Company News

• Basic knowledge sharing of toolholder

  2020 / 11 / 26

  Taper classification of toolholder There are usually five standards and specifications for universal toolholder with taper of 7:24, namely NT (DIN 2080 / ISO 2583 type), DIN 69871 (German standard), IS0 7388 / 1 (International Standard), MAS BT (Japanese standard) and ANSI / ASME (American Standard). 1) Din 2080 (NT or ST for short) Din 2080 is a German standard, that is, the international standard ISO 2583. It is the NT type tool holder that we usually call NT type. It is used to tighten the tool handle on the traditional machine tool through the pull rod. It is also known as st in China. It can not be loaded by the manipulator of the machine tool, but by hand. 2) Din 69871 (JT, DIN, dat or DV for short) There are two types of DIN 69871, namely DIN 69871 A / AD and DIN 69871 B, The former is the center inner cooling, the latter is the flange inner cooling, other dimensions are the same. 3) ISO 7388 / 1 (IV or it for short) There is no difference between the installation dimension of the tool holder and DIN 69871 type, but because of the ISO 7388 / 1 type The D4 value of the tool holder is less than that of the din 69871 type tool holder, so the ISO 7388 / 1 tool holder is replaced It is no problem to install it on the machine tool with DIN 69871 taper hole, but i

• How to improve the surface finish of toolholder?

  2020 / 11 / 18

  The name of a process after finishing grinding and before coating is not unified at home and abroad, such as "edge passivation", "edge strengthening", "edge honing", "edge preparation" or "Er (edge radiating) treatment". Through deburring, leveling and polishing, the quality and service life of the tool can be improved. 1. Purpose of tool passivation and polishing: 1. Improve the service life of cutting tools. 2. Improve the machining efficiency of the machine tool. 3. Reduce the surface roughness of workpiece. 2. The main effects of tool passivation are as follows 1. Edge rounding: remove the edge burr to achieve accurate rounding. 2. The burr of cutting edge will cause tool wear and the surface of workpiece will become rough. 3. After passivation, the edge becomes very smooth, which greatly reduces the chipping and improves the surface finish of the workpiece. 3. Polishing treatment for row cutting groove: 1. Polish the tool groove evenly to improve the surface quality and tapping performance. 2. The smoother the groove surface is, the better the chip removal will be, and the higher cutting speed can be achieved; at the same time,

• How to improve the surface finish of toolholder?

  2020 / 10 / 28

  Product Description: the name of a process after finish grinding and before coating of cutting tools is not unified, such as "edge passivation", "edge strengthening", "edge honing", "edge preparation" or "Er (edge radiating) treatment". Through deburring, leveling and polishing, the quality and service life of the tool can be improved. 1. Purpose of tool passivation and polishing: 1. Improve the service life of cutting tools. 2. Improve the machining efficiency of the machine tool. 3. Reduce the surface roughness of workpiece. 2. The main effects of tool passivation are as follows 1. Edge rounding: remove the edge burr to achieve accurate rounding. 2. The burr of cutting edge will cause tool wear and the surface of workpiece will become rough. 3. After passivation, the edge becomes very smooth, which greatly reduces the chipping and improves the surface finish of the workpiece. 3. Polishing treatment for row cutting groove: 1. Polish the tool groove evenly to improve the surface quality and tapping performance. 2. The smoother the groove surface is, the better the chip removal will be, and the higher cutting speed can be achieved; at the same time,