CN214769211U - Four-edge round nose milling cutter for stainless steel processing - Google Patents
Four-edge round nose milling cutter for stainless steel processing Download PDFInfo
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- CN214769211U CN214769211U CN202120098102.7U CN202120098102U CN214769211U CN 214769211 U CN214769211 U CN 214769211U CN 202120098102 U CN202120098102 U CN 202120098102U CN 214769211 U CN214769211 U CN 214769211U
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Abstract
The utility model discloses a four-edge round nose milling cutter for stainless steel processing, which comprises a cutter main body, wherein one end of the cutter main body is a cutting part, the other end of the cutter main body is a handle part for installing a cutter handle, the cutting part is provided with four spiral cutting edges, spiral chip grooves are arranged between adjacent spiral cutting edges, the front end of the cutting part is provided with four cutting end edges, and the cutting end edges are connected with the spiral cutting edges in a one-to-one correspondence manner through arc edges; the cutting end blade is provided with an end blade front cutter surface, and the cutting end blade is provided with an end blade first rear cutter surface and an end blade second rear cutter surface; the arc blade is formed with an arc blade front blade surface, and the arc blade is formed with an arc blade rear blade surface. The utility model arranges the front cutter face and the rear cutter face on the arc edge and the cutting end edge of the cutter head, thereby ensuring the sharpness of the cutting part and simultaneously enhancing the structural strength of the cutting edge, and the anti-tipping performance of the cutting part is better; the reinforced coating of the cutting part enhances the wear resistance of the cutting edge, thereby prolonging the service life.
Description
Technical Field
The utility model relates to a round nose milling cutter especially relates to a four-edged round nose milling cutter for stainless steel processing.
Background
In the modern industrial machining industry, new materials are continuously developed, the application of the special stainless steel is more and more extensive, and the special stainless steel is particularly applied to the industries of aerospace, ships, medical treatment and the like of high-added-value precision machining. The most important cutter in the precision machining of the round nose milling cutter has the advantages that the precision is high, the service life of the cutter is long, one milling cutter needs to be machined as far as possible in one fine machining process, and machining errors caused by cutter changing are avoided. At present, the general round nose milling cutter is difficult to achieve the precision required by finish machining in precision, particularly difficult to achieve long-time machining in the service life of the cutter, mainly embodied in that the cutter point of the cutter is worn, so that certain deviation can be generated in precision and size, and the service life of the cutter is prolonged, and the round nose milling cutter is increasingly researched and paid attention to in all directions. Accordingly, the prior art is yet to be improved and developed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a four-edged round nose milling cutter for stainless steel processing is provided, the life of having solved the cutter is short, long-time processing, and the knife tip of cutter weares and teares for precision and size produce the problem of certain deviation.
The technical scheme that the utility model adopts for solving the above technical problems is to provide a four-edge round nose milling cutter for stainless steel processing, which comprises a cutter main body, wherein one end of the cutter main body is a cutting part, the other end is a handle part for installing a cutter handle, the cutting part is provided with four spiral cutting edges, spiral chip grooves are arranged between adjacent spiral cutting edges, the front end of the cutting part is provided with four cutting end edges, and the cutting end edges and the spiral cutting edges are connected in one-to-one correspondence through arc edges; the cutting end blade and the wall surface of the spiral chip groove facing to the rotation direction of the cutter body form an end blade front cutter surface, and the cutting end blade and the wall surface of the spiral chip groove facing to the opposite rotation direction of the cutter body form an end blade first rear cutter surface and an end blade second rear cutter surface in sequence; the arc blade forms an arc blade front blade surface connected with the end blade front blade surface, and the arc blade forms an arc blade rear blade surface.
Further, the helical cutting edges and the helical flutes are symmetrically distributed about the axial center of the tool body, the cutting end edges are symmetrically distributed about the axial center of the tool body, and the cutting end edges are collected at the axial center of the cutting portion front end.
Further, the rake angle formed by the contact of the end edge rake face and the workpiece is 0-4 degrees, the first relief angle formed by the contact of the end edge first relief face and the workpiece is 5-10 degrees, and the second relief angle formed by the contact of the end edge second relief face and the workpiece is 15-20 degrees.
Further, the radius of the arc blade is 0.48-0.52 mm, and the arc radian of the arc blade is 90 degrees; the front angle formed by the contact of the front cutter face of the circular arc edge and the workpiece is-5-0 degrees, and the back angle formed by the contact of the back cutter face of the circular arc edge and the workpiece is 0-4 degrees.
Further, the end edge rake face and the adjacent end edge second flank face intersect to form a tooth gap, and the included angle between the bottom end of the tooth gap and the cutting end edge is 40-45 degrees.
Furthermore, the included angle between the cutting end edge and the axial line of the cutter main body is 87-89 degrees.
Further, a cutting edge flank surface is formed on a wall surface of the spiral cutting edge opposite to the spiral chip groove in the direction of rotation of the tool body, and a relief angle formed by the cutting edge flank surface contacting the workpiece is 10 ° to 16 °.
Further, the outer surface of the cutting part is provided with a reinforced coating, and the reinforced coating sequentially comprises a wear-resistant layer and an oxidation-resistant layer from inside to outside.
Furthermore, the cutter main body is made of a material with Co content more than 8% and bending strength more than 3600N/mm2The hard alloy bar stock.
The utility model discloses contrast prior art has following beneficial effect: the four-blade round nose milling cutter for stainless steel processing provided by the utility model has the advantages that the arc blade and the cutting end blade of the cutter head are provided with the front cutter face and the rear cutter face, so that the structural strength of the blade is enhanced while the blade is sharp; the arc blade is protected during feeding, so that the arc blade has better anti-tipping performance and longer service life; the reinforced coating of the cutting part enhances the wear resistance of the cutting edge, thereby prolonging the service life.
Drawings
Fig. 1 is a schematic structural diagram of a four-edged round nose milling cutter for stainless steel processing according to an embodiment of the present invention;
FIG. 2 is a schematic view of a four-edged round nose milling cutter cutting portion for stainless steel processing according to an embodiment of the present invention;
fig. 3 is a side view of a four-edged round nose milling cutter for stainless steel processing according to an embodiment of the present invention;
fig. 4 is a cross-sectional view of a cutting portion of a four-edged round nose milling cutter for stainless steel processing according to an embodiment of the present invention.
In the figure:
1. a handle; 2. a cutting portion; 3. a helical cutting edge; 4. a spiral chip groove; 5. cutting an end blade; 6. a circular arc edge; 7. an end blade rake surface; 8. an end edge first relief surface; 9. an end blade second relief surface; 10. a circular arc edge rake face; 11. a circular arc blade rear knife face; 12. a cutting edge flank surface.
Detailed Description
The invention is further described with reference to the following figures and examples.
Fig. 1 is a schematic structural view of a four-edged round nose milling cutter for stainless steel processing according to an embodiment of the present invention.
Referring to fig. 1, the four-edged round nose milling cutter for stainless steel processing according to the embodiment of the present invention includes a cutter body, one end of the cutter body is a cutting portion 2, the other end of the cutter body is a handle portion 1 for handle installation, the cutting portion 2 is provided with four spiral cutting edges 3, a spiral chip groove 4 is provided between adjacent spiral cutting edges 3, four cutting end edges 5 are provided at the front end of the cutting portion 2, and the cutting end edges 5 and the spiral cutting edges 3 are connected through arc edges 6 in a one-to-one correspondence manner. The helical cutting edges 3 and the helical flutes 4 are symmetrically distributed about the axis of the tool body, the cutting end edges 5 are symmetrically distributed about the axis of the tool body, and the cutting end edges 5 are collected at the front end axis of the cutting portion.
Referring to fig. 2 and 3, in the four-edged round nose milling cutter for processing stainless steel according to the embodiment of the present invention, the wall surfaces of the cutting end edge 5 and the spiral chip groove 4 facing the rotation direction of the cutter body form an end edge front cutter surface 7, and the wall surfaces of the cutting end edge 5 and the spiral chip groove 4 facing the rotation direction of the cutter body sequentially form an end edge first rear cutter surface 8 and an end edge second rear cutter surface 9; the arc blade 6 forms an arc blade front blade surface 10 connected with the end blade front blade surface 7, and the arc blade 6 forms an arc blade rear blade surface 11.
Specifically, the front angle formed by the contact of the end edge front cutter face 7 and the workpiece is 0-4 degrees, the first back angle formed by the contact of the end edge first back cutter face 8 and the workpiece is 5-10 degrees, and the second back angle formed by the contact of the end edge second back cutter face 9 and the workpiece is 15-20 degrees; the sharpness of the blade part is ensured, the structural strength of the blade part is enhanced, and the anti-tipping performance is better; the radius of the arc edge 6 is 0.48-0.52 mm, and the arc radian of the arc edge 6 is 90 degrees; the front angle formed by the contact of the front cutter face 10 of the circular arc edge and the workpiece is-5-0 degree, and the back angle formed by the contact of the back cutter face 11 of the circular arc edge and the workpiece is 0-4 degrees; aiming at the characteristic of high hardness of a stainless steel product, the front angle of the arc edge front cutter face 10 is set as a negative angle, so that the resistance is lower during feeding, and the feeding strength during processing is ensured; the structural strength of the blade part is enhanced while the sharp tip of the blade part of the arc blade 6 is ensured, the arc blade is protected, and the anti-tipping performance of the arc blade 6 is better.
Referring to fig. 4, in the four-blade round nose milling cutter for stainless steel processing of the embodiment of the present invention, the end blade front cutter face 7 intersects with the adjacent end blade second rear cutter face 9 to form a tooth gap, an included angle a between the bottom end of the tooth gap and the cutting end blade 5 is 40 to 45 degrees, and the tooth gap is communicated with the spiral chip removal groove 4 to remove chips in time; the included angle b between the cutting end edge 5 and the axis of the cutter main body is 87-89 degrees, the cutting end edge 5 is in a concave state, the feeding from the arc edge 6 is realized, the feeding resistance is small, and the edge breakage is not easy to happen.
Preferably, the wall surface of the spiral cutting edge 3 opposite to the direction of rotation of the spiral flute 4 toward the tool body forms a cutting edge flank 12, and a clearance angle formed by the cutting edge flank 12 contacting the workpiece is 10 ° to 16 °.
Preferably, the outer surface of the cutting part 2 is provided with a reinforced coating, and the reinforced coating sequentially comprises a wear-resistant layer and an oxidation-resistant layer from inside to outside, so that the wear resistance and the corrosion resistance of the cutting edge are enhanced.
Preferably, the material of the cutter main body is Co content more than 8% and bending strength more than 3600N/mm2The hard alloy bar stock.
In summary, the four-edged round nose milling cutter for stainless steel processing according to the embodiment of the present invention has the front cutter face and the rear cutter face arranged on the arc edge 6 and the cutting end edge 5 of the cutter head, so as to enhance the structural strength of the cutting edge while ensuring the sharpness of the cutting edge; the arc blade 6 is protected during feeding, so that the arc blade 6 has better anti-tipping performance and longer service life; the strengthening coating of the cutting part 2 enhances the wear resistance of the cutting edge and thus prolongs the service life.
Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A four-edge round nose milling cutter for stainless steel processing is characterized by comprising a cutter body, wherein one end of the cutter body is a cutting part, the other end of the cutter body is a handle part for installing a cutter handle, the cutting part is provided with four spiral cutting edges, spiral chip grooves are formed between every two adjacent spiral cutting edges, the front end of the cutting part is provided with four cutting end edges, and the cutting end edges and the spiral cutting edges are connected in a one-to-one correspondence mode through arc edges; the cutting end blade and the wall surface of the spiral chip groove facing to the rotation direction of the cutter body form an end blade front cutter surface, and the cutting end blade and the wall surface of the spiral chip groove facing to the opposite rotation direction of the cutter body form an end blade first rear cutter surface and an end blade second rear cutter surface in sequence; the arc blade forms an arc blade front blade surface connected with the end blade front blade surface, and the arc blade forms an arc blade rear blade surface.
2. A four-edged round nose milling cutter for stainless steel working according to claim 1, wherein the helical cutting edges and the helical flutes are symmetrically distributed about the axial center of the cutter body, and the cutting end edges are symmetrically distributed about the axial center of the cutter body, the cutting end edges being converged at a cutting portion tip end axial center.
3. A four-edged round nose milling cutter for stainless steel working according to claim 1, wherein the front angle formed by the end-edge rake face contacting the workpiece is 0 ° to 4 °, the first back angle formed by the end-edge first flank face contacting the workpiece is 5 ° to 10 °, and the second back angle formed by the end-edge second flank face contacting the workpiece is 15 ° to 20 °.
4. A four-edged round nose milling cutter for stainless steel working according to claim 1, wherein the radius of the circular-arc edge is 0.48 to 0.52mm, and the circular-arc radian of the circular-arc edge is 90 °; the front angle formed by the contact of the front cutter face of the circular arc edge and the workpiece is-5-0 degrees, and the back angle formed by the contact of the back cutter face of the circular arc edge and the workpiece is 0-4 degrees.
5. A four-edged round nose milling cutter for stainless steel working according to claim 1, wherein the end-edge rake face intersects with the adjacent end-edge second flank face to form a tooth space, and the bottom end of the tooth space forms an angle of 40 ° to 45 ° with the cutting end edge.
6. A four-edged round nose milling cutter for stainless steel machining as set forth in claim 1, wherein the cutting end edge forms an angle of 87 ° to 89 ° with the axis of the cutter body.
7. A four-edged round nose milling cutter for stainless steel machining according to claim 1, wherein the wall surfaces of the helical cutting edges and the helical flutes opposite to the direction of rotation of the cutter body form cutting edge flank surfaces which contact the workpiece with a clearance angle of 10 ° to 16 °.
8. A four-edged round nose milling cutter for stainless steel working according to claim 1, wherein the cutting portion is provided on its outer surface with a strengthening coating comprising, in order from the inside to the outside, a wear-resistant layer and an oxidation-resistant layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120098102.7U CN214769211U (en) | 2021-01-14 | 2021-01-14 | Four-edge round nose milling cutter for stainless steel processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120098102.7U CN214769211U (en) | 2021-01-14 | 2021-01-14 | Four-edge round nose milling cutter for stainless steel processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214769211U true CN214769211U (en) | 2021-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120098102.7U Active CN214769211U (en) | 2021-01-14 | 2021-01-14 | Four-edge round nose milling cutter for stainless steel processing |
Country Status (1)
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|---|---|
| CN (1) | CN214769211U (en) |
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2021
- 2021-01-14 CN CN202120098102.7U patent/CN214769211U/en active Active
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