CN213350974U

CN213350974U - Anti-cracking milling cutter head

Info

Publication number: CN213350974U
Application number: CN202022445658.7U
Authority: CN
Inventors: 侯霄寒; 陈勇
Original assignee: Chengdu Hangwei Precision Cutting Co ltd
Current assignee: Chengdu Hangwei Precision Cutting Co ltd
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2021-06-04
Anticipated expiration: 2030-10-28

Abstract

The utility model discloses an anti-cracking milling cutter head, including the button head, be equipped with the double knives cutting edge on the terminal surface of button head, the double knives cutting edge includes first cutting edge and second cutting edge, and first cutting edge and second cutting edge imbed in the button head and with button head fixed connection, first cutting edge and second cutting edge are symmetrical about the centre of a circle of button head and set up and first cutting edge and second cutting edge are identical, are equipped with the fixed rod group in the button head side, the fixed rod group runs through the button head and runs through the part that first cutting edge and second cutting edge imbed in the button head, the fixed rod group is fixed with the button head; by means of the separate double-edged cutting edges, the shear stress on the cutting edge is weakened when the cutting edge is rotated, so that the risk of the cutting edge of the milling cutter head breaking is reduced.

Description

Anti-cracking milling cutter head

Technical Field

The utility model relates to a milling cutter tool field specifically is a crack control milling cutter tool bit.

Background

A conventionally known milling cutter is a tool which is mounted on a milling machine or a machine tool and processes a workpiece by bringing a tip end portion, on which a cutting edge is formed, into contact with the workpiece and moving the workpiece in a direction substantially perpendicular to a rotation axis while rotating the workpiece.

The milling cutters in the prior art are classified into various types, namely, an integrated milling cutter design and a non-integrated milling cutter design, and the milling cutter in the non-integrated milling cutter design is divided into a cutter head and a cutting edge, and the fixing mode of the milling cutter is generally welding and fixing. The resultant forces of the forces acting on the substitute workpiece by the milling cutter are equal in magnitude and opposite in direction, and the acting lines are close to each other to form a transverse concentrated force. Since the substitute workpiece also exerts an equivalent force on the milling cutter, the cutting edge of the milling cutter is subjected to such an external force, and the cross section between the forces is defined as a boundary line, and this deformation form of the milling cutter is called shear, and the cross section is a shear plane. Shearing force on the shear plane can break the milling cutter cutting edge, not only has the risk of injury machine after the milling cutter cutting edge breaks, but also has the risk of injury staff, so should avoid shear stress's destruction in the milling cutter course as far as possible to protect the milling cutter cutting edge, so how guarantee the milling cutter cutting edge in the course of the work not destroyed by shear stress just become the problem that the milling cutter tool bit field is urgent to be solved as far as possible.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome thereby prior art milling cutter cutting edge is easy to be cut when rotatory in the course of the work and is taken place the cracked not enough of cutting edge, provides a crack control milling cutter tool bit, through the double knives cutting edge of separation, weakens the shearing stress on the cutting edge when the cutting edge is rotatory to reduce the cracked risk of cutting edge of milling cutter tool bit.

The purpose of the utility model is mainly realized through the following technical scheme:

the utility model provides an anti-cracking milling cutter tool bit, includes the button head, is equipped with the double knives cutting edge on the terminal surface of button head, the double knives cutting edge includes first cutting edge and second cutting edge, in first cutting edge and the second cutting edge embedding button head and with button head fixed connection, first cutting edge and second cutting edge set up and first cutting edge and second cutting edge identical about the centre of a circle symmetry of button head, are equipped with fixed rod group to the side of the button head, fixed rod group runs through the button head and runs through the part in first cutting edge and the second cutting edge embedding button head, fixed rod group is fixed with the button head.

The milling cutter in the prior art is generally a single-blade milling cutter, during the operation, because the rotation of the milling cutter is performed around the center of the cutter head, during the operation of the milling cutter, collision and friction are generated between the milling cutter blade and a workpiece, and the blocking of the rotation of the milling cutter blade by the workpiece can effectively strengthen the shearing stress of the milling cutter blade, under the continuous action of the shearing stress of the milling cutter blade, the milling cutter blade can be broken, and the broken milling cutter blade can generate great harm, which can not only hurt the machine and cause the machine to be damaged, but also because the milling cutter is in high-speed rotation, broken debris can be thrown out along with the milling cutter rotating at high speed, irrecoverable loss can be caused in serious cases, and in order to avoid the loss of life and property safety, the improvement of the milling cutter becomes urgent and the milling cutter can be broken, closely related to the arrangement of the single-cutter cutting edge, when the cutting edge of the milling cutter is the single-cutter cutting edge, in order to enable the processing effect to be uniform and easier to control, the single-cutter cutting edge is pulled through the cutter head, so that the end parts of the two ends of the single-cutter cutting edge are stressed, and the middle part is not stressed or is stressed less, so that the cutting edge is always in a broken state, and the cutting edge is relatively longer, so that the shearing stress of the middle part is strengthened, and when the shearing stress acts on the cutting edge of the milling cutter and works for a long time, the breaking probability of the cutting edge is greatly increased; the utility model effectively disperses shearing stress by splitting the single knife edge into the double knife edges, and the first knife edge and the second knife edge are embedded into the round head and fixedly connected with the round head, the first knife edge and the second knife edge are symmetrically arranged about the circle center of the round head and are completely the same, so that the first knife edge and the second knife edge can both receive single-direction external force action, the action of shearing stress is greatly reduced, the embedded knife edge can increase the stress area, the knife edge can only deform and not break or break when receiving excessive external force, and the mode of limiting the first knife edge and the second knife edge by adopting the transverse of the fixed rod group can also enable the whole knife head to be transmitted in the hand of the first knife edge and the second knife edge, thereby reducing the probability that the knife edge is damaged, the utility model discloses a double knife edge setting and a separated double knife edge, the shear stress on the edge is reduced when the edge is rotated, thereby reducing the risk of breaking the edge of the milling cutter head.

Further, the fixed rod group comprises a plurality of first horizontal inserted rods, the first horizontal inserted rods are evenly distributed on the same horizontal plane and are parallel to each other, two ends of each first horizontal inserted rod are fixed with the round heads respectively, a plurality of second horizontal inserted rods are arranged above the first horizontal inserted rods, the second horizontal inserted rods are evenly distributed on the same horizontal plane and are parallel to each other, and two ends of each second horizontal inserted rod are fixed with the round heads respectively. The utility model provides a fixed rod group includes the horizontal inserted bar of a plurality of first horizontal inserted bars and a plurality of second, and the setting of two upper and lower rows of horizontal inserted bars makes the fixed of the embedding part of dead lever group cutting edge more stable, and the power that receives also by two parts homodisperse, and power after the dispersion can not produce fracture risk to the cutting edge, and the embedded setting of first cutting edge and second cutting edge also can make the atress of cutting edge become the face transmission from the point transmission, thereby makes the cutting edge be difficult to the fracture more the utility model discloses in first horizontal inserted bar and the horizontal inserted bar of second through the double-deck arrangement, can be effectual with cutting edge atress dispersion and transmit whole tool bit on, thereby reduce the cracked risk of cutting edge.

Further, the first cutting edge and the second cutting edge are rectangular cutting edges, and the rectangular opposite corners of the first cutting edge and the second cutting edge are contacted. The utility model provides a rectangular knife edge can effectually process the each direction to the rectangle diagonal angle department contact of first cutting edge and second cutting edge makes and does not connect between the cutting edge, thereby has reduced its cracked risk, and the rectangular knife edge processing degree of difficulty is little, can replace at any time when needs, and the cutting edge of easy replacement makes the cutting edge fracture risk further reduce.

Further, the first and second edges are triangular edges, the triangle of the triangular edges is a right triangle, and the triangles of the first and second edges meet at an acute angle. The utility model provides a triangle-shaped cutting edge can be with the help of the stable structure of triangle-shaped, and the effectual first cutting edge of making and second cutting edge carry out work under the state that keeps stable in structure to can resist the effect of external force more.

Further, first cutting edge and second cutting edge are trapezoidal cutting edge, and the trapezoidal of trapezoidal cutting edge is right trapezoid to the hypotenuse part coincidence of first cutting edge and second cutting edge. The utility model discloses a trapezoidal cutting edge to when first cutting edge and the trapezoidal hypotenuse part of second cutting edge coincide, can increase the effect that supports mutually between two cutting edges, thereby make milling cutter can process the material of stereoplasm more, and adopt trapezoidal as the cutting edge, can make processing more even, the processing effect is close the rectangular cutting edge, the utility model discloses a setting of trapezoidal cutting edge, the processing ability of effectual reinforcing cutting edge is and also make the utility model discloses can effectually prevent the cutting edge fracture of tool bit.

Furthermore, the acute angle of the bottom angle of the trapezoidal blade is 55-75 degrees. The utility model discloses in, the acute angle through restricting trapezoidal cutting edge base angle is 55 ~ 75 and restricts trapezoidal all angular angle scope, because the utility model discloses a be right trapezoid, so trapezoidal all angular angle scope homoenergetic can be confirmed, and 55 ~ 75 base angle scope can make the hypotenuse of two trapezoidal cutting edges support mutually and do not take place relative displacement effectively, thereby also avoided two trapezoidal cutting edges too strong antagonism of each other to cause the destruction of cutting edge simultaneously, the utility model discloses a setting of base angle has avoided trapezoidal cutting edge to be in the scope that can not support each other and take place excessive antagonism effectively, thereby has improved the utility model discloses a tool bit crack control ability.

To sum up, compared with the prior art, the utility model has the following beneficial effects:

(1) the utility model discloses an adopt the setting of double knives cutting edge to through the double knives cutting edge of separation, weaken the shear stress on the cutting edge when the cutting edge is rotatory, thereby reduce the cracked risk of cutting edge of milling cutter tool bit.

(2) The utility model discloses in through the horizontal inserted bar of the first horizontal inserted bar and the horizontal inserted bar of second of double-deck arrangement, can be effectual with cutting edge atress dispersion and transmit on whole tool bit to reduce the cracked risk of cutting edge.

(3) The utility model discloses a setting of trapezoidal cutting edge, the throughput of effectual reinforcing cutting edge is and also make the utility model discloses can effectually prevent the cutting edge fracture of tool bit to through the setting of base angle, avoided the trapezoidal cutting edge to be in can not support mutually and take place the within range of excessive confrontation effectively, thereby improved the utility model discloses a tool bit crack control ability.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic structural view of an embodiment of the rectangular blade of the present invention;

FIG. 2 is a schematic structural view of an embodiment of the triangular blade of the present invention;

FIG. 3 is a schematic structural view of an embodiment of the trapezoidal blade of the present invention;

FIG. 4 is a front cross-sectional view of the present invention;

the names corresponding to the reference numerals are: 1-round head, 2-double knife edge, 21-first knife edge, 22-second knife edge, 3-fixed rod group, 31-first transverse inserted rod, 32-second transverse inserted rod, 4-rectangular knife edge, 5-triangular knife edge and 6-trapezoidal knife edge.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

Example 1:

as shown in fig. 1 and 4, the present embodiment relates to an anti-cracking milling cutter head, which includes a round head 1, wherein a double-blade 2 is arranged on an end surface of the round head 1, the double-blade 2 includes a first blade 21 and a second blade 22, the first blade 21 and the second blade 22 are embedded in the round head 1 and fixedly connected with the round head 1, the first blade 21 and the second blade 22 are symmetrically arranged about a center of the round head 1, the first blade 21 and the second blade 22 are completely identical, a fixing rod group 3 is arranged on a side surface of the round head 1, the fixing rod group 3 penetrates through the round head 1 and penetrates through a portion of the first blade 21 and the second blade 22 embedded in the round head 1, and the fixing rod group 3 is fixed with the round head 1; the fixed rod group 3 comprises a plurality of first horizontal insertion rods 31, the first horizontal insertion rods 31 are evenly distributed on the same horizontal plane and are parallel to each other, the two ends of the first horizontal insertion rods 31 are respectively fixed with the round heads 1, a plurality of second horizontal insertion rods 32 are arranged above the first horizontal insertion rods 31, the second horizontal insertion rods 32 are evenly distributed on the same horizontal plane and are parallel to each other, and the two ends of the second horizontal insertion rods 32 are respectively fixed with the round heads 1.

Double-edged knife 2 on button head 1 in this embodiment not only adopts embedded installation, also simultaneously with button head 1 welded fastening, on dual fixed basis, the stability of reinforcing cutting edge to the effectual external force that receives of sharing all directions.

Example 2:

as shown in fig. 1 and 4, the first blade 21 and the second blade 22 of the present embodiment are rectangular blades 4, and the rectangular opposite corners of the first blade 21 and the second blade 22 are in contact with each other. Rectangular cutting edge 4 in this embodiment can be effectual processes the each direction to the rectangle diagonal angle department contact of first cutting edge 21 and second cutting edge 22 makes and does not connect between the cutting edge, thereby has reduced its cracked risk, and rectangular cutting edge 4 processing degree of difficulty is little, can replace at any time when needing, and the cutting edge of easy replacement makes the cutting edge fracture risk further reduce.

Example 3:

as shown in fig. 2 and 4, the first blade 21 and the second blade 22 of the present embodiment are triangular blades 5, the triangle of the triangular blades 5 is a right triangle, and the triangles of the first blade 21 and the second blade 22 are in contact at an acute angle. The triangular blade 5 in the present embodiment can effectively make the first blade 21 and the second blade operate in a state where the structure is stable at 22 by virtue of the structure of the triangular stability, and can resist the action of external force more.

Example 4:

as shown in fig. 3 and 4, in the present embodiment, the first blade 21 and the second blade 22 are trapezoidal blades 6, the trapezoid of the trapezoidal blade 6 is a right-angle trapezoid, and the hypotenuse portions of the trapezoids of the first blade 21 and the second blade 22 are overlapped; the acute angle of the bottom angle of the trapezoidal blade 6 is 55-75 degrees.

The base angle in this embodiment sets up to 67.6, is adopting trapezoidal cutting edge 6, and when the trapezoidal hypotenuse part of first cutting edge 21 and second cutting edge 22 was coincide, can increase the effect that supports each other between two cutting edges, thereby make milling cutter can process harder material, and adopt trapezoidal as the cutting edge, can make processing more even, the processing effect is close rectangular cutting edge, and the setting of trapezoidal cutting edge is passed through to this embodiment, the effectual processing ability who strengthens the cutting edge is and also make the utility model discloses can effectually prevent the cutting edge fracture of tool bit, when adopting 67.6 as the base angle, two cutting edges can form effective support and do not have the emergence of excessive antagonism, make the processing effect and the tool bit crack control effect of this embodiment all reach best.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides an anti-cracking milling cutter head, its characterized in that includes button head (1), is equipped with double knives cutting edge (2) on the terminal surface of button head (1), double knives cutting edge (2) include first cutting edge (21) and second cutting edge (22), first cutting edge (21) and second cutting edge (22) embedding in button head (1) and with button head (1) fixed connection, first cutting edge (21) and second cutting edge (22) set up and first cutting edge (21) and second cutting edge (22) are identical about the centre of a circle symmetry of button head (1), are equipped with fixed rod group (3) to the side of button head (1), fixed rod group (3) run through button head (1) and run through the part in first cutting edge (21) and second cutting edge (22) embedding button head (1), fixed rod group (3) are fixed with button head (1).

2. The anti-cracking milling cutter head as claimed in claim 1, wherein the fixed bar set (3) comprises a plurality of first horizontal inserted bars (31), the first horizontal inserted bars (31) are uniformly distributed on the same horizontal plane and parallel to each other, two ends of the first horizontal inserted bars (31) are respectively fixed with the round head (1), a plurality of second horizontal inserted bars (32) are arranged above the first horizontal inserted bars (31), the second horizontal inserted bars (32) are uniformly distributed on the same horizontal plane and parallel to each other, and two ends of the second horizontal inserted bars (32) are respectively fixed with the round head (1).

3. Anti-splitting milling cutter head according to claim 1, characterized in that the first (21) and second (22) cutting edges are rectangular cutting edges (4), the rectangular corners of the first (21) and second (22) cutting edges touching.

4. An anti-splitting milling cutter head according to claim 1, characterized in that the first (21) and second (22) edges are triangular edges (5), the triangle of the triangular edges (5) is a right triangle, and the triangles of the first (21) and second (22) edges meet at an acute angle.

5. An anti-splitting milling cutter head according to claim 1, characterized in that the first (21) and second (22) cutting edges are trapezoidal cutting edges (6), the trapezoid of the trapezoidal cutting edges (6) is a right-angled trapezoid, and the hypotenuse of the trapezium of the first (21) and second (22) cutting edges partially coincide.

6. An anti-splitting milling cutter head according to claim 5, characterized in that the acute angle of the base angle of the trapezoidal edge (6) is 55-75 °.