TMM Course Project on Press Briquette

Contents

Introduction

1 Dynamic linkage synthesis

1.1 Tasks and methods of dynamic synthesis and analysis of machine unit

1.2 Structural analysis of the mechanism

1.3 Kinematic synthesis of lever mechanism

1.4 Selection of scales. Description of construction of mechanism position plans

1.5 Description of planning of speed analogues

1.6 Calculation of reduced moments of forces

1.7 Calculation of reduced moments of inertia

1.8 Description of work diagrams, kinetic energy changes, Wittenbauer diagrams

1.9 Determination of flywheel inertia moment

1.10 Determination of the law of movement of the driving link

2 Power analysis of lever mechanism

2.1 Tasks of power analysis of lever mechanism

2.2 Determination of speeds and accelerations of mechanism points

2.3 Calculation of gravity forces of links, main vectors and main moments of inertia forces of links

2.4 Determination of reaction values in kinematic pairs of the mechanism

2.5 Power calculation of output link

3 Synthesis of gear mechanism

3.1 Design of cylindrical involute gearing of external gearing

3.1.1 Calculation of minimum number of teeth

3.1.2 Calculation of displacement factors and initial contour

3.1.3 Determination of engagement angle

3.1.4 Determination of radii of dividing circles

3.1.5 Determination of radii of main circles

3.1.6 Determination of radii of initial circles

3.1.7 Determination of perceived bias coefficients

3.1.8 Determination of equalization bias coefficients

3.1.9 Determination of inter-axial transmission distance

3.1.10 Determination of radius of troughs circles

3.1.11 Determination of vertex circle radii

3.1.12 Determination of wheel teeth height

3.1.13 Determination of the district dividing step

3.1.14 Determination of angular pitch

3.1.15 Determination of tooth thicknesses by dividing circle

3.1.16 Define profile angles at point on vertex circle

3.1.17 Determination of tooth thicknesses by vertex circles

3.2.18 Tooth thickness coefficients along vertex circumference

3.1.19 Determining the coefficient of end overlap

3.2 Geometric synthesis of planetary mechanism

4 Synthesis of cam mechanism

4.1 Main provisions and definitions

4.2 Initial data

4.3 Calculation of output link transfer functions

4.4 Basic sizing

4.5 Construction of cam profile

4.6 Calculation of spring stiffness factor

Conclusion

List of sources used

Project Description

Explanatory note 30 pages, 2 Fig., 8 Table, 2 sources.

THE GIVEN MOMENT OF FORCES OF INERTIA, THE GIVEN MOMENT OF FORCES OF RESISTANCE, THE MOMENT OF INERTIA OF THE FLYWHEEL, THE MAIN MOMENT OF FORCES OF INERTIA, THE MAIN VECTOR OF FORCES OF INERTIA, GROUP OF ASSUR, EVOLVENT, GEAR GEARING, PLANETARY REDUCER, CAM, PHASES OF THE MOVEMENT OF THE PUSHER, THE FLAT PUSHER, POWER SHORT CIRCUIT.

The purpose of the course project is to acquire the skills of the student to use various design methods and research mechanisms.

Kinematic and power calculations of the briquette press were made. According to modern methods, design calculations of the crank gear mechanism, open gear train, planetary reduction gear, and cam mechanism were carried out.

This explanatory note contains:

- dynamic synthesis of the lever mechanism (structural analysis of the mechanism, kinematic synthesis of the lever mechanism, determination of the operation of resistance forces and driving forces, determination of the moment of inertia of the flywheel, calculation of the true angular velocity of the initial link);

- power analysis of lever mechanism (kinematic analysis, power calculation of input link, power calculation of output link);

- synthesis of open gear train and planetary reduction gear (calculation of main parameters of gear engagement, determination of dimensions of main elements of planetary reduction gear box);

- synthesis of the cam mechanism (determination of the main dimensions of the cam, calculation of the spring stiffness coefficient).

The graphic part includes:

- dynamic synthesis of lever mechanism - 1 sheet A1;

- the dynamic analysis of the lever mechanism - 1 sheet A1;

- gearing synthesis - 1 sheet A1;

- synthesis of cam mechanism - 1 sheet A1.

Conclusion

As a result of the course work, he consolidated and generalized the knowledge and skills gained in the study of discipline, learned to apply course theory (kinematics, dynamics) in practice.

Performing a course project on the theory of machines and mechanisms, he mastered the skills of using common design methods and research mechanisms. He also mastered the methods of determining the kinematic parameters of mechanisms, assessing the forces that act on individual links of the mechanism, learned to creatively evaluate the designed mechanism from the point of view of its purpose - to provide the necessary parameters for the movement of the link.