PROBLEM TO BE SOLVED: To provide a work machine facilitating work at an edge of a field, particularly at a corner.SOLUTION: A work machine includes: a work part capable of working at a side position of a travel machine body and control means executing a normal work control mode operating the work part along travel of the travel machine body by keeping a work position and work direction of the work part at a predetermined state and an automatic straight travel work control mode operating the work part while keeping the predetermined state by automatically adjusting change of the work position and work direction along with change of a travel direction of the travel machine body. The control means determines a switching timing to the automatic straight travel work control mode based on a distance from the travel machine body to a corner of a field.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2017,JPO&INPIT【課題】圃場の端部、特に隅部の作業を容易にする作業機を提供すること。【解決手段】作業機は、走行機体の側方位置を作業可能な作業部と、前記作業部の作業位置および作業方向を所定の状態に維持して、前記走行機体の走行に沿って前記作業部を作業させる通常作業制御モードと、前記走行機体の走行方向の変化に伴う前記作業位置および前記作業方向の変化を自動調整することにより、前記所定の状態を維持したまま前記作業部を作業させる自動直進作業制御モードと、を実行する制御手段とを備え、前記制御手段は、前記走行機体から圃場の隅部までの距離に基づいて、前記自動直進作業制御モードへの切り替えタイミングを決定する。【選択図】図2
