CN220659340U

CN220659340U - Face milling cutter

Info

Publication number: CN220659340U
Application number: CN202322308317.9U
Authority: CN
Inventors: 卜学军; 张小燕; 李朦特; 项敏杰; 田晓奇
Original assignee: Hangzhou Chai Tools Co ltd
Current assignee: Hangzhou Chai Tools Co ltd
Priority date: 2023-08-26
Filing date: 2023-08-26
Publication date: 2024-03-26
Anticipated expiration: 2033-08-26

Abstract

The application relates to the technical field of cutting tools, in particular to a face milling cutter, which comprises a cutter disc and a plurality of blades, wherein a plurality of fixing grooves are formed in the side face of the cutter disc, locking wedge blocks are arranged in the fixing grooves, the blades are identical and respectively correspond to the fixing grooves one by one, and the fixing grooves clamp the blades with the corresponding locking wedge blocks; the blades are provided with a main deflection angle cutting edge and a polishing auxiliary edge which are perpendicular to each other, the main deflection angle cutting edge is perpendicular to the working face of the cutterhead and protrudes out of the side face of the cutterhead, and the polishing auxiliary edge is parallel to the working face of the cutterhead and protrudes out of the working face of the cutterhead. The blade is clamped in the fixing groove by the locking wedge block, so that the installation and the positioning of the blade are realized; the main deflection angle cutting edge and the polishing auxiliary edge are perpendicular to each other and arranged on the same blade, so that the cutting and polishing functions can be simultaneously met, two types of blades are not required to be arranged respectively, the number of the blades is reduced by half, and the mounting steps of the blades are simplified. The cutter blade mounting and adjusting step of the face milling cutter is simplified, and the cutter blade is quickly and accurately positioned on the cutter head.

Description

Face milling cutter

Technical Field

The application relates to the technical field of cutting tools, in particular to a face milling cutter.

Background

The surface milling cutter is also called a disc milling cutter, is a tool for processing a large-area metal plane by a vertical milling machine, an end surface milling machine or a planer type milling machine, and generally comprises a cutter disc and a plurality of blades, wherein the cutter disc is in a cylindrical shape or a hollow round table shape, plays a role in supporting the blades, and a plurality of blade fixing grooves are uniformly formed in the side face of the cutter disc and are fixed in the blade fixing grooves.

At present, face milling cutters are divided into a cutting blade and a polishing blade according to different setting angles of cutting edges, in the milling process, the cutting edge of the cutting blade is perpendicular to a surface to be processed, the cutting edge of the polishing blade is parallel to the surface to be processed, and different blade fixing grooves are formed in the same cutter head in general so as to respectively install the cutting blade and the polishing blade. In addition, the insert of the face milling cutter in the prior art is fixed to the cutter head by a structure such as a screw penetrating the insert.

In the above related art, the inventors found that at least the following problems exist: the cutter head is provided with two kinds of blades of cutting blade and coping blade, need install the timing respectively, waste time and energy.

Disclosure of Invention

In order to enable a blade to be rapidly and accurately positioned in a cutter head, the blade mounting and adjusting steps of the face milling cutter are simplified, and the face milling cutter is provided.

The application provides a face milling cutter adopts following technical scheme:

the face milling cutter comprises a cutter disc and a plurality of blades, wherein a plurality of fixing grooves are formed in the side face of the cutter disc, locking wedge blocks are arranged in the fixing grooves, the blades correspond to the fixing grooves one by one, and the locking wedge blocks clamp the blades in the fixing grooves;

the blades are respectively provided with a main deflection angle cutting edge and a polishing auxiliary edge which are perpendicular to each other, the main deflection angle cutting edge is perpendicular to the working face of the cutterhead and protrudes out of the side face of the cutterhead, and the polishing auxiliary edge is parallel to the working face of the cutterhead and protrudes out of the working face of the cutterhead.

Through adopting above-mentioned technical scheme, the setting of the perpendicular to each other of main deflection angle cutting edge and the vice sword of pedicure is on same blade, and the main deflection angle cutting edge is outstanding to be used for cutting in blade disc side excircle, and the vice sword of pedicure is outstanding in the blade disc terminal surface, and the working face promptly makes the cutting face smooth and level like the scraper, satisfies cutting and pedicure function simultaneously, and the blade only needs to be pressed from both sides tightly at the fixed slot by the locking voussoir according to corresponding direction, accomplishes the installation location to the blade promptly, need not to set up two kinds of blades respectively, and blade installation quantity reduces by half, has simplified the installation step of blade.

Optionally: the locking wedge block is abutted against one side of the blade and inclined towards the direction of the central axis of the cutter head, and is fixed by bolts penetrating along the radial direction of the cutter head; and a convex edge parallel to the main deflection angle cutting edge is arranged on one side of the blade, which is abutted against the locking wedge block.

By adopting the technical scheme, the locking wedge block moves along the radial direction of the cutter disc along with the bolt, the locking wedge block abuts against the convex edge on the side surface of the blade, the inclined surface faces the convex edge to generate component force along the radial direction of the cutter disc, and the more the locking wedge block moves downwards, the larger the downward pressure applied to the blade is, until the blade is pressed at the bottom of the fixing groove. When the face milling cutter performs face milling operation, the cutter head rotates at a high speed, blades on the edge of the cutter head generate centrifugal force outwards along the radial direction of the cutter head, and the centrifugal force is opposite to the direction of the downward pressure of the locking wedge block on the blades, so that the two blades are tightly attached to each other, and the stability of the blades is further enhanced; in addition, the bolt hole formed by the bolt connected with the locking wedge block is arranged along the radial direction of the cutter disc, compared with a mode of fixing the blade by using a screw vertically penetrating through the blade, the formed screw hole and a space reserved for installing the screw are smaller, the mode of fixing the blade by using the locking wedge block occupies smaller space of the cutter disc, which means that denser blades can be arranged on the cutter disc with the same size, and the cutting efficiency of the face milling cutter is directly influenced by the number of the blades. More importantly, the screw holes penetrating through the blade also affect the strength of the blade, so that the service life of the blade is shortened.

Optionally: the blade is hexahedral in shape, the two opposite surfaces of the blade are provided with the convex ribs, and the convex ribs are arranged in the middle;

the edges of the blade parallel to the convex edges are provided with the main deflection angle cutting edges, and the edges perpendicular to the convex edges in the same plane are provided with the trimming auxiliary edges;

the fixing groove is abutted against one side of the blade, on which the convex edge is arranged, is inclined to the direction of the center axis of the cutter head.

By adopting the technical scheme, the convex edges on the side surfaces of the blade are parallel to the cutting edges with the main deflection angle, so that the two cutting edges can be rapidly distinguished, and when the blade is installed, the locking wedge block can be used for correctly pressing the blade only by installing the end surface provided with the cutting edge with the main deflection angle into the fixing groove along the radial direction of the cutter disc, so that the installation direction is guided; in addition, the opposite surfaces of the fixing groove and the locking wedge block incline towards the direction of the center axis of the cutter head, and downward pressure is applied to the convex edges of the cutter blade; the blade can be fixed and normally used no matter the blade is placed upside down or left and right, the installation is simple and convenient, errors can be avoided, the rapid positioning of the blade is realized, and the installation and adjustment steps of the blade are simplified.

Optionally: and an avoidance groove is formed in the position, which is abutted against the edge angle of the blade, of the fixing groove.

Through adopting above-mentioned technical scheme, dodge the groove and make hexahedral blade be located the blade front unsettled of the main deflection angle cutting edge and the vice edge angle department of pedicure in the fixed slot, the fixed slot only with each terminal surface butt of blade, avoid the blade front to be extrudeed the damage by the blade disc.

Optionally: the abutting surface of the locking wedge block and the fixing groove is a semicircular arc surface.

By adopting the technical scheme, the semicircular locking wedge blocks form a wrapping structure in the fixing groove, and the wrapping structure is more tightly contacted with the plane abutting surface than the plane abutting surface, so that better support is provided for the blade when the blade is clamped; the locking wedge block is smaller in size, and further dense tooth arrangement of the cutter disc is possible.

Optionally: the locking wedge is arranged on the cutting side of the blade.

By adopting the technical scheme, the cutter head provides a main support for the blade on the cutting back side of the blade, which is beneficial to the stability of the blade, and the locking wedge block provides an auxiliary support on the cutting side.

Optionally: the bolt is sunk into the locking wedge block, and a chip guiding cambered surface extending to the cutterhead is arranged on the upper end surface of the locking wedge block.

Through adopting above-mentioned technical scheme, the metal chip produces the cutting side of blade, sets up the chip guide cambered surface and guides the chip removal direction of metal chip, makes the metal chip discharge smoothly, avoids the metal chip to pile up influence face milling cutter cutting quality, damages the blade, and the bolt sinks to prevent to hinder the metal chip along leading the discharge of chip cambered surface in the locking voussoir, influences and leads the bits effect.

Optionally: the insert is made of cemented carbide.

By adopting the technical scheme, the cutting efficiency and the machining quality of the hard alloy face milling cutter are higher than those of the high-speed steel milling cutter, so that the face milling cutter for installing the blade made of hard alloy is widely used for machining a plane.

In summary, the present application has the following beneficial effects:

1. the main deflection angle cutting edge and the trimming auxiliary edge are respectively arranged on each side of the blade, the main deflection angle cutting edge of the outer circle of the side surface of the cutter head is used for cutting, the trimming auxiliary edge of the working surface of the cutter head is used for enabling the cutting surface to be smooth and flat like a scraper, meanwhile, the cutting and trimming functions are met, two types of blades are not required to be respectively arranged, and the installation of the blades is simplified;

2. the blade is tightly pressed in the fixing groove through the locking wedge block, so that the blade is quickly positioned, compared with a screw fixing mode penetrating through the blade, the locking wedge block needs to occupy smaller space of the cutter head, more blades can be arranged on the cutter head, the cutting efficiency of the face milling cutter is improved, and the strength of the blade is not influenced by punching on the blade;

3. the convex edges on the side surfaces of the blades guide the installation direction, the blades can be fixed and normally used no matter the blades are turned left and right and turned upside down, the installation is simple and convenient, errors can be avoided, the blades can be rapidly positioned, and the installation and adjustment of the blades are simplified;

4. the avoidance groove and the chip guiding cambered surface provide protection for the blade, and the service life of the blade is prolonged.

Drawings

FIG. 1 is a schematic overall structure of an embodiment;

FIG. 2 is a working face view of an embodiment showing the mounting arrangement of the blades;

fig. 3 is an exploded view of a partial view of an embodiment showing the positional relationship and specific configuration of the blade and locking wedge.

In the figure, 10, a cutter head; 11. a fixing groove; 12. an avoidance groove; 20. a blade; 21. a main deflection angle cutting edge; 22. polishing the auxiliary blade; 23. a rib; 30. locking the wedge block; 31. a bolt; 32. and a chip guiding cambered surface.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

In the description of the present application, it should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

In the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as examples, illustrations, or descriptions. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

Examples: a face milling cutter, as shown in fig. 1, includes a cutterhead 10 and a plurality of blades 20 made of cemented carbide material.

The cutter head 10 is in a cylindrical shape or a hollow round table shape, the horn-shaped cutter head 10 in the drawings is taken as an example in the embodiment, the upper part of the cutter head 10 is a fixing part connected with a milling machine, the side surface of the lower part of the cutter head 10 is a cutting surface, and the bottom surface is a polishing surface.

Referring to fig. 2, a plurality of fixing grooves 11 are formed in the cutter head 10 at equal intervals along the circumferential direction, and the fixing grooves 11 are communicated with the cutting surface and the finishing surface. The exemplary embodiment is described with respect to cutting by rotating the face milling cutter counter-clockwise in fig. 2.

Referring to fig. 3, a locking wedge 30 is disposed in a fixing groove 11, the locking wedge 30 is formed by a plane inclined in half toward the bottom of the fixing groove 11 and a half cylinder, the locking wedge 30 is connected to the fixing groove 11 by a bolt 31 disposed along the radial direction of the cutterhead 10, the locking wedge 30 can move up and down in the fixing groove 11 along with the bolt 31, one side of the half cylinder of the locking wedge 30 abuts against the fixing groove 11, the fixing groove 11 and the inclined plane of the locking wedge 30 are disposed at intervals, the opposite plane is also a plane inclined toward the bottom of the fixing groove 11, and the two inclined planes are jointly abutted against and fixed with the blade 20.

The blade 20 is exemplified by a flat hexahedron, wherein two surfaces with larger cross sections are abutting surfaces, a convex rib 23 is arranged in the center of each abutting surface, a main deflection angle cutting edge 21 is arranged on a side edge of each abutting surface, which is parallel to the arrangement direction of the convex rib 23, and the edge length is larger than the depth of the fixing groove 11; the edge perpendicular to the direction in which the rib 23 is provided with a wiper edge 22, and the edge length is longer than the depth of the fixing groove 11.

When the blade 20 is fixed in the fixing groove 11, the two inclined planes of the fixing groove 11 and the locking wedge 30 respectively abut against the two ribs 23.

The fixing groove 11 is provided with a cylindrical avoiding groove 12 at the corner abutting against the blade 20.

The upper end surface of the locking wedge 30 is provided with an inwardly concave chip guiding cambered surface 32, the chip guiding cambered surface 32 smoothly extends to the bottom surface and the side wall of the cutterhead 10 along the anticlockwise direction in the drawing 2, and the bolts 31 of the locking wedge 30 sink below the upper end surface of the locking wedge 30.

Working principle:

mounting blade 20: in the unscrewed state of the bolt 31, the blade 20 keeps the posture that the convex edge 23 is perpendicular to the bottom surface of the cutterhead 10, and the bottom surface of the cutterhead 10 is placed between the fixing groove 11 and the locking wedge 30. The two main deflection angle cutting edges 21 and the two trimming auxiliary edges 22 of the blade 20 in the fixed groove 11 correspond to the avoiding groove 12, so that the edge is suspended. The bolt 31 is gradually screwed, the locking wedge 30 moves toward the inside of the fixing groove 11 along with the bolt 31, the locking wedge 30 having a wide upper part and a narrow lower part presses the blade 20 accordingly, and the blade 20 is fixed to the bottom of the fixing groove 11 by the abutment rib 23. At this time, the end surface provided with the main cutting edge 21 is perpendicular to the working surface of the cutterhead 10 and protrudes from the side surface of the cutterhead 10, and the end surface provided with the wiper secondary edge 22 is parallel to the working surface of the cutterhead 10 and protrudes from the working surface of the cutterhead 10. The three sides of the blade 20 are abutted with the fixing groove 11, and one side is abutted with the locking wedge block 30, so that quick positioning and installation are realized.

The hexahedral symmetry of the blade 20 sets the fixing groove 11 to be a plane inclined toward the bottom of the fixing groove 11 with respect to the plane of the locking wedge 30 as well, so that the blade 20 can be properly abutted regardless of the left-right-reversed and upside-down reversed ribs 23 to fix the blade 20 in the fixing groove 11.

When cutting operation is performed: the cutterhead 10 rotates at a high speed along with the milling machine in the anticlockwise direction in fig. 2, and the blades 20 on the edge of the cutterhead 10 generate centrifugal force outwards along the radial direction of the cutterhead 10, and the inclined surface is further abutted against the convex edges 23 in the opposite direction to the direction of the downward pressure of the locking wedge 30 on the blades 20. The main deflection angle cutting edge 21 protrudes out of the excircle of the side surface of the cutterhead 10 for cutting, and the polishing auxiliary edge 22 protrudes out of the working surface of the cutterhead 10, so that the cutting surface is smooth and flat like a scraper. The cut metal chips are discharged along the chip guiding cambered surface 32.

The embodiments of the present utility model are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in this way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The utility model provides a face milling cutter, includes blade disc (10) and a plurality of blade (20), the side of blade disc (10) is equipped with a plurality of fixed slots (11), characterized by: each fixing groove (11) is provided with a locking wedge block (30), each blade (20) corresponds to each fixing groove (11) one by one, and the locking wedge blocks (30) clamp the blades (20) in the fixing grooves (11);

the blades (20) are respectively provided with a main deflection angle cutting edge (21) and a polishing auxiliary edge (22) which are perpendicular to each other, the main deflection angle cutting edge (21) is perpendicular to the working surface of the cutterhead (10) and protrudes out of the side surface of the cutterhead (10), and the polishing auxiliary edge (22) is parallel to the working surface of the cutterhead (10) and protrudes out of the working surface of the cutterhead (10).

2. The face milling cutter according to claim 1, wherein: one side of the locking wedge block (30) abutting against the blade (20) is inclined towards the axial direction of the cutter head (10), and the locking wedge block (30) is fixed by a bolt (31) penetrating along the radial direction of the cutter head (10); one side of the blade (20) abutting against the locking wedge (30) is provided with a convex edge (23) parallel to the main deflection angle cutting edge (21).

3. The face milling cutter according to claim 2, wherein: the blade (20) is hexahedral in shape, two opposite faces of the blade (20) are provided with the convex rib (23), and the convex rib (23) is arranged in the middle;

the edges of the blade (20) parallel to the convex rib (23) are provided with the main deflection angle cutting edge (21) and the edges perpendicular to the convex rib (23) in the same plane are provided with the trimming auxiliary edge (22);

one side of the fixing groove (11) abutting against the blade (20) is provided with the convex edge (23) and is inclined to the axial direction of the cutter head (10).

4. A face milling cutter according to claim 3, wherein: and an avoidance groove (12) is formed at the corner of the fixing groove (11) abutting against the blade (20).

5. The face milling cutter according to claim 1, wherein: the abutting surface of the locking wedge block (30) and the fixing groove (11) is a semicircular arc surface.

6. The face milling cutter according to claim 1, wherein: the locking wedge (30) is disposed on the cutting side of the blade (20).

7. The face milling cutter according to claim 6, wherein: the bolt (31) is sunk into the locking wedge block (30), and a chip guiding cambered surface (32) extending to the cutterhead (10) is arranged on the upper end surface of the locking wedge block (30).

8. The face milling cutter according to claim 1, wherein: the insert (20) is made of cemented carbide.