TWM591035U - Structure improvement of cement drill bit - Google Patents

Abstract

An improved cement drill bit structure is a cement drill bit, which includes a drill rod and a working section at the front end of the drill rod. A spiral chip grooving slot is opened on the working section, and a drill bit is integrally connected to the front end; the drill bit is a drilling edge of a cross cutter head In the structure, the angle between the ends of the two drilling lips on the opposite surface is an acute angle; with the above structure, when the operator uses a cement drill to drill the wall or wall surface, the angle between the ends of the two drilling lips on the opposite surface The small size makes the positioning of the drilling point accurate and is not easy to jump or run. The drilling edge structure of the cross cutter head is easy to control for drilling operations, and the force of each drilling lip is low, thereby forming a straight and hole shape High roundness to improve the efficiency of drilling operations.

Description

Cement bit structure improvement

This creation is about an easy drilling operation, stable and accurate positioning, and the straightness of the hole and the high roundness of the hole shape to facilitate the improvement of the structure of the cement drill for subsequent operations.

Press, as shown in FIGS. 1A and 1B, a conventional conventional cement drill bit 90 is drilled by a drilling lip 91 and a drill belly 92 intersecting the middle end (a straight blade) Structure), although the effect of drilling the cement surface can be achieved, but the angle between the ends of the two opposite drilling lips 91 is relatively large (about 120 degrees to 140 degrees), making the conventional cement drill 90 on the wall, wall The surface is easy to jump and difficult to locate accurately (as shown in Figures 2A and 2B). If the operator is not careful, the hole will be skewed and the roundness of the hole will be low, resulting in poor drilling efficiency.

The main purpose of this creation is to provide a structure improvement of a cement drill bit. It is a cement drill bit including a drill rod and a working section provided at the front end of the drill rod. At least one spiral chip removal slot is opened on the working section, and the front end is integrally connected A drill bit is provided; characterized in that, the drill bit is a cross bit, a drilling edge structure composed of four drill lips and a belly, and the angle between the ends of the two drill lips on each opposite surface is 70 to 90 degrees; With the above structure, when the operator uses the cement drill to drill the wall or wall surface, the angle between the ends of the two drilling lips on each opposite surface is small, which makes the positioning of the drilling point precise. It is easy to jump or run, the four-drill lip of the cross cutter head is easy to drill and manipulate, and the force of each drill lip is low, thus forming a straight hole and high roundness of the hole shape to improve the drill Work efficiency of hole operation.

The second objective of this creation is to provide a structure improvement of a cement drill bit, wherein the bottom end of the drill rod of the cement drill bit is provided with a male thread section, and the male thread section is screwed in a hexagonal joint, For the cement drill bit to be embedded in the head of the electric screwdriver through the hexagonal joint; the male threaded section is screwed on one end of the sub-adapter. When the operator uses the electric screwdriver to operate the sub-head, only the The other end of the screwdriver adapter is inserted into the head end of the screwdriver head, so that the operator can directly apply the cement drill bit, thereby improving work efficiency.

Another purpose of this creation is to provide a cement drill bit structure improvement, in which the angle between the ends of the two drill lips on each opposing surface is 80 degrees for accurate positioning of the drilling point, which is not easy to jump or run; And the four drilling lips are at an equal angle to each other, so that the stress degree of each drilling lip is equal.

Another purpose of this creation is to provide a structural improvement of a cement drill bit, in which the drill bit is made of tungsten steel, which has high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistance and other excellent properties .

Another purpose of this creation is to provide a cement drill bit structure improvement, in which the drill rod is made of carbon steel and has excellent properties such as high hardness, high strength and high toughness.

Next, in conjunction with the drawings and drawing numbers, a preferred embodiment will be given for further explanation, which will enable your reviewer to have a more detailed understanding of the creation.

〔This creation〕

1‧‧‧Cement drill bit

10‧‧‧Drill pipe

11‧‧‧ male thread section

20‧‧‧Working section

21‧‧‧chip flute

30‧‧‧Drill

31‧‧‧Drilling lips

32‧‧‧ belly drill

40‧‧‧Hexagon joint

50‧‧‧driver adapter

60‧‧‧starter head

θ‧‧‧ The angle between the ends of the two drill lips on the opposite surface

[Learning part]

90‧‧‧Cement drill bit

91‧‧‧Drilling lips

92‧‧‧Abdomen

FIG. 1A is a schematic view of a stereoscopic appearance of conventional creation.

FIG. 1B is a partially enlarged front view of a conventional creation.

FIG. 2A is a first cross-sectional operation diagram of conventional creation.

FIG. 2B is a second cross-sectional operation diagram of conventional creation.

Figure 3A is a schematic view of the stereoscopic appearance of the original creation.

Figure 3B is a partially enlarged front view of the original creation.

FIG. 4A is a first cross-sectional operation diagram of the original creation.

FIG. 4B is a second cross-sectional operation diagram of the original creation.

Fig. 5 is an exploded perspective view of the first implementation of this creation.

FIG. 5A is a three-dimensional assembly diagram of the first embodiment of the present creation.

FIG. 6 is an exploded perspective view of the second implementation of this creation.

FIG. 6A is a perspective combination diagram of the second embodiment of the present creation.

Please refer to FIG. 3A to FIG. 3B. This creation provides a structural improvement of a cement drill bit, which is a cement drill bit 1 including a drill rod 10 and a working section 20 provided at the front end of the drill rod 10. The working section 20 is provided with At least one helical chip flute 21, and a drill bit 30 is integrally connected at the front end; characterized in that the drill bit 30 is a cross bit, a drilling edge structure composed of four drill lips 31 and a belly 32, each The angle θ between the ends of the two drilling lips 31 on an opposite surface is 70 to 90 degrees (acute angle); please refer to FIGS. 3B to 4B. With the above structure, when the operator uses the The cement drill bit 1 is used for drilling holes in walls and walls. Because the angle between the ends of the two drilling lips 31 on each opposite surface is small, the positioning of the drilling point is accurate and it is not easy to jump or run. The four drills of the cross bit The lip 31 is easy to handle during drilling operations, and the force of each drilling lip 31 is relatively low, thereby forming straight holes and high roundness of the hole shape, so as to improve the working efficiency of the drilling operation.

Following the above, and referring to FIGS. 3A, 5 and 5A, the bottom end of the drill rod 10 of the cement drill bit 1 is provided with a male threaded section 11, and the male threaded section 11 is screwed on a hexagon In the joint 40, the cement drill 1 is embedded in the head of the electric screwdriver through the hexagonal joint 40.

In addition, please refer to FIG. 6 and FIG. 6A. The male threaded section 11 is screwed together at one end of the sub-adapter 50. When the operator uses an electric screwdriver to operate the sub-head 60, only the screwdriver needs to be transferred The other end of the head 50 is inserted into the head end of the screwdriver head 60, so that the operator can directly apply the cement drill bit 1 to improve work efficiency.

Preferably, please refer to FIG. 3B and FIG. 4B, the angle θ between the ends of the two drilling lips 31 on each opposite surface is 80 degrees, so that the positioning of the drilling point is accurate and it is not easy to jump or run; and the The four drilling lips 31 are at an equal angle (ie 90 degrees) to each other, so that the stress level of each drilling lip 31 is equal, and each drilling lip 31 of the original cross-head structure is subjected to a stress, compared with With the conventional cement drill 90 (as shown in FIGS. 1A and 1B), each drill lip 91 of the flat cutter structure is reduced by 50%, so as to prolong the service life.

Finally, the drill bit 30 is made of tungsten steel, and tungsten steel (hard alloy) has high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistance and other excellent properties; the drill rod 10 is made of carbon steel with high hardness and high hardness Excellent performance such as strength and high toughness.

Summarizing the above description, by creating the design of the above structure, it can be effectively overcome The shortcomings faced by conventional creation further have many of the above advantages and practical values. Therefore, this creation is a structure with excellent creativity, and there is no same or similar product creation or public use in the same technical field, so this creation The requirements for "novelty" and "progressiveness" in the creation of patents have been met, and applications are submitted in accordance with the law.

20‧‧‧Working section

21‧‧‧chip flute

30‧‧‧Drill

31‧‧‧Drilling lips

32‧‧‧ belly drill

θ‧‧‧The angle between the ends of two drill lips

Claims (8)

An improved cement drill bit structure is a cement drill bit, which includes a drill rod and a working section provided at the front end of the drill rod, at least one spiral chip removal slot is opened on the working section, and a drill bit is integrally connected at the front end; features The drill bit is a cross bit, a drilling edge structure composed of four drill lips and a belly, and the angle between the ends of the two drill lips on each opposite surface is 70 to 90 degrees. According to the structural improvement of the cement drill bit of item 1 of the patent application scope, wherein the bottom end of the drill rod of the cement drill bit is provided with a male thread segment. According to the improvement of the structure of the second patent application, the structure of the cement drill bit, wherein the male thread section is screwed in a hexagonal joint, and the hexagonal joint is embedded in the head of the electric screwdriver. According to the improvement of the cement drill bit structure of claim 2 of the patent application scope, wherein the male threaded section is screwed on one end of the sub-adapter, and the other end of the screwdriver adapter is inserted in one end of the sub-head, and The other end of the screwdriver head is embedded in the head of the electric screwdriver. According to the improvement of the structure of the first patent application for the cement drill bit, the angle between the ends of the two drill lips on each opposite surface is 80 degrees. According to the improvement of the cement drill bit structure of the first patent application, the four drill lips are at an equal angle to each other. According to the improvement of the structure of the first patent application, the structure of the cement drill bit is tungsten steel. The structure of the cement drill bit according to item 1 of the patent application scope is improved, in which the drill rod is carbon steel.

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