CN213410690U - Large-pitch staggered-tooth thread milling cutter - Google Patents
Large-pitch staggered-tooth thread milling cutter Download PDFInfo
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- CN213410690U CN213410690U CN202022572788.7U CN202022572788U CN213410690U CN 213410690 U CN213410690 U CN 213410690U CN 202022572788 U CN202022572788 U CN 202022572788U CN 213410690 U CN213410690 U CN 213410690U
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Abstract
The utility model discloses a big tooth pitch side set thread milling cutter, including handle of a knife and the portion of milling of setting at the handle of a knife front end, the portion of milling is equipped with a plurality of peripheral cutting edges, is located the heliciform chip groove between two adjacent peripheral cutting edges periphery cutting edge upper surface is provided with the trapezoidal cutting edge of a plurality of equipartition distributions and the first chip groove between two adjacent trapezoidal cutting edges, and adjacent trapezoidal cutting edge is mirror image cross structure with first chip groove, and wherein trapezoidal cutting edge in two adjacent peripheral cutting edges is wrong tooth state distribution and arranges. Adopt thread milling cutter, have simple structure, the chip removal is good, not only can improve machining efficiency, practice thrift man-hour, can also strengthen the stability of cutter to and the life of extension cutter, advantage such as the machining stability is good is fit for popularizing and applying.
Description
Technical Field
The utility model belongs to the technical field of machine tool cutter technical field in the machining process and specifically relates to a big tooth pitch side set thread milling cutter.
Background
In the machining process, with the development of science and technology, materials such as titanium alloy, stainless steel, high-temperature alloy, high-hardness steel and the like are widely used in military industry or civil enterprises, and when the materials are machined, chip breaking and removal are difficult, the phenomenon of tool sticking is serious, the tool is abraded too fast and the like. The traditional thread processing method mainly adopts a threading tool to turn threads or adopts a screw tap and a die to manually tap and sleeve and buckle. When machining difficult-to-machine metal materials, the tap often twists or even breaks in the part due to the cutting forces that are too great. Particularly in machining long chip materials, once chip removal is poor, the chips can wrap around the tap or block the hole, often resulting in the tap breaking or breaking in the part. Removing a broken tap is time consuming, labor intensive and may damage the part. In the case of a large-scale thread processing, it is very difficult to improve the processing efficiency due to the relatively low cutting speed limit of the tap and the reverse tool retraction after the thread is processed.
The stainless steel, titanium alloy, high temperature alloy and other hard material and high hardness steel have high tensile strength, great cutting resistance and other features. Thread milling cutters for processing difficult-to-process materials and high-hardness steel commonly on the market at present are divided into two types: the thread milling cutter comprises a whole hard alloy thread milling cutter and a thread milling cutter provided with a hard alloy blade. Among them, the solid carbide thread milling cutter is commonly provided with the following three types: full thread milling cutter, three thread milling cutter and single thread milling cutter adopt three tooth and single thread milling cutter main problems are that machining efficiency is low, and adopt full thread milling cutter to have the cutter relieving phenomenon more serious. Particularly, for thread milling cutters with the specifications below M30 on the market, the feeding speed of the milling cutter is not suitable to be too high, because the blades are in a screw pressing type, if the feeding speed is too high, the screws are easy to break, the screws and the blades fly out, the tool tip is broken, the service life of the cutter is influenced, and in case of serious conditions, the screws and the blades can fly out at a high speed, so that personal injury safety accidents are caused. Due to the fact that the machining requirements of threaded holes are continuously increased, and nowadays, advanced technology is developed, data machining centers become irreplaceable tools for various production enterprises, so that milling machining is increasingly used for machining threads, and the machining method has the advantages of being high in machining efficiency, simplified in steps, high in machining precision and the like, and brings greater benefits to the enterprises. Therefore, based on this purpose, for reducing milling cutter's cutter back-off phenomenon, make the processing of screw hole more high-efficient, the cutter design of constantly innovating designs a big tooth pitch side by side tooth thread milling cutter to satisfy the market needs.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to the problem that exists in the background art, provide a processing cutter that is applicable to materials such as titanium alloy, stainless steel, superalloy and high hard steel, it is good to have the chip removal, not only can improve machining efficiency, practices thrift man-hour, can also strengthen the stability of cutter to and the life of extension cutter, specifically speaking is a big tooth pitch side set thread milling cutter.
For solving the technical problem, the utility model discloses the technical scheme who adopts does: the utility model provides a big tooth pitch side set thread milling cutter, is including handle of a knife and the portion of milling of setting at the handle of a knife front end, the portion of milling is equipped with a plurality of peripheral cutting edges, is located the heliciform chip groove between two adjacent peripheral cutting edges periphery cutting edge upper surface is provided with the trapezoidal cutting edge of a plurality of equipartition distributions and the first chip groove between two adjacent trapezoidal cutting edges, and adjacent trapezoidal cutting edge is mirror image cross structure with first chip groove, and wherein the trapezoidal cutting edge in two adjacent peripheral cutting edges is the distribution of side set state and arranges.
Further, a big pitch side set thread milling cutter, wherein trapezoidal cutting edge in two adjacent peripheral cutting edges, one of them is main cutting edge, another is vice cutting edge, main cutting edge is followed the outside peripheral cutting edge direction of terminal surface of portion of milling distributes, vice cutting edge is followed the terminal surface of portion of milling differs to peripheral cutting edge direction distribution with main cutting edge two pitch intervals.
Further, a big tooth pitch side set thread milling cutter, wherein be in periphery cutting edge upper surface is provided with the trapezoidal cutting edge of four equipartition distributions, and four trapezoidal cutting edges are first, second, third and fourth trapezoidal cutting edge respectively from a left side to the right side, wherein between first trapezoidal cutting edge and the trapezoidal cutting edge of second, between the trapezoidal cutting edge of second and the trapezoidal cutting edge of third to and form into first chip groove between trapezoidal cutting edge of third and the trapezoidal cutting edge of fourth, and be formed with the second chip groove between trapezoidal cutting edge of fourth and the handle of a knife, the second chip groove is located on the periphery cutting edge.
Further, a big tooth pitch side set thread milling cutter, wherein first trapezoidal cutting edge in the main cutting edge is followed the terminal surface setting of portion of milling, and first trapezoidal cutting edge in the vice cutting edge and the main cutting edge differs two pitch intervals set up in on the periphery cutting edge.
Further, a big pitch malposed tooth thread milling cutter, wherein the length of first chip groove is the interval distance of four pitch, and the length of second chip groove is the interval distance of three pitch.
Further, a big pitch side set thread milling cutter, wherein be equipped with two, four, six or eight periphery cutting edges in milling the portion to and corresponding heliciform chip groove, two adjacent periphery cutting edges are a set of, two adjacent trapezoidal cutting edges in every set of, one of them is main cutting edge, another is vice cutting edge, is to be different two pitch intervals between main cutting edge and the vice cutting edge and staggers the distribution and arrange.
Further, a big tooth pitch side set thread milling cutter, wherein handle of a knife and portion of milling adopt carbide preparation structure as an organic whole, and the surface of the portion of milling is formed with the one deck wearing layer through the heat treatment mode.
Further, a big tooth pitch side set thread milling cutter, wherein polishing treatment is done to the surface of handle of a knife, its roughness is less than Ra0.4.
Adopt a big tooth pitch side of set tooth thread milling cutter, because trapezoidal cutting edge in two adjacent peripheral cutting edges in every group is and differs two pitch intervals and staggers the distribution and arrange, and trapezoidal cutting edge on the same peripheral cutting edge differs four pitch intervals and arranges, its application method is the same with ordinary full tooth thread milling cutter, trapezoidal cutting edge axial through the front end mills, accomplish screw hole processing, can carry out big depth of cut, cut wide greatly, feed the screw thread and mill greatly, but its cutting resistance greatly reduced, the trapezoidal cutting edge of rear end can have the supporting role to the screw hole of processing, can effectively reduce milling cutter's the cutter relieving phenomenon, just so can be under the condition of high feed, improve the machining efficiency of screw hole. Adopt thread milling cutter, have simple structure, the chip removal is good, not only can improve machining efficiency, practice thrift man-hour, can also strengthen the stability of cutter to and the life of extension cutter, advantage such as the machining stability is good is fit for popularizing and applying.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic end view of the milling section of FIG. 1;
fig. 3 is a partial cross-sectional view of a trapezoidal cutting edge of two adjacent peripheral cutting edges of the present invention;
fig. 4 is a cross-sectional view of two adjacent trapezoidal cutting edges of the present invention.
Shown in the figure: 1-tool shank, 2-milling part, 21-peripheral cutting edge, 211-trapezoidal cutting edge, 212-first chip groove, 213-second chip groove and 22-spiral chip groove.
Detailed Description
As shown in fig. 1 to 4, a big tooth pitch side set thread milling cutter, including handle of a knife 1 and the portion 2 that mills of setting at handle of a knife 1 front end, it is equipped with a plurality of periphery cutting edges 21, is located the heliciform chip groove 22 between two adjacent periphery cutting edges 21 to mill portion 2 periphery cutting edge 21 upper surface is provided with the trapezoidal cutting edge 211 of a plurality of equipartition distributions and the first chip groove 212 between two adjacent trapezoidal cutting edges 211, and adjacent trapezoidal cutting edge 211 is mirror image cross structure with first chip groove 212, and wherein trapezoidal cutting edge 211 in two adjacent periphery cutting edges 21 is side set state distribution.
Further, a big pitch staggered tooth thread milling cutter, wherein trapezoidal cutting edge 211 among two adjacent periphery cutting edges 21, one of them is main cutting edge, is called the C tooth for short, and another is vice cutting edge, is called the D tooth for short, the C tooth is followed the outside periphery cutting edge 21 direction of terminal surface of portion of milling 2 distributes, the D tooth is followed the terminal surface that mills portion 2 and the outside periphery cutting edge 21 direction distribution of two pitch P intervals that the C tooth differs. Wherein the partial cross-sectional view of the C and D teeth is shown in fig. 3.
Further, a big pitch staggered tooth thread milling cutter, wherein periphery cutting edge 21 upper surface is provided with four equant trapezoidal cutting edges 211 that distribute, and four trapezoidal cutting edges 211 are first, second, third and fourth trapezoidal cutting edge respectively from a left side to the right side, wherein between first trapezoidal cutting edge and the trapezoidal cutting edge of second, between trapezoidal cutting edge of second and the trapezoidal cutting edge of third to and form into first chip groove 212 between trapezoidal cutting edge of third and the trapezoidal cutting edge of fourth, and be formed with second chip groove 213 between trapezoidal cutting edge of fourth and the handle of a knife 1, second chip groove 213 is located on the periphery cutting edge 21. Wherein the length of the first flute 212 is a spacing distance of four pitches P, and the length of the second flute 213 is a spacing distance of three pitches P. The pitch P is a distance between two adjacent trapezoidal cutting edges 211, and the included angle formed between two adjacent trapezoidal cutting edges 211 is a profile angle, and the pitch P and the profile angle are shown in fig. 4.
Further, a big tooth pitch side set thread milling cutter, wherein first trapezoidal cutting edge in the main cutting edge is followed the terminal surface setting of portion of milling 2, and first trapezoidal cutting edge in the vice cutting edge and the main cutting edge differs two pitch P intervals set up in on the periphery cutting edge 21.
Further, the large-pitch staggered-tooth thread milling cutter of the utility model is characterized in that the cutter handle 1 and the milling part 2 are made of hard alloy as an integral structure, and a wear-resistant layer is formed on the surface of the milling part 2 in a heat treatment mode; wherein the surface of the tool shank 1 is polished, and the roughness of the surface is lower than Ra0.4.
Aiming at different processing requirements, two, four, six or eight peripheral cutting edges 21 and corresponding spiral chip grooves 22 are arranged in the milling part 2, two adjacent peripheral cutting edges 21 are in a group, two adjacent trapezoidal cutting edges 211 in each group are provided, one of the two adjacent trapezoidal cutting edges is a main cutting edge, namely C teeth for short, and the other is an auxiliary cutting edge, namely D teeth for short, and the C teeth and the D teeth are distributed and arranged in a staggered mode at intervals with two screw pitches P. In the specific design process, for the threaded holes below M10, two or two groups, namely two or four peripheral cutting edges 21 and corresponding helical flutes 22 are designed, for the threaded holes between M10 and M30, two or three groups, namely four or six peripheral cutting edges 21 and corresponding helical flutes 22 are designed, and for the threaded holes above M30, three or four groups, namely six or eight peripheral cutting edges 21 and corresponding helical flutes 22 are designed. By adopting a plurality of groups of peripheral cutting edges 21, the requirements of large cutting depth, large cutting width, large feed threaded hole and milling processing can be met.
Adopt a big tooth pitch side by side tooth thread milling cutter, when in-service processing, its application method is the same with ordinary full tooth thread milling cutter, its difference lies in can carrying out big depth of cut, cut wide greatly, feed the screw thread and mill greatly, can eliminate full tooth thread milling cutter's cutter relieving phenomenon, can improve 2 ~ 6 times than single tooth or three thread milling cutter machining efficiency again simultaneously, perfect solution cutter relieving phenomenon, just so can be under the condition of high feed, improve the machining efficiency of screw hole.
To sum up, adopt thread milling cutter, have simple structure, the chip removal is good, not only can improve machining efficiency, practice thrift manufacturing man-hour, can also strengthen the stability of cutter to and the life of extension cutter, advantage such as machining stability is good is fit for popularizing and applying.
The utility model discloses a protection scope is not only limited to the disclosed technical scheme of embodiment, above only do the utility model discloses a preferred embodiment, and not the restriction the utility model discloses, all basis the utility model discloses an any slight modification, equivalent replacement and improvement that technical scheme did all should contain within the utility model discloses within technical scheme's the protection scope.
Claims (8)
1. The utility model provides a big tooth pitch side set thread milling cutter which characterized in that: milling part (2) including handle of a knife (1) and setting at handle of a knife (1) front end, milling part (2) and being equipped with a plurality of periphery cutting edges (21), being located heliciform chip groove (22) between two adjacent periphery cutting edges (21) periphery cutting edge (21) upper surface is provided with trapezoidal cutting edge (211) of a plurality of equipartition distributions and first chip groove (212) between two adjacent trapezoidal cutting edge (211), and adjacent trapezoidal cutting edge (211) are mirror image cross structure with first chip groove (212), and wherein trapezoidal cutting edge (211) in two adjacent periphery cutting edges (21) are wrong tooth state distribution and arrange.
2. A large pitch offset thread milling cutter according to claim 1, wherein: trapezoidal cutting edge (211) among two adjacent peripheral cutting edges (21), one of them is main cutting edge, and another is secondary cutting edge, main cutting edge is followed the terminal surface of portion of milling (2) distributes to peripheral cutting edge (21) direction, secondary cutting edge is followed the terminal surface of portion of milling (2) and main cutting edge differ two pitch interval and distribute to peripheral cutting edge (21) direction.
3. A large pitch offset thread milling cutter according to claim 2, wherein: periphery cutting edge (21) upper surface is provided with trapezoidal cutting edge (211) of four equal distributions, and four trapezoidal cutting edge (211) are first, second, third and fourth trapezoidal cutting edge from a left side to the right side respectively, wherein between first trapezoidal cutting edge and the trapezoidal cutting edge of second, between the trapezoidal cutting edge of second and the trapezoidal cutting edge of third to and form first chip groove (212) between trapezoidal cutting edge of third and the trapezoidal cutting edge of fourth, and be formed with second chip groove (213) between fourth trapezoidal cutting edge and handle of a knife (1), second chip groove (213) are located on periphery cutting edge (21).
4. A large pitch offset thread milling cutter according to claim 3, wherein: a first of the main cutting edges is arranged along the end face of the milling section (2), while a first of the secondary cutting edges is arranged on the peripheral cutting edge (21) at two pitch intervals from the first of the main cutting edges.
5. A large pitch offset thread milling cutter according to claim 3, wherein: the first flutes (212) are four pitches apart in length, and the second flutes (213) are three pitches apart in length.
6. A large pitch offset thread milling cutter according to claim 1, wherein: be equipped with two, four, six or eight periphery cutting edges (21) in milling portion (2) to and corresponding heliciform chip groove (22), two adjacent periphery cutting edges (21) are a set of, two adjacent trapezoidal cutting edges (211) in every group, and one of them is main cutting edge, and another is vice cutting edge, is to differ two pitch interval stagger distribution between main cutting edge and the vice cutting edge and arranges.
7. A large pitch offset thread milling cutter according to claim 1, wherein: the tool holder (1) and the milling part (2) are made of hard alloy into an integral structure, and a wear-resistant layer is formed on the surface of the milling part (2) in a heat treatment mode.
8. A large pitch offset thread milling cutter according to claim 1, wherein: the surface of the tool handle (1) is polished, and the roughness of the surface is lower than Ra0.4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022572788.7U CN213410690U (en) | 2020-11-10 | 2020-11-10 | Large-pitch staggered-tooth thread milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022572788.7U CN213410690U (en) | 2020-11-10 | 2020-11-10 | Large-pitch staggered-tooth thread milling cutter |
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| Publication Number | Publication Date |
|---|---|
| CN213410690U true CN213410690U (en) | 2021-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022572788.7U Active CN213410690U (en) | 2020-11-10 | 2020-11-10 | Large-pitch staggered-tooth thread milling cutter |
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| CN (1) | CN213410690U (en) |
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