CN208391091U

CN208391091U - A kind of reconditioning with the chip dividing groove bits that die bore

Info

Publication number: CN208391091U
Application number: CN201820886833.6U
Authority: CN
Inventors: 朱小坤; 何建国
Original assignee: Jiangsu Tiangong Tools Co Ltd
Current assignee: Jiangsu Tiangong Precision Tools Co.,Ltd.
Priority date: 2018-06-08
Filing date: 2018-06-08
Publication date: 2019-01-18
Anticipated expiration: 2028-06-08

Abstract

A kind of reconditioning with the chip dividing groove bits that die bore, cutter hub including drillstock and twisted shape, the top of the cutter hub is apex point, the flank being centrosymmetric there are two being set on the apex point, the flank is equipped with a chip dividing groove, the flank is divided into the face A, groove face and the face B, a transition face is equipped between the groove face and the face A, the rear ditch rib in the face A and the rear ditch rib in the face B are processed together along the reconditioning of chisel edge direction simultaneously with the root of the tail rib at the top of the cutter hub and form a hook surface disconnected by the chip dividing groove before the cutter hub, the i.e. described hook surface includes the first reconditioning face and the second reconditioning face.Its structure is simple, and design rationally, is more advantageous to chip removal and cutting fluid flows into helicla flute, improve the puzzlement of chip removal chip breaking, it is greatly improved chip removal efficiency when cutting, chip removal is unsmooth when difficult cutting metal being avoided to cut, and causes deformation of products and material that high temperature bond and winding cutter phenomenon generation occurs.

Description

A kind of reconditioning with the chip dividing groove bits that die bore

Technical field

The utility model belongs to technical field of tools, particularly relates to a kind of fluted drill, especially a kind of band point bits The reconditioning of slot, which dies to consider to be worth doing, bores.

Background technique

With the continuous development of science and technology, new material continues to bring out, and new requirement is constantly proposed to drill bit.Especially exist When drilling difficult-to-machine material, since the main sword of traditional fluted drill is long, cutting is wide, and chip, which is curled into, gets spiral shell volume, shared space Volume is big, causes chip removal not smooth, and cutting fluid difficultly flows into, so that cutting heat at fluted drill apex point cutting edge be made sharply to rise Height, and cutting edge is in semi-closed state when drilling works, and is limited by drill flute space, chip cannot be smoothly discharged in time, It is easy to cause stifled bits, twine bits phenomenon, so that cutting edge hardness be caused quickly to reduce, cutting power is lost in abrasion aggravation, serious Drill bit can be caused to twist off, easy pile-up blocks in drawbore, and coolant liquid not can enter in drilling working face, and drill bit is caused to be cut The raising of sword temperature is cut, drill thrust increases, and aggravates bit wear, or even drill bit is caused to split off or burn to death, drilling life of bit is reduced, Borehole accuracy is low, bore surfaces are coarse, and finish is bad, influences drilling effect, and aggravate tool breakage and abrasion, seriously affects processing Efficiency and processing quality.

Therefore, the above problem is should to pay attention to during to fluted drill structure design and use and what is solved asks Topic.

Utility model content

In view of the above problems, the utility model provides one kind and overcomes defect in the prior art, provides a kind of knot Structure is reasonable, can effectively chip removal the reconditioning with chip dividing groove die bits bore.

The technical solution of the utility model is: a kind of reconditioning with the chip dividing groove bits that die bore, including drillstock and twisted shape Cutter hub, the top of the cutter hub is apex point, is set on the apex point there are two the flank being centrosymmetric, in the flank Equipped with a chip dividing groove, the flank is divided into the face A, groove face and the face B, a transition is equipped between the groove face and the face A Face, the rear ditch rib in the face A and the rear ditch rib in the face B are repaired along chisel edge direction simultaneously together with the root of the tail rib at the top of the cutter hub Mill processing forms a hook surface disconnected by the chip dividing groove before the cutter hub, i.e., the described hook surface includes the first reconditioning face With the second reconditioning face.

Further improvement of the utility model is: the groove face and the angle between horizontal plane are 10 ° ± 5 °.

Further improvement of the utility model is: the angle between the groove face and the transition face is acute angle.

Further improvement of the utility model is: the sharp angle of the apex point be 135 ° ± 5 °, relief grinding relief angle be 8 ° ± 12°。

Further improvement of the utility model is: the cutter hub surface is coated with titanium aluminum nitride coating.

Further improvement of the utility model is: the chisel edge length of the apex point is no more than 1mm.

The utility model provides a kind of reconditioning with the chip dividing groove bits that die and bores, and chip dividing groove is arranged in drill bit flank, can The dust in drilling process is smoothly discharged, coolant liquid flows smoothly.First reconditioning face and second is set before the cutter hub Reconditioning face increases the length of cutting edge, is thinned the thickness of cutting of outside, is more advantageous to chip removal and cutting fluid flows into spiral Slot, and clast is discharged rapidly, to reduce drilling resistance, reduce the thermic load in its unit sword length.In the knife body surface Face is coated with titanium aluminum nitride coating, improves the wearability and antioxygenic property of cutter hub, reduces coefficient of friction, prevents from bonding.

The beneficial effects of the utility model are: its structure is simple, design rationally, is more advantageous to chip removal and cutting fluid flows into Helicla flute improves the puzzlement of chip removal chip breaking, is greatly improved chip removal efficiency when cutting, row when difficult cutting metal being avoided to cut It considers to be worth doing unsmooth, causes that high temperature bond occurs for deformation of products and material and winding cutter phenomenon generates, ensure that workpiece machining surface matter Amount and cutter life, the drilling suitable for difficult-to-machine materials such as high temperature alloy, titanium alloys are processed, and can effectively solve the problem that chip breaking Difficult, easy the problems such as twining bits, tool life is improved, guarantees processing quality and processing efficiency.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the sectional view of flank in the utility model；

Wherein: 1- apex point, 2- flank, 3- chip dividing groove, the face 4-A, 5- groove face, the face 6-B, 7- transition face, 8- first are repaired Flour milling, the second reconditioning face 9-.

Specific embodiment

In order to deepen the understanding to the utility model, the utility model is done further below in conjunction with drawings and examples Detailed description, the embodiment are only used for explaining the utility model, do not constitute and limit to the protection scope of the utility model.

As shown, the technical solution of the present embodiment is: a kind of reconditioning with the chip dividing groove bits that die bore, including drillstock and The cutter hub of twisted shape, the top of the cutter hub are apex point 1, are set on the apex point there are two the flank 2 being centrosymmetric, described Flank 2 is equipped with a chip dividing groove 3, and the flank is divided into the face A 4, groove face 5 and the face B 6, the groove face 5 and the face A 4 Between be equipped with a transition face 7, the rear ditch rib in the face A 4 and the rear ditch rib in the face B 6 are the same as the root of the tail rib one at the top of the cutter hub It rises and forms a hook surface disconnected by the chip dividing groove 3, i.e. institute before the cutter hub along chisel edge direction reconditioning processing simultaneously Stating hook surface includes the first reconditioning face 8 and the second reconditioning face 9, and the cutter hub surface is coated with titanium aluminum nitride coating.

The groove face 5 and the angle between horizontal plane are 10 °, and the angle between the groove face 5 and the transition face 7 is 45 °, the sharp angle of the apex point 1 is 135 °, and relief grinding relief angle is 10 °, and the chisel edge length of the apex point is no more than 1mm.

It dies to consider to be worth doing the present embodiment provides a kind of reconditioning with chip dividing groove and bore, chip dividing groove, Neng Goushun are set in drill bit flank Dust in benefit discharge drilling process, coolant liquid flow smoothly.The first reconditioning face and second is arranged before the cutter hub to repair Flour milling increases the length of cutting edge, is thinned the thickness of cutting of outside, is more advantageous to chip removal and cutting fluid flows into spiral Slot, and clast is discharged rapidly, to reduce drilling resistance, reduce the thermic load in its unit sword length.In the knife body surface Face is coated with titanium aluminum nitride coating, improves the wearability and antioxygenic property of cutter hub, reduces coefficient of friction, prevents from bonding.

The beneficial effect of the present embodiment is: its structure is simple, and design rationally, is more advantageous to chip removal and cutting fluid flows into spiral shell Spin slot improves the puzzlement of chip removal chip breaking, is greatly improved chip removal efficiency when cutting, chip removal when difficult cutting metal being avoided to cut It is unsmooth, cause deformation of products and material that high temperature bond and winding cutter phenomenon generation occurs, ensure that workpiece machining surface quality And cutter life, the drilling suitable for difficult-to-machine materials such as high temperature alloy, titanium alloys are processed, and can effectively solve the problem that chip breaking Difficult, easy the problems such as twining bits, tool life is improved, guarantees processing quality and processing efficiency.

It should be understood by those skilled in the art that the present utility model is not limited to the above embodiments, above-described embodiment and Only illustrate the principles of the present invention described in specification, on the premise of not departing from the spirit and scope of the utility model, The utility model also has various changes and improvements, these changes and improvements both fall within the scope of the claimed invention It is interior.The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. a kind of reconditioning with chip dividing groove is died, bits are bored, the cutter hub including drillstock and twisted shape, it is characterised in that: the top of the cutter hub End is apex point, is set on the apex point there are two the flank being centrosymmetric, and the flank is equipped with a chip dividing groove, will be described Flank is divided into the face A, groove face and the face B, between the groove face and the face A be equipped with a transition face, the rear ditch rib in the face A and The rear ditch rib in the face B is with the root of the tail rib at the top of the cutter hub together simultaneously along chisel edge direction reconditioning processing before the cutter hub Face forms a hook surface disconnected by the chip dividing groove, i.e., the described hook surface includes the first reconditioning face and the second reconditioning face.

2. a kind of reconditioning with chip dividing groove is died to consider to be worth doing and be bored according to claim 1, it is characterised in that: the groove face and level Angle between face is 10 ° ± 5 °.

3. a kind of reconditioning with chip dividing groove bits that die bore according to claim 1, it is characterised in that: the groove face and described Angle between transition face is acute angle.

4. a kind of reconditioning with chip dividing groove is died to consider to be worth doing and be bored according to claim 1, it is characterised in that: the sharp angle of the apex point It is 135 ° ± 5 °, relief grinding relief angle is 8 ° ± 12 °.

5. a kind of reconditioning with chip dividing groove is died to consider to be worth doing and be bored according to claim 1, it is characterised in that: the cutter hub surface applies It is covered with titanium aluminum nitride coating.

6. a kind of reconditioning with chip dividing groove is died to consider to be worth doing and be bored according to claim 1, it is characterised in that: the chisel edge of the apex point Of length no more than 1mm.