CN215824339U - Flat-bottom drill for processing large-diameter flat-bottom blind hole - Google Patents
Flat-bottom drill for processing large-diameter flat-bottom blind hole Download PDFInfo
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- CN215824339U CN215824339U CN202121840603.4U CN202121840603U CN215824339U CN 215824339 U CN215824339 U CN 215824339U CN 202121840603 U CN202121840603 U CN 202121840603U CN 215824339 U CN215824339 U CN 215824339U
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Abstract
The utility model discloses a flat drill for processing a large-diameter flat-bottom blind hole, which comprises a tool handle, a neck and a tool body, wherein one end of the tool handle is fixedly connected with the tool body through the neck, the tool body is circular and comprises a circular bottom surface, a central cross blade, a first arc blade and a second arc blade, the central cross blade is arranged by penetrating through the circular bottom surface and vertically upwards, the first arc blade and the second arc blade are respectively arranged at two sides of the central cross blade, the first arc blade and the second arc blade are vertically upwards arranged along the edge of the circular bottom surface, one end of the central cross blade is connected with the end part of the first arc blade, the other end of the central cross blade is connected with the end part of the second arc blade, and the first arc blade and the second arc blade are centrosymmetric; the flat-bottom drill can finish machining the large-diameter flat-bottom blind hole at one time, and is high in machining precision, sharp in round edge and high in machining efficiency.
Description
Technical Field
The utility model belongs to the technical field of machining cutters, and particularly relates to a flat-bottom drill for machining a large-diameter flat-bottom blind hole.
Background
The flat-bottom blind hole is used as the difficulty of hole machining, and the problem is more prominent in numerical control machining because a numerical control machine is executed strictly according to an edited program, is not flexible enough and has no intelligence; when a flat-bottom blind hole with a larger diameter is processed, a plurality of procedures are needed, usually, a drill is used for drilling, then a boring cutter is used for boring or a spot facing cutter is used for spot facing, and finally a round blind hole is formed; the flat-bottom blind hole processed by the method has the phenomena of unclear edge and no sharp, the bottom surface is frequently ground again due to the uneven bottom surface, and the problems of inaccurate positioning, low precision and low processing efficiency exist in the process of adopting various cutters to change the cutter midway.
Disclosure of Invention
In view of the above problems and technical needs, the present invention provides a flat bottom drill capable of machining large diameter flat bottom blind holes at one time.
The technical scheme of the utility model is as follows: a flat brill for flat blind hole processing of major diameter, including handle of a knife, neck and cutter body, handle of a knife one end is passed through neck and cutter body fixed connection, the cutter body is circular, including round bottom surface and protrusion in central chisel edge, first circular arc sword and the second circular arc sword that round bottom surface set up, central chisel edge runs through and upwards sets up perpendicularly in the round bottom surface, and the both sides of central chisel edge are located to first circular arc sword and second circular arc sword branch, and first circular arc sword and second circular arc sword upwards set up perpendicularly along the edge of round bottom surface, and central chisel edge one end and the end connection of first circular arc sword, the other end and the end connection of second circular arc sword, first circular arc sword and second circular arc sword are central symmetry. In this cutter, the central chisel edge can mill round hole center bottom surface, and first circular arc sword and second circular arc sword are along the edge cutting, and the round hole edge that can make the formation is accurate sharp, makes the blind hole of final formation have higher precision.
Furthermore, enclose synthetic first chip pocket between central chisel edge on the round bottom surface and the first circular arc sword, enclose synthetic second chip pocket between central chisel edge and the second circular arc sword, the one end that first circular arc sword and second circular arc sword are not connected with central chisel edge all forms the chip removal mouth. Drilling needs one shot forming, but because the circular blind hole that forms is the major diameter round hole of shallowness, so the smear metal is difficult to be extruded along with deepening drilling, sets up two chip pockets and can keep in the smear metal on the left and right sides of center chisel edge, can also be discharged along the chip removal mouth after the smear metal is stored up fully.
Furthermore, a drill point is arranged at the center of the central chisel edge, and the drill point is in a quadrangular pyramid shape. The drill point has the effect of centering, can prevent the cutter body vibrations, guarantees not squint at drilling in-process center.
Furthermore, the first arc blade comprises a first arc seat and a first knife tooth group, the first knife tooth group is arranged along the top end face of the first arc seat, the second arc blade comprises a second arc seat and a second knife tooth group, the second knife tooth group is arranged along the top end face of the second arc seat, and the thicknesses of the first arc seat and the second arc seat are equal.
Furthermore, the first cutter tooth group consists of three first cutter teeth, the first cutter teeth incline outwards, and the blade parts and the blade tips of the first cutter teeth are arranged on the extension surface of the outer surface of the first arc seat.
Furthermore, the second cutter tooth group consists of three second cutter teeth, the second cutter teeth incline inwards, and the blade parts and the blade tips of the second cutter teeth are arranged on the extension surface of the inner surface of the second arc seat.
Furthermore, the cutting edge of the first cutter tooth is in a pointed shape, and the cutting edge of the second cutter tooth is in a straight line shape parallel to the round bottom surface.
In the above scheme, the first cutter tooth and the second cutter tooth have the same root width, the first cutter tooth edge part is in a pointed shape towards the outer cutting edge, so that a sharp round edge can be cut, and the second cutter tooth edge part is outwards, the cutting edge part is in a straight line shape and is relatively blunt compared with the pointed shape, so that the inward part of the first cutter tooth can be supplemented, and the round edge is connected with the central bottom surface.
Further, the cutter body is made of hard alloy, and the central chisel edge, the first circular arc edge and the second circular arc edge are all coated with diamond coatings.
Compared with the prior art, the utility model has the beneficial effects that: the cutter is used for processing a round flat-bottom blind hole, the sharp cutting edge of the first cutter tooth can ensure that a sharp round edge is cut, the second cutter tooth can further cut the inner area of the round edge, the central cross edge can ensure that the formed round bottom surface is smooth and neat, two ends of the central cross edge are respectively connected with the first arc edge and the second arc edge, so that the bottom surface and the round edge form a cutting whole, and the drill point in the middle of the central cross edge can ensure that the center does not move in the processing process; adopt this cutter processing flat bed hole, can obtain a major diameter round hole that has sharp edge, its precision is high, and machining efficiency is far above traditional processing mode.
Drawings
FIG. 1 is a first perspective view of a flat-bottom drill for machining a large-diameter flat-bottom blind hole according to the present invention;
FIG. 2 is a second perspective view of the flat-bottom drill for machining large-diameter flat-bottom blind holes of the present invention;
FIG. 3 is an end view of the flat bottom drill of the present invention for large diameter flat bottom blind hole machining;
labeled as: the cutter body 1, the round bottom surface 11, the central chisel edge 12, the drill tip 121, the first arc edge 13, the first arc seat 131, the first cutter tooth group 132, the second arc edge 14, the second arc seat 141, the second cutter tooth group 142, the first chip groove 15, the second chip groove 16, the chip removal port 17, the neck 2 and the cutter handle 3.
Detailed Description
The utility model is further described below with reference to the figures and examples.
As shown in fig. 1-3, the flat-bottom drill for processing the large-diameter flat-bottom blind hole of the utility model comprises a shank 3, a neck 2 and a cutter body 1, wherein one end of the shank 3 is fixedly connected with the cutter body 1 through the neck 2.
The cutter body 1 is circular, including round bottom surface 11 and protrusion in the central chisel edge 12, first circular arc sword 13 and the second circular arc sword 14 of round bottom surface 11 setting, central chisel edge 12 runs through and upwards sets up in round bottom surface 11 is perpendicular, and the center department of central chisel edge 12 is equipped with drill point 121, and drill point 121 is four pyramids, and drill point 121 has the effect of centering, can prevent cutter body 1 vibrations, guarantees not squint at drilling in-process center.
The first circular arc blade 13 and the second circular arc blade 14 are respectively arranged on two sides of the central chisel edge 12, the first circular arc blade 13 and the second circular arc blade 14 are vertically and upwards arranged along the edge of the circular bottom surface 11, one end of the central chisel edge 12 is connected with the end of the first circular arc blade 13, the other end of the central chisel edge is connected with the end of the second circular arc blade 14, and the first circular arc blade 13 and the second circular arc blade 14 are in central symmetry. The first arc blade 13 comprises a first arc seat 131 and a first cutter tooth group 132, the first cutter tooth group 132 is arranged along the top end face of the first arc seat 131, the second arc blade 14 comprises a second arc seat 141 and a second cutter tooth group 142, the second cutter tooth group 142 is arranged along the top end face of the second arc seat 141, and the thicknesses of the first arc seat 131 and the second arc seat 141 are equal.
The first cutter tooth group 132 is composed of three first cutter teeth, the first cutter teeth incline outwards, and the blade parts and the blade tips of the first cutter teeth are arranged on the extension surfaces of the outer surfaces of the first circular arc seats 131. The second cutter tooth group 142 is composed of three second cutter teeth, the second cutter teeth incline inwards, and the blade parts and the blade tips of the second cutter teeth are both arranged on the extension surface of the inner surface of the second circular arc seat 141. The cutting edge of the first cutter tooth is in a pointed shape, and the cutting edge of the second cutter tooth is in a straight line shape parallel to the round bottom surface. The first cutter tooth and the second cutter tooth have the same root width, the edge part of the first cutter tooth is in a pointed shape towards the outer cutting edge, the sharp round edge can be cut, the edge part of the second cutter tooth faces outwards, the edge part is in a straight line shape, the edge part is relatively blunt compared with the pointed shape, and the inward part of the first cutter tooth can be supplemented with chips to be connected with the round edge and the central bottom surface.
The cutter body 1 is made of hard alloy, and diamond coatings are coated on the central chisel edge 12, the first circular arc edge 13 and the second circular arc edge 14; a first chip groove 15 is formed between the central chisel edge 12 and the first circular arc edge 13 on the circular bottom surface 11, a second chip groove 16 is formed between the central chisel edge 12 and the second circular arc edge 14, and chip removal ports 17 are formed at the ends of the first circular arc edge 13 and the second circular arc edge 14 which are not connected with the central chisel edge 12. The drilling needs one shot forming, but because the circular blind hole that forms is the major diameter round hole of shallowness, so the smear metal is difficult to be extruded along with deepening the drilling, sets up two chip pockets and can keep in the smear metal in the left and right sides of center chisel edge, can also be discharged along chip discharge opening 17 after the smear metal is stored up.
The above description is only for the preferred embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes and substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A flat brill that is used for flat blind hole processing of major diameter, its characterized in that: including handle of a knife, neck and cutter body, handle of a knife one end is passed through neck and cutter body fixed connection, the cutter body is circular, including bottom surface of a circle and protrusion in central chisel edge, first circular arc sword and the second circular arc sword that the bottom surface of a circle set up, central chisel edge runs through and upwards sets up perpendicularly in the bottom surface of a circle, and the both sides of central chisel edge are located to first circular arc sword and second circular arc sword branch, and first circular arc sword and second circular arc sword upwards set up perpendicularly along the edge of bottom surface of a circle, the end connection of central chisel edge one end and first circular arc sword, the other end and the end connection of second circular arc sword, first circular arc sword and second circular arc sword are central symmetry.
2. The flat-bottom drill for large-diameter flat-bottom blind hole machining according to claim 1, characterized in that: enclose synthetic first chip pocket between central chisel edge on the round bottom surface and the first circular arc sword, enclose synthetic second chip pocket between central chisel edge and the second circular arc sword, the one end that first circular arc sword and second circular arc sword are not connected with central chisel edge all forms the chip removal mouth.
3. The flat-bottom drill for large-diameter flat-bottom blind hole machining according to claim 1, characterized in that: the center of the central chisel edge is provided with a drill point which is in a quadrangular pyramid shape.
4. The flat-bottom drill for large-diameter flat-bottom blind hole machining according to claim 1, characterized in that: the first arc blade comprises a first arc seat and a first blade tooth group, the first blade tooth group is arranged along the top end face of the first arc seat, the second arc blade comprises a second arc seat and a second blade tooth group, the second blade tooth group is arranged along the top end face of the second arc seat, and the thicknesses of the first arc seat and the second arc seat are equal.
5. The flat-bottom drill for large-diameter flat-bottom blind hole machining according to claim 4, characterized in that: the first cutter tooth group consists of three first cutter teeth, the first cutter teeth incline outwards, and the cutting edges of the first cutter teeth are both arranged on the extension surface of the outer surface of the first arc seat.
6. The flat-bottom drill for large-diameter flat-bottom blind hole machining according to claim 5, characterized in that: the second cutter tooth group consists of three second cutter teeth, the second cutter teeth incline inwards, and the cutting edges of the second cutter teeth are both arranged on the extension surface of the inner surface of the second arc seat.
7. The flat-bottom drill for large-diameter flat-bottom blind hole machining according to claim 6, characterized in that: the cutting edge of the first cutter tooth is in a pointed shape, and the cutting edge of the second cutter tooth is in a straight line shape parallel to the round bottom surface.
8. The flat-bottom drill for large-diameter flat-bottom blind hole machining according to claim 1, characterized in that: the cutter body is made of hard alloy, and diamond coatings are coated on the central chisel edge, the first circular arc edge and the second circular arc edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121840603.4U CN215824339U (en) | 2021-08-06 | 2021-08-06 | Flat-bottom drill for processing large-diameter flat-bottom blind hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121840603.4U CN215824339U (en) | 2021-08-06 | 2021-08-06 | Flat-bottom drill for processing large-diameter flat-bottom blind hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215824339U true CN215824339U (en) | 2022-02-15 |
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ID=80194247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121840603.4U Active CN215824339U (en) | 2021-08-06 | 2021-08-06 | Flat-bottom drill for processing large-diameter flat-bottom blind hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215824339U (en) |
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2021
- 2021-08-06 CN CN202121840603.4U patent/CN215824339U/en active Active
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