- #1

LockyPhysics

- 7

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Hi,

I'm looking for some help on an assignment I have been given!

I know how to do everything except to calculate the time it takes for the turning, milling and drilling processes.

I would appreciate if you could give me the formulas along with the answer!

The component is attached as I could not post it here.

Thanks a Million,

Here is the assignment:

You have been given the task of estimating the total cost of manufacturing 1000 components in your Engineering Company. The components (shown) are manufactured from high-grade steel using a lathe and a milling machine only.

Using the following information estimate the total cost if production time is charged out at €25.00 per hour and material cost at €2.00 per piece.

The first operation is turning. A tungsten carbide tool is used at a cutting speed of 60m/min and a feed rate of 0.06mm/rev. The second operation is milling. A face mill, 50mm diameter with 8 tungsten carbide inserts is used at a cutting speed of 60m/min and a feed rate of 0.1mm/tooth. The third operation is drilling. The drill is high-speed steel and is used on the milling machine at a cutting speed of 20m/min and a feed rate of 0.1 mm/rev. The depth of the hole is 27.1mm.

Prorated downtime for all work set up procedures and transfer from lathe to milling machine is 1.25 minutes per component. Prorated downtime for tool changing on the milling machine is 4.4 minutes per component

I'm looking for some help on an assignment I have been given!

I know how to do everything except to calculate the time it takes for the turning, milling and drilling processes.

I would appreciate if you could give me the formulas along with the answer!

The component is attached as I could not post it here.

Thanks a Million,

Here is the assignment:

You have been given the task of estimating the total cost of manufacturing 1000 components in your Engineering Company. The components (shown) are manufactured from high-grade steel using a lathe and a milling machine only.

Using the following information estimate the total cost if production time is charged out at €25.00 per hour and material cost at €2.00 per piece.

The first operation is turning. A tungsten carbide tool is used at a cutting speed of 60m/min and a feed rate of 0.06mm/rev. The second operation is milling. A face mill, 50mm diameter with 8 tungsten carbide inserts is used at a cutting speed of 60m/min and a feed rate of 0.1mm/tooth. The third operation is drilling. The drill is high-speed steel and is used on the milling machine at a cutting speed of 20m/min and a feed rate of 0.1 mm/rev. The depth of the hole is 27.1mm.

Prorated downtime for all work set up procedures and transfer from lathe to milling machine is 1.25 minutes per component. Prorated downtime for tool changing on the milling machine is 4.4 minutes per component