Drawing. Lesson 28 (second year, grade 9). 1. Topic “Reading assembly drawings. Practical work 8 "2. Gordovaya Nadezhda Semyonovna, teacher of drawing at the Vydrinsky secondary school of the Kabansky district, Republic of Buryatia 3. Subject: drawing. 4.Microsoft PowerPoint presentation 5.Microsoft PowerPoint, Internet Explorer, own developments, didactic material, textbook by I.A.Roitman, Ya.V.Vladimirov, demonstration models, tables. 6. At drawing lessons 7. For students of grade 9 8. Volume: 14 slides, 515 Kb.

Express survey 1. What is shown on assembly drawings: an image of a part or an assembly unit? Assembly unit 2. What are assembly drawings for? To assemble an assembly unit from individual parts 3. Are cuts and sections used when making assembly drawings? Apply 4.Where on the drawings indicate the names of the parts included in the product? In the table - specifications 5. Is it necessary to apply all dimensions of the parts included in the product on the assembly drawings? No. Only overall, connecting, installation 6. What do the numbers on the shelves of leader lines mean? Numbers of parts in the drawing 7. How to hatch three adjoining parts on assembly drawings? In different directions, with a change in the distance between the hatching lines 8. How to show in the section narrow cross-sectional areas, the width of which in the drawing is 2 mm or less? Shown in black 9. Remember what it means to "read the working drawing of the part"? Imagine its three-dimensional shape, dimensions, location of all its elements. Evaluation of results: (9, 8 correct answers - "5", 6.7 correct answers - "4", 4.5 correct answers - "3")

Comparative and comparative characteristics: Working drawing Assembly drawing Performed according to ESKD standards (formats, title block, lines, fonts, etc.) Images (views, sections, cuts), conventions and simplifications are used. Serves for assembling the product from parts All dimensions are given Overall, connecting, mounting Position numbers are given Presence of a table with data - specifications

Reading a drawing of a part means: using flat images on the drawing of a part, imagine its three-dimensional shape, design, dimensions, and location of all its elements. Reading an assembly drawing means: using flat images of an assembly unit, imagine its three-dimensional structure, the shape and dimensions of its individual parts, their location and connection, as well as the principle of operation of the product.

Order of reading assembly drawings. Find the product name. Determine which images (views, sections, cuts) are given in the drawing. Using the specification, consider the images of each part, determine their geometric shape. Determine how the parts are connected to each other. Find other data given in the drawing (dimensions, technical requirements, etc.).

Conclusion: According to assembly drawings, products are assembled, in addition, according to assembly drawings, they get acquainted with the design of products, their principle of operation, and also, according to assembly drawings, products are regulated in the process of work, installed (mounted) at the workplace, repair the product.

MBOU "Tagninskaya OOSh"

Zalarinsky district

Irkutsk region

Drawing and technology teacher

Tretyakova Elena Nikolaevna

Drawing lesson Grade 9

Lesson topic:Practical work No. 18 "Reading assembly drawings"

Lesson type: Generalization and consolidation of knowledge on the topic: "Assembly drawings"

Goals and objectives of the lesson:

Lesson equipment: multimedia complex, presentation created in the MS Power Point program, textbook by A. D. Botvinnikov, V.N. Vinogradov, I.S. Vyshnepolsky *AST * Astrel * Moscow * 2009 Tables 16, 17, 18, 19, geometric shapes, cards - tasks, a sample of the work performed.

Basic knowledge of students:- drawing, - assembly drawing, - assembly unit, - types of sections, - rules for applying dimensions, - rules for applying cuts, - rules for drawing leader shelves, - rules for applying position numbers.

Lesson control: students' performance at the blackboard, reading drawings from posters, explanations on the screen, independent work on cards.

Interdisciplinary connections:

Geometry.

• technology

Working methods and techniques: students' stories, comparison and reading of drawings, conversation, discussion, work with tables and posters, work with a textbook, individual (differentiated work on cards).

During the classes.

1. Organizational moment.

In the lesson, we will need felt-tip pens or colored pencils, a drawing tool.

Prepare your workplace, leave only the essentials.

2. Motivation of educational activity. (slide 1)

In the age of development of science and technology, any self-respecting person should be able to disassemble and assemble a simple product, be able to describe it in a conversation with an interlocutor, sketch a sketch of this product on a piece of paper.

(slide 2)

And in order to cope with the practical work and read the assembly drawing, we need to know the basic rules for reading the assembly drawing and answer some questions.

3. Formation of knowledge, skills and abilities.

Repetition and consolidation

What shape are these geometric shapes? (slide 3)

The teacher shows the geometric bodies on the slide, and the students must select them from the presented models, name and show them.

(slide 4)

- students' answers (All dimensions are not shown on the assembly drawings. They show overall, connecting, axial)

slide 5)

- answers of students (Frontal, horizontal, profile. Full, connection of part of the view and section, connection of half of the view and section)

4) How the hatching of different parts is shown in the section of the assembly drawing

(screw, key, bolt, washer, nut, shaft)? (slide 6)

- students' answers (These details in the section are not hatched if the cutting plane passed along the axis of symmetry)

(slide 7)

- student answers (Specification. The full name of the drawing being executed is entered, who checked it, the date the drawing was completed, the name of the product, the names of the parts in the product by position numbers, the material from which the parts are made, the dimensions of standard parts, for example, screws, bolts, nuts, image scale)

(Slide 8)

- answers of students (Shelves of callouts. Strictly vertically in order and strictly horizontally)

7) Read the assembly drawing orally ( slide 9), tables 16-19

According to the tables, students read assembly drawings according to the plan proposed in the textbook on pages 185-186 paragraph 35.

4. Practical work No. 18

Now I will remind you how to complete the task that you will be given for practical work (showing a card) and (slides 10-12)

Cards are different in complexity - the easiest, if successfully completed, are rated at "4" and the most difficult will be rated at "5"

There are 4 tasks in the card

Plan - diagram on the board (slide 13)

Draw dimension lines.

Correctly show the cut (apply shading).

Correctly show the number of parts in the drawing using shelves - callouts and correctly place the position numbers.

Repeat task (to understand the work being done)

And here are the cards with the completed task.

5) Practical work of students.

6) Checking and collecting cards, self-test.

THANK YOU FOR YOUR WORK! (Slide 14)

Literature: Textbook A.D. Botvinnikov, V.N. Vinogradov, I.S. Vyshnepolsky *AST*Astrel* Moscow*2009

View presentation content
"Reading assembly drawings"

MBOU "Tagninskaya OOSh"

Zalarinsky district

Irkutsk region

Drawing and technology teacher

Tretyakova Elena Nikolaevna

Drawing lesson in grade 9 Topic: Practical work No. 18 "Reading assembly drawings"

• Goals and objectives of the lesson:
• To form knowledge about the purpose, design of assembly drawings.
• Learn to compare and read working and assembly drawings, read specifications.
• Develop spatial thinking and memory as a condition for preparing for work and creative activity.
• To cultivate the desire to conscientiously and rationally perform educational tasks, to develop cognitive interest and logical thinking.
• To acquaint with the most important rules, symbols used in technical drawing, and their significance in modern science and production.
• To promote the development of students' culture of work, skills in the proper organization of the workplace, rational methods of working with a drawing tool, accuracy and accuracy in work.

• Color each piece with your own color.
• Draw dimension lines
• Correctly show the cut (apply hatching)
• Correctly show the number of parts in the drawing using shelves - callouts and correctly place the position numbers

Literature

Textbook A.D. Botvinnikov, V.N. Vinogradov, I.S. Vyshnepolsky *AST*Astrel* Moscow*2009

1. Figures 244-248 show assembly drawings of five different products, and Figure 249 shows illustrative images of six products. Some of them are given in figures 244-248, but not all. Determine which visual images, indicated by letters, represent exactly those products that are also contained in the assembly drawings. Write down in your workbook which of the visual images shows which product. Recording form: “On a visual image A is drawn ...” (take the name of the product from the assembly drawing).

Do not forget that not all assembly drawings are given illustrative images.

1. Read the assembly drawings indicated by the teacher in figures 244-248, following the sequence given in 35. Answer questions (including additional ones) in writing.

Additional questions for assembly drawings

Rice. 244. Drawing for reading

Back to Figure 244

1. Why item 37 is not shaded
2. Why is detail 2 cross-hatched?

Rice. 245. Drawing for reading

Back to Figure 245

1. Image B-B is a section or section?
2. Why is it given?

Rice. 246. Drawing for reading

Back to Figure 246

1. Why was incision A - A made?
2. What is the shape of item 5?

Rice. 247. Drawing for reading

Back to Figure 247

1. Why is detail 3 cross-hatched?
2. Why does the hatching of parts 1 and 2 have a different direction?

Rice. 248. Drawing for reading

Back to Figure 248

1. Which line represents the workpiece?
2. Why is a special screw (det. 3) not shaded in section A-A, but shaded in section B-B?

Complete technical drawings of one or two parts suggested by the teacher. An appropriate visual image will help you complete the work.

Rice. 249 Exercise task

Purpose and arrangement of assembly units included in practical work No. 19.

1. The handle (Fig. 244) is attached to the door leaf with screws, for which holes are provided on the base (det. 1). The handle consists of a base and a handle connected with a screw (det. 3).
2. Puller (Fig. 245) - a device for removing pulleys, bearings and other parts from the shafts.

The main parts of the puller: the rocker (det. 1), on which the grippers (det. 3) are put on, and the pressure screw (det. 2). The limiter (det. 4) fixed with screws (det. 5) prevents the gripper from slipping off the rocker arm.

The dismantled device is installed on the protrusions of the grips. The shooting of parts is carried out by rotating the pressure screw, into the hole of which a rod (lever) is inserted for this purpose.

1. Device (Fig. 246) - the jig is used when drilling holes on tiles, in this case having a rectangular ledge.

The base (det. 1) of the conductor is connected to the plate (det. 2) with pins (det. 5) and screws (det. 6). On top of the plate there is a guide sleeve (det. 3), a handle (det. 4) is screwed in from the side.

When drilling a hole, the protrusion of the workpiece is inserted into the rectangular hole of the base, the drill is guided through the sleeve from above.

1. The roller (Fig. 247) serves as a support for moving heavy objects. It is used in sets of several pieces. The roller (det. 2) with a rubber tire (det. 3) is attached to the base (det. /) with a bolt (det. 4) and a nut (det. 5) with a washer (det. c).
2. The consignment note jig (Fig. 248) is used when drilling, in this case, two holes with a diameter of 4.2 in the workpiece. The screw (det. 3) of the conductor is attached to the table of the drilling machine. After installing the workpiece, a plate (det. 1) is placed on it, which is fixed with a hook (det. 4). The hook provides easy and fast fastening of the conductor plate.

§ 37. The concept of detailing

Products consisting of several parts are assembled according to assembly drawings. But first, parts are made, and for this it is required to ensure the production of their drawings. The process of drawing up drawings of parts according to drawings of products consisting of several parts is called detailing.

Rice. 250. Assembly drawing and visual illustration of the stop

The essence of the detailing process will be clear from a comparison of figures 250 and 251. The stop, the drawing and visual image of which is shown in figure 250, is mentally divided into separate parts (Fig. 251, a). Figure 251, b shows the drawings of two parts, as a rule, they contain various indications, including those related to the manufacturing technology of the part. These designations are not given here. They are studied in the workshop on mechanical engineering drawing.

Rice. 251. Details of the stop: a - a visual image; 6 - drawing of a flying "hull"; c - drawing of the "rusk" part

1. Read the drawing of the product in the sequence given in § 35, paying special attention to the shape of the parts, their purpose and interaction.
2. Mentally disassemble the product into separate parts.
3. Select standardized parts for which drawings are not drawn up.
4. Determine the number of images needed when drawing each detail. At the same time, you cannot copy it from the drawing to be detailed. Screw (det. 3), for example, in Figure 250 is represented by three views. In the drawing of this part, one view is sufficient. Conversely, the rack (det. 1) in Figure 232 is shown in three views and a section, although the drawing of this part must contain at least five images.
5. Find the mating surfaces of parts, i.e., surfaces that interact with the surfaces of other parts. These include, for example, the surface of the pin and the hole for it (Fig. 246).

For mating surfaces, dimensions must be agreed. This means that, for example, the outer diameters of the sleeve and the hole where it is pressed into should be the same in size (Fig. 248).

When detailing, especially when applying dimensions, reference books should be used. So. keyway dimensions must be selected and applied in accordance with the recommendations given in section 33.1; dimensions of threaded products in accordance with the recommendations given in sections 31.3 and 32.2. Finally, it is advisable to use the directory when something is forgotten or met for the first time. For example, in the specification of the assembly drawing, the designation was found: “Splint 1.5x15 GOST 397-79”. You do not know what shape the part has and what the numbers in this entry mean. We learn from the reference book that the part has the shape shown in Figure 252. The designation should be understood as follows: cotter pin for holes with a diameter of d = 1.5 mm, cotter pin length 15 mm.

Rice. 252. Cotter pin

The use of reference books when reading and drawing up drawings, including during tests, unloads memory, allows you to get more new information, and speeds up work.

Performing detailing, it is necessary to draw each detail on a separate sheet, the format of which depends on the selected scale. Most of the data for the title block is taken from the specification of the assembly drawing.

Let's look at an example of detailing. Figure 253 shows a visual representation of the crank. Figure 254 shows his drawing. The crank transmits movement from the connecting rod to the shaft, converting the translational movement of the piston into rotational movement of the shaft (see diagram in Fig. 255). It is an eccentrically located finger (det. 2), connected by means of a shoulder (det. 1) with a shaft (det. 3), which reports rotational movement. A connecting rod is pivotally connected to the crank pin, coming from the piston.

Rice. 253. Crank

After reading the drawing (Fig. 254), we set according to the specification that it shows a crank. The main view and section are given. The main view contains a local section. The detail image 3 also contains a local section.

Figure 254. Assembly drawing of the crank

Detail 6 - the bolt has a head in the form of a hexagonal prism. The main dimensions of the bolt: Mb thread, rod length 25 mm. We learn this from the specification. Knowing the standard number, you can determine the "turnkey size" (it is 10 mm), head height (4 mm) and other dimensions.

Rice. 255. Scheme of the crank

Item 5 - a nut with an M6 thread has the shape of a hexagonal prism.

Part 2 is called "finger". It consists of three cylinders and a truncated cone. The conical end of part 2 is riveted, which ensures the immobility of the connection with part 1.

Key (det. 4) prismatic. The height and width of the key are 6 mm each, the length is 14 mm. We also learn this from the specification.

There are four holes in the "shoulder" part: one is conical, the second is cylindrical for a shaft with a diameter of 21 mm and two are also cylindrical for the Mb bolt. The bolt and nut are used to tighten the legs of the shoulder, which clamps the shaft. Parts 1 and 3 are connected with a parallel key.

Dimensions diameter 16 and 24 are connecting, size 160 overall.

It is not necessary to draw up drawings for parts 4,5 and 6, since they are standardized.

Thus, the drawing is read. The product is mentally disassembled into separate parts. Those of them are selected for which you need to draw up drawings, determining the required number of images, the position for the main view, marking the mating surfaces and selecting the scale.

Figure 256 shows a drawing of part 2 - a finger. In the drawing, where it is shown in connection with other details, the finger is shown in two images, and here in one, since the shape of the th is completely revealed by one view.

Rice. 256. Drawing details 2 crank

Figure 257 shows a drawing of the shoulder. Dimensions, which were not in Figure 254, were determined using an angular scale (see reference to work No. 20). The keyway dimensions 6 and 2.8 mm are taken from the reference table (see § 33).

Rice. 257. Drawing details 1 crank

The dimensions of the mating surfaces (for diameters 16 and 21) are mutually agreed.

The extreme or intermediate position of the part. In Figure 232, the image of the pusher is continued upwards with a dash-dotted thin line with two dots. What does this mean?

The pusher moves up and returns to its original position. On assembly drawings, the extreme or intermediate position of the part is shown with a dash-dotted thin line with two dots.

Please note that in view A (see Fig. 232) the handle (det. 2) is not shown. The shape of this part is determined by other images. In this view, it would cover the part of the handle that has a threaded hole. In such cases, the detail is not shown, and the inscription is made on the drawing: "The handle (det. 2) is not shown."

Image of border details. Sometimes on the assembly drawing it is necessary to show parts that are not included in this product. Part of such a part is shown in Figure 248. It is outlined with a thin line. This makes it possible to distinguish it from the parts included directly in the product.

Picture of sealing devices. To prevent leakage of liquid, steam or air between the moving parts of various taps, valves and pipelines, sealing devices are used.

One of them is an stuffing box (Fig. 242). For the sealing packing, it uses salted hemp, squeezed with a pressure sleeve. The sleeve (it is indicated by the arrow with the number 1) is connected to the body of the part by a thread. By tightening the sleeve, you can compress the packing so that it fits snugly against the cylindrical axis. In the drawing, the packing (it is indicated by an arrow with the number 2) is shaded in a cage as a non-metallic material (see Fig. 198).

Rice. 242. Stuffing box

When drawing stuffing boxes, the pressure sleeve is always depicted in the extended (initial) position.

Reducing the number and size of images. In assembly drawings, as well as in detail drawings, to reduce the number of images, you can connect half the view with half the section (Fig. 242 and 243). You can also connect a view part to a section part.

Rice. 243. Conditional image of repeating elements

To reduce the size of the image without reducing the scale, apply a break (see Fig. 242, top view).

Image of the same elements. Instead of several identical elements, it is allowed to depict only one of them on assembly drawings. So, for example, in Figure 243 only one bolt with a nut is shown (det. 3 and 4). The position of the rest is shown by the intersection of the center lines. And figure 242 shows only one of the four identical bolt holes.

1. Which line shows the extreme or intermediate position of the part on the assembly drawings? When is this image used?
2. How to understand the inscription on the assembly drawing: "The handle (det. 2) is not shown"?
3. When on the assembly drawing is the part outlined not by the main one, but by a thin line? What does it mean?
4. How to reduce the number of images on the assembly drawing, if you need to show both the external view and the internal structure of the product?

Practical work No. 18. Reading assembly drawings

1. Figures 244-248 show assembly drawings of five different products, and Figure 249 shows visual representations of six products. Some of them are given in figures 244-248, but not all. Determine which visual images, indicated by letters, represent exactly those products that are also contained in the assembly drawings. Write down in your workbook which of the visual images shows which product. Recording form: “On a visual image A is drawn ...” (take the name of the product from the assembly drawing).

   Do not forget that not all assembly drawings are given illustrative images.

2. Read the assembly drawings indicated by the teacher in figures 244-248, following the sequence given in 35. Answer questions (including additional ones) in writing.

Additional questions for assembly drawings

Rice. 244. Drawing for reading

Back to Figure 244

1. Why item 37 is not shaded
2. Why is detail 2 cross-hatched?

Rice. 245. Drawing for reading

Back to Figure 245

1. Image B-B is a section or section?
2. Why is it given?

Rice. 246. Drawing for reading

Back to Figure 246

1. Why was incision A - A made?
2. What is the shape of item 5?

Rice. 247. Drawing for reading

Back to Figure 247

1. Why is detail 3 cross-hatched?
2. Why does the hatching of parts 1 and 2 have a different direction?

Rice. 248. Drawing for reading

Back to Figure 248

1. Which line represents the workpiece?
2. Why is a special screw (det. 3) not shaded in section A-A, but shaded in section B-B?

Complete technical drawings of one or two parts suggested by the teacher. An appropriate visual image will help you complete the work.

Rice. 249 Exercise task

Purpose and arrangement of assembly units included in practical work No. 19.

1. The handle (Fig. 244) is attached to the door leaf with screws, for which holes are provided on the base (det. 1). The handle consists of a base and a handle connected with a screw (det. 3).
2. Puller (Fig. 245) - a device for removing pulleys, bearings and other parts from the shafts.

   The main parts of the puller: the rocker (det. 1), on which the grippers (det. 3) are put on, and the pressure screw (det. 2). The limiter (det. 4) fixed with screws (det. 5) prevents the gripper from slipping off the rocker arm.

   The dismantled device is installed on the protrusions of the grips. The shooting of parts is carried out by rotating the pressure screw, into the hole of which a rod (lever) is inserted for this purpose.

1. Device (Fig. 246) - the jig is used when drilling holes on tiles, in this case having a rectangular ledge.

   The base (det. 1) of the conductor is connected to the plate (det. 2) with pins (det. 5) and screws (det. 6). On top of the plate there is a guide sleeve (det. 3), a handle (det. 4) is screwed in from the side.

   When drilling a hole, the protrusion of the workpiece is inserted into the rectangular hole of the base, the drill is guided through the sleeve from above.

2. The roller (Fig. 247) serves as a support for moving heavy objects. It is used in sets of several pieces. The roller (det. 2) with a rubber tire (det. 3) is attached to the base (det. /) with a bolt (det. 4) and a nut (det. 5) with a washer (det. c).
3. The consignment note jig (Fig. 248) is used when drilling, in this case, two holes with a diameter of 4.2 in the workpiece. The screw (det. 3) of the conductor is attached to the table of the drilling machine. After installing the workpiece, a plate (det. 1) is placed on it, which is fixed with a hook (det. 4). The hook provides easy and fast fastening of the conductor plate.

18.08.2015 4689 575 Anufrieva Elena Yurievna

Lesson type:a lesson in the formation of practical skills.

Lesson Objectives: to form ideas about the algorithm for reading an assembly drawing; learn to read the simplest assembly drawings; develop spatial thinking; to continue the development of critical thinking, the acquisition of experience in communicative activity, the ability to search for the necessary information in various sources. continue the formation of positive motivation for students to study drawing, fostering tolerance towards someone else's point of view, responsibility for their actions.

Equipment:"Algorithm for reading an assembly drawing and a visual image of an assembly unit", test tasks, cards for group work.

Lesson plan:

1. Organizational moment.
2. Introduction to the topic of the lesson.
3. Repetition of the studied material.
4. Formation of practical skills (practical work on reading assembly drawings).
5. Consolidation of educational material.
6. End of the lesson.

DURING THE CLASSES

I. Organizational moment

II. Introduction to the topic of the lesson

Teacher.Having bought any thing, we often get acquainted with the rules of operation of the purchased product before we start using it for its intended purpose. Many years ago I bought this coffee grinder and, like every owner of a new thing, I first read the instruction manual. (A coffee grinder is demonstrated, a fragment of the instructions for its operation is read out, which deals with the method of adjusting the degree of grinding of coffee beans using a screw called “Screw - 7”). Where is this "important" screw - 7? The answer was immediately found when looking at the assembly drawing that accompanies the instruction text.
Of course, when dealing with the simplest mechanism or design, it is often enough just to carefully look at the product in order to understand its structure, make adjustments or minor repairs. And if we are talking about a machine, a car, an airplane? Or, for example, about cabinet furniture, an ordinary “wall”? In these cases, you must be able to work with the assembly drawing, you must be able to read it.
The topic of the lesson and its main task are reported: to learn how to read the simplest assembly drawings.

III. Repetition of the studied material / answer yes or no to the statement/

1. An assembly drawing is necessary for the manufacture of parts of an assembly unit

2. Positions, quantity, name and materials of parts included in the assembly unit - information contained in the specification

3. On the assembly drawing, the position numbers of the parts indicate on the leader lines, first the position numbers of non-standard parts, and after the standard

4. Hatching in a section for two adjacent parts is performed with lines of different thicknesses, different slopes, and the distance between the lines is the same

5. Shafts, keys, bolts, studs, all non-hollow bodies, when their cutting plane passes along their center line, are called not dissected in the drawing?

6.On the assembly drawing, it is allowed to place only the main view and the right side view using the necessary local sections, observing the projection relationship

7. List the name of the sizes in the order of the definitions you read

· Dimensions that determine the limiting external or internal outlines of the product

· Dimensions by which the product is fixed at the installation site

· Dimensions by which the product is attached to other products

Dimensional, installation, connecting.

8. A sketch is no different from a working drawing;

9. The sketch of the part is carried out ineye scale;

10. The working drawing of the part must containthe maximum possible number of species;

11. On the working drawings of the part withthe dimensions necessary for the manufacture and control of the manufacture of the part are set.

12. The specification indicates the weight of the parts.

13. Are simplifications applied to assembly drawings?

14. For all parts included in the assembly unit, position numbers are applied.

15. On assembly drawings, apply in all dimensions;

16. The number of part images on the assembly drawing must match the number of part images on the working drawing.

17. The specification is carried out on A4 format.

18. Images of sections of parts with a thickness or diameter of 2 mm or less are blackened;

19. Drawings containing images and data for the manufacture of parts are called assembly drawings.

20. Connections that are repeatedly found in the mechanisms of various machines are called typical.

10-14 - "3" 15-18 - "4" 19-20 - "5"

IV. Formation of practical skills

A) Familiarization of students with the algorithm for reading an assembly drawing and a visual image of an assembly unit (according to a table made on paper or a presentation slide).

Algorithm for reading an assembly drawing and a visual image of an assembly unit:

1. Define the name of the product.

2. Set the number of item names and their quantity.

3. Determine the scale of the image.

4. Analyze the number and nature of images in the drawing or on a visual representation of the assembly unit.

5. Determine the outline of each part of the assembly unit on all images of the drawing.

6. Analyze the geometric shape of each part.

7. Determine the types of connection of parts in this assembly unit.

8. Analyze and set the dimension type.

9. Identify the conventions and simplifications used on the assembly drawing or on a visual representation of the assembly unit.

10. Establish the assembly sequence of the product.

V. Consolidation and determination of the degree of assimilation of educational material by students

Work according to the textbook fig. 6.10 and 6.11 pp.80-81

VI. end of lesson

1) Summing up the lesson. Grading students for their work in class.
2) Explanation of homework: § 6.1-6.4 Draw a frontal section on A4 format, highlighting with hatching where the details of the assembly unit are needed.

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