CN216176985U

CN216176985U - Dedicated two-edge high-low tooth cutter of screen in cell-phone

Info

Publication number: CN216176985U
Application number: CN202122711126.8U
Authority: CN
Inventors: 姚武荣
Original assignee: Dongguan Ymt Cutting Tools Co ltd
Current assignee: Dongguan Ymt Cutting Tools Co ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-04-05
Anticipated expiration: 2031-11-08

Abstract

The utility model discloses a two-edge high-low tooth cutter special for a mobile phone inner screen, which comprises a cutter bar, wherein one end of the cutter bar is provided with a cutter head, the outer side wall of the cutter head is provided with at least two peripheral edges, the at least two peripheral edges spirally extend to a cutting end of the cutter head from a connecting end of the cutter head, the cutting end of the cutter head is provided with an end edge connected with the peripheral edges, a chip discharge groove is formed between two adjacent peripheral edges, one side of the chip discharge groove is provided with a front cutter surface facing to the chip rotation direction, the other side of the chip discharge groove is provided with a rear cutter surface, the end edge comprises a long tooth edge for cutting chips and a short tooth edge for balancing weight, and an included angle between the long tooth edge and the short tooth edge is 180 degrees. During cutting, the single long tooth blade is in direct contact with the edge of the inner screen of the mobile phone, so that the surface smoothness of the inner screen of the mobile phone is effectively improved and the generation of a shade surface is reduced at a high rotating speed.

Description

Dedicated two-edge high-low tooth cutter of screen in cell-phone

Technical Field

The utility model relates to the technical field of cutters, in particular to a two-edge high-low tooth cutter special for an inner screen of a mobile phone.

Background

A milling cutter is a rotating tool with one or more cutter teeth for milling. When in work, each cutter tooth cuts off the allowance of the workpiece in sequence and intermittently. The milling cutter includes: the tool for machining flat surfaces, steps, grooves, profiled surfaces and cutting through rigid workpieces and the like on a milling machine is generally rotated at a higher speed than the tool for cutting through rigid workpieces. In the prior art, when the edge of a soft workpiece such as a mobile phone inner screen is cut, the following defects exist: (1) at high rotating speed, the surface of the inner screen of the mobile phone is easy to have a shade surface; (2) at high rotation speed, knife grain lines appear on the edge of the inner screen of the mobile phone.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a special two-edge high-low tooth cutter for an inner screen of a mobile phone, which can improve the smoothness in the surface of a soft workpiece and reduce the generation of a shade surface.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

the utility model provides a dedicated two sword hi-low teeth cutters of screen in cell-phone, includes the cutter arbor, the one end of cutter arbor is equipped with the tool bit, the lateral wall of tool bit is equipped with two at least all swords, two at least all swords are followed the link spiral of tool bit extends to the smear metal end of tool bit, the smear metal end of tool bit is equipped with the end sword of being connected with all swords, adjacent two the shaping has the chip groove between the all swords, chip groove one side is equipped with the rake face towards smear metal direction of rotation, and the opposite side is equipped with the back knife face, the end sword includes a long tooth sword that is used for the smear metal, a short tooth sword that is used for the counter weight, contained angle between long tooth sword and the short tooth sword is 180.

Preferably, the radial length of the long land is 0.05 to 0.2mm longer than the radial length of the short land.

Preferably, the peripheral edge has a rake angle on one side thereof in the direction of rotation of the chips and a relief angle on the other side thereof.

Preferably, the rake angle is 20 to 25 °.

Preferably, the surface of the rear angle is polished by a grinding wheel to form a first mirror surface.

Preferably, the surface of the rake face is polished by a grinding wheel to form a second mirror surface.

Preferably, the grinding wheel is an ultrafine particle grinding wheel.

Preferably, the long tooth blade and the short tooth blade are formed integrally with the single peripheral blade.

Preferably, the front angle and the rear angle are integrally formed.

The utility model has the beneficial effects that: during the smear metal, through the edge direct contact of single long tooth sword and cell-phone inner screen, under high rotational speed, the smooth finish on effectual improvement cell-phone inner screen surface reduces the production of negative and positive face, and high-speed pivoted in-process forms dynamic balance between short tooth sword and the long tooth sword, is favorable to reducing the vibration of tool bit, reduces the centrifugal force of single long tooth sword, reduces the knife line because of shaking the sword and produce, improves the quality of smear metal production.

The utility model also comprises the following advantages: (1) the sharpness of the cutting edge of the peripheral edge is increased through a large front angle of 20-25 degrees, and the cutting efficiency and the flatness of the surface of a screen in a mobile phone are effectively improved; (2) through the first mirror surface, the micro-defect of the cutting edge of the peripheral edge is effectively reduced, the adhesion of debris generated during processing on the cutting edge of the peripheral edge is reduced, and the scraping of the debris on the surface of the inner screen of the mobile phone is prevented; (3) among the prior art, the surface covering of cell-phone inner screen has the double faced adhesive tape who is used for pasting the protection film, and the cutter is when rotating, and the easy adhesion of double faced adhesive tape is on the surface of chip groove, and the surface of cell-phone inner screen is torn and is drawn, leads to the product to scrap, through the second mirror surface, reduces the roughness on chip groove surface, and then prevents that double faced adhesive tape from attaching on the surface of chip groove, improves the quality of production.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a side view of a dual-blade high-low tooth cutter dedicated for mobile phone inner screens in the present invention;

FIG. 2 is a top view of a dual-blade high-low tooth cutter dedicated for mobile phone inner screens in the present invention;

fig. 3 is a transverse cross-sectional view of a two-edge high-low tooth cutter specially used for the inner screen of the mobile phone.

Shown in the figure: 1-a cutter bar;

2-cutting head, 21-peripheral edge, 211-rake angle, 212-relief angle, 22-end edge, 221-long tooth edge, 222-short tooth edge, 23-chip groove, 231-rake face.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, in the present invention, a two-edge high-low tooth cutter special for a mobile phone inner screen includes a cutter bar 1, one end of the cutter bar 1 is provided with a cutter head 2, an outer side wall of the cutter head 2 is provided with at least two peripheral edges 21, the at least two peripheral edges 21 spirally extend from a connecting end of the cutter head 2 to a cutting end of the cutter head 2, the cutting end of the cutter head 2 is provided with an end edge 22 connected with the peripheral edges 21, a chip discharge groove 23 is formed between two adjacent peripheral edges 21, one side of the chip discharge groove 23 is provided with a front cutter surface 231 facing a chip rotation direction, the other side of the chip discharge groove is provided with a rear cutter surface, the end edge 22 includes a long tooth edge 221 for cutting, and a short tooth edge 222 for balancing weight, and an included angle between the long tooth edge 221 and the short tooth edge 222 is 180 °. In the embodiment, a dedicated two-edge high-low tooth cutter for mobile phone inner screens comprises a cutter bar 1, one end of the cutter bar 1 is provided with a cutter head 2, the outer side wall of the cutter head 2 is provided with two peripheral edges 21, the two peripheral edges 21 extend from the connecting end of the cutter head 2 to the cutting end of the cutter head 2 in a spiral manner, the cutting end of the cutter head 2 is provided with an end edge 22 connected with the peripheral edges 21, two adjacent peripheral edges 21 are formed with a chip discharge groove 23, one side of the chip discharge groove 23 is provided with a front cutter face 231 facing the chip rotation direction, the other side of the chip discharge groove is provided with a rear cutter face, the end edge 22 comprises a long tooth edge 221 for cutting chips and a short tooth edge 222 for balancing weight, and the included angle between the long tooth edge 221 and the short tooth edge 222 is 180 degrees

In the present invention, the radial length of the long land 221 is 0.05 to 0.2mm longer than the radial length of the short land 222; during cutting, the edge of the single long tooth edge 221 is in direct contact with the edge of the inner screen of the mobile phone, the short tooth edge 222 only plays a role in dynamic balance, and on the premise that the work of the single long tooth edge 221 is not influenced, the size of the short tooth edge 222 can further improve the dynamic balance effect, further reduce the centrifugal force of the cutter, and further inhibit the cutter vibration. In this embodiment, the radial length of the long land 221 is 0.1mm longer than the radial length of the short land 222.

Preferably, the peripheral edge 21 has a rake angle 211 facing the chip rotation direction on one side and a relief angle 212 on the other side.

In the present invention, the rake angle 211 is 20 to 25 °. In this embodiment, the rake angle 211 is 22 °; through 22 big anterior angles 211, increase the sharpness of the 21 blade of week sword, effectively improve the roughness of cutting efficiency and cell-phone inner screen surface.

Preferably, the surface of the rear angle 212 is polished by a grinding wheel to form a first mirror surface; through first mirror surface, effectively reduce the lack a little of week sword 21 blade, reduce the piece adhesion that produces man-hour on the blade of week sword 21, and then play and prevent that the piece from scraping the surface of cell-phone built-in screen.

Preferably, the surface of the rake face 231 is polished by a grinding wheel to form a second mirror surface; in the prior art, the surface of the inner screen of the mobile phone is covered with the double-sided adhesive for adhering the protective film, when the cutter rotates, the double-sided adhesive is easily adhered to the surface of the chip groove 23, the surface of the inner screen of the mobile phone is torn, so that the product is scrapped, the roughness of the surface of the chip groove 23 is reduced through the second mirror surface, the double-sided adhesive is prevented from being adhered to the surface of the chip groove 23, and the production quality is improved.

Preferably, the grinding wheel is an ultrafine particle grinding wheel; further reducing the surface roughness of the first mirror surface or the second mirror surface.

Preferably, the long tooth edge 221 and the short tooth edge 222 are formed integrally with the single peripheral edge 21, respectively.

Preferably, the front angle 211 and the rear angle 212 are integrally formed.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a dedicated two sword hi-low tooth cutters of screen in cell-phone, includes the cutter arbor, the one end of cutter arbor is equipped with the tool bit, the lateral wall of tool bit is equipped with two at least all swords, two at least all swords are followed the link spiral of tool bit extends to the smear metal end of tool bit, the smear metal end of tool bit is equipped with the end sword of being connected with all swords, adjacent two the shaping has the chip groove between the all swords, chip groove one side is equipped with the rake face towards smear metal direction of rotation, and the opposite side is equipped with the back knife face, a serial communication port, the end sword includes a long tooth sword that is used for the smear metal, a short tooth sword that is used for the counter weight, contained angle between long tooth sword and the short tooth sword is 180.

2. The special two-edge high-low tooth cutter for the inner screen of the mobile phone as claimed in claim 1, wherein the radial length of the long tooth edge is 0.05-0.2mm longer than that of the short tooth edge.

3. The special two-edge high-low tooth cutter for the inner screen of the mobile phone as claimed in claim 1, wherein one side of the peripheral edge is provided with a front angle facing to the rotation direction of the chips, and the other side is provided with a back angle.

4. The special two-edge high-low tooth cutter for the inner screen of the mobile phone as claimed in claim 3, wherein the angle of the front angle is 20-25 °.

5. The special two-edge high-low tooth cutter for the inner screen of the mobile phone as claimed in claim 3, wherein the surface of the back angle is polished by a grinding wheel to form a first mirror surface.

6. The special two-edge high-low tooth cutter for the inner screen of the mobile phone according to claim 1, wherein the surface of the front cutter face is polished by a grinding wheel to form a second mirror face.

7. The special two-edge high-low tooth cutter for the inner screens of mobile phones according to claim 5 or 6, wherein the grinding wheel is an ultrafine particle grinding wheel.

8. The special two-edge high-low tooth cutter for the inner screen of the mobile phone as claimed in claim 1, wherein the long tooth edge and the short tooth edge are respectively formed integrally with the single peripheral edge.

9. The special two-edge high-low tooth cutter for the inner screens of mobile phones according to claim 3, wherein the front angle and the rear angle are integrally formed.