Vigel Manufacturing Technologies
10+ Indian Synthetic Rubber Interview Questions and Answers
Q1. How many Datums present in the current drawing kept infront of you?
There are 3 Datums present in the current drawing.
Datum A: Position of a hole
Datum B: Orientation of a surface
Datum C: Reference point for measurements
Q2. Which alignment you are using to align the job on CMM?
I am using the Datum Reference Frame alignment method to align the job on CMM.
Datum Reference Frame alignment method is commonly used in CMM to establish a coordinate system based on specific datums on the part.
This method involves selecting primary, secondary, and tertiary datums to align the part in the correct orientation.
The alignment process ensures accurate measurement and inspection of the part's features.
Examples of datums include flat surfaces, holes, or edges that a...read more
Q3. Explain how will you proove the cmm reading is correct/true or not?
To verify the accuracy of CMM readings, I would use calibration standards, conduct repeatability tests, and compare results with known measurements.
Use calibration standards to verify the accuracy of CMM readings.
Conduct repeatability tests to ensure consistent results.
Compare CMM measurements with known measurements to validate accuracy.
Q4. Is this possible to check the flatness of this big round conference table?
Yes, it is possible to check the flatness of a big round conference table.
Use a straight edge or level to check for any deviations from flatness
Measure the distance between the table surface and the straight edge at multiple points
Look for any gaps or unevenness in the measurements
Consider using a laser level for more accurate results
Q5. If yes, How will you check flatness of this big rectangular conference table, without cmm?
Use straight edge and feeler gauge to check flatness of the table.
Use a straight edge to check for any gaps between the table surface and the straight edge.
Use a feeler gauge to measure any deviations from flatness at various points on the table.
Repeat the process in multiple directions to ensure overall flatness of the table.
Document the measurements and compare them against the acceptable flatness tolerance for the table.
Q6. Without CMM, How you will check parallelity & perpendicularity of conference table?
Using precision measuring tools like calipers, levels, and squares to check parallelity & perpendicularity of conference table.
Use a precision level to check if the table surface is parallel to the ground
Measure the distance between opposite corners to ensure the table is square
Use a square tool to check the right angles of the table
Calipers can be used to measure the thickness of the table legs for uniformity
Q7. Do you know the surface finish? If yes then please explain?
Surface finish refers to the texture or smoothness of a surface after it has been machined or treated.
Surface finish is measured in units such as Ra (roughness average) or Rz (average maximum profile height).
A smooth surface finish is important for reducing friction, improving aesthetics, and ensuring proper functionality.
Common methods for achieving desired surface finishes include grinding, polishing, and coating.
Surface finish can impact the performance and longevity of a ...read more
Q8. Does it have further types or subtypes for surface finish? If yes, then please explain?
Yes, surface finish can have further types or subtypes such as roughness, waviness, and lay.
Surface roughness refers to the finely spaced irregularities on the surface of an object.
Surface waviness refers to the more widely spaced deviations of the surface from a straight line.
Surface lay refers to the direction of the predominant surface pattern.
Q9. Which cmm machine and related softwares you have used?
I have experience using a Zeiss CMM machine with Calypso software.
Used Zeiss CMM machine for precision measurements
Proficient in operating Calypso software for data analysis
Performed dimensional inspections using CMM technology
Q10. How is your engineering drawing reading and understanding level?
I have a strong engineering drawing reading and understanding level.
I have extensive experience in interpreting complex engineering drawings and schematics.
I am proficient in understanding geometric dimensioning and tolerancing (GD&T) symbols.
I have successfully collaborated with design teams to ensure accurate interpretation of drawings.
I have a keen eye for detail and can identify potential issues or discrepancies in drawings.
I am familiar with industry standards and best p...read more
Q11. Explain the alignment that you will use to align the job as per current presented drawing infront of you.
I will use a precision alignment tool such as a laser level or optical alignment system to align the job as per the presented drawing.
Use a laser level to ensure the job is aligned horizontally and vertically according to the drawing
Utilize an optical alignment system to align specific features or components as per the drawing
Check for any discrepancies between the job and the drawing and make necessary adjustments
Q12. Any subtypes having for the types that you have answered about GD&T parameters ?
Yes, there are subtypes for the types of GD&T parameters.
Profile of a surface for flatness, straightness, circularity, etc.
Position for concentricity, symmetry, etc.
Runout for circular runout, total runout, etc.
Q13. Do you know about GD&t parameters?
Yes, GD&T parameters refer to the geometric dimensioning and tolerancing standards used to define the allowable variations in a part's geometry.
GD&T parameters include symbols such as flatness, parallelism, perpendicularity, concentricity, and position.
These parameters help ensure that parts are manufactured and inspected accurately to meet design requirements.
For example, a flatness tolerance specifies the allowable deviation from a perfectly flat surface.
Understanding GD&T ...read more
Q14. What are the type of GD&t parameters?
GD&T parameters include form, profile, orientation, location, and runout.
Form controls the shape of the part
Profile controls the outline of the part
Orientation controls the angle of features
Location controls the position of features
Runout controls the circularity of features
Q15. Do you know Japanese terms of 5S?
Yes, the 5S terms in Japanese are Seiri, Seiton, Seiso, Seiketsu, and Shitsuke.
Seiri - Sort (整理)
Seiton - Set in Order (整頓)
Seiso - Shine (清掃)
Seiketsu - Standardize (清潔)
Shitsuke - Sustain (躾)
Q16. Do you know MSA Criteria? Explain?
MSA Criteria refers to Measurement System Analysis criteria used to evaluate the performance of a measurement system.
MSA Criteria includes Accuracy, Precision, Repeatability, Reproducibility, Linearity, and Stability.
Accuracy refers to how close the measured values are to the true values.
Precision refers to the consistency of repeated measurements.
Repeatability is the variation in measurements taken by a single operator using the same equipment.
Reproducibility is the variatio...read more
Q17. Do you know PPAP? Explain?
PPAP stands for Production Part Approval Process, a standardized process in the automotive industry to ensure suppliers meet quality standards.
PPAP is a set of guidelines developed by the Automotive Industry Action Group (AIAG) to establish a common understanding between suppliers and manufacturers.
It involves documenting and demonstrating that all customer engineering design record and specification requirements are properly understood and fulfilled by the supplier.
PPAP incl...read more
Q18. Write down GD&T parameters symbolically.
GD&T parameters are represented symbolically using various geometric symbols and modifiers.
GD&T parameters include symbols like perpendicularity, parallelism, concentricity, etc.
Modifiers like MMC (Maximum Material Condition) and LMC (Least Material Condition) are also used.
Examples: 1. Perpendicularity: ⊥ 2. Parallelism: ∥ 3. Concentricity: ⌒
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