Cosen G320 Instruction Manual
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Cosen G320 Instruction Manual

Programmable automatic mass production horizontal bandsaw
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COSEN SAWS
G320
SNC 100 Programmable Automatic
Mass Production Horizontal Bandsaw
(Non CE Model)
Instruction Manual
The Pinnacle of Cutting Performance
Cosen Mechatronics Co., Ltd.

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  • Page 1 COSEN SAWS G320 SNC 100 Programmable Automatic Mass Production Horizontal Bandsaw (Non CE Model) Instruction Manual The Pinnacle of Cutting Performance Cosen Mechatronics Co., Ltd.
  • Page 3 FROM THE MANUFACTURER Thank you for your purchase of COSEN’s bandsaw machine and your trust in the COSEN brand. We are excited to have you as our valued customer and look forward as much as you do to the accelerated productivity, long-lasting endurance and superb cost-effectiveness this machine is about to bring to you.
  • Page 5 Safety rules  Make sure your work area is cleared of uninvited people and obstacles every time before you start operating the machine.  Never step or stand on the roller table. Your foot may slip or trip on the rollers and you will fall.
  • Page 6 Safety rules  Never adjust the wire brush or remove chips while the saw blade is still running. It is extremely dangerous if hands or clothing are caught by the running blade.  Stop the saw blade before you clean the machine. It is dangerous if hands or clothing are caught by the running blade.

  • Page 7: Table Of Contents

    Table of Contents Safety Information Section 1 – Safety Instructions ……………………………………………………………………………………………………… 1-1 Safeguard Devices ………………………………………………………………………………………………………. 1-3 Emergency Stop …………………………………………………………………………………………………………. 1-4 Illustration: Emergency Stop ……………………………………………………………………………………… Safety Labels ………………………………………………………………………………………………………………. 1-6 Illustration: Safety Labels ………………………………………………………………………………………..… Hearing Protection ……………………………………………………………………………………………………… 1-10 CE Compliance ……………………………………………………………………………………………………………. 1-10 Risk Assessment ………………………………………………………………………………………………………….
  • Page 8 Table of Contents Blade Descend Pressure & Speed ………..…………………………………………………….…… 4-7 HMI Touch Screen & Functions …………………………………………………………….………… 4-7 HMI Error Codes ………………………..……………………………………………………….…………. 4-20 Standard Accessories ………….………………………..……………………………………………….…………… 4-21 Optional Accessories …….…….………………………..…………………………………………….……………… 4-24 Unrolling & Installing the Blade …………………………………………………………………….……………. 4-26 Adjusting Wire Brush ………..……………………………………………………………………….………………. 4-28 Adjusting Saw Arm……………..……………………………………………………………………….………………...
  • Page 9 Table of Contents Every Six Months ……………….………………………………………………….………………………. 8-3 Storage Conditions …………………………..………..…………………………………………………………….. 8-3 Terminating the Use of Machine ……..…………..…………………………………………………………….. 8-3 Oil Recommendation for Maintenance ………………………………………………………………………. 8-4 Troubleshooting Section 9 – Introduction ……………………….…….…………………..……………………………………………………………. 9-1 Precautions ………………….…………………..……………………………………………………………………..9-2 General Troubles & Solutions ………………………..……………………………………………………………. 9-2 Minor Troubles &...

  • Page 11: Safety Information

    Safety is a combination of a well designed machine, operator’s knowledge about the machine and alertness at all times. COSEN’s band machine has incorporated many safety measures during the design process and used protective devices to prevent personal injuries and potential risks. Warning labels also serve as a reminder to the operator.
  • Page 12 This manual has important safety All users must read it before performing any information. Read through it carefully activity on the machine, such as replacing before operating this machine to prevent the saw band or doing regular maintenance. personal injury or machine damage. Learn Some personal protective equipment is the operation, limitation and the specific potential hazards peculiar to this band...

  • Page 13: Safeguard Devices

    SAFEGUARD DEVICES The safeguard devices incorporated in this machine include the following two main parts: 1. Protection covers & guards 2. Safety related switches Protection Covers & Guards 1. Idle wheel housing cover 2. Drive wheel housing cover 3. Gear reducer cover 4.
  • Page 14 Illustration: Safety Fence Safety Fences...

  • Page 15: Emergency Stop

    Safety Related Switches To protect the operator, the following safety related switches on the machine are actuated when the machine is in operation. Wheel motion detector This is a proximity sensor used to detect the motion of the drive wheel. Once the saw blade is broken or as soon as it starts slipping, the sensor will detect and stop the drive wheel and the machine.

  • Page 16: Illustration: Emergency Stop

    Illustration: Emergency Stop Emergency Stop Button...

  • Page 17: Safety Labels

    SAFETY LABELS Please read through and understand the safety labels before operating the machine. Refer to Illustration: Safety Labels. Label Meaning Label Meaning Hazardous Voltage DANGER: Running Blade Blade runs through this area. TURN POWER OFF before Keep your hands away from a servicing.

  • Page 18: Illustration: Safety Labels

    Illustration: Safety Labels...

  • Page 19: Hearing Protection

    Section 9. CE COMPLIANCE Cosen’s CE model is designed to satisfy regulations of the Council Directive on the approximation of the laws of the Member States relating to machinery (2006/42/EC) Annex I Essential health and safety requirements relating to the design and construction of machinery.

  • Page 21: General Information

    INFORMATION SPECIFICATION MACHINE PARTS IDENTIFICATION FLOOR PLAN This band saw machine is designed by Cosen’s R&D engineers to provide you the following features and advantages: Safety  This machine is designed to fully protect the operator from its moving parts during cutting operation.
  • Page 22 SPECIFICATION G320 Model SNC-100 Programmable Automatic Mass Production Horizontal Bandsaw 325 mm (12.8 in) Round 325 mm (12.8 in) Square Capacity 325 x 380 mm (12.8 x 15.0 in) Rectangular (H x W) W: 190 ~ 300 mm (7.5 ~ 11.8 in) Bundle Cutting H: 70 ~ 140 mm (2.7 ~ 5.5 in)
  • Page 23 MACHINE PARTS IDENTIFICATION Double Column Idle Wheel Cross Link Drive Wheel Blade Tension Controller Blade Tension Meter Chip Conveyor (optional) Control Panel with dual control valve Top Clamp (optional) Front Vise Cylinder Wire Brush Assembly Electrical Compartment Quick Approach Bar Front Vise Bed Blade Guide Arm Machine front view...
  • Page 24 Control Panel Rear Vise Cylinder Rear Vise Assembly Length Setting Stopper Rear Vise Feed Cylinder Discharge Table Blade Motor Chip Conveyor (optional) Machine top view...

  • Page 25: Floor Plan

    FLOOR PLAN Machine top view Machine front view...

  • Page 27: Moving & Installation

    Section 3 MOVING & INSTALLATION LOCATION & ENVIRONMENT UNPACKING & INSPECTING LIFTING REMOVING SHIPPING BRACKET CLEANING INSTALLING RELOCATING LOCATION & ENVIRONMENT For your safety, please read all information regarding installation before proceeding. Install your machine in a place satisfying all of the following conditions: Space: ...

  • Page 28: Unpacking & Inspecting

    UNPACKING & INSPECTING  Unpack your machine carefully to avoid damage to machine parts or surfaces.  Upon arrival of your new band saw, please confirm that your machine is the correct model and it comes in the same specification you ordered by checking the model plate on the machine base. ...

  • Page 29: Lifting

    LIFTING When moving the machine, we strongly suggest you choose any one of the methods described below to move your machine. Use a crane (Only applies to the machine with the design of the hanging point.) Move the machine to its location by using a crane and a wire rope sling that can fully withstand the weight of the machine (refer to machine specification under Section 2 General Information).
  • Page 30  When you work together with more than two people, it is best to keep constant verbal communication with each other. Use a forklift (Only applies to the machine with the design of the lifting point.) Make sure that the lifting rod can fully withstand the weight of the machine. (Refer to Section 2 – General Information for Specifications.) Machine lifting with a forklift should be done strictly according to the lifting points designated by the original manufacturer.

  • Page 31: Illustration: Lifting Points

    3. Use rolling cylinders You can use rolling cylinders to move your machine in a small machine shop environment.  You must use rolling cylinders made in material of proper compressive strength. 4. Other ways to move If the machine does not have stickers, please contact your local agent immediately.

  • Page 32: Removing Shipping Bracket

    Do not remove the rust-preventive grease with a metal scraper and do not wipe the painted surfaces with solvent as doing so would damage surface paint. INSTALLING Cosen’s bandsaw machine is relatively easy to install. Follow these six easy steps to install your machine. Connect Leveling &...

  • Page 33: Supplying Coolant

    Have a qualified electrician make the electrical connections. If the power supply voltage is different from the transformer and motor connection voltage shown on the label attached to the electrical compartment of the machine, contact COSEN or your agent immediately.
  • Page 34 Turn off the shop circuit breaker. Make sure the machine circuit breaker switch on the electrical compartment door is turned to OFF. Remove the screw securing the electrical compartment and then open the door. Pull the power supply cable and grounding conductor through the power supply inlet into the electrical compartment.

  • Page 35: Installing Roller Table (Optional)

    Anchoring Normally there is no need to anchor the machine. If the machine is likely to vibrate, fix the machine to the floor with anchor bolts. Shock absorption steel plates are provided and can be placed under each leveling bolt to prevent their sinking into the concrete floor.
  • Page 36 3-10...

  • Page 37: Operating Instructions

    Section 4 OPERATING INSTRUCTION SAFETY PRECAUTIONS BEFORE OPERATING CONTROL PANEL STANDARD ACCESSORIES OPTIONAL ACCESSORIES UNROLLING & INSTALLING THE BLADE ADJUSTING WIRE BRUSH PLACING WORKPIECE ONTO WORKBED POSITIONING WORKPIECE FOR CUTTING ADJUSTING BLADE SPEED ADJUSTING COOLANT FLOW BREAKING IN THE BLADE TEST RUNNING THE MACHINE CUTTING OPERATION STARTING AN AUTOMATIC OPERATION...

  • Page 38: Safety Precautions

    SAFETY PRECAUTIONS For your safety, please read and understand the instruction manual before you operate the machine. The operator should always follow these safety guidelines: x The machine should only be used for its designated purpose. x Do not wear gloves, neckties, jewelry or loose clothing/hair while operating the machine. x For eye protection, always wear protective safety glasses.

  • Page 39: Before Operating

    BEFORE OPERATING Choosing an appropriate saw blade and using the right cutting method is essential to your cutting efficiency and safety. Select a suitable saw blade and cutting method based on your work material and job requirements e.g. cutting accuracy, cutting speed, economic concern, and safety control. Wet cutting If you choose dry cutting or low speed cutting, the chips may accumulate in machine parts and may cause operation failure or insulation malfunction.

  • Page 40: Control Panel

    CONTROL PANEL The control panel is located on the top of the electrical box. It includes the following function: power system, hydraulic system, cooling system and the human machine–interface (HMI). The operator must fully understand the function of each switch and button before operating the machine. Name Name Emergency stop button...

  • Page 41: Control Buttons

    Control Buttons 1. Emergency stop button Press this button to stop the machine in an emergency. When the button is pressed, it brings the machine to a full stop. The button locks when pressed. In order to unlock it, please turn the button clockwise.
  • Page 42 9. Feed forward y When this button is pressed, the feeding workbed will move forward. Press and hold the button to feed forward. As soon as the button is released, the feeding workbed will stop moving forward. y This button only works when the machine is switched to manual mode “ ”. y This button is only in function when the quick approach bar is touching the upper limit switch AND when either of the front and rear vises are unclamped.

  • Page 43: Blade Descend Pressure & Speed

    Blade Descend Pressure and Speed The part of control panel is where cutting pressure and saw bow descend speed can be adjusted. 1. Cutting pressure control knob This pressure control knob is used to adjust the cutting pressure of the blade. Turning the knob clockwise increases the cutting pressure.
  • Page 44 RS422 MMI port Environment No condensation and rust Startup Screen After the power is turned on, Cosen’s logo will appear as the startup screen, followed by the main operation menu.. Main control menu The main control menu includes some operating button that were used on the control panel of the earlier machines.
  • Page 45 Refer to the table below for descriptions of each function. Item Function Description Hydraulic start When the power is turned on, press this button to start the hydraulic motor. A solid yellow icon indicates the hydraulic system has been turned on. Press this button to turn off the hydraulic motor Hydraulic stop immediately.
  • Page 46 Item Function Description individual cut is finished. Switching to manual mode at any time other than cutting, the machine will proceed with the next cut until it is finished. Material retract 2mm When this function is turned on, the machine will retract the material for 2mm after completing each cut before the blade ON/OFF rises from its lowest position.
  • Page 47 Item Function Description Press this button to set up system parameters. Password is System parameter required. setting All parameters have been set up by the manufacturer. In order to prevent random change from being made to these parameters and affect cutting precision and machine life, this function is protected with a set of password.
  • Page 48 Item Function Description Indicates if the front vises have clamped and secured the Front vise status workpiece. indicator When the front vises have secured the workpiece, the clamping vise icon on the right will turn solid white. Feeding movement When the feeding vise reaches the front limit, the vise set indicator icon will turn solid white.
  • Page 49 Cutting status display & setup When cutting is in operation, press to enter cutting status display and setup page. Page 1 – cutting status display This page shows the following information (from top to bottom): Feeding length (current feeding vise position) Blade height This function is available only if the optional...
  • Page 50 Page 2 – cutting status setup This page comes in two versions depending on if the optional blade deviation detector is installed on the machine. The shared features are as follows: Width Set material width so the system can automatically calculate the cut rate. Start JOB –...
  • Page 51 Page 3 – cutting program setup In this page you can set your desired cutting length and quantity and see the number of finished cuts (Cut Finished). A total of 100 cutting jobs can be set and performed under the automatic mode. In “start job”...
  • Page 52 Cutting program setup When cutting is in operation, press to quickly access the cutting program setup page (the same as page 3 of the cutting status display and setup page) This setup page is the same as page 3 of the cutting status display and setup page.
  • Page 53 PLC Monitor Shows all signals of the PLC system. Error report Page 1 – error report Lists a historical report of the errors and the time of occurrence. Press Home to return to the main control menu. Press Next to go to the troubleshooting support page.
  • Page 54 Error Error Description Solution Code M300 Front vises not clamping Check if the queen valve works M301 Rear vises not clamping Check if the queen valve works M303 Lower limit switch error Check if the lower limit switch works M304 Hydraulic motor not starting Check if the hydraulic motor works M306...

  • Page 55: Standard Accessories

    STANDARD ACCESSORIES Blade tension device y This blade tension device equipped with hydraulic cylinder provides appropriate tension to the saw blade. y To tighten the saw blade, turn the selector to y Upon saw blade breakage, the safety device will activate and automatically stop all machine operation.
  • Page 56 Quick approach device This device allows the blade to quickly descend to just right above the material to save you operation time. Split front vises The spilt vises are a clever design to make sure your workpiece is tightly clamped by the two vises from both sides of the blade, maximizing stability and cutting precision.

  • Page 57: Optional Accessories

    Vibration damper The vibration damper can be assembled to the left saw arm. This optional accessory is extremely useful in reducing the high frequency noise produced when cutting large sized material. OPTIONAL ACCESSORIES Vise pressure regulator This adjustment valve is used to control vise pressure. Adjust vise pressure based on the material of your workpiece.
  • Page 58 2M roller table The optional 2M roller table supports the work material and ensures the material be fed in smoothly. Refer to Section 9 for further information on adjusting the roller table. Blade Deviation Detector This device detects blade deviation. If the blade deviates beyond the preset range, the machine will stop automatically.

  • Page 59: Unrolling & Installing The Blade

    UNROLLING & INSTALLING THE BLADE Always wear leather gloves and protection glasses when handling a blade. Unrolling the blade Please follow the procedures illustrated below. Unroll and roll the blade 4 23...
  • Page 60 Installing a new blade Step 1 Select the most suitable saw blade for your workpiece considering the size, shape and material. Step 2 Turn on the machine power by switching to ON. Step 3 Switch to manual ( ) mode. Step 4 Press the saw bow up button and elevate the saw bow until it reaches to its highest point.
  • Page 61 Step 10 Remove the old blade. If necessary, clean the carbide inserts before installing a new saw blade. Step 11 Place the new blade around the idle wheel and the drive wheel. Step 12 Insert the blade into the left and right tungsten carbide inserts. The back and the sides of the blade need to be touching the inserts as well as the adjacent rollers.

  • Page 62: Adjusting Wire Brush

    ADJUSTING WIRE BRUSH Follow these steps to adjust wire brush to appropriate position: Step 1 Loosen the lock lever and the wire brush cover. Step 2 Adjust the screw to make brush move up / down until it makes proper contact with the saw blade (see below illustration).
  • Page 63 ADJUSTING COOLANT FLOW Step 1 – Press the saw blade start button to start the saw blade drive motor. Step 2 – Press the saw bow down button to lower the saw bow. Step 3 – Use the flow control valve (shown below) to adjust the amount of fluid flowing to the cutting area.
  • Page 64 POSITIONING WORKPIECE FOR CUTTING Follow these steps to position your workpiece: Step Action Press the rear vise clamp button until the workpiece is securely rear vises clamp material clamped. Move the vertical alignment rollers toward workpiece until it align vertical rollers stands against the workpiece.

  • Page 65: Adjusting Blade Speed

    ADJUSTING BLADE SPEED Step 1 – Set the flow control to “0” position. Step 2 – Press the saw blade start button to start the blade. Step 3 – Turn the blade speed control knob to adjust the blade speed. The blade speed should be adjusted based on the size and the material of the workpiece.

  • Page 66: Cutting Operation

    CUTTING OPERATION Step 1 – Check before you cut Power: Check the voltage and frequency of your power source. Coolant: Check if you have sufficient coolant in the tank. Hydraulic: Check if you have sufficient (at least two thirds or higher) hydraulic oil. Workbed: Check if there is any object on the feeding bed that may cause interference.

  • Page 67: Using Top Clamp For Bundle Cutting

    STARTING AN AUTOMATIC OPERATION Step 1 – Use manual mode and cut the edge of the workpiece by using the same procedures as those described under manual operation. Step 2 – After the trim cut is completed and the saw blade has stopped at the lower limit position, press the saw blade up button to raise the saw bow until the quick approach bar is approximately 10mm (0.4inch) above the workpiece.

  • Page 68: Terminating A Cutting Operation

    Note the allowable clamping width and height. (Refer to Section 2 – General Information, Specifications) Proper and improper stacking of workpieces Proper Improper Step 4 – Align the top clamp cylinders with the center of the workpiece and tighten the lock nuts. Step 5 –...

  • Page 69: Electrical System

    Section 5 ELECTRICAL SYSTEM ELECTRICAL CIRCUIT DIAGRAMS...

  • Page 75: Hydraulic System

    Section 6 HYDRAULIC SYSTEM HYDRAULIC CIRCUIT DIAGRAM...
  • Page 78 ITEM. PART NO. PART NAME Specification PHD-02D-1000*T 1/4 xDouble xL1000 PHD-02D-1100*T 1/4 xDouble xL1100 PHD-02D-1200*T 1/4 xDouble xL1200 PHD-02D-1300*T 1/4 xDouble xL1300 PHD-02D-1600*T 1/4 xDouble xL1600 PHD-02D-200*T 1/4 xDouble xL200 PHD-02D-2100*T 1/4 xDouble xL2100 PHD-02D-220*T 1/4 xDouble xL220 PHD-02D-2300*T 1/4 xDouble xL2300 PHD-02D-2900*T 1/4 xDouble xL2900 PHD-02D-300*T...

  • Page 81: Bandsaw Cutting: A Practical Guide

    Section 7 BANDSAW CUTTING: A PRACTICAL GUIDE INTRODUCTION SAW BLADE SELECTION VISE LOADING BladeBreak -In SOLUTIONS TO SAWING PROBLEMS...
  • Page 82 INTRODUCTION TPI: The number of teeth per inch as measured from gullet to gullet. 2. Tooth Rake Angle: The angle of the tooth face measured with respect to a line perpendicular to the cutting direction of the saw. 3.Tooth Pitch: Tooth pitch refers to the number of teeth per inch (tpi). 1 inch equates to 25.4 mm. A distinction is made between constant tooth pitches with a uniform tooth distance, 2 tpi for example, and variable tooth pitches with different tooth distances within one toothing interval.

  • Page 83: Vise Loading

    4. Tooth pitch The main factor here is the contact length of the blade in the workpiece. If it is 4P, 25.4 ÷ 4 P = 6.35 mm, that is, one tooth is 6.35 mm. If it is 3P, 25.4 ÷ 3 P = 8.46 mm If the number is small, it means that the tooth is large. What is written as 3/4 is that it is a variable pitch of large (3) / small (4).

  • Page 84: Bladebreak -In

    The following diagrams suggest some costeffective ways of loading and fixturing. Be sure, regardless of the arrangement selected, that the work can be firmly secured to avoid damage to the machine or injury to the operator. BladeBreak -In Completing a proper break-in on a new band saw blade will dramatically increase its life. 1.

  • Page 85: Maintenance & Service

    Section 8 MAINTENANCE & SERVICE INTRODUCTION BASIC MAINTENANCE MAINTENANCE SCHEDULE BEFORE BEGINNING A DAY’S WORK AFTER ENDING A DAY’S WORK EVERY MONTH EVERY THREE MONTHS EVERY SIX MONTHS STORAGE CONDITIONS TERMINATING THE USE OF MACHINE OIL RECOMMENDATION FOR MAINTENANCE INTRODUCTION For the best performance and longer life of the band saw machine, a maintenance schedule is necessary.
  • Page 86 MAINTENANCE SCHEDULE We suggest you do the maintenance on schedule. Before beginning a day’s work 1. Please check the hydraulic oil level. If oil level volume is below 1/2, please add oil as necessary.(Filling up to 2/3 level is better for system operation.) 2.
  • Page 87 Every six months 1.Clean the filter of the cutting fluid. 2.Replace the transmission oil for every half of a year(or 1200 hours). Check the sight gauge to ascertain the transmission level. Recommended TRANSMISSION OIL  Omala oil HD220  Mobil comp 632 600W Cylinder oil 3.Replace the hydraulic oil.
  • Page 88 OIL RECOMMENDATION FOR MAINTENANCE Item Method Revolution Suggest oil Dovetail guide Keep grease covered. Antirust. Daily Shell R2 Roller bearing Sweep clean and oil with lubricant. Daily SEA #10 Bed roller / surface Sweep clean and oil with lubricant. Daily SEA #10 Nipples of bearing Use grease gun, but not excess.

  • Page 89: Precautions

    Section 9 TROUBLESHOOTING INTRODUCTION PRECAUTIONS GENERAL TROUBLES & SOLUTIONS MINOR TROUBLES & SOLUTIONS MOTOR TROUBLES & SOLUTIONS BLADE TROUBLES & SOLUTIONS SAWING PROBLEMS & SOLUTIONS RE-ADJUSTING THE ROLLER TABLE INTRODUCTION All the machines manufactured by us pass a 48 hours continuously running test before shipping out and we are responsible for the after sales service problems during the warranty period if the machines are used normally.
  • Page 90 PRECAUTIONS When an abnormality occurs in the machine during operation, you can do it yourself safely. If you have to stop machine motion immediately for parts exchanging, you should do so according to the following procedures:  Press HYDRAULIC MOTOR OFF button or EMERGENCY STOP button. ...

  • Page 91: Motor Troubles & Solutions

    MINOR TROUBLES & SOLUTIONS TROUBLE PROBABLE CAUSE SUGGESTED REMEDY Saw blade motor does not run Overload relay activated Reset even though blade drive button Saw blade is not at forward Press SAW FRAME is pressed. limit position. FORWARD button MOTOR TROUBLES & SOLUTIONS TROUBLE PROBABLE CAUSE SUGGESTED REMEDY...

  • Page 92: Blade Troubles & Solutions

    BLADE TROUBLES AND SOLUTIONS DISCONNECT POWER CORD TO MOTOR BEFORE ATTEMPTING ANY REPAIR OR INSPECTION. TROUBLE PROBABLE CAUSE SUGGESTED REMEDY Too few teeth per inch Use finer tooth blade Loading of gullets Use coarse tooth blade or cutting lubricant. Teeth strippage Excessive feed Decrease feed...

  • Page 93: Sawing Problems & Solutions

    SAWING PROBLEMS AND SOLUTIONS Other than this manual, the manufacturer also provides some related technical documents listed as follows: Sawing Problems and Solutions Vibration during cutting Failure to cut Short life of saw blade Curved cutting Broken blade   ...
  • Page 94 SOLUTIONS TO SAWING PROBLEMS Table Of Contents #1. Heavy Even Wear On Tips and Corners Of Teeth #11. Uneven Wear Or Scoring On The Sides Of Band #2. Wear On Both Sides Of Teeth #12. Heavy Wear And/Or Swagging On Back Edge #3.
  • Page 95 #2. Wear On Both Sides Of Teeth Probable Cause : A. Broken, worn or missing back-up guides allowing teeth to contact side guides. B. Improper side guides for band width. C. Backing the band out of an incomplete cut. #3. Wear On One Side Of Teeth Probable Cause : A.
  • Page 96 #5. Body Breakage Or Cracks From Back Edge Probable Cause : A. Excessive back-up guide "preload" will cause back edge to work harden which results in cracking. B. Excessive feed rate. C. Improper band tracking – back edge rubbing heavy on wheel flange.
  • Page 97 #8. Gullets Loading Up With Material Probable Cause : A. Too fine of a tooth pitch – insufficient gullet capacity. B. Excessive feeding rate producing too large of a chip. C. Worn, missing or improperly positioned chip brush. D. Insufficient sawing fluid due to inadequate supply, improper ratio and/or improper application.
  • Page 98 #12. Heavy Wear And/Or Swagging On Back Edge Probable Cause : A. Excessive feed rate. B. Excessive back-up guide "preload". C. Improper band tracking – back edge rubbing heavy on wheel flange. D. Worn or defective back-up guides. #13. Butt Weld Breakage Probable Cause : A.
  • Page 99 #16. Body Breakage Or Cracks From Gullets Probable Cause : A. Excessive back-up guide "preload". B. Improper band tension. C. Guide arms spread to maximum capacity. D. Improper beam bar alignment. E. Side guide adjustment is too tight. F. Excessively worn teeth. #17.

  • Page 100: Re-Adjusting The Roller Table

    #20. Broken Band Shows A Twist In Band Length Probable Cause : A. Excessive band tension B. Any of the band conditions which cause the band to be long (#18) or short (#19) on tooth edge. C. Cutting a tight radius. RE-ADJUSTING THE ROLLER TABLE If the feeding table suffers the huge stroke and the alignment is effected, follow the below procedure to adjust.

  • Page 101: Parts

    Section 10 PARTS SPARE PARTS RECOMMENDATIONS PART LIST SPARE PARTS RECOMMENDATIONS The following table lists the common spare parts we suggest you purchase in advance: Part Name Part Name Saw blade Coolant tank filter Wire brush Steel plates Carbide inserts Rollers Bearings Belt...
  • Page 103 G320 EU168/AM55 20170421 高度譯碼器組 Height encoder assembly エンコーダアセンブリ...
  • Page 104 G320-EU168/AM55 20170421 エンコーダアセンブリ 高度譯碼器 Height encoder assembly PART ITEM PART NO. PART NAME PART NAME IN CHINESE PART NAME IN JAPAN SPEC. ミドルリミットスイッチ  Middle limit switch C320G-1116 中限滑桿 スライドバー sliding bar インチラック C360L-2109A Tooth bar 定寸齒條 エンコーダ可動部品 C320G-2103 encoder movable seat 譯碼器活動座...
  • Page 106 G320-AM55 20170321 護欄組 Safety Fence Assembly ITEM PART NO. PART NAME PART NAME IN CHINESE PART SPEC. C320G-1023C Left splash shield 左防濺板 C320G-1025C Right splash shield 右防濺板 C320G-1031A Left asfety fence 左扁鐵護欄 C320G-1033A Right safety fence 右扁鐵護欄...
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  • Page 153: Warranty

    Section 11 Warranty Warranty New machines are warranted to be free from defects in workmanship and material for a period of one (1) year from the date of shipment by Seller. The warranty period is based on normal usage of two thousand eighty hours (2080) per year and is reduced proportionately for any excess usage.
  • Page 156 COSEN SAWS Vertical Plate Saws Horizontal Billet Saws NC/CNC Band Saws Structural Miter Cutting Saws Automatic Band Saws Visit our website at www.cosen.com COSEN MECHATRONICS CO., LTD.

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