• 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:
    A drilling and thread cutting screw having a drill point including generally concave surfaces forming flutes therein with discrete obstructions formed on the concave surfaces to effectively break chips produced by cutting edges in the drill point.
    公开号:SU826973A3
    申请号:SU721837492
    申请日:1972-10-13
    公开日:1981-04-30
    发明作者:Антон Сигнатор Генри
    申请人:Иллинойс Тулз, Уоркс, Инк (Фирма)；
    IPC主号:
    专利说明:

    (St) SELF-CUTTING SCREW
    one
    The invention relates to machine parts, in particular fastening screws for connecting parts.
    A self-tapping screw for connecting parts is known, consisting of a drilling and thread-cutting section f.
    The use of such screws provides a sealed connection or mount that is resistant to corrosion. A drilling operation performed by such screws may form chips that are harmful to compaction or to resist corrosion, for example chips of relatively long length may curl upward during the drilling operation and fall under the bearing surface of the screw head.
    The purpose of the invention is to improve the performance properties of the screw by ensuring that chips are broken into small pieces during the drilling operation.
    This goal is achieved by the fact that on the front surface of the self-tapping screw, at some distance from the cutting edges, there are elements for guiding and breaking chips, each of which is made in the form of an ellipsoidal surface.
    At the same time, the elements for directing and breaking chips can be made either in the form of protrusions or in the form of cavities. ,
    FIG. 1 shows the proposed screw; in fig. 2 - the same with a repeat of 90 ° v in FIG. 3 - the same, bottom view; in fig. 4 - part of a screw with troughs for breaking and direction of the chips. ki .
    Sayunarezakkhoiy screw consists of a head 1 with a groove 2 and a rod containing a drill 3 and threadblock sticking .4 sections. The boring area 3 contains two chip grooves 5 and 6 and has a web 7. The surface of the grooves 5 and b intersects the conical surfaces 8 and 9
    The screw 0 forms two cutting edges 10 and 11. On the surface of the chip removal grooves 5 and b, there are ellipsoidal elements for breaking and direction of the stitch. They can be made either in the form of protrusions 12 and 13, or in the form of depressions 14 and 15. The projections 12 and 13 or depressions 14 and 15 are relatively small compared to the surface of the grooves
    0 5 and
    权利要求:
    Claims (3)
    [1]
    Claim
    1. Self-tapping screw. For joining parts, consisting of drilling and thread-cutting sections, characterized in that, in order to improve the performance of the screw, on its front surface at some distance from the cutting edges there are elements for guiding and breaking chips, each of which made in the form of an e ellipse surface.
    [2]
    2. The screw according to claim 1, with the fact that the elements for guiding and breaking chips are made in the form of protrusions.
    [3]
    3. The screw according to claim 1, otlichayu- ' υ u and th with the fact that the elements for guiding and breaking chips are made in the form of cavities.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU826973A3|1981-04-30|Self-cutting screw
    SE7612818L|1978-05-18|DRILL WITH FRIENDS
    US4693654A|1987-09-15|Self-drilling, self-tapping fastener
    KR900002882A|1990-03-23|Drawaway tip for thread cutting
    US5487434A|1996-01-30|Rock drill with conveying groove
    US3452625A|1969-07-01|Drill
    SE8303541L|1984-06-11|dental reamer
    ES281652U|1985-05-01|Slot screw.
    SE8103714L|1981-12-14|DRILLING SCREW
    CA1142000A|1983-03-01|Self-drilling, self-tapping fastener
    CA2301537A1|1999-03-11|Thread cutting bit
    SE8006556L|1981-03-22|TENSIONING SCREW
    KR920004069A|1992-03-27|Circular blade for cutting
    KR850001045A|1985-03-14|Twist Drill
    KR987000499A|1998-03-30|COUPLING FOR ANCHOR BARS
    JPS5590212A|1980-07-08|Drill
    SE8304896D0|1983-09-13|ANNUAL COLLAPSE DEVICE
    JPS61214909A|1986-09-24|Throw away tip
    JPS59118306A|1984-07-09|Ultrasonic deep hole drilling machine
    SU426826A1|1974-05-05|WOOD FOR WOOD
    JPS6352908A|1988-03-07|Twist drill
    KR890002826A|1989-04-11|Rotary magnetic head drum device
    JPH01204705A|1989-08-17|Drill
    SU1278133A1|1986-12-23|Round threading die
    SU117692A3|1957-11-30|Spiral drill
    同族专利:
    公开号 | 公开日
    DE2249706A1|1973-04-19|
    US3786713A|1974-01-22|
    AU461752B2|1975-06-05|
    DE2249706C2|1982-12-30|
    NL7213804A|1973-04-17|
    FR2157489A5|1973-06-01|
    GB1403787A|1975-08-28|
    AU4755872A|1974-04-26|
    BR7207100D0|1973-08-21|
    CA969008A|1975-06-10|
    PL83101B1|1975-12-31|
    IT968943B|1974-03-20|
    SE393168B|1977-05-02|
    HK8878A|1978-02-24|
    MY7800167A|1978-12-31|
    ZA727103B|1974-09-06|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1638230A|1925-12-28|1927-08-09|Delta Star Electric Co|Clamping means|
    US2322894A|1939-06-29|1943-06-29|Rustless Iron & Steel Corp|Twist drill|
    US2479730A|1944-05-10|1949-08-23|Lockheed Aircraft Corp|Screw|
    US2404048A|1944-08-05|1946-07-16|Franklin G Gepfert|Drill|
    BE524021A|1951-10-12|
    US2981127A|1959-09-23|1961-04-25|Norfolk Products Corp|Drill with chip remover|
    FR1491979A|1966-04-14|1967-08-11|Illinois Tool Works|Perforating screws|
    FR1536635A|1966-09-13|1968-08-16|Parker Kalon Corp|Rotary threaded fastener or screw|US4241639A|1977-11-14|1980-12-30|Illinois Tool Works Inc.|Method and apparatus for producing drill screws|
    US4125050A|1977-06-06|1978-11-14|J. Schwartzman Manufacturing & Supply Co.|Self-drilling screw|
    JPS61567Y2|1978-01-18|1986-01-10|
    JPS6128886Y2|1978-02-20|1986-08-27|
    US4295768A|1979-09-21|1981-10-20|Usm Corporation|Chip breaker screws|
    US4583898A|1979-11-26|1986-04-22|Illinois Tool Works Inc.|Drill screw and cutters for making same|
    CA1175688A|1979-11-26|1984-10-09|Illinois Tool Works Inc.|Drill screw and cutters for making same|
    DE3346704C2|1983-12-23|1987-06-25|Richter-System Gmbh & Co Kg, 6103 Griesheim, De|
    US4781506A|1984-10-05|1988-11-01|W. A. Deutsher Pty. Ltd.|Self-drilling screw|
    US4836730A|1985-01-17|1989-06-06|Emhart Industries, Inc.|Fastener|
    US4761844A|1986-03-17|1988-08-09|Turchan Manuel C|Combined hole making and threading tool|
    US5046905A|1989-07-06|1991-09-10|Emhart Inc.|Winged drill screw|
    US4963064A|1989-12-12|1990-10-16|Buell Industries, Inc.|Fabric fastener|
    US10125805B2|2015-04-21|2018-11-13|Sungwoo Hitech Co., Ltd|Rivet screw drill|
    CN111010869B|2018-08-07|2020-12-18|住友电工硬质合金株式会社|Drill bit|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US18957271A| true| 1971-10-15|1971-10-15|
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