CN210451127U

CN210451127U - Stainless steel processing end milling cutter

Info

Publication number: CN210451127U
Application number: CN201921089923.3U
Authority: CN
Inventors: 魏晓军
Original assignee: Beijing Boying Tuo Technology Co ltd
Current assignee: Beijing Boying Tuo Technology Co ltd
Priority date: 2019-07-11
Filing date: 2019-07-11
Publication date: 2020-05-05
Anticipated expiration: 2029-07-11

Abstract

The utility model relates to a stainless steel processing end mill, including the body, the body divide into cutting portion and handle of a knife portion along the axial, and the side of cutting portion is equipped with a plurality of heliciform periphery swords, constitutes a helicla flute between two adjacent periphery swords, and the helix angle α of two adjacent helicla flutes is different, and the terminal surface of cutting portion is equipped with a plurality of end blades that correspond with the periphery sword, and a plurality of end blades set up for the end surface central point asymmetry of cutting portion, the utility model discloses can be when adding the frequency of vibration of the axle of symmetry of disordering, prevent that it from producing vibrations because of resonance, improve machining efficiency, improve the cutter life-span, reduce the shut down cutter change time, reached the purpose that reduces.

Description

Stainless steel processing end milling cutter

Technical Field

The utility model relates to a metal processing field further relates to a metal processing cutter, concretely relates to stainless steel processing end mill.

Background

The end mill is the most used milling cutter on a numerical control machine tool, and cutting cutters are arranged on the cylindrical surface and the end surface of the end mill, and can cut simultaneously or independently. The milling cutter is mainly used for plane milling, groove milling, step surface milling and profiling milling. With manufacturing controls on machining costs, the greater the demand for high performance tools. When the existing milling cutter is used, the cutting edge generates serious vibration due to resonance, so that the machining efficiency is poor, the cutting edge of the milling cutter is quickly abraded, the milling cutter needs to be frequently replaced, and the metal machining cost is indirectly increased.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a milling cutter is found in stainless steel processing, the concrete scheme is as follows:

the spiral cutting tool comprises a body, the body is divided into a cutting part and a tool shank part along the axial direction, a plurality of spiral outer circumferential edges are arranged on the side face of the cutting part, a spiral groove is formed between every two adjacent outer circumferential edges, the spiral angles α of every two adjacent spiral grooves are different, a plurality of bottom edges corresponding to the outer circumferential edges are arranged on the end face of the cutting part, and the bottom edges are asymmetrically arranged relative to the center point of the end face of the cutting part.

Further, the length of the body is 65mm, and the symmetry tolerance of the body is +/-1 mm; the cutting edge length of the cutting part is 20mm, the upper limit tolerance of the cutting part is +0.5mm, and the lower limit tolerance of the cutting part is 0; the cutter diameter of the cutting part is 10mm, the upper limit tolerance of the cutting part is-0.008 mm, and the lower limit tolerance of the cutting part is-0.02 mm; the diameter of the cutter handle part is 10mm, the upper limit tolerance of the cutter handle part is minus 0.002mm, and the lower limit tolerance of the cutter handle part is minus 0.008 mm; the core thickness of the cutting part is 6.7mm, and the symmetry tolerance of the cutting part is +/-0.05 mm.

Further, the number of the peripheral cutting edges and the number of the bottom cutting edges are four, the four peripheral cutting edges are respectively a first cutting edge, a second cutting edge, a third cutting edge and a fourth cutting edge, the helix angle of the helical groove between the first cutting edge and the second cutting edge is 40 °, the helix angle of the helical groove between the second cutting edge and the third cutting edge is 38 °, the helix angle of the helical groove between the third cutting edge and the fourth cutting edge is 40 °, and the helix angle of the helical groove between the fourth cutting edge and the first cutting edge is 38 °; the bottom blades are all arranged through a symmetrical shaft, and included angles among the four bottom blades are respectively 92 degrees, 85 degrees, 95 degrees and 88 degrees.

Further, the front angle β of the peripheral edge₁8 deg. with an upper limit tolerance of +1 deg. and a lower limit tolerance of 0 deg., and a relief angle β of the peripheral edge₂10 degrees with a symmetric tolerance of +/-1 degree; the peripheral edge comprises a peripheral edge and an outer edgeAnd the ratio of the edge width of the peripheral first edge to the edge diameter is 0.07:1, and the edge width of the peripheral second edge is 1.3 times of the edge width of the peripheral first edge.

Further, the edge width of the peripheral edge is 0.7mm, and the symmetry tolerance is +/-0.05 mm; the edge width of the two peripheral edges is 0.9mm, and the symmetry tolerance of the two peripheral edges is +/-0.05 mm.

Further, the rake angle γ of the bottom edge₁Is 1 DEG, the first relief angle gamma of the bottom edge₂10 degrees with a symmetric tolerance of +/-1 degree; a second relief angle gamma of the bottom edge₃18 degrees with a symmetric tolerance of ± 1 degree; the ratio of the edge width to the edge diameter of the bottom edge is 0.075: 1.

Further, the edge width of the bottom edge is 0.75mm, and the symmetry tolerance is +/-0.05 mm.

Furthermore, a front cutter face formed by the bottom blade is concave inwards, a clearance angle delta between the bottom blade and the end face of the cutting part is 1 degree, and the blade tip of the bottom blade passes through the chamfer.

Further, a bottom blade slot is formed in the proximal end of the bottom blade, and the included angle between the bottom blade slot and the bottom blade is 37 degrees.

The beneficial effects of the utility model reside in that: the utility model provides a stainless steel processing end mill breaks up the vibration frequency of symmetry axle man-hour, prevents that it from improving machining efficiency because resonance produces vibrations, improves the cutter life-span, reduces and shuts down the cutter change time, has reached the purpose that reduces the cost of manufacture.

Drawings

FIG. 1 is a schematic structural diagram of the present invention,

FIG. 2 is a schematic view of A-A in FIG. 1,

FIG. 3 is a schematic view of the structure of the bottom blade of the present invention,

FIG. 4, a schematic diagram of B-B in FIG. 3,

fig. 5 is a schematic view of C-C in fig. 3.

Figure number and name: 1. body, 2, cutting part, 3, handle portion, 4, peripheral sword, 5, helicla flute, 6, end sword.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, which are provided only for explaining the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1 and 2, the stainless steel processing end mill comprises a body 1, wherein the body 1 is divided into a cutting part 2 and a cutter handle part 3 along the axial direction, four spiral outer circumferential edges 4 are arranged on the side surface of the cutting part 2, a spiral groove 5 is formed between every two adjacent outer circumferential edges, the spiral angles α of every two adjacent spiral grooves 5 are different, a plurality of bottom edges 6 corresponding to the outer circumferential edges 4 are arranged on the end surface of the cutting part 2, and the bottom edges are asymmetrically arranged relative to the center point of the end surface of the cutting part 2.

Referring to fig. 1, the length of the body 1 is 65mm, and the symmetry tolerance is ± 1 mm; the cutting edge length of the cutting part 2 is 20mm, the upper limit tolerance of the cutting part is +0.5mm, and the lower limit tolerance of the cutting part is 0; the cutter diameter of the cutting part 2 is 10mm, the upper limit tolerance of the cutting part is minus 0.008mm, and the lower limit tolerance of the cutting part is minus 0.02 mm; the diameter of the cutter handle part 3 is 10mm, the upper limit tolerance of the cutter handle part is-0.002 mm, and the lower limit tolerance of the cutter handle part is-0.008 mm; the core thickness of the cutting portion 2 was 6.7mm with a symmetry tolerance of + -0.05 mm. The four peripheral edges 4 are respectively a first edge, a second edge, a third edge and a fourth edge, the helix angle of a spiral groove between the first edge and the second edge is 40 degrees, the helix angle of a spiral groove between the second edge and the third edge is 38 degrees, the helix angle of a spiral groove between the third edge and the fourth edge is 40 degrees, and the helix angle of a spiral groove between the fourth edge and the first edge is 38 degrees; the grinding of the spiral groove adopts a forming grinding wheel, so that enough chip containing space is reasonably provided, meanwhile, smooth chip removal can be realized, the strength requirement of the maximum cutting edge is met, the grinding of the spiral groove adopts 4-edge unequal design, the vibration frequency of a symmetry axis is disturbed during processing, and the vibration caused by resonance is prevented. The bottom edges 6 are all arranged through a symmetrical axis, and the included angles among the four bottom edges 6 are respectively 92 degrees, 85 degrees, 95 degrees and 88 degrees.

As shown in fig. 2, the front angle β of the peripheral edge 4₁8 deg. with an upper limit tolerance of +1 deg. and a lower limit tolerance of 0 deg., and a relief angle β of the peripheral edge 4₂10 degrees with a symmetric tolerance of +/-1 degree; the peripheral edge 4 comprises a first peripheral edge and a second peripheral edge, the ratio of the edge width of the first peripheral edge to the edge diameter is 0.07:1, and the second peripheral edgeThe edge width of the edge is 1.3 times of the edge width of the periphery. The edge width of the outer circumference edge is 0.7mm, and the symmetry tolerance is +/-0.05 mm; the width of the two peripheral edges is 0.9mm, the symmetric tolerance is +/-0.05 mm, and the strength is ensured while the sharpness is improved.

As shown in fig. 4, the rake angle γ of the bottom edge 6₁Is 1 DEG, and the first relief angle gamma of the bottom edge 6₂10 degrees with a symmetric tolerance of +/-1 degree; second relief angle gamma of bottom edge 6₃18 degrees with a symmetric tolerance of ± 1 degree; the ratio of the edge width to the diameter of the bottom edge 6 is 0.075: 1. The bottom edge 6 has a width of 0.75mm and a symmetry tolerance of + -0.05 mm. As shown in fig. 5, the rake face formed by the end cutting edge 6 is recessed, the clearance angle δ between the end cutting edge 6 and the end face of the cutting portion 2 is 1 °, and the cutting edge of the end cutting edge 6 passes through the chamfer. The end edge 6 is equipped with the end edge fluting near heart end, and the end edge fluting is 37 for the contained angle of end edge 6, has guaranteed the intensity of cutting edge, improves the cutting edge sharpness simultaneously, and cutting edge point portion increases R0.5 (not drawn in the drawing, adjustable according to circumstances operating mode) chamfer and prevents heavy cutting tipping.

In summary, the preferred embodiments of the present invention are only examples, and the scope of the present invention is not limited thereto, and all equivalent changes and modifications made in accordance with the scope of the present invention and the contents of the specification are within the scope covered by the present invention.

Claims

1. The stainless steel processing end mill comprises a body (1), wherein the body (1) is axially divided into a cutting part (2) and a cutter handle part (3), and is characterized in that a plurality of spiral peripheral edges (4) are arranged on the side face of the cutting part (2), a spiral groove (5) is formed between every two adjacent peripheral edges, the spiral angles α of every two adjacent spiral grooves (5) are different, a plurality of bottom edges (6) corresponding to the peripheral edges (4) are arranged on the end face of the cutting part (2), and the bottom edges are asymmetrically arranged relative to the center point of the end face of the cutting part (2).

2. A stainless steel machining end mill according to claim 1, wherein: the length of the body (1) is 65mm, and the symmetrical tolerance of the body is +/-1 mm; the cutting edge length of the cutting part (2) is 20mm, the upper limit tolerance of the cutting part is +0.5mm, and the lower limit tolerance of the cutting part is 0; the cutter diameter of the cutting part (2) is 10mm, the upper limit tolerance of the cutting part is-0.008 mm, and the lower limit tolerance of the cutting part is-0.02 mm; the diameter of the cutter handle part (3) is 10mm, the upper limit tolerance of the cutter handle part is-0.002 mm, and the lower limit tolerance of the cutter handle part is-0.008 mm; the core thickness of the cutting part (2) is 6.7mm, and the symmetry tolerance of the cutting part is +/-0.05 mm.

3. A stainless steel machining end mill according to claim 1, wherein: the number of the peripheral edges (4) and the number of the bottom edges (6) are four, the four peripheral edges (4) are respectively a first edge, a second edge, a third edge and a fourth edge, the helix angle of a helical groove between the first edge and the second edge is 40 degrees, the helix angle of a helical groove between the second edge and the third edge is 38 degrees, the helix angle of a helical groove between the third edge and the fourth edge is 40 degrees, and the helix angle of a helical groove between the fourth edge and the first edge is 38 degrees; the bottom blades (6) are arranged through a symmetrical axis, and included angles among the four bottom blades (6) are respectively 92 degrees, 85 degrees, 95 degrees and 88 degrees.

4. The stainless steel machining end mill according to claim 3, wherein the rake angle β of the peripheral edge (4)₁8 deg. with an upper limit tolerance of +1 deg. and a lower limit tolerance of 0 deg., and a relief angle β of the peripheral edge (4)₂10 degrees with a symmetric tolerance of +/-1 degree; the peripheral cutting edge (4) comprises a peripheral first cutting edge and a peripheral second cutting edge, the ratio of the cutting edge width of the peripheral first cutting edge to the cutting edge diameter is 0.07:1, and the cutting edge width of the peripheral second cutting edge is 1.3 times of the cutting edge width of the peripheral first cutting edge.

5. A stainless steel machining end mill according to claim 4, wherein: the edge width of the peripheral edge is 0.7mm, and the symmetric tolerance of the peripheral edge is +/-0.05 mm; the edge width of the two peripheral edges is 0.9mm, and the symmetry tolerance of the two peripheral edges is +/-0.05 mm.

6. A stainless steel machining end mill according to claim 3, wherein: a rake angle gamma of the bottom edge (6)₁Is 1 DEG, a first relief angle gamma of the bottom edge (6)₂10 degrees with a symmetric tolerance of +/-1 degree; a second relief angle gamma of the bottom edge (6)₃18 degrees with a symmetric tolerance of ± 1 degree; the ratio of the edge width to the diameter of the bottom edge (6) is 0.075: 1.

7. A stainless steel machining end mill according to claim 6, wherein: the edge width of the bottom edge (6) is 0.75mm, and the symmetry tolerance of the bottom edge is +/-0.05 mm.

8. A stainless steel machining end mill according to claim 1, wherein: the rake face formed by the bottom blade (6) is concave inwards, the clearance angle delta between the bottom blade (6) and the end face of the cutting part (2) is 1 degree, and the blade tip of the bottom blade (6) passes through the chamfer.

9. A stainless steel machining end mill according to claim 8, wherein: the proximal end of the bottom blade (6) is provided with a bottom blade groove, and the included angle of the bottom blade groove relative to the bottom blade (6) is 37 degrees.