Cosen AH-250H User manual

INSTRUCTION MANUAL
AH-250H
Automatic Hitch Feed Metal Cutting
Band Saw (415V)
280 x 250mm (W x H) Rectangle
B040
Page 1
Instruction Manual for AH-250H (B040)
04/12/2014

Printed in Taiwan
NOTICE: Please read this instruction manual carefully to obtain a
thorough knowledge of installation, operation and maintenance. Please
remember the following: Correctly operate the machine as described in
the manual to prevent accident. Do not operate the machine by guesswork.
We suggest you always keep manual at hand and refer to it whenever you
are not sure of how to perform any procedures for AH-250H.
TECHNICAL ADVICE/ SPARE PARTS
Please contact the COSEN-representative in your local area in case you need any
technical advice or if you want to order spare parts.
Instruction Manual:
AH-250H Automatic Horizontal Bandsaw
Ver. 1—Date : 09/18/1998
Ver. 2 -- Date : 07/01/2003
VER.3 –Date :12/01/2010
©1995 by COSEN CO., LTD./ R&D DIVISION.
110 Ching-Fu Street Hsin-Chu 300, Taiwan, R.O.C.
Tel: [phone]~5 Fax: [phone]
No part of this publication may be photocopied or otherwise reproduced without the prior written
permission of COSEN CO., LTD.
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Instruction Manual for AH-250H (B040)
04/12/2014

Foreword
FROM THE MANUFACTURER
You have just purchased a machine manufactured by the COSEN Machinery
Industrial Co., Ltd. We‘d like to take this chance to express our appreciation to you
for being our valued customer. Any comment from you will help us to design a better
product or provide a better service for you.
The band saw machine will provide low cost cutting accuracy for many years if
the procedures for installation, operation, maintenance and troubleshooting are
followed. However, if there are questions, please contact our agent or our factory for
the nearest service or sales representative.
Enough, already. I hope you find COSEN as incredibly smart as I do. If you
have any suggestions for improvement, please tell us, we will appreciate your help.
“again”
Thank you so much for purchasing COSEN band saw machine.
MikeHuang
President
COSEN Machinery Industrial Co., Ltd.
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Instruction Manual for AH-250H (B040)
04/12/2014

I
TABLE OF CONTENTS
SECTION
PAGE
1
SAFETY RULES 1-1~5
2
GENERAL INFORMATIONS
2.1 INTRODUCTION 2-1
2.2 EQUIPMENT DESCRIPTION 2-1
2.2.1 SPECIFICATION 2-2
2.2.2 Identification of Main Parts & Terminology 2-3
2.2.3 Emergency Stop Button 2-4
2.2.4 Noise Level 2-4
2.2.5 Safety Devices and Guards 2-5~6
2.2.6 Specification of Electrical Equipment 2-7
2.3 GUIDE TO THE MANUAL 2-8
2.4 DOCUMENTATION 2-8
3
MOVING AND INSTALLATION
3.1 INTRODUCTION 3-1
3.2 MOVING THE MACHINE 3-2
3.3 INSTALLATION OF THE MACHINE 3-3
3.3.1 Safety Precautions 3-4
3.3.2 Initial Inspection 3-4
3.3.3 Space Required 3-4
3.3.4 Unpacking 3-6
3.3.5 Equipment Furnished 3-6
3.3.6 Installation Procedure 3-6
Fixing the Machine on the floor 3-7
Machine Leveling 3-7
Installation of Feed Roller 3-7
Cutting Fluid Supply 3-7
Hydraulic Fluid Supply 3-7
Electrical Connections (Power Requirement) 3-8
Installation Fire Control Devices 3-9
3.4 WORKING CONDITIONS 3-9
3.5 RESHIPMENT PROCEDURE 3-9
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Instruction Manual for AH-250H (B040)
04/12/2014

II
4
OPERATION INSTRUCTION
4.1 SAFETY PRECAUTIONS 4-1
4.2 PREPARATION FOR USE 4-1
4.3 CONTROLS DESCRIPTION AND OPERATION 4-2
4.3.1 Control panel 4-2
4.3.2 Manual model 4-8
4.4 TEST RUN THE MACHINE 4-15
4.5 HOW TO REPLACE THE SAW BLADE 4-16
4.6 HOW TO LOAD THE WORKPIECE 4-18
4.7 PROCEDURES TO STOP AN OPERATING PROCESS 4-19
4.8 PROHIBITED MEASURES ON THE MACHINE 4-20
5
ELECTRICAL SYSTEM
5.1 INTRODUCTION 5-1
5.2 ELECTRICAL COMPONENTS LAYOUT 5-1
5.3 ELECTRICAL CIRCUIT DIAGRAMS 5-2
6
HYDRAULIC SYSTEM
6.1 INTRODUCTION 6-1
7 BAND SAW CUTTING A PRACTICAL GUIDE
7.1 INTRODUCTION 7-1
7.2 BAND SAW BLADE SELECTION 7-1~3
7.3 Some Sawing Practices 7-4
7.3.1 Selection of Saw Pitch 7-4
7.3.2 Material Size and Saw Pitch 7-4
8
MAINTENANCE & SERVICE
8.1 INTRODUCTION 8-1
8.2 BASIC MAINTENANCE 8-1
8.3 MAINTENANCE SCHEDULE 8-1
Before beginning of work each day 8-2
After ending work each day 8-2
Every monthly maintenance 8-2
Every six months maintenance 8-3
8.4 STORAGE CONDITION OF THE MACHINE 8-3
8.5 TERMINATING THE USE OF THE MACHINE 8-4
8.6 OIL RECOMMENDATION FOR MAINTENANCE 8-5
9
SYSTEM TROUBLE SHOOTING
9.1 INTRODUCTION 9-1
9.2 PRECAUTION 9-1
9.3 GENERAL TROUBLES AND SOLUTIONS 9-2
9.4 MOTOR TROUBLES AND SOLUTIONS 9-3
9.5 BLADE TROUBLES AND SOLUTIONS 9-4
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Instruction Manual for AH-250H (B040)
04/12/2014

III
9.6 SAWING PROBLEMS AND SOLUTIONS 9-5
9.7 MINOR TROUBLE SHOOTING 9-6
9.8 THE ADJUSTMENT OF THE FEEDING TABLE 9-6
10
PART LIST
INTRODUCTION 10-1
10.01 BAND SAW FOUNDATION ASS'Y 10-2~3
10.02 VISE MACHINE BODY ASS'Y 10-4~5
10.03 TRANSMISSION MACHINCAL ASS'Y 10-6~7
10.04 POWER UNIT ASS'Y 10-8~9
10.05 GUIDE APROACH ASS'Y 10-10~11
10.06 GUIDE BRACKET ASS'Y 10-12~13
10.07 DRIVE WHEEL ASS'Y 10-14~15
10.08 REDUCER GEARBOX BODY ASS'Y 10-16~17
10.09 ELECTRICAL & HYDRAULIC CONTROL BOX ASS'Y 10-18~19
10.10 WIRE BRUSH ASS'Y 10-20~21
10.11 HEAD CYCLINDER ASS'Y 10-22~23
10.12 FEED EQUIPMENT ASS'Y 10-24~25
10.13 MAINFOLD TAPPET CYCLINDER 10-26~27
10.14 WORK FEED DEVICE 10-28~29
10.15 FEED VISE ASS'Y 10-30~31
10.16 MULTI VISE ASS'Y 10-32~33
10.17 FEED CYCLINDER ASS'Y 10-34~35
10.18 IDLE WHEEL ASS'Y 10-36~37
10.19 BLADE TENSION FACILITY ASS'Y 10-38~39
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Instruction Manual for AH-250H (B040)
04/12/2014

Section 1
SAFETY RULES
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Instruction Manual for AH-250H (B040)
04/12/2014

SAFETY RULES
Section 1
1-1
SECTION 1
SAFELY RULES
Never wear gloves loose clothing when operating the machine. They may cause danger if they are
caught in a running machine.
Be sure to confirm that the area around the machine is cleared of people and obstacles every time
before starting the machine or operation.
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Instruction Manual for AH-250H (B040)
04/12/2014

SAFETY RULES
Section 1
1-2
Use a water-soluble cutting fluid on this machine. Oil-based cutting fluids may emit smoke or catch
fire, depending on the condition of their use.
Never try to adjust the wire brush on the saw blade or remove chips when the saw blade is running.
It is dangerous if hands or clothing are caught by the running blade.
Never cut carbon or any other material that produces and disperses explosive dust on this machine.
Sparks from motors and other machine parts may ignite and explode the air-borne dust. The machine
needs special measures for cutting explosive materials.
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Instruction Manual for AH-250H (B040)
04/12/2014

SAFETY RULES
Section 1
1-3
Stop the saw blade before you clean the machine. It is dangerous if hands or clothing are caught by
the running blade.
Be sure to prohibit any use of fire in the shop, and install a fire extinguisher or other fire control
device near the machine when cutting titanium, magnesium, or any other material that produces
flammable chips. Never operate the machine unattended when cutting flammable materials.
Use roller tables on forward and backward sides of the machine when cutting the long work. It is
dangerous if the work falls off the machine when the roller tables are not used.
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Instruction Manual for AH-250H (B040)
04/12/2014