CN220050181U - Six-blade high-hardness die milling cutter - Google Patents
Six-blade high-hardness die milling cutter Download PDFInfo
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- CN220050181U CN220050181U CN202320579072.0U CN202320579072U CN220050181U CN 220050181 U CN220050181 U CN 220050181U CN 202320579072 U CN202320579072 U CN 202320579072U CN 220050181 U CN220050181 U CN 220050181U
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- 238000003801 milling Methods 0.000 title claims abstract description 24
- 230000002093 peripheral effect Effects 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001603 reducing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses a six-blade high-hardness die milling cutter, which relates to the technical field of cutters and comprises a cylindrical handle part and a cutting blade part, wherein the cutting blade part is positioned at the end part of the cylindrical handle part, the cutting blade part comprises six peripheral blades, six chip removal grooves and six end blades, and the six peripheral blades and the chip removal grooves spirally extend around the outer side wall of the cutting blade part; according to the utility model, six chip grooves are designed to be equal in pairs of teeth and unequal in the rest, because the chip grooves are unequal in graduation, each cutting edge cuts into a material and leaves a workpiece material at different time intervals, and the generated cutting force is not generated, transmitted and overlapped at fixed time intervals, so that resonance is reduced, and therefore, the cutting effect is better, the precision is higher, and the service life is longer.
Description
Technical Field
The utility model relates to the technical field of cutters, in particular to a six-blade high-hardness die milling cutter.
Background
The milling cutter is a rotary cutter for milling and has one or more cutter teeth, and during operation, each cutter tooth cuts off the allowance of a workpiece intermittently in sequence.
Among the prior art, patent application number is 201920416619.9's a novel six-blade milling cutter, this novel six-blade milling cutter, evenly seted up the chip removal recess between side cutting edge and the side cutting edge, can derive the metal bits fast, the cutter arbor is shorter than the cutter arbor of general six-blade milling cutter, difficult rupture, the upper end of cutter arbor passes through the connecting piece to be connected with the milling machine, the external screw thread has evenly been polished to the surface of the upper end of connecting piece, the connecting hole has evenly been seted up in the position at connecting piece middle part, adopt two kinds of connected modes, more nimble, the purpose of easy to assemble has been reached, difficult wearing and tearing, but because six-blade milling cutter generally is used for the cutting of high hardness material, the course of working produces cutting vibration very easily, influence cutting effect and cutter life, consequently, need a six-blade high hard die milling cutter.
Disclosure of Invention
The utility model aims at solving the problems that the six-edge milling cutter in the prior art is generally used for cutting high-hardness materials, cutting vibration is easy to generate in the processing process, the cutting effect is influenced, and the service life of a cutter is prolonged.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the six-blade high-hardness die milling cutter comprises a cylindrical handle part and a cutting blade part, and is characterized in that the cutting blade part is positioned at the end part of the cylindrical handle part, the cutting blade part comprises six peripheral blades, six chip removal grooves and six end blades, and the six peripheral blades and the chip removal grooves spirally extend around the outer side wall of the cutting blade part;
the indexing angles of the six chip grooves are respectively A1, A2, A3, A4, A5 and A6, wherein the angles of A1 and A4 are the same, the angles of A2 and A5 are the same, the angles of A3 and A6 are the same, and the angles of A1, A2 and A3 are different;
the end edges are positioned at the end parts of the peripheral edges, which are far away from one side of the cylindrical handle, and end chip flutes are arranged between two adjacent end edges.
It is further characterized in that,
the angle difference between the maximum angle and the minimum angle in A1, A2 and A3 ranges from 5 degrees to 7 degrees, the chip removal groove is provided with a groove front angle sigma, and the degree of the groove front angle sigma is 10 degrees.
The end chip flute comprises two first chip flutes which are oppositely arranged, two second chip flutes which are oppositely arranged and two third chip flutes which are oppositely arranged, wherein one end of the first chip flute, which is close to the center point of the end part of the cutting edge, passes through the center point of the end part of the cutting edge, and one end of the second chip flute and one end of the third chip flute, which are close to the center point of the end part of the cutting edge, do not pass through the center point of the end part of the cutting edge.
The end blade is provided with two relief angles, wherein the two relief angles of the end blade are an end face relief angle beta and an end face relief angle gamma respectively, the angle of the end face relief angle beta is 8 degrees, and the angle of the end face relief angle gamma is 16 degrees.
The Zhou Renju is provided with an arc back angle alpha, and the angle of the arc back angle alpha is 9-10 degrees.
The angle of the front angle epsilon of the peripheral edge is 8-10 degrees.
The peripheral edge part extends to the whole peripheral edge along the inner side of the peripheral edge part, and a negative chamfer is arranged at the end part of the peripheral edge, and the chamfer angle delta of the negative chamfer is 11-13 degrees.
The structure of the utility model can achieve the following beneficial effects:
(1) When the device is used, the six chip grooves are designed to be equal in pairs, and the rest of the six chip grooves are designed to be unequal, so that when the six-blade milling cutter is used for processing a high-hardness die steel material in a high-speed rotation mode, because the chip grooves are unequal in graduation, each cutting blade cuts into the material and leaves the workpiece material at different time intervals, the generated cutting force is not generated, transmitted and overlapped at fixed time intervals, resonance is reduced, the cutting effect is better, the precision is higher, and the service life is longer;
(2) By adding the negative chamfer on one side of the peripheral edge, the strength of the cutting edge is greatly enhanced, and the wear resistance and the breakage resistance of the cutter are improved, so that the service life of the cutter is prolonged.
(3) The chip groove graduation difference is 5-7 degrees, so that the problems that when the chip groove graduation difference is too large, the cutting quantity of individual cutting edges is large, abrasion is serious, and when the chip groove graduation difference is too small, the vibration reducing effect is poor are avoided.
Drawings
Fig. 1 is a schematic structural view of the present embodiment;
fig. 2 is a schematic diagram of a junk slot structure in the present embodiment;
fig. 3 is a schematic view of the end face structure of the cutting edge portion in the present embodiment;
FIG. 4 is a schematic view of a transverse section of the cutting edge portion in the present embodiment;
FIG. 5 is an enlarged schematic view of the structure of FIG. 4A;
fig. 6 is a schematic view of a vertical section of the cutting edge portion in the present embodiment;
fig. 7 is an enlarged schematic view of the structure of fig. 6B.
In the figure: 1. a cylindrical shank; 2. a cutting edge portion; 3. a chip removal groove; 4. negative chamfering; 5. a peripheral edge; 6. an end blade; 7. an end chip pocket; 71. a first chip pocket; 72. a second chip pocket; 73. and a third chip flute.
Detailed Description
In a first embodiment, referring to fig. 1-7, a six-edge high-hardness die milling cutter comprises a cylindrical shank portion 1 and a cutting edge portion 2, wherein the cutting edge portion 2 is located at an end of the cylindrical shank portion 1, the cutting edge portion 2 comprises six peripheral edges 5, six chip grooves 3 and six end edges 6, and the six peripheral edges 5 and the chip grooves 3 extend spirally around an outer side wall of the cutting edge portion 2;
the indexing angles of the six chip grooves 3 are respectively A1, A2, A3, A4, A5 and A6, the angles of A1 and A4 are the same, the angles of A2 and A5 are the same, the angles of A3 and A6 are the same, and the angles of A1, A2 and A3 are different;
the end edges 6 are positioned at the end of the peripheral edge 5, which is far away from the cylindrical handle 1, and end chip flutes 7 are arranged between two adjacent end edges 6.
Based on the above structure, by adopting the design that six chip grooves 3 are equal in pairs, and the rest is unequal, namely a1=a4, a2=a5 and a3=a6 as shown in fig. 2, but a1+.a2+.a3, when the six-blade milling cutter is used for processing high-hardness die steel materials in a high-speed rotation mode, because the indexing of the chip grooves 3 is unequal, each cutting blade cuts into the materials and leaves away from the workpiece materials at different time intervals, the generated cutting force is not generated, transmitted and overlapped at fixed time intervals, so that resonance is reduced, the cutting effect is better, the precision is higher, and the service life is longer.
Wherein, the angle difference between the maximum angle and the minimum angle in A1, A2 and A3 ranges from 5 degrees to 7 degrees, the chip groove 3 has a groove front angle sigma, the degree of the groove front angle sigma is 10 degrees, when the index difference of the chip groove 3 ranges from 5 degrees to 7 degrees, the index difference of the chip groove 3 is the best at this time, when the index difference of the chip groove 5 is too large, the cutting quantity of individual cutting edges is large, the abrasion is serious, and when the index difference of the chip groove 5 is too small, the vibration reducing effect is not good.
The end chip flute 7 includes two first chip flutes 71, two second chip flutes 72 and two third chip flutes 73, wherein the first chip flute 71 passes through the end center point of the cutting edge 2, and the second chip flute 72 and the third chip flute 73 do not pass through the end center point of the cutting edge 2.
The end edge 6 is provided with two rear angles, the two rear angles of the end edge 6 are an end face rear angle beta and an end face rear angle gamma respectively, the angle of the end face rear angle beta is 8 degrees, the angle of the end face rear angle gamma is 16 degrees, and friction between the end face and the bottom surface of a workpiece is prevented and the sharpness of an end face cutting edge is improved by arranging the end face rear angle beta and the end face rear angle gamma.
Wherein the peripheral edge 5 has a circular arc relief angle alpha, and the angle of the circular arc relief angle alpha is 9-10 degrees.
Wherein the angle of the rake angle epsilon of the peripheral edge 5 is 8 DEG to 10 deg.
Wherein, the end of the peripheral edge 5 extends to the whole peripheral edge 5 along the inner side of the edge of the peripheral edge 5, and the angle of the chamfer angle delta of the negative chamfer 4 is 11-13 degrees.
The working principle of the utility model is as follows: by using six flutes 3 equal in pairs, the remaining unequal designs, namely a1=a4, a2=a5, a3=a6, but a1+.a2+.a3, as shown in fig. 2, the six-bladed milling cutter works with high-speed rotation for high-hardness die steel materials, because the flute 3 indexing is unequal, each cutting edge cuts into the material and leaves the workpiece material at different time intervals, so that the generated cutting forces are not generated, transferred and superimposed at fixed time intervals to reduce resonance, thereby having better cutting effect, higher precision and longer service life.
By adding the negative chamfer 4 on one side of the peripheral edge 5, the strength of the cutting edge is greatly enhanced, and the wear resistance and breakage resistance of the cutter are improved, thereby prolonging the service life of the cutter.
The above is only a preferred embodiment of the present utility model, and the present utility model is not limited to the above examples. It is to be understood that other modifications and variations which may be directly derived or contemplated by those skilled in the art without departing from the spirit and concepts of the present utility model are deemed to be included within the scope of the present utility model.
Claims (6)
1. The six-blade high-hardness die milling cutter comprises a cylindrical handle part (1) and a cutting blade part (2), and is characterized in that the cutting blade part (2) is positioned at the end part of the cylindrical handle part (1), the cutting blade part (2) comprises six peripheral blades (5), six chip grooves (3) and six end blades (6), and the six peripheral blades (5) and the chip grooves (3) spirally extend around the outer side wall of the cutting blade part (2);
the indexing angles of the six chip removal grooves (3) are respectively A1, A2, A3, A4, A5 and A6, wherein the angles of A1 and A4 are the same, the angles of A2 and A5 are the same, the angles of A3 and A6 are the same, and the angles of A1, A2 and A3 are different;
the end edges (6) are positioned at the end parts of the peripheral edges (5) at the side far away from the cylindrical handle (1), and end chip flutes (7) are arranged between two adjacent end edges (6);
the end part of the peripheral edge (5) extends to the whole peripheral edge (5) along the inner side of the edge part of the peripheral edge (5), and the angle of the chamfer angle delta of the negative chamfer (4) is 11-13 degrees.
2. The six-edged high hard die milling cutter according to claim 1, wherein: the angle difference between the maximum angle and the minimum angle in A1, A2 and A3 ranges from 5 degrees to 7 degrees, the chip removal groove (3) is provided with a groove front angle sigma, and the degree of the groove front angle sigma is 10 degrees.
3. The six-edged high hard die milling cutter according to claim 1, wherein: the end chip flute (7) comprises two first chip flutes (71) which are oppositely arranged, two second chip flutes (72) which are oppositely arranged and two third chip flutes (73) which are oppositely arranged, one end of the first chip flute (71) which is close to the end center point of the cutting edge part (2) passes through the end center point of the cutting edge part (2), and one end of the second chip flute (72) and one end of the third chip flute (73) which are close to the end center point of the cutting edge part (2) do not pass through the end center point of the cutting edge part (2).
4. The six-edged high hard die milling cutter according to claim 1, wherein: the end edge (6) is provided with two relief angles, the two relief angles of the end edge (6) are an end face relief angle beta and an end face relief angle gamma respectively, the angle of the end face relief angle beta is 8 degrees, and the angle of the end face relief angle gamma is 16 degrees.
5. The six-edged high hard die milling cutter according to claim 1, wherein: the peripheral edge (5) is provided with an arc relief angle alpha, and the angle of the arc relief angle alpha is 9-10 degrees.
6. The six-edged high hard die milling cutter according to claim 1, wherein: the angle of the front angle epsilon of the peripheral edge (5) is 8-10 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320579072.0U CN220050181U (en) | 2023-03-22 | 2023-03-22 | Six-blade high-hardness die milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320579072.0U CN220050181U (en) | 2023-03-22 | 2023-03-22 | Six-blade high-hardness die milling cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220050181U true CN220050181U (en) | 2023-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320579072.0U Active CN220050181U (en) | 2023-03-22 | 2023-03-22 | Six-blade high-hardness die milling cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220050181U (en) |
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- 2023-03-22 CN CN202320579072.0U patent/CN220050181U/en active Active
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