWING LESSON OUTCOMES WITH ICT

Lesson topic: Graphic work No. 6 "Drawing of a part with the necessary section"

Lesson objectives:

to consolidate knowledge, skills and abilities to build drawings using cuts; develop spatial representations and spatial thinking; to form a graphic culture.

Lesson type: combined.

Lesson equipment: posters, handouts, multimedia projector, computers, screen

Literature:

b) in capital letters of the Russian alphabet.

5. If the taken out section is symmetrical and is located on the continuation of the secant plane, then the secant plane and the corresponding section:

a) mean;

b) do not mean

Student responses: 1-a; 2-a; 3-b; 4-b; 5 B

(Slide number 3) Task 2: Find errors in section notation

Answer: 2 sections are not indicated: A-A and B-B

Assignment 3: What types of incisions do you know?

Answer: the teacher summarizes the students' answers using Slide # 4

Question to the class: On what basis can these graphic images be divided?

Answer: By the number of cutting planes into two groups.

Question to the class: That is, the basis for the classification is the number of cutting planes. And what is this classification: simple or complex?

Answer: Simple classification as there is one basis for classification.

(Slide number 5) Task 4: Fill in the table "Location of the cuts"

Answer:(Slide number 6)

III... Explanation of the new material (7-10 min)

1. Formation of a frontal incision (Slide number 7)

2. Formation of a profile section. (Slide number 8)

3. Formation of a horizontal section (Slide number 9)

Explanation of the teacher: Those cuts that are made using one cutting plane are called simple, and those that are using 2 or more planes are called complex. Consider simple cuts. To describe the position of the secant plane, it is considered in relation to the horizontal plane of the projections.

Question to the class: How is the cutting plane positioned relative to the horizontal plane of symmetry?

Answer: It is parallel to the horizontal projection plane.

Explanation of the teacher. These cuts are called horizontal cuts. If the cutting plane is perpendicular to the horizontal plane, then such cuts are called vertical. Hang a vertical section drawing on the board. If the cutting plane is located at an angle to the horizontal plane of the projections, then such cuts are called (at this stage of the lesson, students already guess what the proposed cuts will be called, and with the help of the teacher they give names to the cuts) ... inclined. Place a drawing of an oblique section on the board. Two cases of vertical section are considered separately. Place drawings of the frontal and profile sections on the board. For them, also determine the position of the secant plane relative to the frontal and profile planes of the projections.

Question to the class:

Answer: Frontal and profile cuts.

Question to the class: What can you name each of these cuts?

Answer: Frontal and profile cuts

1. Derivation of the section construction algorithm (Slides No. 10-13)

Gymnastics for the eyes:

1. close your eyes;

2. blink;

3. Look out the window, look at the board, look out the window again.

We continue to work.

IV... Graphic work (15-20 min)

Explanation of the stages of performing graphic work (Slide number 14)

Open the file in the folder using the paint editor. Choose a suitable line thickness and follow the algorithm.

Algorithm for constructing a section.

1. Analysis of the geometric shape of the object.

2. Determination of the position of the cutting plane.

3. Mental representation of a cross-sectional figure.

4. Removing the lines of the visible contour related to the deleted part.

5. Converting the lines of the invisible contour to the visible.

6. Outline the contour of the section figure, perform hatching, mark the section.

Create a folder, call it your last names and save the results to your folder.

VCompletion of the lesson, delivery of homework (2 min)

Teacher: Open the diaries, write down the assignment at home (Slide number 15)

2. task! 3 - fig. 195 (a, b) page 150

(Explanation of homework).

Teacher: What lesson and homework questions do you have?

Thanks for your work. The lesson is over.

Graphic work number 4

Graphic work number 3

Graphic works No. 1 and No. 2

Writing fonts and drawing lines (A4).

Perform graphic work in accordance with the given image. Do not include dimensions.

Dimensioning (A4).

1) Draw frame, title block

2) Complete a complex drawing, add dimensions

Creation of mates (A4).

1) Construct a fillet of two arcs with radii R 1 and R 2 third arc of radius R(select the radii in accordance with the proposed figure).

2) Build ovoid according to the proposed drawing (radius of the original circle R = 40mm).

Graphic work number 5

Creation of mates (A4).

Draw a contour with the specified dimensions, performing a sequence of actions. Fillet radius R = 15mm(A4)

Outlines of technical forms (A3).

The format is arranged vertically.

The design technique and the sequence of the assignment:

1) Prepare A3 format. Draw inner frame and title block rectangle (185 x 55).

2) According to the dimensions plotted on the initial data, set the dimensions of the image and plan the outline rectangle in the drawing so that the outline of the part is located approximately in the middle of the format field.

3) Select the baselines of the outline of the part and draw them on the drawing. Draw the contour of the part in thin lines, carrying out all auxiliary constructions for the centers and points of conjugation of lines.

4) Apply extension and dimension lines (GOST 2.307-68. Section 2). Particular attention should be paid to the location of the dimension numbers above the dimension lines.

5) Make the outline of the drawing.

Graphic work no. 7

Axonometry (A3).

Draw an isometric view of plane figures.

Isosceles triangle isosceles trapezoid

Regular hexagon Regular pentagon inscribed in a circle R = 20
Graphic work number 8

Axonometric projections (A3).

Draw three axonometric projections of a regular hexagonal prism, a = 30mm, h = 40mm(A4)

Graphic work number 9

Complex drawing, axonometric projections (A4).

Draw a complex drawing - three projections of the part on the plane H (top view), V (front view), W (left view) according to its axonometric image.

Graphic work number 10

Section (A3).

Select the dimensions according to the proposed drawing and build two types and an axonometric projection of a truncated prism.

Graphic work number 11

Section, development (A3).

Truncated Prism Options d = 50, h = 55, a = 37, α = 45 0

1) Draw a complex drawing of a truncated hexagonal prism with an additional sectional view on the frontal projection plane

2) Draw an axonometric projection of a truncated prism

3) Draw a sweep of the prism

Graphic work№1

Drawing fonts

Purpose: to check the assimilation of knowledge on the topic "Drawing fonts"

Efremov secondary school

Educational area Technology

Subject Drawing

Graphic works

Completed

Full name of the student

Checked

Name of teacher

2013-2014 academic year

Graphic work№2

Dividing a circle into equal parts

Purpose: to check the assimilation of knowledge on the topic "Division of a circle into equal parts"

I-option - into 3 parts

II-option - into 5 parts

III-option - into 6 parts

IV-variant - into 8 parts

Graphic work№ 5

Target

I-option

Roller Steel 45

Graphic work№ 5

Drawing of parts with execution of sections

II-option

Target : check the assimilation of knowledge on the topic "Sections"

Finger Steel 50

Graphic work№ 5

Drawing of parts with execution of sections

III-option

Target: check the assimilation of knowledge on the topic "Sections"

Perform a sketch of the part on a sheet of A4 paper according to a visual image. Reveal the cross-sectional shape of the part. Label it if needed. Apply dimensions.

Roller Steel 45

Graphic work№ 5

Drawing of parts with execution of sections

IV-variant

Target : check the assimilation of knowledge on the topic "Sections"

Perform a sketch of the part on a sheet of A4 paper according to a visual image. Reveal the cross-sectional shape of the part. Label it if needed. Apply dimensions.

Axle Steel St.5