| 摘要 |
The device comprises a body (1) with a clamping surface (4), and fixture components (19v,19h) by means of which a left ploughshare (30v) and a right ploughshare (30h) are fixable in predetermined positions on the clamping surface on opposite sides of and symmetrically in relation to a rotary shaft (7), which is supported by the body (1) above the clamping surface (4). - A cutting straight edge is provided which via one or more arms (11,12) extending from the rotary shaft is supported at a distance from and with a predetermined orientation relative to the rotary shaft (7), so that the cutting straight edge (13) can be turned around the rotary shaft between two end positions, in which the straight edge locates against a left and a right ploughshare clamped in the predetermined positions. During a first work stage, the ploughshares can have their worn parts evenly cut away (31v) along the cutting straight edge (13). |
