| 1. | The chip breaker on a lathe tool is essential when ? | |
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turning soft material
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turning ductile materials and to break the chips
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turning cast iron
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turning hardened material
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Report Question| 2. | When rough turning a work peace with a carbide tool long curly chips are formed. Which one of the following is the right way of getting rid of this kind of chip ? | |
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stop the power feed at intervals so that the chip break
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change the rake angle
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provide chip breaker on the tool
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use a metal hook and pull away the chips
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| 3. | Assume that front clearance angle of a lathe tool 8 degree and top rake is 15 degree. Then the wedge angle is ? | |
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15°
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23°
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67°
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90°
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| 4. | When a tool set the Above the centre, the ? | |
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top rake angle increases
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top rake angle decreases
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top rake angle not change
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top rake angle becomes negative
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| 5. | Which range of cutting speed is set for turning a mild steel using a HSS tool ? | |
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15-20 m/min
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35-50 m/min
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50-80 m/min
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70-100 m/min
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| 6. | The tool made of HSS wears out faster at _______________ ? | |
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normal speed
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slow speed
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medium speed
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high speed
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| 7. | When the tool of centre lathe moves the parallel to the axis of rotation ? | |
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it produces a taper surface
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it produces a cylindrical surface
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it produces a flat surface
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none of the above
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| 8. | The carbide made workpiece need to be machined, what rake angle you will be use in lathe tool ? | |
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positive
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negative
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zero
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none of the above
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| 9. | When the tool of centre lathe moves the perpendicular of the axis of rotation ? | |
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it produces a taper surface
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it produces a cylindrical surface
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it produces a flat surface
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none of the above
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| 10. | The angle made by the face of the tool and the plane parallel to the base of cutting tool is called ? | |
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rake angle
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clearance angle
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lip angle
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cutting angle
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