Bench Grinding
A bench grinder (also known as tool post grinding) is a benchtop type of grinding machine used to drive abrasive wheels. It is commonly used in workshops and industrial settings for sharpening tools, removing rust, shaping metal, and polishing surfaces.
Main Components
- Grinding Wheels – Usually two (coarse and fine), mounted on either side of the motor.
- Tool Rest – Adjustable platform that supports the workpiece during grinding.
- Eye Shield – Transparent shield to protect the eyes from sparks and debris.
- Wheel Guard – Covers to contain fragments in case of wheel breakage.
- Motor – Typically 0.5 to 1 HP, drives the wheels.
- Switch – For turning the machine ON and OFF.
Applications
- Sharpening cutting tools like chisels, drill bits, and lathe tools.
- Deburring and cleaning of metal parts.
- Shaping and profiling metal components.
- Polishing using buffing wheels (optional setup).
Steps to Use a Bench Grinder:
Step 1 : Check Machine Condition: Inspect wheels for cracks, damage, and secure mounting.
Step 2 : Wear Personal Protective Equipment (PPE): Safety glasses, gloves, and face shield are mandatory.
Step 3 : Adjust Tool Rest: Set the tool rest about 1–2 mm from the wheel surface.
Step 4 : Start the Grinder: Switch on and let it reach full speed before use.
Step 5 : Hold Workpiece Firmly: Maintain a firm grip and position it on the tool rest.
Step 6 : Use Light Pressure: Apply gentle, controlled pressure to avoid overheating.
Step 7 : Avoid Side Grinding: Use only the face of the wheel.
Step 8 : Cool Workpiece if Needed: Dip in water to avoid overheating.
Step 9 : Switch Off After Use: Turn off the machine and wait for the wheel to stop.