• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a milling tool, in particular an end mill, Torusfräser or the like for machining of metallic and non-metallic workpieces, which enables high machining performance and thus low production times in conjunction with higher service life and improved dimensional accuracy of the machined workpiece surfaces. This is achieved by a milling tool having a tool shank and a working area, which has a milling surface extending in the periphery of the milling tool and running in a helix on a tooth with a cutting edge (5), wherein the cutting edge (5) on the at least one tooth (2 ), the guide support strip (6) has a smaller diameter than the cutting edge (5). Between the cutting edge (5) and guide support strip (6) is a relief space (9 ) intended.
    公开号:AT13252U1
    申请号:TGM369/2012U
    申请日:2012-09-19
    公开日:2013-09-15
    发明作者:
    申请人:Naef Marco；Bejtulai Jetmir；
    IPC主号:
    专利说明:

    Austrian Patent Office AT13 252U1 2013-09-15
    description
    MILLING TOOL
    The invention relates to a milling tool, in particular an end mill, Torusfräser or replaceable heads, inserts, saw blades o. A. for machining metallic or non-metallic workpieces.
    Milling tools with shank are both with helical cutting (US-B-7367754), front-side separating inserts (US-A-20040253062) or with cutting rollers on the front (JP-A-2002361511) known. A three-edged cutting tool according to WO-A-2005122690 has, after each cutting edge, a rear reinforcement with a distance to the outer diameter of the tool. The distance is at most 1/5 of the outside diameter, which should improve the torsional behavior and the bending stiffness.
    In order to reduce the tendency to oscillate should have at least some teeth of a milling tool according to DE-U-29715192 different gradients.
    An end mill according to DE-A-10325600 has front cutting with adjacent to this peripheral cutting, which are each offset by a pitch angle to each other on the tool circumference, each peripheral cutting edge forms a rake and between the peripheral cutting a chip space is formed. Between the peripheral cutting edges different pitch angles are formed and the rake angle should be negative, which should allow a vibration-free tool operation even with high cutting performance.
    Another roughing cutter according to EP-A-2078574 is provided with a beveled cutting edge to achieve their stabilization and improved chip removal. For this purpose, the beveled portion of the cutting edge is provided in the longitudinal direction with a serrated edge. In a further embodiment, the period of the serrated edge is greater than the period of a wave-shaped roughing toothing on the milling surface. WO-A-2010079374 discloses a cylindrical milling tool intended for simultaneous roughing and finishing, with roughing and finishing blades located on a tooth. The radius of the roughing edge is smaller than the radius of the finishing edge. The cutting edges are arranged approximately coaxially with the cylinder axis. The roughing cutters are provided with chipbreaker grooves and the roughing blade is spaced from the finishing blade by a smaller chip space.
    The invention has for its object to provide a milling tool, in particular an end mill, Torusfräser or the like for machining of metallic or non-metallic workpieces, for roughing such as fine machining, which, compared to the prior art higher metal removal rates and thus lower production times in conjunction with longer service life and improved dimensional accuracy of the machined workpiece surfaces. The object is solved with the features of claim 1.
    On a main cutting edge is spaced a guide support strip (as a vibration damper), wherein the radius of the guide support bar is slightly less than that of the main cutting edge. Between the main cutting edge and guide support bar a small discharge space is provided. The chip space is arranged in the usual way, in the direction of rotation of the tool in front of the main cutting edge. Main cutting edge and guide support bar are arranged on a tooth. The guide support bar is not sharp, has a radius of curvature and thus provides no additional cutting edge.
    The main cutting edge is therefore designed for the chip volume, while the guide support bar deforms the raw material stock only.
    Advantageous embodiments are disclosed in the dependent claims. Thus, the milling tool preferably has a cylindrical base body with at least one, but preferably two or more teeth each with main cutting edge and guide support bar. 1/7 Austrian Patent Office AT 13 252 Ul 2013-09-15 [0010] The guide support strip resp. the tooth may be an integral part of an end mill or the like and / or implemented in individual inserts o. a., which are inserted into a tool body. The preferred diameter range of the milling tool is 0.2-35mm, but diameter in the meter range (eg up to 10m) is also possible. The guide support bar may be provided with freischniffen and / or interruptions for the purpose of friction reduction. Likewise, the teeth and / or the main cutting respectively. the guide support strips being uniformly and / or non-uniformly spaced apart, different helix angles can be used, and it is also possible that individual teeth are provided with only one main cutting edge (i.e., without a guide support strip). At least one guide support strip is arranged on a tooth, it also being possible for at least one tooth to be formed without a cutting edge and / or guide support strip.
    Furthermore, negative angular mass of the rake angle are possible.
    The high feed and the direct fine machining allow a shortening of the production time. The tool wear is less than with previous milling tools, which increases the service life. The higher dimensional accuracy requires fewer corrections, which positively influences production time and process reliability.
    The inventive milling tool is z for workpieces. As steel, cast iron, heat-resistant alloys such as titanium or other non-ferrous metals can be used advantageously in the finishing (eg., Circumferential milling, Abzeilen, Hemming, Trochoidalbearbeitung) as well as during roughing, respectively. HPC process in mechanical and apparatus engineering, in toolmaking, in the automotive industry, in aerospace or in medical technology.
    The invention, called Evocut includes, in addition to end mills and Torusfräser, conical or ball end mill and the like. It also extends to appropriately shaped inserts, interchangeable heads, saw blades o. A as well as comparable chip-removing tools.
    The invention will be described below in an embodiment with reference to a drawing. In the drawing: Fig. 1: an end view of the end mill Figure 2: a partial perspective view of same Figure 3: a guide support strip with freischliff.
    An end mill 1 made of standard tool steel, carbide, cermet, ceramic, diamond-coated or diamond-coated o. A. is cylindrical in its basic form and comprises a shaft with a clamping area and a working area with one end face. The work area comprises four with conventional twist angle lambda (A) (in the example 35 °, also deviating values are possible) on the circumference spaced apart teeth 2, each having a main cutting edge 3 and spaced therefrom a guide support bar 6. Between the teeth 2 a chip space 8 is formed in each case.
    The main cutting edge 3 comprises a rake surface, free surface and a cutting edge 5 as peripheral cutting edge. The diameter (passing through the tool axis 10) of the guide support bar 6 is slightly less than that of the cutting edge 5, d. H. depending on the desired feed Vf or cutting power is approximately 0.001mm to 2D / 3 smaller. The concrete choice is particularly dependent on the tool diameter and the tooth feed fz, where fz in turn depends on the side feed ae. The concrete contour of the guide support strip 6 is substantially dependent on the material to be machined (hard or soft) and the vibration reduction. For example, the guide support strip 6 may have a radius of 0.1 mm and an opening angle of 60 ° for hard materials. Form and design may also result in deviating radii and opening angles. It is essential that the shape and size of the guide support strip 6 (in extreme cases, even sharp edges) avoid a cutting action, respectively. not cutting.
    The achievable by the inventive guide support bar 6 vibration damping 2/7 Austrian Patent Office AT13 252U1 2013-09-15 increases z. B. the life and life of a router clearly. The existing during conventional milling cutter vibration during the machining process, which causes a faster cutting wear, is much lower or can even be avoided.
    Between the main cutting edge 3 and guide support bar 6 there is a concavely rounded or otherwise shaped relief space. 9
    The pitch angle alpha (a) between the main cutting edge 3 and guide support bar 6 is always greater than 0 ° and can be up to 359.99 ° for single-edged or single-handed training, while it is always smaller 180 ° in mehrschneidiger training.
    Further details of the router, which are common practice have not been separately mentioned. REFERENCE LIST: 1 End mill 2 Tooth 3 Main cutting edge 4 End cutting edge 5 Cutting edge 6 Guide support 7 Clearance / interruption 8 Chip space 9 Relief space 10 Tool axis D Diameter fz Tooth feed alpha (a) Angle of division lambda (A) Angle of twist 3/7
    权利要求:
    Claims (12)
    [1]
    Austrian Patent Office AT13 252U1 2013-09-15 Claims 1. Milling tool, in particular an end mill, torus milling cutter or the like for machining metallic and non-metallic workpieces with a tool shank and a work area, which runs at least one screw thread running in the circumference of the milling tool Milling surface on a tooth having a cutting edge (5), wherein the cutting edge (5) on the at least one tooth (2) is formed, characterized in that the cutting edge (5) spaced a guide support strip (6) is downstream, wherein the guide support bar (6) has a smaller diameter than the cutting edge (5).
    [2]
    2. Milling tool according to claim 1, characterized in that the difference in diameter between the cutting edge (5) and guide support strip (6) is approximately 0.001 to 2D / 3.
    [3]
    3. Milling tool according to claim 1 or 2, characterized in that between the cutting edge (5) and guide support strip (6) a concave or otherwise shaped relief space (9) is formed.
    [4]
    4. Milling tool according to at least one of claims 1 to 3, characterized in that at least one, but preferably two or more teeth (2) are provided.
    [5]
    5. Milling tool according to at least one of claims 1 to 4, characterized in that the tool diameter is 0.2-35mm, respectively. extends to the meter range.
    [6]
    6. Milling tool according to at least one of claims 1 to 5, characterized in that the guide support strip (6) with free grinding and / or interruptions (7) is provided, which are uniformly and / or unevenly spaced from each other.
    [7]
    7. Milling tool according to at least one of claims 1 to 6, characterized in that the teeth (2) and / or main cutting edges (3) and guide support strips (6) are uniformly and / or non-uniformly spaced from each other and / or different helix angles are provided.
    [8]
    8. Milling tool according to claim 7, characterized in that the pitch angle alpha (a) between the main cutting edge (3) and guide support strip (6) is greater than 0 ° and less than or equal to 359.99 °.
    [9]
    9. Milling tool according to claim 1, characterized in that the tooth (2) in a turning plate, a replaceable head, a saw blade, a Torusfräser, a conical cutter, a ball cutter or the like is implemented, and is applicable to comparable, chip-removing tools.
    [10]
    10. Milling tool according to at least one of claims 1 to 9, characterized in that the guide support strip (6) is rounded and not sharp or sharp, but not cutting.
    [11]
    11. Milling tool according to at least one of claims 1 to 10, characterized in that on a tooth (2) at least one guide support strip (6) is arranged.
    [12]
    12. Milling tool according to at least one of claims 1 to 11, characterized in that at least one tooth (2) is provided only with a main cutting edge (3). 3 sheets of drawings 4/7
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    同族专利:
    公开号 | 公开日
    CH705571A2|2013-03-28|
    DE202012008940U1|2013-06-19|
    CH705571B1|2015-03-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3456316A|1967-08-31|1969-07-22|Lockheed Aircraft Corp|Double-land end mills|
    DE29715192U1|1997-08-23|1997-12-04|Schuler Technoplan Gmbh & Co K|Milling tool|
    JP2002361511A|2001-06-11|2002-12-18|Honda Motor Co Ltd|Cutting blade arranging method of cutting tool|
    AT5969U1|2001-12-21|2003-02-25|Plansee Tizit Ag|MILLING TOOL|
    DE10325600B4|2003-06-06|2006-05-11|Franken GmbH + Co KG Fabrik für Präzisionswerkzeuge|End mills|
    IL162587A|2004-06-17|2008-12-29|Hanita Metal Works Ltd|Torsionally-stiff end mill|
    US7367754B1|2006-07-07|2008-05-06|Greenwood Mark L|Variable helix rotary cutting tool|
    DE202008000350U1|2008-01-09|2008-05-21|Hofmann & Vratny Ohg|Roughing cutter with bevelled cutting edge|
    WO2010079374A1|2009-01-12|2010-07-15|VILMÁNYI, Gábor|Milling tool for simultaneous roughing and finishing operations|DE102015116623A1|2015-09-30|2017-03-30|Haimer Gmbh|End mills|
    DE102015116624A1|2015-09-30|2017-03-30|Haimer Gmbh|End mills|
    DE202016102153U1|2016-04-22|2016-06-10|Daniel Gruber|milling tool|
    法律状态:
    2018-01-15| PC| Change of the owner|Owner name: SWISS TOOL TRADING HOLDING AG, CH Effective date: 20171213 Owner name: JETMIR BEJTULAI, CH Effective date: 20171213 |
    优先权:
    申请号 | 申请日 | 专利标题
    CH15552011A|CH705571B1|2011-09-20|2011-09-20|Milling tool.|
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