OWNER'S MANUAL DRILL SHARPENING MACHINE H8203

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MODEL H8203

PROFESSIONAL DRILL

SHARPENING MACHINE

OWNER'S MANUAL

WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE

OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.

#BL10076

PRINTED IN TAIWAN

Summary of content (32 pages)

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MODEL H8203 PROFESSIONAL DRILL SHARPENING MACHINE OWNER'S MANUAL COPYRIGHT © NOVEMBER, 2007 BY GRIZZLY INDUSTRIAL, INC. WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
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Table of Contents INTRODUCTION ............................................................................................................................... 2 Foreword .................................................................................................................................... 2 Contact Info ................................................................................................................................ 2 Machine Data Sheet.............................................
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INTRODUCTION Foreword Contact Info We are proud to offer the Model H8203 Professional Drill Sharpening Machine. This machine is part of a growing Grizzly family of fine metalworking machinery. When used according to the guidelines set forth in this manual, you can expect years of trouble-free, enjoyable operation and proof of Grizzly’s commitment to customer satisfaction.
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Identification B A C D K J I E H F G Figure 1. Model H8203 identification. A. B. C. D. E. F. G. H. I. J. K.
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Drill Bit Anatomy Shank Length Flute Length Flute Shank Overall Length Figure 2. Side view of drill bit parts. Heel Land Cutting Lip Back Relief Cutting Lip Chisel Edge Chisel Edge Both Edges Are Aligned Web Figure 3. Top view of standard drill bit parts. -6- Web Figure 4. Top view of split point drill bit parts.
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Additional Safety for Drill Sharpening Machines 1. BURN HAZARD. To prevent getting burned, do not touch the end of freshly ground bits, which may be hot. 3. ACCESSORIES. Avoid using accessories or attachments not specifically designed for this machine. 2. GRINDING WHEEL CONTACT. Avoid inserting fingers into grinding areas when machine is turned ON. 4. EXPERIENCING DIFFICULTIES.
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SECTION 2: CIRCUIT REQUIREMENTS 110V Operation Power Connection Device The Model H8203 comes with a 5-15 plug, similar to Figure 5, to connect the machine to power. Serious personal injury could occur if you connect the machine to power before completing the setup process. DO NOT connect the machine to the power until instructed later in this manual. Electrocution or fire could result if machine is not grounded and installed in compliance with electrical codes.
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SECTION 3: SETUP Setup Safety This machine presents serious injury hazards to untrained users. Read through this entire manual to become familiar with the controls and operations before starting the machine! Unpacking Your machine was carefully packaged for safe transportation. Remove the packaging materials from around your machine and inspect it. If you discover the machine is damaged, please immediately call Customer Service at (570) 546-9663 for advice.
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Test Run Site Considerations Placement Location Consider existing and anticipated needs, size of material to be processed through each machine, and space for auxiliary stands, work tables or other machinery when establishing a location for your new machine. See Figure 7 for the minimum working clearances. Test run your machine to make sure it runs properly.
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SECTION 4: OPERATIONS Operation Safety Damage to your eyes and lungs could result from using this machine without proper protective gear. Always wear safety glasses and a respirator when operating this machine. Overview The Model H8203 features a tapered CBN (cubic boron nitride grinding wheel that sharpens twist drill bits using a three-step process. The included CBN grinding wheel sharpens HSS, TiN-coated, and cobalt bits. An optional SDC 170 grinding wheel (Page 19) sharpens carbide bits.
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Angle Scale: Indicates the point angle to be sharpened; the angle can be adjusted from 90º— 140º depending upon the workpiece material to be drilled. Lock Ring Collet Grinding Area: Location where the CBN wheel grinds the drill bit point angle to the selected angle. ON/OFF Switch: Turns the machine ON or OFF. Calibrating Drill Bit Figure 9. Inserting collet into lock ring. 3. The following steps must be done to prepare the drill bit to be sharpened.
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—If you are using a standard drill bit, find the closest metric size. For example, turn the dial to "8" for a 3/8" drill bit. —If you are sharpening aircraft extension or deep hole drill bits, select a number on the dial that is double the drill bit diameter. For example, set the calibration dial to "10" for a 5mm aircraft extension drill bit. 5.
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�� Setting Point Angle Front Grinding Area The Model H8203 allows you to select a specific point angle based on the type of material to be drilled. For general purpose use, such as wood and soft metal, set the point angle to 118º (see Figure 16). Set the point angle at 135º or 140º for drilling harder workpieces such as stainless steel, or 90º-100º for drilling soft cast iron workpieces.
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NOTICE You can ruin a drill bit by grinding it too long or too forcefully. Frequently dip the bit in water to cool it and retain its original hardness. If the tip becomes blue or purple, it may have overheated and be too soft to use. 3. While pressing the collet holder forward gently, rotate the drill bit back and forth, and about every four seconds, dip the bit in water to cool the tip. This will help prevent the tip from overheating and softening too much. 4.
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2. Tighten the cap screws, making sure the center of the rear trimming hole is over the edge of the grinding wheel, as shown in Figure 24. —If the back relief is not sufficient (Figure 25), continue lowering the adjusting block until the back relief looks like the example in Figure 21. Back Relief Center Wheel Edge Figure 24. Rear trimming hole center over grinding wheel edge (cover removed for clarity). 3.
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SECTION 5: MAINTENANCE Cleaning Always disconnect power to the machine before performing maintenance. Failure to do this may result in serious personal injury. Schedule Cleaning the Model H8203 is relatively easy. Use a vacuum or brush to remove excess metal chips from around the grinding and trimming areas and inside the grinding wheel cover. Use the included cleaning brush (Figure 27) to clean the front grinding and rear trimming shafts. Use a cloth to remove remaining dust.
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To replace the grinding wheel: 1. DISCONNECT THE SHARPENER FROM POWER! 2. Use the included hex wrench to loosen the cap screw securing the grinding wheel cover at the back of the grinder, then tilt the cover away from the grinder (Figure 28). 2. Remove the mounting screw, flat washer and gasket, fan and grinding wheel, as shown in Figure 28. Washer and Gasket Cap Screw Grinding Wheel Fan Figure 29. Removing grinding wheel. Figure 28. Removing grinding wheel cover cap screw. -20- 3.
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SECTION 6: SERVICE Review the troubleshooting and procedures in this section to fix or adjust your machine if a problem develops. If you need replacement parts or you are unsure of your repair skills, then feel free to call our Technical Support at (570) 546-9663. Troubleshooting Motor & Electrical Symptom Possible Cause Possible Solution Machine does not 1. Plug/receptacle is at fault or wired incor- 1. Test for good contacts; correct the wiring. start or a breaker rectly. trips. 2.
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Sharpening Operations Continued Symptom Possible Cause Possible Solution 1. Regrind bit in front and rear areas, but do not lower Drill bit point over- 1. Adjusting block set too low. split and chisel 2. Adjusting block not secured; blocks sags, adjusting block so much. edges have been 2. Secure adjusting block before grinding. allowing wheel to grind bit too much. removed. Amount of back 1. Adjusting block not low enough. relief ground into bit is too small. 1. Lower adjusting block more (Page 18).
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Wiring Diagram Figure 30. H8203 wiring components.
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Parts Breakdown �� 110 � �� 106 105 101 103 ��
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Parts List REF PART # DESCRIPTION REF PART # DESCRIPTION 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 24 25 26 27 28 29 30 31 32 33 34 BASE PLATE ANGLE BRACKET SWIVEL SLEEVE SPECIAL CAP SCREW CALIBRATING DEVICE BASE CALIBRATING PLATE SPECIAL SET SCREW COLLET HOLDER LOCK RING COMPRESSION SPRING FLANGE CLEANING BRUSH MOTOR BRACKET ADJUSTING BLOCK FAN GRINDING WHEEL CBN 170 MOTOR 110V, 1/6 HP BALLAST FOOT CALIBRATING DEVICE COVER GRINDING WHEEL COVER MOTOR COVER HANDLE CALIBRATING DIAL CAP SCR
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WARRANTY AND RETURNS Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original purchaser from the date of purchase. This warranty does not apply to defects due directly or indirectly to misuse, abuse, negligence, accidents, repairs or alterations or lack of maintenance.
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