In the lathe machine, the diameter of workpart 35mm is turned at 100 rpm, depth of cut 0.125 mm, length of continuous chip for one revolution of workpart = 60mm, length undeformed chip= 100.53mm, rake angle = 35°, coefficient of friction= 1.5 and resultant cutting force=215.5 N. Calculate: 1- Horizontal cutting force of the tool on the workpart and vertical cutting force required to hold the tool against the work. 2- The forces components applied against the chip by the tool. 3- Velocity of chip relative to the tool and workpart.

In the lathe machine, the diameter of workpart 35mm is turned at 100 rpm, depth of cut 0.125 mm, length of continuous chip for one revolution of workpart = 60mm, length undeformed chip= 100.53mm, rake angle = 35°, coefficient of friction= 1.5 and resultant cutting force=215.5 N. Calculate: 1- Horizontal cutting force of the tool on the workpart and vertical cutting force required to hold the tool against the work. 2- The forces components applied against the chip by the tool. 3- Velocity of chip relative to the tool and workpart.

Elements Of Electromagnetics

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ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Concept explainers

Forming and Shaping

Metal forming is a category of metalworking process through which the material can be given the desired shape and size by subjecting it to plastic deformation, where the component undergoes bulk deformation process upon application of loads. Unlike the shearing and machining process, the material does not undergo up to a failure point as indicated in the stress-strain curve. Hence, the stresses induced during the forming process are greater than yield strength but less than the failure strength of the material. The process does not lead to the loss of material, so it can be said to be an economical process. During forming, the material is subjected to tensile forces, compressive forces, bending, and shearing loading conditions. The material should possess the property of ductility to undergo the forming process.

Question

In the lathe machine, the diameter of workpart 35mm is turned at 100 rpm,
depth of cut 0.125 mm, length of continuous chip for one revolution of
workpart = 60mm, length undeformed chip= 100.53mm, rake angle = 35°,
coefficient of friction= 1.5 and resultant cutting force=215.5 N.
Calculate:
1- Horizontal cutting force of the tool on the workpart and vertical cutting force
required to hold the tool against the work.
2- The forces components applied against the chip by the tool.
3- Velocity of chip relative to the tool and workpart.
4- The percentage of total energy dissipated due to friction along the shear plane,
and the friction at the tool-chip interface.

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