CN211101749U - Hole saw - Google Patents
Hole saw Download PDFInfo
- Publication number
- CN211101749U CN211101749U CN201922273454.7U CN201922273454U CN211101749U CN 211101749 U CN211101749 U CN 211101749U CN 201922273454 U CN201922273454 U CN 201922273454U CN 211101749 U CN211101749 U CN 211101749U
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- base body
- chute
- opening
- steps
- top surface
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Abstract
The utility model relates to a hole saw, which comprises a cylindrical base body with an opening at the bottom, wherein the top surface of the base body is provided with mounting holes, the end part of the opening of the base body is evenly distributed with sawteeth along the circumferential direction, and the cylinder wall of the base body is provided with a plurality of chutes which run through the cylinder wall; the side of the chute close to the top surface of the base body is stepped, so that the side of the chute close to the top surface of the base body is provided with a plurality of top steps. The utility model discloses an increase the top step on the chute of base member section of thick bamboo wall, after drilling is accomplished, when using the pinch bar to prize the waste material from the chute like this, through a support point of top step increase, can utilize the principle of lever to easily take out the waste material from the chute.
Description
Technical Field
The utility model relates to a hole saw belongs to hardware and tools technical field.
Background
Hole saws are a cutting tool commonly used in the finishing industry to cut round holes in materials such as wood, plastic, and even metal and fiberglass. The hole saw is generally provided with a cylindrical base body with an opening at one end, a mounting hole for connecting a drill bit is formed in the bottom surface of the base body, and saw teeth are uniformly distributed at the upper end of the wall of the base body along the circumferential direction.
As far as the applicant is aware, in the prior art, for example, chinese patent publication No. CN109070244A (named "hole saw assembly", published as 12/21/2018), the cylindrical wall of the basic body is provided with a plurality of chutes which penetrate through the cylindrical wall and discharge the chips generated by cutting to the outside of the basic body during drilling to prevent the chips from being stuck during drilling. However, after the hole saw drills a hole in a material such as wood or plastic, the cut cylindrical material (hereinafter, referred to as scrap) is embedded in the base body of the hole saw and is not easily taken out.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: to provide a hole saw capable of taking out a waste material after cutting with a small labor.
In order to solve the technical problem, the utility model provides a technical scheme is: a hole saw comprises a cylindrical base body with an opening at the bottom, wherein a mounting hole is formed in the top surface of the base body, sawteeth are uniformly distributed at the end part of the opening of the base body along the circumferential direction, and a plurality of inclined grooves penetrating through the cylinder wall are formed in the cylinder wall of the base body; the side of the chute close to the top surface of the base body is stepped, so that the side of the chute close to the top surface of the base body is provided with a plurality of top steps.
The utility model adds the top step on the chute of the wall of the base body cylinder, thus when the waste material is pried out from the chute by using the prying bar after the drilling is finished, a supporting point is added through the top step, and the waste material can be easily taken out from the chute by utilizing the lever principle; when in use, the waste can be pried out gradually towards the opening direction of the substrate for a plurality of times. And the chute among the prior art is the straight flute, does not have the top step, like this after drilling, even insert a pinch bar to the chute in, because the effort is difficult for applying in the chute to the pinch bar, also relatively difficultly when consequently prying out the waste material.
The further improvement of the technical scheme is as follows: one side of the chute, which is close to the bottom opening, is also in a step shape, so that one side of the chute, which is close to the bottom opening, is provided with a plurality of bottom steps, the bottom steps correspond to the top steps one to one, and the bottom steps and the corresponding top steps are distributed along the axis direction of the base body. When using the crowbar to prize the waste material out from the chute like this, can increase the home range of crowbar under the prerequisite that does not increase the whole width of chute, consequently can be more convenient for take out the waste material from the chute under the prerequisite of guaranteeing base member intensity.
Drawings
The present invention will be further explained with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
Examples
The hole saw of the embodiment, as shown in fig. 1, includes a cylindrical base 1 with an opening at the bottom, a mounting hole 4 is provided on the top surface 3 of the base 1, sawteeth 5 are uniformly distributed on the opening end of the base 1 along the circumferential direction, and a plurality of chutes 2 penetrating through the cylinder wall are provided on the cylinder wall of the base 1; the side of the chute 2 adjacent to the top surface 3 of the substrate is stepped so that the side of the chute 2 adjacent to the top surface of the substrate has a plurality of top steps 7. Thus, after the drilling is finished, the waste can be pried out gradually towards the opening direction of the base body for a plurality of times by taking the top step 7 as a supporting point.
The number of the inclined grooves 2 on the base body 1 can be determined according to the specific size and other conditions of the hole saw, and can be generally set to be 2-4, so that the scraps can be discharged in the drilling process conveniently, preferably, the inclined grooves are located at the end far away from the bottom opening and gradually deviate towards the rear of the circumferential direction of the hole saw during operation, and the inclined grooves are reasonably arranged according to the operation direction of the hole saw, so that the scraps can be discharged conveniently.
The embodiment can be further improved as follows: one side of the chute 2 close to the bottom opening is also in a step shape, so that one side of the chute 2 close to the bottom opening is provided with a plurality of bottom steps 6, the bottom steps 6 are in one-to-one correspondence with the top steps 7, and the bottom steps 6 and the corresponding top steps 7 are distributed along the axial direction of the base body 1. When using the crowbar to prize the waste material out from the chute like this, can increase the home range of crowbar under the prerequisite that does not increase the whole width of chute, consequently can be more convenient for take out the waste material from the chute under the prerequisite of guaranteeing base member intensity.
The present invention is not limited to the specific technical solutions described in the above embodiments, and other embodiments can be provided in addition to the above embodiments. It should be understood by those skilled in the art that any modifications, equivalent substitutions, improvements and the like that are made within the spirit and principle of the present invention are within the scope of the present invention.
Claims (2)
1. A hole saw comprises a cylindrical base body with an opening at the bottom, wherein a mounting hole is formed in the top surface of the base body, sawteeth are uniformly distributed at the end part of the opening of the base body along the circumferential direction, and a plurality of inclined grooves penetrating through the cylinder wall are formed in the cylinder wall of the base body; the method is characterized in that: the side of the chute close to the top surface of the base body is stepped, so that the side of the chute close to the top surface of the base body is provided with a plurality of top steps.
2. The hole saw of claim 1, wherein: one side of the chute, which is close to the bottom opening, is also in a step shape, so that one side of the chute, which is close to the bottom opening, is provided with a plurality of bottom steps, the bottom steps correspond to the top steps one to one, and the bottom steps and the corresponding top steps are distributed along the axis direction of the base body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922273454.7U CN211101749U (en) | 2019-12-18 | 2019-12-18 | Hole saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922273454.7U CN211101749U (en) | 2019-12-18 | 2019-12-18 | Hole saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211101749U true CN211101749U (en) | 2020-07-28 |
Family
ID=71687842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922273454.7U Active CN211101749U (en) | 2019-12-18 | 2019-12-18 | Hole saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211101749U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112060169A (en) * | 2020-09-02 | 2020-12-11 | 李杨 | Tire processing device and method |
-
2019
- 2019-12-18 CN CN201922273454.7U patent/CN211101749U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112060169A (en) * | 2020-09-02 | 2020-12-11 | 李杨 | Tire processing device and method |
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