Magnetic Stand Dial Indicator – Uses and Care

In the ITI Turner trade, precision measurement and alignment are essential for producing high-quality components. One of the most important instruments used for checking small variations in dimensions and alignment is the dial indicator with magnetic stand. It is widely used in workshops for inspection and setup operations. This chapter explains its construction, working, uses, and proper care.

Introduction to Dial Indicator

A dial indicator is a precision measuring instrument used to measure small linear displacements. It displays the measurement on a circular dial with a pointer.

When combined with a magnetic stand, it becomes more versatile and easy to position.

Magnetic Stand

A magnetic stand is a base that holds the dial indicator firmly in position using magnetic force. It allows the indicator to be fixed on metal surfaces such as machine beds.

Construction of Magnetic Stand Dial Indicator

• Dial Indicator: Circular dial with pointer
• Plunger: Moves up and down with contact
• Dial Face: Graduated scale for reading
• Magnetic Base: Holds the stand firmly
• Adjustable Arm: Positions the indicator
• Switch: Activates or deactivates magnet

Working Principle

The dial indicator works on the principle of converting linear movement into rotary motion. When the plunger touches the surface, it moves up or down, causing the pointer on the dial to rotate.

The amount of pointer movement indicates the displacement.

Uses of Magnetic Stand Dial Indicator

• Checking alignment of machine components
• Measuring run-out of shafts
• Checking flatness and parallelism
• Setting workpieces on lathe and milling machines
• Inspecting surface variations

Advantages

• High accuracy
• Easy to use
• Flexible positioning
• Firm holding due to magnetic base

Limitations

• Works only on magnetic surfaces
• Sensitive to shock and damage

Care and Maintenance

• Keep the instrument clean and dry
• Avoid dropping or shock
• Store in protective case
• Do not apply excessive force on plunger
• Keep magnetic base clean for proper holding

Precautions While Using

• Ensure proper contact with surface
• Check zero setting before use
• Lock the stand firmly
• Avoid vibration during measurement

Application in Turner Workshop

In the Turner trade, the magnetic stand dial indicator is used to check the alignment of workpieces, measure run-out, and ensure proper setup of machines. It helps in achieving precision and quality in machining operations.

It is an essential tool for inspection and quality control.

Importance in Machining

• Ensures accurate alignment
• Improves machining quality
• Reduces errors

Conclusion

The magnetic stand dial indicator is an important precision measuring instrument in the ITI Turner trade. It is used for checking alignment and measuring small variations accurately.

Proper care and maintenance ensure long life and reliable performance.

In conclusion, understanding the use and care of dial indicators is essential for achieving precision and quality in machining operations.