MiBoce Professional Drill Bit Sharpening Machine MR-13B User Manual

1. Important Safety Instructions

Read and understand all instructions before operating this machine. Failure to follow all instructions listed below may result in electric shock, fire, and/or serious injury.

• Work Area Safety: Keep the work area clean and well-lit. Cluttered or dark areas invite accidents. Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust. Power tools create sparks which may ignite the dust or fumes.
• Electrical Safety: Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock. Do not abuse the cord. Never use the cord for carrying, pulling, or unplugging the power tool. Keep cord away from heat, oil, sharp edges, or moving parts. Damaged or entangled cords increase the risk of electric shock.
• Personal Safety: Always wear eye protection. Use safety glasses or goggles. Wear hearing protection when operating for extended periods. Dress properly. Do not wear loose clothing or jewelry. Keep your hair, clothing, and gloves away from moving parts. Loose clothes, jewelry, or long hair can be caught in moving parts.
• Machine Use and Care: Do not force the power tool. Use the correct power tool for your application. The correct power tool will do the job better and safer at the rate for which it was designed. Disconnect the plug from the power source before making any adjustments, changing accessories, or storing power tools. Such preventive safety measures reduce the risk of starting the power tool accidentally.
• Maintenance: Maintain power tools and accessories. Check for misalignment or binding of moving parts, breakage of parts, and any other condition that may affect the power tool’s operation. If damaged, have the power tool repaired before use. Many accidents are caused by poorly maintained power tools.

2. Product Overview

The MiBoce MR-13B Professional Drill Bit Sharpening Machine is designed for precise sharpening of drill bits ranging from 3mm to 13mm in diameter. It features an adjustable point angle from 95° to 135°, a powerful pure copper motor, and a durable diamond grinding wheel for efficient and accurate sharpening.

Key Features:

• Portable Design: Compact and lightweight for easy transport and use in various locations.
• Adjustable Point Angle: Allows for grinding of drill bits with point angles from 95° to 135° to suit different applications.
• Variable Locating Pin Relief Angle: Enables grinding of four relief angles for optimal drill performance.
• High-Performance Motor: Equipped with a 4400 RPM pure copper DC motor for stable and powerful operation.
• Diamond Grinding Wheel: Standard wear-resistant diamond grinding wheel ensures precision, high hardness, and long service life.
• Comprehensive Collet Set: Includes 11 collets to accommodate drill bit diameters from φ3mm to φ13mm.

Component Identification:

This diagram illustrates the main components of the MiBoce MR-13B Drill Bit Sharpening Machine. Key parts include the Motor Switch, Positioning Adjustment Nut, Tool Holder, Collets, Angle Adjustment Screw, Grinding Seat, 2-Blade Chuck Set, SDC/CBN Grinding Wheel, Positioning Pin, Adjustment Seat, and the Center Dead Center Adjustment for grinding wheel replacement.

3. What's Included

Carefully unpack the contents and ensure all items are present and undamaged. If any items are missing or damaged, contact customer support.

The package includes the following:

• 1 x MiBoce MR-13B Drill Bit Sharpening Machine
• 11 x Standard Collets (φ3, φ4, φ5, φ6, φ7, φ8, φ9, φ10, φ11, φ12, φ13)
• 1 x SDC/CBN Grinding Wheel (pre-installed or separate)
• 1 x Power Cord
• 1 x Operating Instruction Manual
• Related accessories (e.g., wrenches for maintenance)

4. Setup

4.1 Placement

Place the drill bit sharpening machine on a stable, level, and clean workbench. Ensure adequate lighting and ventilation in the work area. Keep the machine away from moisture and heat sources.

4.2 Power Connection

Connect the power cord to the machine's power input and then plug it into a standard electrical outlet. Ensure the power switch is in the 'OFF' position before connecting to power.

The machine is designed for portability, featuring a sturdy handle and an easily accessible power switch for safe operation.

5. Operation

5.1 Selecting the Correct Collet

Choose the collet that matches the diameter of the drill bit you intend to sharpen. The machine comes with 11 collets for φ3mm to φ13mm drill bits. Insert the selected collet into the chuck set.

5.2 Inserting the Drill Bit

Insert the drill bit into the collet. Ensure the drill bit is securely seated and extends sufficiently for sharpening. Use the positioning adjustment nut to properly secure the drill bit.

5.3 Adjusting the Point Angle

The machine allows for point angle adjustment from 95° to 135°. Rotate the angle adjustment screw to set the desired point angle for your drill bit. Refer to the markings on the machine for precise adjustment.

This image illustrates the adjustable point angle feature and the visual effect on the drill bit's point and lip relief angles.

5.4 Grinding Process

Once the drill bit is secured and the angle is set, turn on the machine using the motor switch. Carefully insert the chuck set with the drill bit into the grinding hole. Rotate the chuck set left and right 180°, once for each side, to grind the drill bit evenly. The integrated grinding unit simplifies this process.

The image demonstrates the application of the machine, showing a drill bit being sharpened. Ensure to choose the correct collet and rotate the bit for even grinding.

5.5 Grinding Lip Relief Angle

Utilize the leaning function of the locating pin stopper to grind the lip relief angle. This feature allows for grinding four different relief angles, from small to large, to optimize the drill bit's cutting performance.

6. Maintenance

6.1 Replacing the Grinding Wheel

The diamond grinding wheel is wear-resistant but will eventually require replacement. To replace the grinding wheel, first disconnect the machine from the power source. Locate the screw for the center dead center adjustment and remove it to access the grinding wheel. Carefully remove the old wheel and install the new one, ensuring it is properly seated before reassembling.

This image highlights the replaceable grinding wheel, which is crucial for maintaining sharpening performance.

6.2 Cleaning

Regularly clean the machine to remove metal dust and debris. Use a soft brush or compressed air to clean the grinding area and internal components. Ensure the machine is unplugged before cleaning. Do not use water or harsh chemicals.

7. Troubleshooting

This section addresses common issues you might encounter with your drill bit sharpening machine.

• Machine does not turn on:
  • Check if the power cord is securely plugged into both the machine and the electrical outlet.
  • Ensure the power switch is in the 'ON' position.
  • Verify that the electrical outlet is functional by testing it with another device.
• Drill bit not sharpening evenly:
  • Ensure the drill bit is properly seated and secured in the correct size collet.
  • Verify that the chuck set is rotated 180° evenly for both sides during grinding.
  • Check the grinding wheel for wear or damage; replace if necessary.
• Excessive vibration or noise:
  • Ensure the machine is placed on a stable and level surface.
  • Check if the grinding wheel is securely installed and not loose.
  • Inspect for any foreign objects or debris inside the grinding area.
• Poor sharpening quality:
  • Confirm the correct point angle is set for the type of drill bit and material.
  • Ensure the drill bit is clean and free of oil or debris before sharpening.
  • The grinding wheel may be worn and require replacement.

8. Specifications

9. Warranty and Support

For warranty information, technical support, or service inquiries, please refer to the documentation provided with your purchase or contact your retailer. Keep your purchase receipt as proof of purchase for any warranty claims.