Precision rationing and technical measurements gearbox calculation

Contents

Introduction

1 Tolerances of cylindrical gears

1.2 Calculation of gearing geometrical parameters

1.3 Assignment of gearing accuracy degrees

1.4 Selection of the side gap fillet type

1.5 Purpose of indicator sets for gear wheel monitoring

2 Calculation and rationing of accuracy of smooth cylindrical joints

2.1 Calculation and selection of fits of fixed connection with additional attachment

3 Caliber calculation

3.1 Calculation of plug gauges

3.2 Calculation of staple calibers

4 Calculation and selection of rolling bearings fits

4.1 Calculation and selection of rolling bearings fits on shaft and housing

4.2 Definition of Requirements for Shaft Mounting Surfaces and Housing Holes

5 Calculation of dimensional chain by theoretical-probabilistic method

5.1 Initial data

5.2 Detection of dimension chain

5.3 Calculation of the dimension chain

5.4 Check correct calculation of dimension chain

List of literature

Introduction

The standard is the most appropriate solution to a recurring problem in order to achieve a certain goal. The standards contain indicators that guarantee the possibility of improving the quality of products and their cost-effectiveness, as well as increasing their interchangeability. The standards contribute to the proportional development of all sectors of the country's national economy.

Through standards, the State Standardization System promotes:

improving the quality of work, quality of products and ensuring its optimal level;

providing conditions for the development of specialization in the field of design and production of products, reducing its labor intensity, metal consumption and improving other indicators;

ensuring the conditions for the broad development of exports of high-quality goods that meet the requirements of the world market;

linking product requirements to the country's defence needs;

the rational use of productive assets and the saving of material and labour resources;

Promoting international economic and technical cooperation.

In order to achieve the set goals, standards are constantly updated based on the achievements of science, technology and production, taking into account the complexity and systemic solutions to standardization tasks.

Tolerances of cylindrical gears

Source Data

Number of teeth of larger wheel Z1 = 44

Number of small wheel teeth Z2 = 25

Circumferential speed V = 11 m/s

Module m = 5 mm

1.3 Assignment of gearing accuracy degrees

According to [1], the degree of accuracy of the gearing according to the smoothness norm is assigned to 6 depending on the circumferential speed V = 11 m/s. According to the recommendations of GOST 164381, using the combination of accuracy standards, we assign a degree according to the kinematic norm of accuracy 7, according to the completeness of contact 7.