Mill Machine Wide Universal Assembly Drawing

Contents

Terms of Reference

Summary

Introduction

1. Fragmented Business Plan

2. Patent License Overview

3. Patent Study

4. Process Part

4.1. System analogue analysis and selection of machine prototype

4.2. Determination of machine accuracy class

4.3. Calculation of cutting modes

4.4. Engine brand selection and engine decryption

4.5. Selection of milling cutter, its sketch, dimensions and material

4.6. Structural diagram of TC

5. Design Part

5.1. Design Layout and Machine Description

5.2. Analysis and calculation of main motion mechanism parameters

5.3. Kinematic calculation

5.4. Selecting Bearings

5.5. Create fits and define tolerances

5.6. Defining Eccentricity

5.7. Calculation of machine failure time

5.8. Safety precautions

5.9 Description of Milling Head Assembly Drawing

6. Research part

6.1. Technical level studies

6.2. Dynamic Calculation Flowchart

6.3. Dynamic calculation

Conclusion

List of used literature

Application

Summary

Theoretical and economic justifications, design and technological developments for the creation of a wide-universal milling machine of the TZ.MRS.08.41 type are given.

The developed machine can be used in various branches of the national economy, having main and auxiliary workshops for metal processing.

39 pages; 7 liters.; 1 damn; 10 Table; 10 liters.

Introduction

Mechanical engineering is the basis of scientific and technological progress in various sectors of the national economy. The continuous improvement and development of machine building is related to the progress of machine tools, since metal cutting machines, together with some other types of technological machines, provide the manufacture of any new types of equipment.

The improvement of modern machines should ensure an increase in the speeds of working and auxiliary movements with a corresponding increase in the power of the main movement drive. It is of exceptional importance to improve the reliability of machines by saturating them with monitoring and measurement tools, as well as introducing diagnostic systems into machines.

Increased speeds of working and auxiliary movements are connected with further improvement of drive of machine tools, spindle units, traction devices and guides of rectilinear movement. Use of composite materials for cutting tools increases speed. A further increase in speeds will require the search for new structures using different physical principles and ensuring the high operability of responsible machine assemblies.

Modern metal cutting machines provide extremely high accuracy of machined parts. The critical surfaces of the most important parts of machines and instruments are processed on machines with an error in fractions of micrometers, and the surface roughness at diamond turning does not exceed one hundredths of a micrometer. Requirements for accuracy in mechanical engineering are constantly growing, and this, in turn, poses new tasks for precision machine tool building.

Specialists in the field of engineering technology, metal cutting machines and tools are at one of the most important areas of all scientific and technological progress. The objective is to ensure that, as a result of the fundamental improvement of processing technology, the creation of new metal cutting machines with microprocessor control, machine modules for flexible production systems, technical and organizational re-equipment of all branches of engineering and, on this basis, to ensure a significant increase in labor productivity. For successful creative work, machine-tool engineers must be fundamentally trained in mathematics, physics, computer engineering, have fundamental knowledge and skills in general engineering disciplines, and finally know their future specialty well. It is necessary to clearly represent the general essential properties and qualities that determine the technical level of metal cutting machines in order to create better samples and new models of machines.

The purpose of the MRS course project is to develop the design of a vertical-milling wide-universal machine.

The task is to ensure that the designed machine is compact, universal, meets all the requirements for technological, technical, vibration activity, safety.

At present and in the foreseeable future it will be necessary to create new models of machine tools, machine modules, flexible production systems, so future machine tool builders should possess the basics of machine tools design and their critical components. For the successful application of computer technology in design, it is necessary to know the content of the design process of all types of machine equipment, to know the methods of its modeling and optimization.

1. Fragmented Business Plan

Project name: development of special equipment for milling of ACP parts. Short name of the organization:

The purpose of the scientific and technical product (R&D) is a module for the manufacture of ACT parts. Short description of R&D: a module built on the principles of stabilized cutting processes, allows you to obtain surfaces after milling according to 7 and 8 squares.

Key technical parameters: the amount of preparations from 50 mm to 500 mm on length, machine dimensions within 1285х1215х1780, the power of the drive is 4 kW.

A short list of works during the creation of R&D: issuing a patent application, developing design and technological documentation for the manufacture of an industrial sample with calculations for strength and rigidity, vibration activity and reliability. Process Production Order. Development of manufacturing processes for original parts of the unit. Fabrication of parts, cutting and feeding mechanisms, assembly operations, settings of all products. Control and acceptance tests.

Requested amount of funding: 500 thousand rubles. The payback period of the project is 2-3 years.

Scientific and technical backlog for the project. Initial studies were carried out at the installations of the basic enterprise and machine structure. SibGAU showed the possibility of obtaining surfaces 5 and 6 of the accuracy quota, not inferior to the accuracy of machine tools of leading world manufacturers. Cutting modes and design of cutting tool are worked out. Theoretical studies have been performed to create a serial module.

Purpose of NTP: vertical milling machine for production of ACP products. R&D consumers: metalworking industry.

Evaluation of R&D: R&D as a whole to be created, representing an improved technology for manufacturing parts in small-scale production using resource-saving metal cutting methods.

Prospects for product improvement. The direction of improving consumer properties is to increase productivity, and operational characteristics are increased by 1.2 times in terms of accuracy life, warranty service is provided by the author's supervision developer, the time frame for achieving improvements is 18 months after commissioning the first sample.

Form of R&D implementation: Sales in the form of a marketable product, services in mastering the technology of power cutting, installation and launch into production.

Status of work on the project: technical information is available. documentation for the prototype, degree of technological study: available according to cutting modes, drive power, stiffness.

Project Feasibility Study

Objectives and objectives of the project:

Development of design documentation and technical requirements of milling machine.

Development of VO, SS, RF drawings.

Mastering the production of milling machines.

The project is implemented by the TMS department.

Project Content

The general purpose of the project is the manufacture and implementation of machine tools.

Characteristic: a machine that meets the requirements that allow it to be competitive with similar production models.

The expected result is the documentation of the production and implementation of the machine of a new modification .

Organizational form of the project implementation: demonstration at regional exhibitions; production and distribution of advertising prospectuses describing the technical characteristics of the machine.

Project timeline: 05.09.2008.

Solvent demand forecast

Markets: Machinery, automotive industry.

Demand dynamics: year-round - constant. When implementing the project, resource costs are taken into account according to the financial plan.

Business project effectiveness

Social efficiency: the development of technology and society .

Analysis of the long-term impact of the project: increasing the sales of machines; improved technical characteristics of the machine.

Adverse effects: production of specialized machines with a limited range of actions.

To Create a Structural Grid

1. Horizontal lines are drawn at equal distances one more than number of group gears (3). The field between the two horizontal lines is allocated for one multicast (two-gross).

2. At equal distances, 8 vertical lines are drawn according to the number of speeds in the drive, the distance between the lines is equal to the logarithm decimal.

3. Next to the field indicates the number of transmissions in group Pi and its characteristic xi.

4. On the middle of the upper horizontal line, a point O is marked, from which rays are symmetrically drawn as Pi and the distance between the ends of the rays for the next horizontal equal xi. multiplied by logarithm [theta].

5. Beams for the second group transmission are similarly drawn from each obtained point on the second horizontal. According to the structural grid, it is possible to determine the number of speeds, the number of group gears and the order of their location, the number of gears in each group, the characteristics of the group, that is, their place in the order of kinematic inclusion of the control ranges of group gears, which are equal to waveto the degree = the number of intervals of the logarithm from sound, enclosed between the two extreme rays leaving one point, the ranges are adjusted on intermediate shafts.

The structural grid does not give the actual values ​ ​ of the number of revolutions and gear ratios in the groups, therefore, a graph of the number of revolutions (rotation speed graph) is also plotted.

5.9. Mill Head Assembly Drawing Description

Assembly drawing of the mill head of the vertical milling machine: TZ.MRS.08.41.00.00.000.SB

Vertical spindle 5 is mounted in special housing 1.

Spindle is placed in movable sleeve 4. The lower spindle support 30 is a radial thrust ball double bearing, a 2T installation scheme without a ring. Upper support 29 - radial-thrust ball double bearing, 2O installation diagram without rings. Axial loads are accepted by thrust ball bearings.

Attach the tool with the help of shompole 6.

Conclusion

In this course project, a special-purpose vertical-milling machine was developed.

The machine design was developed, the main technical characteristics of the drive were determined, the bearings of the spindle assembly were selected, the structural grid and the spindle speed graph were built. Drawings are made on five sheets. The first sheet shows the part being machined on the machine we developed. The second sheet shows a general view drawing of a vertical milling machine in two projections. On the third - kinematic diagram of the machine with structural grid and rotation speed graph. On the fourth - the design of the vertical milling head. On the fifth sheet, a working drawing of the spindle itself was developed.