CN216028286U - Drilling and milling cutter - Google Patents
Drilling and milling cutter Download PDFInfo
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- CN216028286U CN216028286U CN202122482029.6U CN202122482029U CN216028286U CN 216028286 U CN216028286 U CN 216028286U CN 202122482029 U CN202122482029 U CN 202122482029U CN 216028286 U CN216028286 U CN 216028286U
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Abstract
The present invention relates to a drilling and milling tool comprising a tool body having a body centre axis defining opposite forward and rearward directions, and the tool body being rotatable in a direction of rotation about the body centre axis, characterized in that: the cutter body comprises chip removing grooves which are adjacent to the front end surface of the cutter body and are mutually spaced in the circumferential direction, and blades which are respectively arranged in the chip removing grooves corresponding to the chip removing grooves; and a support portion extending from the front end surface of the cutter body in the same direction as the central axis of the body, the support portion and the blade being dependent on each other to provide an axial support force to the blade, the present invention has the advantages over the prior art in that: the cutter body is provided with the blade in the chip groove, and meanwhile, the supporting part which mutually depends on the blade and provides axial supporting force for the blade is arranged on the front end surface of the cutter body, so that sufficient supporting force can be provided for the blade, the phenomenon of cutter breakage is not easy to occur, and the service life of the blade is prolonged.
Description
Technical Field
The utility model relates to a rotary cutter for cutting machining, in particular to a drilling and milling cutter.
Background
Milling cutter assemblies for grooving operations typically have a cutter head with a plurality of insert receiving pockets, with inserts removably mounted in insert receiving pockets in the cutter head and angularly spaced around the periphery of the cutter head to define a pair of peripheral cutting edges and a pair of minor cutting edges. The inserts are generally square in shape to obtain the most indexable cutting edges. The milling cutter assembly may have different configurations depending on the particular application and the desired cutting width. Thus, when a smaller cutting width is required, for example, when machining narrow and deep grooves, a full-sided face mill is generally used, in which the cutter head is a one-piece disc and insert-receiving grooves are provided on the left and right sides of the disc body so that the peripheral cutting edges of the insert-receiving grooves are inclined alternately. However, where a greater cutting width is required, the cutter assembly may be constructed of a plurality of half-sided planar left-hand and right-hand shaped disc cutters stacked alternately coaxially on a cutter arbor. In this case, the working range of the milling cutter can be enlarged as necessary by enlarging the total length of the circumferential cutting edges which are operated simultaneously.
Since each insert is cut by its peripheral and minor cutting edges in a particularly useful operation and is thus subjected to radial and axial cutting forces, the insert mounting slot in the cutter head must provide adequate support means for the insert in both the radial and axial directions.
Disclosure of Invention
The present invention is directed to a drilling and milling tool that can provide sufficient support for an insert in view of the above-mentioned technical situation.
The technical scheme adopted by the utility model for solving the technical problems is as follows: the drilling and milling tool comprises a tool body having a defined relative forward direction (D)F) And a backward direction (D)R) And the tool body is rotatable about the body central axis (B) in a direction of rotation (R), characterized in that: the cutter main body comprises:
at least two chip grooves which are adjacent to the front end surface of the cutter main body and are mutually spaced in the circumferential direction;
the blades are provided with at least two blades which are respectively arranged in the corresponding chip grooves; and
and the supporting part extends out of the front end surface of the cutter body in the same direction of the central axis of the cutter body, and the supporting part and the blade are mutually depended to provide axial supporting force for the blade.
In order to improve the strength and rigidity of the blade, it is preferable that the working side surface of the corresponding blade in each flute is provided with a concave area, and the concave area has a bottom wall and a side wall to support the bottom of the blade together, so that: one of the side walls of the pocket provides radial support for the blade. Wherein the recess of each flute enables the bottom of the insert to be pressed against the recess bottom and one of the side walls of the recess provides the insert with a radial bearing force, which enables the insert to be adaptively selected to a minimum width which can be reduced to half the width of the recess and which avoids the occurrence of a knife break.
In order to enable the concave area of each chip groove to enable the bottom of the blade to be pressed against the bottom of the concave area, and one side wall of the concave area can provide radial supporting force for the blade, preferably, the side wall comprises a first side wall and a second side wall, the first side wall is coaxially parallel to the supporting portion, the second side wall is opposite to the first side wall, an included angle alpha between a straight line of the second side wall and an axis of the supporting portion is, 30 degrees and alpha is smaller than or equal to 150 degrees, and the second side wall can provide radial supporting force for the blade.
In order to enable the blade to be smoothly discharged into the chip removal groove in the drilling and milling process, preferably, the first side wall of the concave area and the chip removal groove are formed with a step, the first side wall forms a first step surface of the step, and the second step surface of the step forms a chip removal inlet of the chip removal groove.
In order to achieve that the bearing section can be rotated together with the tool body in the direction of rotation (R) about the body center axis (B), the width of the bearing section is preferably tapered in the direction of rotation (R) along the tool body.
In order to avoid interference of the support portion with the drilling and milling of the tool body, it is preferred that a first end point of a forwardmost end of the tool body is located before a second end point of the forwardmost end of the support portion.
In order to avoid the splash of the scraps generated by the cutter body in the drilling and milling process, preferably, the chip discharge groove comprises a first groove wall parallel to the supporting part and a second groove wall perpendicular to the supporting part, and the first groove wall and the second groove wall form the chip discharge groove which is an inverted L-shaped chip discharge channel. The second groove wall can prevent the scraps from splashing to the rear direction of the cutter main body, and when the scraps pass through the scrap discharge inlet and then are discharged from front to back along the first groove wall to the second groove wall, the scraps are finally discharged out of the scrap discharge groove by the shielding of the second groove wall.
Compared with the prior art, the utility model has the advantages that: the cutter body is provided with the blade in the chip groove, and meanwhile, the supporting part which mutually depends on the blade and provides axial supporting force for the blade is arranged on the front end surface of the cutter body, so that sufficient supporting force can be provided for the blade, the phenomenon of cutter breakage is not easy to occur, and the service life of the blade is prolonged.
Drawings
FIG. 1 is a schematic view of an angle of a drilling and milling tool according to an embodiment of the present invention;
FIG. 2 is an exploded view of FIG. 1;
fig. 3 is a schematic structural view of fig. 1 without the blade.
Detailed Description
The utility model is described in further detail below with reference to the accompanying examples.
As shown in FIGS. 1 to 3, the preferred embodiment of the present invention is shown. The drilling and milling tool of the present embodiment comprises a tool body 1 having a body central axis B defining opposite forward and rearward directions DF, DR about which the tool body 1 is rotatable in a direction of rotation R, wherein the tool body 1 comprises chip flutes 11 adjacent to a front end face of the tool body 1 and circumferentially spaced apart from each other, the chip flutes 11 of the present embodiment being provided in two, and two inserts 12, each insert 12 being mounted in a respective corresponding chip flute 11 by a fastener 16; and the supporting parts 13 which can mutually depend on each blade 12 and provide axial supporting force for the blades 12, each supporting part 13 extends out of the front end surface of the cutter body 1 in the same direction of the central axis B of the body, the cutter body 1 is provided with the blades 12 in the chip grooves 11, and meanwhile, the supporting parts 13 which mutually depend on the blades and provide axial supporting force for the blades 12 are also arranged on the front end surface of the cutter body 1, so that sufficient supporting force can be provided for the blades 12, the phenomenon of cutter breakage is not easy to occur, and the service life of the blades 12 is prolonged.
Specifically, in order to improve the strength and rigidity of the insert 12, the working side of each flute 11 corresponding to the insert 12 is provided with a recessed area 111, and the recessed area 111 has a bottom wall and a side wall to support the bottom of the insert together, thereby realizing: one of the side walls of the recess 111 is configured to provide radial support to the blade 12. Wherein the recessed area 111 of each flute 11 enables the bottom of the blade 12 to be pressed against the bottom of the recessed area 111, and one of the side walls of the recessed area 111 can provide the blade 12 with a radial bearing force, so that the blade 12 can be adaptively selected to a minimum blade width which can be reduced to half of the width of the recessed area, and the occurrence of the blade breakage phenomenon can be avoided. In addition, in order to enable the recessed area 111 of each chip flute 11 to enable the bottom of the blade 12 to be pressed against the bottom of the recessed area 111, and one of the side walls of the recess 111 is capable of providing the insert with a radial support force, preferably, the side wall of the recess 111 of each flute 12 comprises a first side wall 111b coaxially parallel to the support portion 13 and a second side wall 111c opposite to the first side wall 111b, an included angle a between a line on which the second side wall 111c is located and an axis on which the support portion 13 is located, and alpha is 145 deg., while the second side wall 111c is configured to provide radial support to the insert 12, and the width of the support portion 13 can be gradually reduced in the rotation direction R along the tool body 11, so that the support portion 13 can rotate together with the tool body 1 about the body central axis B in the rotation direction R, and finally, in order to avoid the support portion 13 interfering with the drilling and milling of the tool body 1, the first end point of the foremost end of the tool body 1 is located before the second end point of the foremost end of the support portion 13.
In addition to the design of the bearing portion 13, the drilling and milling tool has a special design for the chip groove 111, wherein, in order to enable the insert 12 to be smoothly discharged into the chip groove 11 during the drilling and milling process, the first side wall 111b of the concave area 111 in the chip groove 11 and the chip groove 11 form a step 14, the first side wall 111b forms a first step surface of the step 14, and the second step surface 142 of the step 14 forms a chip discharge inlet of the chip groove 111. In addition, in order to avoid the chips generated by the tool body 1 during the drilling and milling processes from splashing, the chip removal groove 111 includes a first groove wall 112 parallel to the support portion and a second groove wall 113 perpendicular to the support portion, the first groove wall 112 and the second groove wall 113 form an inverted L-shaped chip removal channel, wherein the second groove wall 113 can prevent the chips from splashing toward the rear direction of the tool body 1, and the chips are discharged from the front direction and the rear direction along the first groove wall 112 toward the second groove wall 113 after passing through the chip removal inlet, and finally fall out of the chip removal groove 111 by being shielded by the second groove wall 113.
In summary, the use process of the drilling and milling cutter is as follows: when a workpiece needs to be machined, a handle part protruding backwards from the tool body 1 is mounted on a driving part of the drilling and milling equipment, a corresponding insert 12 is selected according to the required workpiece, and the insert 12 is embedded into the concave area 111 of the chip groove 11, wherein the second side wall 111c of the concave area 111 and the supporting part 13 can respectively provide radial and axial supporting force for the insert 12.
Claims (7)
1. A drilling and milling tool comprises a tool body (1) having a defined relative forward direction (D)F) And a backward direction (D)R) And the tool body (1) is rotatable about the body centre axis (B) in a direction of rotation (R), characterized in that: the tool body (1) comprises:
chip grooves (11) which are adjacent to the front end surface of the cutter main body (1) and are at least two in circumferential direction;
the blades (12) are provided with at least two blades which are respectively arranged in the corresponding chip grooves (11); and
and a support part (13) extending from the front end surface of the tool body (1) in the same direction as the body center axis (B), the support part (13) and the insert (12) being in contact with each other to provide the insert (12) with an axial support force.
2. The drilling and milling tool of claim 1, wherein: the working side of each flute (11) corresponding to the blade (12) is provided with a concave area (111), and the concave area (111) is provided with a bottom wall (111a) and a side wall to jointly support the bottom of the blade (12), so that the following effects are achieved: one of the side walls of the recess (111) is adapted to provide radial support to the blade (12).
3. The drilling and milling tool of claim 2, wherein: the side wall comprises a first side wall (111b) which is coaxially parallel to the supporting part (13) and a second side wall (111c) which is opposite to the first side wall (111b), an included angle alpha between a straight line where the second side wall (111c) is located and an axis where the supporting part (13) is located is larger than or equal to 30 degrees and smaller than or equal to 150 degrees, and the second side wall (111c) can provide radial supporting force for the blade (12).
4. The drilling and milling tool of claim 3, wherein: first lateral wall (111b) of concave area (111) with chip groove (11) are formed with step (14), first lateral wall (111b) constitute the first step face of step (14), and second step face (142) of step (14) then constitute the chip removal entry of chip groove (11).
5. The drilling and milling tool as set forth in any one of claims 1 to 4, wherein: the width of the support part (13) can be reduced gradually in the direction of rotation (R) along the tool body (1).
6. The drilling and milling tool of claim 5, wherein: the first end point of the most front end of the tool body (1) is located before the second end point of the most front end of the support part (13).
7. The drilling and milling tool of claim 6, wherein: chip groove (11) including with first cell wall (112) that support portion (13) are parallel and with support portion (13) vertically second cell wall (113), first cell wall (112) constitute with second cell wall (113) chip groove (11) are the chip removal passageway of inversion "L" type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122482029.6U CN216028286U (en) | 2021-10-14 | 2021-10-14 | Drilling and milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122482029.6U CN216028286U (en) | 2021-10-14 | 2021-10-14 | Drilling and milling cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216028286U true CN216028286U (en) | 2022-03-15 |
Family
ID=80609316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122482029.6U Active CN216028286U (en) | 2021-10-14 | 2021-10-14 | Drilling and milling cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216028286U (en) |
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2021
- 2021-10-14 CN CN202122482029.6U patent/CN216028286U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 68, Yanshanhe South Road, Beilun District, Ningbo, Zhejiang 315825 Patentee after: Ningbo Xusheng Group Co.,Ltd. Address before: No. 128, yingluohe Road, Beilun District, Ningbo, Zhejiang 315825 Patentee before: NINGBO XUSHENG AUTO TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address |