CN219188750U

CN219188750U - Deep hole twist drill

Info

Publication number: CN219188750U
Application number: CN202222766634.0U
Authority: CN
Inventors: 周铁华; 周长铭; 周君谊
Original assignee: Alpha Precision Tools Suzhou Co ltd
Current assignee: Alpha Precision Tools Suzhou Co ltd
Priority date: 2022-10-20
Filing date: 2022-10-20
Publication date: 2023-06-16
Anticipated expiration: 2032-10-20

Abstract

The utility model discloses a deep hole twist drill, which comprises a drill bit and a drill rod, wherein the drill bit is positioned at the front end of the drill rod, the drill shank is positioned at the rear end of the drill rod, the inner wall of the outer wall of one side of the rear half section of the drill shank is provided with a mounting pin groove, the drill shank is sleeved with a chip blocking device close to the outer part of the front side, the inner part of the circular outer wall of the drill rod is provided with a twist spiral groove, the drill shank of the deep hole twist drill is additionally provided with a novel chip blocking device close to the outer part of the front side, and the chip blocking device can be used for adjusting the position according to the mounting depth of the drill shank, so that the deep hole twist drill is not influenced to be mounted and fixed through the drill shank, and when equipment drills materials through the deep hole twist drill, metal waste generated during drilling can be connected together and move towards the direction of the equipment, and the chip blocking device can block the metal waste generated during drilling and prevent the drilling equipment from being blocked and damaged by the metal waste generated by connection.

Description

Deep hole twist drill

Technical Field

The utility model belongs to the technical field of drill bits, and particularly relates to a deep hole twist drill.

Background

Twist drills are tools that drill round holes in a workpiece by rotating them about a fixed axis, and are known as twist-like flutes, with the drill bit material typically being high-speed tool steel or cemented carbide.

Through retrieving, the patent document with the application number of CN202120294132.5 discloses a novel hard alloy inner-cooling deep hole twist drill, which comprises a cylindrical handle and a cutter body arranged on the cylindrical handle, wherein the cutter body comprises a cutting edge part and a transition neck part for connecting the cylindrical handle and the cutting edge part, chip grooves are formed in the cutting edge part, the cutting edge part adopts front back taper and rear parallel core thickness design, the chip grooves are intersected with a cutter body entity part to form two cutting auxiliary edges and two blade lobes, the cutting edge part is provided with two rear cutter surfaces and two chip grooves, the two rear cutter surfaces are intersected to form a chisel edge, the two rear cutter surfaces are intersected with the two chip grooves respectively to form two main cutting edges, the two rear cutter surfaces are intersected with the two chip grooves respectively to form two cutting inner edges, and the main cutting edges are different from the cutting rake angles of the cutting inner edges. The novel hard alloy internal cooling deep hole twist drill solves the problems that the deep hole machining cutting temperature is high, chip removal is not smooth, the cutter rigidity is poor, drilling is easy to vibrate and deviate, so that the cutter is worn, the cutting edge is broken, a drill rod is broken and the like, but when the deep hole twist drill drills materials through high-speed rotation, continuous metal waste materials can be generated during drilling, the continuous metal waste materials can be easily contacted with drilling equipment, the connection firmness of the connecting part of the drilling equipment and the deep hole twist drill can be influenced along with the continuous generation of the metal waste materials, and the condition that the conventional installation of the deep hole twist drill is loose is easily caused.

Disclosure of Invention

The utility model aims to provide a deep hole twist drill, which solves the problem that the always connected metal waste materials in the background art can easily contact drilling equipment, and the connection firmness of the drilling equipment and the deep hole twist drill can be affected along with the continuous generation of the metal waste materials.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the deep hole twist drill comprises a drill bit and a drill rod, wherein the drill bit is positioned at the front end of the drill rod, a drill shank is positioned at the rear end of the drill rod, an installation pin groove is formed in the inner wall of the outer wall of the rear half section of the drill shank, a chip blocking device is sleeved outside the drill shank near the front side, and a twist spiral groove is formed in the circular outer wall of the drill rod.

Preferably, the chip blocking device comprises a fixed sleeve, a conical chip blocking plate, embedded screws, strip-shaped cutting blades and a fixed rod, wherein the fixed sleeve is arranged at the rear end of the conical chip blocking plate, the conical chip blocking plate and the fixed sleeve are sleeved outside the round outer wall of the drill shank, the fixed sleeve and the drill shank are fixedly connected through the embedded screws, the fixed rods are arranged on the outer walls of the front ends of the upper side and the lower side of the conical chip blocking plate, and the strip-shaped cutting blades are connected on the outer walls of the front ends of the positions, close to the center, of the fixed rods and the conical chip blocking plate.

Preferably, the tip of the front end of the drill bit is coincident with the center of a drill rod on the same straight line, and the diameter of the drill rod is the same as that of the drill shank.

Preferably, the outer wall of the drill rod, the inner wall of the spiral groove of the twist and the outer wall of the drill handle are smooth and have no burrs, and the interior of the drill handle is solid.

Preferably, the cross section of the conical chip baffle is circular, the outer wall of the front end of the conical chip baffle is provided with a backward inclined plane, and the outer wall of the front end of the conical chip baffle is subjected to polishing treatment.

Preferably, the circular inner wall of the fixed sleeve is attached to the circular outer wall of the drill shank, and the fixed sleeve can drive the conical chip baffle to move back and forth outside the drill shank.

Compared with the prior art, the utility model provides the deep hole twist drill, which has the following beneficial effects:

according to the utility model, the novel chip blocking device is additionally arranged outside the drill shank of the deep hole twist drill close to the front side, and the chip blocking device can be used for adjusting the position according to the installation depth of the drill shank, so that the deep hole twist drill is installed and fixed through the drill shank, when equipment drills materials through the deep hole twist drill, metal waste generated during drilling can be connected together and move towards the equipment, the chip blocking device can block the metal waste generated during drilling, the metal waste generated during drilling can be prevented from blocking and damaging xi of drilling equipment, and the chip blocking device can cut off the connected metal waste when blocking the metal waste, so that the metal waste can fall smoothly and the normal work of the drilling equipment can not be influenced.

Drawings

Fig. 1 is a schematic diagram of a deep hole twist drill according to the present utility model.

Fig. 2 is a schematic plan view of a chip blocking device according to the present utility model.

In the figure: 1. a drill bit; 2. a drill rod; 3. twist spiral groove; 4. a chip blocking device; 5. a drill shank; 6. mounting pin grooves; 7. a fixed sleeve; 8. a conical chip baffle; 9. an embedded screw; 10. a strip-shaped cutting blade; 11. and a fixing rod.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a deep hole twist drill shown in fig. 1-2, which comprises a drill bit 1 and a drill rod 2, wherein the drill bit 1 is arranged at the front end of the drill rod 2, the rear end of the drill rod 2 is provided with a drill shank 5, the inner wall of the outer wall of one side of the rear half section of the drill shank 5 is provided with a mounting pin groove 6, the drill shank 5 is sleeved with a chip blocking device 4 near the outer part of the front side, the inner part of the circular outer wall of the drill rod 2 is provided with a twist spiral groove 3, the tip of the front end of the drill bit 1 is coincident with the center of the drill rod 2 on the same straight line, the diameter of the drill rod 2 is the same as the diameter of the drill shank 5, and when the drill bit 1 is in contact with a drilling position, the drill bit 1 and the tip are coincident with the center of the drill rod 2 on the same straight line, so that the drill rod 2 can be smoothly drilled into a material through the twist spiral groove 3 at a drilling hole opening, and the drilling operation can be smoother and more efficient.

As shown in fig. 1 and 2, the chip blocking device 4 comprises a fixed sleeve 7, a conical chip blocking plate 8, embedded screws 9, strip-shaped cutting blades 10 and a fixed rod 11, the rear end of the conical chip blocking plate 8 is provided with the fixed sleeve 7, the conical chip blocking plate 8 and the fixed sleeve 7 are sleeved outside the round outer wall of the drill shank 5, the fixed sleeve 7 and the drill shank 5 are fixedly connected through the embedded screws 9, the fixed rods 11 are arranged on the front end outer walls of the upper side and the lower side of the conical chip blocking plate 8, the strip-shaped cutting blades 10 are connected on the front end outer walls of the two fixed rods 11 and the conical chip blocking plate 8 close to the center, the section of the conical chip blocking plate 8 is round, the front end outer wall of the conical chip blocking plate 8 adopts a slope which is inclined backwards, the front end outer wall of the conical chip blocking plate 8 adopts polishing treatment, the round inner wall of the fixed sleeve 7 is attached to the round outer wall of the drill shank 5, the fixed cover 7 can drive toper and keep off bits board 8 and move around the outside of drill shank 5, unscrew embedded screw 9 after, can drive toper and keep off bits board 8 and slide around the outside of drill shank 5 to can carry out position control to keeping off bits device 4, can avoid the drill shank 5 to install the installation fixed operation of drill shank 5 when inside the hole site of drilling equipment like this, and the connectivity metal waste material that the drilling in-process produced can outwards be guided away by toper and keep off bits board 8's inclined plane outer wall when keeping off bits board 8, and at the in-process of guiding, two strip cutting off blades 10 also can real-time cut off metal waste material, thereby can avoid the metal waste material that produces to link together all the time and influence deep hole twist drill's normal drilling operation.

As shown in fig. 1, the outer wall of the drill rod 2, the inner wall of the spiral groove 3 and the outer wall of the drill shank 5 are smooth and have no burrs, the interior of the drill shank 5 is solid, and the solid drill shank 5 can resist high-strength acting force when rotating at high speed and punching through the drill rod 2 and the drill bit 1, so that the occurrence of breakage can be avoided.

The working principle of the utility model is as follows: when the deep hole twist drill is used, firstly, a box for storing the deep hole twist drill is required to be taken out, then a box cover is opened, the deep hole twist drill in the box is taken out, then the taken out deep hole twist drill is required to be placed at the installation position of drilling equipment, at the moment, the drill shank 5 is required to be aligned with the installation hole position of the drilling equipment, then the drill shank 5 is inserted into the installation hole position, and when the drill shank is inserted, the installation pin groove 6 on the drill shank 5 is completely sleeved outside a pin shaft in the installation hole position, then the drill shank 5 is fixed through a special screw, and because the pin shaft in the installation hole position is positioned in the installation pin groove 6, the drilling equipment can normally drive the deep hole twist drill to rotate at a high speed, finally lubricating oil is required to be smeared on the outer wall of the deep hole twist drill, and then the deep hole twist drill can be normally put into use.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a deep hole twist drill, includes drill bit (1) and drilling rod (2), is located drill bit (1) of drilling rod (2) front end, is located drill shank (5) of drilling rod (2) rear end, its characterized in that: the inner wall of the outer wall of one side of the rear half section of the drill handle (5) is provided with a mounting pin groove (6), the drill handle (5) is sleeved with a chip blocking device (4) close to the outer part of the front side, and the inner part of the circular outer wall of the drill rod (2) is provided with a twist spiral groove (3);

the chip blocking device (4) comprises a fixed sleeve (7), a conical chip blocking plate (8), embedded screws (9), strip-shaped cutting blades (10) and a fixed rod (11), wherein the fixed sleeve (7) is arranged at the rear end of the conical chip blocking plate (8), the conical chip blocking plate (8) and the fixed sleeve (7) are sleeved outside the round outer wall of the drill shank (5), the fixed sleeve (7) and the drill shank (5) are fixedly connected through the embedded screws (9), the fixed rods (11) are arranged on the front end outer walls of the upper side and the lower side of the conical chip blocking plate (8), and the strip-shaped cutting blades (10) are connected on the front end outer walls of the front ends, close to the center, of the fixed rods (11) and the conical chip blocking plate (8).

2. The deep hole twist drill of claim 1 wherein: the tip of the front end of the drill bit (1) is coincident with the center of a drill rod (2) on the same straight line, and the diameters of the drill rod (2) and the drill handle (5) are the same.

3. The deep hole twist drill of claim 1 wherein: the outer wall of the drill rod (2), the inner wall of the spiral groove (3) and the outer wall of the drill handle (5) are smooth and have no burrs, and the interior of the drill handle (5) is solid.

4. The deep hole twist drill of claim 1 wherein: the cross section of the conical chip baffle (8) is circular, the outer wall of the front end of the conical chip baffle (8) adopts a backward inclined slope, and the outer wall of the front end of the conical chip baffle (8) adopts polishing treatment.

5. The deep hole twist drill of claim 1 wherein: the circular inner wall of the fixed sleeve (7) is attached to the circular outer wall of the drill shank (5), and the fixed sleeve (7) can drive the conical chip baffle (8) to move back and forth outside the drill shank (5).