CN215845903U

CN215845903U - Hole digger

Info

Publication number: CN215845903U
Application number: CN202122367405.7U
Authority: CN
Inventors: 朱冬伟; 杨雪丁; 阮俞刚; 翁国飞; 季能
Original assignee: ZHEJIANG XINXING TOOLS CO Ltd
Current assignee: ZHEJIANG XINXING TOOLS CO Ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-02-18
Anticipated expiration: 2031-09-27

Abstract

The utility model discloses a hole digger, which relates to the technical field of hardware tools and comprises a cutter body, wherein a first groove is formed in the cutter body; the knife handle is sleeved outside the knife body, a spring is arranged on the knife handle, and a limiting body is arranged at one end, away from the knife handle, of the spring; wherein, the first groove is matched with the limiting body. The first groove is annular along the radial direction of the cutter body; the first groove is V-shaped along the axial direction of the cutter body; aiming at the technical problem that the service life of the cutter handle of the hole digger is short, the utility model has the technical effect that the service life of the cutter handle can be prolonged.

Description

Hole digger

Technical Field

The utility model relates to the technical field of hardware tools, in particular to a hole digger.

Background

The hole digger is an instrument that is used for the trompil, general hole digger includes integrated into one piece's cutter body and handle of a knife, make the hole digger have the rigidity strong, advantages such as machining precision is high and installation accuracy is high, however, the cutter body can produce wearing and tearing at the in-process of cutting, after cutting the certain time, cutter body wearing and tearing excessively need to be changed, integrated into one piece's hole digger just need to be changed cutter body and handle of a knife together, the handle of a knife that will not wear and tear is changed together, can lead to handle of a knife low in service life, thereby increase cost, and, change the hole digger of different specifications, need with whole hole digger clamping once more on the lathe, and reposition, lead to the clamping inefficiency, and then lead to production efficiency low.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

Aiming at the technical problem that the service life of a cutter handle of the hole digger is short, the utility model provides the hole digger which can prolong the service life of the cutter handle.

2. Technical scheme

In order to solve the problems, the technical scheme provided by the utility model is as follows:

a hole cutter comprising:

the cutter body is provided with a first groove;

the cutter handle is sleeved outside the cutter body, a spring is arranged on the cutter handle, and a limiting body is arranged at one end, far away from the cutter handle, of the spring;

the first groove is matched with the limiting body.

Optionally, along the radial direction of the cutter body, the first groove is annular in shape.

Optionally, along the axial direction of the cutter body, the first groove is in a V shape.

Optionally, the limiting body is a spheroid.

Optionally, along the radial direction of the tool holder, the tool holder is triangular, circular or rectangular in shape.

Optionally, the cutter body is uniformly provided with second grooves, the cutter handle is uniformly provided with protrusions matched with the second grooves, or the cutter body is uniformly provided with protrusions, and the cutter handle is uniformly provided with second grooves matched with the protrusions.

Optionally, the cutter body includes the cutter body, cutter body one end is equipped with the cutting edge, the cutter body other end be equipped with handle of a knife complex assembly portion, recess one is located on the assembly portion.

Optionally, a hole is formed in the handle, and the spring and the limiting body are located in the hole.

Optionally, the assembly portion comprises a first assembly portion matched with the cutter handle and a second assembly portion matched with the cutter handle, the first assembly portion is far away from one end of the second assembly portion and connected with the cutter body, and the first groove is located on the second assembly portion.

Optionally, the aperture is U-shaped.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects: because recess one and spacing body cooperation for the handle of a knife has both restricted the axial motion of cutter body, has restricted the radial motion of cutter body again, the transmission moment of torsion of being convenient for, moreover, through the compression and the extension of spring, make recess one and spacing body separation and cooperation, realize the quick assembly disassembly of cutter body and handle of a knife, when the cutter body takes place to damage unable the use, only need change the cutter body of damage, increase the life of handle of a knife, thereby reduce the cost, and simultaneously, because the handle of a knife need not to be changed, the handle of a knife need not to separate with mechanical equipment promptly, make the hole digger need not the relocation, be favorable to improving production efficiency.

Drawings

Fig. 1 is a schematic structural view of a hole cutter according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a cutter body according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view A-A according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a tool shank according to an embodiment of the utility model;

FIG. 5 is a cross-sectional view of B-B according to an embodiment of the present invention;

in the figure: 1. a cutter body; 11. a cutter body; 12. a cutting edge; 13. an assembling portion; 131. a first assembling part; 1311. a second groove; 132. a second assembling part; 1321. a first groove; 2. a knife handle; 21. a protrusion; 22. an aperture; 3. a spring; 4. a limiting body.

Detailed Description

For a further understanding of the present invention, reference will now be made in detail to the embodiments illustrated in the drawings.

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. The terms first, second, and the like in the present invention are provided for convenience of describing the technical solution of the present invention, and have no specific limiting effect, but are all generic terms, and do not limit the technical solution of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The technical solutions in the same embodiment and the technical solutions in different embodiments can be arranged and combined to form a new technical solution without contradiction or conflict, and the technical solutions are within the scope of the present invention.

Example 1

With reference to fig. 1-5, the present embodiment provides a hole cutter including:

the cutter body 1 is provided with a first groove 1321;

the knife handle 2 is sleeved outside the knife body 1, the knife handle 2 is provided with a spring 3, and one end, away from the knife handle 2, of the spring 3 is provided with a limiting body 4;

wherein, the first groove 1321 is matched with the limiting body 4.

Specifically, one end of the cutter body 1 is used for cutting, the other end of the cutter body 1 is used for being matched with the cutter handle 2, and the cutter body 1 is used for bearing the first groove 1321 to improve the stability of the first groove 1321; one end of the knife handle 2 is used for being matched with the knife body 1, the other end of the knife handle 2 is used for being matched with mechanical equipment such as a drilling machine, an electric drill and the like, and the knife handle 2 is used for supporting the spring 3 so as to ensure the stability of the spring 3; the spring 3 is used for connecting the tool handle 2 and the limiting body 4, and the distance between the tool handle 2 and the limiting body 4 is changed through the compression and extension of the spring 3; because recess 1321 and spacing body 4 cooperation, make handle of a knife 2 both restrict the axial motion of cutter body 1, the radial motion of cutter body 1 has been restricted again, the transmission moment of torsion of being convenient for, moreover, through the compression and the extension of spring 3, make recess 1321 and spacing body 4 separation and cooperation, realize the quick assembly disassembly of cutter body 1 and handle of a knife 2, when cutter body 1 takes place to damage and can't use, only need to change cutter body 1 that damages, increase the life of handle of a knife 2, thereby reduce the cost, and simultaneously, because handle of a knife 2 need not to be changed, handle of a knife 2 need not to separate with mechanical equipment promptly, make the hole digger need not the relocation, be favorable to improving production efficiency.

Further, in the radial direction of the cutter body 1, the first recess 1321 is annular in shape.

Specifically, the annular groove 1321 is convenient to be matched with the limiting body 4, when the cutter body 1 is matched with the cutter handle 2, the cutter handle 2 does not need to be rotated to enable the groove 1321 to be matched with the limiting body 4, the matching efficiency of the groove 1321 and the limiting body 4 is improved, and the annular groove 1321 is used for limiting the axial movement of the cutter body 1 to prevent the cutter body 1 and the cutter handle 2 from being separated from each other.

Further, the first recess 1321 is V-shaped along the axial direction of the cutter body 1.

Specifically, the V-shaped opening of the first groove 1321 is large, so that the first groove 1321 and the limiting body 4 can be conveniently separated and matched, and the dismounting efficiency of the cutter body 1 and the cutter handle 2 is improved.

Further, the limiting body 4 is a spheroid.

Specifically, the spheroid makes the surface of spacing body 4 mellow and smooth, the separation and the cooperation of spacing body 4 and recess 1321 of being convenient for to increase cutter body 1 and handle of a knife 2's dismouting efficiency, wherein, the material of spacing body 4 can be for chromium stainless steel or chromium nickel stainless steel etc. chromium stainless steel makes spacing body 4's corrosion resistance good, and chromium nickel stainless steel not only makes spacing body 4's corrosion resistance good but also makes spacing body 4's intensity high.

Further, along the radial direction of the tool holder 2, the tool holder 2 is triangular, circular or rectangular.

Specifically, the shape of the tool shank 2 depends on the mechanical equipment matched with the tool shank 2, and can be triangular, circular or rectangular, and the like, and the tapper can be adapted to the mechanical equipment by changing the shape of the tool shank 2.

Further, the cutter body 1 is uniformly provided with a second groove 1311, the cutter handle 2 is uniformly provided with a second protrusion 21 matched with the second groove 1311, or the cutter body 1 is uniformly provided with a second protrusion 21, and the cutter handle 2 is uniformly provided with a second groove 1311 matched with the second protrusion 21.

Specifically, the cutter body 1 is used for bearing the second grooves 1311 to increase the stability of the second grooves 1311, and the second grooves 1311 are uniformly distributed on the cutter body 1, so that the cutter body 1 has certain uniformity, the number of the second grooves 1311 is not limited, and the second grooves 1311 can be determined by comprehensive consideration of factors such as machining and manufacturing and cost; the tool shank 2 is used for bearing the protrusions 21 to increase the stability of the protrusions 21, the protrusions 21 are uniformly distributed on the tool shank 2, the tool shank 2 can have certain uniformity, and the number of the protrusions 21 is equal to that of the second grooves 1311; the second groove 1311 is matched with the protrusion 21 to limit radial movement of the cutter body 1, so that torque can be transmitted conveniently; the protrusion 21 may be provided on the tool body 1, and the second recess 1311 may be provided on the holder 2.

Further, the cutter body 1 comprises a cutter body 11, one end of the cutter body 11 is provided with a cutting edge 12, the other end of the cutter body 11 is provided with an assembling portion 13 matched with the cutter handle 2, and the first groove 1321 is located on the assembling portion 13.

Specifically, the cutter body 11 is used for connecting the cutting edge 12 and the assembling portion 13, so that the cutting edge 12 is used for cutting, the assembling portion 13 is used for being matched with the cutter handle 2, the assembling portion 13 is used for bearing the first groove 1321, the movement of the assembling portion 13 is limited through the matching of the first groove 1321 on the assembling portion 13 and the limiting body 4 on the cutter handle 2, and the movement of the cutter body 1 is limited.

Further, a hole 22 is formed in the tool shank 2, and the spring 3 and the limiting body 4 are located in the hole 22.

Specifically, the hole 22 is used for accommodating the spring 3 and the limiting body 4, so that the spring 3 and the limiting body 4 can extend and contract along the axial direction of the hole 22.

Further, the assembling portion 13 includes a first assembling portion 131 matched with the tool holder 2 and a second assembling portion 132 matched with the tool holder 2, which are sequentially arranged, one end of the first assembling portion 131, which is far away from the second assembling portion 132, is connected with the tool body 11, and the first groove 1321 is located on the second assembling portion 132.

Specifically, the first assembling portion 131 is used for connecting the cutter body 11 and the second assembling portion 132, integrity of the first assembling portion 131, the cutter body 11 and the second assembling portion 132 is improved, the first assembling portion 131 and the second assembling portion 132 are matched with the cutter handle 2, double-gear positioning is achieved, matching tightness is improved, matching accuracy is improved, meanwhile, the second assembling portion 132 is used for bearing the first groove 1321, movement of the assembling portion 13 is limited through matching of the first groove 1321 in the second assembling portion 132 and the limiting body 4 in the cutter handle 2, and therefore movement of the cutter body 1 is limited.

Further, the hole 22 is U-shaped.

Specifically, the U-shape can reduce the size of the opening of the hole 22, prevent the stopper 4 from being detached from the inside of the hole 22 and entering the inside of the holder 2, and cause the first recess 1321 on the cutter body 1 and the stopper 4 on the holder 2 to be unable to be matched, thereby causing the cutter body 1 and the holder 2 to be unable to be matched.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the utility model, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the utility model.

Claims

1. A hole cutter, comprising:

the cutter body is provided with a first groove;

the first groove is matched with the limiting body.

2. The hole cutter according to claim 1, wherein said first recess is annular in shape in a radial direction of said cutter body.

3. The hole cutter according to claim 1, wherein said first recess is V-shaped in an axial direction of said cutter body.

4. A hole cutter as claimed in any one of claims 1 to 3, wherein the stop is a spheroid.

5. A hole cutter as claimed in any one of claims 1 to 3, wherein the shank is triangular, circular or rectangular in shape in the radial direction of the shank.

6. The hole opener according to any one of claims 1 to 3, wherein the cutter body is uniformly provided with two grooves, the cutter handle is uniformly provided with two protrusions engaged with the two grooves, or the cutter body is uniformly provided with two protrusions, and the cutter handle is uniformly provided with two grooves engaged with the protrusions.

7. The hole cutter according to any one of claims 1-3, wherein said cutter body comprises a cutter body, one end of said cutter body is provided with a cutting edge, the other end of said cutter body is provided with an assembling portion engaged with said shank, and said recess is located on said assembling portion.

8. The hole cutter according to any one of claims 1-3, wherein a hole is provided in said shank, and said spring and said stopper are both located in said hole.

9. The hole cutter according to claim 7, wherein said assembly portion comprises a first assembly portion engaged with said holder and a second assembly portion engaged with said holder, said first assembly portion being connected to said cutter body at an end thereof remote from said second assembly portion, said first recess being located on said second assembly portion.

10. The hole cutter of claim 8, wherein the hole is U-shaped.