Combined alloy drill bit

Abstract

The combined type alloy drill bit comprises a positioning block, a groove is formed in the side surface of the positioning block, a supporting clamping block is arranged on the inner wall of the groove of the positioning block, a drill bit body is fixedly connected to one end of the supporting clamping block, a rotating groove is formed in the outer surface of the positioning block, and a transmission circular ring is rotationally connected to the inner wall of the rotating groove of the positioning block. The combined type alloy drill bit is provided with a transmission circular ring and an extrusion clamping block, when the combined type alloy drill bit works, the transmission circular ring is rotated to drive a limiting tooth block to move, the limiting tooth block drives two transmission gears and a linkage lead screw to rotate at the same time, and the linkage lead screw drives the extrusion clamping block to slide through threads; and the extrusion clamping block can conveniently clamp and fix the supporting clamping block, the fixing uniformity of the supporting clamping block is improved, the stability of subsequent machining is improved, meanwhile, the supporting clamping block and the drill bit body can be conveniently and rapidly disassembled and assembled through rotation of the transmission circular ring, and the maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of alloy drills, and particularly relates to a combined alloy drill bit. Background Technique

[0002] A cemented carbide drill bit is a piece of equipment used in drilling engineering. An alloy drill bit is a drill bit made of cemented carbide material, which has characteristics such as high hardness, high strength, and high wear resistance, and is widely used in fields such as machining, construction engineering, and mining. The cemented carbide drill bit breaks rocks by the drilling pressure and the impact load generated by its own rotation. During rock drilling, the drill bit is subjected to high-frequency impact loads and is also affected by various combined stresses such as torsion, bending, tension, and compression. It is worn and corroded by working media such as rocks, rock dust, and mine water in a high-speed rotating and colliding environment. Cemented carbide drill bits are divided into four basic types: solid cemented carbide drill bits, cemented carbide indexable insert drill bits, brazed cemented carbide drill bits, and replaceable cemented carbide crown drill bits. Each type of drill bit has its own advantages suitable for specific processing conditions.

[0003] When installing the drill bit, it is necessary to ensure that the connection between the drill bit and the spindle is firm to avoid loosening or swinging. Although the existing combined alloy drill bits can be disassembled and maintained, they are generally fixed to the drill bit by key connection or bolts, and the disassembly process is relatively cumbersome and the connection part of the drill bit is worn greatly during work. Content of the Utility Model

[0004] The purpose of the utility model is to provide a combined alloy drill bit to solve the problems in the above-mentioned background technique that the drill bit is generally fixed by key connection or bolts, the disassembly process is relatively cumbersome, and the connection part of the drill bit is worn greatly during work.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A combined alloy drill bit includes a positioning block, with a groove provided on its side surface. A support block is provided on the inner wall of the groove of the positioning block. One end of the support block is fixedly connected to a drill bit body. A rotating groove is provided on the outer surface of the positioning block, and a transmission ring is rotatably connected to the inner wall of the rotating groove of the positioning block. Uniformly arranged limiting tooth blocks are provided on the side surface of the transmission ring. Two transmission gears are rotatably connected to the inner wall of the groove of the positioning block. A linkage lead screw is fixedly connected to the rotating shaft of one end of the transmission gear facing the support block. Two extrusion blocks are slidably connected to the inner wall of the groove of the positioning block. An auxiliary clamping mechanism is provided in the groove of the positioning block, which pushes the auxiliary clamping block through the sliding of the side positioning block to clamp and fix the support block.

[0006] Preferably, a positioning groove is provided on the surface of the support block, and the transmission ring is meshed with the two transmission gears respectively through the limiting tooth blocks.

[0007] With the above technical solution, the positioning groove of the supporting block facilitates the installation of the transmission ring, enabling the transmission ring to engage with the transmission gear through the limiting tooth blocks.

[0008] Preferably, the linkage lead screw and the extrusion block form a threaded connection, the extrusion block and the supporting block form a clamping connection, and a groove is provided on the surface of the extrusion block facing the drill bit body.

[0009] With the above technical solution, the rotation of the transmission ring causes the limiting tooth blocks to engage with the transmission gear, and the rotation of the transmission gear drives the linkage lead screw to rotate.

[0010] Preferably, an arc-shaped protrusion is provided on the inner wall of the groove of the extrusion block. The auxiliary clamping mechanism includes a side positioning block that is slidably connected to the inner wall of the groove of the positioning block, and two auxiliary clamping blocks are slidably connected to the inner wall of the groove of the positioning block.

[0011] With the above technical solution, the arc-shaped protrusion of the extrusion block pushes the side positioning block, causing the side positioning block to drive the auxiliary clamping blocks.

[0012] Preferably, one end of the side positioning block is inclined, and the inclined end of the side positioning block penetrates through the groove of the extrusion block. A spring is connected between the side positioning block and the positioning block. The other end of the side positioning block is arc-shaped. The side surface of one end of the auxiliary clamping block facing the side positioning block is inclined, and a spring is connected between the auxiliary clamping block and the positioning block.

[0013] With the above technical solution, the side positioning block pushes the auxiliary clamping blocks, enabling the auxiliary clamping blocks to clamp and fix the drill bit body.

[0014] Preferably, a buffer mounting block is fixedly connected to one end of the positioning block. A support pressing block is provided on the outer surface of the buffer mounting block. A first piston rod is slidably connected to the inner wall of the groove of the support pressing block, and a support baffle is fixed to one end of the first piston rod. A second piston rod is slidably connected to the inner wall of the groove of the support pressing block, and a damping friction block is fixedly connected to one end of the second piston rod.

[0015] With the above technical solution, the buffer mounting block pushes the support baffle, causing the support baffle to drive the first piston rod to move.

[0016] Preferably, the positioning block and the support pressing block form a sliding connection, and a spring is connected between the positioning block and the support pressing block. A spring is connected between the first piston rod and the support pressing block, and the first piston rod and the second piston rod are connected in communication. A spring is connected between the damping friction block and the support pressing block.

[0017] With the above technical solution, the first piston rod drives the damping friction block to slide, but the damping friction block buffers the support pressing block.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the combined alloy drill bit:

[0019] 1. A transmission ring and an extrusion block are provided. When the device is working, the transmission ring is rotated to drive the limit tooth block to move, so that the limit tooth block drives two transmission gears and the linkage screw to rotate at the same time. The linkage screw drives the extrusion block to slide through the thread, which is convenient for the extrusion block to engage and fix the support block, thereby improving the uniformity of fixing the support block and increasing the stability of subsequent processing. At the same time, the rotation of the transmission ring facilitates the rapid disassembly and assembly of the support block and the drill body, thereby improving the efficiency of maintenance;

[0020] 2. A side positioning block and an auxiliary clamping block are provided, so that when the device is working, the support clamping block is inserted into the squeeze clamping block for clamping, and the arc of the inner wall of the squeeze clamping block groove is lifted to push the side positioning block to move, so that the side positioning block pushes the auxiliary clamping block to slide close to the drill body, which is convenient for clamping and fixing the drill body, and further improves the stability of the drill body during processing;

[0021] 3. A second piston column and a damping friction block are provided, so that when the device is working, the sliding connection between the positioning block and the buffer mounting block facilitates the reduction of the impact force through the spring, and at the same time, the sliding of the support pressure block pushes the support baffle and the first piston column to move, and the air is guided to the second piston column to drive the damping friction block to resist the support pressure block, which is convenient for friction deceleration of the support pressure block, thereby improving the buffering performance of the device when it is working and reducing wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the positioning block and the transmission ring connected to the utility model;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the positioning block and the buffer mounting block of the utility model;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the connection between the transmission ring and the limiting gear block of the utility model;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the linkage screw and the extrusion block connected to the utility model;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the side positioning block and the auxiliary clamping block connected to the utility model;

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the transmission gear and the linkage screw of the utility model.

[0028] In the figure: 1, positioning block; 2, supporting clamping block; 3, drill bit body; 4, transmission ring; 5, limiting tooth block; 6, transmission gear; 7, linkage lead screw; 8, extrusion clamping block; 9, side positioning block; 10, auxiliary clamping block; 11, buffer mounting block; 12, supporting pressing block; 13, supporting baffle; 14, first piston column; 15, second piston column; 16, damping friction block. Detailed implementation manner

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figure 1-6 , the present invention provides a technical solution: a combined alloy drill bit, including a positioning block 1, a supporting clamping block 2, a drill bit body 3, a transmission ring 4, a limiting tooth block 5, a transmission gear 6, a linkage lead screw 7, an extrusion clamping block 8, a side positioning block 9, an auxiliary clamping block 10, a buffer mounting block 11, a supporting pressing block 12, a supporting baffle 13, a first piston column 14, a second piston column 15 and a damping friction block 16. The side surface of the positioning block 1 is provided with a groove, and the surface of the supporting clamping block 2 is provided with a positioning groove. The transmission ring 4 is respectively meshed with two transmission gears 6 through the limiting tooth block 5. The linkage lead screw 7 is threadedly connected with the extrusion clamping block 8, and the extrusion clamping block 8 is snap-connected with the supporting clamping block 2. The surface of the extrusion clamping block 8 facing the drill bit body 3 is provided with a groove. When using this device, first insert the supporting clamping block 2 at one end of the drill bit body 3 into the groove of the positioning block 1, and then rotate the transmission ring 4, so that the transmission ring 4 meshes with two transmission gears 6 through the limiting tooth block 5 and rotates.

[0031] The inner wall of the groove of the positioning block 1 is provided with a supporting clamping block 2. One end of the supporting clamping block 2 is fixedly connected with the drill bit body 3. The outer surface of the positioning block 1 is provided with a rotating groove, and the inner wall of the rotating groove of the positioning block 1 is rotatably connected with a transmission ring 4. The inner wall of the groove of the extrusion clamping block 8 is provided with an arc-shaped protrusion. The auxiliary clamping mechanism includes a side positioning block 9, which is slidably connected to the inner wall of the groove of the positioning block 1. Two auxiliary clamping blocks 10 are slidably connected to the inner wall of the groove of the positioning block 1. After the transmission gear 6 rotates, it drives the linkage lead screw 7 at one end of the rotating shaft to rotate. The linkage lead screw 7 drives the extrusion clamping block 8 to slide through the thread, so as to facilitate the extrusion clamping block 8 to insert and fix the supporting clamping block 2, so as to quickly disassemble and assemble and fix the supporting clamping block 2.

[0032] The side surface of the transmission ring 4 is evenly provided with limited tooth blocks 5, the inner wall of the groove of the positioning block 1 is rotatably connected with two transmission gears 6, one end of the side positioning block 9 is inclined, and the end of the side positioning block 9 with an inclined design passes through the groove of the extrusion card block 8, a spring is connected between the side positioning block 9 and the positioning block 1, and the other end of the side positioning block 9 is arc-shaped. The side surface of the auxiliary clamping block 10 toward one end of the side positioning block 9 is inclined, and a spring is connected between the auxiliary clamping block 10 and the positioning block 1, and one end of the positioning block 1 is fixedly connected with a buffer mounting block 11, and a support pressing block 12 is provided on the outer surface of the buffer mounting block 11, and the inner wall of the groove of the support pressing block 12 is slidably connected A first piston column 14 is connected, and a support baffle 13 is fixed to one end of the first piston column 14. A second piston column 15 is slidably connected to the inner wall of the groove of the support pressure block 12, and a damping friction block 16 is fixedly connected to one end of the second piston column 15. When the squeezing block 8 slides to engage the support block 2, the arc-shaped protrusion of the groove of the squeezing block 8 pushes the side positioning block 9 to slide, and one arc-shaped end of the side positioning block 9 pushes the inclined surface of the auxiliary clamping block 10, thereby driving the auxiliary clamping block 10 to slide close to the drill body 3, so that the auxiliary clamping block 10 can clamp and fix the drill body 3, thereby further improving the stability of the drill body 3 during operation.

[0033] The transmission gear 6 is fixedly connected with a linkage screw 7 toward the rotating shaft at one end of the support block 2. The inner wall of the groove of the positioning block 1 is slidably connected with two extrusion blocks 8. An auxiliary clamping mechanism is provided in the groove of the positioning block 1, which pushes the auxiliary clamping block 10 through the sliding of the side positioning block 9 to clamp and fix the support block 2. The positioning block 1 is slidably connected with the support pressure block 12, and a spring is connected between the positioning block 1 and the support pressure block 12. A spring is connected between the first piston column 14 and the support pressure block 12, and the first piston column 14 is connected with the second piston column 15. The damping friction block 1 A spring is connected between 6 and the support block 12. During operation, the impact force is reduced by sliding between the positioning block 1 and the buffer mounting block 11 and using the spring. At the same time, the support block 12 will push the support baffle 13 to slide, and the spring on the surface of the support baffle 13 will further eliminate the impact force. The support baffle 13 drives the first piston column 14 to slide and pushes the air to the second piston column 15, so that the second piston column 15 drives the damping friction block 16 to rub against the support block 12, thereby damping and decelerating the support block 12, thereby improving the buffering performance of the device during operation.

[0034] Working principle: When using this combined alloy drill bit, first insert the drill bit body 3 and the support block 2 into the groove of the positioning block 1, and then rotate the transmission ring 4 to drive the limit tooth block 5 to engage with the transmission gear 6, so that the transmission gear 6 drives the linkage lead screw 7 to rotate. The extrusion block 8 is driven by the linkage lead screw 7 to slide and engage with the support block 2. The side positioning block 9 is pushed to slide by the inner wall of the groove of the extrusion block 8, so that the side positioning block 9 drives the auxiliary clamping block 10 to clamp the drill bit body 3. During operation, buffering is carried out by the sliding of the positioning block 1 and the buffer mounting block 11. The support baffle 13 and the first piston column 14 are pushed by the support pressing block 12, so that the first piston column 14 pushes the air towards the second piston column 15, which is convenient for the second piston column 15 to drive the damping friction block 16 to frictionally damp the support pressing block 12 for buffering, increasing the overall practicability.

[0035] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined alloy drill bit, comprising a positioning block (1), a side surface of which is provided with a groove, an inner wall of the groove of the positioning block (1) is provided with a supporting block (2), one end of the supporting block (2) is fixedly connected to a drill body (3), characterized in that: The outer surface of the positioning block (1) is provided with a rotation groove, and the inner wall of the rotation groove of the positioning block (1) is rotatably connected to a transmission ring (4), and the side surface of the transmission ring (4) is evenly provided with a limit tooth block (5). The inner wall of the groove of the positioning block (1) is rotatably connected to two transmission gears (6), and the transmission gear (6) is fixedly connected to a linkage screw (7) at a rotating shaft at one end of the support block (2). The inner wall of the groove of the positioning block (1) is slidably connected to two extrusion blocks (8), and an auxiliary clamping mechanism is provided in the groove of the positioning block (1), which pushes the auxiliary clamping block (10) through the sliding of the side positioning block (9) to clamp and fix the support block (2).

2. The combined alloy drill bit according to claim 1, characterized in that: The surface of the supporting block (2) is provided with a positioning groove, and the transmission ring (4) is meshedly connected with two transmission gears (6) respectively through a limiting tooth block (5).

3. The combined alloy drill bit according to claim 1, characterized in that: The linked lead screw (7) and the extrusion block (8) are threadedly connected, the extrusion block (8) and the support block (2) are snap-fitted together, and a groove is provided on the surface of the extrusion block (8) facing the drill body (3).

4. The combined alloy drill bit according to claim 1, characterized in that: The inner wall of the groove of the squeezing clamping block (8) is provided with an arc-shaped protrusion, and the auxiliary clamping mechanism comprises a side positioning block (9) which is slidably connected to the inner wall of the groove of the positioning block (1), and the inner wall of the groove of the positioning block (1) is slidably connected to two auxiliary clamping blocks (10).

5. The combined alloy drill bit according to claim 4, characterized in that: One end of the side positioning block (9) is designed to be inclined, and the inclined end of the side positioning block (9) passes through the groove of the extrusion block (8), a spring is connected between the side positioning block (9) and the positioning block (1), the other end of the side positioning block (9) is designed to be arc-shaped, the side surface of the auxiliary clamping block (10) facing one end of the side positioning block (9) is designed to be inclined, and a spring is connected between the auxiliary clamping block (10) and the positioning block (1).

6. The combined alloy drill bit according to claim 1, characterized in that: One end of the positioning block (1) is fixedly connected to a buffer mounting block (11); a support pressure block (12) is arranged on the outer surface of the buffer mounting block (11); a first piston column (14) is slidably connected to the inner wall of the groove of the support pressure block (12); a support baffle (13) is fixedly connected to one end of the first piston column (14); a second piston column (15) is slidably connected to the inner wall of the groove of the support pressure block (12); and a damping friction block (16) is fixedly connected to one end of the second piston column (15).

7. The combined alloy drill bit according to claim 6, characterized in that: The positioning block (1) and the supporting pressure block (12) are slidably connected, and a spring is connected between the positioning block (1) and the supporting pressure block (12), a spring is connected between the first piston column (14) and the supporting pressure block (12), and the first piston column (14) and the second piston column (15) are connected, and a spring is connected between the damping friction block (16) and the supporting pressure block (12).

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