CN113399727A - Finish machining cutter for face milling - Google Patents
Finish machining cutter for face milling Download PDFInfo
- Publication number
- CN113399727A CN113399727A CN202110412419.8A CN202110412419A CN113399727A CN 113399727 A CN113399727 A CN 113399727A CN 202110412419 A CN202110412419 A CN 202110412419A CN 113399727 A CN113399727 A CN 113399727A
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- bottom end
- cutting edge
- fillet
- cutting
- face
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- 238000003801 milling Methods 0.000 title claims abstract description 23
- 238000003754 machining Methods 0.000 title claims abstract description 20
- 230000007704 transition Effects 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000009499 grossing Methods 0.000 claims description 5
- 229910000997 High-speed steel Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 17
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/10—Shank-type cutters, i.e. with an integral shaft
- B23C5/1081—Shank-type cutters, i.e. with an integral shaft with permanently fixed cutting inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2200/00—Details of milling cutting inserts
- B23C2200/08—Rake or top surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2200/00—Details of milling cutting inserts
- B23C2200/16—Supporting or bottom surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/04—Angles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
The invention discloses a finish machining cutter for face milling, which comprises a rod-shaped body; the rod-shaped body is divided into a cutting part and a handle part; in the cutting part, more than two chip removal grooves extend from the bottom end to the top end, the bottom end of the cutting part is provided with tooth gaps based on the chip removal grooves, the surface of the tooth gaps facing the cutting rotation direction is a bottom end cutting edge front cutter surface, the bottom end cutting edge front cutter surface is intersected with the bottom end surface of the cutting part to form a bottom end cutting edge, and the bottom end surface of the cutting part is a bottom end cutting edge rear cutter surface; the bottom end cutting edge and the circumference cutting edge are in transition by adopting a connecting fillet; the bottom cutting edge rake face is the arc surface of radius uniform change, and also for radius uniform change transition between the fillet rake face that bottom cutting edge rake face and handing-over fillet had. The invention can effectively improve the quality of the processed surface and increase the strength of the cutter under the working condition of high-speed and high-efficiency processing.
Description
Technical Field
The invention relates to the technical field of cutters, in particular to a finish machining cutter for face milling.
Background
Cutting tools are tools used in machining for cutting work, and since tools used in machining are basically used for cutting metal materials, such tools are metal cutting tools. At present in the metal cutting field, use fillet head end mill to carry out metal plane's finish machining usually, but along with the development in cutting field, pursue the more efficient processing mode of higher speed, promote cutter machining efficiency, adopt the increase depth of cut usually, improve cutting tool slew velocity, increase processing methods such as cutter number of teeth, but prior art's finish machining of face milling all has the problem in several directions that improve cutter machining efficiency, cutter vibration condition easily appears under the processing operating mode of big depth of cut, high rotational speed, make the processing surface quality be difficult to satisfy the requirement, and increase the cutter number of teeth and easily appear the problem that the chip removal is not smooth again. In addition, under high-speed high-efficient processing operating mode, the impact that the cutter bore also can increase thereupon, has also proposed higher requirement to the intensity of cutter, and this type of cutter fillet of prior art is the straight line behind its centre of a circle section usually, and such cutter very easily takes place the cutter fillet and breaks up and lack under high impact operating mode to influence cutter life-span and performance, and increase the processing cost, also can reduce simultaneously and process work piece quality.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a finish machining cutter for face milling, which can effectively improve the quality of a machined surface and increase the strength of the cutter under the working condition of high-speed and high-efficiency machining by optimizing the design of a cutting edge at the bottom end of the cutter and the cutter fillet.
The technical scheme adopted by the invention for solving the technical problems is as follows: a face milling finish machining cutter comprises a rod-shaped body; the rod-shaped body is divided into a cutting part and a handle part; the free end of the cutting part is set as a bottom end, and the free end of the handle part is set as a top end; the outer diameter of the cutting part is D; the cutting part is provided with more than two chip removal grooves spirally extending from the bottom end to the top end, the surface of each chip removal groove facing the cutting rotation direction is a front cutter surface, the front cutter surface and the outer peripheral surface of the cutting part are intersected to form a circumferential cutting edge, and the surface of the outer peripheral surface of the cutting part, which is connected with the cutting edge, is a rear cutter surface; the rear cutter surface extends from the bottom end of the cutting part to the handle part; the bottom end of the cutting part is provided with a tooth space based on a chip removal groove, the surface of the tooth space facing the cutting rotation direction is a bottom end cutting edge front cutter surface, the bottom end cutting edge front cutter surface is intersected with the bottom end surface of the cutting part to form a bottom end cutting edge, and the bottom end surface of the cutting part is a bottom end cutting edge rear cutter surface; the bottom end cutting edge and the circumferential cutting edge are in transition by adopting a cross fillet; the bottom cutting edge rake face is the arc surface of radius uniform change, and also for radius uniform change transition between the fillet rake face that bottom cutting edge rake face and handing-over fillet had.
The handing-over fillet has the back knife face, and the knife face divide into two sections behind the fillet, and the knife face is the knife face behind the first section fillet next to the handing-over fillet, and knife face is convex behind the first section fillet, the second section fillet.
The bottom end cutting edge is composed of two sections, namely a first section close to the axis of the rod-shaped body and a second section adjacent to the joint fillet.
The included angle between the first part of the bottom end cutting edge and a plane vertical to the axis of the rod-shaped body is theta 1, and theta 1 is more than 0 degree and less than or equal to 8 degrees; the included angle between the second part of the bottom end cutting edge and the plane vertical to the axis of the rod-shaped body is theta 2, and theta 2 is more than or equal to-1 degree and less than or equal to 1 degree.
And the second part of the bottom end cutting edge is designed into a wiper edge structure.
The length of the smoothing edge is a, and a is more than 0 and less than or equal to 0.2D.
The radius of the cross-connecting fillet is R, and R is more than 0 and less than or equal to 0.5D.
Among the more than two bottom end cutting edges, form the contained angle between two adjacent bottom end cutting edges, each contained angle is not equal completely.
The rod-shaped body is made of one or more materials of high-speed steel, hard alloy, CBN and PCD.
Compared with the prior art, the invention has the beneficial effects that:
1. the bottom end cutting edge rake face is designed into the arc face with the radius uniformly changed, and the radius between the bottom end cutting edge rake face and the fillet rake face of the connecting fillet is also uniformly changed and transited. According to the structure, the cutting edge at the bottom end of the cutter and the joint fillet of the cutter are in uniform transition, so that no sharp point appears at the joint position; can reduce the stress concentration between bottom cutting edge and the transition fillet, avoid it to appear processing and collapse the problem of losing.
2. The bottom end cutting edge is divided into two sections, namely a first part close to the axis of the rod-shaped body and a second part adjacent to the joint fillet, the included angle between the first part of the bottom end cutting edge and a plane vertical to the axis of the rod-shaped body is theta 1, and the theta 1 is more than 0 degree and less than or equal to 8 degrees; the included angle between the second part of the bottom end cutting edge and the plane perpendicular to the axis of the rod-shaped body is theta 2, theta 2 is larger than or equal to-1 degree and smaller than or equal to 1 degree, and the second part of the bottom end cutting edge is set to be a smoothing edge structure. The structure of the invention can improve the sharpness of the bottom end cutting edge, reduce the cutting force of the cutter during cutting and processing, simultaneously does not influence the processing strength of the cutter, enables the cutter to adapt to larger cutting depth and higher feeding amount, also reduces the cutter vibration risk, and ensures the processing stability; and the quality of the machined surface of the cutter can be effectively improved.
3. The invention divides the fillet rear cutter face of the connecting fillet into two sections, the first section of fillet rear cutter face is arranged close to the connecting fillet, the first section of fillet rear cutter face is a straight face, and the second section of fillet rear cutter face is an arc. The structure of the invention can ensure the sharpness of the transition fillet of the cutter, and improve the fillet strength of the cutter in a limited way, thereby preventing the fillet of the cutter from collapsing.
The invention is further explained in detail with the accompanying drawings and the embodiments; a face milling finishing tool of the present invention is not limited to the embodiments.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of the present invention;
FIG. 3 is a view from the direction A in FIG. 2;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;
FIG. 5 is a sectional view taken along line C-C of FIG. 3;
fig. 6 is an enlarged schematic view of a portion E in fig. 2.
In the figure: 10. a rod-shaped body; 1. a cutting portion; 2. a handle; 3. a chip groove; 4. a peripheral cutting edge rake face; 5. a circumferential cutting edge; 6. a circumferential cutting edge relief; 7. backlash; 8. a bottom end cutting edge rake face; 9. a bottom end cutting edge; 11. a bottom end cutting edge rear cutter face; 12. a fillet is jointed; 13. smoothing the edge; 14. a first section of rounded flank; 15. a second section of rounded rear cutter surface; 16. a rounded rake face; 17. a first portion of the bottom cutting edge.
Detailed Description
Examples
Referring to fig. 1 to 6, a face milling finishing tool of the present invention comprises a rod-shaped body 10; the rod-shaped body 10 is divided into a cutting part 1 and a handle part 2; the free end of the cutting part 1 is set as a bottom end, and the free end of the handle part 2 is set as a top end; the outer diameter of the cutting part 1 is D; in the cutting part 1, more than two chip grooves 3 are spirally extended from the bottom end to the top end, in this embodiment, the six-blade cutting tool is provided, and the number of the chip grooves 3 is six; the surface of the chip groove 3 facing the cutting rotation direction is a rake surface 4, the rake surface 4 intersects with the outer peripheral surface of the cutting part 1 to form a circumferential cutting edge 5, and the surface of the outer peripheral surface of the cutting part 1 contacting with the cutting edge 5 is a flank surface 6; the rear tool face 6 extends from the bottom end of the cutting part 1 to the handle part 2; the bottom end of the cutting part 1 is provided with a tooth space 7 based on the chip groove 3, the surface of the tooth space 7 facing the cutting rotation direction is a bottom end cutting edge rake surface 8, the bottom end cutting edge rake surface 8 is intersected with the bottom end face of the cutting part 1 to form a bottom end cutting edge 9, and the bottom end face of the cutting part 1 is a bottom end cutting edge rear rake surface 11; the bottom end cutting edge 9 and the circumferential cutting edge 6 are transited by adopting a connecting fillet 12; bottom cutting edge rake face 11 is the arc surface of radius uniform change, and also for the radius uniform change transition between the fillet rake face 16 that bottom cutting edge rake face 11 and handing-over fillet 12 have.
In this embodiment, as shown in fig. 4, the handover fillet 11 has a flank face, the flank face is divided into two sections, the flank face 14 is a first section fillet flank face next to the handover fillet, the first section fillet flank face 14 is a straight face, the second section fillet flank face 15 is an arc, and the arc radius is r.
In this embodiment, as shown in fig. 3, the bottom cutting edge 9 is composed of two sections, namely a first section 17 near the axis of the rod-shaped body and a second section 13 adjacent to the intersection fillet 11.
In this embodiment, as shown in fig. 6, an included angle between the first portion 17 of the bottom end cutting edge and a plane perpendicular to the axis of the rod-shaped body is θ 1, and θ 1 is greater than 0 ° and less than or equal to 8 °; if the included angle theta 1 is too large, the strength of the bottom end cutting edge is reduced, the impact generated by high-speed and high-efficiency machining cannot be adapted, and the problem of the breakage of the cutting edge of the bottom end cutting edge is easy to occur; the included angle between the second part 13 of the bottom end cutting edge and a plane vertical to the axis of the rod-shaped body is theta 2, and theta 2 is more than or equal to-1 degree and less than or equal to 1 degree; if the included angle theta 2 is too large or too small, uneven lines are generated on the processing surface of the cutter, so that the surface milling processing surface is uneven, and the quality of the processing surface is affected.
In this embodiment, the second portion 13 of the bottom end cutting edge is configured as a wiper edge.
In this embodiment, as shown in fig. 6, the length of the wiper edge 13 is a, and a is greater than 0 and less than or equal to 0.2D. If the length a is too large, the cutting force of the cutter is obviously increased, the surface quality of the cutter during cutting and machining is affected, the cutter and a workpiece are easy to vibrate during machining of thin plate parts, and the cutter or the parts may be scrapped in severe cases.
In this embodiment, as shown in fig. 6, the radius of the connecting fillet 12 is R, and R is greater than 0 and less than or equal to 0.5D.
In this embodiment, among the two or more bottom end cutting edges, an included angle is formed between two adjacent bottom end cutting edges, and each included angle is not completely equal; as shown in fig. 3, in the 6-edge milling cutter of the present embodiment, the included angles between two adjacent bottom end cutting edges 9 are α, β, and γ, respectively, and the included angles are 65 °, 60 °, and 55 °, respectively.
In this embodiment, the rod-shaped body 10 is made of one or more materials selected from high-speed steel, cemented carbide, CBN (cubic boron nitride) and PCD (polycrystalline diamond).
The invention relates to a finish machining tool for face milling, which adopts a mode that a bottom end cutting edge front tool face 11 is set to be an arc surface with a uniformly changed radius, and the radius between the bottom end cutting edge front tool face 11 and a fillet front tool face 16 of a joint fillet is also in uniform change transition. According to the structure, the cutting edge 9 at the bottom end of the cutter and the connecting round angle 12 of the cutter are in uniform transition, so that no sharp point appears at the connecting position; can reduce the stress concentration between bottom cutting edge 9 and transition fillet 11, avoid it to appear processing the problem of collapsing and decreasing.
The invention relates to a finish machining cutter for face milling, which adopts a mode that a bottom end cutting edge 9 is divided into two sections, namely a first section 17 close to the axis of a rod-shaped body and a second section 13 adjacent to a joint fillet, wherein an included angle between the first section 17 of the bottom end cutting edge and a plane vertical to the axis of the rod-shaped body is theta 1, and theta 1 is more than 0 degree and less than or equal to 8 degrees; the included angle between the second part 13 of the bottom end cutting edge and the plane perpendicular to the axis of the rod-shaped body is theta 2, theta 2 is more than or equal to-1 degree and less than or equal to 1 degree, and the second part 13 of the bottom end cutting edge is set to be a smoothing edge structure. The structure of the invention can improve the sharpness of the bottom end cutting edge 9, reduce the cutting force of the cutter during cutting and processing, simultaneously does not influence the processing strength of the cutter, enables the cutter to adapt to larger cutting depth and higher feed amount, also reduces the cutter vibration risk, and ensures the processing stability; and the quality of the machined surface of the cutter can be effectively improved.
The invention relates to a finish machining tool for face milling, which is characterized in that a fillet rear tool face of a connecting fillet 12 is divided into two sections, a first section fillet rear tool face 14 is arranged close to the connecting fillet, the first section fillet rear tool face 14 is a straight face, and a second section fillet rear tool face 15 is an arc. The structure of the invention can ensure the sharpness of the transition fillet of the cutter, and improve the fillet strength of the cutter in a limited way, thereby preventing the fillet of the cutter from collapsing.
The foregoing is considered as illustrative of the preferred embodiments of the invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or equivalent modifications, without departing from the scope of the disclosed embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (9)
1. A face milling finish machining cutter comprises a rod-shaped body; the rod-shaped body is divided into a cutting part and a handle part; the free end of the cutting part is set as a bottom end, and the free end of the handle part is set as a top end; the outer diameter of the cutting part is D; the cutting part is provided with more than two chip removal grooves spirally extending from the bottom end to the top end, the surface of each chip removal groove facing the cutting rotation direction is a front cutter surface, the front cutter surface and the outer peripheral surface of the cutting part are intersected to form a circumferential cutting edge, and the surface of the outer peripheral surface of the cutting part, which is connected with the cutting edge, is a rear cutter surface; the rear cutter surface extends from the bottom end of the cutting part to the handle part; the bottom end of the cutting part is provided with a tooth space based on a chip removal groove, the surface of the tooth space facing the cutting rotation direction is a bottom end cutting edge front cutter surface, the bottom end cutting edge front cutter surface is intersected with the bottom end surface of the cutting part to form a bottom end cutting edge, and the bottom end surface of the cutting part is a bottom end cutting edge rear cutter surface; the method is characterized in that: the bottom end cutting edge and the circumferential cutting edge are in transition by adopting a cross fillet; the bottom cutting edge rake face is the arc surface of radius uniform change, and also for radius uniform change transition between the fillet rake face that bottom cutting edge rake face and handing-over fillet had.
2. The face milling finishing tool of claim 1, wherein: the handing-over fillet has the back knife face, and the knife face divide into two sections behind the fillet, and the knife face is the knife face behind the first section fillet next to the handing-over fillet, and knife face is convex behind the first section fillet, the second section fillet.
3. The face milling finishing tool of claim 1, wherein: the bottom end cutting edge is composed of two sections, namely a first section close to the axis of the rod-shaped body and a second section adjacent to the joint fillet.
4. The face milling finishing tool of claim 3, wherein: the included angle between the first part of the bottom end cutting edge and a plane vertical to the axis of the rod-shaped body is theta 1, and theta 1 is more than 0 degree and less than or equal to 8 degrees; the included angle between the second part of the bottom end cutting edge and the plane vertical to the axis of the rod-shaped body is theta 2, and theta 2 is more than or equal to-1 degree and less than or equal to 1 degree.
5. The face milling finishing tool of claim 3 or 4, wherein: and the second part of the bottom end cutting edge is designed into a wiper edge structure.
6. The face milling finishing tool of claim 5, wherein: the length of the smoothing edge is a, and a is more than 0 and less than or equal to 0.2D.
7. The face milling finishing tool of claim 2, wherein: the radius of the cross-connecting fillet is R, and R is more than 0 and less than or equal to 0.5D.
8. The face milling finishing tool of claim 3, wherein: among the more than two bottom end cutting edges, form the contained angle between two adjacent bottom end cutting edges, each contained angle is not equal completely.
9. The face milling finishing tool of claim 1, wherein: the rod-shaped body is made of one or more materials of high-speed steel, hard alloy, CBN and PCD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110412419.8A CN113399727A (en) | 2021-04-16 | 2021-04-16 | Finish machining cutter for face milling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110412419.8A CN113399727A (en) | 2021-04-16 | 2021-04-16 | Finish machining cutter for face milling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113399727A true CN113399727A (en) | 2021-09-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110412419.8A Pending CN113399727A (en) | 2021-04-16 | 2021-04-16 | Finish machining cutter for face milling |
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| Country | Link |
|---|---|
| CN (1) | CN113399727A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114728355A (en) * | 2019-10-02 | 2022-07-08 | 普罗费雷特两合公司 | Method and device for smoothing the tooth flanks of teeth of a toothed workpiece and tool for carrying out the method |
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| CN1475322A (en) * | 2002-03-25 | 2004-02-18 | �����ɷ� | Radial end milling cutter with reinforced radial edge capable of preventing scrap and breaking |
| CN104259540A (en) * | 2014-09-11 | 2015-01-07 | 株洲钻石切削刀具股份有限公司 | Flat-end milling cutter |
| EP2848342A1 (en) * | 2013-09-13 | 2015-03-18 | Fraisa SA | Solid milling tool for machining rotating materials |
| CN205629492U (en) * | 2016-03-28 | 2016-10-12 | 广州骏杰精密刀具有限公司 | Take sleeking sword milling cutter |
| CN106794526A (en) * | 2014-10-07 | 2017-05-31 | 三菱综合材料株式会社 | Radius end mill |
| CN107984010A (en) * | 2017-11-10 | 2018-05-04 | 株洲钻石切削刀具股份有限公司 | A kind of corner-rounding end milling cutter |
-
2021
- 2021-04-16 CN CN202110412419.8A patent/CN113399727A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1475322A (en) * | 2002-03-25 | 2004-02-18 | �����ɷ� | Radial end milling cutter with reinforced radial edge capable of preventing scrap and breaking |
| EP2848342A1 (en) * | 2013-09-13 | 2015-03-18 | Fraisa SA | Solid milling tool for machining rotating materials |
| CN104259540A (en) * | 2014-09-11 | 2015-01-07 | 株洲钻石切削刀具股份有限公司 | Flat-end milling cutter |
| CN106794526A (en) * | 2014-10-07 | 2017-05-31 | 三菱综合材料株式会社 | Radius end mill |
| CN205629492U (en) * | 2016-03-28 | 2016-10-12 | 广州骏杰精密刀具有限公司 | Take sleeking sword milling cutter |
| CN107984010A (en) * | 2017-11-10 | 2018-05-04 | 株洲钻石切削刀具股份有限公司 | A kind of corner-rounding end milling cutter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114728355A (en) * | 2019-10-02 | 2022-07-08 | 普罗费雷特两合公司 | Method and device for smoothing the tooth flanks of teeth of a toothed workpiece and tool for carrying out the method |
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Application publication date: 20210917 |
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