CN210996733U

CN210996733U - Three-side milling cutter

Info

Publication number: CN210996733U
Application number: CN201922142604.0U
Authority: CN
Inventors: 卜学军; 李朦特; 陆海涛
Original assignee: Hangzhou Chai Tools Co ltd
Current assignee: Hangzhou Chai Tools Co ltd
Priority date: 2019-12-03
Filing date: 2019-12-03
Publication date: 2020-07-14
Anticipated expiration: 2029-12-03

Abstract

The utility model relates to a three-sided milling cutter, it includes the cutter body, and the equal circumference in upper and lower surface of cutter body is equipped with a plurality of first sword grooves and second sword groove, and all first sword inslots all are equipped with first blade, and all second sword inslots all are equipped with the second blade. In the process that the cutter body rotates to mill a workpiece, a first straight groove is milled on the workpiece by a first blade positioned on the upper surface and a second straight groove is milled on the workpiece by a second blade positioned on the upper surface and the lower surface of the cutter body; the tool tips of all the second blades protrude out of the first blades on the same plane, so that the groove width of the second straight groove is larger than that of the first straight groove, and the first straight groove and the second straight groove form a stepped groove; this trilateral milling cutter can once only accomplish the processing in ladder groove. The utility model discloses the machining efficiency in notch cuttype groove can be improved.

Description

Three-side milling cutter

Technical Field

The utility model belongs to the technical field of milling cutter's technique and specifically relates to a trilateral milling cutter is related to.

Background

The three-edge milling cutter is called a three-edge milling cutter for short, three cutting edges are provided with relief angles, the cutting edges are sharp, and the cutting is light and fast. Face mills are standard machine tools, typically used on milling machines, and are typically used for milling grooves and steps.

Through retrieval, chinese patent publication No. CN2818028Y discloses a face and side milling cutter, which comprises a key groove, an inner hole, a cutter body and cutting edges, wherein the cutting edges are three-sided opening cutting edges welded together with the cutter body in an inlaying manner, the number of the cutting edges is 14-40, and the cutting edges are uniformly inlaid on the periphery of the cutter body at intervals. The utility model has the advantages that: simple structure, convenient to use, furthest's reduction in cost on the basis of guaranteeing the precision.

The above prior art solutions have the following drawbacks: such a three-edge milling cutter is generally used for directly machining straight grooves, and if a step groove is to be machined, the three-edge milling cutter needs to perform a plurality of feeding and milling operations, which results in low work efficiency, and thus needs to be improved.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a trilateral milling cutter has improved the machining efficiency in notch cuttype groove.

The above object of the present invention can be achieved by the following technical solutions: the utility model provides a three-sided milling cutter, includes the cutter body, the equal circumference in upper and lower surface of cutter body is equipped with a plurality of first sword grooves and second sword groove, all first sword grooves all run through in the lateral wall of cutter body, and all first sword inslots all are equipped with first blade, the knife tip of all first blade all outstanding in cutter body surface and cutter body lateral wall, all second sword inslots all are equipped with the second blade, the knife tip of all second blades all outstanding in the second sword groove that corresponds and the first blade on the coplanar, interval between first blade and the cutter body center is greater than the interval between second blade and the cutter body center.

By adopting the technical scheme, in the process that the cutter body rotates to mill the workpiece, the first straight groove is milled on the workpiece by the first blades positioned on the upper surface and the lower surface of the cutter body, and the second straight groove is milled on the workpiece by the second blades positioned on the upper surface and the lower surface of the cutter body; the tool tips of all the second blades protrude out of the first blades on the same plane, so that the groove width of the second straight groove is larger than that of the first straight groove, and the first straight groove and the second straight groove form a stepped groove; this trilateral milling cutter can once only accomplish the processing in ladder groove, has improved the machining efficiency in ladder groove.

The present invention may be further configured in a preferred embodiment as: the cutter body is characterized in that a plurality of third cutter grooves are circumferentially formed in the upper surface and the lower surface of the cutter body, third blades are arranged in all the third cutter grooves, cutter points of all the third blades protrude out of the corresponding third cutter grooves and the second blades on the same plane, and the distance between each second blade and the center of the cutter body is larger than the distance between each third blade and the center of the cutter body.

Through adopting above-mentioned technical scheme, the third straight flute will be milled out on the work piece to the third blade that is located cutter body upper and lower surface, and the groove width of third straight flute is greater than the groove width of second straight flute, so this trilateral milling cutter can mill out two steps simultaneously, and the suitability is strong.

The present invention may be further configured in a preferred embodiment as: all the first blades are locked and fixed in the corresponding first knife grooves through first bolts.

By adopting the technical scheme, the first blade can be conveniently detached and replaced.

The present invention may be further configured in a preferred embodiment as: the surfaces of all the first blades are provided with limiting blocks, and the groove walls of all the first cutter grooves are provided with limiting grooves for the corresponding limiting blocks to be embedded in a sliding mode.

Through adopting above-mentioned technical scheme, the stopper inlays and establishes at the spacing inslot for first blade is difficult for rocking, has improved the stability of first blade.

The utility model discloses in a preferred example can further be configured that the stopper all is equipped with two sets of and separately locates the diagonal angle department of first blade on every first blade, and all stoppers all are "L" shape setting.

Through adopting above-mentioned technical scheme, the cooperation of stopper and spacing groove has realized spacing to four directions of first blade, has improved the stability of first blade.

The present invention may be further configured in a preferred embodiment as: all first bolts all include the first nut that compresses tightly in first blade and wear to locate first blade and the first screw rod of screw-thread fit in the cutter body, and all stoppers all locate first blade and deviate from on the one side that corresponds first nut surface, all be equipped with towards corresponding first screw rod on the relative lateral wall of two sets of stoppers of first blade keep away from the pressing surface in the slope of first nut one end, all be equipped with two sets of fitting surfaces that laminate respectively in corresponding pressing surface on the cell wall in all first sword grooves.

Through adopting above-mentioned technical scheme, when screwing up first bolt, two sets of stoppers will all inlay and establish at the spacing inslot that corresponds, and two sets of faces that compress tightly will all compress tightly in the fitting surface that corresponds, have further improved the stability of first blade.

The present invention may be further configured in a preferred embodiment as: all the second blades are locked and fixed in the corresponding second knife grooves through second bolts.

Through adopting above-mentioned technical scheme, the dismantlement of the second blade of being convenient for is changed.

The present invention may be further configured in a preferred embodiment as: all the second bolts all include the second nut that compresses tightly in the second blade and wear to locate second blade and screw-thread fit in the second screw rod of cutter body, and all second blades all are equipped with the joint groove on deviating from one side corresponding the second nut surface, all are equipped with the joint spare of joint in corresponding the joint inslot on the cell wall in all second sword grooves.

Through adopting above-mentioned technical scheme, after screwing up the second bolt, joint spare will be in the joint inslot for the second blade only can follow the second screw rod extending direction and slide just can break away from in the second sword groove, has improved the stability of second blade.

The present invention may be further configured in a preferred embodiment as: and a plurality of chip grooves corresponding to the second blades are circumferentially arranged on the upper surface and the lower surface of the cutter body.

By adopting the technical scheme, the second blade can conveniently mill the workpiece, and the generated scraps can be discharged.

To sum up, the utility model discloses a following beneficial technological effect:

1. the arrangement of the first blade and the second blade can finish the processing of the stepped groove at one time, so that the processing efficiency of the stepped groove is improved;

2. the arrangement of the third blade ensures that the three-side milling cutter can mill two steps at the same time, and the applicability is strong;

3. the stability of first blade and second blade has been improved to the setting of first bolt, stopper, second bolt and joint spare.

Drawings

Fig. 1 is a schematic front view of the whole structure in the embodiment of the present invention;

FIG. 2 is a schematic view of an overall reverse explosion structure in an embodiment of the present invention;

fig. 3 is an exploded view illustrating a first blade groove and a first blade in an embodiment of the present invention;

FIG. 4 is a schematic structural view illustrating a first pocket and a first blade in an embodiment of the present invention;

fig. 5 is an exploded view illustrating the second pocket and the second blade according to the embodiment of the present invention.

Reference numerals: 1. a cutter body; 11. a first knife slot; 12. a second knife slot; 13. a third knife slot; 14. a chip groove; 15. a protective groove; 2. a first blade; 21. a first bolt; 211. a first nut; 212. a first screw; 22. a limiting block; 23. a limiting groove; 24. a compression surface; 25. a mating surface; 3. a second blade; 31. a second bolt; 311. a second nut; 312. a second screw; 32. a clamping groove; 33. a clamping piece; 331. a circular ring; 332. a clamping block; 4. a third blade; 41. and a third bolt.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, a three-sided milling cutter includes a cutter body 1, wherein a plurality of first cutter grooves 11, second cutter grooves 12 and third cutter grooves 13 are circumferentially arranged on the upper and lower surfaces of the cutter body 1; all the first cutter grooves 11 penetrate through the side wall of the cutter body 1, the first blades 2 are arranged in all the first cutter grooves 11, and cutter points of all the first blades 2 protrude out of the surface of the cutter body 1 and the side wall of the cutter body 1.

As shown in fig. 1 and 2, the second blades 3 are arranged in all the second cutter grooves 12, the tips of all the second blades 3 protrude out of the corresponding second cutter grooves 12 and the first blades 2 on the same plane, and the distance between the first blades 2 and the center of the cutter body 1 is larger than the distance between the second blades 3 and the center of the cutter body 1.

As shown in fig. 1 and 2, the third blade 4 is disposed in all the third blade grooves 13, the tips of all the third blades 4 protrude from the corresponding third blade grooves 13 and the second blade 3 on the same plane, and the distance between the second blade 3 and the center of the cutter body 1 is greater than the distance between the third blade 4 and the center of the cutter body 1. At the in-process that cutter body 1 rotation milled the work piece, first blade 2 will mill out first straight flute on the work piece, second blade 3 will mill out the second straight flute on the work piece, third blade 4 will mill out the third straight flute on the work piece, the groove width of third straight flute is greater than the groove width of second straight flute, the groove width of second straight flute will be greater than the groove width of first straight flute, so this three-sided milling cutter can mill out two steps simultaneously, the suitability is strong, and the machining efficiency in ladder groove has been improved.

As shown in fig. 1 and 2, all the first blades 2 are locked in the corresponding first pockets 11 by the first bolts 21, all the second blades 3 are locked in the corresponding second pockets 12 by the second bolts 31, and all the third blades 4 are locked in the corresponding third pockets 13 by the third bolts 41, so that the first blades 2, the second blades 3, and the third blades 4 are disassembled and replaced.

As shown in fig. 1 and 2, a plurality of chip discharge grooves 14 corresponding to the second blade 3 and the third blade 4 and a protection groove 15 corresponding to the first blade 2 and communicated with the first blade groove 11 are circumferentially arranged on the upper surface and the lower surface of the cutter body 1, the chip discharge grooves 14 facilitate discharge of waste chips generated when the second blade 3 and the third blade 4 mill a workpiece, and the protection groove 15 prevents the corners of the first blade 2 from breaking.

As shown in fig. 3 and 4, all the first bolts 21 include first nuts 211 and first screws 212, all the first nuts 211 are pressed against the corresponding first blades 2, all the first screws 212 are inserted into the corresponding first blades 2 and are in threaded fit with the cutter body 1, two sets of limit blocks 22 are integrally formed on one sides of the first blades 2 departing from the surfaces of the corresponding first nuts 211, the two sets of limit blocks 22 on each first blade 2 are arranged in an L shape and are respectively arranged at opposite corners of the first blades 2, two sets of limit grooves 23 are arranged on the groove walls of all the first blades 11, and all the limit blocks 22 are embedded in the corresponding limit grooves 23, so that the stability of the first blades 2 is improved.

As shown in fig. 3 and 4, the side walls of the two sets of stoppers 22 of all the first blades 2 opposite to each other are provided with pressing surfaces 24 inclined toward the ends of the corresponding first screws 212 far away from the first nuts 211, and the walls of all the first slots 11 are provided with two sets of matching surfaces 25 respectively attached to the corresponding pressing surfaces 24. When the first bolt 21 is screwed down, the two groups of limiting blocks 22 are embedded in the corresponding limiting grooves 23, and the two groups of pressing surfaces 24 are pressed against the corresponding matching surfaces 25, so that the stability of the first blade 2 is further improved.

As shown in fig. 5, all the second bolts 31 include second nuts 311 and second screws 312, all the second nuts 311 are pressed against the corresponding second blades 3, and all the second screws 312 are inserted through the corresponding second blades 3 and are in threaded fit with the corresponding cutter bodies 1; all the second blades 3 are provided with clamping grooves 32 on the side deviating from the surface corresponding to the second screw cap 311, and all the second knife grooves 12 are provided with clamping pieces 33 on the groove walls.

As shown in fig. 5, all the clamping members 33 include a circular ring 331 integrally formed on the groove wall of the corresponding clamping groove 32 and two sets of clamping blocks 332 integrally formed on the outer wall of the circular ring 331 in the circumferential direction, and all the second threaded rods 312 pass through the corresponding circular ring 331. After the second bolt 31 is tightened, the ring 331 and the two sets of clamping blocks 332 are clamped in the clamping grooves 32, so that the second blade 3 can only slide along the extending direction of the second screw 312 and can be separated from the second knife groove 12, and the stability of the second blade 3 is improved.

As shown in fig. 2, the groove wall of the third blade groove 13 is also provided with a clamping member 33, the surface of the third blade 4 is also provided with a clamping groove 32 (not shown in the figure), and the connection relationship between the third blade 4 and the third blade groove 13 is the same as the connection relationship between the second blade 3 and the second blade groove 12, so that the details are not repeated herein.

The implementation principle of the embodiment is as follows: at the in-process that cutter body 1 rotation milled the work piece, first blade 2 will mill out first straight flute on the work piece, second blade 3 will mill out the second straight flute on the work piece, third blade 4 will mill out the third straight flute on the work piece, the groove width of third straight flute is greater than the groove width of second straight flute, the groove width of second straight flute will be greater than the groove width of first straight flute, so this three-sided milling cutter can mill out two steps simultaneously, the suitability is strong, and the machining efficiency in ladder groove has been improved.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A three-sided milling cutter characterized in that: including cutter body (1), the equal circumference in upper and lower surface of cutter body (1) is equipped with a plurality of first sword grooves (11) and second sword groove (12), all first sword grooves (11) all run through in the lateral wall of cutter body (1), and all first sword grooves (11) are interior all to be equipped with first blade (2), the knife tip of all first blade (2) all outstanding in cutter body (1) surface and cutter body (1) lateral wall, all second sword grooves (12) are interior all to be equipped with second blade (3), the knife tip of all second blade (3) all outstanding in first blade (2) on corresponding second sword groove (12) and coplanar, the interval between first blade (2) and cutter body (1) center is greater than the interval between second blade (3) and cutter body (1) center.

2. A three-sided milling cutter according to claim 1, characterized in that: the cutter comprises a cutter body (1), wherein a plurality of third cutter grooves (13) are circumferentially arranged on the upper surface and the lower surface of the cutter body (1), third blades (4) are arranged in all the third cutter grooves (13), cutter points of all the third blades (4) protrude out of the corresponding third cutter grooves (13) and the second blades (3) on the same plane, and the distance between each second blade (3) and the center of the cutter body (1) is larger than the distance between each third blade (4) and the center of the cutter body (1).

3. A three-sided milling cutter according to claim 1, characterized in that: all the first inserts (2) are locked and fixed in the corresponding first knife grooves (11) through first bolts (21).

4. A three-sided milling cutter according to claim 3, characterized in that: the surfaces of all the first blades (2) are provided with limiting blocks (22), and the groove walls of all the first cutter grooves (11) are provided with limiting grooves (23) for the corresponding limiting blocks (22) to be embedded in a sliding mode.

5. The three-sided milling cutter according to claim 4, characterized in that the stop blocks (22) are provided in two groups on each first insert (2) and in diagonal positions of the first insert (2), all the stop blocks (22) being provided in the shape of L ".

6. A three-sided milling cutter according to claim 5, characterized in that: all first bolt (21) all including compress tightly in first nut (211) of first blade (2) and wear to locate first blade (2) and screw-thread fit first screw rod (212) in cutter body (1), all stopper (22) are all located first blade (2) and are deviated from on the one side that corresponds first nut (211) surface, all be equipped with on the relative lateral wall of two sets of stopper (22) of first blade (2) and keep away from compressing tightly face (24) in first nut (211) one end slope towards corresponding first screw rod (212), all be equipped with two sets of matching surface (25) that laminate respectively in corresponding compressing tightly face (24) on the cell wall of all first sword groove (11).

7. A three-sided milling cutter according to claim 1, characterized in that: all the second blades (3) are locked and fixed in the corresponding second knife grooves (12) through second bolts (31).

8. A three-sided milling cutter according to claim 7, characterized in that: all second bolt (31) all including compress tightly in second nut (311) of second blade (3) and wear to locate second blade (3) and screw-thread fit in second screw rod (312) of cutter body (1), all second blade (3) deviate from and all are equipped with joint groove (32) on one side on corresponding second nut (311) surface, all are equipped with joint spare (33) of joint in corresponding joint groove (32) on the cell wall of all second sword grooves (12).

9. A three-sided milling cutter according to claim 1, characterized in that: the upper surface and the lower surface of the cutter body (1) are circumferentially provided with a plurality of chip grooves (14) corresponding to the second blades (3).