FIELD: process engineering.
SUBSTANCE: borer tip comprises cutting blade attached to tip end face surface and support plates attached to borer body periphery. Note here that cutting blade edge, extending outward on periphery side and facing drill rotation direction, is, in fact, equal in axial direction to that support plate length in axial direction. Note also that top and rear edges of said extending edge is, in fact, leveled with support plate top and rear edges in circulation direction.
EFFECT: higher accuracy of bore machining.
5 cl, 5 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DRILL BODY | 1995 |
|
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