扁方柄刀具用螺钉压紧刀具夹(立铣刀刀夹).第1部分:刀柄驱动系统的尺寸

[中文适用范围]： 本部分规定了带紧固螺钉的刀具夹头(立铣刀夹头)及其紧固螺钉的尺寸，还给出厂夹头端面的最 大直径。这种夹头用于按GB／T 6131．2的削平型直柄刀具的传动。 本部分规定了两种传动型式： —一一孔径d1≤20 mm的夹头，用于传动单削平型直柄刀具。这类刀具既町做成单头的也可做成双 头的。 ——孔径d1≥25 mm的夹头，用于传动双削平型直柄刀具。这类刀具只做成单头的。 注：各型夹头的连接尺‘十和带紧固螺钉的刀具夹头(立铣刀夹头)的标记按GB／T 6133．2的规定。 [外文原描述]： ISO 5414-1 lays down the dimensions of tool chucks (end mill holders) with clamp screws designed for driving flatted cylindrical shanks in accordance with ISO 3338-2 and specifies the clamp screws used. It also gives the maximum diameter of the chuck nose. ISO 5414-1 defines two types of drive: chucks with bores equal to or less than 20 mm intended for driving cylindrical shank tools with a single flat, these tools being provided with either a single or a double cutting part; chucks with bores equal to or more than 25 mm intended for driving cylindrical shank tools with a double flat, these tools being provided with a single cutting part only.