CN215199794U

CN215199794U - Hole digger

Info

Publication number: CN215199794U
Application number: CN202121369346.0U
Authority: CN
Inventors: 周益程
Original assignee: Zhejiang Enguang Diamond Tools Co ltd
Current assignee: Zhejiang Enguang Diamond Tools Co ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2021-12-17
Anticipated expiration: 2031-06-21

Abstract

The application discloses a hole digger, which relates to the technical field of hole digger and comprises a cover body, a connecting shaft relatively fixed with the cover body and a positioning drill; the cover body comprises a cutting part for cutting an object to be cut, and the connecting shaft is provided with an insertion hole for inserting the upper end of the positioning drill; the side surface of one end of the positioning drill inserted into the jack at least comprises a surface which is abutted against the hole wall of the jack so as to limit the positioning drill to rotate relative to the cover body; and a magnet is arranged between one end of the positioning drill inserted into the jack and the connecting shaft so as to realize detachable connection and fixation. This application has the effect that makes things convenient for the cover body or the location to bore to change.

Description

Hole digger

Technical Field

The application relates to the technical field of tapping equipment, in particular to a tapper.

Background

The hole digger is also called a hole saw or a hole saw, which refers to a special saw cutting circular saw for processing circular holes in modern industry or engineering, and can conveniently cut various plates such as copper, iron, stainless steel, organic glass, wood plates and the like.

In the prior art, a chinese patent document with an authorization publication number of CN205551565U discloses a hole digger, which includes a cylindrical cover body, a connecting shaft fixedly connected with the cylindrical cover body, and a positioning drill. The threaded hole is formed in the side wall of the connecting shaft, the bolt in threaded fit with the threaded hole is connected to the connecting shaft in a threaded mode, the positioning drill is tightly abutted to the bolt through screwing the bolt, and therefore the positioning drill and the cylindrical cover body are fixed relatively. The specific working conditions are as follows: when the cut object is cut, the positioning drill is firstly abutted against the cut object and punches the positioning hole, then the cut object is cut by the lower end of the cylindrical cover body, and the cylindrical cover body is not easy to slip relative to the cut object.

However, the inventor believes that when the cylindrical cover body or the positioning drill is used, one of the cylindrical cover body or the positioning drill is damaged, the cylindrical cover body or the positioning drill needs to be replaced, bolts need to be screwed or loosened, operation is troublesome, and improvement is needed.

SUMMERY OF THE UTILITY MODEL

In order to facilitate the replacement of the positioning drill and the cover body, the application provides a hole digger.

The application provides a hole digger adopts following technical scheme:

a hole digger comprises a cover body, a connecting shaft and a positioning drill, wherein the connecting shaft is fixed relative to the cover body; the cover body comprises a cutting part for cutting an object to be cut, and the connecting shaft is provided with a jack for inserting the upper end of the positioning drill; the side surface of one end, inserted into the jack, of the positioning drill at least comprises a surface which is abutted against the hole wall of the jack so as to limit the rotation of the positioning drill relative to the cover body; and a magnet is arranged between one end of the positioning drill inserted into the jack and the connecting shaft so as to realize detachable connection and fixation.

By adopting the technical scheme, when the positioning drill or the cover body needs to be taken down, the connecting shaft only needs to be stabilized, then the force far away from the jack is applied to the positioning drill, and the positioning drill and the cover body can be separated after the attraction generated by the magnet is overcome. When the positioning drill and the cover body need to be installed, the positioning drill is only required to be inserted into the jack, and the positioning drill and the connecting shaft are basically stable under the acting force of the magnet, so that the connection of the positioning drill and the cover body is realized. This application has the effect that convenient location bored or connecting axle was changed.

Optionally, the magnet is fixedly arranged at the bottom or side wall of the slot, and the upper end of the positioning drill is made of metal capable of being attracted by the magnet.

Through adopting above-mentioned technical scheme, fix magnet in the jack, only bore the upper end at the location and insert the back in the jack, the location bores and just can receive the appeal, can not influence the alignment of location brill and jack.

Optionally, the magnet is fixedly arranged at the upper end of the positioning drill, and the connecting shaft is made of metal capable of being attracted by the magnet.

Through adopting above-mentioned technical scheme, bore upper end fixed connection magnet at the location and compare at jack internal fixed connection magnet, it is simpler on manufacturing process.

Optionally, the cross section of the upper end portion of the positioning drill is arranged in a polygonal shape, and the insertion hole is arranged corresponding to the positioning drill.

Through adopting above-mentioned technical scheme, polygonal setting, the location is bored when rotating hand the inside is more, the location that is favorable to bores the life of upper end part and jack.

Optionally, the cross section of the upper end part of the positioning drill is hexagonal.

By adopting the technical scheme, the hexagon is set to be the best scheme obtained by combining the factors of service life, convenience in installation and the like.

Optionally, a protrusion is fixed to a side wall of the positioning drill, and the insertion hole includes a hole slot for inserting the protrusion.

Through adopting above-mentioned technical scheme, adopt the cooperation of lug and hole groove, better assurance location is bored and is rotated with the cover body synchronous.

Optionally, the positioning drill and the cutting part are coated with a diamond particle layer.

Through adopting above-mentioned technical scheme, the increase of diamond particle layer is convenient for better cutting the trompil to glass.

Optionally, a return spring for ejecting the waste materials of the cut materials is fixedly arranged in the cover body.

Through adopting above-mentioned technical scheme, after the waste material of being cut the thing is amputated, under reset spring's effect, the waste material is ejecting to the cover body is outer, has played the effect of automatic ejecting waste material, is favorable to the rapid operation.

Optionally, the cutting part comprises a plurality of teeth, and the teeth are distributed along the circumference.

Through adopting above-mentioned technical scheme, be applicable to cutting timber or metal, the cutting part can be made by the higher steel of intensity.

To sum up, this application utilizes magnetism to inhale the mode and realizes the separation or the connection of location brill and connecting axle through setting up magnet, has the effect of convenient change, and the mode of this kind of magnetism is inhaled also can satisfy the work demand of the normal trompil of hole digger.

Drawings

FIG. 1 is a schematic structural diagram of a first embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of a first embodiment of the present application;

FIG. 3 is a schematic sectional view of a part of the structure of a connecting shaft and a positioning drill in the first embodiment of the present application;

FIG. 4 is an exploded view of the first embodiment of the present application;

FIG. 5 is a schematic cross-sectional view of a salient magnet disposed on a sidewall of a receptacle according to an embodiment of the present application;

FIG. 6 is a schematic cross-sectional view of a second embodiment of the present application;

fig. 7 is a schematic structural diagram of a third embodiment of the present application.

Reference numerals: 1. a cover body; 2. a connecting shaft; 3. positioning a drill; 4. an upper end housing; 5. a cutting section; 6. a jack; 7. a bump; 8. a hole groove; 9. teeth; 10. a magnet; 11. a return spring.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The first embodiment is as follows:

the embodiment discloses a hole digger which is suitable for cutting glass. Referring to fig. 1, the device comprises a cover body 1, a connecting shaft 2 and a positioning drill 3. The cover 1 includes an upper housing 4 located above and a cutting portion 5 located below for cutting an object to be cut. The connecting shaft 2 is used for being connected with the tapping machine, the connecting shaft 2 and the upper end shell 4 are integrally connected and fixed, and when the connecting shaft 2 rotates along the axis, the cover body 1 rotates synchronously.

Referring to fig. 2, the lower end of the connecting shaft 2 is provided with an insertion hole 6, the upper end part of the positioning drill 3 is inserted into the insertion hole 6, and the positioning drill 3 and the cover body 1 rotate synchronously. The specific principle is as follows:

the cross section of the upper end part of the positioning drill 3 can be polygonal, and the insertion hole 6 can be inserted by the upper end part of the positioning drill 3.

Referring to fig. 2 and 3, in the present embodiment, the cross section of the upper end portion of the positioning drill 3 is a hexagon, and the insertion hole 6 is disposed corresponding to the upper end portion of the positioning drill 3. When the connecting shaft 2 rotates along the axis, the positioning drill 3 is inserted into the side wall of one end of the insertion hole 6 to be abutted against the hole wall of the insertion hole 6, so that the positioning drill 3 and the cover body 1 rotate synchronously.

Referring to fig. 4, the positioning drill 3 may also be provided with a protrusion 7 fixed on the side wall, and the insertion hole 6 correspondingly includes a hole slot 8 for inserting the protrusion 7.

Referring to fig. 2, the positioning drill 3 is detachably connected and fixed with the connecting shaft 2. In this embodiment, the slot bottom of the insertion hole 6 is fixedly connected with the magnet 10, and the fixing connection mode may be a snap fit or an adhesive fixation. The upper end of the positioning drill 3 is made of metal capable of being attracted by the magnet 10, such as iron, nickel, cobalt and other alloys.

Referring to fig. 5, in other embodiments, the magnet 10 may be fixed in the sidewall of the insertion hole 6, after the upper end of the positioning drill 3 is inserted into the insertion hole 6, and after the sidewall of the positioning drill 3 receives the attraction force of the magnet 10, the sidewall of the positioning drill 3 collides with the magnet 10 to achieve that the positioning drill 3 and the connecting shaft 2 are relatively stable. The magnet 10 may be provided in plurality, as the case requires.

In other embodiments, the magnet 10 may be fixed to the upper end of the positioning drill 3, and the connecting shaft 2 may be made of a metal that can be attracted by the magnet 10, such as an alloy of iron, nickel, cobalt, or the like.

Referring to fig. 1 and 2, the lower end of the positioning drill 3 extends to a position below the cutting part 5, and diamond particle layers are coated on the lower ends of the positioning drill 3 and the cutting part 5 and the side walls close to the lower ends, so that the effect of conveniently drilling the glass is achieved.

The specific tapping conditions are as follows:

drive the hole digger through the tapping machine and rotate, it drills to glass to fix a position earlier 3, then 5 trompils to glass of cutting part, and the setting of fixing a position 3 of boring has the effect of stabilizing the hole digger.

The concrete effects are as follows:

when the positioning drill 3 needs to be taken down, acting force which is far away from each other along the axis of the positioning drill 3 is applied to the positioning drill 3 and the cover body 1, and as long as the acting force is larger than the attraction force generated by the magnet 10, the positioning drill 3 and the cover body 1 can be quickly separated. When the positioning drill 3 needs to be installed, only the upper end of the positioning drill 3 needs to be inserted into the insertion hole 6, and the positioning drill 3 and the cover body 1 are not easy to separate under the action force of the magnet 10. Compared with the mode of originally adopting the bolt to fix and position the drill 3, the embodiment of the application is more convenient.

Example two:

referring to fig. 6, different from the first embodiment, a return spring 11 is disposed in the cover body 1, one end of the return spring 11 is fixed at the bottom of the cover body 1, and the return spring 11 is sleeved on the positioning drill 3. The return spring 11 extends spirally along the axial lead direction of the positioning drill 3, and the lower end of the return spring 11 extends out of the opening end of the cover body 1. After the hole cutter completes hole cutting on the glass, the reset spring 11 exerts a force far away from the connecting shaft 2 on the cut glass, and the effect of ejecting the waste materials of the cut materials is achieved.

Example three:

referring to fig. 7, the hole cutter disclosed in the present embodiment is suitable for cutting metal and wood, unlike the embodiment. The lower end of the positioning drill 3 is free of a diamond particle layer, the cutting part 5 comprises a plurality of teeth 9, and the teeth 9 are distributed along the circumference. The cutting portion 5 may be made of steel having a high strength.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A hole digger comprises a cover body (1), a connecting shaft (2) fixed relative to the cover body (1) and a positioning drill (3); the cover body (1) comprises a cutting part (5) for cutting an object to be cut, and the connecting shaft (2) is provided with an insertion hole (6) for inserting the upper end of the positioning drill (3); the method is characterized in that: the side surface of one end, inserted into the jack (6), of the positioning drill (3) at least comprises a surface which is abutted against the hole wall of the jack (6) so as to limit the rotation of the positioning drill (3) relative to the cover body (1); and a magnet (10) is arranged between one end of the positioning drill (3) inserted into the insertion hole (6) and the connecting shaft (2) so as to realize detachable connection and fixation.

2. The hole cutter according to claim 1, wherein: the magnet (10) is fixedly arranged at the bottom or the side wall of the insertion hole (6), and the upper end part of the positioning drill (3) is made of metal which can be attracted by the magnet (10).

3. The hole cutter according to claim 1, wherein: the magnet (10) is fixedly arranged at the upper end of the positioning drill (3), and the connecting shaft (2) is made of metal capable of being attracted by the magnet (10).

4. The hole cutter according to any one of claims 1-3, wherein: the cross section of the upper end part of the positioning drill (3) is arranged in a polygonal mode, and the insertion hole (6) and the positioning drill (3) are correspondingly arranged.

5. The hole cutter according to claim 4, wherein: the cross section of the upper end part of the positioning drill (3) is arranged in a hexagon shape.

6. The hole cutter according to any one of claims 1-3, wherein: the side wall of the positioning drill (3) is fixed with a convex block (7), and the jack (6) comprises a hole groove (8) for inserting the convex block (7).

7. The hole cutter according to claim 1, wherein: the positioning drill (3) and the cutting part (5) are coated with diamond particle layers.

8. The hole cutter according to claim 1, wherein: a return spring (11) for ejecting the waste of the cut object is fixedly arranged in the cover body (1).

9. The hole cutter according to claim 1, wherein: the cutting part (5) comprises a plurality of teeth (9), and the teeth (9) are distributed along the circumference.