CN222856819U - Multi-edge ball end milling cutter - Google Patents
Multi-edge ball end milling cutter Download PDFInfo
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- CN222856819U CN222856819U CN202421416498.5U CN202421416498U CN222856819U CN 222856819 U CN222856819 U CN 222856819U CN 202421416498 U CN202421416498 U CN 202421416498U CN 222856819 U CN222856819 U CN 222856819U
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Abstract
本申请涉及一种多刃球头铣刀，其包括刀柄、切削部、第一切削刃及第二切削刃，所述第一切削刃沿切削部的圆弧设置且经过切削部的顶端，所述第一切削刃的两个端部分别设置于切削部与刀柄的连接处，所述第二切削刃围绕刀柄的轴线周向设置，所述第二切削刃一端靠近切削部与刀柄的连接处设置，所述第二切削刃的另一端与切削部的端部之间留有间隙。通过设置第一切削刃与切削部的顶端处，而第二切削刃仅围绕切削部设置且在第二切削刃与切削部的顶端之间设置间隙，从减少了位于切削部的顶端的用于切削的刀刃的数量，使排屑槽的尺寸不易减小，从而使排屑的过程更加方便，减少了切屑对加工精度的影响。
The present application relates to a multi-blade ball end milling cutter, which includes a shank, a cutting part, a first cutting edge and a second cutting edge, wherein the first cutting edge is arranged along the arc of the cutting part and passes through the top of the cutting part, the two ends of the first cutting edge are respectively arranged at the connection between the cutting part and the shank, the second cutting edge is arranged circumferentially around the axis of the shank, one end of the second cutting edge is arranged close to the connection between the cutting part and the shank, and a gap is left between the other end of the second cutting edge and the end of the cutting part. By arranging the first cutting edge at the top of the cutting part, and the second cutting edge is only arranged around the cutting part and a gap is arranged between the second cutting edge and the top of the cutting part, the number of cutting edges for cutting at the top of the cutting part is reduced, and the size of the chip removal groove is not easy to reduce, thereby making the chip removal process more convenient and reducing the influence of chips on machining accuracy.
Description
Technical Field
The application relates to the technical field of milling cutters, in particular to a multi-edge ball end milling cutter.
Background
The ball end mill is widely applied to the processing of key parts in the industries of aerospace, automobiles, ships and the like. Meanwhile, the key parts mainly adopt difficult-to-process materials such as titanium alloy, high-temperature alloy, high-strength steel and the like with the characteristics of high strength, low density, high hot hardness and the like, and the abrasion of cutting edges of the milling cutter is increased when the difficult-to-process materials are processed, so that in order to prolong the processing life of the milling cutter, a method for increasing the number of the cutting edges is generally adopted to prolong the service life of the cutter.
However, the number of cutting edges increases, which results in a decrease in the size of the chip groove between adjacent cutting edges, which affects the discharge of chips, and it is difficult to secure the machining accuracy of the workpiece after chips are accumulated in the chip groove.
It is therefore necessary to propose a new solution to the above-mentioned problems.
Disclosure of utility model
In order to facilitate the discharge of chips and reduce the influence of the chips on machining precision, the application provides a multi-edge ball nose milling cutter.
The application provides a multi-edge ball end mill, which adopts the following technical scheme:
the utility model provides a multi-blade ball end milling cutter, includes the handle of a knife, sets up in the handle of a knife tip be the cutting portion of ball, sets up a plurality of first cutting edges on the cutting portion and sets up and a plurality of second cutting edges on the cutting portion, first cutting edge sets up along the circular arc of cutting portion and the top of cutting portion, two tip of first cutting edge set up respectively in the junction of cutting portion and handle of a knife, the second cutting edge sets up around the axis circumference of handle of a knife, second cutting edge one end is close to the junction setting of cutting portion and handle of a knife, leave the clearance between the other end of second cutting edge and the tip of cutting portion, adjacent be provided with the chip groove between the second cutting edge, the both sides of first cutting edge also are provided with the chip groove, chip groove coincidence between first cutting edge and the second cutting edge.
Through adopting above-mentioned technical scheme, through setting up the top department of first cutting edge and cutting portion, and the second cutting edge just sets up the clearance around cutting portion setting and set up between the top of second cutting edge and cutting portion, from the quantity that has reduced the cutting edge that is used for cutting that is located the top of cutting portion, makes the size of chip groove be difficult for reducing to make the process of chip removal more convenient, reduced the influence of chip to machining precision.
Optionally, the first cutting edge comprises two first parts, the first parts are arranged on two sides of the axis of the cutter handle, the middle parts of the first parts face to the cutting direction of the milling cutter to deviate, and the two first parts are symmetrically arranged around the axis of the cutter handle.
By adopting the technical scheme, when the comfortable cutting edge rotates and mills, the chip can move along the chip groove towards the direction away from the axis of the cutting part, so that the chip is easier to discharge along the chip groove.
Optionally, the end of the second cutting edge near the end of the cutting portion is offset toward the cutting direction of the milling cutter.
By adopting the technical scheme, when the second cutting edge mills the workpiece, the generated chips can enter the chip groove and move along the chip groove towards the direction of the tool handle, so that the chips are not easy to directly contact with the machined surface when being separated, and the machining precision is not easy to influence.
Optionally, the offset amplitude of the first cutting edge is equal to the offset amplitude of the first cutting edge, and the profile extension line of the second cutting edge passes through the top end of the cutting part.
By adopting the technical scheme, the parts of the first cutting edge and the second cutting edge, which are positioned at the cutting part and far away from the axis of the cutting part, can always keep contact with the first cutting edge or the second cutting edge when the workpiece is cut, so that the first cutting edge or the second cutting edge can not directly impact the workpiece during milling, and the processing process of the workpiece is not easy to influence.
Optionally, a relief groove is formed in one end, far away from the cutter handle, of the cutting part, the relief grooves are respectively formed in two sides of the first cutting edge, and the relief grooves are communicated with chip removal grooves formed in two sides of the first cutting edge.
Through adopting above-mentioned technical scheme, further increased the space between the top of cutting portion and the work piece, made the chip can move towards the chip groove in the groove of stepping down to discharge in the follow chip groove, made the chip be difficult for producing the influence to the precision on the surface of work piece.
Optionally, the relief groove is arranged in a hemispherical shape, the axis of the relief groove coincides with the axis of the tool handle, and a gap is reserved between the relief groove and the end part of the second cutting edge, which is close to the cutting part.
Through adopting above-mentioned technical scheme, make the joint strength between second cutting edge and the cutting portion be difficult for receiving the influence, the tip that the tip can last atress that the shank was kept away from to the in-process second cutting edge at the cutting simultaneously makes the second cutting edge can be stable be fixed in on the cutting portion.
Optionally, the part of the first cutting edge close to the top end of the cutting part is perpendicular to the axis of the cutting part, and the distance between the horizontal position of the first cutting edge and the cutter handle is larger than the distance between the end of the second cutting edge, which is far away from the cutter handle, and the cutter handle.
By adopting the technical scheme, the second cutting edge firstly mills the workpiece in the milling process, then the first cutting edge mills the workpiece, and the feeding depth of the second cutting edge is larger than that of the first cutting edge, so that the pressure born by the first cutting edge is reduced, the first cutting edge is not easy to damage, and meanwhile, the first cutting edge is also utilized to finish the workpiece.
Optionally, the spacing between adjacent second cutting edges increases progressively with distance from the end of the cutting portion.
Through adopting above-mentioned technical scheme, through having increased the width of chip groove, make the chip that is located in the chip groove more easily follow the chip groove and discharge, reduce the influence of chip to the machining precision of work piece.
In summary, the present application includes at least one of the following beneficial technical effects:
1. The feeding depth of the second cutting edge is increased, and the feeding depth of the first cutting edge is reduced, so that the pressure born by the first cutting edge is reduced, the first cutting edge is not easy to wear, and meanwhile, the first cutting edge can be subjected to certain finish machining after the second cutting edge is machined;
2. along with gradually increasing the width of the chip groove away from the top end of the cutting part, the chips are more easily discharged along the chip groove, and the chips are not easily influenced on the machining high precision of the workpiece.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present application;
Fig. 2 is an enlarged view of a portion a in fig. 1.
In the figure, 1, a cutter handle, 2, a first cutting edge, 21, a first part, 3, a second cutting edge, 4, a cutting part, 41, a relief groove and 5, a chip removal groove.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings.
The application discloses a multi-edge ball-end milling cutter, which comprises a cutter handle 1, a cutting part 4 which is arranged at the end part of the cutter handle 1 and takes the shape of a ball, a plurality of first cutting edges 2 arranged on the cutting part 4 and a plurality of second cutting edges 3 arranged on the cutter handle 1, as shown in fig. 1 and 2. The axis of the cutting part 4 coincides with the axis of the tool shank 1, one end of the cutting part 4 far away from the tool shank 1 is arranged in a ball head mode, and the diameter of one end of the cutting part 4 close to the tool shank 1 is the same as the diameter of the tool shank 1. The first cutting edge 2 is arranged along an arc line of the cutting part 4, and the first cutting edge 2 passes through the top end of the cutting part 4 far away from the tool shank 1, and two ends of the first cutting edge 2 are respectively arranged at the connecting positions of the cutting part 4 and the cutting edge. The second cutting edge 3 is arranged around the axis around the cutting part 4, one end of the second cutting edge 3 is arranged at the joint of the cutting part 4 and the tool shank 1, the other end of the second cutting edge 3 is close to the end of the cutting part 4 far away from the tool shank 1, and a gap is reserved between the second cutting edge 3 and the end of the cutting part 4 far away from the tool shank 1. Chip grooves 5 are formed in the cutting portion 4 on both sides of the first cutting edge 2, chip grooves 5 are formed between adjacent second cutting edges 3 in the chip portion, and chip grooves 5 between the first cutting edge 2 and the second cutting edges 3 coincide. In the cutting process, a workpiece is firstly machined by the second cutting edge 3 from the side surface, then the first cutting edge 2 is used for assisting in machining, and only one first cutting edge 2 is arranged at the end part of the cutting part 4, so that the space for chip removal is larger, and the influence of chips on milling is reduced.
The first cutting edge 2 comprises two first portions 21, the two first portions 21 being arranged on both sides of the axis of the cutting portion 4, respectively, the two first portions 21 being arranged axisymmetrically around the axis of the cutting portion 4. One end of the first portion 21 is arranged at the end of the cutting portion 4 remote from the shank 1, the middle of the first portion 21 is offset towards the direction of rotation of the milling cutter, and the end of the first portion 21 close to the shank 1 is offset towards the direction of rotation away from the milling cutter. Therefore, during the cutting process, the chips can move along the chip grooves 5 towards the tool shank 1, so that the chips are more conveniently discharged.
The second cutting edges 3 are offset in the same direction as the portions where the first cutting edges 2 are disposed, so that virtual extensions of the profiles of the second cutting wheels can pass through the tips of the cutting portions 4, thereby gradually increasing the distance between adjacent second cutting edges 3 as the second cutting edges 3 approach the shank 1. The end of the second cutting edge 3 near the tip of the cutting portion 4 is inclined toward the direction in which the milling cutter rotates, and the end of the second cutting edge 3 near the shank 1 is inclined away from the direction in which the milling cutter rotates, so that the chip grooves 5 provided between adjacent second cutting edges 3 and the chip grooves 5 provided between the first cutting edge 2 and the second cutting edge 3 are the same in orientation, and the width of the cutting edge gradually increases as the tip of the cutting portion 4 is away from, and the cutting is easier to discharge from the chip grooves 5.
The distance from the tip of the second cutting edge 3 away from one end of the tool shank 1 to the tool shank 1 is greater than the distance from the top end of the cutting part 4 to the tool shank 1, so that the second cutting edge 3 firstly cuts a workpiece in the cutting process, and the top end of the second cutting part 4 cannot directly contact the workpiece. The top of cutting portion 4 still is provided with the coaxial groove 41 of stepping down that is provided with, and the groove 41 of stepping down is the hemisphere setting and sets up in the both sides of second cutting edge 3 respectively to the groove 41 of stepping down communicates with chip groove 5, and the groove 41 of stepping down also can hold the chip of part, and makes the chip can get into in the chip groove 5 and discharge, reduces the influence of chip to processing.
The part of the first cutting edge 2 near the top end of the cutting part 4 is arranged perpendicular to the axis of the cutting part 4, the distance between the horizontal position of the first cutting edge 2 and the tool shank 1 is larger than the distance between the tip end of the second cutting edge 3, which is far away from one end of the tool shank 1, and the tool shank 1, so that in the machining process, the second cutting edge 3 firstly performs certain milling on a workpiece, then the first cutting edge 2 performs deeper milling on the workpiece, in the machining process, the machining feeding amount of the second cutting edge 3 is larger, and the feeding amount of the first cutting edge 2 is smaller, and therefore the abrasion of the cutting edges is reduced under the condition that only one first cutting edge 2 is arranged, and meanwhile, the first cutting edge 2 is also utilized for performing one-time fine machining.
The embodiments of the present application are all preferred embodiments of the present application, and are not limited in scope by the present application, so that all equivalent changes according to the structure, shape and principle of the present application are covered by the scope of the present application.
Claims (8)
1. The utility model provides a multi-blade ball-end milling cutter, includes handle of a knife (1), sets up in handle of a knife (1) tip and is cutting portion (4) of ball, sets up a plurality of first cutting edges (2) on cutting portion (4) and sets up and a plurality of second cutting edges (3) on cutting portion (4), first cutting edges (2) set up along the circular arc of cutting portion (4) and pass through the top of cutting portion (4), two tip of first cutting edges (2) set up respectively in the junction of cutting portion (4) and handle of a knife (1), second cutting edges (3) set up around the axis circumference of handle of a knife (1), second cutting edges (3) one end is close to the junction setting of cutting portion (4) and handle of a knife (1), leave the clearance between the other end of second cutting edges (3) and the tip of cutting portion (4), adjacent be provided with chip groove (5) between second cutting edges (3), the both sides of first cutting edges (2) also are provided with chip groove (5), coincide between first cutting edges (2) and second cutting edges (5).
2. A multi-edged ball nose milling cutter according to claim 1, wherein the first cutting edge (2) comprises two first portions (21), the first portions (21) being arranged on both sides of the axis of the shank (1), the middle portions of the first portions (21) being offset towards the cutting direction of the milling cutter, the two first portions (21) being arranged axisymmetrically around the axis of the shank (1).
3. A multi-edged ball nose milling cutter according to claim 2, wherein the end of the second cutting edge (3) adjacent to the end of the cutting portion (4) is offset in the cutting direction of the milling cutter.
4. A multi-edge ball nose milling cutter according to claim 3, wherein the first cutting edge (2) is offset by the same amount as the first cutting edge (2), and the second cutting edge (3) has its own profile extension extending through the tip of the cutting portion (4).
5. The multi-edge ball nose milling cutter according to claim 1, wherein the end, away from the cutter handle (1), of the cutting portion (4) is provided with a relief groove (41), the relief grooves (41) are respectively arranged on two sides of the first cutting edge (2), and the relief grooves (41) are communicated with chip removal grooves (5) on two sides of the first cutting edge (2).
6. The multi-edge ball nose milling cutter according to claim 5, wherein the relief groove (41) is arranged in a hemispherical shape, the axis of the relief groove (41) coincides with the axis of the cutter handle (1), and a gap is reserved between the relief groove (41) and the end part of the second cutting edge (3) close to the cutting part (4).
7. A multi-edge ball nose milling cutter according to claim 1, wherein the portion of the first cutting edge (2) near the top end of the cutting portion (4) is arranged perpendicular to the axis of the cutting portion (4), and the distance from the horizontal position of the first cutting edge (2) to the cutter handle (1) is greater than the distance from the end of the second cutting edge (3) away from the cutter handle (1) to the cutter handle (1).
8. A multi-edged ball nose milling cutter according to claim 1, characterized in that the spacing between adjacent second cutting edges (3) increases gradually with distance from the end of the cutting portion (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421416498.5U CN222856819U (en) | 2024-06-19 | 2024-06-19 | Multi-edge ball end milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421416498.5U CN222856819U (en) | 2024-06-19 | 2024-06-19 | Multi-edge ball end milling cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222856819U true CN222856819U (en) | 2025-05-13 |
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ID=95618887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421416498.5U Active CN222856819U (en) | 2024-06-19 | 2024-06-19 | Multi-edge ball end milling cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222856819U (en) |
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2024
- 2024-06-19 CN CN202421416498.5U patent/CN222856819U/en active Active
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