CN218785679U

CN218785679U - Stable electric hammer drill bit

Info

Publication number: CN218785679U
Application number: CN202223183065.3U
Authority: CN
Inventors: 林卫东; 李伟
Original assignee: Zhejiang Tiancheng Zhenfeng Tools Co ltd
Current assignee: Zhejiang Tiancheng Precision Tools Co.,Ltd.
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-04-04
Anticipated expiration: 2032-11-29

Abstract

The application relates to an electric hammer drill bit, which relates to the technical field of electric hammer drill bits; the drill rod comprises a drill handle and a drill rod arranged on the drill handle, wherein a cutter head is arranged at one end, far away from the drill handle, of the drill rod; the drill rod is rotatably provided with a positioning assembly, the positioning assembly and the drill rod are coaxially arranged, and the positioning assembly is arranged outside the cutter head; the positioning assembly is used for contacting with a material to be punched. This application comes the tool bit to restrict through the reference column to improved the stability of tool bit during operation of driling, made things convenient for going on of the operation of punching.

Description

Stable electric hammer drill bit

Technical Field

The application relates to the technical field of electric hammer drill bits, especially, relate to a stable form electric hammer drill bit.

Background

The electric hammer is an electric tool which can rotate and impact, is mainly used for punching concrete, stones and the like and removing walls, and a transmission mechanism of the electric hammer drives the drill bit to rotate and simultaneously has a reciprocating hammering motion perpendicular to the rotating surface of the drill bit, so that the punching operation of a material surface is realized.

In view of the above, the inventors found that when the drill bit is aligned with the material surface to perform the drilling operation, the electric hammer drill bit may sway to some extent, thereby affecting the stability of the drilling operation.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem of stability when electric hammer drill drills, this application provides a stable form electric hammer drill.

The application provides a stable form electric hammer drill bit adopts following technical scheme:

a stable electric hammer drill bit comprises a drill handle and a drill rod arranged on the drill handle, wherein a tool bit is arranged at one end, far away from the drill handle, of the drill rod; the drill rod is rotatably provided with a positioning assembly, the positioning assembly and the drill rod are coaxially arranged, and the positioning assembly is arranged outside the cutter head; the positioning assembly is used for contacting with a material to be punched.

Through adopting above-mentioned technical scheme, when punching the operation, aim at the tool bit with waiting to punch the material earlier, through compressing tightly the reference column on waiting to punch the material face, just can come to restrict the tool bit through the reference column this moment to improved the stability of tool bit when carrying out the drilling work, made things convenient for going on of staff's operation of punching, ensured the precision of punching of waiting to punch the material.

Optionally, the positioning column is rotatably disposed on the positioning seat, the positioning column rotates in a direction away from or close to the drill rod, a fastening piece is connected to the positioning seat in a threaded manner, and the positioning column is fixed to the positioning seat through the fastening piece.

Through adopting above-mentioned technical scheme, when the angle between reference column and the drilling rod is adjusted according to actual conditions to needs, remove the restriction to the reference column through the unscrewing fastener earlier, after turning over the reference column to the direction of keeping away from or being close to the drilling rod to suitable position, just can realize spacing to the reference column through the fastener of screwing, just can realize the supporting effect to the drill bit through the reference column this moment to can be applicable to the different environment of punching, enlarged the application scope of reference column.

Optionally, a waist-shaped hole is formed in the outer side wall of the positioning seat, the fastening piece penetrates through the waist-shaped hole, and the fastening piece slides along the extending direction of the waist-shaped hole.

Through adopting above-mentioned technical scheme, after the angle modulation of reference column finishes, through with the fastener along waist type hole extending direction cunning to with reference column pivot contact each other, through screwing the fastener on the positioning seat this moment to realized fixing the regulation of the arbitrary angle of reference column, ensured the fixed effect of fastener to the reference column.

Optionally, a base is rotatably arranged on the drill rod, a telescopic rod extending along the length direction of the drill handle is arranged on the base, and the telescopic rod is used for contacting with the positioning seat and pressing the positioning column onto the surface of the material to be punched.

By adopting the technical scheme, the telescopic rod is adjusted until the positioning column is in contact with the surface of the material to be punched, and after the positioning column is tightly pressed on the surface of the material to be punched, the punching operation of the material to be punched can be carried out; in the punching operation process, the base moves towards the direction close to the positioning column along with the drill rod, and the telescopic rod is compressed, so that the positioning column is pressed on the surface of a material to be punched through the telescopic rod, and the stability of the positioning column in the punching process is improved; when the telescopic rod reaches the maximum compression range, the base can be prevented from further moving through the mutual matching of the telescopic rod and the positioning column, so that the situation that the base collides with the positioning seat can be prevented, and the service life of the positioning seat is prolonged.

Optionally, a groove is formed in the outer side wall, close to the drill shank, of the drill rod, a rolling bearing which is coaxially arranged with the drill rod is arranged on the base, the rolling bearing is arranged in the groove, and the base is rotatably arranged on the drill rod through the rolling bearing.

Through adopting above-mentioned technical scheme, when punching the operation, antifriction bearing will with the internal surface of recess mutual contact to can realize the supporting role to the base, improve the stability of base.

Optionally, a reset spring is arranged inside the telescopic rod, the reset spring stretches along the length direction of the drill rod, one end of the reset spring is fixedly connected with the telescopic rod, and the other end of the reset spring is abutted against the base.

Through adopting above-mentioned technical scheme, when the telescopic link was compressed by the base, reset spring will be compressed by the telescopic link, and after the operation of punching was accomplished and was taken out the drilling rod from waiting to punch the material face, the telescopic link will be extended to the direction of keeping away from the tool bit under reset spring's elastic force effect to can realize automatic re-setting, made things convenient for going on of follow-up operation of punching.

Optionally, the end of the positioning column is rotatably provided with a support leg, and the support leg rotates in a direction away from or close to the positioning seat.

Through adopting above-mentioned technical scheme, after finishing the angle modulation with the reference column, through keeping the stabilizer blade to keeping away from or being close to the rotation of positioning seat to the stabilizer blade and waiting to punch the material face and keep the parallel state to can ensure the stabilizer blade and to the supporting effect of reference column, further ensure the stability of reference column.

Optionally, be provided with double helix type chip groove on the lateral wall of drilling rod, double helix type chip groove extends along the length direction of drilling rod.

Through adopting above-mentioned technical scheme, at the in-process of drilling, set up to the space that the double helix type chip groove of double flute has increased the chip removal to make the going on that drilling work can be smooth.

In summary, the present application includes at least one of the following beneficial technical effects:

1. thereby improved the stability that the tool bit carried out drilling operation time, made things convenient for going on of staff's operation of punching, ensured the precision of punching of waiting to punch the material.

2. The double-helix chip removal grooves with double grooves increase the chip removal space, so that the drilling work can be smoothly carried out.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Figure 2 is a partially exploded view of the highlighted drill pipe of figure 1.

Fig. 3 is a cross-sectional view of the salient return spring of fig. 1.

Fig. 4 is an enlarged schematic view of a structure at a in fig. 1.

Description of reference numerals: 1. a drill shank; 10. a drill stem; 101. a base; 102. a groove; 103. double helix type chip grooves; 11. a cutter head; 12. a telescopic rod; 121. a return spring; 2. positioning seats; 200. a fastener; 201. a kidney-shaped hole; 21. a positioning column; 211. and (3) a support leg.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses stable form electric hammer drill bit. Referring to fig. 1 and 2, the stable electric hammer drill includes an integrally formed drill shank 1, a drill rod 10 and a tool bit 11, two symmetrically disposed positions are disposed on the drill shank 1, a double helix flute 103 is formed on an outer surface of the drill rod 10, and the double helix flute 103 extends along a length direction of the drill rod 10.

Referring to fig. 1 and 3, a positioning seat 2 is rotatably arranged outside a drill rod 10, the positioning seat 2 and the drill rod 10 are coaxially arranged, and a gap is reserved between the positioning seat 2 and the drill rod 10. The outer side wall of the positioning seat 2 is provided with a plurality of positioning columns 21 in a rotating manner, the positioning columns 21 are circumferentially arranged outside the drill rod 10 in a surrounding manner, and the positioning columns 21 are used for contacting with a material to be punched. The number of the positioning columns 21 can be increased or decreased according to actual conditions, and the number of the positioning columns 21 is three in the embodiment of the application.

Referring to fig. 3 and 4, three sets of waist-shaped holes 201 are formed in the outer side wall of the positioning seat 2 opposite to the positioning column 21, a fastening piece 200 for fixing the positioning column 21 is connected to the positioning seat 2 through a thread, the fastening piece 200 is arranged in the waist-shaped hole 201 in a penetrating manner, and the fastening piece 200 slides along the extending direction of the waist-shaped hole 201. In this embodiment, the fastening element 200 is a butterfly bolt and a locknut, and the positioning column 21 is fixed on the positioning base 2 through the fastening element 200. When the positioning column 21 is rotated to a proper angle in a direction approaching or departing from the drill rod 10, the positioning column 21 can be fixed on the positioning seat 2 by screwing the fastening member 200. The tip that positioning column 21 kept away from positioning seat 2 rotates and is provided with stabilizer blade 211, is formed with the ring gear on the axis of rotation lateral wall on stabilizer blade 211 orientation positioning column 21's the tip lateral wall, and positioning column 21 is formed with the gear that is used for mutually supporting with the ring gear in the axis of rotation of ring gear, and stabilizer blade 211 passes through the mutually supporting rotation setting of gear and ring gear on positioning column 21.

Referring to fig. 2 and 3, a groove 102 is formed on the outer side wall of the drill rod 10, the groove 102 is located between the double helix type chip groove 103 and the drill shank 1, and the groove 102 is annularly arranged. The outside of the drill rod 10 is provided with a base 101 parallel to the positioning seat 2, the outer side wall of the base 101 facing the positioning seat 2 is fixedly provided with an expansion link 12, the expansion link 12 extends along the length direction of the drill handle 1, the other end of the expansion link 12 is fixedly connected with the positioning seat 2, and the expansion link 12 extends and retracts along the length direction of the drill rod 10. The inside reset spring 121 that is provided with of telescopic link 12, reset spring 121 and drilling rod 10 are coaxial setting, and reset spring 121 one end and telescopic link 12 fixed connection, the reset spring 121 other end and base 101 conflict each other, and reset spring 121 stretches out and draws back along the length direction of drilling rod 10. After the drilling operation is completed and the drill rod 10 is taken out from the surface of the material to be drilled, the telescopic rod 12 is extended to the direction away from the tool bit 11 under the elastic force of the return spring 121, so that automatic return can be realized.

The implementation principle of a stable form electric hammer drill bit of this application embodiment does: when punching the operation, earlier aim at tool bit 11 with the material of waiting to punch, through compressing tightly reference column 21 on waiting to punch the material face, just can come to restrict tool bit 11 through reference column 21 this moment, along with the going on of the operation of punching, telescopic link 12 will compress tightly on positioning seat 2 and make reference column 21 and the material of waiting to punch keep compressing tightly the state to improve the stability of tool bit 11 when carrying out drilling operation, made things convenient for going on of staff's operation of punching.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, 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 stable electric hammer drill bit comprises a drill handle (1) and a drill rod (10) arranged on the drill handle (1), wherein a cutter head (11) is arranged at one end, far away from the drill handle (1), of the drill rod (10); the method is characterized in that: the drilling rod (10) is provided with a positioning seat (2) in a rotating mode, the positioning seat (2) and the drilling rod (10) are coaxially arranged, a plurality of positioning columns (21) located outside the tool bit (11) are arranged on the positioning seat (2), and the positioning columns (21) are used for being in contact with a material to be punched.

2. A stabilized electric hammer drill according to claim 1, wherein: the positioning column (21) is rotatably arranged on the positioning seat (2), the positioning column (21) rotates towards the direction far away from or close to the drill rod (10), a fastening piece (200) is connected to the positioning seat (2) in a threaded mode, and the positioning column (21) is fixed to the positioning seat (2) through the fastening piece (200).

3. A stabilized electric hammer drill according to claim 2, wherein: waist-shaped hole (201) have been seted up on the lateral wall of positioning seat (2), fastener (200) wear to establish in waist-shaped hole (201), fastener (200) slide along the extending direction in waist-shaped hole (201).

4. A stabilized electric hammer drill according to claim 1, wherein: the drilling rod (10) is provided with a base (101) in a rotating mode, a telescopic rod (12) extending along the length direction of the drill handle (1) is arranged on the base (101), and the telescopic rod (12) is used for being in contact with the positioning seat (2) and pressing the positioning column (21) on the surface of a material to be punched.

5. A stabilized electric hammer drill according to claim 4, wherein: a groove (102) is formed in the outer side wall, close to the drill shank (1), of the drill rod (10), and the base (101) is arranged in the groove (102).

6. A stabilized electric hammer drill according to claim 4, wherein: the telescopic rod (12) is internally provided with a return spring (121), the return spring (121) stretches along the length direction of the drill rod (10), one end of the return spring (121) is fixedly connected with the telescopic rod (12), and the other end of the return spring (121) is abutted to the base (101).

7. A stabilized electric hammer drill according to claim 1, wherein: the end part of the positioning column (21) is rotatably provided with a supporting leg (211), and the supporting leg (211) rotates towards the direction far away from or close to the positioning seat (2).

8. The stable electric hammer drill according to claim 1, wherein the outer side wall of the drill rod (10) is provided with double helix type chip grooves (103), and the double helix type chip grooves (103) extend along the length direction of the drill rod (10).