Manufacturing of rotor part

Contents

Introduction

1. Process Part

1.1 Purpose of the machine and assembly unit, which includes the specified

detail

1.2 Design and technological characteristics of the part

1.3 Coding of parts

1.4 Technical inspection of the drawing

1.5 Analysis of workability of the part design depending on its

processing in different types of production

1.6 Determination of production type and method of operation, calculation of value

batches of parts

1.7 Selection of Procurement Type

1.8 Selection of processing bases

1.9 Drawing up of machining route, selection of structure

operations and necessary equipment

1.10 Calculation of machining allowances

1.11 Calculation of cutting modes and technical rationing

1.12 Process accuracy calculation

1.13 Development of assembly process

2 Design part

2.1 Special tool

Conclusion

List of literature used

Applications

Introduction

During the training, students carry out course projects and work in a number of disciplines. The list of these disciplines is quite wide, since they form the basis for the further performance of thesis work, which is the final stage of student education.

The discipline "Engineering Technologies" largely determines the level of professional training of engineers in the specialty "Engineering Technology" and their ability to practically use the achievements of general theoretical and general engineering sciences.

The goal of the course project is to teach students to systematize, consolidate and expand theoretical and practical knowledge in their specialty, and to apply this knowledge in solving specific scientific, technical, economic and industrial problems.

During the course project, special attention is paid to the student's independent creativity in order to develop his initiative in solving various problems, which is an important detail when working independently in the conditions of modern production, the progress of science and technology.

The development of the manufacturing process of any part should begin with a study of its service purpose, an analysis of accuracy standards and other technical requirements. Next, a process plan is developed in the sequence defined by the relevant standards, taking into account the type of production. This links the technology to the service assignment of the part and ensures consistency of decisions made at different stages of technological preparation.

A drawing of the part Rotor and assembly drawing was issued to OJSC DZGO. Based on this data, describe the purpose of the machine and the assembly unit, which includes the given part, give the characteristic of the material from which the part is made, describe the design technology characteristic of the part, perform coding and perform its drawing in accordance with the established GOST.

In the course of work, they should gain knowledge and skills in the development of the technological process of machining machine parts, with the aim of independent creative work, consolidate the skills to work with scientific, technical and reference-regulatory literature, and apply the acquired knowledge in the field of computer engineering for engineering calculations.

1.4 Technical inspection of the drawing

The modern working drawing of the part usually contains high requirements, the strict execution of which ensures the performance of the functions intended for it by the manufactured part, the duration of its operability. These requirements are expressed as images, symbols, and text entries in the drawing field.

The working drawing of the part Rotor is made on a sheet of paper of standard A1 format.

The images shall determine the geometry of the part, the position of the main surfaces, the location of the threaded and internal cylindrical surfaces with exhaustive completeness. Their number should be the smallest if possible. The working drawing has three views, 4 sections.

Elements of a part after manufacture may be somewhat offset from each other, and their geometric shape deviates from a given theoretical one. Therefore, in the drawing, you specify the allowable deviations of the shape and location of the surfaces.

Microgeometry of its surfaces is of great importance for the operability of the part. Therefore, the drawing gives instructions about the permissible micro-irregularities (roughness) on the surfaces limiting the part. The most critical external cylindrical surfaces (0.8 μm) have the highest roughness requirements.

In the drawing, you specify the dimensions of all part elements and their relative positions. The actual dimensions of the manufactured part always differ from the specified nominal, defined by calculation or some conditions, by a small amount. Therefore, the limits of these deviations are specified in the drawing. Most of the surfaces of this part have an accuracy of 14 liters.

The specifications above the title block shall be included in the drawing when the information contained therein is impractical or cannot be expressed by legend. The technical requirements for the manufacture of the part contain: (a) information about the method of obtaining the workpiece ;

b) casting accuracy; c) hardness of the Rockwell blank - 36... 39; d) place of hardness check; e) unspecified casting radii and slopes; f) information on unspecified limit deviations - holes as per H14, shafts as per h14, others as per ± IT14/2, angles as per ± AT15/2.

Conclusion

In this course design, on the basis of quantitative and qualitative assessment, an analysis of the processability of the part design was made, the technological code of the part was compiled, on the basis of the existing machining route, proposals were made for its modernization and improvement.

As a result of a comparative analysis of the basic method of manufacture of a finished product with the proposed one, it was revealed on the basis of calculations that forging on a press is more economically feasible .

For the rotor part, a technological process was developed, the choice of draft and finishing bases for processing all surfaces was justified, equipment, accessory and cutting tool were selected, cutting modes were calculated and assigned, and technical rationing was made. Machining allowances have been calculated and assigned for the selected workpiece production method.

During the work, the necessary knowledge was obtained for the development of the technological process of machining the machine part. The skills and skills necessary to carry out future diploma work are developed.