The use of wood milling cutter in life

Shovel teeth molding wood cutting tct saw blade tooth back curve is generally circular curve made Archimedean spiral or circle with the wood milling cutter center offset, in order to ensure that the amount of change in a number of wood milling cutter teeth back after regrinding after a small angle . Archimedes spiral equation in polar coordinates is: R = C θ Where:? R-- radially; C-- constant; θ-- polar angle. Archimedes spiral tooth back angle at any point after the calculation according to the formula: Formula: R-- tooth back to any point in diameter; R '- tooth back at any point the first cutting disc derivative of the path; θ- - tooth back at any point of the polar angle. Be seen from the above equation, α changes with θ. Since the value of θ itself is large (close to 2π), and a smaller variation range (less than ε =), so the change amount α is small. According to calculations, in general, change α is not more than 1 ° 30 '. So, in fact, can not consider changes in the posterior horn. When using the arc center offset curve for tooth back curve, although the changed angle α to be bigger, but still meet the requirements of the wood end mill cutter. After milling angle α on the working drawings are usually the amount of K by shovel teeth for labels.