What is the formula to calculate the turning?

Cutting speed V=80 m/min, Feed is f=0.8 mm/rev, Depth of cut = 3 mm per pass. f=0.8 mm/rev The turning will be done in 2 steps. In first step a length of (50 + 50) = 100 mm will be reduced from Ø100 mm to Ø80 mm and in second step a length of 50 mm will be reduced from Ø80 mm to Ø60 mm.

How do you do turning operations on a lathe machine?

Procedure:

1. Select a tool bit to the desired size and shape of the groove required.
2. Lay out the location of the groove.
3. Set the lathe to half the speed for turning.
4. Mount the workpiece in the lathe.
5. Set the tool bit to center height.
6. Slowly feed the tool bit into the workpiece using the cross feed handle.

How do you calculate lathe?

At constant cutting speed, a CNC lathe automatically applies the correct rpm based on the following formulas for inch and metric systems: rpm = 12 × sfm ÷ (π × cutting diameter in inches), rpm = 1,000 × m/min. ÷ (π × cutting diameter in millimeters).

What is the formula for calculating the machining time on lathe?

The machining time depends on the type and extent of machining required, material being machined, speed, feed, depth of cut and number of cuts required. N = Number of stroke/min Page 2 ME6005/Process Planning & Cost Estimation Year/sem:IV/VII f = Feed/stroke in mm V = Cutting speed m/min K = Return time/Cutting time 8.

How do you calculate machining time for turning operations?

You simply divide the length of the motion required for machining in inches by the inches per minute feedrate. The metric equivalent is: Time (minutes) = length of motion in millimeters divided by motion rate in millimeters per minute.

What is Kutter formula?

Q = a * c * [R * S]1/2. c = 41.65 + 0.00281/S + 1.811/n. 1 + [41.65 + 0.00281/S] * n/R1/2.

What is straight turning operation?

1. Straight Turning: The workpiece is held on the chuck and it is made to rotate about the axis, and the tool is fed parallel to the lathe axis. The straight turning produces a cylindrical surface by removing excess metal from the workpiece.

What is form turning operation?

Turning is a form of machining, a material removal process, which is used to create rotational parts by cutting away unwanted material. The cutting tool feeds into the rotating workpiece and cuts away material in the form of small chips to create the desired shape.

How do you calculate lathe speed and feed?

The following equation is used to calculate spindle speed: rpm = sfm ÷ diameter × 3.82, where diameter is the cutting tool diameter or the part diameter on a lathe in inches, and 3.82 is a constant that comes from an algebraic simplifica-tion of the more complex formula: rpm = (sfm × 12) ÷ (diameter × π).

What is machining time in lathe?

the time during which a piece of equipment (machine, lathe, unit, or apparatus), without direct participation of an operator, produces a change in the dimensions, shape, or state of a workpiece.

How do you calculate turn speed?

How do you calculate surface finish?

RMS is calculated as the Root Mean Square of a surfaces measured microscopic peaks and valleys….That means you:

1. Measure height across the microscopic peaks and valleys.
2. Calculate the SQUARE of each measurement value.
3. Calculate the MEAN (or average) of those numbers (squared).
4. Find the square ROOT of that number.