Deep hole drill bit

Abstract

The utility model relates to the technical field of deep hole drill bit machining, in particular to a deep hole drill bit which comprises a drill bit body and a drill bit rod which are fixedly connected, a fixing hole is formed in the center of the drill bit body in a penetrating mode, and the bottom of the drill bit rod is clamped into the fixing hole. A plurality of axial chip removal notches are formed in the section, close to the drill bit rod, of the drill bit at equal intervals, the multiple chip removal notches are annularly distributed with the fixing hole as the center, and a mounting platform is formed between every two adjacent chip removal notches; the end, close to the drill bit rod, of the drill bit is provided with at least one tool bit assembly, the tool bit assembly is fixed to the installation platform, and the tool bit assembly comprises a first tool bit used for drilling and a second tool bit used for trimming the side wall. According to the deep hole drill bit, the overall sharpness is improved, rapid drilling is achieved, the surface of a hole is smooth, and sweeps at the edge of a screw hole and in the screw hole can be effectively removed.

Description

TECHNICAL FIELD

[0001] The utility model relates to deep hole drill bit processing technical field, concretely relates to a deep hole drill bit. BACKGROUND

[0002] Drill bit is a kind of tool for drilling hole on hard material, generally used in the processing of metal, wood, plastic and stone etc. Drill bit is usually made of metal, with sharp cutting edge, can be removed by rotating and advancing mode material, to form hole. Traditional drill bit is generally composed of drill tip and drill shank, mainly by drill tip during use.

[0003] At present, when drill bit is used to drill hole on production reel stand (wooden well frame), due to its limited sharpness, waste (poplar silk core) is adhered to the edge of silk hole and cannot be scraped off, which affects the appearance of the whole stand, and the waste needs to be manually cleaned out of the silk hole, so as to screw on the nut cap, which affects the work efficiency. Therefore, a deep hole drill bit is needed to solve the above problems. SUMMARY

[0004] In order to solve the technical problem that the drill bit has limited sharpness and the generated waste is adhered to the edge of the silk hole and cannot be scraped off, the utility model provides a deep hole drill bit, the overall sharpness is improved, the rapid drilling is realized, the surface of the hole is smooth, and the waste at the edge of the silk hole and inside the silk hole can be effectively removed.

[0005] The utility model provides a deep hole drill bit, including fixed connection's drill bit and drill rod, the central position of drill bit is through the setting of fixed hole, the bottom of drill rod is inserted into fixed hole;Drill bit is close to the section of equal interval of drill rod and is provided with a plurality of axial chip removal notches, a plurality of chip removal notches are arranged in ring around fixed hole, and installation platform is formed between adjacent two chip removal notches;Drill bit is close to the end of drill rod and is equipped with at least one cutter head assembly, cutter head assembly is fixed to installation platform, cutter head assembly includes first cutter head for drilling and second cutter head for trimming side wall.Drill rod, drill bit are punched into stand in turn, first cutter head and second cutter head function, improve the overall sharpness, and can effectively remove the waste in silk hole.

[0006] Further, each installation platform is inclined, the width of each installation platform increases from top to bottom, the upper surface of each installation platform is provided with a slope, the first cutter head and the second cutter head are located on both sides of the installation platform, the top of the first cutter head and the second cutter head is flush, and the side of the installation platform where the first cutter head is located to the side of the installation platform where the second cutter head is located is arranged from high to low. The installation platform is provided with a slope to further facilitate the waste to be discharged outside the silk hole.

[0007] Further, the top of each first cutter head is obliquely arranged, and the extension line of the cutting edge of each first cutter head passes through the center of the fixing hole; each second cutter head is a conical structure, and the cutting edge of each second cutter head is vertically arranged and flush with the outer side wall of the drill bit. The top of the first cutter head is obliquely arranged, and the cutting edge of the second cutter head is vertically arranged, which are more sharp, can better realize drilling, effectively remove the waste at the edge of the hole, and realize smooth surface of the hole.

[0008] Further, each chip removal notch is obliquely arranged, and the width of each chip removal notch decreases from top to bottom. The chip removal notch is obliquely arranged, so that the waste is further conveniently discharged to the outside of the hole.

[0009] Further, the middle part of the drill bit is provided with a locking screw hole, the locking screw hole is communicated with the fixing hole, the locking screw hole extends along the radial direction of the drill bit, the fixing hole extends along the axial direction of the drill bit, a screw is threadedly connected on the locking screw hole, and the screw can abut against the bottom of the drill rod located in the fixing hole. When the bottom of the drill rod is clamped into the fixing hole, the screw is fixed on the locking screw hole and abuts against the drill rod, so that the drill rod is stably fixed on the drill bit.

[0010] Further, the drill bit is a three-section structure, the width of the drill bit decreases from top to bottom, and the bottom of the drill bit is used for fixed connection with a drill chuck or an output shaft of a motor.

[0011] Further, the drill rod is a screw rod, and the outer surface of the drill rod is provided with threads. The threads are arranged, so that the drill rod is further convenient for drilling.

[0012] Further, the top of the drill rod is provided with a drill tip, and the drill tip is located above the threads on the drill rod. The drill tip is arranged, so that the drill rod is further convenient for drilling.

[0013] Compared with the prior art, the drill bit has the following technical effects:

[0014] When the deep hole drill bit drills the frame (wooden well frame) for producing coiled material, the drill rod and the drill bit are punched into the frame in sequence, the first cutter head and the second cutter head are used, the overall sharpness is improved, rapid drilling is realized, the surface of the hole is smooth, the waste (poplar silk pulp, i.e. sawdust and shavings) at the edge of the hole can be effectively removed, and manual manual screw cap is facilitated. And the arranged chip removal notch can completely take out the waste in the hole. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structure schematic view of the deep hole drill bit of the utility model;

[0016] Figure 2is a sectional structure schematic view of the deep hole drill bit of the utility model;

[0017] Figure 3 is the structure schematic view of the deep hole drill bit of the utility model Figure 1 ;

[0018] Figure 4 is the structure schematic view of the drill rod of the utility model;

[0019] The label in the drawing is:

[0020] 1, drill bit; 11, mounting platform; 12, first cutter head 1; 13, second cutter head; 14, chip removal notch; 15, locking screw hole;

[0021] 2, drill rod; 21, thread; 22, drill tip. Specific implementation

[0022] The utility model is further illustrated below in combination with the drawings and specific implementation.

[0023] As Figures 1 to 4 shown, a kind of deep hole drill bit, including fixedly connected drill bit 1 and drill rod 2, the central position of the drill bit 1 is provided with fixed hole, the bottom of the drill rod 2 is inserted into fixed hole;The section of the drill bit 1 close to drill rod 2 is provided with multiple axial chip removal notches 14, multiple the chip removal notches 14 are arranged in ring with fixed hole as center, and installation platform 11 is formed between adjacent two chip removal notches 14;The end of the drill bit 2 close to drill rod 2 is equipped with at least one cutter head assembly, the cutter head assembly is fixed to installation platform 11, and the cutter head assembly includes first cutter head 12 for drilling and second cutter head 13 for trimming side wall. Specifically, first cutter head 12, second cutter head 13 and chip removal notch 14 are located at the top of drill bit 1. The chip removal notch and blade structure in this embodiment can be set to 2, 4 or 6 or other number. First cutter head 12 and second cutter head 13 in the embodiment are selected to be fixed on installation platform 11 by welding mode.

[0024] When the deep hole drill bit of the embodiment is used to drill the frame (wooden well frame) for producing coiled material, drill rod 2 and drill bit 1 are punched into the frame in turn, first cutter head 12 and second cutter head 13 are in action, the overall sharpness is improved, rapid drilling is realized, the surface of hole is smooth, waste chip (poplar silk pulp, i.e. sawdust and shavings) at the edge of silk hole can be effectively removed, and it is convenient for subsequent manual screw nut mounting. And the chip removal notch 14 arranged can completely take out the waste chip inside the silk hole. After long-term use, if first cutter head 12 and second cutter head 13 appear blunt, it is also convenient to grind or replace.

[0025] As an implementable mode, each of the installation platforms 11 is arranged in an inclined manner, the width of each of the installation platforms 11 gradually increases from top to bottom, and the upper surface of each of the installation platforms 11 is provided with a slope. The first cutter head 12 and the second cutter head 13 are located on the two sides of the installation platform 11, the top of the first cutter head 12 is flush with the top of the second cutter head 13, and the side of the installation platform 11 where the first cutter head 12 is located to the side of the installation platform 11 where the second cutter head 13 is located is arranged from high to low. The installation platform 11 of the embodiment is provided with a slope to further facilitate the discharge of the waste to the outside of the wire hole. Further, the first cutter head 12 is parallel to the installation platform 11, and the second cutter head 13 is perpendicular to the installation platform 11.

[0026] As an implementable mode, the top of each of the first cutter heads 12 is arranged in an inclined manner, and the extension line of the cutting edge of each of the first cutter heads 12 passes through the center of the fixed hole. When drilling, the bottom of the hole is drilled by the action of the cutting edge of the first cutter head 12. Each of the second cutter heads 13 is a conical structure, and the cutting edge (not shown in the figure) of each of the second cutter heads 13 is arranged vertically and flush with the outer side wall of the drill bit 1. When drilling, the side wall of the hole is drilled by the action of the cutting edge of the second cutter head 13. The top of the first cutter head 12 is arranged in an inclined manner, and the cutting edge of the second cutter head 13 is arranged vertically, both of which are sharper, can better realize drilling, effectively remove the waste at the edge of the wire hole, and realize the smooth surface of the hole.

[0027] As an implementable mode, each of the chip removal notches 14 is arranged in an inclined manner, and the width of each of the chip removal notches 14 gradually decreases from top to bottom. The chip removal notch 14 is designed in this structure to further facilitate the discharge of the waste to the outside of the wire hole.

[0028] As an implementable mode, the middle part of the drill bit 1 is provided with a locking screw hole 15, the locking screw hole 15 is in communication with the fixed hole, the locking screw hole 15 extends along the radial direction of the drill bit 1, the fixed hole extends along the axial direction of the drill bit 1, and a screw is threadedly connected to the locking screw hole 15. The screw can abut against the bottom of the drill rod 2 located in the fixed hole. When the bottom of the drill rod 2 is clamped into the fixed hole, the screw is fixed on the locking screw hole 15 and abuts against the drill rod 2, so that the drill rod 2 is stably fixed on the drill bit 1.

[0029] As an implementable mode, the drill bit 1 is a three-section structure, the width of the drill bit 1 gradually decreases from top to bottom, and the bottom of the drill bit 1 is used for fixed connection with the output shaft of a drill chuck or a motor. The drill bit 1 of the embodiment is integrally formed, the deep hole drill bit is sleeved with the output shaft of the external drill chuck or motor through the drill bit 1, and the drilling operation is performed in the later period.

[0030] As an embodiment, the drill rod 2 is a screw rod, and the outer surface of the drill rod 2 is provided with a thread 21. The thread 21 is provided so that the drill rod 2 is further convenient for drilling. The drill rod 2 of the embodiment is integrally formed. The part of the drill rod 2 without the thread 21 in the embodiment is the bottom of the drill rod 2.

[0031] As an embodiment, the top of the drill rod 2 is provided with a drill tip 22, which is above the thread 21 on the drill rod 2. The drill tip 22 is provided so that the drill rod 2 is further convenient for drilling.

[0032] The above-mentioned embodiments are only the preferred embodiments of the present application, and are only used to explain the present application, and are not intended to limit the scope of the present application. For those skilled in the art, of course, other embodiments can be easily made by substitution or change according to the technical content disclosed in the present application, and therefore, any changes and improvements made within the principles and technical conditions of the present application shall be included in the scope of the patent application of the present application.

Claims

1. A deep hole drill comprising a fixedly connected drill head (1) and drill shank (2), characterized in that, The center position of the drill bit (1) is provided with a fixing hole, and the bottom of the drill rod (2) is clamped into the fixing hole; a plurality of axial chip removal notches (14) are arranged at equal intervals on the section of the drill bit (1) close to the drill rod (2), the plurality of chip removal notches (14) are arranged in a ring shape with the fixing hole as the center, and an installation platform (11) is formed between adjacent two chip removal notches (14); at least one cutter head assembly is arranged at the end of the drill bit (1) close to the drill rod (2), the cutter head assembly is fixed to the installation platform (11), and the cutter head assembly comprises a first cutter head (12) for drilling and a second cutter head (13) for trimming the side wall.

2. The deep hole drill bit of claim 1, wherein, Each installation platform (11) is arranged obliquely, the width of each installation platform (11) increases from top to bottom, and the upper surface of each installation platform (11) is provided with a slope; the first cutter head (12) and the second cutter head (13) are located on the two sides of the installation platform (11), the top of the first cutter head (12) and the second cutter head (13) is flush, and the side of the installation platform (11) where the first cutter head (12) is located to the side of the installation platform (11) where the second cutter head (13) is located is arranged from high to low.

3. The gun drill according to claim 1, wherein, The top of each first cutter head (12) is arranged obliquely, and the extension line of the cutting edge of each first cutter head (12) passes through the center of the fixing hole; each second cutter head (13) is a conical structure, the cutting edge of each second cutter head (13) is arranged vertically and flush with the outer side wall of the drill bit (1).

4. The gun drill according to claim 1, wherein, Each chip removal notch (14) is arranged obliquely, and the width of each chip removal notch (14) decreases from top to bottom.

5. The gun drill according to claim 1, wherein, A locking screw hole (15) is arranged in the middle of the drill bit (1), the locking screw hole (15) is in communication with the fixing hole, the locking screw hole (15) extends in the radial direction of the drill bit (1), the fixing hole extends in the axial direction of the drill bit (1), a screw is threadedly connected to the locking screw hole (15), and the screw can abut against the bottom of the drill rod (2) located in the fixing hole.

6. The gun drill according to claim 1, wherein, The drill bit (1) is a three-section structure, the width of the drill bit (1) decreases from top to bottom, and the bottom of the drill bit (1) is used for fixed connection with the output shaft of a drill chuck or a motor.

7. The gun drill according to claim 1, wherein The drill rod (2) is a screw rod, and the outer surface of the drill rod (2) is provided with threads (21).

8. The gun drill according to claim 7, characterized in that A drill tip (22) is arranged at the top of the drill rod (2), and the drill tip (22) is located above the threads (21) on the drill rod (2).

Images