Machine clips with eccentric clamp and one movable sponge

Contents

INTRODUCTION

1 ROUTING PROCESS OF PART PROCESSING

2 DEVELOPMENT OF THEORETICAL BASING SCHEMES FOR ALL MECHANICAL OPERATIONS

PROCESSINGS

3 DEVELOPMENT OF PRACTICAL BASING SCHEMES FOR ALL MECHANICAL OPERATIONS

PROCESSINGS

4 DESCRIPTION OF ACCESSORY STRUCTURE

5 CALCULATION OF CLAMP FORCE REQUIRED

6 CALCULATION OF ACTUAL CLAMPING FORCE

7 CALCULATION OF ACCESSORY FOR ACCURACY

8 TECHNICAL REQUIREMENTS FOR THE DESIGN OF THE ACCESSORY

LIST OF LITERATURE

Introduction

The increase in machining efficiency largely depends on the level of mechanization and automation of machine tools. It is possible to significantly increase the machining productivity only with a sharp reduction in auxiliary time due to the use of progressive technological equipment, in particular fast-acting mechanical devices.

The most significant part of the total process tooling fleet is the devices used to install and secure workpieces of parts processed on a metal cutting machine.

Technological equipment is the most important factor in the successful implementation of technological progress in mechanical engineering. It is a set of working, measuring tools and devices used for basing, fixing and control of processed parts on various technological equipment: metal, woodworking machines, presses, measuring machines, etc., depending on the purpose of the technological equipment, its equipment differs. So, on CNC machines, additional devices that are not included in the machine kit, for example, devices for dimensioning outside the machine, are included in the tooling.

Mechanization and automation of the process of fixing blanks along with an increase in processing productivity provides: increased accuracy due to the stability of the clamping force, which reduces the fixation error; reduction of the share of manual labor; reducing the physical load of workers; the possibility of multi-station maintenance, since the worker is freed from the need for a long-term presence in one machine; regulation of the processing cycle, which is a prerequisite for automation of the process as a whole.

The process tooling is a variable part of the process tooling. The purpose of the technological equipment is to provide, change and expand the technological capabilities of the equipment, therefore, its service life is one order of magnitude or more lower than the service life of the equipment. In the current production, it is necessary to constantly update the technological tooling, and when changing the nomenclature of products or changing the requirements for their manufacture for a given composition of equipment, new productive conditions are ensured due to its complete or partial replacement.

The type of tooling systems is determined by the type of production. In mass production, the priority is the use of special indiscriminate and non-commissioning technological equipment; in serial production - specialized and unified technological equipment, which has the property of reversibility; in single production - special indiscriminate and universal - commissioning process equipment.

1 Part Routing Process

005 NC Turning

Trim end face (5) to size 59.5 mm, turn surface (1) to size ø52 mm,

cut the thread M52 × 1, boring the surface 4 in size ø45.2 mm, over

nost3 in dimension 48 mm, chamfers 2. 6. 12. 13, sharpen the groove 16 in dimension 1.5 × 1.5, 9

in size ø50 mm

010 NC Turning

Trim end face 10 to size 59 mm, turn surface 15 to size ø59.2 mm

015 NC Vertical Milling

Mill the flattery 14 in size 55.5 × 42 mm, drill 4 holes 2225

ø16 mm, thread M2 in them, drill the hole with ø6.5 mm and

ø2.6 mm, thread M3 in holes ø2.6

020 Drill

Drill holes 1821 ø4.2 mm and hole 11 ø25mm

025 Round grinding

Ground surface (15) to size ø59 mm

030 In-grinding

Ground surface (4) to size ø45mm

2 Development of theoretical basing schemes for all mechanical operations

processings

Basing is to position the workpiece in the selected co-ordinate system. Bases are the points, lines, surfaces that belong to a part and are used to base it.

Classification of bases:

a) By mode of manifestation

1) Explicit

2) Hidden

b) By purpose

1) Design

2) Process

3) Measuring

Design bases are bases that determine the position of a part in a product.

Process bases are bases that determine the position of a part during its processing.

Measuring bases are bases that determine the position of a part when measuring dimensions.

c) By the number of degrees of freedom that a part is deprived of during basing

1) Installation, deprives the part of three degrees of freedom

2) Guide, deprives the part of two degrees of freedom

3) Support, deprives the part of one degree of freedom

4) Double guide, deprives the part of four degrees of freedom

5) Double support, deprives the part of two degrees of freedom

The most common baselines are:

- on three planes

- along external cylindrical hole and end face

- along internal cylindrical hole and end face

- by center holes

- by plane and two holes

- by plane and two outer cylindrical surfaces

- by hole with weak taper

Чертеж.cdw

ПКСЭ.ТО.КП01.006 - Станочные тиски с эксцентриковым зажимом и одной подвижной губкой.spw