Cosen C-325NC User manual

Bandsaw Specialist
Bandsaw SpecialistBandsaw Specialist
Bandsaw Specialist
Instruction Manual
Model: C-325NC
Programmable Automatic Mass Production
Horizontal Bandsaw
Manual
COSEN MACHINERY INDUSTRIAL CO., LTD

Printed in Taiwan
NOTICE:Please read this instruction manual carefully to familiarize
yourself with the installation, operation and maintenance. Please keep in
mind the following: Correctly operate the machine as described in the
manual to prevent accidents. We suggest you always keep manual handy
and refer to it whenever you are unsure of how to perform any procedure
for C-325NC.
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:
C-325NC Cosen Programmable Automatic Mass Production Horizontal Bandsaw
Ver. 1 Date: 03/12/2012
©2012 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.

1
TABLE OF CONTENTS
SECTION PAGE
1
SAFETY RULES 1-1~8
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 2-3~4
2.2.3 Emergency Stop Button 2-4
2.2.4 Noise Level 2-4~5
2.2.5 Safety Devices and Guards 2-5~6
2.2.6 Specification of Electrical Equipment 2-6
2.3 GUIDE TO THE MANUAL 2-7
2.4 DOCUMENTATION 2-7
2.5 INTRODUCTION 2-7
2.5.1 General Safety Instruction 2-7~9
2.6 RISK ASSESSMENT 2-9
3 MOVING AND INSTALLATION
3.1 INTRODUCTION 3-1
3.2 MOVING THE MACHINE 3-1~3
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 3-7
3.3.6 Installation Procedure 3-7
Fixing the Machine to the Floor3-7
Machine Leveling3-8
Installation of Feed Roller3-8
Cutting Fluid Supply3-8
Hydraulic Fluid Supply3-9
Electrical Connections (Power Requirement)3-9
Installation Fire Control Devices3-9
3.4 WORKING CONDITIONS 3-10
3.5 RESHIPMENT PROCEDURE 3-10
4
OPERATION INSTRUCTION
4.1 SAFETY PRECAUTIONS 4-1
4.2 BEFORE OPERATING 4-1~2
4.3 CONTROL PANEL 4-3
4.3.1 Control panel 4-3

2
TABLE OF CONTENTS
4.3.2 Control buttons 4-4~5
4.3.3 Blade descend pressure and speed control panel 4-6
4.3.4 Human-machine-interface (HMI) touch screen 4-6~17
4.4 STANDARD ACCESSORIES 4-18~19
4.5 OPTIONALACCESSORIES 4-19~20
4.6 MANUAL MODE 4-21
4.6.1 UNROLLING & INSTALLING THE BLADE 4-21~24
4.6.2 Adjust the wire brush 4-24
4.6.3 Adjust the saw arm 4-25
4.6.4 Placing workpiece onto workbed 4-25
4.6.5 Positioning workpiece for cutting 4-26
4.6.6 Adjusting blade speed 4-27
4.6.7 Adjusting coolant flow 4-27
4.6.8 Breaking-in the blade 4-27~28
4.7 STARTING AN AUTOMATIC OPERATION 4-28~29
4.8 TEST RUN THE MACHINE 4-30
4.9 CUTTING OPERATION 4-30~31
4.10 TERMINATING A CUTTING OPERATION 4-31
5
ELECTRICAL SYSTEM
5.1 INTRODUCTION 5-1
5.2 ELECTRICAL CIRCUIT DIAGRAMS 5-1~5
6
HYDRAULIC SYSTEM
6.1 INTRODUCTION 6-1~2
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 7-4~5
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8-1
After ending work each day8-1
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 8-4

3
TABLE OF CONTENTS
9
SYSTEM TROUBLE SHOOTING
9.1 INTRODUCTION 9-1
9.2 PRECAUTION 9-1
9.3 GENERAL TROUBLES AND SOLUTIONS 9-2
9.4 MINOR TROUBLE SHOOTING 9-3
9.5 BLADE TROUBLES AND SOLUTIONS 9-4
9.6 SAWING PROBLEMS AND SOLUTIONS 9-5
9.7 MINOR TROUBLE SHOOTING 9-6
9.8 THE ADJUSTMENT OF THE FEEDING TABLE 9-6~7
10
PART LIST 10-1~12

GENERAL INFORMATION
Section 2
2-1
SECTION 2
GENERAL INFORMATION
I : FOR MACHINE COMMON
2.1 INTRODUCTION
This automatic band saw is a model more popular than any other model as witnessed in many
countries worldwide. This machine was developed by a group of R&D engineers over a considerable
period of time assuring you of the highest efficiency and performance. This machine can automatically
detect the conditions of material supply, cutting and quality control. Each component was developed
by computer design and analysis. This machine is specifically designed to cut metal material. Your
machine has the following advantages:
•Machinery and each component part can be handled safely.
•Machinery and each component part can be easily moved or operated by the user.
•Machinery and each component part has passed strict testing. (Council Directive on the
approximation of the laws of the Member States relating to Machinery)
This manual contains shipping, handling, unpacking, initial checkout, operation, maintenance
information, etc. It is divided into 10 sections. Each section covers a specific aspect of the machine.
This section contains a general description of the machine and other available documentation. We are
going to introduce this smart machine now.
2.2 EQUIPMENT DESCRIPTION
This automatic band saw machine is designed based on the guidelines of low cost and high
performance. It is designed to cut various kinds of materials with the appropriate saw blade installed.
The specific features of this band saw machine are as follows:
1. Concern for safety. This machine is designed to fully protect the operator from its moving
elements while cutting.
2. When the saw blade is broken, the machine will stop automatically.
3. The machine will stop automatically when out of stock.
4. Dual valve system is designed to achieve optimal cutting performance with the simple
setting of feed rate and perspective cutting pressure for different material.
5. The intended life-span of the machine is counted based on regular daily operation. It is
calculated with the life expectancy of 10 years under normal operating condition and
exact attention to the maintenance schedule.
8 hours × 5 days ×52 weeks ×10 years ＝20,800 hours

GENERAL INFORMATION
Section 2
2-2
2.2.1 Specifications Specification of The Machine
MODEL C-325NC
Round 325 mm
Square 325 mm
MAXIMUM CUTTING
CAPACITY Rectangle (H×
××
×W)
325×380 mm
SPEED 20 ~ 100 m/ mim (66 ~ 328 fpm)
SIZE (L×
××
×W×
××
×T)
3820 × 34 × 1.1 mm (150.4" x 1.33" x 0.04")
TENSION Hydraulic controlled
GUIDE Tungsten Carbide Blade Guide
SAW BLADE
CLEANING Wire Brush
SAW BLADE 5HP (2,2 kW)
HYDRAULIC 1HP (0.75kW)
MOTOR OUTPUT
COOLANT 1/8 HP (0.1 kW)
HYDRAULIC OIL 35 L
TANK CAPACITY COOLANT 75 L
Mode HYDRAULIC, Automatic, NC controller
FEEDING Length Single Stroke: 403 mm (15.9”)
Multiple: 9999mm
VISE CONTROL Hydraulic
NET WEIGHT 1800 kg
GROSS WEIGHT 2000 kg
* Design and specifications are subjected to change without notice.

GENERAL INFORMATION
Section 2
2-3
2.2.2 Indentification of Main Parts & Terminology
FIG 2-1 THE SIDE VIEW OF THE MACHINE
FIG 2-2 TOP VIEW DRAWING
TOP VIEW DRAWINGTOP VIEW DRAWING
TOP VIEW DRAWING

GENERAL INFORMATION
Section 2
2-4
FIG 2-3 FRONT SIDE VIEW
FRONT SIDE VIEWFRONT SIDE VIEW
FRONT SIDE VIEW
2.2.3 Emergency Stop Button
Your machine‘s emergency stop button is designed to be very easy to access. When you
press it, it will stop the machine completely to avoid severe injury when an accident occurs.
You should press it immediately without hesitation in the following cases:
•Any emergency situation that would cause severe injury.
•Any abnormal situation or error, such as fire etc.
The button is going to be locked when you press it. To unlock it, you must pull it. Its
appearance has red color and rubber material for safe operation. We hope you do not press this
button inadvertently or otherwise.
2.2.4 Noise Level
Noise has a major effect on the quality of the environment at the work site. We refer you to
testing data and information as follows:
Excessive exposure to high levels of noise may cause impairment to hearing, but the
vulnerability to hearing loss varies between individuals and must be taken into account
in specifying an allowable limit for noise exposure.
A level of 90 dBA is widely accepted as a criterion for 8 hour/day exposure to steady-
state broad-band noise.
The unprotected ear should not be exposed to noise levels higher than 120 dBA. A
machine‘s noise come from the following: