• 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 tool (1) for setting precious stones, with a clamping shank (3) and a drill head (5), the drill head (5) having a first drilling section (7) with a first maximum diameter (d 1) and a second Boring section (9) with a second maximum diameter (d 2), wherein the first drilling section (7) has at least one first cutting edge (11a) and the second drilling section (9) has at least one second cutting edge (11b) and wherein the second drilling section ( 9) has a curved section (9a) which tapers towards the first drilling section (7), and the at least one second cutting edge (11b) is formed on the curved section (9a), the maximum diameter (d 1) of the first drilling section (7) is smaller than the maximum diameter (d 2) of the second drilling section (9).
    公开号:CH715787A2
    申请号:CH00022/20
    申请日:2020-01-09
    公开日:2020-07-31
    发明作者:Busch Gert
    申请人:Busch & Co Gmbh & Co Kg；
    IPC主号:
    专利说明:

    The present invention relates to a tool for setting gemstones.
    In order to set and hold gemstones, for example, on pieces of jewelry, sockets are used. There are different types of settings for setting gemstones. Some cut gemstones, such as brilliant-cut gemstones, have a tip that extends relatively far down. One difficulty in setting such gemstones is thus creating sufficient space for the tip.
    In some versions, it has therefore been switched to first drill a hole with a first diameter in the material that will later be used to receive the tip. The stone seat, which has a larger diameter than the first hole, is then machined using another milling cutter. During the preparation of the stone seat, the previously made hole serves as a guide for the cutter. Then the stone can then be inserted into the receptacle of the mount thus formed.
    Several work steps are therefore necessary for forming the receptacle of the socket. It would therefore be desirable to simplify the creation of the setting for gemstones.
    It is therefore the object of the present invention to provide a tool that simplifies the setting of precious stones.
    The tool according to the invention is defined by the features of claim 1.
    The tool according to the invention for setting gemstones has a clamping shank and a drill head. The drill head has a first drilling section with a first maximum diameter d1 and a second drilling section with a second maximum diameter d2, the first drilling section having at least one first cutting edge and the second drilling section having at least one second cutting edge. The second drilling section has a curved section which tapers towards the first drilling section, and the at least one second cutting edge is formed in the curved section. The first maximum diameter d1 of the first drilling section is smaller than the second maximum diameter d2 of the second drilling section.
    The first drilling section is arranged on the side of the second drilling section facing away from the clamping shank.
    According to the invention, the curved section has a surface which is curved towards the first drilling section. In principle, the curvature of the curved section can also be formed by stringing together planar sections with different slopes. The surface can thus also have a non-continuously curved course.
    [0010] The curvature of the curved section can run in a radius or have an elliptical shape.
    Because the at least one second cutting edge is arranged in the curved section, the at least one second cutting edge has an arcuate course or a course corresponding to the course of the curved section. The tool according to the invention for setting precious stones enables both the drill hole for receiving the tip of a precious stone and the stone seat to be produced by means of one operation. The borehole for receiving the tip of the gem is drilled through the first drill section. The stone seat is milled out by means of the second drilling section.
    The tool according to the invention is a rotating tool.
    The tool according to the invention thus makes it possible that a setting for a gemstone can be created in a simple manner and faster, since two different work steps are combined into one work step and a change of tools, as is necessary in the prior art can be dispensed with.
    By forming the second drilling section with a curved section which has the at least one second cutting edge, the stone seat is formed with a curved wall on which the gemstone can advantageously jam when setting.
    A plurality of first and / or second cutting edges can be provided on the drill head of the tool according to the invention, for example 2 or 3 each.
    It is preferably provided that the first drilling section has a drill tip and the at least one first cutting edge is formed on the drill tip, the drill tip preferably having an angle between 100 ° and 120 °, particularly preferably 110 °. Such a configuration of the first drilling section enables advantageous drilling by means of the first drilling section. In the case of mounts in which the mount of the mount is designed as a blind hole and thus does not penetrate the entire material, such a drill bit is advantageous in order to create sufficient space for the tip of the stone.
    [0017] It is preferably provided that the at least one first cutting edge and the at least one second cutting edge have a common rake face. In other words: a jointly formed rake face extends from the first drilling section into the second drilling section. Such a configuration of the drill head of the tool according to the invention has been found to be particularly advantageous, since an advantageous chip removal takes place. In addition, the first and second cutting edges can be produced in an advantageous manner.
    The at least one first and the at least one second cutting edge can each be formed by a sharpened edge, which is each formed by a recess or a common recess. The recess can for example be a flute. The rake face can be formed in the common recess.
    [0019] It is preferably provided that a transition section is formed between the clamping shank and the drill head which tapers towards the drill head at least in one area. It can be provided that the rake face extends into the transition section. This enables an advantageous chip evacuation, so that the drill head can also penetrate completely or almost completely into the material.
    The tapering of the transition section enables the clamping shank to have, for example, a much larger diameter than the drill head, so that the clamping shank can be connected to existing drive machines and there is also greater stability. Furthermore, the taper enables a better view of the machining point, so that a user of the tool can better monitor the machining process.
    The transition section can have a taper angle between 3 ° and 5 °. The taper angle is preferably 4 °. The transition section thus has the shape of a truncated cone, the taper angle corresponding to the opening angle of the truncated cone. The transition section can also have a plurality of sections which, for example, extend at different taper angles. The transition section or a section of the transition section can also have a constant diameter. It can also be provided that the transition section or a section of the transition section has a curvature with a constant radius in the longitudinal direction of the tool. In this case, the transition section thus has the shape of a concave truncated cone, for example. The curvature can for example be a radius of 50 mm.
    It is preferably provided that the drill head has a groove on its end directed towards the clamping shank which delimits the second drilling section. The groove serves as a depth marking, so that when the tool according to the invention is used, there is an optical display for reaching the depth necessary for setting a gemstone, for example.
    In a preferred embodiment of the tool according to the invention, the ratio of the first diameter d1 of the first drilling section to the maximum diameter d2 of the second drilling section is at least 0.25 and at most 0.75. Preferably: d1 / d2 = 0.5.
    Such a ratio of the first diameter to the second diameter has proven to be particularly advantageous, in particular for setting brilliant-cut diamonds.
    In the tool according to the invention it can be provided that the first drilling section has a length L1, where: 0.4 wobei L1 / d1. The following preferably applies: 0.4 L1 / d1 0.7, particularly preferably 0.5 L1 / d1 0.55.
    The length L1 of the first drilling section is including the drilling tip. The configuration of the first drilling section with such a length L1 is advantageous for setting precious stones with a point, in particular with precious stones with a brilliant cut.
    The length L1 of the first drilling section can for example be between 40% and 50% of the total length Lg of the drilling head. The total length Lg of the drill head is, for example, the length from the drill tip of the first drill section to the groove or to the transition section.
    In a preferred embodiment of the tool according to the invention it is provided that the at least one first cutting edge extends at a first angle to a longitudinally extending center plane of the drill head and the at least one second cutting edge extends at a second angle to the center plane, the first angle is not equal to the second angle. For example, in the case of a drill head rotating counterclockwise in plan view of the drill head, the first angle of the first cutting edge to the central plane, measured in the mathematically negative sense, can be smaller than the correspondingly measured second angle of the second cutting edge, with none of the cutting edges running in the central plane and the Midplane does not run between the first and second cutting edges. It has been found that with a drill head with cutting edges at different angles, improved smoothness can be achieved during drilling.
    In the context of the invention, a length is understood to mean an extent which extends in the longitudinal direction of the tool and thus in the direction of the central axis of the tool. In the context of the invention, the maximum diameter is understood to mean the maximum extent of the drilling section in the direction of the diameter, i.e. understood the nominal diameter of the corresponding drilling section, and thus the diameter of the drilling section without taking into account the recess of the corresponding cutting edge. Using the nominal diameter, the diameter of the hole produced with the corresponding drilling section can be estimated.
    It is preferably provided that the at least one first cutting edge and / or the at least one second cutting edge have at least one interruption. The interruption causes the chip removed by the cutting edge to break.
    [0031] It is preferably provided that the rake face extends at an angle between 0 ° and 20 ° to a central axis of the drill head. The rake face preferably runs at an angle between 4 ° and 6 °, for example at an angle of 5 °, to the central axis of the drill head. Such an arrangement of the cutting edges has proven to be particularly advantageous for creating the recordings of the mounts.
    In a preferred embodiment of the tool according to the invention it is provided that the at least one first cutting edge and / or the at least one second cutting edge have a bevel. This can increase the stability of the cutting edge.
    In a preferred embodiment, the tool consists of steel or a hard metal. The tool according to the invention can also have a coating that is applied at least in the area of the drill head. The coating can consist of a metal, a metal alloy or a carbon layer. For example, the coating can be a titanium nitride layer or a DLC layer (diamond-like carbon).
    The invention also relates to the use of a tool according to the invention for setting precious stones.
    In the following, the invention is explained in more detail with reference to the following figures.
    Show it<tb> Fig. 1 <SEP> a first embodiment of a tool according to the invention for setting precious stones,<tb> Fig. 2 <SEP> a second embodiment of the tool according to the invention for setting precious stones,<tb> Fig. 3 <SEP> a third embodiment of a tool according to the invention for setting precious stones and<tb> Fig. 4 <SEP> a plan view of the drill head of the embodiment shown in FIG.
    In Fig. 1, a first embodiment of a tool 1 according to the invention for setting precious stones is shown schematically in a side view.
    The tool 1 according to the invention has a clamping shank 3 and a drill head 5. The drill head 5 consists of a first drill section 7 and a second drill section 9. The first drill section 7 has a drill bit 7a. The drill tip 7a extends at an angle α, which is 120 °, for example. The second drilling section 9 has an arched section 9 a, which tapers towards the first drilling section 7.
    The first drilling section 7 has a first cutting edge 11a which is arranged on the drilling tip. and the second drilling section 9 has a second cutting edge 11b which is arranged on the curved section 9a. The second cutting edge 11b has an arcuate course.
    The first cutting edge 11a and the second cutting edge 11b have a common rake face 11c. When using the tool 1 according to the invention, chips can be removed via the rake face 11c.
    Between the clamping shank 3 and the drill head 5, a transition section 13 is formed, which tapers in a first region 13a and extends in a second region 13b with a constant diameter. The rake face 11c extends into the transition section 13, whereby the chip removal is simplified.
    The curved section 9a has a curvature with a constant radius. In the exemplary embodiment shown in FIG. 1, the second drilling section essentially has the shape of a spherical layer.
    The first drilling section 7 has a first maximum diameter d1 which is smaller than the maximum diameter d2 of the second drilling section. The maximum diameter of the first or second drilling section is understood to mean the maximum extension in a direction transverse to a central axis 17 of the drilling head 5. In the embodiment shown in FIG. 1, the maximum diameter d2 of the second drilling section 9 corresponds to the diameter of the second region 13b of the transition section 13.
    For the ratio of the first diameter d1 to the maximum diameter D2, in the embodiment shown in FIG. 1, the following can apply: d1 / d2 = 1/2.
    The first drilling section 7 also has a length L1, the length extending from the drilling tip 7a to the second drilling section 9.
    The drill head 5 can have an overall length LG. The total length LG is measured from the drill tip to the area of the second drill section 9 in which the second drill section 9 reaches the maximum diameter d2. The length L1 can for example be a third of the total length of the drill head.
    The rake face 11c is arranged to the central axis 17 of the drill head 5 at an angle δ which is, for example, 5 °.
    In Fig. 2, a second embodiment of the tool 1 according to the invention for setting precious stones is shown schematically in a side view.
    The exemplary embodiment of the tool 1 according to the invention shown in FIG. 2 differs from the exemplary embodiment in FIG. 1 in that the second drilling section 9 has a spherical ring shape. The second drilling section 9 tapers on the one hand with the curved section 9a towards the first drilling section 7 and on the other hand towards the transition section 13, the second drilling section 9 having a constant radius.
    The shape of the second drilling section 9 shown in FIG. 2 has particular advantages in terms of chip removal. In addition, an advantageous view of the work area is given, since a user can see exactly how deep the tool has penetrated into the material.
    In the exemplary embodiment shown in FIG. 2, the transition section 13 tapers from the shank 3 to the drill head 5, the transition section 13 having a curvature with a constant radius R in the longitudinal direction of the tool. In other words: the transition section 13 has the shape of a concave truncated cone. The radius can be 50 mm, for example.
    In the exemplary embodiment shown in FIG. 2, the first drilling section has a length L1 which is, for example, 0.3 times the total length LG of the drilling head 5.
    The further relationships and features of the tool 1 shown in FIG. 2 correspond to the tool 1 according to the invention shown in FIG. 1.
    In Fig. 3, a second embodiment of the tool 1 according to the invention for setting gemstones is shown schematically in a side view.
    The embodiment shown in Fig. 3 of the tool 1 according to the invention differs from the embodiment of Figure 1 in that the second drilling section 9 on the one hand with the curved section 9a to the first drilling section 7 and on the other hand with a frustoconical course to the Transition section 13 tapers out.
    The tool shown in Figure 3 also has a drill head 5 with two first cutting edges 11a and two second cutting edges 11b.
    In this exemplary embodiment, the rake faces 11c extend into the region of the second drilling section 9 tapering towards the transition section 13 and are arranged at an angle δ to the central axis 17 of the drill head 5, which is, for example, 20 °.
    In the exemplary embodiment shown in FIG. 3, the transition section 13 tapers from the shaft 3 to the drill head 5, the transition section 13 having a curvature with a constant radius R in a first region 13a in the longitudinal direction of the tool. In other words: the first region 13a of the transition section 13 has the shape of a concave truncated cone. The radius can be 10 mm, for example. In a second area 13b, the transition section 13 extends with a constant diameter.
    The further relationships and features of the tool 1 shown in FIG. 3 correspond to the tool 1 according to the invention shown in FIG. 1.
    In FIG. 4, the drill head of the exemplary embodiment of the tool 1 according to the invention shown in FIG. 3 is shown schematically in a top view.
    As can be seen from FIG. 4, the first cutting edges 11a each extend at a first angle β1 to a central plane 19 which extends through the central axis 17. The second cutting edges 11b each extend at a second angle β2 to the central plane 19. The drill head rotates, as is indicated in FIG. 4 by an arrow, counterclockwise in a plan view of the drill head. The first angle β1 of the first cutting edge 11a to the central plane 19, measured in the mathematically negative sense, is smaller than the correspondingly measured second angle β2 of the second cutting edge 11b, none of the cutting edges 11a, 11b running in the central plane 19 and the central plane not between the first and the Cutting edge 11a, 11b runs. It has been found that with a drill head 5 with cutting edges 11a, 11b at different angles β1, β2, improved smoothness can be achieved during drilling. As a result of cutting 11a, 11b at different angles β1, β2, the rake face 11c of a pair of first and second cutting edges 11a, 11b is not planar, but has two partial surfaces which also run at different angles. The rake face 11c thus has a kink in this case.
    The tool 1 according to the invention can for example consist of steel or hard metal.
    By means of the tool 1 according to the invention, it is possible in an advantageous manner to create a receptacle for a gemstone in a setting, wherein the receptacle can essentially be produced in one work step.
    权利要求:
    Claims (12)
    [1]
    1. Tool (1) for setting precious stones, with a clamping shank (3) and a drill head (5), the drill head (5) having a first drilling section (7) with a first maximum diameter d1 and a second drilling section (9) with a second maximum diameter d2, wherein the first drilling section (7) has at least one first cutting edge (11a) and the second drilling section (9) has at least one second cutting edge (11b) and wherein the second drilling section (9) has a curved section (9a), which tapers towards the first drilling section (7), and the at least one second cutting edge (11b) is formed on the curved section (9a), the maximum diameter d1 of the first drilling section (7) being smaller than the maximum diameter d2 of the second drilling section (9).
    [2]
    2. Tool according to claim 1, characterized in that the first drilling section (7) has a drilling tip (7a) and the at least one first cutting edge (11a) is formed on the drilling tip (7a).
    [3]
    3. Tool according to claim 2, characterized in that the drill tip (7a) has an angle between 100 ° and 120 °, preferably 110 °.
    [4]
    4. Tool according to one of claims 1 to 3, characterized in that a transition section (13) is formed between the clamping shank (3) and the drill head (5) which tapers towards the drill head (5).
    [5]
    5. Tool according to claim 4, characterized in that the transition section (13) or a section of the transition section (13) has a taper angle between 3 ° and 5 ° and / or that the transition section (13) or a section of the transition section (13) has a curvature with a constant radius in the longitudinal direction of the tool and / or that the transition section (13) or a section of the transition section (13) has a constant diameter.
    [6]
    6. Tool according to one of claims 1 to 5, characterized in that the drill head (5) has a groove on its end facing the clamping shank (3) which delimits the second drilling section (9).
    [7]
    7. Tool according to one of claims 1 to 6, characterized in that the following applies to the ratio of the diameter d1 of the first drilling section (7) to the maximum diameter d2 of the second drilling section (9): 0.25 ≤ d1 / d2 ≤ 0.75, preferably d1 / d2 = 0.5.
    [8]
    8. Tool according to one of claims 1 to 7, characterized in that the first drilling section (7) has a length L1, where: 0.4 L1 / d1 0.7, preferably 0.5 L1 / d1 0 , 55.
    [9]
    9. Tool according to one of claims 1 to 8, characterized in that the at least one first cutting edge (11a) and / or the at least one second cutting edge (11b) have at least one interruption.
    [10]
    10. Tool according to one of claims 1 to 9, characterized in that the at least one first cutting edge (11a) extends a longitudinally extending center plane (19) of the drill head (5) at a first angle (β1) and the at least one second The cutting edge (11b) runs at a second angle (β1) to the central plane (19), the first angle (β1) not being equal to the second angle (β2).
    [11]
    11. Tool according to one of claims 1 to 10, characterized in that the at least one first cutting edge (11a) and / or the at least one second cutting edge (11b) have a bevel.
    [12]
    12. Tool according to one of claims 1 to 11, consisting of steel or a hard metal and / or with a coating of a metal or a metal alloy or a coating which is designed as a carbon layer, the coating at least in the area of the drill head (5 ) is applied.
    类似技术:
    公开号 | 公开日 | 专利标题
    DE3039632C2|1982-12-16|Rotary bit for deep drilling
    DE19780282B3|2012-09-06|Self-supporting expansion drill
    CH678834A5|1991-11-15|
    CH688223A5|1997-06-30|Hollow needle for an ophthalmic instrument.
    DE19810192A1|1999-09-16|Drilling tool
    DE2560621C3|1990-05-10|
    DE602004005828T2|2008-01-10|CUTTING BODY
    DE19903037C2|2003-12-04|Cutting tool with means for chip control
    DE112008002220T5|2010-08-26|Angular fine hole machining method
    DE4434025C2|1996-10-10|Process for drilling brittle materials, drill for carrying out the process and use of the drill
    CH715787A2|2020-07-31|Tool for setting precious stones.
    DE2813850A1|1978-10-19|DRILLING CHISEL FOR EARTH AND ROCK DRILLINGS
    AT502061A1|2007-01-15|RUBBER WITH CUTTING PLATE
    AT391646B|1990-11-12|DRILL
    DE102019200496A1|2020-07-16|Tool for setting gemstones
    DE102011000844A1|2012-08-23|Diamond hole saw with center drill and stop
    WO2007025679A1|2007-03-08|Tool for machining workpieces
    DE102005005213A1|2006-08-17|Finishing tool for boring surfaces has swarf-breaker structures able to be produced by swarf-free process, and with defined spacing from finished cutters
    DE102017105181A1|2018-09-13|Tool, in particular countersinking tool and use thereof
    DE102015100952B4|2019-05-02|Dental instrument for the preparation of teeth, in particular tooth root canals, and pin for use in a proposed borehole, in particular a borehole produced with a dental instrument according to the invention
    DE4408335C2|2003-05-28|deburring
    DE19652208A1|1997-06-26|Drill bit for drilling anchoring points in rock
    EP2789418B1|2017-06-07|Cutting part for a drill
    DE202015100297U1|2015-03-23|Dental instrument for the preparation of teeth, in particular tooth root canals and pin for use in a designated borehole, in particular a borehole produced with a dental instrument according to the invention
    DE102015100946A1|2016-07-28|Dental instrument for the preparation of teeth, in particular tooth root canals and pin for use in a designated borehole, in particular a borehole produced with a dental instrument according to the invention
    同族专利:
    公开号 | 公开日
    DE102019200495A1|2020-07-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE102010012963A1|2010-03-25|2011-09-29|Rolf Klenk Gmbh & Co Kg|drilling|
    CN105965071B|2016-06-06|2018-02-27|江苏大学|A kind of overall Circular Nose Cutting Edge subland drill with control of burr form|CN113319310A|2021-06-21|2021-08-31|深圳市誉和钻石工具有限公司|Ultra-precise concave nail bead cutter and processing technology thereof|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102019200495.4A|DE102019200495A1|2019-01-16|2019-01-16|Tool for setting gemstones|
    [返回顶部]