Development of a tumbling drum drive for removal of burrs after stamping

Contents

Introduction

1 Development of kinematic diagram of machine unit

2 Engine selection. Kinematic calculation of the drive

3 Selection of gear materials. Define Allowable Stresses

4 Calculation of closed transmission

5 Calculation of open transmission

List of sources used

Introduction

The consistent development of the scientific and technical revolution is inextricably linked with the continuous improvement of mechanical engineering - the basis for the technical re-equipment of all branches of the national economy. Engineering technical activity based on scientific thought expands and updates the range of structural materials, introduces effective methods for improving their strength properties.

The development of mechanical engineering at the present stage is characterized by the wide introduction of advanced technologies, technical re-equipment and reconstruction of the existing production based on integrated mechanization and automation using automatic manipulators, built-in automatic control systems.

The successful development of modern engineering ultimately depends on the quality and depth of professional training of a specialist with higher and secondary education. The acquisition of all specialized knowledge and skills by students is based on good general technical training, which, among others, is based on the knowledge and skills gained in the study of the Mechanics discipline.

To understand the operation of a machine, you need to know what parts it consists of and how they interact with each other. And to create such a machine, you need to design and calculate each of its parts.

The execution of the course design is limited to the calculation of the electric drive of the plant. To do this, it is necessary to select the electric motor by load, select or calculate the reduction gear, calculate the open gear (belt, chain, cylindrical gear, conical gear), select, dis-

read and check the coupling, key, splined joint, frame, select and

justify the type of motor starting, calculate the section of the supply wires, calculate and select the control elements of the electric drive automatics.

Kinematic diagram of machine unit

Operating conditions of the machine unit.

The designed machine unit serves as a drive of a tumbling drum for removing burrs after stamping and can be used in stamping shops of machine-building enterprises in various directions. The drive consists of an electric motor, the shaft of which is connected to the drive shaft of the cylindrical helical reduction gear with the lower position of the gear through a linear belt gear, the driven shaft of the reduction gear is connected to the shaft of the tumbling drum through an elastic bushing-flange clutch. The designed drive operates in 2 shifts in reverse mode. The nature of the load is with small fluctuations .

Conclusion

In this course work, we chose the type of engine with a power reserve designed for two work shifts of 8 hours, we calculated the electric drive of the plant. For this, an electric motor was selected by load, a reduction gear was calculated, and open gear was calculated. Calculated the operation of the shaft. Development of the machine kinematic scheme. Determination of drive gear ratio. Determined allowable stresses.