CN215509122U - Tool apron device for drill bit - Google Patents
Tool apron device for drill bit Download PDFInfo
- Publication number
- CN215509122U CN215509122U CN202121945214.8U CN202121945214U CN215509122U CN 215509122 U CN215509122 U CN 215509122U CN 202121945214 U CN202121945214 U CN 202121945214U CN 215509122 U CN215509122 U CN 215509122U
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- blade
- mounting groove
- cutter
- mounting
- drill bit
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Abstract
The utility model provides a cutter holder device for a drill bit, which comprises a cutter bar, a cutter holder installation groove arranged on the cutter bar, a cutter holder arranged in the cutter holder installation groove and a blade arranged in the cutter holder; the tool apron comprises a base body, a blade mounting groove arranged in the base body, an arc-shaped first mounting part arranged on one side of the base body, a planar second mounting part connected with the first mounting part, first mounting holes arranged at the bottom and two sides of the blade mounting groove and second mounting holes arranged at the middle position of the blade mounting groove; an opening is formed in one side of the blade mounting groove, and the opening is different from the first mounting portion and the second mounting portion. This blade holder device adopts the mode that circular arc and straight line combined together, can ensure that the angle between the axis of blade and cutting edge and cutter arbor is unanimous to reduced the size of blade holder, the cutter nest that the cutter arbor need be got rid of is less, can ensure the intensity of cutter arbor, further extension this a blade holder device for drill bit's life.
Description
Technical Field
The utility model relates to the technical field of drill bits, in particular to a tool apron device for a drill bit.
Background
Drill bits are widely used in machining for cutting, drilling, and the like. For some larger diameter bits, it is necessary to mount a blade at the end of the bit for the cutting process. The mode of directly installing the blade on the drill bit, the cutting force is great in the blade cutting process, and the blade is easy to damage. And the drill bit mounting groove is directly arranged on the cutter bar, so that the strength of the cutter bar can be influenced. There is therefore a need for a tool holder that protects the tool holder from damage, helping the customer save on production costs.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to a tool holder device for a drill, so as to solve the above problems.
In order to achieve the purpose, the utility model provides the following technical scheme:
a tool apron device for a drill bit comprises a tool apron, a tool apron mounting groove arranged on the tool apron, a tool apron arranged in the tool apron mounting groove and a blade arranged in the tool apron;
the tool apron comprises a seat body, a blade mounting groove arranged in the seat body, an arc-shaped first mounting part arranged on one side of the seat body, a planar second mounting part connected with the first mounting part, a first mounting hole arranged on one side of the blade mounting groove and a second mounting hole arranged in the middle of the blade mounting groove; an opening is formed in one side of the blade mounting groove, and the opening is different from the first mounting portion and the second mounting portion.
Further, the blade mounting groove is three horn shapes, the blade mounting groove with first installation department with one side that the second installation department is the same forms the boss, two lateral walls of blade mounting groove include first cell wall and second cell wall respectively, first cell wall with be the obtuse angle between the second cell wall, first cell wall with second cell wall length is the same.
Further, the joint of the blade mounting groove and the other side of the blade mounting groove are respectively provided with a avoiding hole.
Further, the second mounting hole is located near one side of the opening, the blade is in the same shape as the blade mounting groove, and the cutting edge of the blade extends out of the opening of the blade mounting groove.
Further, the blade comprises three cutting edges, and when the blade rotates 120 degrees along the central line of the blade, the three cutting edges rotate 120 degrees synchronously and are respectively positioned at the position of the last cutting edge.
Further, an angle between the first slot wall and the second slot wall is 146 degrees to 166 degrees.
Further, the cutter bar is provided with a vertex angle corresponding to the opening.
The utility model has the beneficial effects that:
the arc-shaped first mounting part is combined with the planar second mounting part, so that the angle between the cutter holder and the axis of the cutter bar can be ensured, the positioning is accurate and convenient, the angle between the blade and the axis of the cutter bar is further ensured to be consistent, the angle is not required to be adjusted every time, and the time and the labor are saved;
in addition, the arc-shaped first installation part and the planar second installation part are combined, the size of the cutter holder is reduced, and therefore during installation of the cutter holder installation groove in the cutter bar, the cutter nest required to be removed by the cutter bar is small in size, the strength of the cutter bar can be ensured, and the service life of the cutter holder device for the drill bit is further prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a blade holder apparatus for a drill bit of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic view of a tool holder of the tool holder apparatus for a drill bit of the present invention;
labeled as:
the knife bar 1, the top angle 11,
the knife holder mounting groove 2, the boss 21,
the tool apron 3, the seat body 31, the blade mounting groove 32, the first groove wall 321, the second groove wall 322, the first mounting portion 33, the second mounting portion 34, the first mounting hole 35, the second mounting hole 36, the opening 37, the avoiding hole 38,
Detailed Description
The above-described scheme is further illustrated below with reference to specific examples. It should be understood that these examples are for illustrative purposes and are not intended to limit the scope of the present invention. The conditions used in the examples may be further adjusted according to the conditions of the particular manufacturer, and the conditions not specified are generally the conditions in routine experiments.
Referring to fig. 1 to 3, the present invention provides a tool holder apparatus for a drill, including a tool bar 1, a tool holder mounting groove 2 disposed on the tool bar 1, a tool holder 3 disposed in the tool holder mounting groove 2, and a blade 4 disposed in the tool holder 3; the tool apron 3 comprises a holder body 31, a blade mounting groove 32 arranged in the holder body 31, an arc-shaped first mounting part 33 arranged on one side of the holder body 31, a planar second mounting part 34 connected with the first mounting part 33, first mounting holes 35 arranged at the bottom and two sides of the blade mounting groove 32 and a second mounting hole 36 arranged at the middle position of the blade mounting groove 32; an opening 37 is provided at one side of the blade mounting groove 32, and the opening 37 is different from the first mounting portion 33 and the second mounting portion 34. The arc-shaped first mounting part 33 is combined with the planar second mounting part 34, so that the angle between the tool apron 3 and the axis of the tool bar 1 can be ensured, the positioning is accurate and convenient, the angle between the blade 4 and the blade 41 and the axis of the tool bar 1 is further ensured to be consistent, the angle does not need to be adjusted every time, and the time and the labor are saved; in addition, the first mounting portion 33 in an arc shape and the second mounting portion 34 in a planar shape are combined to reduce the size of the holder 3, so that when the holder mounting groove 2 is formed in the tool bar 1, the size of a pocket to be removed by the tool bar 1 is small, the strength of the tool bar 1 can be ensured, and the service life of the holder device for a drill is further prolonged.
The second mounting hole 36 is located at a side close to the opening 37, the blade 4 has the same shape as the blade mounting groove 32, and the cutting edge of the blade 4 protrudes through the opening 37 of the blade mounting groove 32.
The blade 4 comprises three cutting edges 41, and when the blade 4 rotates 120 degrees along the central line thereof, the three cutting edges 41 rotate 120 degrees synchronously and are respectively positioned at the position of the last cutting edge. Therefore, when one cutting edge 41 of the blades 4 is damaged, the blades can be rotated by 120 degrees to use the next cutting edge, and 3 cutting edges can be arranged on one blade 4, so that the cost is effectively reduced, and the service life of one blade 4 is prolonged.
The angle between the first slot wall 321 and the second slot wall 322 is 146 degrees to 166 degrees. As a preferred embodiment of the present invention, the angle between the first slot wall 321 and the second slot wall 322 is 156 degrees.
The blade bar 1 is provided with a top angle 11 corresponding to the opening 37. The vertex angle 11 plays a role in supporting and protecting the cutting edge 41 of the blade 4, so that the local stress of the cutting edge 41 can be prevented from being excessively large and damaged, and the service life of the blade 4 is prolonged.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above examples are only for illustrating the technical idea and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (7)
1. A kind of tool apron device used for bit, characterized by: the cutter comprises a cutter bar, a cutter seat mounting groove arranged on the cutter bar, a cutter seat arranged in the cutter seat mounting groove and a cutter blade arranged in the cutter seat;
the tool apron comprises a seat body, a blade mounting groove arranged in the seat body, an arc-shaped first mounting part arranged on one side of the seat body, a planar second mounting part connected with the first mounting part, a first mounting hole arranged on one side of the blade mounting groove and a second mounting hole arranged in the middle of the blade mounting groove; an opening is formed in one side of the blade mounting groove, and the opening is different from the first mounting portion and the second mounting portion.
2. A holder apparatus for a drill bit according to claim 1, wherein: the blade mounting groove is three horn shapes, the blade mounting groove with first installation department with one side that the second installation department is the same forms the boss, two lateral walls of blade mounting groove include first cell wall and second cell wall respectively, first cell wall with be the obtuse angle between the second cell wall, first cell wall with second cell wall length is the same.
3. A holder apparatus for a drill bit according to claim 2, wherein: and avoidance holes are respectively formed at the joint of the blade mounting groove and the other side of the blade mounting groove.
4. A holder apparatus for a drill bit according to claim 3, wherein: the second mounting hole is located and is close to open-ended one side, the blade be with the same shape of blade mounting groove, the cutting edge of blade stretches out the opening of blade mounting groove.
5. The holder device for a drill according to claim 4, wherein: the blade comprises three cutting edges, and when the blade rotates 120 degrees along the central line of the blade, the three cutting edges rotate 120 degrees synchronously and are respectively positioned at the position of the last cutting edge.
6. A holder apparatus for a drill bit according to claim 2, wherein: the angle between the first slot wall and the second slot wall is 146 degrees to 166 degrees.
7. A holder apparatus for a drill bit according to claim 2, wherein: the cutter bar is provided with a vertex angle corresponding to the opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121945214.8U CN215509122U (en) | 2021-08-18 | 2021-08-18 | Tool apron device for drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121945214.8U CN215509122U (en) | 2021-08-18 | 2021-08-18 | Tool apron device for drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215509122U true CN215509122U (en) | 2022-01-14 |
Family
ID=79791902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121945214.8U Active CN215509122U (en) | 2021-08-18 | 2021-08-18 | Tool apron device for drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215509122U (en) |
-
2021
- 2021-08-18 CN CN202121945214.8U patent/CN215509122U/en active Active
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