Repair of rear spring bracket of ZIL-130 car

Contents

Contents

Introduction

1. Technological part

1.1 Structural features and operating conditions of the part

1. Repair drawing

1.3 Process requirements for defects

1.4 Causes of defects

1.5 Part Lot Sizing Calculation

1.6 Selection of rational repair method

1.7 Repair Process

1.7.1 Roadmap

1.7.2 Machining Operating Card

1.7.3 Sketch Map Repair Process

1.7.4 Welding Operating Map

1.7.5 Sketch map

1.8 Calculation of time norm for drilling operation

1.8.1 Calculation of time norm for welding operation

2. Structural part

2.1 Purpose and operation of the accessory

2.2 Sketch of accessory

List of sources used

Introduction

Car repair is an objective necessity.

The following economic and technical arguments lead us to this conclusion.

a) the need for the country's car fleet is partially met by the operation of repaired cars;

b) during repair, those elements of cars that are not completely worn out (parts that have partially lost their operability) are used;

c) the restoration of parts contributes to the saving of metals (compared to the manufacture of new cars) at the same time, the material consumption is 20... 30 times lower.

The need and expediency of repairing cars and units is due to the fact that parts, assemblies and units have an unequal structure. Repair of the car, even by replacing some of its parts and units with a small service life, will always be expedient and economically justified. The state of the car achieved during operation, when it keeps it operational, all the profit from its transport work is called the limit - this is a sign of the need for overhaul at a car repair enterprise. The cost-effectiveness lies in the use of a residual service life (about 70% of the parts can be reused after a small repair or without repair). The recovery of parts results in greater savings in materials and other different types of resources. For the optimal organization of car repair, it is necessary to create a base that would provide for: introduction of progressive forms of labor organization, new methods, methods and technologies of repair, increased level of mechanization and automation of production, introduction of ACS, robots and their complexes, flexible process equipment is capable of using high-precision equipment and accessories, mastering of unreleased CG with pre-repair and post-repair diagnostics, repair and restoration of foreign cars, implementation of centralized restoration of a wide range of parts, reduction of labor costs, provision of high level of repair and reliability of repaired units.

When performing a course project, the student solves the following tasks:

a) Consolidation of theoretical knowledge in the discipline;

b) Acquisition of skills in the development of technological processes for the repair and assembly of cars and units, the design of simple structures of devices for them, the ability to calculate the time standards of various part restoration operations;

c) Learn to use technical and reference literature, regulatory documents and GOST.