戻る
The number varies depending on the material and shape to be processed, but it is a set of multiple taps (the diameter of the screw gradually increases), and we accept special products.
Applications/Specifications
It is used for screwing long threads or difficult-to-cut materials. Combinations of two to three screws with different diameters and bite lengths are common, and high precision and good finish surfaces can be obtained. In addition, depending on the working conditions, the diameter may be increased with a single tap.
In tap machining, if the torque load is large and cannot be processed, the torque load may be reduced by the following method.
(1) A tap with a long length with a bite is a method that takes advantage of the low torque.
straight fluted tap Processing is carried out in the order of No. 1 (9 mountains with food), No. 2 (5 mountains with food), and No. 3 (1.5 mountains with food).
(2) size of the target screw A method of fabricating and processing a tap with a smaller diameter than the intended one in a separate manner.
Later, by machining with the tap of the target size , the amount of cutting in the radial direction is reduced and the torque load is reduced.
A diameter increase tap is a tap that aims to reduce the amount of cutting in the radial direction as shown in (2).
In particular, in trapezoidal screw machining, where a large torque load is applied, a machining method using an increased diameter tap is often used.
For this reason, taps for trapezoidal screws are sometimes referred to as increasing diameter taps.