Grooving tool

A grooving tool comprising:

• a cutting insert including a cutting edge;
• a holder configured to hold the cutting insert;
• and
• a coolant flow path extending through an inside of the holder,
• wherein the cutting edge includes a cutting edge section extending in a tool width direction,
• the holder includes an insert mounting seat on which the cutting insert is disposed, and a pair of jaw parts disposed on an upper side and a lower side of the insert mounting seat and contact with the cutting insert from upper and lower directions,
• at least one of the jaw parts has a plate shape extending in a direction perpendicular to the tool width direction, forms a curved shape as viewed from a tool distal end side, and has a plate thickness that is decreased as a distance from the insert mounting seat is increased in the upper or lower direction,
• the coolant flow path includes a jaw part flow path extending through an inside of the at least one of the jaw parts,
• the jaw part flow path includes:
• a guide flow path section, and
• an ejection flow path section that communicates with the guide flow path section, is disposed on the tool distal end side with respect to the guide flow path section and on a side closer to the insert mounting seat in the vertical direction, and is open at an end part of the jaw part on the tool distal end side,
• a channel cross section of the guide flow path section has a vertically elongated shape with a dimension in the vertical direction larger than a dimension in the tool width direction, and
• a channel cross section of the ejection flow path section has a laterally elongated shape with a dimension in the tool width direction larger than a dimension in the vertical direction.