Diameter of Drill Bit given Length of Approach Calculator

✖Approach Distance is the extra distance the drill travels before it starts cutting into the workpiece. It allows the tool to reach its cutting speed and position itself properly for an accurate hole.ⓘ Approach Distance [A]			+10% -10%
✖Drill Point Angle is the angle between the two cutting edges (lips) of a drill bit at its tip. This angle affects how aggressively the bit cuts and what materials it's suited for.ⓘ Drill Point Angle [θ]			+10% -10%

✖Diameter of drill bit is essentially the straight distance across the widest part of the cutting edge (lips) of the drill bit. It determines the width of the hole it will create on workpiece.ⓘ Diameter of Drill Bit given Length of Approach [D]

⎘ Copy

👎

Formula

✖

Diameter of Drill Bit given Length of Approach

Formula

`"D" = 2*"A"/tan(pi/2-"θ"/2)`

Example

`"60.35534mm"=2*"12.5mm"/tan(pi/2-"135°"/2)`

Calculator

LaTeX

Reset

👍

Download Production Engineering Formula PDF PDF Image

Diameter of Drill Bit given Length of Approach Solution

STEP 0: Pre-Calculation Summary

Formula Used

Diameter of Drill Bit = 2*Approach Distance/tan(pi/2-Drill Point Angle/2)
D = 2*A/tan(pi/2-θ/2)
This formula uses 1 Constants, 1 Functions, 3 Variables

Constants Used

pi - Archimedes' constant Value Taken As 3.14159265358979323846264338327950288

Functions Used

tan - The tangent of an angle is a trigonometric ratio of the length of the side opposite an angle to the length of the side adjacent to an angle in a right triangle., tan(Angle)

Variables Used

Diameter of Drill Bit - (Measured in Meter) - Diameter of drill bit is essentially the straight distance across the widest part of the cutting edge (lips) of the drill bit. It determines the width of the hole it will create on workpiece.
Approach Distance - (Measured in Meter) - Approach Distance is the extra distance the drill travels before it starts cutting into the workpiece. It allows the tool to reach its cutting speed and position itself properly for an accurate hole.
Drill Point Angle - (Measured in Radian) - Drill Point Angle is the angle between the two cutting edges (lips) of a drill bit at its tip. This angle affects how aggressively the bit cuts and what materials it's suited for.

STEP 1: Convert Input(s) to Base Unit

Approach Distance: 12.5 Millimeter --> 0.0125 Meter (Check conversion here)
Drill Point Angle: 135 Degree --> 2.3561944901919 Radian (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

D = 2*A/tan(pi/2-θ/2) --> 2*0.0125/tan(pi/2-2.3561944901919/2)

Evaluating ... ...

D = 0.0603553390592894

STEP 3: Convert Result to Output's Unit

0.0603553390592894 Meter -->60.3553390592894 Millimeter (Check conversion here)

FINAL ANSWER

60.3553390592894 ≈ 60.35534 Millimeter <-- Diameter of Drill Bit

(Calculation completed in 00.004 seconds)

You are here -

Home » Engineering » Production Engineering » Metal Machining » Machine Tools and Operations » Drilling Operation » Diameter of Drill Bit given Length of Approach

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 Anshika Arya

National Institute Of Technology (NIT), Hamirpur

Anshika Arya has verified this Calculator and 2500+ more calculators!

< 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)

Diameter of Drill Bit given Length of Approach Formula

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

Why Drill is a Multi-Point Cutting Tool?

If a cutter contains more than one cutting edge that can simultaneously partake in material removal action during machining, then it is called a multipoint cutter. Sometimes drill is classified as a double-point cutting tool because common metal cutting drills contain only two cutting edges; however, drills may contain more than two (3 to 6) cutting edges also (for example, wood cutting twist drills).

What is Shank of a drill-bit?

The shank of a drill bit is the end of the bit that is gripped by the chuck of a drill. It's the part you insert into the drill and tighten to hold the bit securely in place. You can think of the shank as the handle of a tool. It's how you hold and control the drill bit while the cutting edges (lips) at the other end do the actual work of creating the hole.

How to Calculate Diameter of Drill Bit given Length of Approach?

Diameter of Drill Bit given Length of Approach calculator uses Diameter of Drill Bit = 2*Approach Distance/tan(pi/2-Drill Point Angle/2) to calculate the Diameter of Drill Bit, The diameter of Drill Bit given Length of Approach is a method to determine the straight distance across the widest part of the cutting edge (lips) of the drill bit, when length of approach is known. It's typically measured in millimeters (mm) or inches (in) and is usually printed on the shank of the drill bit. Diameter of Drill Bit is denoted by D symbol.

How to calculate Diameter of Drill Bit given Length of Approach using this online calculator? To use this online calculator for Diameter of Drill Bit given Length of Approach, enter Approach Distance (A) & Drill Point Angle (θ) and hit the calculate button. Here is how the Diameter of Drill Bit given Length of Approach calculation can be explained with given input values -> 60355.34 = 2*0.0125/tan(pi/2-2.3561944901919/2).

FAQ

What is Diameter of Drill Bit given Length of Approach?

The diameter of Drill Bit given Length of Approach is a method to determine the straight distance across the widest part of the cutting edge (lips) of the drill bit, when length of approach is known. It's typically measured in millimeters (mm) or inches (in) and is usually printed on the shank of the drill bit and is represented as D = 2*A/tan(pi/2-θ/2) or Diameter of Drill Bit = 2*Approach Distance/tan(pi/2-Drill Point Angle/2). Approach Distance is the extra distance the drill travels before it starts cutting into the workpiece. It allows the tool to reach its cutting speed and position itself properly for an accurate hole & Drill Point Angle is the angle between the two cutting edges (lips) of a drill bit at its tip. This angle affects how aggressively the bit cuts and what materials it's suited for.

How to calculate Diameter of Drill Bit given Length of Approach?

The diameter of Drill Bit given Length of Approach is a method to determine the straight distance across the widest part of the cutting edge (lips) of the drill bit, when length of approach is known. It's typically measured in millimeters (mm) or inches (in) and is usually printed on the shank of the drill bit is calculated using Diameter of Drill Bit = 2*Approach Distance/tan(pi/2-Drill Point Angle/2). To calculate Diameter of Drill Bit given Length of Approach, you need Approach Distance (A) & Drill Point Angle (θ). With our tool, you need to enter the respective value for Approach Distance & Drill Point Angle and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

Home

FREE PDFs

🔍 Search