Nozzle for providing coolant fluid to a cutting edge of a metal cutting tool and a metal cutting tool
A nozzle is arranged to provide coolant fluid to a cutting edge of a metal cutting tool. The nozzle includes at least one internal inlet coolant channel and at least one internal outlet coolant channel. The internal inlet coolant channel is connected to a coolant inlet and the at internal outlet coolant channel is connected to a coolant outlet for directing the coolant fluid to the cutting edge. The nozzle further includes a plenum chamber having at least one inlet opening connecting the internal inlet coolant channel and the plenum chamber and at least one outlet opening connecting the internal outlet channel and the plenum chamber. Each of the inlet openings have a cross-sectional area A1 i and each of the outlet openings have a cross-sectional area A2 i , wherein—Σ i=1 n A1 i >Σ i=1 m A2 i , where i is an integer, n is the number of inlet openings, and m is the number of outlet openings.
1. A nozzle arranged for providing coolant fluid to a cutting edge of a metal cutting tool, the nozzle comprising:
a first internal inlet coolant channel and a second internal inlet coolant channel; and
a first internal outlet coolant channel and a second internal outlet coolant channel, wherein the first and second internal inlet coolant channels are connected to a coolant inlet, and the first internal outlet coolant channel is connected to a first coolant outlet for directing the coolant fluid to the cutting edge, and the second internal outlet coolant channel is connected to a second coolant outlet for directing the coolant fluid to the cutting edge;
a bore arranged for receiving a fastening element;
a plenum chamber including a first inlet opening connecting the first internal inlet coolant channel and the at least one plenum chamber and a second inlet opening connecting the second internal inlet coolant channel and the plenum chamber, and
a first outlet opening connecting the first internal outlet channel and the plenum chamber and a second outlet opening connecting the second internal outlet channel and the plenum chamber, wherein the first inlet opening has a cross-sectional area A1 1 and the second inlet opening has a cross-sectional area A1 2 , and the first outlet openings has a cross-sectional area A2 1 and the second outlet opening has a cross-sectional area A2 2 , wherein (A1 1 +A1 2 )>(A2 1 +A2 2 ), and wherein the first and second inlet openings are located in a first plane and wherein the first and second outlet openings are located in a second plane P, wherein the first plane is parallel to the second plane P.
2. The nozzle according to claim 1 , wherein the first and second coolant outlets are located in a plane Q, wherein the plane P is parallel with the plane Q.
3. The nozzle according to claim 1 , wherein the first internal outlet coolant channel is linear with a constant cross-sectional area A2 1 is constant, and wherein the second internal outlet coolant channel is linear with a constant cross-sectional area A2 2 .
4. The nozzle according to claim 1 , wherein the first and second internal outlet coolant channels have a length L out , wherein 0.5 mm≤L out ≤2.0 mm.
5. The nozzle according to claim 1 , wherein
1.3
≤
A
1
1
+
A
1
2
A
2
1
+
A
2
2
≤
56.3
.
6. The nozzle according to claim 1 , wherein 1.5 mm 2 ≤A1 1 , A1 2 ≤15.0 mm 2 .
7. The nozzle according to claim 1 , wherein the plenum chamber has an internal volume V, wherein 40 mm 3 ≤V≤420 mm 3 .