Gdz practical drawing 18 reading assembly drawings. Rules for reading assembly drawings, conventions and simplifications. What is the sequence of reading an assembly drawing

18.08.2015 4689 575 Anufrieva Elena Yurievna

Lesson type:lesson in developing practical skills.

Lesson Objectives: formulate ideas about the algorithm for reading an assembly drawing; teach how to read simple assembly drawings; develop spatial thinking; continue to develop critical thinking, gain experience in communicative activities, and the ability to search for necessary information in various sources. continue to form positive motivation for students to study drawing, foster tolerance towards other people’s points of view, and responsibility for their actions.

Equipment:“Algorithm for reading an assembly drawing and a visual representation 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. Development of practical skills (practical work on reading assembly drawings).
5. Consolidation of educational material.
6. End of the lesson.

PROGRESS OF THE LESSON

I. Organizational moment

II. Introduction to the topic of the lesson

Teacher.Having purchased any item, we often become familiar with the operating rules of the purchased product before we begin to use it for its intended purpose. Many years ago I bought this coffee grinder and, like every owner of a new product, I first read the instruction manual. (A coffee grinder is demonstrated, a fragment of the instructions for its operation is read, which talks about how to adjust 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 accompanying the text of the instructions.
Of course, when dealing with the simplest mechanism or design, it is often enough just to look carefully at the product to understand its structure, make adjustments or minor repairs. What if we are talking about a machine, a car, an airplane? Or, for example, about cabinet furniture, an ordinary “wall”? In these cases, you need to be able to work with an assembly drawing, you need to be able to read it.
The topic of the lesson and its main task are reported: to learn to read simple assembly drawings.

III. Repetition of learned 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 item numbers of the parts are indicated on the leader lines first, the item numbers of the non-standard parts, and after the standard ones

4. Cross-sectional shading for two adjacent parts is performed with lines of different thicknesses, different inclinations, and the distance between the lines is the same

5. Shafts, keys, bolts, studs, all non-hollow bodies, when their cutting plane runs 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 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 defining the maximum external or internal contours of the product

· Dimensions according to which the product is mounted 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 done invisual scale;

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

11. On working drawings, parts withThe dimensions necessary for the manufacture and control of the manufacture of the part are entered.

12. The specification indicates the weight of the parts.

13. Are simplifications used in assembly drawings?

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

15. On assembly drawings put in all sizes;

16. The number of images of the part on the assembly drawing must correspond to the number of images of the part 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 standard.

10-14 – “3” 15-18 – “4” 19-20 – “5”

IV. Formation of practical skills

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

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

1. Determine the name of the product.

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

3. Determine the image scale.

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

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

6. Analyze the geometric shape of each part.

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

8. Analyze and set the size type.

9. Identify conventions and simplifications used in an assembly drawing or in a visual representation of an assembly unit.

10. Establish the assembly sequence of the product.

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

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

VI. End of lesson

1) Summing up the lesson. Giving students grades for their work in class.
2) Explanation of homework: § 6.1-6.4 On A4 format, draw a frontal section, highlighting with shading where necessary the details of the assembly unit.

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Lesson developed by teacher

Gorlovka General Educational

wcolaI – II No. 35

Dushkina I. A.

Lesson #18 (No. 4 in topic No. 13 “Reading and detailing assembly drawings”)

Date…………

Class 9

Subject: practical work on the topic “Reading assembly drawings for

plan"

Lesson objectives:

Educational: test the knowledge, skills and abilities of students in reading assembly drawings according to the given plan, consolidate the skills of reading assembly drawings and writing notes in a drawing font.

Educational: promote diligence, accuracy, and work culture.

Developmental: promote further development of memory, attention, eye; logical, analytical and spatial thinking.

Teaching aids, drawing tools, accessories and materials.

For the teacher:

textbook "Drawing.8 - 9kl." edited by V.K. Sidorenko

educational tables containing images of assembly drawings of simple assembly units, writing a drawing font

didactic materials (cards - assignments) edited by E.A. Vasilenko

table "Reflection"

electronic version of tables, cards (if necessary equipment is available)

For students: A4 format, checkered, task cards, drawing cards

accessories and tools.

Lesson type: control and correction of knowledge, skills and abilities

Lesson progress

1. Organizational stage:

Greetings

Organizing the students' workplace, issuing task cards, drawing tools, accessories and materials from the office fund for work in this lesson. Checking readiness for the lesson.

Checking student attendance.

Teacher filling out a class log

Announcing the topic of the lesson.

2.Updating basic knowledge and checking homework.

The teacher visually checks homework completion

3. Motivation for learning activities.

Today we are testing your knowledge, skills and abilities in reading assembly drawings, taking into account the learned conventions and simplifications that you received in previous classes and in self-preparation for practical work. I hope that this will allow me to successfully complete today’s practical work and begin studying the topic “Detailing Assembly Drawings” in the next lesson.

Declaring the goals and objectives of the lesson:

Today in class:

Students must independently read the assembly drawing according to the given plan.

Complete a technical drawing of the part specified in the task card

Identify deficiencies and gaps in knowledge in order to correct and fill them in home preparation for subsequent lessons

At the same time, we must be attentive, think, analyze, imagine and not waste time

Good luck in your work

4. Practical work. Formation of skills and abilities.

4.1. Issuance of individual cards - tasks 10 options (attached)

4.2. Answers to questions about the assignment, if any.

4.3. Independent work of students under the visual supervision of the teacher.

5. Summing up the lesson.

The teacher gives a general description of the learning activities in the lesson;

Collects works

Reflection: continue the sentence:

I didn't think that...

I will definitely…….

It seemed to me that…….

I didn't like it………

I think I will need………

6. Homework:

Repeat the material on the topic “Reading assembly drawings”

At the request of students, complete a creative task on the studied section (prepare an electronic presentation, make a crossword puzzle, rebus - optional)

Application

Option #1

Task 1.

Task 2.

Option No. 2