CN214920834U

CN214920834U - Unequal rake angle milling cutter

Info

Publication number: CN214920834U
Application number: CN202121198882.9U
Authority: CN
Inventors: 王玉明
Original assignee: Dalian Hengrui Precision Machinery Co ltd
Current assignee: Dalian Hengrui Precision Machinery Co ltd
Priority date: 2021-06-01
Filing date: 2021-06-01
Publication date: 2021-11-30
Anticipated expiration: 2031-06-01

Abstract

The utility model belongs to the technical field of milling cutter, in particular to a milling cutter with unequal rake angles, which comprises a cutter handle, a cutter head, an end face cutting edge and a peripheral cutting edge, wherein the cutter head is fixedly connected to the left side of the cutter handle, the end face cutting edge and the peripheral cutting edge are arranged on the left side of the cutter head, two groups of the peripheral cutting edges are provided with a radial rake angle I and a radial rake angle II respectively, and the angle of the radial rake angle I is different from the angle of the radial rake angle II; the utility model discloses in, through being divided into two sets ofly with four periphery cutting edges, and two sets of radial rake angle one and radial rake angle two size differences for the sharpness of blade is different, and then the atress direction of blade when the cutting is different, thereby reduces and has eliminated the resonance phenomenon in the cutting, has reduced the atress degree of cutting edge, has improved the life of cutter.

Description

Unequal rake angle milling cutter

Technical Field

The utility model relates to a milling cutter technical field specifically is a rake angle milling cutter varies.

Background

A milling cutter is a rotary tool for cutting machining having one or more cutter teeth, which is mainly used in milling machines for machining planes, steps, grooves, formed surfaces, cutting off workpieces and the like.

When the milling cutter works, the allowance of a workpiece is sequentially and intermittently cut off through each cutter tooth, most of the traditional four-edge milling cutters are in a mode of equally dividing front and rear corners, and if the rotating speed is too high or the rigidity of a workpiece clamping system is not good, the cutter vibration phenomenon is very easy to generate, so that the service life of the cutter is seriously influenced; accordingly, an unequal rake milling cutter has been proposed to address the above problems.

SUMMERY OF THE UTILITY MODEL

In order to compensate prior art's not enough, solve traditional four-edge milling cutter and be the form of fore-foot, relief angle of equalling divide mostly, if very easily produce the sword phenomenon that shakes under the too high or not good condition of work piece clamping system rigidity of rotational speed, seriously influenced the life's of cutter problem, the utility model provides a rake angle milling cutter varies.

The utility model provides a technical scheme that its technical problem adopted is: the utility model discloses a milling cutter with unequal rake angles, which comprises a cutter handle, a cutter head, end face cutting edges and peripheral cutting edges, wherein the cutter head is fixedly connected to the left side of the cutter handle, the end face cutting edges and the peripheral cutting edges are arranged on the left side of the cutter head, two groups of the peripheral cutting edges are provided, a radial rake angle I and a radial rake angle II are respectively arranged on the two groups of the peripheral cutting edges, and the angle of the radial rake angle I is different from that of the radial rake angle II; through dividing into two sets ofly with four peripheral cutting edges, and two sets of radial rake angle one and radial rake angle two size difference for the sharpness of blade is different, and then the blade atress direction when the cutting is different, thereby reduces and has eliminated the resonance phenomenon in the cutting, has reduced the atress degree of cutting edge, has improved the life of cutter.

Preferably, a spiral chip groove is formed in the cutter head between the two groups of peripheral cutting edges; the spiral chip groove arranged on the tool bit enables the cutting edge to discharge the waste chips during cutting, and the waste chips are prevented from being accumulated to influence the cutting process.

Preferably, the outer wall of the cutter handle is sleeved with a fixing sleeve, the outer side of the fixing sleeve is provided with an installation sleeve, and the outer wall of the fixing sleeve is uniformly provided with a plurality of positioning clamping grooves; through the cooperation between spring one, positioning fixture block and the positioning slot, the fixed mounting between fixed cover and the installation cover of being convenient for, and then the installation cover of being convenient for adapts to the handle of a knife of equidimension not.

Preferably, a plurality of limiting grooves are uniformly formed in the inner side end face of the mounting sleeve, an adjusting block is arranged on the inner wall of each limiting groove, a first spring is fixedly connected to one side end face of the adjusting block close to the fixing sleeve, the other end of the first spring is fixedly connected with one end of a limiting rod, the other end of the limiting rod penetrates through the limiting groove and is fixedly connected with a positioning clamping block, the positioning clamping block is attached to the positioning clamping groove, and the limiting rod is connected with the limiting grooves in a sliding mode; the elastic potential energy of the spring I drives the limiting rod to slide, so that the positioning clamping block fixedly connected with the limiting rod slides into the corresponding positioning clamping groove, the primary fixing of the fixing sleeve and the mounting sleeve is completed, and the fixing effect is further guaranteed due to the positioning clamping block type rubber material.

Preferably, a plurality of grooves are uniformly formed in the outer wall of the mounting sleeve, knobs are arranged in the grooves, a threaded rod is fixedly connected to one side of each knob, the other end of each threaded rod extends into a limiting groove and is rotatably connected with an adjusting plate through a bearing, and the adjusting plate is slidably connected with the limiting groove; the adjusting plate is driven to slide in the limiting groove through rotation of the threaded rod, then the position of the first spring is adjusted, the fixing effect can be further enhanced after the positioning clamping block is attached to the positioning clamping groove, and the positioning clamping block can be adjusted so as to adapt to tool handles of different sizes.

Preferably, a screw hole is formed between the groove and the limiting groove, and the threaded rod is in threaded connection with the screw hole; through the screw thread fit between the screw hole and the threaded rod which are arranged between the groove and the limiting groove, the transmission is convenient.

The utility model discloses an useful part lies in:

1. in the utility model, the four peripheral cutting edges are divided into two groups, and the radial rake angles I and the radial rake angles II of the two groups are different in size, so that the sharpness of the cutting edges is different, and the stress directions of the cutting edges during cutting are different, thereby reducing and eliminating the resonance phenomenon during cutting, reducing the stress degree of the cutting edges and prolonging the service life of the cutter;

2. the utility model discloses in, the elastic potential energy that has through spring one drives the gag lever post and slides, make and slide into among the corresponding positioning groove with the positioning fixture block of gag lever post rigid coupling, accomplish the preliminary fixed of fixed cover and installation cover, positioning fixture block formula rubber material has again, fixed effect has further been guaranteed, it slides in the spacing inslot to rotate the drive regulating plate through the threaded rod, and then adjust the position of spring one, not only can further strengthen fixed effect after positioning fixture block and positioning groove laminate, also can adjust positioning fixture block, so that adapt to the not handle of a knife of equidimension.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, 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 the drawings without inventive exercise.

FIG. 1 is a schematic perspective view of a milling cutter according to an embodiment;

FIG. 2 is a schematic side view of a milling cutter according to an embodiment;

FIG. 3 is a schematic view showing the internal structure of the mounting sleeve and the fixing sleeve according to the first embodiment;

FIG. 4 is a schematic view of a portion of the enlarged structure at A in FIG. 3;

fig. 5 is a partial structural schematic diagram of the second embodiment.

In the figure: 1. a knife handle; 2. a cutter head; 3. an end face cutting edge; 4. a peripheral cutting edge; 5. a spiral chip groove; 6. a radial rake angle one; 7. a radial rake angle of two; 8. fixing a sleeve; 9. installing a sleeve; 10. positioning the clamping groove; 11. a limiting groove; 12. an adjusting block; 13. a first spring; 14. a limiting rod; 15. positioning a fixture block; 16. a threaded rod; 17. a groove; 18. and a second spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example one

Referring to fig. 1-4, the unequal rake milling cutter includes a cutter handle 1, a cutter head 2, end face cutting edges 3 and peripheral cutting edges 4, the cutter head 2 is fixedly connected to the left side of the cutter handle 1, the end face cutting edges 3 and the peripheral cutting edges 4 are arranged on the left side of the cutter head 2, two groups of the peripheral cutting edges 4 are provided, a radial rake angle first 6 and a radial rake angle second 7 are respectively arranged on the two groups of the peripheral cutting edges 4, and the angle of the radial rake angle first 6 is different from the angle of the radial rake angle second 7; during operation, four peripheral cutting edges 4 are divided into two groups, and two groups of radial rake angles 6 and two groups of radial rake angles 7 are different in size, so that the sharpness of the cutting edges is different, the stress directions of the cutting edges during cutting are different, the resonance phenomenon in cutting is reduced and eliminated, the stress degree of the cutting edges is reduced, and the service life of the cutter is prolonged.

A spiral chip groove 5 is arranged on the tool bit 2 between the two groups of peripheral cutting edges 4; during operation, the spiral chip discharge grooves 5 formed in the tool bit 2 enable the cutting edges to discharge waste chips during cutting, and waste chip accumulation is avoided to influence the cutting process.

The outer wall of the knife handle 1 is sleeved with a fixed sleeve 8, the outer side of the fixed sleeve 8 is provided with a mounting sleeve 9, and the outer wall of the fixed sleeve 8 is uniformly provided with a plurality of positioning clamping grooves 10; during operation, through the cooperation between the first spring 13, the positioning clamping block 15 and the positioning clamping groove 10, the fixed sleeve 8 and the mounting sleeve 9 can be fixedly mounted conveniently, and the mounting sleeve 9 can be adapted to tool shanks 1 with different sizes conveniently.

A plurality of limiting grooves 11 are uniformly formed in the inner side end face of the mounting sleeve 9, an adjusting block 12 is arranged on the inner wall of each limiting groove 11, a first spring 13 is fixedly connected to one side end face of each adjusting block 12 close to the corresponding fixing sleeve 8, the other end of each first spring 13 is fixedly connected with one end of a limiting rod 14, the other end of each limiting rod 14 penetrates through the corresponding limiting groove 11 to be fixedly connected with a positioning clamping block 15, the positioning clamping block 15 is attached to the corresponding positioning clamping groove 10, and the limiting rods 14 are slidably connected with the corresponding limiting grooves 11; during operation, when installing handle of a knife 1, the staff slides in the fixed cover 8 in the handle of a knife 1 outside the installation cover 9, drives gag lever post 14 through the elastic potential energy that spring 13 has and slides for among the positioning fixture block 15 with the gag lever post 14 rigid coupling slides in corresponding positioning slot 10, accomplish fixed cover 8 and the preliminary fixed of installation cover 9, have positioning fixture block 15 formula rubber material again, further guaranteed fixed effect.

A plurality of grooves 17 are uniformly formed in the outer wall of the mounting sleeve 9, a knob is arranged in each groove 17, a threaded rod 16 is fixedly connected to one side of the knob, the other end of the threaded rod 16 extends into the limiting groove 11 and is rotatably connected with an adjusting plate through a bearing, and the adjusting plate is slidably connected with the limiting groove 11; during operation drives threaded rod 16 rotatory through rotating the knob for the regulating plate that is connected with threaded rod 16 rotation slides in spacing groove 11, and then adjusts the position of spring 13, not only can further strengthen fixed effect after positioning fixture block 15 and positioning slot 10 laminate, also can adjust positioning fixture block 15, so that adapt to not equidimension handle of a knife 1.

A screw hole is formed between the groove 17 and the limiting groove 11, and the threaded rod 16 is in threaded connection with the screw hole; when the screw is in work, the screw hole arranged between the groove 17 and the limiting groove 11 is matched with the screw thread 16, so that transmission is facilitated.

Example two

Referring to fig. 5, as another implementation manner of the present invention, in a first comparative example, a second spring 18 is sleeved on the limiting rod 14, one end of the second spring 18 is fixedly connected to the positioning fixture block 15, and the other end of the second spring 18 is fixedly connected to the inner wall of the mounting sleeve 9; during operation, the positioning clamping blocks 15 are further tightly attached to the positioning clamping grooves 10 through elastic potential energy of the second spring 18, and accordingly the fixing effect of the mounting sleeve 9 and the fixing sleeve 8 is improved.

The working principle is that four peripheral cutting edges 4 are divided into two groups, and the radial rake angles I6 and the radial rake angles II 7 of the two groups are different in size, so that the sharpness of the cutting edges is different, and further the stress directions of the cutting edges are different during cutting, resonance phenomena during cutting are reduced and eliminated, the stress degree of the cutting edges is reduced, the service life of a cutter is prolonged, the cutting edges can discharge scraps during cutting through the spiral scrap discharge grooves 5 arranged on the cutter head 2, the phenomenon that the scraps are accumulated to influence the cutting process is avoided, when the cutter handle 1 is installed, a worker slides the fixing sleeve 8 on the outer side of the cutter handle 1 into the mounting sleeve 9, drives the limiting rod 14 to slide through elastic potential energy of the first spring 13, so that the positioning clamping blocks 15 fixedly connected with the limiting rod 14 slide into the corresponding positioning clamping grooves 10, and primary fixing of the fixing sleeve 8 and the mounting sleeve 9 is completed, the positioning fixture block 15 is made of rubber, so that the fixing effect is further guaranteed, the threaded rod 16 is driven to rotate by rotating the knob, the adjusting plate connected with the threaded rod 16 in a rotating mode slides in the limiting groove 11, the position of the first spring 13 is adjusted, the fixing effect can be further enhanced after the positioning fixture block 15 is attached to the positioning fixture groove 10, and the positioning fixture block 15 can be adjusted to adapt to tool shanks 1 of different sizes.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims

1. An unequal rake angle milling cutter characterized by: including handle of a knife (1), tool bit (2), end cutting edge (3) and periphery cutting edge (4), the left side fixedly connected with tool bit (2) of handle of a knife (1), the left side of tool bit (2) is equipped with end cutting edge (3) and periphery cutting edge (4), periphery cutting edge (4) have two sets ofly, two sets of be equipped with radial rake angle (6) and radial rake angle two (7) on periphery cutting edge (4) respectively, the angle of radial rake angle (6) is different with the angle size of radial rake angle two (7).

2. The unequal rake angle milling cutter according to claim 1, wherein: and a spiral chip groove (5) is arranged on the tool bit (2) between the two groups of peripheral cutting edges (4).

3. The unequal rake angle milling cutter according to claim 2, wherein: the outer wall of the knife handle (1) is sleeved with a fixed sleeve (8), the outer side of the fixed sleeve (8) is provided with an installation sleeve (9), and the outer wall of the fixed sleeve (8) is uniformly provided with a plurality of positioning clamping grooves (10).

4. A differential rake milling cutter as set forth in claim 3, wherein: the utility model discloses a spacing groove (11) of installing, including installation cover (9), the inboard terminal surface of installation cover (9) is even is equipped with a plurality of spacing grooves (11), the inner wall of spacing groove (11) is equipped with regulating block (12), one side end fixedly connected with spring (13) that regulating block (12) are close to fixed cover (8), the other end of spring (13) and the one end fixed connection of gag lever post (14), the other end of gag lever post (14) runs through spacing groove (11) and positioning fixture block (15) fixed connection, positioning fixture block (15) laminate mutually with positioning fixture groove (10), gag lever post (14) and spacing groove (11) sliding connection.

5. The unequal rake angle milling cutter according to claim 4, wherein: even be equipped with a plurality of recesses (17) on the outer wall of installing sleeve (9), be equipped with the knob in recess (17), one side rigid coupling threaded rod (16) of knob, the other end of threaded rod (16) extends to and is connected through bearing and regulating plate rotation in spacing groove (11), regulating plate and spacing groove (11) sliding connection.

6. The unequal rake angle milling cutter according to claim 5, wherein: a screw hole is arranged between the groove (17) and the limiting groove (11), and the threaded rod (16) is in threaded connection with the screw hole.