CN216065721U - Ultra-fine grain tungsten carbide steel milling cutter - Google Patents

Abstract

The utility model discloses an ultra-fine grain tungsten carbide steel milling cutter which comprises a cutter handle, a first cutter head and a second cutter head, wherein the first cutter head and the second cutter head extend out of one end of the cutter handle and are provided with a gap D1, the distance D1 is 1.6mm, the distance D2 between the peripheries of the first cutter head and the second cutter head is 6.8mm, end blades are arranged on the end surfaces of the first cutter head and the second cutter head, peripheral blades are arranged on the peripheries of the first cutter head and the second cutter head, and inner side blades are arranged on the inner side surfaces of the first cutter head and the second cutter head. The cutter has the advantages of reasonable structure, safety and convenience in use, difficulty in cutter breakage and good mirror effect, the interval D1 is the inner diameter of the annular groove to be machined, the lengths of the first cutter head and the second cutter head are the depth of the annular groove to be machined, when the cutter works, the first cutter head and the second cutter head rotate downwards at high speed to feed the cutter, a workpiece is machined and formed at one time, the working efficiency is effectively improved, the production requirement is met, the machining precision can be ensured, and the product rejection rate is reduced.

Description

Ultra-fine grain tungsten carbide steel milling cutter

Technical Field

The utility model relates to the field of milling cutters, in particular to an ultra-fine tungsten carbide steel milling cutter.

Background

A milling cutter is a rotary cutter for milling having one or more cutter teeth which, in operation, each cutter tooth cuts off the remainder of a workpiece intermittently in sequence. Milling cutters are mainly used for machining planes, steps, grooves, formed surfaces, cutting off workpieces and the like on milling machines, and in order to ensure that a sufficiently high average chip thickness/feed per tooth is used, the number of milling cutter teeth suitable for the process must be correctly determined.

The existing milling cutter can not ensure the roundness of a processing convex column and the concentricity of an annular groove and the convex column, is easy to deviate during processing, has low processing efficiency and can not meet the processing requirement.

SUMMERY OF THE UTILITY MODEL

The utility model provides an ultra-fine tungsten carbide steel milling cutter aiming at the defects in the prior art, and aims to solve the problems in the background technology.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:

as a further elaboration of the above technical solution: the utility model provides an ultramicron tungsten carbide steel milling cutter, includes handle of a knife, first tool bit and second tool bit, first tool bit with the second tool bit is followed the one end of handle of a knife is stretched out and is provided with interval D1, interval D1 distance is 1.6mm, first tool bit with distance D2 between the second tool bit periphery is 6.8mm, first tool bit with be provided with the end sword on the terminal surface of second tool bit, be provided with the periphery sword in the periphery, the medial surface is provided with the inside sword.

In the above technical solution, the angle of inclination r1 of the end edge with respect to the horizontal plane is 3 °.

In the above technical solution, the peripheral cutting edge includes a first peripheral surface and a second peripheral surface which are connected in sequence, a tangent is made at the periphery of the end cutting edge, an included angle r2 between the first peripheral surface and the tangent is 10 °, and an included angle r3 between the second peripheral surface and the tangent is 20 °.

In the above technical solution, the length of the first outer circumferential surface is 0.55mm, and the length of the second outer circumferential surface is 0.8 mm.

In above-mentioned technical scheme, the end sword is including the first end cutting part and the second end cutting part that connect gradually tangent line is done to the periphery of first end cutting part, first end cutting part is 8 with tangential contained angle r7, second end cutting part is 20 with tangential contained angle r 4.

In the above technical solution, the length of the first end blade portion is 0.55 mm.

In the technical scheme, an included angle r5 between the inner side edge and the axis of the tool holder is 12 degrees.

In the technical scheme, the length of the first cutter head and the second cutter head is 2.6mm, and the inner cutting depth is 2.55 mm.

In the technical scheme, the total length of the knife handle and the first and second knife heads is 50mm, the cross section width of the knife handle is 8mm, and the tail of the knife handle is provided with a chamfer r 6.

Compared with the prior art, the utility model has the beneficial effects that: the cutter is reasonable in structure, safe and convenient to use, not prone to cutter breakage and good in mirror effect, the first cutter head and the second cutter head extend out of one end of the cutter handle and are provided with the interval D1, the distance D1 is 1.6mm, the distance D2 between the peripheries of the first cutter head and the second cutter head is 6.8mm, the interval D1 is the inner diameter of an annular groove to be machined, the length of the first cutter head and the length of the second cutter head are the depth of the annular groove to be machined, when the cutter is in work, the first cutter head and the second cutter head rotate downwards at a high speed to feed the cutter, a workpiece is machined and formed in one step, the working efficiency is effectively improved, the requirement of production quantity is met, the machining precision can be guaranteed, and the product rejection rate is reduced.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a schematic view of the construction of the peripheral edge of the present invention;

FIG. 4 is a schematic view of the construction of an end blade according to the present invention;

fig. 5 is a schematic view of the structure of the inner blade in the present invention.

Detailed Description

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

The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

As shown in fig. 1 to 5, the milling cutter comprises a cutter handle 1, a first cutter head 2 and a second cutter head 3, wherein the first cutter head 2 and the second cutter head 3 extend out from one end of the cutter handle 1 and are provided with a spacing D1, the distance D1 is 1.6 ± 0.01mm, and the spacing D1 is the inner diameter of an annular groove to be machined. Wherein, the distance of interval D1 can be adjusted according to actual processing demand to satisfy the inner diameter demand of annular groove. The distance D2 between the first tool bit 2 and the second tool bit 3 periphery is 6.8 +/-0.01 mm, the end face of the first tool bit 2 and the second tool bit 3 is provided with an end blade 4, the periphery is provided with a peripheral blade 5, and the inner side surface is provided with an inner side blade 6. The end edge 4 and the peripheral edge 5 constitute a main cutting edge, and the peripheral edge 5 and the inside edge 6 constitute a main forming edge.

In this embodiment, as shown in fig. 3, the outer circumferential edge 5 includes a first outer circumferential surface 51 and a second outer circumferential surface 52 which are connected in sequence, a tangent is made on the outer circumference of the end edge 4, an included angle r2 between the first outer circumferential surface 51 and the tangent is 10 ° ± 1 °, and an included angle r3 between the second outer circumferential surface 52 and the tangent is 20 ° ± 2 °. The length of the first outer peripheral surface 51 is 0.55 ± 0.03mm, and the length of the second outer peripheral surface 52 is 0.8 ± 0.05 mm.

As shown in fig. 4, the end blade 4 includes a first end blade portion 41 and a second end blade portion 42 connected in sequence, a tangent line is made on the periphery of the first end blade portion 41, an included angle r7 between the first end blade portion 41 and the tangent line is 8 ° ± 1 °, and an included angle r4 between the second end blade portion 42 and the tangent line is 20 ° ± 2 °. Wherein the length of the first end blade 41 is 0.55 ± 0.03 mm. By adopting the angle setting of the utility model, the maximum effect of the cutting edge can be exerted, the processing efficiency is effectively improved, the cutter is not easy to break, and the service life of the cutter is ensured.

As shown in fig. 1, in particular, the end edge 4 has an inclination angle r1 of 3 ° ± 0.5 ° with respect to the horizontal plane. Specifically, as shown in fig. 5, the included angle r5 between the inner side edge 6 and the axis of the tool shank 1 is 12 ° ± 1 °. By adopting the angle arrangement of the utility model, the maximum effect of the main forming blade can be exerted, the processing efficiency is effectively improved, and the mirror surface effect of the circumferential inner wall of the annular groove is better.

As shown in fig. 2, a connecting surface 7 is arranged at a position between the first tool bit 2 and the second tool bit 3, an inclined surface 8 inclined towards the other end of the shank is arranged on the connecting surface 7, and the inclined surface 8 and the inner side edge 6 form a chip groove. When the plunge milling cutter rotates downwards at a high speed for feeding, the waste chips are discharged quickly, and the influence on processing caused by the blockage of the waste chips is avoided.

Specifically, as shown in fig. 1, the first and second tool bits 2 and 3 have a length of 2.6mm and an inner cutting depth of 2.55 mm. The length of the first tool bit 2 and the second tool bit 3 is the depth of the annular groove to be machined. Wherein, the length of first tool bit 2 and second tool bit 3 can be adjusted according to actual processing demand to satisfy the degree of depth demand of annular groove. Specifically, the total length of the tool shank 1, the first tool bit 2 and the second tool bit 3 is 50mm, the cross section width of the tool shank 1 is 8mm, and a chamfer r6 is arranged at the tail of the tool shank.

Specifically, the slotting cutter is made of nano-particle tungsten carbide, has high toughness and wear resistance, can be used for high-speed M/C high-hardness high-speed cutting, can directly perform rough machining to fine machining on a heat treatment die, reduces the number of tool changing, improves the utilization rate of a machine tool, and saves the die manufacturing time.

The cutter is reasonable in structure, safe and convenient to use, not prone to cutter breakage and good in mirror effect, the first cutter head 2 and the second cutter head 3 extend out of one end of the cutter handle 1 and are provided with the interval D1, the distance D1 is 1.6mm, the distance D2 between the peripheries of the first cutter head 2 and the second cutter head 3 is 6.8mm, the interval D1 is the inner diameter of an annular groove to be machined, the length of the first cutter head 2 and the length of the second cutter head 3 are the depth of the annular groove to be machined, when the cutter is in work, the first cutter head 2 and the second cutter head 3 rotate downwards at a high speed to feed the cutter, a workpiece is machined and formed in one step, the work efficiency is effectively improved, the production quantity requirement is met, the machining precision can be guaranteed, and the product rejection rate is reduced.

The technical scope of the present invention is not limited to the above embodiments, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.

Claims (9)

1. The utility model provides an ultramicron tungsten carbide steel milling cutter, its characterized in that, includes handle of a knife, first tool bit and second tool bit, first tool bit with the second tool bit is followed the one end of handle of a knife is stretched out and is provided with interval D1, interval D1 distance is 1.6mm, first tool bit with distance D2 between the second tool bit periphery is 6.8mm, first tool bit with be provided with the end sword on the terminal surface of second tool bit, be provided with the periphery sword in the periphery, the medial surface is provided with interior side sword.

2. The milling cutter according to claim 1, wherein the end blade has an inclination angle r1 of 3 ° with respect to a horizontal plane.

3. The milling cutter according to claim 1, wherein the outer peripheral edge comprises a first outer peripheral surface and a second outer peripheral surface which are connected in series, a tangent is formed at the outer periphery of the end edge, an angle r2 between the first outer peripheral surface and the tangent is 10 °, and an angle r3 between the second outer peripheral surface and the tangent is 20 °.

4. The milling cutter according to claim 3, wherein the first outer peripheral surface has a length of 0.55mm, and the second outer peripheral surface has a length of 0.8 mm.

5. The milling cutter according to claim 1, wherein the end blade comprises a first end blade portion and a second end blade portion connected in series, a tangent is formed at an outer periphery of the first end blade portion, an angle r7 between the first end blade portion and the tangent is 8 °, and an angle r4 between the second end blade portion and the tangent is 20 °.

6. The milling cutter according to claim 5, wherein the first end blade portion has a length of 0.55 mm.

7. The milling cutter according to claim 1, wherein the included angle r5 between the inner cutting edge and the axis of the shank is 12 °.

8. The milling cutter according to claim 1, wherein the first and second tips have a length of 2.6mm and an inner cutting depth of 2.55 mm.

9. The milling cutter according to claim 1, wherein the total length of the shank and the first and second tips is 50mm, the cross-sectional width of the shank is 8mm, and a chamfer r6 is provided at the end of the shank.

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