The spindle is: BT50 will use BT50 handle.
The spindle is: NT50 will use NT50 handle.
Extended data:
Tool shank type
1, HSK handle
HSK tool system is a new type of high-speed short taper tool holder, and its interface adopts the way of simultaneous positioning of conical surface and end surface. The tool rest is hollow, and the short taper of110 is beneficial to realize light and high-speed tool change.
2. Kilometer handle
The structure of this tool holder is similar to that of HSK tool holder, and it also adopts the hollow short cone structure with the taper of110, and also adopts the working mode of simultaneous positioning and clamping of the conical surface and the end surface. The patent protection of KM handle structure limits the rapid popularization and application of this system.
3. NC5 handle
It adopts hollow short cone structure, and the taper is110. It also adopts the working mode of simultaneous positioning and clamping of conical surface and end surface. Because the torque is transmitted by the keyway on the cylinder at the front end of the NC5 tool holder, there is no keyway for transmitting torque at the rear end of the tool holder, so the axial dimension is shorter than that of the HSK tool holder.
The biggest difference between NC5 handle and the first two types of handles is that the handle does not adopt a thin-walled structure, and an intermediate taper sleeve is added at the conical surface of the handle. KM tool holder and HSK tool holder compensate the manufacturing error of tool holder and spindle through the deformation of thin wall, and ensure the reliable contact between the conical surface and the end surface, while NC5 tool holder achieves this goal through the axial movement of the middle conical sleeve.
The axial moving power of the intermediate taper sleeve comes from the disc spring on the end face of the handle. Because of the strong error compensation ability of the intermediate taper sleeve, the NC5 tool holder has slightly lower requirements on the manufacturing accuracy of the spindle and the tool holder itself.
4. Cato handle
The structure of this tool holder is not conical, but triangular cone, its edge is circular arc, and the taper is 1/20. The hollow short cone structure adopts the cone surface and the end surface to contact and locate at the same time. Triangular cone structure can realize two-way torque transmission without sliding and driving key, which eliminates the dynamic balance problem caused by driving key and keyway.
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