Material Removal Rate during Drilling Operation when Enlarging Existing Hole Calculator

✖Machined Surface Diameter is the diameter of the inner surface of the cylindrical Job or Workpiece through which drilling operation was done. Which is essentially the diameter of the drilled hole.ⓘ Machined Surface Diameter [d_m]			+10% -10%
✖Work Surface Diameter refers to the initial diameter of the workpiece before machining is done. This would be the diameter of the raw material stock that gets fed into the machine for processing.ⓘ Work Surface Diameter [d_w]			+10% -10%
✖Feed Speed refers to the rate at which the drill bit advances into the workpiece during the drilling process. It is a critical parameter that significantly impacts hole quality, drill bit life.ⓘ Feed Speed [v_f]			+10% -10%

✖Material Removal Rate (MRR) is the volume of material removed per time unit (usually per minute) when performing machining operations such as drilling.ⓘ Material Removal Rate during Drilling Operation when Enlarging Existing Hole [Z_w]

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Material Removal Rate during Drilling Operation when Enlarging Existing Hole

Formula

`"Z"_{"w"} = (pi*("d"_{"m"}^2-"d"_{"w"}^2)*"v"_{"f"})/4`

Example

`"0.000471m³/s"=(pi*(("55mm")^2-("25mm")^2)*"0.25m/s")/4`

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Material Removal Rate during Drilling Operation when Enlarging Existing Hole Solution

STEP 0: Pre-Calculation Summary

Formula Used

Material Removal Rate = (pi*(Machined Surface Diameter^2-Work Surface Diameter^2)*Feed Speed)/4
Z_w = (pi*(d_m^2-d_w^2)*v_f)/4
This formula uses 1 Constants, 4 Variables

Constants Used

pi - Archimedes' constant Value Taken As 3.14159265358979323846264338327950288

Variables Used

Material Removal Rate - (Measured in Cubic Meter per Second) - Material Removal Rate (MRR) is the volume of material removed per time unit (usually per minute) when performing machining operations such as drilling.
Machined Surface Diameter - (Measured in Meter) - Machined Surface Diameter is the diameter of the inner surface of the cylindrical Job or Workpiece through which drilling operation was done. Which is essentially the diameter of the drilled hole.
Work Surface Diameter - (Measured in Meter) - Work Surface Diameter refers to the initial diameter of the workpiece before machining is done. This would be the diameter of the raw material stock that gets fed into the machine for processing.
Feed Speed - (Measured in Meter per Second) - Feed Speed refers to the rate at which the drill bit advances into the workpiece during the drilling process. It is a critical parameter that significantly impacts hole quality, drill bit life.

STEP 1: Convert Input(s) to Base Unit

Machined Surface Diameter: 55 Millimeter --> 0.055 Meter (Check conversion here)
Work Surface Diameter: 25 Millimeter --> 0.025 Meter (Check conversion here)
Feed Speed: 0.25 Meter per Second --> 0.25 Meter per Second No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Z_w = (pi*(d_m^2-d_w^2)*v_f)/4 --> (pi*(0.055^2-0.025^2)*0.25)/4

Evaluating ... ...

Z_w = 0.000471238898038469

STEP 3: Convert Result to Output's Unit

0.000471238898038469 Cubic Meter per Second --> No Conversion Required

FINAL ANSWER

0.000471238898038469 ≈ 0.000471 Cubic Meter per Second <-- Material Removal Rate

(Calculation completed in 00.004 seconds)

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Home » Engineering » Production Engineering » Metal Machining » Machine Tools and Operations » Drilling Operation » Material Removal Rate during Drilling Operation when Enlarging Existing Hole

Credits

Created by Kumar Siddhant

Indian Institute of Information Technology, Design and Manufacturing (IIITDM), Jabalpur

Kumar Siddhant has created this Calculator and 400+ more calculators!

Verified by Kethavath Srinath

Osmania University (OU), Hyderabad

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< 7 Drilling Operation Calculators

Material Removal Rate during Drilling Operation using Feed

Go Material Removal Rate in Drilling = (pi*Machined Surface Diameter^2*Feed Rate in Drilling Operation*Rotational Frequency of Tool)/4

Material Removal Rate during Drilling Operation when Enlarging Existing Hole

Go Material Removal Rate = (pi*(Machined Surface Diameter^2-Work Surface Diameter^2)*Feed Speed)/4

Diameter of Drill Bit given Length of Approach

Go Diameter of Drill Bit = 2*Approach Distance/tan(pi/2-Drill Point Angle/2)

Material Removal Rate during Drilling Operation

Go Material Removal Rate in Drilling = pi/4*Machined Surface Diameter^2*Feed Speed

Machining Time for Drilling Operation

Go Machining Time = Length of Cut/(Feed Rate*Rotational Frequency of Drill-bit)

Drill Point Angle for given Length of Approach

Go Drill Point Angle = 2*atan(0.5*Diameter of Drill Bit/Approach Distance)

Length of Approach for Drilling Operation

Go Approach Distance = 0.5*Diameter of Drill Bit*cot(Drill Point Angle/2)

Material Removal Rate during Drilling Operation when Enlarging Existing Hole Formula

Material Removal Rate = (pi*(Machined Surface Diameter^2-Work Surface Diameter^2)*Feed Speed)/4
Z_w = (pi*(d_m^2-d_w^2)*v_f)/4

Different types of drilling machine tools used in industries.

There are various drilling machines used in industries, each suited for different drilling needs and applications. Here are some of the most common types: 1. Pillar Drill Machine, 2. Radial Drill Machine, 3. Sensitive Drill Machine, 4. Magnetic Drill Machine, 5. CNC Drilling Machine, 6. Gang Drill Machine etc.

How to Calculate Material Removal Rate during Drilling Operation when Enlarging Existing Hole?

Material Removal Rate during Drilling Operation when Enlarging Existing Hole calculator uses Material Removal Rate = (pi*(Machined Surface Diameter^2-Work Surface Diameter^2)*Feed Speed)/4 to calculate the Material Removal Rate, Material Removal Rate during Drilling Operation when Enlarging Existing Hole determines the volume removed by drill bit from workpiece in a time frame, when drilling an existing hole. This is often requied to reduce heat generation and reduce friction between workpiece and drill-bit. This method also provides a smoother surface finish. Material Removal Rate is denoted by Z_w symbol.

How to calculate Material Removal Rate during Drilling Operation when Enlarging Existing Hole using this online calculator? To use this online calculator for Material Removal Rate during Drilling Operation when Enlarging Existing Hole, enter Machined Surface Diameter (d_m), Work Surface Diameter (d_w) & Feed Speed (v_f) and hit the calculate button. Here is how the Material Removal Rate during Drilling Operation when Enlarging Existing Hole calculation can be explained with given input values -> 0.000471 = (pi*(0.055^2-0.025^2)*0.25)/4.

FAQ

What is Material Removal Rate during Drilling Operation when Enlarging Existing Hole?

Material Removal Rate during Drilling Operation when Enlarging Existing Hole determines the volume removed by drill bit from workpiece in a time frame, when drilling an existing hole. This is often requied to reduce heat generation and reduce friction between workpiece and drill-bit. This method also provides a smoother surface finish and is represented as Z_w = (pi*(d_m^2-d_w^2)*v_f)/4 or Material Removal Rate = (pi*(Machined Surface Diameter^2-Work Surface Diameter^2)*Feed Speed)/4. Machined Surface Diameter is the diameter of the inner surface of the cylindrical Job or Workpiece through which drilling operation was done. Which is essentially the diameter of the drilled hole, Work Surface Diameter refers to the initial diameter of the workpiece before machining is done. This would be the diameter of the raw material stock that gets fed into the machine for processing & Feed Speed refers to the rate at which the drill bit advances into the workpiece during the drilling process. It is a critical parameter that significantly impacts hole quality, drill bit life.

How to calculate Material Removal Rate during Drilling Operation when Enlarging Existing Hole?

Material Removal Rate during Drilling Operation when Enlarging Existing Hole determines the volume removed by drill bit from workpiece in a time frame, when drilling an existing hole. This is often requied to reduce heat generation and reduce friction between workpiece and drill-bit. This method also provides a smoother surface finish is calculated using Material Removal Rate = (pi*(Machined Surface Diameter^2-Work Surface Diameter^2)*Feed Speed)/4. To calculate Material Removal Rate during Drilling Operation when Enlarging Existing Hole, you need Machined Surface Diameter (d_m), Work Surface Diameter (d_w) & Feed Speed (v_f). With our tool, you need to enter the respective value for Machined Surface Diameter, Work Surface Diameter & Feed Speed and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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