Work machine

A work machine comprising:

• an output shaft driven by a power of a prime mover;
• a disk-shaped circular saw blade held at an end portion of the output shaft in one side in an axial direction of the output shaft;
• a saw cover that covers the circular saw blade;
• and
• a discharge channel provided at the saw cover, disposed radially outside of the circular saw blade, with a discharge opening opened to one side in the axial direction, and discharges chips that flow backward inside the saw cover during processing through the discharge opening,
• wherein the discharge channel includes:
• an inlet portion formed at a front end of the discharge channel and communicate an inside of the saw cover with an inside of the discharge channel;
• a side guide surface that constitutes a side surface on other side in the axial direction in the discharge channel and inclines toward one side in the axial direction toward a rear side when viewed from above;
• and
• a rear guide surface that constitutes a rear surface of the discharge channel, is connected to a rear end of the side guide surface, and changes the direction of the chips flowing backward along the side guide surface to one side in the axial direction;
• and
• a lower-guide surface that constitutes a lower surface of the discharge channel, is disposed adjacent to the side guide surface and the rear guide surface, and is inclined downward toward one side in the axial direction when viewed from front-back direction,
• wherein the lower-guide surface includes:
• an upper lower-guide surface that constitutes an upper portion of the lower-guide surface;
• and
• a lower lower-guide surface that constitutes a lower portion of the lower-guide surface,
• wherein an inclination angle of the upper lower-guide surface with respect to up-down direction is set smaller than the inclination angle of the lower lower-guide surface with respect to the up-down direction.

A work machine comprising:

• an output shaft driven by a power of a prime mover;
• a disk-shaped circular saw blade held at an end portion of the output shaft in one side in an axial direction of the output shaft;
• a saw cover that covers the circular saw blade from at least one side in the axial direction and from radially outside of the circular saw blade;
• and
• a discharge channel provided at the saw cover, disposed radially outside of the circular saw blade, formed in a concave shape with a discharge opening opened to one side in the axial direction, and discharges chips that flow backward inside the saw cover during processing through the discharge opening,
• wherein the discharge channel includes:
• an inlet portion formed at a front end of the discharge channel and opened to a front side to communicate an inside of the saw cover with an inside of the discharge channel;
• a side guide surface that constitutes a side surface on the other side in the axial direction in the discharge channel and inclines toward one side in the axial direction toward a rear side when viewed from above;
• and
• a rear guide surface that constitutes a rear surface of the discharge channel, is connected to a rear end of the side guide surface, and inclines rearward toward one side in the axial direction when viewed from above,
• wherein, at least one of the side guide surface and the rear guide surface is configured as a plane surface, and an inclination angle of the rear guide surface with respect to front-back direction when viewed from above is set to be 60 degrees or more and greater than the inclination angle of the side guide surface with respect to the front-back direction.