• 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:
    Cutting insert (12) with a main cutting edge (28), a chip surface (26) and at least one coolant line (20), which is arranged on the top of the cutting insert (12). Here, the at least single coolant line (20) extends at least partially in the chip surface (26), in the direction of the main cutting edge (28), and its width increases in the direction of the main cutting edge (28). Figure 1
    公开号:SE1351419A1
    申请号:SE1351419
    申请日:2013-11-29
    公开日:2014-05-30
    发明作者:Igor Kaufmann；Anwar Sadat Mohideen Abdul；Franz Havrda
    申请人:Kennametal Inc；
    IPC主号:
    专利说明:

    It is preferred that the cutting insert has at least one secondary cutting edge, the coolant line being directed towards the at least one secondary cutting edge and constituting a secondary coolant line. The orientation of the coolant line towards a secondary cutting edge ensures that the secondary cutting edge - which is not directly adjacent to the point where the coolant arrives in the tool holder and when the main cutting edge - is cooled.
    According to a further embodiment, the chip surface has at least one chip breaker, which means that it is possible to influence the chip formation.
    As an example, the coolant line may be partly defined by the at least one chip breaker, in such a way that the latter combines the function as a line wall for conducting coolant with the function of a chip breaker. This makes it possible to provide a particularly space-saving device of chip breakers and coolant line on the chip surface.
    It is preferred that the at least one chip breaker has a part which is arranged substantially perpendicularly in relation to the main cutting edge and / or a part which is obliquely arranged in relation to the main cutting edge. As a result of this geometry, the chip breaker can simultaneously fulfill both its function as a delimitation of the coolant line and its chip breaking function.
    It is particularly preferred that the secondary coolant line be arranged on the side of the at least one chip breaker, which is furthest from the main cutting edge, so that at least a part of the stream of coolant is easily led into the secondary coolant line due to the height of the chip breaker.
    In a further variant of the embodiment, two chip switches are provided, the main coolant line extending between the two chip switches.
    This geometry makes it possible for a part of the coolant stream to flow directly and without obstruction to the main cutting edge.
    It is preferable to arrange two, between which the coolant line opens in the form of a cone, which means that the flow of chip-breaking coolant is widened.
    It is especially preferred that the distance between the chip deflectors be greater than the distance between the chip breakers, so that the entire stream of coolant does not flow into the main coolant line. In a further embodiment, the cutting insert has two secondary cutting edges and at least two secondary coolant lines, and the cutting tool can therefore take advantage of two cooled, secondary cutting edges.
    For example, the coolant lines have a common part, which makes it considerably easier to feed coolant to the different coolant lines.
    In one embodiment of the invention, the at least single coolant line is tubular, and the coolant therefore meets the least possible flow resistance.
    In another embodiment variant of the invention, the cutting insert is intended for a turning tool.
    The invention also relates to a cutting tool with a tool holder and a cutting insert. Here, the cutting insert is inserted into a recess in the tool holder, the coolant line being at least partially defined between the surface of the cutting insert and a surface of the recess in the tool holder. Mounting a cutting insert in the tool holder is thus made easier and can be performed without further alignment steps.
    Additional features and advantages of the invention will become apparent from the following description and from the accompanying drawings, to which reference is made. The drawings show: - Figure 1 a perspective view of the cutting insert according to the invention, - Figure 2 a plan view of the cutting insert shown in Figure 1, - Figure 3 a cross section through the cutting insert according to the invention along the plane lll - lll, and - Figure 4 the cutting insert shown in Figure 1 inserted into a tool holder.
    Figures 1 to 3 show a cutting insert 12, intended for a cutting tool 10. Here the cutting insert 12 can be divided into two parts: an insertion portion 16 for mounting the cutting insert in the cutting tool 10 and a cutting portion 18, with which the workpiece can be machined (not shown) to be processed.
    A coolant conduit 20 extends over substantially the entire length of cutting insert 12. An inlet region 22 for coolant conduit 20 is provided in the insertion portion 16 and extends along a central axis A of cutting insert 12. The inlet area 22 is surrounded by a U-shaped conduit wall 24, which is open towards the cutting area 18. On the side of the cutting area 18 facing the insertion portion 16, the conduit wall 24 - with the end of the ends in the U-shape - forms the chip deflectors 25, between which the coolant conduit 20 extends and conically opens into this area. The surface of the cutting area 18 is formed as a chip surface 26 and forms cutting edges at the meeting with the circumferential surfaces of the cutting insert 12. A main cutting edge 28 is formed in the edge between the chip surface 26 and the end surface 30 of the cutting insert 12. Two secondary cutting edges 32 are formed by the chip surface 26 and in each case one of the opposite side surfaces 34. The main cutting edge 28 forms an approximately right angle with each of the secondary cutting edges 32. However, the internal angles i, ß between the main cutting edge 28 and in each case one of the secondary cutting edges 32 are preferably less than 90 °. °.
    The chip surface 26 has two chip switches 36, which divide the chip surface 26 into three lines.
    The distance perpendicular to the central shaft A between the chip switches 36, which is perpendicular to the central axis A, is in this case less than the distance between the chip deflectors 25. A main coolant line 38 extends between the two chip switches 36, along the central axis A. coolant lines 40 in the direction of the secondary cutting edges 32 in front of the chip breakers 36. These are in each case delimited at least in part by a stop 25 and a chip breaker 36.
    The main coolant line 38 has been designed as a tubular recess 42, at least between the chip breakers 36 and is here delimited in part by relation to the main cutting edge. Thereafter, the main coolant line 38 rises sharply in portions of the chip switches 36, which are aligned perpendicular to the main cutting edge 28 and terminate as soon as its bottom reaches the same level as the main cutting edge 28.
    Each of the secondary coolant lines 40 runs at an angle to one of the secondary cutting edges 32. In the direction away from the central axis A, the secondary coolant lines 40 widen in the direction of the secondary cutting edges 32. This is accomplished by portions of the chip breakers 36, which delimit the secondary coolant lines 40 and are aligned obliquely with respect to the main cutting edge 28. In a manner similar to the main coolant line 38, the secondary coolant lines 40 rise slightly before reaching the respective secondary cutting edges 32, until their bottom has reached the same level as the secondary cutting edges 32.
    Figure 4 shows a cross section of a cutting tool 10, which consists of a cutting insert 12 inserted in a tool holder 44. For this purpose, the tool holder has a recess 46, which is delimited towards the top by a nose 48. A nozzle (not shown) , which may also be formed as a conduit or a hole, has been formed inside the tool holder 44 and opens inside the recess 46.
    When mounting, insert the cutting insert 12 into the recess 46 in the tool holder 44. The insertion portion 16 of the cutting insert 12 is then completely inside the recess 46, and the cutting area 18 protrudes in front of the nose 48. Here the underside of the nose 48 of the tool holder 44 forms together with the lead wall 24 inlet area 22 for coolant line 20. The fuse piece then opens out towards inlet area 22.
    To cool cutting insert 12, coolant flows out of the nozzle, into the inlet area 22 for coolant line 20. The coolant then flows through the opening between the clamping deflector arms 25 and thus hits the clamping switches 36.
    Since the opening between the clamping switches 36 is smaller than the opening between the clamping deflectors 25, the current of coolant is divided into three currents at this point. The amount of coolant passing through the opening between the clamping switches 36 is controlled by the main coolant line 38 to the main cutting edge 28, and can thereby cool the main cutting edge 28.
    As can be seen in the flow direction along the central axis A, the remainder of the coolant is led due to the chip switches 36 to the left or right and into the secondary coolant lines 40, through which the coolant is fed to the secondary cutting edges 32 and cools them. All three cutting edges of cutting insert 12 are therefore cooled in a targeted manner.
    权利要求:
    Claims (15)
    [1]
    Cutting insert (12) with a main cutting edge (28), a chip surface (26) and at least one coolant line (20), which has been arranged on the top of the cutting insert (12), the at least one coolant line (20) extending at least partially in the chip surface (26), in the direction of the main cutting edge (28), and wherein the width of the line increases in the direction of the main cutting edge (28).
    [2]
    Cutting insert according to Claim 1, characterized in that the coolant line (20) is (28) and forms a coolant line (38). focused on the main cutting edge main
    [3]
    Cutting insert according to one of the preceding claims, characterized in that the cutting insert (12) has at least one secondary cutting edge (32), the coolant line (20) being directed towards the at least one secondary cutting edge (32) and forming a secondary coolant line (40).
    [4]
    Cutting insert according to one of the preceding claims, characterized in that the chip surface (26) has at least one chip breaker (36).
    [5]
    Cutting insert according to Claim 4, characterized in that the coolant line (20) is partially delimited by the at least one chip breaker (36).
    [6]
    Cutting insert according to Claim 4 or 5, characterized in that the at least one chip breaker (36) has a part which is arranged substantially perpendicularly to the main cutting edge (28) and / or a part which is arranged obliquely in relation to the main cutting edge ( 28).
    [7]
    Cutting insert according to Claim 3 and one of Claims 4 to 6, characterized in that the secondary coolant line (40) is arranged on the side of the at least one chip breaker (36) which is furthest from the main cutting edge (28).
    [8]
    Cutting insert according to one of Claims 4 to 7, characterized in that two chip switches (36) are provided, the main coolant line (38) extending between the two chip switches (36).
    [9]
    Cutting insert according to one of Claims 4 to 8, characterized in that two chip deflectors (25) are provided, between which the coolant line (20) has a non-uniform opening. 10 15
    [10]
    Cutting insert according to Claims 8 and 9, characterized in that the distance between the chip deflectors (25) is greater than the distance between the chip breakers (36).
    [11]
    Cutting insert according to one of Claims 3 to 10, characterized in that the cutting insert (12) has two secondary cutting edges (32) and at least two secondary coolant lines (40).
    [12]
    Cutting insert according to Claim 11, characterized in that the coolant lines have a common part.
    [13]
    Cutting insert according to one of the preceding claims, characterized in that the at least one coolant line (20) is tubular.
    [14]
    Cutting insert according to one of the preceding claims, characterized in that the cutting insert (12) is intended for a turning tool.
    [15]
    Cutting tool (10) with a tool holder (44) and a cutting insert (12) according to one of the preceding claims, characterized in that the cutting insert (12) is inserted into a recess (46) in the tool holder (44), the coolant line (20) at least partially defined between the surface of the cutting insert (12) and a surface of the recess in the tool holder (44).
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    同族专利:
    公开号 | 公开日
    US20140147219A1|2014-05-29|
    CN103846463A|2014-06-11|
    US9168588B2|2015-10-27|
    IL228769D0|2014-03-31|
    DE102012111576A1|2014-06-05|
    KR20140070382A|2014-06-10|
    CN103846463B|2017-07-04|
    JP2014104579A|2014-06-09|
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    法律状态:
    2016-02-23| NAV| Patent application has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    DE102012111576.1A|DE102012111576A1|2012-11-29|2012-11-29|Cutting insert with coolant channel|
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