Summary of the lesson "Drawing of a part from long products. Assembly drawing. Educational technological map". Properties of ferrous and non-ferrous metals. Drawings of parts from long products

The presentation is used when studying the topic in the 6th grade "Technology of manufacturing products from long products". The presentation is intended to familiarize students with the technological processes of manufacturing products from long products.

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"Presentation" Manufacturing technology of long products "

Municipal autonomous educational institution

"Lyceum No. 10" of the city of Sovetsk, Kaliningrad region

Manufacturing technology of long products

Purpose: to get acquainted with the main technological processes for the processing of metals and alloys, about the types of products from long products

Performed by the teacher of technology Zinchenko A.G.

MAOU "Lyceum No. 10"

Sovetsk, 2017

Technological operations required for the manufacture of parts from long products

• preparatory (selection of workpieces, marking);
• processing (cutting, bending, cutting, drilling);
• assembly (bolted, welded, soldered, riveted, etc.);
• finishing (cleaning, grinding, painting, etc.)

Reading a drawing of a part

Breakdown technological process for technological operations

Processing

Preparatory

Assembly

Finishing

Determining the sequence of preparatory operations

Determining the sequence of assembly operations

Determination of the sequence of finishing operations

Determination of the sequence of processing operations

Stock selection

Stripping

Riveted connection

Grinding

Markup

Bolted connection

Other operations

Drilling

Other operations

Other operations

Other operations

Equipment selection

Selection of fixtures

Tool selection

Development of sketches of technological operations and transitions

Equipment selection

Selection of fixtures

Tool selection

Equipment selection

Selection of fixtures

Drilling

Tool selection

Manufacturing process

receipt of blanks, processing of parts, maintenance and repair of devices, sharpening and straightening of tools, control and testing of finished products, packaging and storage of finished products, etc.

Technological process

• is part production process, which is associated with a change in shape and size, the state of the material when converting it into finished products.

Technological operation

• it is a complete part of the technological process performed on one workstation or machine.

Locksmith

In enterprises, these operations are performed locksmiths .

Locksmiths of mechanical assembly works assembled from separate parts and assemblies machines, engines, cars, tractors

Locksmiths-repairmen

Locksmiths - repairmen repair and adjust various equipment.

Locksmiths-toolmakers

make and repair tools and devices

Sources used

• Tishchenko A.T. Technology. Industrial technologies: Grade 6: methodological manual / A.T. Tishchenko. - M.: Ventana-Graf, 2016 .-- 192 p.
• Technology lessons using ICT. 5 - 6 grades. Methodical manual with electronic attachment. - M .: Planeta, 2011 .-- 384 p. - (Modern school).
• Photos are taken on the Internet.

Educational technological map.

The purpose of the lesson:

Educational : to form concepts about long products and methods of obtaining them.

Developing : develop the logic of thinking, develop creativity, skill

analyze, compare and draw informed conclusions based on the comparison.

Upbringing : to foster interest in learning, to foster diligence, accuracy,

perseverance, aesthetic feelings, a sense of responsibility for their work.

Planned results:

Subject - students get acquainted with the assembly drawings, perform a sketch of a detail of one of the products, learn to read the assembly drawing of the product.

Metasubject (UUD): regulatory - to transform a practical task into a cognitive one, communicative - the ability to work in a group while completing an assignment, the ability to cooperate with a teacher, cognitive - what is an assembly drawing? In what cases are two or more views shown in the drawings? etc.

Personal - the ability to conduct self-analysis of the work performed, the development of hard work and responsibility for the quality of their activities.

Basic concepts : assembly drawing, reading assembly drawing.

Lesson type: combined

Equipment : Samples of completed drawings, workbooks, textbook, drawing accessories.

During the classes.

1. Stage of motivation (self-determination to activity) - org. moment, we create a problem by showing a slide with an image of an assembly drawing.

Question : What are the rules for depicting technical drawings, sketches and drawings of parts made of wood and sheet metal.

What are the dimensions in the drawings?

2. Actualization of knowledge and fixing an individual difficulty in a problematic action.

In order to update knowledge, a short conversation is held with students, during which the following questions are asked:

- In what cases are two or more types shown in the drawings?

(Cognitive UUD - to acquire new knowledge in the process of observation and reasoning)

What are the dimensions on the assembly drawings? (regulatory UUD - independently read the assembly drawing);

(cognitive UUD) -What is an assembly drawing?

In order to update knowledge, a conversation is held with students, during which the following questions are asked:

1.What is the difference between assembly drawings for wood and metal products? (Cognitive UUD - to acquire new knowledge in the process of observation and reasoning)

2.Name the order of reading the assembly drawing from long products (Regulatory UUD - independently find the necessary information in the textbook)

3.What is an assembly drawing? What does the expression "overall dimensions" mean? (Cognitive UUD - to search and select the necessary information to solve an educational problem - in a textbook, encyclopedia, the Internet.)

3. Formulation of the topic of the lesson.

What do you think we will learn today?

Having ascertained the opinion of the children, the teacher clarifies the role of the drawing in the design of products (updating the knowledge of students, regulatory ECD - goal-setting)

4. Practical work.

The teacher organizes the actualization of the methods of learning actions sufficient to build new knowledge.

Trial action (task) - Consider Figure 61, complete a sketch of one of the parts in the workbook: screwdrivers. template, corner - or sketch a detail from your creative project.

Try the experiment: Stretch and release the springs of steel (hardened) and copper wire. Draw a conclusion about the elasticity of steel and copper.

Read the assembly drawing shown in Figure 62.

Fill out the table in your workbook

The teacher checks the correctness of the assignment, identifying difficulties in trial action.

5. Fixing difficulty:

Incorrect definition of dimensional. Incorrect determination of the number of views in the drawing (solutions to the problem)

6. Way out of the difficulty:

Once again, the teacher talks about the need to be able to read assembly drawings, to be able to carry out drawings of individual parts, thereby organizing students to explore the problem situation (UUD - communicative, joint problem solutions)

7. Reflection of educational activities.

At this stage of summarizing the lesson, the teacher asks the children questions, answering which he can judge the assimilation of this material.

Questions : What is an assembly drawing?

In what cases are two or more views shown in the drawings?

What is the difference between assembly drawings for wood and metal products?

What are the dimensions on the assembly drawing?

What new knowledge have you received for yourself?

Can the knowledge acquired today be useful in life?

The teacher asks the boys to evaluate their work in the lesson. (UUD personal - adequate understanding of the reasons for success / failure in educational activities.)

8. Cleaning of workplaces.

Goal:to familiarize students with the types of long products, methods of obtaining them and images of parts from long products in the drawings.

Equipment: samples of rolled products, assembly drawing, samples of products from long products.

During the classes

I. Repetition of the covered material.

1. Conversation on issues:

- What alloys from non-ferrous metals do you know?

- What are the properties of these metals?

- List the technological properties of metals and alloys.

- Name mechanical properties metals and alloys.

- Tell us about the use of aluminum.

2. Exercise for the development of observation, accuracy, accuracy.

The task. Determine which keyhole the key fits to.

3. Communication of the topic and purpose of the lesson.

II. Presentation of the program material.

1. Introductory conversation.

Teacher. In the 5th grade lessons, we examined sheet metal and wire. Remember how you get them.

For the manufacture of various products, other forms of rolled products are also required, which are obtained by rolling (squeezing) heated ingots between rolls of different profiles.

Often the shape of the future part is brought closer to the shape of long products, this allows to reduce metal waste and production time of the part.

There are various forms of long products, the most common of which are shown in the figure. Review and name them. (See Figure 1.)

Figure: one. Long products profiles: a - square; b - band; in - hexagon; r - a circle; d - corner; e - triangle; f - channel; s - rail

The teacher explains the main areas of application for the various rental profiles.

2. Practical task.

Sequence of execution:

1) Cut out two strips 100 × 240 mm from the sheet and carry out the experiment by loading the strips of sheet (see Fig. 2).

Figure: 2. Tin strip samples

2) It is necessary to load until the strip of sheet comes in contact with the table.

3) Write down the data in a notebook and compare the results.

3. Result of implementation practical assignment.

1) Assessment of the implementation of the practical task by students.

2) Generalization.

Teacher. In the section "Woodworking" we examined how the diagonals are depicted. Name these methods. ( With sketches, technical drawings and drawings.)

How are rental products depicted? ( Products from long products are depicted similarly.)

How is a multi-part product depicted? ( A product consisting of several parts is shown in assembly drawings..) (See Figure 3.)

How do you control angles? ( Angle control template.) (See fig. 4.)

III. Practical work.

Completing tasks:

1. Consider the rivet tool in Figure 3.

2. Sketch the template in your notebook.

3. Carefully read the assembly drawing (Fig. 3) and fill in the table.

IV. Lesson summary.

1. Checking and comparing the data filled in the table.

2. Evaluation of sketches and tables.

Manufacturing of products from long products. The connection of parts can be one-piece and detachable. One-piece joints of parts are obtained using rivets, welding, soldering, glue, detachable - using bolts, screws, studs, nuts. Manufacturing of long products in training workshops includes the following locksmith operations: marking using a ruler and caliper; cutting with metal scissors and a metal saw; cutting in a vice and on a slab; filing with a file; bending in a vice; connection of parts with bolts and nuts; joining parts with rivets; finishing of products. In production, these operations are performed by a locksmith.

Slide 10 from the presentation "Iron and Steel" to chemistry lessons on the topic "Ferrous metallurgy"

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Ferrous metallurgy

"Casting of metals" - Types of casting. The resulting metal is then purified. Protective covers, fluxes, deoxidizers. Fuse. Oxides are removed from the sculpture by grinding, and a clean surface is revealed. Smelting and casting of metals. The charge material, depending on the degree and nature of the contamination, is subjected to different processing. Casting. Used in pure form heavy metals: tin, lead, zinc.

"Metal processing" - B last years the production of church utensils was mastered: lamps of various shapes, frames for icons, crosses, panagias. If a scanned ornament is made on a metal background or wood, then a pattern is applied to the background surface, according to which, after a number of operations, the scan is soldered or glued. Already in ancient times in Russia there was an art of metal processing, which consisted in the fact that from wire of various thicknesses (smooth or flattened), openwork patterns resembling lace were made.

"Age of Metals" - Gold and platinum are found only in free form. Most often included in the Bronze Age, but sometimes it is considered a separate period. Tsar Cannon Tsar Bell Colossus of Rhodes. Application. Biological role. Stone tools were made from different types stone. I am hard, malleable and ductile, Shiny, needed by everyone, practical.

"Obtaining metals" - Metallurgy is engaged in obtaining metals from ores. The abundance of metals in nature. Very active metals. Average activity. Methods for obtaining metals. Electrolysis. The most important ores. Inactive (noble). Finding metals in nature. Nacl (melt) na + + cl- cathode (-) anode (+) na + + 1? na o 2cl - 2? cl2 (reduction) (oxidation).

"Steel" - Increases strength, wear resistance and gives antifriction and elastic properties. Figure: Heat and chemical heat treatment of metals. E - hard magnetic steel for permanent magnets. Silicon (Si) - is introduced for deoxidation. 1. For example, E21 - electrical steel, contains 2% silicon and about 0.1% carbon.

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Slide captions:

Technology lesson in grade 6 Lesson topic: "Sawing of billets from long products" (First stage) Compiled by: a technology teacher of the highest qualification category MCOU Svetloyarsk secondary school №2 named after F.F. Pluzhnikova V.P. Trofimov

LESSON OBJECTIVES To acquaint students with the types, features of files for various purposes, with the principle of their work as cutting tools. To teach to determine the file class and its purpose.

Checking the knowledge of students of previously studied educational material Checking the knowledge of students using task cards of different levels of complexity (4-6 students). Answers to questions (by the rest of the students): 1. What are the main parts of a hacksaw? 2. List the rules safe work locksaw. 3. For what purpose on the workpiece in the place of cutting is cut with a triangular file? 4. How is a long piece cut?

Presentation of new material: "Sawing of billets from long products" Sawing is cutting off a workpiece of a small layer of metal (allowance) using files to obtain the exact dimensions indicated in the drawing. Files are made from tool steel.

File elements

File types by cross-sectional shape

File working part length Ordinal numbers 1 2 3 4 5 6 7 8 Working part length, mm 100 125 150 200 250 300 350 400

Types of file cuts.

Name Number of main cuts per 10 mm of file length Cut number Application Grooming 5 6 ... 14 0 1 Rough filing of workpieces to remove a large metal allowance (up to 0.5 mm) Personal 8 ... 20 12 ... 28 2 3 Fine filing to remove a small metal allowance (up to 0.15 mm) Velvet 20… 40 28 ... 56 4 5 Fine finishing, grinding and finishing of parts Types of file cuts.

File classes 0; 1- Bare files have a large cut, 5-12 teeth per 10 mm. Lengths. They are used for large processing. The thickness of the removed metal layer in one stroke is 0.2-0.5 mm. 2; 3 - personal - have an average notch, 13-26 teeth per 10 mm. length. These files are used when the main layer of metal has already been removed with a file. The thickness of the removed metal layer in one stroke is 0.1-0.3 mm. 4; 5 - velvet - have a notch of 42-80 teeth per 10 mm. length and are used for finishing and grinding surfaces. They remove a layer of metal with a thickness of 0.005 - 0.01 mm.

Types of files. Needles: a, b - flat; в - square; d, e - triangular; e - round; g - semicircular; h - olive-shaped; and - rhombic; k - trapezoidal; l - fillet

Laboratory and practical work Task number 1. 1. Fill in the table according to the given form. 2. Get acquainted with the file samples. 3. Determine the shape of each file. 4. Count the number of cuts per 10 mm file length. 5. Determine the type of incisions. 6. Determine the class (type) and purpose of the file 7. Enter all the data obtained in the prepared table. No. File form Number of cuts per 10 mm length Cut type File class (type) For which processing 1,2,3 is intended, etc.

Organizational and final part Analysis of typical errors and causes in determining the types of file. Evaluation of the work of each student Homework: Prepare for the second stage of the lesson: "Sawing billets from long products" Textbook "Technology". P. 95-99.