CN220782372U - Four-edge ball end milling cutter - Google Patents
Four-edge ball end milling cutter Download PDFInfo
- Publication number
- CN220782372U CN220782372U CN202322245785.6U CN202322245785U CN220782372U CN 220782372 U CN220782372 U CN 220782372U CN 202322245785 U CN202322245785 U CN 202322245785U CN 220782372 U CN220782372 U CN 220782372U
- Authority
- CN
- China
- Prior art keywords
- edge
- main
- cutting edge
- cutting
- minor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000003801 milling Methods 0.000 title claims abstract description 16
- 230000007704 transition Effects 0.000 claims abstract description 51
- 230000002093 peripheral effect Effects 0.000 claims abstract description 20
- 238000004891 communication Methods 0.000 claims description 2
- 238000003754 machining Methods 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Landscapes
- Milling Processes (AREA)
Abstract
The utility model discloses a four-edge ball-end milling cutter, which comprises a cutter handle and a cutter head positioned at one end of the cutter handle, wherein the cutter handle is a clamping part, the cutter head is a cutting part, four spiral peripheral edges are uniformly distributed on the circumferential side of the cutter head, a peripheral side chip groove is formed between any two peripheral edges, a first main cutting edge, a second main cutting edge, a first auxiliary cutting edge and a second auxiliary cutting edge are arranged at the top end of the cutter head, the first main cutting edge and the second main cutting edge are diagonally arranged, a main edge transition supporting part is arranged at the junction of the middle parts of the first main cutting edge and the second main cutting edge, a first main edge cutting auxiliary edge is formed on the inner side of the first main cutting edge through the center of a circle, and a second main edge cutting auxiliary edge is formed on the inner side of the second main cutting edge through the center of a circle; the utility model prolongs the service life of the cutter, improves the machining precision of the cutter and ensures that the chip removal is smoother.
Description
Technical Field
The utility model relates to the technical field of ball end mills, in particular to a four-edge ball end mill.
Background
The ball end milling cutter is a cutter for milling, and the cutting edge of the cutter is similar to a ball end, is mainly used for processing various curved surfaces and arc grooves, and is widely applied to precision machining in the mechanical manufacturing industry. The ball end mill can be divided into a double-edge ball end mill, a three-edge ball end mill and a four-edge ball end mill according to the number of edges of the ball end mill. The double-edge ball end milling cutter has the characteristics of higher cutting efficiency and smaller cutting force; the three-blade ball end mill has the characteristics of higher cutting precision, relatively longer cutting edge and smaller cutting force; the four-edge ball end mill has higher cutting precision and better rigidity than the two, and also has the characteristic of relatively longer cutting edge, and is mainly used for processing parts with higher requirements.
However, since the four-edge ball-end mill has a large number of edges for simultaneous cutting, the cutting force is relatively large, the volume of a single cutting edge (the rear support of the edge) is relatively small, and the cutting edge is extremely easy to wear and collapse at the junction of the cutting edges, thereby seriously affecting the machining efficiency and the service life of the cutter. For example, in the conventional four-edge ball cutter with the patent application number of 202021721124.6, the centers of the cutting edges are concentrated at a vertex, and when the cutting is performed, the supporting parts at the left and right ends of the vertex are smaller, so that the phenomenon of cutter breakage is very easy to occur, and since the number of the cutting edges of the ball end mill is inversely proportional to the cross-sectional area of the chip pocket, when the four-edge ball cutter is used for cutting, the cutting chips are not smoothly discharged, and blockage is easy to be caused, so that the milling cutter is broken, and the cutting requirements cannot be better met.
Further, the conventional ball nose milling cutter chisel edge is in a standard inclined line shape, and as shown in fig. 1, the top point A of the cutter is in a small platform shape when seen from the side, so that a concave small plane appears at the bottom of a machined part groove, and the precision of the part is reduced.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides the four-edge ball-end milling cutter, wherein the first main cutting edge and the second main cutting edge form a coherent S-shaped cutting edge through the arrangement of the main edge transition supporting part, so that a machined piece can be better milled into an arc-shaped groove, and the main edge transition supporting part has a certain width, has higher strength, can reduce the occurrence of the phenomena of cutter breakage and abnormal abrasion, and prolongs the service life of a cutter; meanwhile, the design of adopting the four-blade structure in the technical scheme can not only give consideration to machining precision, but also reduce the cutting force of the cutter and slow down the abrasion of the cutter.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the utility model provides a four-edge ball end mill, includes the handle and is located the tool bit of handle one end, the handle is the clamping part, the tool bit is cutting part, the circumference side equipartition of tool bit is provided with four heliciform week edges, is formed with week side chip groove between two arbitrary week edges, the top of tool bit is provided with first main cutting edge, second main cutting edge, first minor cutting edge and second minor cutting edge, first main cutting edge with the second main cutting edge is the diagonal setting, just first main cutting edge with the intersection at second main cutting edge middle part is provided with main cutting edge transition supporting part, the inboard of first main cutting edge is passed the centre of a circle and is formed with first main cutting edge cutting minor edge, the inboard of second main cutting edge is passed the centre of a circle and is formed with second main cutting minor edge, first main cutting minor edge and second main cutting minor edge cutting edge form the cutting edge of the centre of a circle position at main cutting edge transition supporting part, accomplish the cutting at machined part center (centre of a circle).
The first minor cutting edge and the second minor cutting edge are also arranged diagonally, a first major cutting edge cutting minor edge chip groove is formed in the inner side of the first minor cutting edge, a second major cutting minor edge chip groove is formed in the inner side of the second minor cutting edge, and the first major cutting minor edge chip groove and the second major cutting minor edge chip groove are arranged so that chip removal of the first major cutting minor edge and the second major cutting minor edge can be facilitated, and a concave space is formed so that the first major cutting minor edge and the second major cutting minor edge can be arranged and ground to be formed.
The outsides of the first main cutting edge, the second main cutting edge, the first auxiliary cutting edge and the second auxiliary cutting edge are respectively connected with the peripheral edge.
Preferably, the rake angles of the first main cutting edge, the second main cutting edge, the first auxiliary cutting edge and the second auxiliary cutting edge are 0.2-0.5mm higher than the relief angle, and the relief angles of the first main cutting edge and the second main cutting edge are respectively provided with a first main edge supporting transition part and a second main edge supporting transition part in sequence, and the second main edge supporting transition parts are communicated with the peripheral chip removal groove.
Further, the first main blade supporting transition portion and the second main blade supporting transition portion are all inclined and arranged, and the inclination angles are sequentially increased.
Further, the rear corners of the first auxiliary cutting edge and the second auxiliary cutting edge are respectively provided with a first auxiliary edge supporting transition part and a second auxiliary edge supporting transition part in sequence, and the second auxiliary edge supporting transition part is communicated with the peripheral chip groove.
Further, the first auxiliary blade supporting transition portion and the second auxiliary blade supporting transition portion are both inclined and arranged, and the inclination angles are sequentially increased.
Further, the top end of the cutter head is also provided with a blade avoiding groove, and the blade avoiding groove is positioned at the front corner of the blade corresponding to the blade avoiding groove.
Further, the first main blade cutting auxiliary blade chip groove and the second main blade cutting auxiliary blade chip groove are both communicated with a first main blade supporting transition part and a second main blade supporting transition part.
Further, both ends of the first main blade cutting auxiliary blade chip groove and the second main blade cutting auxiliary blade chip groove are communicated with the blade avoiding groove, so that chips can be discharged from both ends of the first main blade cutting auxiliary blade chip groove and the second main blade cutting auxiliary blade chip groove, and chip removal is smoother.
The beneficial effects of the utility model are as follows: (1) Through the arrangement of the main edge transition supporting part, the first main cutting edge and the second main cutting edge form a coherent S-shaped cutting edge, a machined piece can be better milled into an arc-shaped groove, the main edge transition supporting part has a certain width, the strength is high, the occurrence of the phenomena of cutter breakage and abnormal abrasion can be reduced, and the service life of a cutter is prolonged; (2) By arranging the first auxiliary cutting edge and the second auxiliary cutting edge, the first main cutting edge and the second main cutting edge form complementary cutting, and the cutting is more symmetrical and finer, so that the machining precision is improved; (3) By arranging the first main blade cutting auxiliary blade chip groove and the second main blade cutting auxiliary blade chip groove, the cutting surfaces of the first auxiliary cutting blade, the second auxiliary cutting blade and the workpiece are reduced, and therefore the cutting force of the cutter is reduced; simultaneously, the two ends of the chip groove of the first main blade cutting auxiliary blade and the two ends of the chip groove of the second main blade cutting auxiliary blade are also communicated with the blade avoiding groove, and chip removing channels at the front end and the rear end are formed, so that chip removing is smoother.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a prior art tool side;
FIG. 2 is a schematic diagram of the structure of the present utility model;
FIG. 3 is a schematic view of the end face of the tool bit according to the present utility model;
FIG. 4 is a schematic view of the structure of four cutting edges according to the present utility model;
fig. 5 is a schematic view of the structure of the difference between the height of the front angle and the height of the rear angle in the present utility model.
In the figure, 100, a shank, 200, a tool bit, 201, a peripheral edge, 202, a peripheral side chip groove, 203, a first major cutting edge, 204, a second major cutting edge, 205, a first minor cutting edge, 206, a second minor cutting edge, 207, a main edge transition support portion, 208, a first main edge cutting sub-edge, 209, a second main edge cutting sub-edge, 210, a first main edge cutting sub-edge chip groove, 211, a second main edge cutting sub-edge chip groove, 212, a first main edge support transition portion, 213, a second main edge support transition portion, 214, a first sub-edge support transition portion, 215, a second sub-edge support transition portion, 216, an edge relief groove, 217, a rake angle, 218, and a relief angle.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 2 to 5, a four-edge ball nose milling cutter includes a shank 100 and a cutter head 200 located at one end of the shank 100, the shank 100 is a clamping part, the cutter head 200 is a cutting part, four helical peripheral edges 201 are uniformly distributed on the peripheral side of the cutter head 200, a peripheral chip groove 202 is formed between any two peripheral edges 201, a first main cutting edge 203, a second main cutting edge 204, a first minor cutting edge 205 and a second minor cutting edge 206 are disposed at the top end of the cutter head 200, the first main cutting edge 203 and the second main cutting edge 204 are diagonally disposed, a main edge transition supporting part 207 is disposed at the intersection of the first main cutting edge 203 and the middle part of the second main cutting edge 204, a first main cutting edge cutting minor edge 208 is formed by the inner side of the first main cutting edge 203 penetrating through the center of the circle, a second main cutting minor edge 209 is formed by the inner side of the second main cutting edge 204, and the first main cutting minor edge 208 and the second main cutting minor edge 209 form the cutting minor edge (center) of the center of the cutting workpiece where the main transition supporting part 207 is located.
Referring to fig. 3 and 5, the first minor cutting edge 205 and the second minor cutting edge 206 are also diagonally arranged, and a first major cutting minor edge chip groove 210 is provided on the inner side of the first minor cutting edge 205, a second major cutting minor edge chip groove 211 is provided on the inner side of the second minor cutting edge 206, and the arrangement of the first major cutting minor edge chip groove 210 and the second major cutting minor edge chip groove 211 not only facilitates chip removal of the first major cutting minor edge 208 and the second major cutting minor edge 209, but also forms a concave space, thereby facilitating arrangement and grinding molding of the first major cutting minor edge 208 and the second major cutting minor edge 209.
The outer sides of the first main cutting edge 203, the second main cutting edge 204, the first minor cutting edge 205 and the second minor cutting edge 206 are respectively connected to the peripheral edge 201, which is more convenient for cutting a workpiece.
Referring to fig. 2 to 5, the rake angles 217 of the first main cutting edge 203, the second main cutting edge 204, the first minor cutting edge 205, and the second minor cutting edge 206 are 0.2 to 0.5mm higher than the relief angle 218, and the first main cutting edge 203 and the second main cutting edge 204 are each provided with a first main edge support transition portion 212 and a second main edge support transition portion 213 in sequence at the relief angle 218, the second main edge support transition portion 213 communicates with the peripheral side chip groove 202, and the first main edge support transition portion 212 and the second main edge support transition portion 213 are each provided in an inclined surface shape, and the inclination angles are sequentially increased. The first main blade supporting transition portion 212 and the second main blade supporting transition portion 213 not only function as supporting blades, but also form a continuous inclined slope, facilitating smooth discharge of chips.
The first minor cutting edge 205 and the second minor cutting edge 206 are provided with a first minor edge supporting transition portion 214 and a second minor edge supporting transition portion 215 in sequence at the rear corners 218, the second minor edge supporting transition portion 215 is communicated with the peripheral side chip groove 202, the first minor edge supporting transition portion 214 and the second minor edge supporting transition portion 215 are provided in an inclined plane shape, and the inclination angles are increased in sequence. The first and second minor edge support transitions 214, 215 not only function to support the edge, but also form a continuous inclined slope to facilitate smooth discharge of chips.
The top end of the cutter head 200 is also provided with a blade avoiding groove 216, and the blade avoiding groove 216 is positioned at a front corner 217 of a blade corresponding to the blade avoiding groove.
The first main edge cutting secondary edge flute 210 and the second main edge cutting secondary edge flute 211 are both in communication with a first main edge support transition 212 and a second main edge support transition 213. Meanwhile, both ends of the first main-edge cutting auxiliary-edge chip groove 210 and the second main-edge cutting auxiliary-edge chip groove 211 are also communicated with the edge avoiding groove 216, so that chips can be discharged from both ends of the first main-edge cutting auxiliary-edge chip groove 210 and the second main-edge cutting auxiliary-edge chip groove 211, and also can be discharged from the first main-edge supporting transition portion 212, the second main-edge supporting transition portion 213 and the peripheral-side chip groove 202 in sequence, so that chip removal is smoother.
The utility model prolongs the service life of the cutter, improves the machining precision of the cutter and ensures that the chip removal is smoother.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (7)
1. The utility model provides a four-edge ball end mill, includes the handle and is located the tool bit of handle one end, the handle is clamping part, the tool bit is cutting part, the circumference side equipartition of tool bit is provided with four heliciform peripheral edges, is formed with the week side chip groove between arbitrary two peripheral edges, its characterized in that, the top of tool bit is provided with first main cutting edge, second main cutting edge, first minor cutting edge and second minor cutting edge, first main cutting edge and second main cutting edge are the diagonal setting, just first main cutting edge with the intersection in the middle part of the second main cutting edge is provided with main edge transition supporting part, the inboard of first main cutting edge is passed the centre of a circle and is formed with first main edge cutting minor edge, the inboard of second main cutting edge is passed the centre of a circle and is formed with second main edge cutting minor edge;
the first auxiliary cutting edge and the second auxiliary cutting edge are also arranged diagonally, a first main edge cutting auxiliary edge chip groove is formed in the inner side of the first auxiliary cutting edge, and a second main edge cutting auxiliary edge chip groove is formed in the inner side of the second auxiliary cutting edge;
the outsides of the first main cutting edge, the second main cutting edge, the first auxiliary cutting edge and the second auxiliary cutting edge are respectively connected with the peripheral edge.
2. The four-edge ball nose milling cutter of claim 1, wherein the rake angles of the first main cutting edge, the second main cutting edge, the first minor cutting edge and the second minor cutting edge are 0.2-0.5mm higher than the relief angle, and the relief angles of the first main cutting edge and the second main cutting edge are each provided with a first main edge supporting transition portion and a second main edge supporting transition portion in sequence, and the second main edge supporting transition portions are communicated with the peripheral chip grooves.
3. The four-bladed ball nose milling cutter of claim 2, wherein the first and second main-bladed support transitions are each beveled and the angle of inclination increases in sequence.
4. The four-edged ball nose milling cutter according to claim 1 or 2, wherein the rear corners of the first and second minor cutting edges are each provided with a first and second minor edge support transition portion in order, the second minor edge support transition portion communicating with the peripheral side chip groove.
5. The four-edged ball nose milling cutter according to claim 4, wherein the first and second secondary edge support transitions are each provided in a beveled shape with increasing inclination angles.
6. The four-bladed ball nose milling cutter according to claim 1, wherein the top end of the cutter head is further provided with a blade relief groove located at the rake angle of the blade corresponding thereto.
7. The four-bladed ball nose milling cutter of claim 6, wherein the blade relief grooves are in communication with both ends of the first and second main-bladed cutting secondary blade flutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322245785.6U CN220782372U (en) | 2023-08-21 | 2023-08-21 | Four-edge ball end milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322245785.6U CN220782372U (en) | 2023-08-21 | 2023-08-21 | Four-edge ball end milling cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220782372U true CN220782372U (en) | 2024-04-16 |
Family
ID=90636412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322245785.6U Active CN220782372U (en) | 2023-08-21 | 2023-08-21 | Four-edge ball end milling cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220782372U (en) |
-
2023
- 2023-08-21 CN CN202322245785.6U patent/CN220782372U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101521666B1 (en) | Cutting insert | |
| JP4971162B2 (en) | Turning tools, turning inserts for turning tools, and integrated turning tools | |
| US5460464A (en) | Cutting insert | |
| WO2010147157A1 (en) | Cutting insert and face milling cutter | |
| CN211135565U (en) | Indexable turning insert with integrated rough machining and finish machining | |
| CN220782372U (en) | Four-edge ball end milling cutter | |
| CN212384687U (en) | Ball-end milling cutter and ball-end double-edge milling cutter | |
| JP4830552B2 (en) | Face milling | |
| CN210702770U (en) | Milling cutter with end chip grooves | |
| CN111203554A (en) | Indexable turning insert with integrated rough machining and finish machining | |
| CN218425840U (en) | Square shoulder milling cutter blade and cutter | |
| CN216065722U (en) | Drum-shaped arc milling cutter | |
| CN114559081A (en) | Tapered end milling cutter with gradually-changed helical angle | |
| CN214640518U (en) | Plunge milling cutter | |
| CN210648706U (en) | Cutting tool and tool bit structure thereof | |
| CN210996740U (en) | Straight milling cutter for processing aluminum profile | |
| CN201120490Y (en) | HPC groove shaped butt mill | |
| CN2902531Y (en) | Turning cutter for roughing cut | |
| CN215090915U (en) | Large spiral angle type coating finish milling cutter | |
| CN215880158U (en) | double-R-angle cutting edge reamer for machining high-requirement holes | |
| CN216858364U (en) | Tapered end milling cutter with gradually-changed helical angle | |
| CN115582573B (en) | Ball end milling cutter capable of improving surface roughness of machined workpiece | |
| CN212419788U (en) | Taper milling cutter | |
| CN220880578U (en) | Turning tool piece | |
| CN218926342U (en) | Replaceable blade |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |