Amada VT-SS Manuel utilisateur

Z09M0886E-06

OPERATION MANUAL

PRESSURE FOLLOW-UP MECHANISMS

VT-SS

Thank you for purchasing our Pressure Follow-Up Mechanisms VT-SS.

This operation manual describes its method of operation and precautions for use.

Read this operation manual carefully prior to use. Store appropriately for ready reference.

Contents

1. Special Precautions

(1) Safety Precautions ........................................................................ 1

(2) Precautions for Handling ............................................................... 4

2. Features ............................................................................................. 5

3. Name and Functions of Each Section ............................................. 6

4. Installation and Connection

(1) Installation ..................................................................................... 8

(2) Connection .................................................................................... 8

(3) Pressure Signal Cable................................................................... 9

5. Operating Method

(1) Introduction.................................................................................... 10

(2) Operating Method.......................................................................... 11

(3) Electrode Projection Allowance, Stroke, and Pressure Allowance 12

(4) Pressure Diagram ......................................................................... 13

(5) Maintenance Management............................................................ 14

6. Product Specifications

(1) Specifications ................................................................................ 15

(2) Welding Cable ............................................................................... 16

7. Outline Drawings............................................................................... 17

-1-

VT-SS

1. Special Precautions

Before using, be sure to read this

operation manual to operate this

machine correctly. This operation

manual may include some items that do

not correspond to your use. However,

you are kindly requested to read only

the items related to your use.

(1) Safety Precautions

These precautions are shown for safe

use of our products and for prevention of

damage or injury to operators or others.

Be sure to read each of them, since all

of them are important for safety.

The meaning of the words and

symbols is as follows.

！DANGER

Denotes operations and practices that

may imminently result in serious injury

or loss of life if not correctly followed.

！WARNING

Denotes operations and practices that

may result in serious injury or loss of

life if not correctly followed.

Denotes operations and practices

that may result in personal injury or

damage to the equipment if not

correctly followed.

！CAUTION

These symbols denote

“prohibition”.

They are warnings

about actions out of

the scope of the

warranty of the product.

！These symbols denote

actions which

operators must take.

Each symbol represents

the contents that give

notice of DANGER,

WARNING, or

CAUTION to the

operator.

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VT-SS

Otherwise, an electric shock or injury will occur. When

internal inspection or repair is required, make contact with us.

Do not disassemble, repair, or modify this machine in

any case.

！DANGER

！

！WARNING

When welding, keep your fingers and hands away from

the electrodes.

Do not put your hands between the electrodes.

The welded part of a workpiece, electrodes and electrode

holder are very hot. Do not touch them; otherwise you may

be burnt.

Do not touch any welded part or electrodes during

welding and just after welding finished.

Application of a voltage out of the specified range can

cause fire and electric shock.

Apply the specified power supply.

Continuous operation after occurrence of a trouble such as

burning smell, abnormal sound, abnormal heat, smoke, etc. can

cause electric shock and fire. If such a trouble occurs,

immediately consult us or your distributor.

Stop the operation if any trouble occurs.

The welding machine generates a magnetic field and has

effects on the operation of the pacemaker while it is turned on.

A person who uses a pacemaker must not approach the

welding machine or walk around the welding shop while the

welding machine is in operation, without being permitted by

his/her doctor.

Persons with pacemakers must stay clear of the welding

machine.

If you look at the surface flash and expulsion directly

during welding, your eyes may be damaged.

Wear protective glasses.

1. Special Precautions

-3-

VT-SS

！

！CAUTION

Water splashed over the electric parts can cause electric

shock and short circuits.

Do not splash water on the product.

Do not bend, pull, or pinch any cable forcibly. If the cable is

damaged, it will cause an electric shock, short circuit, or firing.

Do not give excessive force to connecting cables.

Cables of insufficient current-carrying capacities and loose

connections can cause fire and electric shock.

If the welding cable is not connected completely, a spark will occur.

Connect the specified cables securely.

If the product falls or drops, injury may result.

Install the product on firm, level surface.

Do not put any combustible material around the welder. Surface

flash and expulsion can ignite combustible matter.

Keep combustible matter away from the welding machine.

If such a cover is used, it may be overheated and burn.

Do not cover the product with a blanket, cloth, etc.

Keep a fire extinguisher in the welding shop in case of fire.

Keep a fire extinguisher nearby.

Maintain and inspect the product periodically, and repair any

damage near by before starting operation. Tighten the welding

cable connecting section periodically.

Maintain and inspect the product periodically.

Put on protective gear such as protective gloves, long-sleeve

jacket, leather apron, etc. Surface flash and expulsion can burn

the skin if they touch the skin.

Protective gear must be worn.

Use of this product in a manner other than specified can cause

electric shock and fire.

Do not use this product for purposes other than welding.

After a recovery from the outage, the machine may be started or

powered suddenly, resulting in an injury.

When outage occurs, be sure to turn off the power supply.

1. Special Precautions

-4-

(2) Precautions for Handling

Do not install this product in the following:

-Damp places where humidity is 90% or higher,

- Dusty places,

- Places where chemicals are handled,

- Places where corrosive gas is generated,

- Places near a high noise source,

- Hot or cold places where temperatures are above 40C or below 5C, and

- Areas where water will be condensed.

In this machine, the linear guide (linear bushing) is used vertically. Accordingly,

grease or oil may drip, but this is not an accident. In particular, when a new

machine is used, lots of grease of oil will drip. In this case, wipe it off properly

during machine operation. If grease or oil sticks on the weldment, this may cause

a defect.

VT-SS

Clean the outside of the product with a soft, dry cloth or one wet with a little

water. If it is very dirty, use diluted neutral detergent or alcohol. Do not use paint

thinner, benzine, etc., since they can discolor or deform the product.

Between electrodes, do not put such a material other than the weldment as tool

and screw. Otherwise, the welding electrode will be damaged or a spark will

occur. When performing maintenance for this machine as a result of replacement

of electrodes, turn off the power supplies of the welder and control device in

advance.

Do not put a screw, a coin, etc., in the product, since they can cause a

malfunction.

Be sure to install the screws, which were removed for maintenance of this

machine, in their original positions. If they are installed in different positions, this

machine will be damaged or go wrong.

Operate the product according to the method described in this operation manual.

1. Special Precautions

-5-

VT-SS

2. Features

Ultra-small follow-up mechanism for slight amount of pressure

force for parallel-gap welding

Fine adjustment mechanism of electrode spacing

High performance mechanism reducing to the utmost capability

the friction and mass of the follow-up unit

2. Features

-6-

VT-SS

3. Name and Functions of Each Section

-7-

VT-SS

3. Name and Functions of Each Section

(1) Pressure adjusting knob

This knob is used to adjust the pressure at welding. Turn the pressure knob to set

the required pressure.

(2) Pressure scale

This scale is used to read the pressure at welding. For the relation of pressure

between "Pressure scale" and "Pressure spring specification", refer to the pressure

diagram (page 13).

CAUTION The pressure diagram represents theoretical values. To measure actual

pressure, use a pressure gauge or spring balance.

(3) Pressure sensor

The pressure sensor is used to make sure that pressure is applied to the weldment

at welding. This sensor outputs a signal when the electrode makes contact with the

weldment and the detecting dog is raised 1.5 mm.

CAUTION The pressure allowance should be 2.5 0.5 mm. If the machine is

operated when the pressure allowance exceeds 4 mm, its internal

mechanism will be damaged, resulting in a serious failure.

(4) Pressure spring

This pressure spring gives the pressure required for welding to the weldment.

Pressure spring specification (SS series): Maximum pressure 4/7 (N)

(5) Electrode holder

This part is used to give a welding current to the welding electrodes and fix the

electrodes.

(6) Welding electrode

This is an electrode rod for welding. Select a material and an end shape suitable for

your use. We prepare welding electrodes for various uses.

(7) Welding electrode fixing screw

This screw is used to remove or mount the welding electrode.

(8) Screw to supply power (from the transformer or power supply side)

Connect the welding cable from the welding transformer or welding power supply.

(9) Jumper line (secondary conductor) connecting screws

Item name: VP(T)-SS jumper line (0.5sq-100L)

Part number: 1042724

Model number: 10273-201-1

！

-8-

Fix this machine on a high-rigidity driving section for use. If the rigidity is

not enough, the welding quality may be lowered by flapping.

！CAUTION

When fixing the pressure follow-up mechanism,

perform drilling by referring to the drawing.

Secondary-side welding cable wiring Signal line wiring

Connect the welding cable. Connect signal cables.

(Refer to page 9.)

VT-SS

4. Installation and Connection

(1) Installation

(2) Connection

4. Installation and Connection

Short shaft specification

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