Cutting tool
A cutting tool comprises: a plate member which is provided, at a leading end thereof, edge parts; a support member which supports the plate member so as to cause the edge parts to be projected; and a coolant supply part which has an ejection port and which ejects, from the ejection port, fluid that cools the edge parts. The support member has a non-contact surface which forms a gap with respect to an outer side surface of the plate member. The gap is opened toward a side where the edge parts are provided. The ejection port is arranged in the gap, and the ejection port ejects the fluid toward the plate member.
1. A cutting tool which forms a groove in a workpiece, the cutting tool comprising:
a plate member which is provided, at a leading end thereof, with edge parts, the plate member having an outer circumferential surface that is curved in a substantially circular arc shape in a front view;
a support member which supports the plate member so as to cause the edge parts to be projected; and
a fluid supply part which has an ejection port and which ejects, from the ejection port, fluid that cools the edge parts, wherein:
the support member has a non-contact surface which forms a gap with respect to an outer side surface of the plate member;
the gap is opened toward a side where the edge parts are provided;
the ejection port is arranged in the gap, and the ejection port ejects the fluid toward the plate member;
the non-contact surface is provided at an end portion of a wall surface of the support member;
the ejection port is provided so as to be open in the non-contact surface such that the fluid ejected from the ejection port adheres to the outer circumferential surface of the plate member; and
the ejection port is provided so as to be open such that a normal of the ejection port is directed toward the plate member.
2. The cutting tool according to claim 1 , wherein:
the fluid supply part has, inside the support member, a flow path through which the fluid passes; and
the ejection port is provided so as to be open in the non-contact surface.
3. The cutting tool according to claim 2 , wherein the non-contact surface is formed by notching an end of the support member.
4. The cutting tool according to claim 1 , wherein the plate member is curved so as to be projected toward the support member.
5. The cutting tool according to claim 1 , wherein:
the plate member is configured so as to be slidable with respect to the support member; and
the cutting tool comprises a fixing member for fixing the plate member.
6. The cutting tool according to claim 5 , wherein the fixing member has a pressure member which presses the plate member toward the support member and a fastening member which fastens the pressure member to the support member.
7. The cutting tool according to claim 1 , wherein:
the plate member has a body having a plate shape and a cutting insert having the edge parts; and
the cutting insert is removably mounted on the body.
8. The cutting tool according to claim 2 , wherein the plate member is curved so as to be projected toward the support member.
9. The cutting tool according to claim 3 , wherein the plate member is curved so as to be projected toward the support member.
10. The cutting tool according to claim 2 , wherein:
the plate member is configured so as to be slidable with respect to the support member; and
the cutting tool comprises a fixing member for fixing the plate member.
11. The cutting tool according to claim 3 , wherein:
the plate member is configured so as to be slidable with respect to the support member; and
the cutting tool comprises a fixing member for fixing the plate member.
12. The cutting tool according to claim 4 , wherein:
the plate member is configured so as to be slidable with respect to the support member; and
the cutting tool comprises a fixing member for fixing the plate member.
13. The cutting tool according to claim 2 , wherein:
the plate member has a body having a plate shape and a cutting insert having the edge parts; and
the cutting insert is removably mounted on the body.
14. The cutting tool according to claim 3 , wherein:
the plate member has a body having a plate shape and a cutting insert having the edge parts; and
the cutting insert is removably mounted on the body.
15. The cutting tool according to claim 4 , wherein:
the plate member has a body having a plate shape and a cutting insert having the edge parts; and
the cutting insert is removably mounted on the body.
16. The cutting tool according to claim 5 , wherein:
the plate member has a body having a plate shape and a cutting insert having the edge parts; and
the cutting insert is removably mounted on the body.
17. The cutting tool according to claim 6 , wherein:
the plate member has a body having a plate shape and a cutting insert having the edge parts; and
the cutting insert is removably mounted on the body.