CN213591841U - Novel deep hole drill bit - Google Patents
Novel deep hole drill bit Download PDFInfo
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- CN213591841U CN213591841U CN202022398861.3U CN202022398861U CN213591841U CN 213591841 U CN213591841 U CN 213591841U CN 202022398861 U CN202022398861 U CN 202022398861U CN 213591841 U CN213591841 U CN 213591841U
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Abstract
The utility model discloses a novel deep hole drill bit, main technical characterized in that: transition by the fillet between drill stem and the drilling rod, set up the spiral chip groove of an equidistance on the external diameter of drilling rod and set up the drilling sword at the collinear of chip groove and drilling rod external diameter, and drilling sword circumference diameter is greater than the external diameter of drilling rod, be provided with the rake face of two symmetries at the tip of drilling rod, the back knife face adjacent with the rake face respectively, main cutting edge is adjacent with the back knife face respectively and main cutting edge links to each other with the chisel edge respectively, set up two sets of equidistant spiral holes that are used for the fluid medium circulation in the inside of drill stem and drilling rod, spiral hole one end link up in the tip of drill stem, the other end of spiral hole link up in the rake face of drilling rod, the back knife face. The beneficial effects are that: effectively improve the radiating effect of drill bit in the deep hole drilling in-process and be convenient for the discharge of smear metal, improve machining efficiency, and then reduce the risk of drill bit rupture, make the cutting performance of drill bit obtain further promotion.
Description
Technical Field
The utility model relates to a drill bit, especially a novel deep hole drill bit.
Background
The drill bit is in metal cutting process, realize the drilling tool of round hole in the spare part, in the metalworking industry, the folk trade of all the time is the adage "the lathe worker is afraid of the stock, the driller is afraid of the long hole", its latter meaning means current drill bit when processing the deep slot hole, the drill bit stretches into in the work piece, lead to the smear metal of metal to discharge the difficulty, make the cutting coolant liquid difficult to enter into the work piece simultaneously, make the drill bit heated the stress structure who leads to not good, lead to the drill bit rupture in the work piece, not only damage the drill bit, make the processing part cause unable prosthetic defect and scrap. Generally, in order to avoid the phenomenon, when a part is machined, only the feeding amount of a drill bit can be controlled, namely the drill bit is withdrawn from a workpiece for chip removal after a certain distance is drilled, and cutting cooling liquid is poured to cool the drill bit, the safety of the drill bit and the workpiece can be further ensured by repeating the process, the machining time is long, the machining efficiency is low, particularly, the deep hole is more difficult to drill because the material is a cast iron part, and the cutting chips are fine particles when the hole is drilled due to the structural organization of the material, and the quality defect of potential sand holes in the part increases the deep hole machining difficulty.
Chinese utility model patent with application number CN201820351521.5 discloses a deep hole drill, which adopts the whole length of cutting part, near the radial far end of chip groove, is provided with a pair of supporting edges on the periphery of deep hole drill, supporting edge protrusion deep hole drill surface, the circumference that its outer tip rotation formed is the same as the circumference that the outer tip rotation of cutting edge formed. The support edges are arranged approximately 180 DEG opposite each other on the circumference of the deep-hole drill. The angle formed between one of the adjacent support edges 5 and the centre of the circumference is arbitrarily as large as the angle formed between the adjacent support edges in the direction of the entire length of the cutting portion. When the deep hole drill bit is used for rotary cutting, two supporting edges and two cutting edges on one circumference are jointly supported on the hole wall, although the radial stress of the cutting part of the deep hole drill bit is balanced, the deviation condition between the axis of the deep hole drill bit and the axis of a deep hole can be greatly reduced, so that the cutting position degree can be ensured, and the deep hole processing quality can be improved. But the problem of heat dissipation of the drill bit during deep hole drilling cannot be solved, and the drill bit cannot be guaranteed not to be broken in a workpiece.
Disclosure of Invention
The utility model discloses an overcome the weak point among the above-mentioned technical problem, provide a novel deep hole drill bit.
In order to overcome the technical problem, the utility model discloses a technical scheme is:
including drill handle and drilling rod, by fillet transition between drill handle and the drilling rod, set up the spiral chip groove of an equidistance on the external diameter of drilling rod and set up the drilling sword at the collinear of chip groove and drilling rod external diameter, and drilling sword circumference diameter is greater than the external diameter of drilling rod, tip at the drilling rod is provided with the rake face of two symmetries, the back knife face adjacent with the rake face respectively, main cutting edge is adjacent respectively with the back knife face and main cutting edge links to each other with the chisel edge respectively, set up the spiral hole that is used for the fluid medium circulation of two sets of equidistances in the inside of drill handle and drilling rod, spiral hole one end link up in the tip of drill handle, the other end of spiral hole link up in the rake face of drilling rod.
Further, the fluid medium is any one of an emulsion or compressed air.
Compared with the prior art, the beneficial effects of the utility model are that: effectively improve the radiating effect of drill bit in the deep hole drilling in-process and be convenient for the discharge of smear metal, improve machining efficiency, and then reduce the risk of drill bit rupture, make the cutting performance of drill bit obtain further promotion.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a front view of the present invention.
Fig. 2 is a left side view of the present invention.
Detailed Description
As can be seen from fig. 1-2, comprises a drill shank 1 and a drill rod 11, wherein: in order to avoid stress concentration at the joint of the drill handle 1 and the drill rod 11, a round corner 10 is used for transition between the drill handle 1 and the drill rod 11, so that the rigidity and the strength of the drill bit are ensured; the drill rod comprises a drill rod 11, wherein an equidistant spiral chip removal groove 2 is formed in the outer diameter 4 of the drill rod 11, a drilling edge 3 is arranged on the common edge line of the chip removal groove 2 and the outer diameter 4 of the drill rod 11, the circumferential diameter of the drilling edge 3 is larger than the outer diameter 4 of the drill rod 11, two symmetrical front cutter faces 5 and rear cutter faces 6 adjacent to the front cutter faces 5 are arranged at the end portion of the drill rod 11, a cross edge 7 is arranged at the collinear position of the front cutter faces 5, the main cutter faces 6 are adjacent to the rear cutter faces 9 respectively, the main cutter faces 6 are connected with the cross edge 7 respectively, two groups of equidistant spiral holes 8 for flowing of fluid media are arranged in the drill handle 1 and the drill rod 11, one end of each spiral hole 8 is communicated with the end portion of the drill handle 1, and the other end of each.
Further, the fluid medium is any one of an emulsion or compressed air.
Example 1
When the drilled workpiece is made of cast iron, compressed air enters the front cutter face 5 and the rear cutter face 9 of the drill rod 11 from the end part of the drill handle 1 through the spiral hole 8, the drill bit is uniformly cooled along the spiral holes 8 at equal intervals in the drill handle 1 and the drill rod 11 in the process, and after the compressed air reaches the machined surface, under the action of air pressure, the fine cutting of the cast iron workpiece is discharged out of the workpiece along the chip groove 2, so that the workpiece is smoothly discharged, the drill bit is always kept in a cooling state, the strength and the rigidity of the drill bit are always kept, the impact force caused by the sand hole defect of the cast iron workpiece can be offset, the efficiency is improved, and the breakage risk of the drill bit is reduced.
Example 2
When the processed part is made of carbon steel, the cutting chips are continuous, the emulsion is adopted to enter the front cutter face 5 and the rear cutter face 9 of the drill rod 11 from the end part of the drill handle 1 through the spiral hole 8, the drill bit is uniformly cooled along the spiral holes 8 at equal intervals in the drill handle 1 and the drill rod 11 in the process, the smoothness of the drill hole can be improved, and the continuous feeding amount can be realized during processing due to the fact that the emulsion is sufficiently cooled in the deep hole, the cutting chips are smoothly discharged.
The present invention is not limited to the precise arrangements described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.
Claims (2)
1. The utility model provides a novel deep hole drill bit, includes drill shank and drilling rod, its characterized in that: transition by the fillet between drill stem and the drilling rod, set up the spiral chip groove of an equidistance on the external diameter of drilling rod and set up the drilling sword at the collinear of chip groove and drilling rod external diameter, and drilling sword circumference diameter is greater than the external diameter of drilling rod, be provided with the rake face of two symmetries at the tip of drilling rod, the back knife face adjacent with the rake face respectively, main cutting edge is adjacent with the back knife face respectively and main cutting edge links to each other with the chisel edge respectively, set up two sets of equidistant spiral holes that are used for the fluid medium circulation in the inside of drill stem and drilling rod, spiral hole one end link up in the tip of drill stem, the other end of spiral hole link up in the rake face of drilling rod, the back knife face.
2. The novel deep hole drill according to claim 1, characterized in that: the fluid medium is either an emulsion or compressed air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022398861.3U CN213591841U (en) | 2020-10-26 | 2020-10-26 | Novel deep hole drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022398861.3U CN213591841U (en) | 2020-10-26 | 2020-10-26 | Novel deep hole drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213591841U true CN213591841U (en) | 2021-07-02 |
Family
ID=76592372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022398861.3U Active CN213591841U (en) | 2020-10-26 | 2020-10-26 | Novel deep hole drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213591841U (en) |
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2020
- 2020-10-26 CN CN202022398861.3U patent/CN213591841U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220121 Address after: 130000 No. 1777, Helong street, Helong Town, Nong'an County, Changchun City, Jilin Province Patentee after: Shangming Hengfeng (Jilin) precision tools Co.,Ltd. Address before: 130000 Tiebei Zhonghuan Road, Changchun City, Jilin Province Patentee before: Jilin Hengfeng CNC Tools Co.,Ltd. |