1. What is Time Taken for Spark-Out Operation?

Time Taken for Spark-Out Operation, is a step in cylindrical grinding which measures the time when there are no more sparks. It is an important parameter to prevent deformation.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( t_s \) — Time Taken for Spark-Out Operation (s)
• \( m \) — Number of Workpiece Revolution (rev)
• \( n_w \) — Rotational Frequency of Workpiece (rad/s)

Explanation: The equation calculates the time required for spark-out operation by dividing the number of workpiece revolutions by the rotational frequency of the workpiece.

3. Importance of Spark-Out Time Calculation

Details: Accurate spark-out time calculation is crucial for preventing workpiece deformation and ensuring proper finishing in grinding operations. It helps optimize the grinding process and maintain dimensional accuracy.

4. Using the Calculator

Tips: Enter the number of workpiece revolutions and rotational frequency of workpiece. Both values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is spark-out operation in grinding?
A: Spark-out operation is the final stage in grinding where the grinding wheel continues to rotate without further infeed, allowing the wheel to remove any remaining material and achieve the desired surface finish.

Q2: Why is spark-out time important?
A: Proper spark-out time ensures that the workpiece achieves the required dimensional accuracy and surface finish while preventing thermal damage and deformation.

Q3: How does rotational frequency affect spark-out time?
A: Higher rotational frequencies typically result in shorter spark-out times, while lower frequencies require longer spark-out periods to achieve the same finishing results.

Q4: What factors influence the number of workpiece revolutions needed?
A: Material properties, grinding wheel characteristics, required surface finish, and initial workpiece condition all influence the number of revolutions needed for proper spark-out.

Q5: Can this formula be used for all grinding operations?
A: While the basic principle applies to cylindrical grinding, specific applications may require adjustments based on grinding wheel type, coolant conditions, and material properties.