阅读说明：本技术 一种鹰嘴型纳米金刚石镀膜硬质合金钻头 (Olecranon type nano diamond coating hard alloy drill bit ) 是由 王梦怡 王季顺 孙静 万年奇 龚永生 王智胜 陈宜陵 沈家和 于 2019-10-17 设计创作，主要内容包括：本发明提供一种鹰嘴型纳米金刚石镀膜硬质合金钻头。所述鹰嘴型纳米金刚石镀膜硬质合金钻头包括刀柄和刀头,所述刀头的外表面开设有螺旋槽,所述刀头远离刀柄的一端设置有钻尖角,所述钻头在第一后刀面上顶尖处180度对称开了两个鹰嘴型缺口,所述钻头在钻头中心有修薄横刃设计。所述刀柄远离刀头的一端开设有倒角,所述钻头刀头外表面有纳米金刚石镀膜,本发明提供的鹰嘴型纳米金刚石镀膜硬质合金钻头主要解决5G及以上网络通信应用中PCB超硬板材的孔加工难题。(The invention provides an olecranon type nano-diamond coated hard alloy drill bit. The olecranon type nano-diamond coated hard alloy drill bit comprises a tool handle and a tool bit, wherein a spiral groove is formed in the outer surface of the tool bit, a drilling point angle is formed in one end, far away from the tool handle, of the tool bit, two olecranon type notches are symmetrically formed in the 180-degree vertex position of the drill bit on a first rear tool face, and the drill bit is provided with a thinning cross blade in the center of the drill bit. The invention provides an olecranon type nano-diamond coated hard alloy drill bit which mainly solves the hole machining problem of PCB superhard plates in 5G and above network communication applications.)

1. The utility model provides an olecranon type nanometer diamond coating film carbide drill bit, includes handle of a knife (1) and tool bit (2), its characterized in that: the outer surface of tool bit (2) has been seted up helicla flute (3), the one end that handle of a knife (1) was kept away from in tool bit (2) is provided with point angle (4), point angle (4) are located and have 180 degrees symmetries to open two olecranon type breachs (5) on the first back knife face, there is design of slimming chisel edge (6) at the center of point angle (4), chamfer (7) have been seted up to the one end that handle of a knife (1) kept away from tool bit (2).

2. The olecranon-type nanodiamond drill according to claim 1, characterized in that the outer surface of the tool bit (2) is provided with a nanodiamond coating.

3. The olecranon-type nanodiamond drill bit according to claim 1, characterized in that the number of the spiral grooves (3) is two, the two spiral grooves (3) are spirally arranged, and the spiral angle is 15 to 45 degrees.

4. The nano-diamond drill bit of the olecranon type according to claim 1, characterized in that two of the olecranon type indentations (5) are of the full arc type.

5. The olecranon-type nanodiamond drill according to claim 1, characterized in that the nanodiamond coating on the outer surface of the shank (1) is a new nanostructured multi-element composite coated tool.

6. The olecranon-type nanodiamond drill bit according to claim 1, characterized in that the shaft end diameter of the shank (1) is smaller than the shaft end diameter of the bit (2).

Technical Field

The invention relates to the field of drill bit processing, in particular to an olecranon type nano-diamond coated hard alloy drill bit.

Background

The hole limit of conventional drill bit is 1000 to 3000, under the not high condition of pore wall quality requirement to drilling, can return to the drill bit and grind the cubic, but, can only use once to this kind of the drill bit under the higher condition to drilling pore wall quality requirement of 5G network communication, because can form a down-the-way awl in drill bit two top departments after the drill bit wearing and tearing, can not get rid of down-the-way awl part completely through returning to grinding yet, the hole that the drill bit that goes out through returning to grinding can be less than actual hole to the hole mouth mantling, burr scheduling problem still appears easily.

When a conventional drill bit is used for processing a superhard high-multilayer composite board, the conventional drill bit has the defects of quick tool face abrasion, drill immobility, hole wall scorching, short service life of a tool, difficult quality guarantee of hole walls and the like, and the problem is solved by urgently needing a tool aiming at the current situation.

Disclosure of Invention

The invention provides an olecranon type nano-diamond coated hard alloy drill bit, which mainly solves the hole processing problem of a PCB (printed circuit board) superhard plate in 5G and network communication applications. In order to solve the technical problem, the olecranon type nano-diamond drill bit provided by the invention comprises a cutter handle and a cutter head, wherein a spiral groove is formed in the outer surface of the cutter head, a drill point angle is arranged at one end, far away from the cutter handle, of the cutter head, two olecranon type notches are symmetrically formed in the 180-degree vertex position of a first rear cutter face of the drill bit, and a thinning cross blade is arranged in the center of the drill bit. And one end of the cutter handle, which is far away from the cutter head, is provided with a chamfer, preferably, the outer surface of the cutter head of the drill bit is provided with a nano diamond coating.

Preferably, the number of the spiral grooves is two, the two spiral grooves are spirally arranged, and the spiral angle is 15-45 degrees.

Preferably, the two olecranon-shaped notches are full-arc-shaped, the design is good in chip breaking effect, smooth in chip removal and good in heat dissipation condition, and the durability of the cutter is high.

Preferably, the olecranon type nanometer diamond drill bit adopts a new method of a nanometer structure multi-element composite coating cutter for the nanometer diamond coating on the outer surface.

Preferably, the diameter of the shaft end of the tool shank is smaller than that of the shaft end of the tool bit.

Compared with the related technology, the olecranon type nanometer diamond drill provided by the invention has the following beneficial effects:

the invention provides an olecranon type nano-diamond coated hard alloy drill bit.

1. The special design of the tool bit ensures that the tool bit still has a sharp front angle after the diamond coating, and the diamond coating tool has better shape retention, so the tool has long service life.

2. Compared with the conventional cutter, the drill bit is not moved when the superhard high-multilayer composite board is processed, the processed hole is easy to have flanging, the smoothness of the hole is affected, and the like, and the quality of the hole is improved.

3. The outer surface of the tool bit is provided with a layer of nano diamond coating, so that the service life of the tool can be prolonged by more than 10 times.

4. Two olecranon type breach are the full circular arc type, and this kind of design chip breaking is effectual, and the chip removal is smooth and easy, and the good cutter durability of heat dissipation condition is high, and full circular arc type breach anterior angle is 20 degrees to 30 degrees, can increase cutting edge strength and avoid because of the too dark stifled bits phenomenon that causes of cell type, and the bits that the drilling produced are cut off in olecranon type breach department, get rid of from the chip groove and the helicla flute department of olecranon department again, avoid the drill bit to twine the silk and the not good problem of pore wall quality that the chip removal leads to smoothly.

5. The drill bit has a thinning chisel edge design in the center of the drill bit, the width of the chisel edge is 0.05mm to 0.15mm after being polished, the axial force at the drill center is small, the centering effect is good, and the precision of processing holes is high.

Drawings

FIG. 1 is a schematic structural diagram of a preferred embodiment of an olecranon-type nanodiamond drill bit according to the present invention;

FIG. 2 is a side view of the structure of the tool tip of FIG. 1;

fig. 3(a) is a picture before the pretreatment of the coating layer, and (b) is a picture after the pretreatment of the coating layer.

Reference numbers in the figures: 1. the drill bit comprises a shank, 2 parts of a tool bit, 3 parts of a spiral groove, 4 parts of a drill tip, 5 parts of an olecranon-shaped arc notch, 6 parts of a thinning chisel edge, 7 parts of a chamfer.

Detailed Description

The invention is further described with reference to the following figures and embodiments.

Please refer to fig. 1, fig. 2 and fig. 3 in combination, wherein fig. 1 is a schematic structural diagram of the present invention; FIG. 2 is a side view of a feature of a tool tip; fig. 3(a) is a picture before the pretreatment of the coating layer, and (b) is a picture after the pretreatment of the coating layer.

First embodiment

The olecranon type nano-diamond coated hard alloy drill bit comprises a cutter handle and a cutter head, wherein a spiral groove is formed in the outer surface of the cutter head, a drill point angle is formed in one end, far away from the cutter handle, of the cutter head, two olecranon type notches are symmetrically formed in the 180-degree vertex of the drill bit on a first rear cutter face, the drill bit is designed to be thinned at the center of the drill bit, a chamfer is formed in one end, far away from the cutter head, of the cutter handle, and a nano-diamond coated film is formed on.

The number of the spiral grooves of the drill bit head is two, and the spiral grooves are spirally arranged.

The two olecranon-shaped notches are full-arc-shaped, and the design has the advantages of good chip breaking effect, smooth chip removal and good heat dissipation condition, and the cutter has high durability.

The front angle of the full-arc eagle mouth notch of the drill is 20-30 degrees, so that the cutting edge strength can be increased, and the phenomenon of chip blockage caused by too deep groove type can be avoided.

Second embodiment

According to the olecranon-shaped nano-diamond coated hard alloy drill bit, the nano-diamond coating on the outer surface adopts a novel method for preparing a nano-structure multi-element composite coating cutter, namely, a composite structure coating consisting of quaternary multi-phase nano-crystals and amorphous is prepared, the novel coating processing method utilizes the solid solution strengthening of elements such as C, Al, Cr and Zr and the amplitude modulation decomposition of TiN and Si3N4 to form a nano-composite structure, the internal energy accumulation of a two-phase interface is high, and the crystal phase and the amorphous phase are separated from each other thermodynamically; the novel coating method can play roles of improving the oxidation resistance and the diffusion wear resistance of the coating, improving the brittleness of a conventional coating, improving the toughness of the coating, prolonging the service life of a cutter coating and the like, and can play roles of improving the high hardness (>40GPa) and the excellent wear resistance of a product, and better corrosion resistance than a common coating, thereby obtaining better use effect when being used under working conditions of high-speed cutting, dry processing and the like.

The olecranon type nano-diamond coated hard alloy drill bit comprehensively utilizes the technical advantages of high ionization rate of hollow ion plating and wide range of medium-frequency magnetron sputtering coating materials and easily controlled components, and can obtain a nano-structure multi-element composite coating with higher deposition speed and high surface quality.

Compared with the related technology, the olecranon type nanometer diamond drill provided by the invention has the following beneficial effects:

1. the special design of the tool bit of the processed material ensures that the tool bit 2 still has a sharp front angle after diamond coating, and the diamond coating tool has better shape retention, so the tool has long service life.

2. Compared with the conventional cutter, the drilling tool has the advantages that drilling is not moved when the high-multilayer composite board is processed, the processed hole is easy to have flanging, the smoothness of the hole is affected, and the like, and the quality of the hole is improved.

3. The outer surface of the tool bit is provided with a layer of nano diamond coating, so that the service life of the tool can be prolonged by more than 10 times.

4. Two olecranon type breach are the full circular arc type, and this kind of design chip breaking is effectual, and the chip removal is smooth and easy, and the good cutter durability of heat dissipation condition is high, and full circular arc type breach anterior angle is 20 degrees to 30 degrees, can increase cutting edge strength and avoid because of the too dark stifled bits phenomenon that causes of cell type, and the bits that the drilling produced are cut off in olecranon type breach department, get rid of from the chip groove and the helicla flute department of olecranon department again, avoid the drill bit to twine the silk and the not good problem of pore wall quality that the chip removal leads to smoothly.

5. The drill bit has a thinning chisel edge design in the center of the drill bit, the width of the chisel edge is 0.05mm to 0.15mm after being polished, the axial force at the drill center is small, the centering effect is good, and the precision of processing holes is high.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.