CN220093162U - Face milling cutter capable of being used for machining chamfer angles of multiple specifications - Google Patents

Abstract

The utility model provides a face milling cutter capable of being used for machining multi-specification chamfers, which comprises a cutting part and a handle part connected to the upper end of the cutting part, wherein the cutting part comprises a peripheral edge and a bottom edge, the peripheral edge comprises a first chamfer edge, a second chamfer edge and a third chamfer edge which are sequentially arranged from bottom to top, the angle of a first included angle between the first chamfer edge and the central line of the cutting part is 45-60 degrees, the angle of a second included angle between the second chamfer edge and the central line is 15-30 degrees, and the angle of a third included angle between the third chamfer edge and the central line is 65-80 degrees. According to the utility model, three stepped chamfering edges are arranged on the peripheral edge, so that the chamfering at three different angles is processed, and the bottom edge has the function of plane milling, so that one cutter is multipurpose, the working efficiency is improved, and the processing cost is reduced; meanwhile, the cutting capability and strength of the chamfering edge are guaranteed by setting the relief angle of the chamfering edge, the durability of the cutter is improved, and the service life of the cutter is prolonged.

Description

Face milling cutter capable of being used for machining chamfer angles of multiple specifications

Technical Field

The utility model relates to the technical field of milling cutters, in particular to a face milling cutter capable of being used for machining chamfer angles of multiple specifications.

Background

Milling tools are rotary tools for milling machining having one or more cutter teeth. When in operation, each cutter tooth cuts off the allowance of the workpiece intermittently in sequence. Milling cutters are mainly used for machining planes, steps, grooves, forming surfaces, cutting workpieces, etc. on milling machines.

The traditional face milling cutter can only perform face cutting, has single function, can not use one cutter to finish chamfering of three different specifications, has to replace the cutter frequently in use, has low efficiency, and increases the use cost of the cutter.

Disclosure of Invention

In order to overcome the defects, the utility model provides the face milling cutter which can be used for processing the chamfer angles with multiple specifications, and can simultaneously process the chamfer angles with three different angles on the premise of having a face milling function, so that the efficiency is high, and the cost can be saved.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a can be used to face milling cutter of processing many specifications chamfer, be in including cutting portion and connection the stalk portion of cutting portion upper end, the cutting portion includes week sword and bottom sword, wherein, the week sword includes from the first chamfer sword, second chamfer sword and the third chamfer sword that upwards set gradually down, the angle of first angle between the centre line of first chamfer sword with the cutting portion is 45 to 60, the angle of second angle between second chamfer sword and the centre line is 15 to 30, the angle of third angle between third chamfer sword with the centre line is 65 to 80.

As a further improvement of the present utility model, the first relief angle of the first chamfer edge is 4 ° to 6 °, the second relief angle of the second chamfer edge is 11 ° to 15 °, and the third relief angle of the third chamfer edge (113) is 27 ° to 33 °.

As a further improvement of the present utility model, four flutes extending helically rearward from the bottom edge are provided in the circumferential direction of the cutting portion, and the helix angle of the flutes is 9 ° to 11 °.

As a further improvement of the present utility model, the flute includes a chip flute and a chip flute, the chip flute intersecting with a side wall of the cylinder in which the cutting portion is located to form the peripheral edge, and the peripheral edge intersecting with the chip flute to form the bottom edge.

As a further improvement of the present utility model, the angle of the bottom edge rake angle of the bottom edge is 9 ° to 11 °, the angle of the bottom edge first relief angle of the bottom edge is 4 ° to 6 °, and the angle of the bottom edge second relief angle of the bottom edge is 16 ° to 20 °.

As a further improvement of the utility model, the core thickness of the cutting portion is 0.3 to 0.5 times the shank diameter.

The beneficial effects of the utility model are as follows: three chamfering edges are arranged on the peripheral edge so as to meet the requirements of processing chamfering at three different angles, and meanwhile, the bottom edge has the function of plane milling, so that one cutter is multipurpose, the working efficiency is improved, and the processing cost is reduced; meanwhile, the cutting capability and strength of the chamfering edge are guaranteed by setting the relief angle of the chamfering edge, the durability of the cutter is improved, and the service life of the cutter is prolonged.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a front view of the present utility model;

FIG. 3 is a schematic view of the relief structure of the chamfer of the present utility model;

fig. 4 is a schematic view of the relief angle structure of the bottom edge of the present utility model.

The following description is made with reference to the accompanying drawings:

1. a cutting portion; 11. a peripheral edge; 111. a first chamfer edge; 112. a second chamfer edge; 113. a third chamfer edge; 12. a bottom edge; 13. a knife slot; 131. chip-containing grooves; 132. a chip removal groove; a1, a first rear angle; a2, a second relief angle; a3, a third rear angle; b1, front angle of bottom edge; b2, a first relief angle of the bottom edge; b3, a second relief angle of the bottom edge; 0. a center line; alpha, a first included angle; beta, a second included angle; gamma, third included angle.

Detailed Description

A preferred embodiment of the present utility model will be described in detail with reference to the accompanying drawings.

Referring to fig. 1 to 4, the face milling cutter for machining multi-specification chamfers provided by the present utility model comprises a cutting portion 1 and a shank portion 2 connected to the upper end of the cutting portion 1, wherein the cutting portion 1 comprises a peripheral edge 11 and a bottom edge 12. Wherein the peripheral edge 11 includes a first chamfer edge 111, a second chamfer edge 112, and a third chamfer edge 113 disposed in order from bottom to top, the first angle α between the first chamfer edge 111 and the center line 0 of the cutting portion 1 being 45 ° to 60 °; the angle of the second included angle beta between the second chamfer edge 112 and the center line 0 is 15 deg. to 30 deg.; the angle of the third included angle γ between the third chamfer edge 113 and the center line 0 is 65 ° to 80 °. Meanwhile, the angle of the first relief angle A1 of the first chamfer edge 111 is 4 ° to 6 °, the angle of the second relief angle A2 of the second chamfer edge 112 is 11 ° to 15 °, and the angle of the third relief angle A3 of the third chamfer edge 113 is 27 ° to 33 °.

Specifically, it is preferable that α=70°, β=20°, γ=50°, the angle of the first relief angle A1 is 5 °, the angle of the second relief angle A2 is 13 °, and the angle of the third relief angle A3 is 30 °. The included angle setting of chamfer sword and cutting portion central line can satisfy the intensity of chamfer sword, improves cutting efficiency, and the clearance of chamfer department can be strengthened in the setting of chamfer sword relief angle simultaneously, makes the cutting in-process, and the smear metal is difficult for taking place to block up.

Referring to fig. 2, four pockets 13 spirally extending from the bottom edge 12 toward one end of the shank 2 are formed in the circumferential direction of the cutting portion 1, and the spiral angle θ of the pockets 13 is 9 ° to 11 °. The flute 13 comprises chip flutes 131 and chip flutes 132, the chip flutes 132 and the side walls of the cylinder in which the cutting portion 1 is located intersect to form peripheral edges 11, and the peripheral edges 11 intersect with the chip flutes 131 to form bottom edges 12. Specifically, as a preferable aspect, θ=10°, the spiral angle ensures the chip-receiving capability of the pocket 13 to smoothly discharge chips, and at the same time increases the cutting capability of the chamfer to prevent the chamfer from chipping or breaking. Meanwhile, when the bottom edge 12 cuts, the chip grooves 132 help to guide the scraps into the chip grooves 131, so that the scraps are prevented from adhering to the surface of the cutter in the milling process, and the cutter cannot cut normally.

Referring to fig. 4, the angle of the bottom edge rake angle B1 of the bottom edge 12 is 9 ° to 11 °, the angle of the bottom edge first relief angle B2 of the bottom edge 12 is 4 ° to 6 °, and the angle of the bottom edge second relief angle B3 of the bottom edge 12 is 16 ° to 20 °. Preferably, the angle of the front angle B1 of the bottom edge is 10 degrees, the angle of the first back angle B2 of the bottom edge is 5 degrees, and the angle of the second back angle B3 of the bottom edge is 18 degrees; through the arrangement of the two relief angles, the contact quantity of the bottom edge to the cut surface can be adjusted, and the bottom edge is prevented from being broken and defective; the cutting edge is sharp through the setting of rake angle, improves work efficiency.

Further, the core thickness of the cutting portion 1 is 0.3 to 0.5 times the diameter of the shank portion 2. For example, when the core thickness of the cutting portion 1 is 0.4 times the diameter of the shank portion 2, the shank portion 2 has a diameter of 12mm, and the core thickness of the cutting portion 1 is 4.8mm.

In summary, the face milling cutter capable of being used for machining multi-specification chamfers provided by the utility model has the advantages that three stepped chamfer edges are arranged on the peripheral edge, so that the functions of machining chamfers with three different angles and simultaneously the bottom edge has a face milling function are realized, the multiple functions of one cutter are realized, the working efficiency is improved, and the machining cost is reduced; meanwhile, the cutting capability and strength of the chamfering edge are guaranteed by setting the relief angle of the chamfering edge, the durability of the cutter is improved, and the service life of the cutter is prolonged.

In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The foregoing description is only of a preferred embodiment of the utility model, which can be practiced in many other ways than as described herein, so that the utility model is not limited to the specific implementations disclosed above. While the foregoing disclosure has been described with reference to certain embodiments, it will be understood by those skilled in the art that various changes and modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. Any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model without departing from the technical solution of the present utility model still falls within the scope of the technical solution of the present utility model.

Claims (6)

1. The utility model provides a face milling cutter that can be used to process many specifications chamfer, includes cutting portion (1) and connects shank (2) in cutting portion (1) upper end, cutting portion (1) include week sword (11) and bottom sword (12), its characterized in that: the peripheral edge (11) comprises a first chamfering edge (111), a second chamfering edge (112) and a third chamfering edge (113) which are sequentially arranged from bottom to top, wherein the angle of a first included angle (alpha) between the first chamfering edge (111) and a central line (0) of the cutting part (1) is 45 DEG to 60 DEG, the angle of a second included angle (beta) between the second chamfering edge (112) and the central line (0) is 15 DEG to 30 DEG, and the angle of a third included angle (gamma) between the third chamfering edge (113) and the central line (0) is 65 DEG to 80 deg.

2. The face milling cutter for machining multi-gauge chamfer of claim 1, wherein: the angle of the first relief angle (A1) of the first chamfer edge (111) is 4 DEG to 6 DEG, the angle of the second relief angle (A2) of the second chamfer edge (112) is 11 DEG to 15 DEG, and the angle of the third relief angle (A3) of the third chamfer edge (113) is 27 DEG to 33 deg.

3. The face milling cutter for machining multi-gauge chamfer of claim 2, wherein: four sipes (13) spirally extending rearward from the bottom edge (12) are formed in the circumferential direction of the cutting portion (1), and the helix angle (θ) of the sipe (13) is 9 ° to 11 °.

4. A face milling cutter usable for machining multi-gauge chamfer as claimed in claim 3, wherein: the tool groove (13) comprises a chip groove (131) and a chip groove (132), the peripheral edge (11) is formed at the intersection of the chip groove (132) and the side wall of the cylinder where the cutting part (1) is located, and the peripheral edge (11) and the chip groove (131) are intersected to form the bottom edge (12).

5. The face milling cutter for machining multi-gauge chamfer of claim 1, wherein: the angle of the bottom edge rake angle (B1) of the bottom edge (12) is 9 ° to 11 °, the angle of the bottom edge first relief angle (B2) of the bottom edge (12) is 4 ° to 6 °, and the angle of the bottom edge second relief angle (B3) of the bottom edge (12) is 16 ° to 20 °.

6. The face milling cutter for machining multi-gauge chamfer of claim 1, wherein: the core thickness of the cutting portion (1) is 0.3 to 0.5 times the diameter of the shank portion (2).