CN214602130U

CN214602130U - Milling cutter with oil guide groove

Info

Publication number: CN214602130U
Application number: CN202022996991.7U
Authority: CN
Inventors: 肖跃勇; 方曙璋; 冯佳; 曾滔; 罗胜
Original assignee: Zhuzhou Cemented Carbide Cutting Tools Co Ltd
Current assignee: Zhuzhou Cemented Carbide Cutting Tools Co Ltd
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-11-05
Anticipated expiration: 2030-12-11

Abstract

The utility model discloses a milling cutter of oil groove is led in area, including cutting portion and stalk portion, the cutting portion includes a plurality of spiral chip grooves, and the part between two adjacent spiral chip grooves constitutes the sword lamella, the tip of sword lamella is equipped with the end sword, the circumference of sword lamella is equipped with week sword, be equipped with along the direction of spiral in the spiral chip groove and lead the oil groove, be equipped with the stalk portion oil groove on the stalk portion periphery, each lead the oil groove all with stalk portion oil groove intercommunication. The utility model has the advantages of the cooling and lubrication effect is good, can make iron fillings faster discharge, promote milling cutter's cutting performance and cutting efficiency, cutter long service life from spiral chip groove.

Description

Milling cutter with oil guide groove

Technical Field

The utility model relates to a cutting process especially relates to a milling cutter of oil groove is led in area.

Background

In the cutting process, when a milling cutter performs grooving or large-depth cutting, a large amount of cutting heat is generated, the generated cutting heat is often accompanied with the increase of cutting temperature, the cutting edge of the hard alloy milling cutter is easy to generate hot cracks, and the cutting edge is broken, so that the service life of the cutter is shortened and the quality of the processed surface is poor. And through proper cooling and lubricating conditions, the cutting temperature can be well reduced, and the cutting performance of the cutter is improved. The cooling improvement of the existing structure is mostly single to optimize an internal cooling or external cooling structure, and the improvement is less under the internal and external cooling conditions.

The prior art discloses milling cutter of oil groove is opened to stalk portion, through the oil groove structure of opening of seting up 3 axial settings at the stalk portion, improved inside and outside cooling lubrication effect to promote cutter life-span etc. although such structural design increases the cooling effect of sword stalk portion comparatively obviously, but the iron fillings that nevertheless can not promote simultaneously curl and the discharge effect, more can not strengthen the cooling lubrication effect to the end tooth.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is overcome prior art not enough, provide a cutting edge cooling and lubrication effect, can make iron fillings faster discharge, promote milling cutter's cutting performance and the milling cutter of leading oil groove in the area of cutting efficiency from spiral chip groove.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a milling cutter of oil groove is led in area, includes cutting portion and stalk portion, the cutting portion includes a plurality of spiral chip grooves, and the part between two adjacent spiral chip grooves constitutes the sword lamella, the tip of sword lamella is equipped with the end sword, the circumference of sword lamella is equipped with week sword, be equipped with along the direction of spiral in the spiral chip groove and lead the oil groove, be equipped with the stalk portion oil groove on the stalk portion periphery, each leads the oil groove and all communicates with stalk portion oil groove.

As a further improvement of the technical scheme, the circumferential surface of the handle part is provided with an annular oil groove, the handle part oil groove is communicated with the annular oil groove, and each oil guide groove is communicated with the annular oil groove.

As a further improvement of the technical scheme, a certain gap is formed between the annular oil groove and the spiral chip groove, and the annular oil groove and the spiral chip groove are communicated through a transition passage.

As the further improvement of the technical scheme, an oil storage tank is arranged on the end face of the tail end of the handle part, and the oil tank of the handle part is communicated with the oil storage tank.

As a further improvement of the technical scheme, the depth of the oil groove on the tail end face of the handle is H1, the depth of the oil storage groove is H2, and H2 is not less than 2H 1.

As a further improvement of the technical scheme, the oil guide groove is formed in the bottom of the spiral chip groove.

As a further improvement of the above technical solution, the end of the cutting portion corresponding to the end blade is provided with an end chip flute, and the spiral chip flute is communicated with the end chip flute.

As a further improvement of the technical scheme, in the section perpendicular to the axis of the cutting part, the included angle between the oil guide groove and the peripheral edge is gamma, and gamma is more than or equal to 15 degrees and less than or equal to 25 degrees.

As a further improvement of the technical scheme, the oil guide groove is a V-shaped groove, the included angle between the side walls of the two sides of the oil guide groove is alpha, and the alpha is more than or equal to 45 degrees and less than or equal to 120 degrees.

The utility model provides a milling cutter of oil groove is led in area, includes cutting portion and stalk portion, the cutting portion includes a plurality of spiral chip grooves, and the part between two adjacent spiral chip grooves constitutes the sword lamella, the tip of sword lamella is equipped with the end sword, the circumference of sword lamella is equipped with week sword, be equipped with along the direction of spiral in the spiral chip groove and lead the oil groove, be equipped with a plurality of stalk portion oil grooves on the stalk portion periphery, have at least one lead oil groove and a stalk portion oil groove intercommunication.

Compared with the prior art, the utility model has the advantages of:

the milling cutter with the oil guide groove of the utility model is communicated with the oil guide groove through the oil groove on the handle part, so that the cooling liquid oil guide groove can be guided to enter the cutter edge part, the end edge and the peripheral edge are cooled, and the cooling effect is improved; because lead the oil groove setting in spiral chip groove, when processing, can know according to the metal cutting principle, most cutting heat transmits to iron fillings, when the iron fillings of high temperature met microthermal coolant liquid, because expend with heat and contract with cold's reason, can produce a curling force to iron fillings, make the iron fillings attenuate, the coolant liquid of leading out in the oil groove simultaneously can give iron fillings thrust, make iron fillings discharge from spiral chip groove faster, consequently, can be appropriate improvement cutting parameter, promote milling cutter's cutting performance, and the efficiency of cutting is improved, and the service life of the tool is prolonged.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a view P-P of fig. 1.

Fig. 3 is a schematic structural view of the oil groove and the oil storage groove of the middle handle part of the present invention.

The reference numerals in the figures denote:

1. a cutting portion; 2. a handle; 3. a spiral chip groove; 4. a land; 5. an end blade; 6. a peripheral edge; 7. an oil guide groove; 8. a shank oil groove; 9. an annular oil groove; 10. an oil storage tank; 11. an end chip pocket; 12. a transition passage.

Detailed Description

The invention is described in further detail below with reference to the drawings and specific examples.

Example 1

As shown in fig. 1 to 3, the milling cutter with oil guide grooves of the present embodiment includes a cutting portion 1 and a shank portion 2, the cutting portion 1 includes at least two spiral flutes 3, a portion between two adjacent spiral flutes 3 constitutes a cutting edge 4, an end edge 5 is provided at an end of the cutting edge 4, a circumferential edge 6 is provided in a circumferential direction of the cutting edge 4, oil guide grooves 7 are provided in the spiral flutes 3 along a spiral direction, a shank portion oil groove 8 is provided on a circumferential surface of the shank portion 2, and each oil guide groove 7 is communicated with the shank portion oil groove 8. The cutting portion 1 and the shank portion 2 are of unitary construction. The helical flutes 3 extend to the end (front end) of the cutting portion 1 at one end and at the intersection of the cutting portion 1 and the shank 2 at the other end.

In the present embodiment, four helical flutes 3 are taken as an example, and the number of the oil guide grooves 7 and the number of the blade lands 4 are also four.

The cooling liquid enters the oil guide groove 7 and the spiral chip groove 3 through the oil groove 8 of the handle part and is discharged from the front end of the cutting part 1, so that on one hand, the end blade 5 and the peripheral blade 6 can be cooled and lubricated, the cutting temperature at the end blade 5 and the peripheral blade 6 can be reduced, and particularly, the possibility of generating hot cracks on the cutting blade can be reduced during large-cutting-parameter processing; during side milling, the coolant liquid flows to spiral chip groove 3 outward in by leading oil groove 7, there is an outside thrust to iron fillings, can make more smooth and easy discharge of iron fillings go, high temperature's iron fillings meet microthermal coolant liquid simultaneously, because the reason of expend with heat and contract with cold, can produce a curling force to iron fillings, make the iron fillings attenuate, can curl fast and cool off, make the iron fillings can more smooth and easy discharge away from spiral chip groove 3 in, therefore, increase cutting quantity that can be appropriate, promote milling cutter's cutting performance, improve cutting efficiency, increase cutter life.

In this embodiment, the annular oil groove 9 is provided on the circumferential surface of the handle 2, and a gap is provided between the annular oil groove 9 and the spiral flute 3, and the two are communicated through a transition passage 12. The shank sump 8 communicates with the annular sump 9. The number of shank flutes 8 does not need to be set too high by the arrangement of the annular flutes 9. In the present embodiment, two shank oil grooves 8 are provided. In other embodiments, one, three, or more than three shank grooves 8 may be provided, or may be asymmetrically provided.

In this embodiment, the tail end terminal surface of stalk portion 2 is equipped with oil storage tank 10, two stalk portion oil grooves 8 and oil storage tank 10 intercommunication, and two stalk portion oil grooves 8 are 180 symmetrical arrangement. The depth of the handle oil groove 8 on the end surface of the tail end of the handle 2 is H1, the depth of the oil storage groove 10 is H2, H2 is more than or equal to 2H1, and due to the arrangement of the depth, the oil storage groove 10 can store a part of impurities in a proper amount, so that the requirement on the purity of cooling liquid is lowered, and the manufacturing cost of processing enterprises is lowered; meanwhile, due to the arrangement of the annular oil grooves 9, under the condition that the clamping of the cutter is not influenced, the cooling liquid can reach each oil guide groove 7, and each cutting edge is fully cooled. To the lathe that has interior cooling device, the coolant liquid flows into oil storage tank 10 earlier, and the annular oil groove 9 of rethread two stalk portion oil grooves 8 flow direction (annular oil groove 9 sets up the clamping part that surpasss stalk portion 2, can not interfere annular oil groove 9 when centre gripping stalk portion 2 promptly), flows into oil guide groove 7 by transition channel 12, cools off or lubricates week sword 6 and end sword 5.

In this embodiment, the end portion of the cutting portion 1 is provided with an end chip pocket 11 corresponding to the end blade 5, the spiral chip pocket 3 is communicated with the end chip pocket 11, and the spiral chip pocket 3 penetrates through the end portion, that is, the end chip pocket 11 is in the spiral chip pocket 3, and the arrangement of the end chip pocket 11 increases the contact between the cooling liquid and the end blade 5, guides the cooling liquid in the oil guide groove 7 to enter the end blade 5, cools the end blade 5, and promotes smooth discharge of iron chips in the end tooth chip pocket 11.

In this embodiment, the oil guide groove 7 is formed at the bottom of the spiral flute 3. In a cross section perpendicular to the axis of the cutting part 1, the included angle between the oil guide groove 7 and the peripheral edge 6 is gamma, and gamma is any value (including two end points) within 15-25 degrees. The oil guide groove 7 is a V-shaped groove, the included angle between the side walls of the two sides of the oil guide groove 7 is alpha, and the alpha is any value (including two end points) within 45-120 degrees. The depth of the oil guide groove 7 is h, and h is any value (including two endpoints) within 0.5 mm-3 mm.

In this embodiment, the diameter of the milling cutter with the oil guide groove is D, and D is any value (including two end points) within 12mm to 32 mm. The cutting portion 1 and the shank 2 of the milling cutter are made of cemented carbide.

Example 2

The milling cutter with oil guide grooves of the present embodiment is different from embodiment 1 in that:

in this embodiment, the number of the spiral chip grooves 3 is four, the number of the oil guide grooves 7 is four, the number of the handle part oil grooves 8 on the circumferential surface of the handle part 2 is also four, and one oil guide groove 7 is directly communicated with one handle part oil groove 8. The annular oil groove 9 and the transition passage need not be provided.

The rest parts which are not described are basically the same as the embodiment 1, and the description is omitted.

Example 3

in this embodiment, the spiral chip grooves 3 are four, the number of the oil guide grooves 7 is three, the number of the handle part oil grooves 8 on the circumferential surface of the handle part 2 is four, two oil guide grooves 7 are communicated with one handle part oil groove 8, and the rest two oil guide grooves 7 are respectively communicated with the handle part oil groove 8 through the transition passage 12 without the arrangement of the annular oil groove 9.

The cutting part 1 and the handle part 2 of the utility model can be a fixed structure or a split structure, and the two are fixedly connected into a whole. The utility model discloses a plurality of indicate two and more than two.

The utility model can be applied to not only four blades but also milling cutters with oil guide grooves with other blade numbers such as two blades, three blades, five blades, six blades and the like; the utility model discloses not only can be applied to flat end milling cutter, can also be applied to fillet milling cutter and bulb milling cutter.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the technical solution of the present invention, using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a milling cutter of oil groove is led in area which characterized in that: including cutting portion (1) and stalk portion (2), cutting portion (1) includes a plurality of spiral chip grooves (3), and the part between two adjacent spiral chip grooves (3) constitutes sword lamella (4), the tip of sword lamella (4) is equipped with end sword (5), the circumference of sword lamella (4) is equipped with week sword (6), be equipped with along the direction of spiral in spiral chip groove (3) and lead oil groove (7), be equipped with stalk portion oil groove (8) on stalk portion (2) periphery, each leads oil groove (7) and all communicates with stalk portion oil groove (8).

2. The milling cutter with oil guide groove according to claim 1, wherein: be equipped with annular oil groove (9) on stalk portion (2) the circumferential surface, stalk portion oil groove (8) and annular oil groove (9) intercommunication, respectively lead oil groove (7) all with annular oil groove (9) intercommunication.

3. The milling cutter with oil guide groove according to claim 2, wherein: a certain gap is formed between the annular oil groove (9) and the spiral chip groove (3), and the annular oil groove and the spiral chip groove are communicated through a transition channel (12).

4. The milling cutter with the oil guide groove according to any one of claims 1 to 3, wherein: the tail end terminal surface of stalk portion (2) is equipped with oil storage tank (10), stalk portion oil groove (8) and oil storage tank (10) intercommunication.

5. The milling cutter with oil guide groove according to claim 4, wherein: the depth of the handle oil groove (8) on the end surface of the tail end of the handle (2) is H1, the depth of the oil storage groove (10) is H2, and H2 is more than or equal to 2H 1.

6. The milling cutter with the oil guide groove according to any one of claims 1 to 3, wherein: the oil guide groove (7) is formed in the bottom of the spiral chip groove (3).

7. The milling cutter with the oil guide groove according to any one of claims 1 to 3, wherein: the end part of the cutting part (1) is provided with an end chip groove (11) corresponding to the end blade (5), and the spiral chip groove (3) is communicated with the end chip groove (11).

8. The milling cutter with the oil guide groove according to any one of claims 1 to 3, wherein: in a section perpendicular to the axis of the cutting part (1), the included angle between the oil guide groove (7) and the peripheral edge (6) is gamma, and gamma is more than or equal to 15 degrees and less than or equal to 25 degrees.

9. The milling cutter with the oil guide groove according to any one of claims 1 to 3, wherein: the oil guide groove (7) is a V-shaped groove, the included angle between the side walls of the two sides of the oil guide groove (7) is alpha, and the alpha is more than or equal to 45 degrees and less than or equal to 120 degrees.

10. The utility model provides a milling cutter of oil groove is led in area which characterized in that: including cutting portion (1) and stalk portion (2), cutting portion (1) includes a plurality of spiral chip grooves (3), and the part between two adjacent spiral chip grooves (3) constitutes sword lamella (4), the tip of sword lamella (4) is equipped with end sword (5), the circumference of sword lamella (4) is equipped with week sword (6), be equipped with along the direction of spiral in spiral chip groove (3) and lead oil groove (7), be equipped with a plurality of stalk portion oil grooves (8) on stalk portion (2) the circumferential surface, have at least one lead oil groove (7) and a stalk portion oil groove (8) intercommunication.