Lathe Operations Calculator

➤ Calculate Cutting Speed from Dia of job to be turned and Revolution of job
➤ Calculate Revolution(rev.) from Cutting Speed and Dia of job to be turned
➤ Calculate Time for Turning
➤ Calculate Time for Boring
➤ Calculate Time for Drilling
➤ Calculate Time for Facing
➤ Calculate Time for Knurling
➤ Calculate Time for Reaming
➤ Calculate Time for Tapping

Calculate Cutting Speed from Dia of job to be turned and Revolution of job

`S=[πDN]/100` m/min.

Enter your values:

Dia of job to be turned(D):
in cm.
Revolution of the job/min(N):

Result:

Cutting Speed(S):

Calculate Revolution(rev.) from Cutting Speed and Dia of job to be turned

`N=[100S]/[πD] r.p.m. `

Enter your values:

Cutting Speed(S):
m/min.
Dia of job to be turned(D):
cm.

Result:

Revolution of the job job/min(N):

Calculate Time for Turning

Time for Turning = (Length of the job to be turned) / (Feed/Rev).× r.p.m. min.

Enter your values:

Length of job:
metre
Feed/rev.:
Revolution of the job/min:

Result:

Time for Turning:

Calculate Time for Boring

Time for Borning = (Length to be bored) / (Feed/Rev).× r.p.m.

Enter your values:

Length to be Bored:
Feed/Rev.:
Revolution of the job/min:

Result:

Required Time for Boring:

Calculate Time for Drilling

Time for Drilling = (Depth of hole to be produced) / (Feed/Rev).× r.p.m.

Enter your values:

Depth of hole:
Feed/Rev.:
Revolution of the job/min:

Result:

Required Time for Drilling:

Calculate Time for Facing

Time required for Cut = (Length to Cut) / (Feed/Rev).× r.p.m.

Enter your values:

Length of Cut:
Feed:
Revolution of the job/min:

where, Length of Cut = 1/2 (Dia. of job)

Result:

Required Time for Cut:

Calculate Time for Knurling

Time for Knurling = (Length of Cut) / (Feed/Rev).× r.p.m.

Enter your values:

Length of Cut:
Feed/Rev.:
Revolution of the job/min:

Result:

Required Time for Knurling:

Calculate Time for Reaming

Time for Reaming = (Depth of Hole) / (Feed/Rev).× r.p.m.

Enter your values:

Depth of Hole:
Feed/Rev.:
Revolution of the job/min:

Result:

Required Time for Reaming:

Calculate Time for Tapping

Time for Tapping = `[L+D/2]/[P itch × r.p.m.] min. `
Time for Cutting = `[3/2(L+D/2)]/[P itch × r.p.m.] min. `

Enter your values:

Length of threaded portion:
Dia of tap used:
Pitch:
Revolution of the job/min:

Result:

Required Time for Threading:
Required Time for Cutting:
About lathe

Turning is the process used to remove the metal. In this process job is rotated against a tool.

Boring is the process to enlarge the hole which has drilled in an object. This formula counts required time for boring.

Drilling is the process to drill a hole in an object. This formula counts required time for drilling.

Facing is the process to remove the material from the surface at right angles to the axis of rotation of the job.

Knurling is the precess to produce diamond shaped impression on the surface of a component to make its surface rough for easy grip. Knurling is precessed on a which is performed on a lathe machine. For this knurling tool is used which is also known as 'Knurl'.

To make the drilled holes in perfect size on an object, the reaming preocess is performed. It removes a small amount of material from the object. The tool which is used in reaming preocess is called 'Reamer'.

In the process of tapping internal threads are made with a tool which is called tap. The formula of required time for tapping gives the required time for pusshing the tap inside and the formula of required time for cutting gives the required time for returning the tap.

The process of threading is used to produce helix by removing material from circular surfaces. In above equation L is length of thread in cm. If the number of start equals to 1,
Pitch = (1 / Thread per cm). If number of start is greater than 1,
Pitch = (number of start / Thread per cm).
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