CN110946391A

CN110946391A - SC sharp wear-resisting tungsten steel nail grinding head

Info

Publication number: CN110946391A
Application number: CN201911092523.2A
Authority: CN
Inventors: 王梦怡; 王季顺; 孙静; 万年奇; 刘怀兵; 刘磊; 陈若; 孙波; 杨彩云
Original assignee: Shanghai Well Sun Precision Tools Co ltd
Current assignee: Shanghai Well Sun Precision Tools Co ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-04-03

Abstract

The invention relates to a grinding head, in particular to a nail beautifying grinding head. The SC sharp wear-resistant tungsten steel nail grinding head comprises an edge part and a rod part, wherein the edge part comprises an effective edge part, right spiral grooves are uniformly distributed on the circumference of the effective edge part, a group of teeth are uniformly distributed on the right spiral, the tooth form is designed to be SC tooth form, the middle of two adjacent teeth is flat, the front angle of the SC tooth ranges from +5 degrees to-5 degrees, the SC tooth has two back angles, the first back angle ranges from 5 degrees to 20 degrees, and the second back angle ranges from 70 degrees. The tool bit has the advantages of high material hardness, good toughness of the tool handle material, high welding strength of the blade part and the rod part, high working efficiency, sharp forward rotation and reverse rotation during use, can be used for polishing and has long service life.

Description

SC sharp wear-resisting tungsten steel nail grinding head

Technical Field

The invention relates to a grinding head, in particular to a nail beautifying grinding head.

Background

The nail-beautifying grinding heads commonly used in the market at present comprise a tungsten steel nail-beautifying grinding head, a ceramic nail-beautifying grinding head and a carborundum nail-beautifying grinding head. The tungsten steel nail grinding head is sharp and wear-resistant; the ceramic nail grinding head is beautiful; the carborundum nail grinding head is cheap but not sharp enough, and the heat dissipation is not good. So the most used is the tungsten steel nail grinding head. The tungsten steel nail-beautifying grinding head is divided into a stainless steel handle nail-beautifying grinding head and a tungsten steel handle nail-beautifying grinding head. The integral tungsten steel nail grinding head has the advantages of good stability in use, long service life, small vibration and the like. But the integral tungsten steel nail grinding head also has certain defects, and firstly, the integral tungsten steel nail grinding head has complex processing technology and high cost. Secondly, from the viewpoint of the material of the cutter, the material of the cutter head is expected to have high hardness, and the material of the cutter handle has good toughness. The greater the hardness of the material, the better the wear resistance and the poorer the fracture toughness. Therefore, it is very difficult to ensure the high hardness and good wear resistance of the cutting edge and the toughness of the handle. This is one of the difficulties faced by the nail polish head market.

In addition, the conventional nail grinding head has the defect that the sharpness of the cutter is inversely proportional to the service life and the stability of the cutter during design. The single tooth form of the conventional nail grinding head is designed into triangular teeth, the front angle is about minus 10 degrees, and the rear angle is 70 degrees, so that when the tool is used for machining hard crystal nails, the tool is not sharp enough, the machining time is long, and the efficiency is low; meanwhile, the excessive clearance angle weakens the strength of the cutting edge of the cutter, and has poor stability and short service life. This is the second problem faced by nail grinding head market.

Disclosure of Invention

The invention provides an SC sharp wear-resistant tungsten steel nail grinding head which mainly solves the problems of the existing nail grinding head. The cutter head is made of high-hardness materials, the cutter handle is made of good-toughness materials, the working efficiency is high, and the service life is long.

The utility model provides a first bistrique of SC sharp wear-resisting tungsten steel, contains cutting part and pole portion, contains effective cutting part and the linkage segment that links to each other with pole portion on the cutting part, has the connecting piece of being connected with linkage segment on the cutting part in pole portion, and wherein linkage segment and connecting piece are through high frequency welded connection together.

The SC sharp wear-resistant tungsten steel nail grinding head is characterized in that right spiral grooves are uniformly distributed on the circumference of the effective edge part, a group of teeth are uniformly distributed on the right spiral, the tooth form is designed to be SC tooth form, the middle of two adjacent teeth is flat, the front angle of the SC tooth ranges from +5 degrees to-5 degrees, the SC tooth has two rear angles, the first rear angle ranges from 5 degrees to 20 degrees, and the second rear angle ranges from 70 degrees

The circumference of the blade part of the SC sharp wear-resistant tungsten steel nail grinding head is provided with a left spiral groove which is crossed with the right spiral groove and is uniformly distributed; the left spiral groove is flat; the left spiral groove and the right spiral groove are crossed to form the tooth width.

The SC sharp wear-resistant tungsten steel nail grinding head is characterized in that the ratio of the number of teeth of a right spiral to the number of teeth of a left spiral groove is 4: 3, overlapping the adjacent two teeth by 40 to 70 percent.

The SC sharp wear-resistant tungsten steel nail beautifying grinding head is designed to be right-handed cut or left-handed cut.

One of the connecting section and the connecting piece is provided with an internal threaded hole, the other one is provided with a stud matched with the internal threaded hole, and the internal threaded hole is provided with an arc-shaped exhaust groove communicated with the outside of the body.

Compared with the related art, the invention has the following beneficial effects:

the chip removal effect is good. The ground scraps are discharged along the spiral groove, the scraps have small friction with the front tool surface of the cutter, the generated heat is less, and the fingernails do not feel hot;

good stability, long service life and small vibration. The cutting part is made of tungsten steel with high hardness, the handle part is made of tungsten steel with low hardness and good toughness, the handle part is inserted into the cutting part in a connecting mode, and the tungsten steel and the handle part are connected together in a high-frequency welding mode, so that the using effect same as that of an integral tungsten steel grinding head is achieved; the invention adopts a special connection mode of the blade part and the handle part, the handle part is inserted into the blade part, the blade part is provided with steps, the welding contact area is large, the welding is firmer, and the handle part is not easy to break; the added steps also facilitate the coloring of the circles. The color circle is used to identify different tooth densities.

Furthermore, the tooth profile of the single tooth of the present invention is designed as an SC tooth profile: the SC teeth have two back angles, the first back angle is 5-20 degrees, and the second back angle is 70 degrees. The first clearance angle is small, and the strength of the cutter is increased. The second clearance angle is large, so that the friction force between the clearance surface and the processed object is reduced when the cutter is used. The size of the front angle and the size of the rear angle are combined, so that the cutter is the best in stability and the longest in service life on the premise of ensuring the sharpness and the wear resistance of the cutter. In addition, the invention is designed to rotate forward and reversely for polishing.

The noun explains:

SC: abbreviation for Super Cut

SC tooth: the super cutter defines a tooth profile including a rake angle and two relief angles.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a right side view of FIG. 1

Fig. 3 is a tooth profile of the SC tooth.

Detailed Description

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

As shown in fig. 1 to 3, an SC sharp wear-resistant tungsten steel nail polish grinding head comprises a blade 1 and a rod 2. Wherein the blade part 1 comprises an effective blade part 3 and a part 4 connected with the rod part 2, and the rod part 2 is provided with a part 5 connected with the connecting part 4 on the blade part 3, wherein the 4 and the 5 are connected together by high-frequency welding. The circumference of the effective blade part 3 is evenly distributed with a right spiral groove, a group of teeth are evenly distributed on the right spiral, the tooth form is designed to be SC tooth form, and the middle of two adjacent teeth is flat.

Referring to fig. 3, it can be seen that the front angle 9 of the SC teeth is +5 ° to-5 °, the SC teeth have two rear angles, the first rear angle 7 is 5 ° to 20 °, and the second rear angle 8 is 70 °. The first clearance angle is small, and the strength of the cutter is increased. The second clearance angle is large, so that the friction force between the clearance surface and the processed object is reduced when the cutter is used. The combination of the rake and relief dimensions maximizes tool life.

The circumference of the blade part 3 is provided with a left spiral groove which is crossed with the right spiral groove and is uniformly distributed. The left spiral groove is designed to be flat. Is beneficial to chip removal and heat dissipation. The left helical flute and the right helical flute intersect to form a tooth width (effective cutting edge).

The ratio of the number of the right spiral groove teeth to the number of the left spiral teeth in the invention is 4: 3, preferably, the number of the right spiral teeth is 16, the number of the left spiral grooves is 12, and the adjacent two teeth are overlapped by 60 to 70 percent

The invention can be designed as right-handed cutting or left-handed cutting. The right-handed cutting is suitable for people who like right-handed polishing; the left-handed cutter is suitable for people who like left-handed grinding.

The blade part and the rod part of the invention are both made of tungsten steel material. Wherein, the blade part is made of tungsten steel material with higher hardness, and the handle part is made of tungsten steel material with low hardness and good toughness.

The blade part 1 and the rod part 2 of the product are connected together by a high-frequency welding method. The connection mode is that the inner hole part 4 of the blade part is connected with the shaft 5 of the handle part, and two arc exhaust grooves 6 are arranged on the hole wall of the inner hole 4. In the process of welding the inner hole part 4 and the shaft 5, gas is exhausted through the exhaust groove 6, so that the solder is fully melted, the gas is completely exhausted, complete welding is realized, and the welding strength is improved.

Those skilled in the art will appreciate that the present invention may be variously shaped, rather than singular, such as may be configured as a straight barrel head, a straight barrel bulb, a straight barrel flat head, a cone, a torch, a sphere, and the like.

Claims

1. The SC sharp wear-resistant tungsten steel nail grinding head comprises an edge part and a rod part, wherein the edge part comprises an effective edge part, right spiral grooves are uniformly distributed on the circumference of the effective edge part, a group of teeth are uniformly distributed on the right spiral, the tooth form is designed to be SC tooth form, the middle of two adjacent teeth is flat, the front angle of the SC tooth ranges from +5 degrees to-5 degrees, the SC tooth has two back angles, the first back angle ranges from 5 degrees to 20 degrees, and the second back angle ranges from 70 degrees.

2. The SC sharp wear-resistant tungsten steel nail grinding head according to claim 1, wherein the edge portion has a left spiral groove uniformly distributed on the circumference thereof and intersecting with the right spiral groove; the left spiral groove is flat; the left spiral groove and the right spiral groove are crossed to form the tooth width.

3. The SC sharp wear-resistant tungsten steel manicure abrasive tip as claimed in claim 2, wherein the ratio of the number of right helical teeth to the number of left helical grooves teeth is 4: 3, overlapping the adjacent two teeth by 40 to 70 percent.

4. The SC sharp wear tungsten steel nail polish abrasive tip according to claim 1, 2 or 3, wherein said abrasive tip is designed as a right-handed cut or a left-handed cut.

5. The SC sharp wear tungsten steel nail polish head according to claim 1, further comprising a connecting section connected to the shaft section, and a connecting member connected to the connecting section on the blade section on the shaft section, wherein the connecting section and the connecting member are connected together by high frequency welding.

6. The SC sharp abrasion-resistant tungsten steel fingernail grinding head of claim 5, wherein one of the connecting section and the connecting piece is provided with an internal threaded hole, and the other one of the connecting section and the connecting piece is provided with a stud matched with the internal threaded hole on the outer surface, and the internal threaded hole is provided with an arc-shaped exhaust groove leading to the outside of the body.