CN216801831U

CN216801831U - Promote type of falling T drill bit of welding seam intensity

Info

Publication number: CN216801831U
Application number: CN202220254549.3U
Authority: CN
Inventors: 岳修涛
Original assignee: Yanggu Xinhe Drilling Tool Co ltd
Current assignee: Yanggu Xinhe Drilling Tool Co ltd
Priority date: 2022-02-08
Filing date: 2022-02-08
Publication date: 2022-06-24
Anticipated expiration: 2032-02-08

Abstract

The utility model relates to the technical field of drill bits and discloses an inverted T-shaped drill bit for improving the strength of a welding seam. Including bit body and type of falling T alloy, the welding groove has been seted up to the upper surface of bit body for the installation type of falling T alloy, the internal surface of welding groove is provided with the wedge face, is used for increasing the welding area between type of falling T alloy and the bit body, type of falling T alloy includes alloy head and base, the surface of base is greater than the lower surface of alloy head for increase the welding area between type of falling T alloy and the bit body, type of falling T alloy is located the inside of welding groove, this promote the type of falling T drill bit of welding seam intensity, through the design of alloy head and base in the type of falling T alloy and the design of the inside wedge face of welding groove, can increase the welding seam area between type of falling T alloy and the bit body, be favorable to improving the intensity of welding between type of falling T alloy and the bit body, prevent type of falling T alloy in the use from droing.

Description

Promote type of falling T drill bit of welding seam intensity

Technical Field

The utility model relates to the technical field of drill bits, in particular to an inverted T-shaped drill bit for improving the strength of a welding seam.

Background

The drill bit is a rotary cutting tool, and in order to improve the processing effect of the drill bit on an object, a hard alloy head is added at the working end of the drill bit during production and manufacturing of the drill bit, and the hard alloy head is fixed in the drill bit in a welding mode.

The inside carbide head's of traditional drill bit side surface all adopts the design of facing directly, when meeting carbide head and drill bit trace, can form vertical facing weld between carbide head and the drill bit, and vertical facing weld's area of welding is less, and welding strength between carbide head and the drill bit is lower, the phenomenon that probably appears droing between carbide head and the drill bit, influences the performance of drill bit.

SUMMERY OF THE UTILITY MODEL

In order to achieve the purpose of the inverted T-shaped drill bit for improving the strength of the welding line, the utility model is realized by the following technical scheme: the utility model provides an promote type of falling T drill bit of welding seam intensity, includes the drill bit body and the type of falling T alloy, the weld groove has been seted up to the upper surface of drill bit body for the installation type of falling T alloy, the internal surface of weld groove is provided with the wedge face for increase the welding area between type of falling T alloy and the drill bit, type of falling T alloy includes alloy head and base, the surface of base is greater than the lower surface of alloy head for increase the welding area between type of falling T alloy and the drill bit, type of falling T alloy is located weld the inside of groove, the drill bit with be welded connection between the type of falling T alloy.

Furthermore, the lower surface of the alloy head is completely overlapped with the upper surface of the base, and the lower surface of the alloy head is used for increasing the area of a welding line between the base and the welding groove.

Furthermore, the periphery of the coincident surface of the upper surface of the base and the lower surface of the alloy head is provided with an extension surface, and the welding block exerts resistance on the surface of the extension surface so as to prevent the base from being separated from the welding block.

Furthermore, the drill bit body and the inverted T-shaped alloy are welded inside the welding groove to form a welding block for welding connection between the inverted T-shaped alloy and the drill bit body.

Furthermore, the outer surface of the welding block is matched with the inner surface of the welding groove, and the inner surface of the welding block is matched with the surfaces of the alloy head, the base and the extension surface, so that the welding area of the inverted T-shaped alloy and the drill body is increased.

Furthermore, the bottom surface of the base is connected with the bottom surface inside the welding groove through a welding block, and the welding area between the base and the welding groove is increased.

Furthermore, the wedge-shaped surface is of an inverted funnel shape and is used for limiting the welding block to be separated from the drill body.

Compared with the prior art, the utility model has the following beneficial effects:

1. this promote type of falling T drill bit of welding seam intensity, through the design of alloy head in the type of falling T alloy and base and the design of the inside wedge face of weld groove, can increase the welding seam area between type of falling T alloy and the bit body, be favorable to improving welded intensity between type of falling T alloy and the bit body, prevent that type of falling T alloy from droing in the use, be favorable to improving the performance of bit body.

2. This promote type of falling T drill bit of welding seam intensity, through the design of base upper surface extension face, the removal of usable welding piece restriction base, the removal of welding piece can be restricted in the design of the inside wedge face of weld groove to can carry out dual restriction to type of falling T alloy, prevent that type of falling T alloy from droing from the drill bit body, be favorable to improving the stability that type of falling T alloy used.

Drawings

FIG. 1 is a front view of the internal structure of the drill bit of the present invention;

FIG. 2 is a schematic structural view of an inverted T-shaped alloy of the present invention;

FIG. 3 is a front view of the surface configuration of the bit and inverted T-shaped alloy of the present invention;

FIG. 4 is a front view of the drill bit and the internal structure of the inverted T-shaped alloy of the present invention;

FIG. 5 is a schematic view of the structure at A in FIG. 4 according to the present invention;

FIG. 6 is a top view of the drill bit and inverted T-shaped alloy mating structure of the present invention.

In the figure: 1. a bit body; 2. welding a groove; 21. a wedge-shaped surface; 3. an inverted T-shaped alloy; 31. an alloy head; 32. a base; 321. spreading the noodles; 4. and (7) welding the blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the inverted T-shaped drill bit for improving the strength of the welding seam is as follows:

referring to fig. 1-6, the inverted T-shaped drill bit for improving the strength of the weld joint comprises a bit body 1 and an inverted T-shaped alloy 3, wherein a weld groove 2 is formed in the upper surface of the bit body 1 and used for installing the inverted T-shaped alloy 3, a wedge-shaped surface 21 is arranged on the inner surface of the weld groove 2 and used for increasing the welding area between the inverted T-shaped alloy 3 and the bit body 1, and the wedge-shaped surface 21 is inverted funnel-shaped and used for limiting the separation of a welding block 4 and the bit body 1.

The inverted T-shaped alloy 3 comprises an alloy head 31 and a base 32, the lower surface of the alloy head 31 is completely coincided with the upper surface of the base 32, the welding seam area between the base 32 and the welding groove 2 is increased, the surface of the base 32 is larger than the lower surface of the alloy head 31, the welding area between the inverted T-shaped alloy 3 and the bit body 1 is increased, the extension surfaces 321 are arranged on the peripheries of the upper surface of the base 32 and the lower surface of the alloy head 31, the resistance is applied to the surfaces of the extension surfaces 321 by the welding blocks 4, the base 32 is prevented from being separated from the welding blocks 4, the inverted T-shaped alloy 3 is located inside the welding groove 2, and the bit body 1 is in welding connection with the inverted T-shaped alloy 3.

The bit body 1 forms the welding piece 4 through the welding in the inside of weld groove 2 with the type of falling T alloy 3 for welded connection between type of falling T alloy 3 and the bit body 1, the surface of welding piece 4 and the internal surface looks adaptation of weld groove 2, the internal surface of welding piece 4 and alloy head 31, the surface looks adaptation of base 32 and extension face 321, be used for increasing the welding area before type of falling T alloy 3 and the bit body 1, the bottom surface of base 32 is connected through welding piece 4 with the inside bottom surface of weld groove 2, be used for increasing the welding seam area between base 32 and the weld groove 2.

The principle of improving the strength of the welding seam between the bit body 1 and the inverted T-shaped alloy 3 is as follows: when the inverted T-shaped alloy 3 is welded in the welding groove 2, the base 32 of the inverted T-shaped alloy 3 is firstly placed in the welding groove 2, meanwhile, a certain gap is reserved between the base 32 and the bottom surface inside the welding groove 2, and then the inverted T-shaped alloy 3 and the bit body 1 are welded together by utilizing welding equipment.

When the welding of the inverted-T-shaped alloy 3 and the bit body 1 is completed, the welding block 4 is formed between the welding groove 2 and the inverted-T-shaped alloy 3, the inner surface of the welding block 4 is welded with the side surface of the alloy head 31, the side surface and the bottom surface of the base 32 and the extension surface 321, and the outer surface of the welding block 4 is welded with the inner surface of the welding groove 2.

At the moment, a convex space is formed in the welding block 4, so that the welding area of the inverted T-shaped alloy 3 and the bit body 1 is increased, meanwhile, the welding block 4 can generate a blocking acting force on the extension face 321, the inverted T-shaped alloy 3 can be prevented from falling off from the bit body 1, and due to the design of the wedge-shaped face 21, the bit body 1 can generate a blocking acting force on the welding block 4, so that the inverted T-shaped alloy 3 can be further prevented from falling off from the bit body 1.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an promote inverted T type drill bit of welding seam intensity, includes drill bit body (1) and inverted T type alloy (3), its characterized in that: weld groove (2) have been seted up to the upper surface of bit body (1), the internal surface of weld groove (2) is provided with wedge face (21), inverted T type alloy (3) are including alloy head (31) and base (32), the surface of base (32) is greater than the lower surface of alloy head (31), inverted T type alloy (3) are located the inside of weld groove (2), bit body (1) with be welded connection between inverted T type alloy (3).

2. The inverted-T drill bit for improving the strength of the weld joint according to claim 1, wherein: the lower surface of the alloy head (31) completely coincides with the upper surface of the base (32).

3. The inverted-T drill bit for improving the strength of the weld joint according to claim 2, wherein: and extension surfaces (321) are arranged on the periphery of the coincident surface of the upper surface of the base (32) and the lower surface of the alloy head (31).

4. The inverted T-shaped drill bit for improving the strength of the weld joint according to claim 3, wherein: the drill body (1) and the inverted T-shaped alloy (3) are welded in the welding groove (2) to form a welding block (4).

5. The inverted T-shaped drill bit for improving the strength of the weld joint according to claim 4, wherein: the outer surface of the welding block (4) is matched with the inner surface of the welding groove (2), and the inner surface of the welding block (4) is matched with the surfaces of the alloy head (31), the base (32) and the extension surface (321).

6. The inverted T-shaped drill bit for improving the strength of the weld joint according to claim 4, wherein: the bottom surface of the base (32) is connected with the bottom surface inside the welding groove (2) through a welding block (4).

7. The inverted T-shaped drill bit for improving the strength of the weld joint according to claim 3, wherein: the wedge-shaped surface (21) is of an inverted funnel shape.