Strudies on Harvesting Machines (19)

Charactaristics of Cutter (1·2) E·O-4 type Cutting Tester and Charactaristics of V-type knives

Abstract

New Cutting Tester
1. We produced a new cutting tester-that is E·O-4 type Cutting tester, in 1955. (Fig. 1-2)
2. We have finished series of cutting tests by the group of rice, wheat and barley stems using the reciprocating cutters, rotary cutters and V-type knives.
3. In the field, the cutter bar travels forward and cuts crops, but in our cutting tester, the cutter bar is fixed and the groups of stems travel forward, on the contrary.
4. In our cutting tester, torque pick up and draft pick up of strain gauge are equipped.
5. By a crop grip frame, we can get some density of crops just as we please.
Charactaristics of V-type Knives.
1. We have done cutting test for V-type knives equipped in hand operated harvesting tool, on E-O-4 type cutting tester by cutting rice crops. (Fig. 3)
2. When the cutting width is narrow, the wider a included angle (α), the larger the cutting resistance.
3. When the cutting width is wide, the included angle have the ideal angle, that give the smallest cutting resistance. (Fig. 4)