Wood cutting, parquet board manufacturing process

Contents

Contents

Contents

Introduction

1. Analysis of manufacturing process of floorboard

2.Analysis of equipment used in manufacturing the floor board

3. Purpose, characteristic and general arrangement of the DPA- machine

4. Process diagram and process calculations of the CPA machine

5. Kinematic diagram and kinematic calculations of CPA machine

6.Installation and adjustment of CPA machine

7. Cutting tool and its preparation for operation

8. Organization of work place and capacity of CPA machine

9.TPA- machine safe operation rules

Conclusion and conclusion

List of used literature

Appendix A (Specification)

Introduction

The development of processing centers, high-performance machines and automatic lines, as well as the achievement of high quality products, are possible only with the use of woodworking tools designed on the basis of advanced scientific and technological achievements, using design automation techniques. An important role is the rational purpose of processing modes, and the use of effective techniques for preparing the tool for operation and maintaining its operability.

The purpose of the course work is to calculate the cutting modes during the manufacture of the parquet board, as well as the design of the prefabricated frame saw used in its manufacture. Direct calculations of cutting modes in the course project are carried out for a specific part - piece parquet. The parquet board is selected as the most illustrative part .

To achieve this goal, the following main objectives must be achieved:

- Development of feasibility study for development of this topic of course work;

- Development of cutting processes during parquet board processing;

- Calculate cutting modes;

- Conducting literary and patent analysis;

- Calculation and design of the frame saw;

- Development of technological process of manufacturing, hardening and preparation of frame saw for operation;

- Organization of rational operation of the frame saw;

- Calculation of the required quantity of the instrument;

- Calculation of economic efficiency of proposed engineering solutions;

- Proposals for organization of safe operation during manufacture, preparation for operation and operation of frame saw.

The method of calculating the cutting modes and designing the tool can be used directly at woodworking enterprises in order to solve the main production tasks.

In the conclusion of this course project, the results of all calculations made in relation to specific processing conditions at the enterprise are given.

Organization of rational operation of the tool

The maximum efficiency of a woodworking tool with a given capacity is possible only if it is fully operational for as long as possible. The effectiveness of the tool also depends on the degree of loading and use. To increase production efficiency, it is necessary to organize the operation of the tool so that the amount of its breakage, the time of rework. On the other hand, the amount of process maintenance and the frequency of overflows depend on the nature of the tool operation.

At any intensity of operation and with any reliability of maintenance, the time of dulling of the tool and its sharpening is necessary. The sharpening must be timely. It is important to precisely select the tool sharpening time, since the tool is decommissioned at this time. Interruptions are too frequent to increase machine downtime.

Therefore, the workability of the tool is affected by the correct operation, the time of the tool without rework and the time of sharpening, the tool storage during off-hours.

Preparation of round saws includes operations related to preparation of disk, teeth and their repair. The composition and sequence of operations are determined by the initial state of the saw and regulated by GOST 1322986.

To control the end run-out of the saw disc, a special accessory is used. According to GOST 2464281, the end biennium is the difference between the largest and smallest distances from the points of the real end profile .

It is defined in section of end surface by cylinder of specified diameter. For saws with a diameter of up to 400 mm, the end run-out tolerance is 0.4 mm, the straightness tolerance is 0.1 mm.

To determine the deflection of the disk, use a linear motion sensor connected to the functional units of recording and output the result to the digital display. The control device organizes 4 cycles of operation: installation of the saw and execution of the first measurement; removal of the saw; setting the saw back and performing the 2nd measurement; obtaining an arithmetic mean measurement result. For our saw, the deflection value is 0.35 mm.

To obtain high-quality propyl, a saw forge is used. To do this, a special device is used. Folding bars are installed on fork-shaped holder connected to body by means of lever. Body is fixed on machine so that saw is located between bars. Moving the fork to the right and to the left with the screw until the bars touch the tips of the teeth of the rotating saw, the teeth are folded sideways. Moving fork on saw in radial direction, radial forging is performed. As a result of fouling, fouling pads are formed at the tips of the teeth. Within these platforms, the trailing angle of the cutting edges is zero. To avoid excessive friction, the pads shall not exceed 0.3 mm.

With a small production volume, sharpening of the teeth of disc saws equipped with hard alloy plates can be carried out on a universal sharpening machine of one of the following models: 3A64M, 3A64D, 3B642. To save hard alloy and grinding wheels main sharpening of teeth is carried out on rear faces, and auxiliary - on front faces. Usually, after two to three sharpens of dull saws, one sharpening is carried out on the rear faces of the teeth on the front faces.

If the steel part of the body is struck by the diamond circle, the tooth sharpening is performed in three stages:

- rough sharpening of tooth at an angle α + 6 ° an abrasive wheel 64C25...40 of CM2 To;

- tooth finishing at angle α + 2 ° with diamond circle ;

- finishing at angle α with diamond circle .

To sharpen saws with hard alloy plates at enterprises with a large production volume, domestic industry (AP Kirovsky machine tool plant) produces special semiautomata machines

Conclusion

In this course work, the processes of cutting, as well as tools and methods of its preparation in the manufacture of piece parquet were considered.

The manufacturing technology of this part allows you to most widely consider various cutting processes, analyze and identify shortcomings in production conditions at a particular woodworking enterprise. As a tool for calculation and design, based on patent search and analysis, I selected a disk saw.

In the process of analyzing the production conditions, it turned out that the tools do not meet a number of requirements for highly efficient enterprises.

Solving the above problems contributes to improving the quality of products, in particular parquet board, reducing the cost of its production, and therefore reducing the possible cost, increasing competitiveness and increasing sales. At the same time, the profit received by the enterprise increases, fixed production funds grow and staff working conditions improve.

Introduction

In a market economy, the goal of production is to respond quickly to changes in market structure.

Woodworking should be organized in such a way as to quickly rebuild to produce the necessary type of products. This is possible with modern automated and computerized machines. At the same time, modern equipment is significant, but not the only criterion for the quality of production. The use of the latest technology, the maintenance of advanced technologies and the production of high-quality products based on them is ensured, first of all, by the high skill and professionalism of workers and specialists.

The process engineer should know the basics of the theory of cutting wood and wood materials, the design of woodworking tools and woodworking machines, methods and technical means of complex automation of woodworking equipment, be able to solve practical problems in determining processing modes and equipment productivity while ensuring the required processing quality and high technical and economic indicators.

This course project is devoted to a comprehensive analysis of the technological process of manufacturing the floorboard, analysis of the equipment used to manufacture a given part, as well as analysis of the design and technological capabilities of woodworking machines with the aim of their constructive improvement and substantiation of optimal wood cutting modes at given parameters of the workpiece and finished part.