WO2008092386A1 - Step drill with a spiral-form groove - Google Patents

Step drill with a spiral-form groove Download PDF

Info

Publication number
WO2008092386A1
WO2008092386A1 PCT/CN2008/000221 CN2008000221W WO2008092386A1 WO 2008092386 A1 WO2008092386 A1 WO 2008092386A1 CN 2008000221 W CN2008000221 W CN 2008000221W WO 2008092386 A1 WO2008092386 A1 WO 2008092386A1
Authority
WO
WIPO (PCT)
Prior art keywords
groove
drill
pagoda
diameter
shank
Prior art date
Application number
PCT/CN2008/000221
Other languages
French (fr)
Chinese (zh)
Inventor
Qi Zhang
Original Assignee
Qi Zhang
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qi Zhang filed Critical Qi Zhang
Publication of WO2008092386A1 publication Critical patent/WO2008092386A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/009—Stepped drills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/04—Angles, e.g. cutting angles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/40—Flutes, i.e. chip conveying grooves
    • B23B2251/408—Spiral grooves

Definitions

  • the invention relates to a single-slot pagoda drill, belonging to the technical field of hardware tools.
  • 3 ⁇ 4 ⁇ interest 3 ⁇ 4 hole machining needs to be completed by the corresponding processing equipment and tools.
  • the corresponding drill bit is selected according to different apertures.
  • Different hole diameters are used to replace the corresponding drills, and the labor intensity is high, which is not conducive to improving production efficiency or adapting to the requirements of modern advanced processing equipment.
  • scientific and technological personnel have developed a pagoda drill, also called step drill.
  • the drill has a plurality of diameters integrated into one body, and the diameters are sequentially increased from the front end portion, and the diameters are spaced apart by about 5 mm, and a single straight groove is formed on the outer wall in the same direction as the axis.
  • the pagoda drilled in this structure is processed in a thin plate.
  • the existing chip removal groove on the pagoda drill is a single straight groove, and the groove bottom of the straight groove has an angle. Straight groove and its angled groove bottom are not conducive to chipping, and the joint faces of adjacent diameters are straight, straight The edge formed with the straight groove edge is not ideal, which affects the improvement of the processing quality.
  • the object of the present invention is to solve the disadvantage that the straight groove existing in the existing single straight groove pagoda drill is not suitable for the chipping, the edge formed by the straight edge and the straight groove edge is not ideal, and the one which is favorable for the chip removal and the processing quality is improved.
  • Single-slot pagoda drill is not suitable for the chipping, the edge formed by the straight edge and the straight groove edge is not ideal, and the one which is favorable for the chip removal and the processing quality is improved.
  • the utility model relates to a single-slot pagoda drill, which comprises a drill body and a drill handle portion integrated therewith, characterized in that the single groove on the drill body is a spiral groove from the rear end to the front end of the drill body, and the joint surface of the adjacent diameter is concave. Curved surface.
  • the groove bottom of the spiral groove is a parabolic structure;
  • the radius of the concave curved surface between adjacent diameters is 1-3 mm;
  • the joint surface of the adjacent diameter may also be a bevel, and the angle between the bevel and the diameter of one side is 43-47 degrees.
  • the shank is a round shank, or a triangular shank, or a hex shank with a locating groove.
  • the invention is an improvement of the existing single straight groove pagoda drilling structure, and the single straight groove drilled by the existing pagoda is designed as a spiral groove, and the bottom of the groove is a parabolic structure, and the joint surface of the adjacent diameter is concave curved surface;
  • the joint surface of the adjacent diameter may also be a sloped surface, and the angle between the slope and the diameter of one side is 43-47 degrees.
  • the structure has a sharper edge, and the material scraps generated during the processing are easily withdrawn in the spiral direction, which is beneficial to improve the processing quality.
  • the invention has strong applicability and can replace the existing single straight groove pagoda drill. .
  • Figure 1 is a schematic structural view of the present invention
  • Figure 2 is a schematic enlarged view of the portion A of Figure 1;
  • Figure 3 is a schematic bottom view of the present invention.
  • the invention consists of a drill body 1 and a shank 5 integral therewith.
  • the single groove on the drill body 1 is a spiral groove 2 from the rear end to the front end of the drill body 1, adjacent
  • the joint face 3 of the diameter is concave curved surface
  • the groove bottom of the spiral groove 2 is a paraboloid 4 structure
  • the radius of the concave curved surface between adjacent diameters is 1 - 3 mm
  • the joint surface 3 of the adjacent diameter may also be a sloped surface, the inclined surface and
  • the angle of one side diameter is 43-47 degrees.
  • the shank portion 5 is a round shank, or a triangular shank, or a hex shank having a positioning groove.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

A step drill includes a body with an integrally formed handle, in which a spiral-form groove extends from the end to the front of the body, and the groove bottom is a paraboloidal structure. The combination surface of adjacent diameter is concave arc surface, or the combination surface of adjacent diameter is inclined surface, and the angle between the diameter of one side and the inclined surface is 43-47 degree.

Description

单槽宝塔钻 技术领域  Single groove pagoda drill
本发明涉及一种单槽宝塔钻， 属于五金工具技术领域。  The invention relates to a single-slot pagoda drill, belonging to the technical field of hardware tools.
¾ ^息; ¾ 孔洞的机械加工都需要通过相应的加工设备和工具来完成， 传统 的孔洞加工中， 根据不同的孔径选用更换相应的钻头， 对于一些薄板 工件， 往往有多种孔径需要加工， 采用不同的孔径选用更换相应钻头 费工费时、 劳动强度高， 既不利于提高生产效率， 也不适应现代先进 加工设备的要求， 近几年来科技人员开发了一种宝塔钻， 也称为阶梯 钻， 这种钻头集多种直径为一体， 自前端部开始直径依次增大， 各直 径间距在 5mm左右,在其外壁加工有与其轴线同向的单直槽，这种结构 的宝塔钻在加工薄板上不同直径的孔洞时就不再需要更换钻头， 有利 于提高生产效率和满足现代先进加工设备的要求， 但现有的宝塔钻上 的退屑槽是单直槽， 直槽的槽底具有角度， 直槽及其具有角度的槽底 不利于退屑， 而且相邻直径的结合面呈直边， 直边与直槽边形成的刃 口不够理想， 影响加工质量的提高。  3⁄4 ^ interest; 3⁄4 hole machining needs to be completed by the corresponding processing equipment and tools. In the traditional hole machining, the corresponding drill bit is selected according to different apertures. For some thin plate workpieces, there are often multiple apertures to be processed. Different hole diameters are used to replace the corresponding drills, and the labor intensity is high, which is not conducive to improving production efficiency or adapting to the requirements of modern advanced processing equipment. In recent years, scientific and technological personnel have developed a pagoda drill, also called step drill. The drill has a plurality of diameters integrated into one body, and the diameters are sequentially increased from the front end portion, and the diameters are spaced apart by about 5 mm, and a single straight groove is formed on the outer wall in the same direction as the axis. The pagoda drilled in this structure is processed in a thin plate. When the holes of different diameters are used, it is no longer necessary to change the drill bit, which is beneficial to improve the production efficiency and meet the requirements of modern advanced processing equipment. However, the existing chip removal groove on the pagoda drill is a single straight groove, and the groove bottom of the straight groove has an angle. Straight groove and its angled groove bottom are not conducive to chipping, and the joint faces of adjacent diameters are straight, straight The edge formed with the straight groove edge is not ideal, which affects the improvement of the processing quality.
发明内容 Summary of the invention
本发明的目的是针对现有单直槽宝塔钻存在的直槽不利于退屑、 直边与直槽边形成的刃口不够理想的缺点， 提供有利于退屑和有利于 提高加工质量的一种单槽宝塔钻。 ，  The object of the present invention is to solve the disadvantage that the straight groove existing in the existing single straight groove pagoda drill is not suitable for the chipping, the edge formed by the straight edge and the straight groove edge is not ideal, and the one which is favorable for the chip removal and the processing quality is improved. Single-slot pagoda drill. ,
本发明的目的是通过以下技术方案实现的：  The object of the invention is achieved by the following technical solutions:
一种单槽宝塔钻， 包括钻体和与其为一体的钻柄部， 其特征是所 述钻体上的单槽为自钻体后端至前端的螺旋槽， 相邻直径的结合面呈 凹弧面。  The utility model relates to a single-slot pagoda drill, which comprises a drill body and a drill handle portion integrated therewith, characterized in that the single groove on the drill body is a spiral groove from the rear end to the front end of the drill body, and the joint surface of the adjacent diameter is concave. Curved surface.
螺旋槽的槽底为抛物面结构； 相邻直径间的凹弧面的半径为 1 -3mm; The groove bottom of the spiral groove is a parabolic structure; The radius of the concave curved surface between adjacent diameters is 1-3 mm;
相邻直径的结合面亦可为斜面， 斜面与一侧直径的夹角为 43-47 度。  The joint surface of the adjacent diameter may also be a bevel, and the angle between the bevel and the diameter of one side is 43-47 degrees.
钻柄部是圆柄， 或是三角柄， 或是具有定位槽的六角柄。  The shank is a round shank, or a triangular shank, or a hex shank with a locating groove.
本发明是对现有单直槽宝塔钻结构的改进， 通过将现有宝塔钻上 的单直槽设计为螺旋槽， 且槽底为抛物面结构， 相邻直径的结合面呈 凹弧面； 相邻直径的结合面亦可为斜面， 斜面与一侧直径的夹角为 43-47度。 这种结构形成的刃口更锋利， 加工过程中产生的材料屑沬 沿螺旋方向很容易退出， 有利于提高加工质量， 本发明具有很强的适 用性， 可替代现有的单直槽宝塔钻。  The invention is an improvement of the existing single straight groove pagoda drilling structure, and the single straight groove drilled by the existing pagoda is designed as a spiral groove, and the bottom of the groove is a parabolic structure, and the joint surface of the adjacent diameter is concave curved surface; The joint surface of the adjacent diameter may also be a sloped surface, and the angle between the slope and the diameter of one side is 43-47 degrees. The structure has a sharper edge, and the material scraps generated during the processing are easily withdrawn in the spiral direction, which is beneficial to improve the processing quality. The invention has strong applicability and can replace the existing single straight groove pagoda drill. .
附图说明 DRAWINGS
图 1 为本发明结构示意图；  Figure 1 is a schematic structural view of the present invention;
图 2为图 1 A部的放大结构示意图；  Figure 2 is a schematic enlarged view of the portion A of Figure 1;
图 3 为本发明仰视结构示意图；  Figure 3 is a schematic bottom view of the present invention;
图中， 1、 钻体， 2、 螺旋槽， 3、 结合面， 4、 抛物面， 5、 柄部。 具体实施方式  In the figure, 1, the drill body, 2, the spiral groove, 3, the joint surface, 4, the paraboloid, 5, the handle. detailed description
结合附图和实施例进一步说明本发明， 本发明由钻体 1和与其为 一体的柄部 5构成， 钻体 1上的单槽为自钻体 1后端至前端的螺旋槽 2， 相邻直径的结合面 3呈凹弧面， 螺旋槽 2的槽底为抛物面 4结构； 相邻直径间的凹弧面的半径为 1 - 3mm; 相邻直径的结合面 3亦可为斜 面， 斜面与一侧直径的夹角为 43-47度。 钻柄部 5是圆柄， 或是三角 柄， 或是具有定位槽的六角柄。  The invention will be further described with reference to the accompanying drawings and embodiments. The invention consists of a drill body 1 and a shank 5 integral therewith. The single groove on the drill body 1 is a spiral groove 2 from the rear end to the front end of the drill body 1, adjacent The joint face 3 of the diameter is concave curved surface, the groove bottom of the spiral groove 2 is a paraboloid 4 structure; the radius of the concave curved surface between adjacent diameters is 1 - 3 mm; the joint surface 3 of the adjacent diameter may also be a sloped surface, the inclined surface and The angle of one side diameter is 43-47 degrees. The shank portion 5 is a round shank, or a triangular shank, or a hex shank having a positioning groove.

Claims

权利要求 Rights request
1、一种单槽宝塔钻， 包括钻体和与其为一体的钻柄部， 其特征是 所述钻体上的单槽为自钻体后端至前端的螺旋槽， 相邻直径的结合面 呈凹弧面。  A single-slot pagoda drill comprising a drill body and a shank portion integral therewith, wherein the single groove on the drill body is a spiral groove from the rear end to the front end of the drill body, and the joint surface of the adjacent diameter It has a concave curved surface.
2、根据权利要求 1所述的单槽宝塔钻，其特征是螺旋槽的槽底为 抛物面结构。  2. A single-slot pagoda drill according to claim 1 wherein the groove bottom of the spiral groove is a parabolic structure.
3、根据权利要求 1所述的单槽宝塔钻，其特征是相邻直径间的凹 弧面的半径为 1-3mm。  A single-slot pagoda drill according to claim 1, wherein the radius of the concave surface between adjacent diameters is 1-3 mm.
4、根据权利要求 1所述的单槽宝塔钻，其特征是相邻直径的结合 面亦可为斜面， 斜面与一侧直径的夹角为 43-47° 。  A single-slot pagoda drill according to claim 1, wherein the joint surface of the adjacent diameter is also a bevel, and the angle between the bevel and the diameter of one side is 43-47.
5、 根据权利要求 1所述的单槽宝塔钻， 其特征是钻柄部是圆柄， 或是三角柄， 或是具有定位槽的六角柄。 5. The single-slot pagoda drill according to claim 1, wherein the shank portion is a round shank, or a triangular shank, or a hex shank having a positioning groove.
PCT/CN2008/000221 2007-01-29 2008-01-29 Step drill with a spiral-form groove WO2008092386A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200710019664.2 2007-01-29
CNA2007100196642A CN101007358A (en) 2007-01-29 2007-01-29 Single-groove high speed steel fully ground step drill

Publications (1)

Publication Number Publication Date
WO2008092386A1 true WO2008092386A1 (en) 2008-08-07

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WO (1) WO2008092386A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120251256A1 (en) * 2011-04-04 2012-10-04 GM Global Technology Operations LLC Cutting tool for control of surface roughness
US9731358B2 (en) 2013-06-06 2017-08-15 Milwaukee Electric Tool Corporation Step drill bit
WO2020002581A1 (en) 2018-06-28 2020-01-02 Ruko Gmbh Praezisionswerkzeuge Step drill
WO2020115301A1 (en) * 2018-12-06 2020-06-11 Ruko Gmbh Praezisionswerkzeuge Step drill
US11007583B2 (en) * 2016-02-14 2021-05-18 Hongjia Wang Twist drill
US11273501B2 (en) 2018-04-26 2022-03-15 Milwaukee Electric Tool Corporation Step drill bit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5360805B2 (en) * 2008-10-30 2013-12-04 日立ビアメカニクス株式会社 Tool positioning device

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JPH07156007A (en) * 1993-12-06 1995-06-20 Nippon Light Metal Co Ltd Method for drilling conical drill and composite panel
DE19526686A1 (en) * 1994-09-09 1996-03-14 Duerr Praezisionswerkzeuge Gmb Multi=step drill
JPH11239907A (en) * 1998-02-23 1999-09-07 Omi Kogyo Co Ltd Step drill and manufacture of step drill
DE20303656U1 (en) * 2003-03-06 2003-05-08 Quanz, Reiner, 42859 Remscheid Conical drill bit adjacent step-graduated sections linked by conical transition zones
CN2623387Y (en) * 2003-04-26 2004-07-07 嘉兴恒锋工具有限公司 Iso-helix angle step drill
CN2629882Y (en) * 2003-07-24 2004-08-04 谢林祥 Drilling bit
DE20318529U1 (en) * 2003-11-29 2005-04-07 Ruko Gmbh Praez Swerkzeuge Cone drill for creation of holes with different diameters, comprising specific angle at transitional cutting edges
US6890133B2 (en) * 2002-10-18 2005-05-10 Irwin Industrial Tool Company Stepped drill bit having split tip
CN1640596A (en) * 2004-01-16 2005-07-20 旭荣研磨加工株式会社 Drill bit for forming stepped hole
CN2822839Y (en) * 2005-08-08 2006-10-04 上海锐晟五金工具有限公司 Composition type step drilling machine

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07156007A (en) * 1993-12-06 1995-06-20 Nippon Light Metal Co Ltd Method for drilling conical drill and composite panel
DE19526686A1 (en) * 1994-09-09 1996-03-14 Duerr Praezisionswerkzeuge Gmb Multi=step drill
JPH11239907A (en) * 1998-02-23 1999-09-07 Omi Kogyo Co Ltd Step drill and manufacture of step drill
US6890133B2 (en) * 2002-10-18 2005-05-10 Irwin Industrial Tool Company Stepped drill bit having split tip
DE20303656U1 (en) * 2003-03-06 2003-05-08 Quanz, Reiner, 42859 Remscheid Conical drill bit adjacent step-graduated sections linked by conical transition zones
CN2623387Y (en) * 2003-04-26 2004-07-07 嘉兴恒锋工具有限公司 Iso-helix angle step drill
CN2629882Y (en) * 2003-07-24 2004-08-04 谢林祥 Drilling bit
DE20318529U1 (en) * 2003-11-29 2005-04-07 Ruko Gmbh Praez Swerkzeuge Cone drill for creation of holes with different diameters, comprising specific angle at transitional cutting edges
CN1640596A (en) * 2004-01-16 2005-07-20 旭荣研磨加工株式会社 Drill bit for forming stepped hole
CN2822839Y (en) * 2005-08-08 2006-10-04 上海锐晟五金工具有限公司 Composition type step drilling machine

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120251256A1 (en) * 2011-04-04 2012-10-04 GM Global Technology Operations LLC Cutting tool for control of surface roughness
USD936117S1 (en) 2013-06-06 2021-11-16 Milwaukee Electric Tool Corporation Step drill bit
US10695845B2 (en) 2013-06-06 2020-06-30 Milwaukee Electric Tool Corporation Step drill bit
US10252351B2 (en) 2013-06-06 2019-04-09 Milwaukee Electric Tool Corporation Step drill bit
US9731358B2 (en) 2013-06-06 2017-08-15 Milwaukee Electric Tool Corporation Step drill bit
US11554424B1 (en) 2016-02-14 2023-01-17 Hongjia Wang Twist drill
US11007583B2 (en) * 2016-02-14 2021-05-18 Hongjia Wang Twist drill
US11007584B2 (en) * 2016-02-14 2021-05-18 Hongjia Wang Twist drill
US11865627B1 (en) 2016-02-14 2024-01-09 Hongjia Wang Twist drill
US12269101B1 (en) 2016-02-14 2025-04-08 Hongjia Wang Twist drill
US11273501B2 (en) 2018-04-26 2022-03-15 Milwaukee Electric Tool Corporation Step drill bit
US11691203B2 (en) 2018-04-26 2023-07-04 Milwaukee Electric Tool Corporation Step drill bit
DE102018115624A1 (en) * 2018-06-28 2020-01-02 RUKO GmbH Präzisionswerkzeuge Step drills
WO2020002581A1 (en) 2018-06-28 2020-01-02 Ruko Gmbh Praezisionswerkzeuge Step drill
WO2020115301A1 (en) * 2018-12-06 2020-06-11 Ruko Gmbh Praezisionswerkzeuge Step drill

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