CN216706062U - A high-speed steel drill bit with an anti-slip structure - Google Patents

Abstract

The utility model discloses a high-speed steel drill bit with an anti-slip structure, comprising a drill rod, a bottom rod and an anti-skid mechanism. A bottom rod is welded at the lower end of the drill rod, and a bottom rod is installed inside the bottom rod to prevent the drill chuck and the drill bit from being separated from each other. Anti-slip mechanism for relative slippage. The anti-slip mechanism facilitates the efficient replacement of the clamped components of the corresponding size according to the drill chuck of different sizes, so that the high-speed steel drill bit can avoid relative sliding and slippage during the process of being clamped by the drill chuck, and the stability of the drill bit is improved. .

Description

A high-speed steel drill bit with an anti-slip structure

technical field

The utility model relates to the technical field of high-speed steel drill bits, in particular to a high-speed steel drill bit with a slip-proof structure.

Background technique

High-speed steel has good process performance, good strength and toughness, so it is mainly used to manufacture complex thin-edged and impact-resistant metal cutting tools, and it is also the main material of drill bits.

Patent CN202021949618.X discloses a high-speed steel drill bit that can be quickly clamped. When the drill bit is used, the drill bit is sleeved on the bottom of the installation column head, and the positioning hole is clamped at the bottom of the positioning sleeve. The threaded connection is provided with positioning bolts, and the drill body is fastened to the installation column head by the positioning bolts to prevent sliding during drilling. The upper and lower ends of the drill body are provided with serrations. It can be changed up and down, and the other end is used to open the hole, the structure is simple, and the disassembly and assembly are convenient, which greatly improves the clamping efficiency of the drill bit.

The above-mentioned high-speed steel drill bits have some shortcomings: the above-mentioned drill bits are inconvenient to adjust the size of the clamped components of the drill bit according to different clamping structures and different sizes, so that it is not convenient to be quickly installed on different types of drill chucks, which reduces the use effect of the drill bit. .

SUMMARY OF THE INVENTION

The main purpose of the present utility model is to provide a high-speed steel drill bit with a slip-proof structure, which can effectively solve the problems in the background technology.

To achieve the above purpose, the technical scheme adopted by the present utility model is:

A high-speed steel drill bit with an anti-slip structure, comprising a drill rod, a bottom rod and an anti-skid mechanism, a bottom rod is welded to the lower end of the drill rod, and an anti-slip anti-slip anti-slip anti-slip protection device is installed inside the bottom rod to prevent the relative slippage between the drill chuck and the drill bit. mechanism.

Further, the anti-skid mechanism includes an inner groove, an insert ring and a second screw hole, the inner groove is opened inside the lower end of the bottom rod, the insert ring is inserted into the interior of the inner groove, and the side wall of the inner groove is provided with a side wall. Slotting, a card board is inserted and embedded in the side slot, and the inner end of the card board is connected to the outer wall of the insert ring, the outer end of the card board is installed with a blocking strip, and the inside of the insert ring is provided with a first screw hole, so The second screw hole is opened inside the lower end of the drill rod, and fixing bolts are installed inside the first screw hole and the second screw hole; it is convenient to replace the drill bit assembly according to different sizes of drill chucks, and can be clamped more firmly and stably.

Further, there are three groups of the side slots equidistant from each other, so that the clamped drill bit assembly is more stable.

Further, the width dimension of the side slot is consistent with the width dimension of the card board, so that the clamped component is firmer.

Further, the installation heights of the insert rings on the inner side of the retaining bars are arranged in a stepped up and down sequence, which is convenient for unified installation.

Further, the inner wall thread of the first screw hole and the second screw hole is engaged with the outer wall thread of the fixing bolt, which is more convenient for installation or replacement.

Further, the diameter of the insert ring is consistent with the diameter of the inner groove, so that the clamped component is more stable.

Compared with the prior art, the present invention has the following beneficial effects: by aligning the insert ring with the inner groove and simultaneously inserting the card board into the side slot by sliding and inserting from bottom to top, the insert rings installed at the inner ends of the three retaining bars are respectively stepped by steps. It is installed at different height positions at the inner end of the retaining bar, insert the three insert rings at different height positions on the inner end of the retaining bar into the inner groove from bottom to top in turn, and install them in the aligned first screw holes through fixing bolts and engage and install them in the second In the two screw holes, the three installed retaining bars can be fixed at the same time, and the retaining bars of different shapes and sizes can be replaced and installed according to the drill chucks of different shapes and sizes, so as to avoid the drill chuck directly clamping the smooth surface bottom rod. The drill bit is installed more firmly under the engagement of the three groups of protruding retaining bars, which avoids the relative slippage of the drill bit during the high-speed rotation of the drilling rig, and improves the practicability of the drill bit.

Description of drawings

FIG. 1 is a schematic partial three-dimensional structure schematic diagram of the front view of a high-speed steel drill bit with an anti-falling structure according to the present invention.

FIG. 2 is a schematic view of the front cross-sectional structure of a high-speed steel drill bit with a slip-proof structure according to the present invention.

FIG. 3 is a schematic top-view cross-sectional view of the anti-slip mechanism of a high-speed steel drill bit with an anti-fall off structure according to the present invention.

FIG. 4 is a schematic partial three-dimensional structure diagram of a retaining bar of a high-speed steel drill bit with a slip-proof structure according to the present invention.

In the figure: 1, drill pipe; 2, bottom rod; 301, side slot; 302, clamping plate; 303, retaining bar; 304, inner groove; 305, insert ring; 306, first screw hole; 307, second screw holes; 308, fixing bolts.

Detailed ways

In order to make the technical means, creation features, achievement goals and effects of the present invention easy to understand and understand, the present invention will be further described below with reference to the specific embodiments.

As shown in Figure 1-4, a high-speed steel drill bit with an anti-fall off structure includes a drill rod 1, a bottom rod 2 and an anti-skid mechanism. A bottom rod 2 is welded to the lower end of the drill rod 1, and a drill clamp is installed inside the bottom rod 2. An anti-slip mechanism for relative slippage between the head and the drill.

The anti-skid mechanism includes an inner groove 304, an insert ring 305 and a second screw hole 307, the inner groove 304 is opened inside the lower end of the bottom rod 2, the insert ring 305 is inserted into the inner groove 304, and the side wall of the inner groove 304 is provided with a side opening Slot 301, a card plate 302 is inserted into the side slot 301, and the inner end of the card plate 302 is connected to the outer wall of the insert ring 305, the outer end of the card plate 302 is installed with a blocking bar 303, and the inside of the insert ring 305 is provided with a first screw hole 306 , the second screw hole 307 is opened inside the lower end of the drill rod 1, and the first screw hole 306 and the second screw hole 307 are installed with fixing bolts 308; keep using.

Among them, there are three groups of side slots 301 equidistantly arranged, so that the clamped drill bit assembly is more stable.

Wherein, the width dimension of the side slot 301 is consistent with the width dimension of the card board 302, so that the clamped component is more firm.

Wherein, the installation heights of the inner inserts 305 of the blocking bars 303 are arranged up and down in a stepped manner, which is convenient for unified installation.

Wherein, the inner wall threads of the first screw holes 306 and the second screw holes 307 mesh with the outer wall threads of the fixing bolt 308, which is more convenient for installation or replacement.

Wherein, the diameter dimension of the insert ring 305 is consistent with the diameter dimension of the inner groove 304, so that the clamped component is more stable.

It should be noted that the present invention is a high-speed steel drill bit with an anti-fall off structure. By aligning the insert ring 305 with the inner groove 304 and at the same time aligning the card plate 302 with the side slot 301, it is slid and inserted from bottom to top. The insert rings 305 installed at the inner end of 303 are respectively installed at different height positions at the inner end of the baffle bar 303 in a stepped manner. The bolts 308 are engaged and installed in the aligned first screw holes 306 and in the second screw holes 307, so that the three installed retaining bars 303 can be fixed at the same time. bar 303 , so as to prevent the drill chuck from directly clamping the bottom rod 2 with a smooth surface, and the drill bit is installed under the engagement of the three groups of protruding retaining bars 303 .

The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention There will also be various changes and improvements in the new model, which all fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. A high-speed steel drill bit with an anti-fall off structure, characterized in that it comprises a drill rod (1), a bottom rod (2) and an anti-skid mechanism, wherein the bottom rod (2) is welded to the lower end of the drill rod (1), so the An anti-skid mechanism is installed inside the bottom rod (2) to prevent the relative slippage between the chuck of the drilling rig and the drill bit. 2. A high-speed steel drill bit with an anti-fall off structure according to claim 1, wherein the anti-skid mechanism comprises an inner groove (304), an insert ring (305) and a second screw hole (307), The inner groove (304) is opened inside the lower end of the bottom rod (2), the insert ring (305) is inserted into the inner groove (304), and the side wall of the inner groove (304) is provided with a side slot (301) , a card plate (302) is inserted into the side slot (301), and the inner end of the card plate (302) is connected to the outer wall of the insert ring (305), and the outer end of the card plate (302) is installed with a blocking bar ( 303), a first screw hole (306) is opened inside the insert ring (305), the second screw hole (307) is opened inside the lower end of the drill rod (1), the first screw hole (306) and A fixing bolt (308) is installed inside the second screw hole (307). 3 . The high-speed steel drill bit with an anti-shedding structure according to claim 2 , wherein three groups of the side slots ( 301 ) are equally spaced. 4 . 4. A high-speed steel drill bit with an anti-shedding structure according to claim 2, characterized in that: the width dimension of the side slot (301) is consistent with the width dimension of the clamping plate (302). 5 . The high-speed steel drill with an anti-fall off structure according to claim 2 , wherein the installation heights of the inner inserts ( 305 ) of the retaining bars ( 303 ) are arranged in a stepped up and down sequence. 6 . 6. A high-speed steel drill with an anti-fall off structure according to claim 2, characterized in that: the inner wall thread of the first screw hole (306) and the second screw hole (307) and the outer wall of the fixing bolt (308) The threads mesh with each other. 7 . The high-speed steel drill bit with a slip-proof structure according to claim 2 , wherein the diameter of the insert ring ( 305 ) is consistent with the diameter of the inner groove ( 304 ). 8 .

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