Design of the main motion drive of the 1K62 lathe with switching speeds from electromagnetic couplings

Contents

INTRODUCTION

1. JUSTIFICATION OF MACHINE TECHNICAL CHARACTERISTICS

1.1. Defining Processing Modes

1.2. Determination of revolutions

1.3. Determination of supply quantity

1.4. Determination of main motion drive power

2. DEVELOPMENT OF KINEMATIC SCHEME OF MAIN MOTION DRIVE

2.1. Structural grid. Rotation speed graph

2.2. Defining Tooth Numbers

3. DYNAMIC CALCULATION OF MAIN PARTS OF THE DRIVE

3.1. Defines torques on shafts. Shaft calculation

4. GEOMETRICAL CALCULATION OF GEARS

4.1. Definition of gear modules

4.2. Defining Wheel Design Dimensions

5. BEARING SELECTION

6. CALCULATION OF V-BELT TRANSMISSION

6.1. Determination of main parameters of V-belt transmission

7. SWITCHING OF SPEEDS FROM ELECTROMAGNETIC COUPLINGS

7.1. Application of electromagnetic couplings

7.2. Design features of controlled couplings

CONCLUSION

LIST OF LITERATURE

Task

Material of processed products; steel, cast iron.

Cutting tool material: hard alloy and fast-cutting steel, diamond.

Production type: serial.

Introduction

Mechanical engineering is the basis of scientific and technological progress in various sectors of the economy and economy. The continuous improvement and development of mechanical engineering is associated with the development of machine tools, since metal cutting machines, together with some other types of technological machines, provide for the manufacture of any other type of equipment .

Modern metal cutting machines provide extremely high accuracy of workpieces. Critical surfaces of the most important parts of machines and devices are processed on machines with an error in fractions of micrometers, and surface roughness at diamond turning does not exceed one hundredths of a micrometer. High-precision parts are obtained using machine modules, the use of which is possible only with the complete automation of all auxiliary operations through the use of manipulators and industrial robots; equipping flexible automated production machines with various instrumentation: modern machines use a set of measuring tools, sometimes very accurate, such as laser interferometers, to collect current information about the state of the machine, tool, auxiliary devices and obtain data on correct operation.

The designer designing the modern machine "machine" should make optimal technical decisions, both for its individual elements and the machine as a whole. Individual components include bearing systems, main motion and feed drives, spindle assemblies, control systems, tool changers. To synthesize the optimal design of any assembly or machine, a developed system of optimality criteria is required. These criteria depend on the machine requirements, the quality, accuracy of the machined parts, the properties of the tools used, the purpose of the units and the technical and economic indicators.

It is only possible to create the optimal design of a modern metal cutting machine, in particular an automatic line, when automating design.

The constructions of the created machines should be promising, technically and aesthetically perfect, economical. Only the optimal combination of a successful design solution, modern progressive technological processes of advanced forms of organization of production (providing increased productivity, reduced labor costs, maximum economic effect) and high quality of production can ensure the creation of a machine that meets the requirements of operation, economy and high aesthetic quality.

The purpose of the course project is to develop a drive for the main movement of the 1K62 turning-screw machine with switching speeds from electromagnetic couplings.

Conclusion

1. Based on the initial data for the design, the power of the turning-screw machine drive, processing modes, RPM numbers, and feed value was calculated.

2. The structural formula of the drive, the gear ratios of the pairs of gears of group gears is determined. A rational structural grid and a rotation speed graph were built, and shafts were also calculated.

3. Calculations of the gear module and design dimensions of the wheels were made, and the main parameters of the V-belt transmission were also determined.

4. The results of the calculations of shafts, gears indicate the correctness of the technical solutions taken and the sufficient mechanical strength and durability of the selected bearings and other parts of the drive.