Calculating the K-FactorSince the K

Calculating the K-Factor

Since the K-Factor is based on the property of the metal and its thickness there is no simple way to calculate it ahead of the first bend. Typically the K-Factor is going to be between 0 and .5. In order to find the K-Factor you will need to bend a sample piece and deduce the Bend Allowance. The Bend Allowance is then plugged into the above equation to find the K-Factor.

Begin by preparing sample blanks which are of equal and known sizes. The blanks should be at least a foot long to ensure an even bend, and a few inches deep to make sure you can sit them against the back stops. For our example let’s take a piece that is 14 Gauge, .075”, 4” Wide and 12” Long. The length of the piece won’t be used in our calculations. Preparing at least 3 samples and taking the average measurements from each will help
Set up your press brake with the desired tooling you’ll be using to fabricate this metal thickness and place a 90° bend in the center of the piece. For our example this means a bend at the 2” mark.
Once you’ve bent your sample pieces carefully measure the flange lengths of each piece. Record each length and take the average of lengths. The length should be something over half the original length. For our example the average flange length is 2.073”
Second measure the inside radius formed during the bending. A set of radius gauges will get you you fairly close to finding the correct measurement, however to get an exact measurement an optical comparator will give you the most accurate reading. For our example the inside radius is measured at .105”
Now that you have your measurements, we’ll determine the Bend Allowance. To do this first determine your leg length by subtracting the material thickness and inside radius from the flange length. (Note this equation only works for 90° bends because the leg length is from the tangent point.) For our example the leg length will be 2.073 – .105 – .075 = 1.893.
Subtract twice the leg length from the initial length to determine the Bend Allowance. 4 – 1.893 * 2 = .214.
Plug the Bend Allowance (BA), the Bend Angle (B

Results (Indonesian) 1:

Calculating the K-FactorSince the K-Factor is based on the property of the metal and its thickness there is no simple way to calculate it ahead of the first bend. Typically the K-Factor is going to be between 0 and .5. In order to find the K-Factor you will need to bend a sample piece and deduce the Bend Allowance. The Bend Allowance is then plugged into the above equation to find the K-Factor. Begin by preparing sample blanks which are of equal and known sizes. The blanks should be at least a foot long to ensure an even bend, and a few inches deep to make sure you can sit them against the back stops. For our example let’s take a piece that is 14 Gauge, .075”, 4” Wide and 12” Long. The length of the piece won’t be used in our calculations. Preparing at least 3 samples and taking the average measurements from each will help Set up your press brake with the desired tooling you’ll be using to fabricate this metal thickness and place a 90° bend in the center of the piece. For our example this means a bend at the 2” mark. Once you’ve bent your sample pieces carefully measure the flange lengths of each piece. Record each length and take the average of lengths. The length should be something over half the original length. For our example the average flange length is 2.073” Second measure the inside radius formed during the bending. A set of radius gauges will get you you fairly close to finding the correct measurement, however to get an exact measurement an optical comparator will give you the most accurate reading. For our example the inside radius is measured at .105” Now that you have your measurements, we’ll determine the Bend Allowance. To do this first determine your leg length by subtracting the material thickness and inside radius from the flange length. (Note this equation only works for 90° bends because the leg length is from the tangent point.) For our example the leg length will be 2.073 – .105 – .075 = 1.893. Subtract twice the leg length from the initial length to determine the Bend Allowance. 4 – 1.893 * 2 = .214. Plug the Bend Allowance (BA), the Bend Angle (B<), Inside Radius (IR) and Material Thickness (MT) into the below equation to determine the K-Factor (K). For our example it comes to

Results (Indonesian) 2:

Menghitung K-Factor Karena K-Factor didasarkan pada properti dari logam dan ketebalannya tidak ada cara sederhana untuk menghitung itu menjelang tikungan pertama. Biasanya K-Factor akan menjadi antara 0 dan 0,5. Dalam rangka untuk mencari K-Factor Anda akan perlu untuk menekuk sepotong sampel dan menyimpulkan Bend Allowance. The Bend Allowance kemudian dicolokkan ke persamaan di atas untuk menemukan K-Factor. Mulailah dengan menyiapkan kosong sampel yang ukuran yang sama dan dikenal. Kekosongan harus setidaknya satu kaki panjang untuk memastikan bahkan tikungan, dan beberapa inci untuk memastikan Anda dapat duduk mereka melawan kembali berhenti. Misalnya kita mari kita sepotong yang 14 Gauge, 0,075 ", 4" lebar dan 12 "panjang. Panjang potongan tidak akan digunakan dalam perhitungan. Mempersiapkan setidaknya 3 sampel dan mengambil pengukuran rata-rata dari masing-masing akan membantu Mengatur rem pers dengan perkakas yang diinginkan Anda akan menggunakan untuk membuat ketebalan logam ini dan menempatkan 90 ° tikungan di tengah potongan. Sebagai contoh kita ini berarti sebuah tikungan di 2 "mark. Setelah Anda membungkuk potongan sampel Anda hati-hati mengukur panjang flange masing-masing bagian. Merekam setiap panjang dan mengambil rata-rata panjang. Panjang harus sesuatu yang lebih dari setengah panjang aslinya. Misalnya kita panjang flange rata-rata adalah 2,073 "Kedua mengukur dalam radius yang terbentuk selama lentur tersebut. Satu set alat pengukur radius akan membuat Anda Anda cukup dekat untuk menemukan pengukuran yang benar, namun untuk mendapatkan pengukuran yang tepat pembanding optik akan memberikan pembacaan yang paling akurat. Sebagai contoh kita dalam radius diukur pada 0,105 "Sekarang bahwa Anda memiliki pengukuran Anda, kami akan menentukan Bend Allowance. Untuk melakukan hal ini pertama menentukan panjang kaki Anda dengan mengurangi ketebalan material dan dalam radius dari panjang flange. (Catatan persamaan ini hanya bekerja untuk 90 ° tikungan karena panjang kaki adalah dari titik singgung.) Sebagai contoh kita panjang kaki akan 2,073-0,105 -. 0,075 = 1,893 Kurangi dua kali panjang kaki dari panjang awal untuk menentukan Bend Allowance. 4-1,893 * 2 = 0,214. Colokkan Bend Allowance (BA), Bend Angle (B <), dalam Radius (IR) dan Bahan Tebal (MT) ke dalam persamaan di bawah ini untuk menentukan K-Factor (K). Misalnya kita datang ke