Novel drill bit alloy and drill bit structure thereof
By incorporating cutting edges, chip guide grooves, hollowed-out recessed areas, and inclined chip guide grooves into the drill bit alloy, the problem of insufficient chip removal function of the drill bit alloy is solved, achieving efficient chip removal and long service life of the drill bit alloy, and improving drilling efficiency and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG JIEHUI TOOLS CO LTD
- Filing Date
- 2025-06-06
- Publication Date
- 2026-05-19
AI Technical Summary
Existing drill bit alloys have shortcomings in chip removal, leading to increased wear, reduced service life, and limited applicability.
A novel drill bit alloy is designed, comprising a central drill section and an extended drill arm, with cutting edges, chip guide grooves, hollowed-out recessed areas, and inclined chip guide grooves, combined with spiral chip guide grooves and V-shaped grooves to improve chip removal performance and connection stability.
It improves the sharpness and service life of drill bit alloys, reduces wear, enhances drilling efficiency and operational stability, prevents chip accumulation, and increases applicability.
Smart Images
Figure CN224254289U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of drill bit technology, specifically relating to a novel drill bit alloy and its drill bit structure. Background Technology
[0002] A drill bit is a drilling structure that includes a drill bit alloy and a drill rod. The outer surface of the drill rod has a spiral chip guide groove, and the drill bit alloy is fixed to the head of the drill rod. Existing drill bit alloys include a drill bit body and reinforcing ribs, such as those shown in CN202022873224.7. Although these can meet the general usage requirements, they are not conducive to chip removal. Furthermore, the lack of a corresponding chip guide structure makes the drill bit alloy prone to wear, thereby reducing its service life and limiting its applicability. Utility Model Content
[0003] The purpose of this invention is to provide a novel drill bit alloy and its drill bit structure with a reasonable structural design that facilitates chip removal.
[0004] The technical solution to achieve the purpose of this utility model is a new type of drill bit alloy, including a central drill part and several extended drill arms integrally formed on the side of the central drill part. The front end of the extended drill arms is integrally formed with a cutting edge, and the front end of the central drill part is integrally formed with a connecting cross edge connected to the end of the cutting edge. The side of the cutting edge is provided with a chip guide groove, and the chip guide groove is located on the wide side slope of the cutting edge.
[0005] The central drill bit and the extended drill arm have a hollowed-out recessed area at the middle of their overall rear end, and the hollowed-out recessed area to the rear end edge of the extended drill arm is an inclined transition surface.
[0006] A further preferred embodiment is that the outer end face of the extended drill arm away from the central drill part is provided with an inclined chip guide groove, and the inclined direction of the inclined chip guide groove is such that one end of the cutting edge is inclined towards the hollowed-out recessed area.
[0007] A further preferred embodiment is that the chip guide groove is a nail-shaped groove, and the top of the nail-shaped groove extends to the edge side of the cutting edge.
[0008] A further preferred embodiment is that the number of the extended drill arms is three, four, five, or six.
[0009] A novel drill bit alloy drill bit structure includes a drill rod with a helical chip guide groove, the head of which is provided with the aforementioned drill bit alloy.
[0010] A further preferred embodiment is that a V-shaped groove connected to a spiral chip guide groove is provided on the outer wall of the drill rod at the end near the drill bit alloy.
[0011] The V-shaped groove is located between adjacent extended drill arms.
[0012] A further preferred embodiment is that the V-shaped groove is inclined towards the spiral chip guide groove at the head of the self-drilling rod.
[0013] A further preferred embodiment is that the width of the spiral chip guide grooves of the drill rod is the same.
[0014] A further preferred embodiment is that the width of the spiral chip guide groove on the drill rod near the drill bit alloy is smaller than the width of the spiral chip guide groove on the drill rod near the drill shank.
[0015] A further preferred embodiment is that the drill shank of the drill rod is a round shank, a square shank, or a universal five-hole drill shank.
[0016] This utility model has positive effects: The alloy structure of the drill bit is reasonably designed. It has a chip guide groove on the side of the cutting edge, and together with the hollowed-out recessed area and transition surface, it can not only increase the contact area with the drill rod and improve the stability of use, but also remove chips through the chip guide groove during drilling, which improves the sharpness of the cutting edge and extends its service life. At the same time, timely chip removal also helps to improve drilling efficiency and has strong applicability.
[0017] Furthermore, the outer end face of the extended drill arm has an inclined chip guide groove, which helps to improve the ease of drilling, reduce drilling resistance, and reduce wear on the drill bit alloy. When the drill rotates, the side chip guide groove can also prevent the drill bit from jumping and vibrating, which can reduce the bouncing and vibration force during drilling, improve the smoothness and effectiveness of drilling operation, and also improve drilling efficiency.
[0018] Furthermore, the drill bit structure features the aforementioned drill bit alloy, which helps reduce wear on the drill bit alloy, extend its service life, improve chip removal performance, increase drilling efficiency, and, in conjunction with the V-shaped groove, prevent chip accumulation, enhance chip removal effectiveness, and has strong applicability. Attached Figure Description
[0019] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:
[0020] Figure 1 This is a first schematic diagram of the present utility model;
[0021] Figure 2 for Figure 1 Schematic diagram of the structure when combined with drill pipe;
[0022] Figure 3 This is a schematic diagram of the second structure of this utility model;
[0023] Figure 4 for Figure 3 Schematic diagram of the structure when combined with drill pipe;
[0024] Figure 5 This is a schematic diagram of the third structure of this utility model;
[0025] Figure 6 for Figure 5 Schematic diagram of the structure when combined with drill pipe;
[0026] Figure 7 This is a schematic diagram of the fourth structure of this utility model;
[0027] Figure 8 for Figure 7 Schematic diagram of the structure when combined with drill pipe.
[0028] Reference numerals: 1. Central drill section, 2. Extended drill arm, 3. Cutting edge, 4. Connecting chisel edge, 5. Cutting chip guide groove, 6. Hollowed-out recessed area, 7. Inclined transition surface, 8. Inclined chip guide groove, 9. Spiral chip guide groove, 10. Drill rod, 11. V-shaped groove. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] Example 1
[0031] See Figure 1 A novel drill bit alloy includes a central drill section 1 and several extended drill arms 2 integrally formed on the side of the central drill section. The front ends of the extended drill arms are integrally formed with cutting edges 3. The front ends of the central drill section are integrally formed with connecting chisel edges 4 connected to the ends of the cutting edges. A chip guide groove 5 is provided on the side of the cutting edge, and the chip guide groove is located on the wide side slope of the cutting edge. The chip guide groove is a fingernail-shaped groove, and the top of the fingernail-shaped groove extends to the sharp edge side of the cutting edge. In this embodiment, the cutting edge and chisel edge are conventional structures of the prior art, and therefore are not described in detail. Simultaneously, the chip guide groove is located in the middle of the side of the cutting edge. The chip guide groove can realize the chip guiding function and can also increase the sharpness of the cutting edge. During drilling, chip guiding and removal can reduce wear of the drill bit alloy, increase service life, and also help improve drilling efficiency.
[0032] In practical applications, a hollowed-out recessed area 6 is provided in the middle of the overall rear end of the central drill part and the extended drill arm, and the hollowed-out recessed area to the rear end edge of the extended drill arm is an inclined transition surface 7. This structure increases the contact area with the drill rod, thereby improving the stability and reliability of the connection. The inclined transition surface also increases the stress-bearing contact area between the extended drill arm and the drill rod.
[0033] In practical applications, the outer end face of the extended drill arm, away from the central drill section, is provided with an inclined chip guide groove 8. The inclined chip guide groove is inclined from one end of the cutting edge towards the hollowed-out recessed area. This inclined chip guide groove improves chip removal performance and effectively prevents drill bit jump and vibration during drilling rotation, reducing the bouncing and vibration forces during drilling and improving operational stability and efficiency. In practical applications, the inclined chip guide groove can be V-shaped or U-shaped.
[0034] In this embodiment, the number of extended drill arms is three.
[0035] This utility model has positive effects: The alloy structure of the drill bit is reasonably designed. It has a chip guide groove on the side of the cutting edge, and together with the hollowed-out recessed area and transition surface, it can not only increase the contact area with the drill rod and improve the stability of use, but also remove chips through the chip guide groove during drilling, which improves the sharpness of the cutting edge and extends its service life. At the same time, timely chip removal also helps to improve drilling efficiency and has strong applicability.
[0036] Furthermore, the outer end face of the extended drill arm has an inclined chip guide groove, which helps to improve the ease of drilling and also reduces the wear of the drill bit alloy. When the drill rotates, the chip guide groove on the side can also prevent the drill bit from jumping and vibrating, which can reduce the bouncing and vibration force during drilling, improve the smoothness and effectiveness of drilling operation, and also improve drilling efficiency.
[0037] Example 2
[0038] See Figure 2This embodiment discloses the structural scheme of Embodiment 1 combined with a drill rod, specifically a novel drill bit structure based on a drill bit alloy. It includes a drill rod 10 with a spiral chip guide groove 9, the head of which is provided with the aforementioned drill bit alloy. Furthermore, in practical applications, a V-shaped groove 11 communicating with the spiral chip guide groove is provided on the outer wall of the drill rod end near the drill bit alloy; the V-shaped groove is located between adjacent extended drill arms; during processing, the V-shaped groove slopes from the head of the drill rod towards the spiral chip guide groove. The drill shank of the drill rod is a round shank, square shank, or a five-flute universal drill shank. This structure improves chip removal performance, prevents powder accumulation, increases drilling efficiency, enhances chip guiding performance, improves powder discharge efficiency, and increases chip removal speed. In practical applications, the depth of the V-shaped groove is deeper at the end near the drill bit alloy and shallower at the end near the spiral chip guide groove.
[0039] In practical applications, the width of the spiral chip guide grooves on the drill rod is the same. Alternatively, the width of the spiral chip guide groove near the drill bit alloy is smaller than the width of the spiral chip guide groove near the drill shank. The smaller width of the spiral chip guide groove near the drill bit alloy allows for rapid rotation and removal of chips from the hole, while the larger width of the spiral chip guide groove near the drill shank provides a larger rear-end chip removal space, improving chip removal performance, preventing chip accumulation, and increasing drilling efficiency.
[0040] Furthermore, the drill bit structure features the aforementioned drill bit alloy, which reduces drilling resistance, helps reduce wear on the drill bit alloy, extends its service life, and also improves chip removal performance and drilling efficiency. In addition, the V-shaped groove can prevent chip accumulation and improve chip removal effectiveness, making it highly versatile.
[0041] Example 3
[0042] See Figure 3 This embodiment is basically the same as embodiment 1, except that: in this embodiment, the number of extended drill arms is four.
[0043] Example 4
[0044] See Figure 4 This embodiment discloses the structural scheme of embodiment 3 when combined with drill rod, which is basically the same as that of embodiment 2, except that when the number of extended drill arms is four, the two symmetrical V-shaped grooves are inclined, and the remaining two are vertical.
[0045] Example 5
[0046] See Figure 5 This embodiment is basically the same as embodiment 1, except that the number of extended drill arms in this embodiment is five.
[0047] Example 6
[0048] See Figure 6 This embodiment discloses the structural scheme of embodiment 5 when combined with drill pipe, which is basically the same as that of embodiment 2, except that the number of extended drill arms is different.
[0049] Example 7
[0050] See Figure 7 This embodiment is basically the same as embodiment 1, except that the number of extended drill arms in this embodiment is six.
[0051] Example 8
[0052] See Figure 8 This embodiment discloses the structural scheme of embodiment 7 when combined with drill pipe, which is basically the same as that of embodiment 2, except that the number of extended drill arms is different.
[0053] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural parts described in the instruction manual can also be processed without any doubt based on existing technical common sense. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.
[0054] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all embodiments here. However, these obvious variations or modifications derived from the essential spirit of this utility model still fall within the protection scope of this utility model.
Claims
1. A novel drill bit alloy, comprising a central drill portion and a plurality of extended drill arms integrally formed on the side of the central drill portion, wherein the front ends of the extended drill arms are integrally formed with cutting edges, and the front ends of the central drill portion are integrally formed with connecting chisels connected to the ends of the cutting edges, characterized in that: The cutting edge is provided with a chip guide groove on its side, and the chip guide groove is located on the wide side slope of the cutting edge. The central drill bit and the extended drill arm have a hollowed-out recessed area at the middle of their overall rear end, and the hollowed-out recessed area to the rear end edge of the extended drill arm is an inclined transition surface.
2. The novel drill bit alloy according to claim 1, characterized in that: An inclined chip guide groove is provided on the outer end face of the extended drill arm away from the central drill part. The inclined chip guide groove is inclined in the direction of the cutting edge towards the hollowed-out recessed area.
3. A novel drill bit alloy according to claim 1 or claim 2, characterized in that: The chip guide groove is a nail-shaped groove, and the top of the nail-shaped groove extends to the edge side of the cutting edge.
4. The novel drill bit alloy according to claim 3, characterized in that: The number of the extended drill arms is three, four, five, or six.
5. A novel drill bit structure of a drill bit alloy, comprising a drill rod with helical chip guide grooves, characterized in that: The head of the drill pipe is provided with the drill bit alloy as described in any one of claims 1 to 4.
6. The drill bit structure of a novel drill bit alloy according to claim 5, characterized in that: The drill rod has a V-shaped groove on the outer wall of the end closest to the drill bit alloy that communicates with the spiral chip guide groove. The V-shaped groove is located between adjacent extended drill arms.
7. The drill bit structure of a novel drill bit alloy according to claim 6, characterized in that: The V-shaped groove slopes from the head of the drill rod towards the spiral chip guide groove.
8. The drill bit structure of a novel drill bit alloy according to claim 7, characterized in that: The width of the spiral chip guide grooves on the drill pipe is the same.
9. The drill bit structure of a novel drill bit alloy according to claim 7, characterized in that: The width of the spiral chip guide groove on the drill rod near the drill bit alloy is smaller than the width of the spiral chip guide groove on the drill rod near the drill shank.
10. The drill bit structure of a novel drill bit alloy according to claim 8 or claim 9, characterized in that: The drill shank of the drill rod is a round shank, a square shank, or a universal five-hole drill shank.