CN220515506U - Cemented carbide expansion drill bit - Google Patents
Cemented carbide expansion drill bit Download PDFInfo
- Publication number
- CN220515506U CN220515506U CN202321816509.4U CN202321816509U CN220515506U CN 220515506 U CN220515506 U CN 220515506U CN 202321816509 U CN202321816509 U CN 202321816509U CN 220515506 U CN220515506 U CN 220515506U
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- Prior art keywords
- groove
- drill bit
- cutter
- bit body
- driving rod
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- 238000003860 storage Methods 0.000 abstract description 5
- 239000000956 alloy Substances 0.000 abstract description 3
- 229910045601 alloy Inorganic materials 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003754 machining 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
Abstract
The utility model provides a hard alloy expanding drill bit, and aims to solve the technical problems that in the prior art, the whole set of expanding drill bit is time-consuming in storage and time-consuming and labor-consuming in installation. The expansion drill bit includes: the drill bit comprises a drill bit body, wherein the drill bit body is provided with a through groove, the through groove is close to a cutter on the drill bit body, the drill bit body is provided with a connecting groove which is equal to the through groove and is mutually perpendicular to the through groove, and the length direction of the connecting groove is consistent with the length direction of the through groove; one end of the cutter handle is rotationally connected with one end of the through groove, which is close to the cutter, the length of the cutter handle is smaller than that of the through groove, the cutter handle is provided with two cutter handles which are respectively arranged at two sides of the through groove, and one side, away from each other, of the two cutter handles is a cutter edge; the two ends of the driving rod are respectively connected with one side of the two knife handles, which is close to each other, in a sliding way; one end of the connecting rod is vertically arranged in the middle of the driving rod, and the other end of the connecting rod penetrates out of the connecting groove. The expanding drill bit has the advantages of simplifying storage and processing holes with blind holes without replacing the drill bit.
Description
Technical Field
The utility model relates to a drill bit, in particular to a hard alloy expansion drill bit.
Background
And (5) reaming the drill bit, namely, the drill bit for expanding the aperture. Currently, reaming bits commonly found in the market are usually complete sets, each set of bits having a plurality of bits of unequal diameters for use in machining holes of different diameters.
The whole set of drill bit has two problems in the practical process: 1. in the aspect of storage, the whole set of drill bits are more in quantity, and after one-time production and processing are completed, all the drill bits need to be reset, and a certain time is needed. 2. In the aspect of assembly, when processing the holes with different apertures on the same drilling machine, different drill bits need to be replaced, which is time-consuming and labor-consuming.
Disclosure of Invention
Aiming at the technical problems that the whole set of reamer bit is time-consuming in storage and time-consuming and labor-consuming in installation in the use process in the prior art, the utility model provides a hard alloy expansion bit, which has the advantages of simplifying storage and processing a hole with a blind hole diameter without replacing the bit.
The technical scheme of the utility model is as follows:
a cemented carbide expansion bit comprising:
the drill bit comprises a drill bit body, wherein the drill bit body is provided with a through groove, the length direction of the through groove is consistent with the length direction of the drill bit body, the through groove is close to a cutter on the drill bit body, the drill bit body is provided with a connecting groove which is equal to the through groove and is mutually perpendicular to the through groove, and the length direction of the connecting groove is consistent with the length direction of the through groove;
the cutter handle is in a strip-shaped structure, one end of the cutter handle is rotationally connected with one end of the through groove, which is close to the cutter, the length of the cutter handle is smaller than that of the through groove, the cutter handle is provided with two cutter handles which are respectively arranged at two sides of the through groove, and one sides of the two cutter handles, which are far away from each other, are cutter edges;
the driving rod is transversely arranged in the through groove, and two ends of the driving rod are respectively connected with one side, close to the two knife handles, of each other in a sliding manner;
and one end of the connecting rod is vertically arranged in the middle of the driving rod, the other end of the connecting rod penetrates out of the connecting groove, and the connecting rod can be fixed at any position of the connecting groove.
Optionally, the through groove and the connecting groove form a columnar space with a cross section, two sides of the driving rod are respectively provided with a connecting rod, two connecting rods respectively penetrate through one connecting groove, one end of the connecting rod, which is far away from the driving rod, is provided with a screw, and the diameter of a nut of the screw is larger than the width of the connecting groove.
Optionally, the drill bit body is provided with two embedded grooves, the two embedded grooves are respectively located at one side of the connecting groove away from the through groove, and the nut of the screw can be placed in the embedded grooves.
Optionally, a sliding groove is respectively formed on one side surface of the two knife handles, which are close to each other, and a sliding rod which is arranged in the sliding groove in a sliding way is respectively arranged at two ends of the driving rod.
Optionally, the cross section of spout is T shape, the middle part of slide bar with the end connection of actuating lever forms T shape structure.
Optionally, one side of the connecting groove is provided with graduations along the length direction thereof.
Compared with the prior art, the utility model has the beneficial effects that:
the drill bit comprises a drill bit body, a drill bit is arranged on the drill bit body, a through groove is formed in the end portion of the drill bit body, cutter handles are arranged on two sides of the through groove, one side of a cutter edge of each cutter handle faces outwards, the outwards-opened sizes of the two cutter handles are controlled through a driving rod, the position of the driving rod is controlled through a connecting rod, and the driving rod is positioned.
In the technical scheme, the two cutter handles are outwards expanded, so that the size of the hole of the drill bit can be enlarged by adjusting the cutter handles, and the problem that the drill bit with different apertures needs to be assembled in a whole set can be avoided.
Drawings
In order to more clearly illustrate the embodiments of the present application 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 below, it being obvious that the drawings in the following description are only some embodiments of the present application, 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 perspective view of the present utility model;
fig. 2 is a partially enlarged schematic perspective view of the present utility model.
Detailed Description
Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships conventionally placed in use of the product of the present utility model, or orientations or positional relationships conventionally understood by those skilled in the art, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.
Examples:
referring to fig. 1 and 2, a cemented carbide expansion drill bit includes a bit body 1, a shank 2, a driving rod 3, and a connecting rod 4. Specifically, the drill bit body 1 is made of cemented carbide, one end of the drill bit body 1 is provided with three straight surfaces which are uniformly distributed and used for being connected with calipers of a machine tool (generally a drilling machine), and the other end of the drill bit body 1 is provided with a cutter for cutting a workpiece.
The drill bit body 1 is provided with a through groove 5 and two connecting grooves 6, the through groove 5 and the connecting grooves 6 are all close to one end of a cutter of the drill bit body 1, the lengths of the through groove 5 and the connecting grooves 6 are equal, the length direction of the drill bit body 1 is uniform, the two connecting grooves 6 are respectively arranged on two sides of the through groove 5, the through groove 5 and the two connecting grooves 6 are distributed in a cross shape in the middle of the drill bit body 1, and the through groove 5 and the connecting grooves 6 form a columnar space with a cross shape in cross section.
The two knife handles 2 are respectively arranged on two sides of the through groove 5, the knife handles 2 are of long-strip-shaped structures, and the length of the knife handles 2 is smaller than that of the through groove 6. One end of the knife handle 2 is rotationally connected with one end of the through groove 5, one end of the knife handle 2 connected with the through groove 5 is close to the knife tool, and the two knife handles 2 can be splayed in the through groove 5. The side of the two knife handles 2, which are far away from each other, is a knife edge for cutting.
The driving rod 3 is transversely arranged in the through groove 5, the length direction of the driving rod 3 is perpendicular to the length direction of the through groove 5, two ends of the driving rod 3 are respectively connected with one side, close to the two knife handles 2, of the driving rod 2 in a sliding mode, and the length of the driving rod 3 is smaller than or equal to the width of the through groove 5.
One end of the connecting rod 4 is fixedly arranged on one side of the middle part of the driving rod 3, and the length direction of the connecting rod 4 is perpendicular to the length direction of the driving rod 3. The other end of the connecting rod 4 passes through the connecting groove 6, and the end of the connecting rod 4 can be fixed at any position of the connecting groove 6.
Preferably, a connecting rod 4 is respectively arranged at two sides of the driving rod 3, two connecting rods 4 respectively pass through connecting grooves 6 at two sides of the through groove 5, meanwhile, a threaded hole is arranged at one end of the connecting rod 4 far away from the driving rod 3, and a screw is arranged in the threaded hole in a matched manner. Wherein, the length of the connecting rod 4 is smaller than or equal to the width of the connecting groove 6, so that the connecting rod 4 can be fixed at any position of the connecting groove 6 when the position of the screw on the connecting rod 4 is adjusted. In addition, when the screw is loosened, the position of the driving rod 3 can be adjusted by moving the position of the screw, thereby adjusting the width of the two tool shanks 2.
The drill bit comprises a drill bit body 1, a cutter handle 2, a driving rod 3, a connecting rod 4, a driving rod 3 and a cutter handle 2, wherein the cutter handle 2 is arranged at the end part of the drill bit body 1, one side of the cutter edge of the cutter handle 2 faces outwards, the driving rod 3 is used for controlling the outwards opening size of the two cutter handles 2, and the connecting rod 4 is used for controlling the position of the driving rod 3 and positioning the driving rod 3.
In the technical scheme, the two cutter handles 2 are outwards expanded, so that the size of the hole of the drill bit can be enlarged by adjusting the size, and the problem that the drill bit with different apertures needs to be assembled in a whole set can be avoided.
In one particular embodiment:
the drill bit body 1 is also provided with two embedded grooves, the two embedded grooves are respectively positioned on one side of the two connecting grooves 6 away from the through groove 5, and the length of the embedded grooves is equal to that of the connecting grooves 6. The depth of the embedded groove is equal to the thickness of the nut on the screw, and the width of the embedded groove is equal to the diameter of the nut. When the position of the connecting rod 4 needs to be fixed, the screw cap is tightly attached to the inner wall of the embedded groove, and the position of the connecting rod 4 is fixed by means of friction force. In this embodiment, the embedded groove is provided, so that the contact area between the nut and the bit body 1 can be increased, and the friction force can be increased.
In another specific embodiment:
one side surface of the two knife handles 2, which are close to each other, is respectively provided with a chute 7, and the section of the chute 7 is T-shaped.
The both ends of actuating lever 3 are provided with a slide bar respectively, and the length direction of slide bar is perpendicular with the length direction of actuating lever 3, and the slide bar forms a T shape structure with the tip of actuating lever 3, and the slide bar slides and sets up in spout 7.
The T-shaped structure formed by the slide bar and the driving rod 3 is matched with the chute 7 of the T-shaped structure.
In this embodiment, the sliding groove 7 and the sliding rod are provided, so that the situation that the tool handle 2 is uncontrollable due to the centrifugal force when the drill body 1 rotates can be avoided.
In another specific embodiment:
one side of the connecting groove 6 is provided with graduations along the length direction thereof, and the graduation values are increased from top to bottom. The scale corresponds to the distance between the two ends of the two knife handles 2 after being unfolded, i.e. the size of the expandable hole.
The foregoing examples merely illustrate specific embodiments of the utility model, which are described in greater detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model.
Claims (6)
1. A cemented carbide expansion drill bit, comprising:
the drill bit comprises a drill bit body, wherein the drill bit body is provided with a through groove, the length direction of the through groove is consistent with the length direction of the drill bit body, the through groove is close to a cutter on the drill bit body, the drill bit body is provided with a connecting groove which is equal to the through groove and is mutually perpendicular to the through groove, and the length direction of the connecting groove is consistent with the length direction of the through groove;
the cutter handle is in a strip-shaped structure, one end of the cutter handle is rotationally connected with one end of the through groove, which is close to the cutter, the length of the cutter handle is smaller than that of the through groove, the cutter handle is provided with two cutter handles which are respectively arranged at two sides of the through groove, and one sides of the two cutter handles, which are far away from each other, are cutter edges;
the driving rod is transversely arranged in the through groove, and two ends of the driving rod are respectively connected with one side, close to the two knife handles, of each other in a sliding manner;
and one end of the connecting rod is vertically arranged in the middle of the driving rod, the other end of the connecting rod penetrates out of the connecting groove, and the connecting rod can be fixed at any position of the connecting groove.
2. The cemented carbide expanding drill bit according to claim 1, wherein the through groove and the connecting groove form a columnar space with cross-shaped cross section, two sides of the driving rod are respectively provided with a connecting rod, two connecting rods respectively penetrate through one connecting groove, one end of the connecting rod far away from the driving rod is provided with a screw, and the diameter of the nut of the screw is larger than the width of the connecting groove.
3. The cemented carbide expanding drill bit according to claim 2, wherein the drill bit body has two insert grooves, the two insert grooves being located on the side of the connecting groove remote from the through groove, respectively, the nut of the screw being receivable in the insert grooves.
4. The cemented carbide expanding drill bit according to claim 1, wherein two of the tool shanks have a respective slide groove on a side surface thereof adjacent to each other, and the drive rod has a respective slide bar slidably disposed in the slide groove at both ends thereof.
5. The cemented carbide expanding drill bit according to claim 4, wherein the chute is T-shaped in cross section, the middle portion of the slide bar being connected to the end portion of the drive rod and forming a T-shaped structure.
6. The cemented carbide expanding drill bit according to claim 1, wherein one side of the connecting groove is provided with graduations along its length direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321816509.4U CN220515506U (en) | 2023-07-11 | 2023-07-11 | Cemented carbide expansion drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321816509.4U CN220515506U (en) | 2023-07-11 | 2023-07-11 | Cemented carbide expansion drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220515506U true CN220515506U (en) | 2024-02-23 |
Family
ID=89923528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321816509.4U Active CN220515506U (en) | 2023-07-11 | 2023-07-11 | Cemented carbide expansion drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220515506U (en) |
-
2023
- 2023-07-11 CN CN202321816509.4U patent/CN220515506U/en active Active
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