Каталог Tungaloy глубокое сверление 1 - страница 21

Предыдущая страница Следующая страница

Навигация

Cu t ting condition a nd chip form

Chip form in deep hole drilling Chip size optimization

Chip form plays a key role in STS (Single tube system)Generally, chip length should be 3 - 4 times its width,
and DTS (Double tube system) while large-volume andbut tends to be longer with difficult-to-cut materials. In
high-pressure coolant do so as well. Because chipsthat case, chip evacuation will be improved by making
are removed through the tube with coolant, proper chipchips thinner, usually by reducing the feed rate.
formation is essential for smooth and steady evacuation.Chip form variations according to different cutting

speeds and feed rates are shown in Table 1 below. To shorten chip sizes, either decrease the cutting speed or increase the feed rate. Chip formation

Chip formation is affected by multiple factors, such as workpiece material, chipbreaker geometry, cutting speed, feed, type of coolant and coolant temperature. Suitable chip formation depends on cutting operation but is controllable by changing the cutting conditions.

Table 1

0.10 0.15 0.20

Condition f Workpiece material: Low alloy steel (AISI4340)

Feed: (mm/rev)