WO2009114958A1 - 螺旋刀具 - Google Patents

螺旋刀具 Download PDF

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Publication number
WO2009114958A1
WO2009114958A1 PCT/CN2008/000546 CN2008000546W WO2009114958A1 WO 2009114958 A1 WO2009114958 A1 WO 2009114958A1 CN 2008000546 W CN2008000546 W CN 2008000546W WO 2009114958 A1 WO2009114958 A1 WO 2009114958A1
Authority
WO
WIPO (PCT)
Prior art keywords
cutting
top surface
cutting edge
edge
cutter head
Prior art date
Application number
PCT/CN2008/000546
Other languages
English (en)
French (fr)
Inventor
李仕清
Original Assignee
Li Shiqing
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 Li Shiqing filed Critical Li Shiqing
Priority to JP2011500027A priority Critical patent/JP2011514263A/ja
Priority to CN200880128092.4A priority patent/CN101977713B/zh
Priority to PCT/CN2008/000546 priority patent/WO2009114958A1/zh
Priority to US12/933,324 priority patent/US20110116884A1/en
Publication of WO2009114958A1 publication Critical patent/WO2009114958A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/02—Twist 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
    • B23B2251/14—Configuration of the cutting part, i.e. the main cutting edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/18—Configuration of the drill point
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/48—Chip breakers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/905—Having stepped cutting edges
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/909—Having peripherally spaced cutting edges
    • Y10T408/9095—Having peripherally spaced cutting edges with axially extending relief channel
    • Y10T408/9097—Spiral channel

Definitions

  • the present invention relates to a spiral cutter for use in machining of a drill press, a milling machine, a boring machine, and the like.
  • the twist drill used in machining consists of a chisel edge, a cutting edge, and a spiral sub-blade.
  • the sub-blade is roughly convex in the shape of a sheep.
  • the secondary and cutting edges of the milling cutter are three-bladed and four-blade.
  • the structure of the five-edged blade, but the secondary and cutting edges are not significantly different from the twist drill.
  • the present invention has been made in view of the above problems, and has an object of providing a novel type of screw cutter which has high heat dissipation efficiency, high strength, long life, and easy positioning during drilling.
  • a spiral cutter comprising a cutter head, wherein the cutter head is integrally provided with a plurality of spiral strips, and a blade facing the cutting direction of each spiral strip is formed as a minor cutting edge, and a surface of the minor cutting edge facing the cutting direction Formed as a cutting surface, the surface on the back side of the cutting surface is formed as a rear cutting surface, and a step portion is formed on the top surface of the tool head, and the step portion is formed from the center of the top surface of the tool head so as to gradually decrease toward the outer side.
  • each step is inclined with respect to the outer circumference of the cutter head, and the intersection of the cutting surface with the i step portion and the top surface of the cutter head forms a main cutting edge, and the rear cutting surface and the step a chamfered surface is formed at a boundary between the portion and the top surface of the cutter head, and a rising cutting surface is formed on a side of the chamfered surface near the center of the top surface, and the chamfered surface is intersected with the step portion and the top surface of the cutter head As a cutting edge, the intersection of the rising cutting surface and the step portion on the back side thereof is formed as a top edge.
  • one or more stages of heat dissipation stages are formed from the top surface of the tool head in parallel with the minor cutting edge, and a front portion of the heat dissipation stage facing the cutting direction is formed One or more substage cutting edges of the heat sink.
  • one or more arcuate grooves are formed respectively, and the arcuate grooves are gradually enlarged from the main cutting edge side toward the cutting rear edge side. Way to extend.
  • one or more arcuate grooves are formed respectively, and the arcuate grooves are gradually enlarged from the main cutting edge side toward the cutting rear edge side. Way to extend.
  • a spiral cutter comprising a cutter head, wherein the cutter head is integrally provided with a plurality of spiral strips, and a blade facing the cutting direction of each spiral strip is formed as a minor cutting edge, and a surface of the minor cutting edge facing the cutting direction Formed as a cutting surface, the surface on the back side of the cutting surface is formed as a rear cutting surface, the intersection of the top surface of the tool head and the cutting surface forms a main cutting edge, and a chamfered surface is formed at a boundary between the rear cutting surface and the top surface of the tool head.
  • a rising cutting surface is formed on a side of the chamfered surface near the center of the top surface, and a line of intersection of the chamfered surface and the top surface of the cutter head is formed as a cutting edge, and the intersection of the rising cutting surface and the step portion on the back side thereof As the top edge, one or more arcuate grooves are formed on the top surface, and the arcuate grooves extend from the main cutting edge side toward the cutting edge side in such a manner that the opening gradually becomes larger.
  • one or more stages of heat dissipation stages are formed from the top surface of the tool head in parallel with the minor cutting edge, on the heat dissipation platform
  • One or more heat sink sub cutting edges are formed at the front portion facing the cutting direction.
  • a spiral cutter comprising a cutter head, wherein the cutter head is integrally provided with a plurality of spiral strips, and a blade facing the cutting direction of each spiral strip is formed as a minor cutting edge, and a surface of the minor cutting edge facing the cutting direction Formed as a cutting surface, the surface on the back side of the cutting surface is formed as a rear cutting surface, the intersection of the top surface of the tool head and the cutting surface forms a main cutting edge, and a chamfered surface is formed at a boundary between the rear cutting surface and the top surface of the tool head.
  • a rising cutting surface is formed on a side of the chamfered surface near the center of the top surface, and a line of intersection of the chamfered surface and the top surface of the cutter head is formed as a cutting edge, and the intersection of the rising cutting surface and the step portion on the back side thereof a top edge, on the outer peripheral surface of the spiral strip, a first or a plurality of stages of heat sinks are formed from the top surface of the tool head in parallel with the minor cutting edge, and formed on the front side of the heat sink facing the cutting direction There are one or more substage cutting edges for the heat sink.
  • two spiral strips are formed, and a uniform thickness of the alloy cutter head is formed on the cutter head so as to penetrate the cutter head and is symmetric with respect to the center of the top surface, and the two orientation heads of the alloy cutter head face in the cutting direction
  • Each of the faces passes through two intersections of the top edge and the main cutting edge, and the face of the alloy bit facing the cutting direction forms an upper portion of the cutting face, and the cutting edge facing the cutting direction forms the main cutting edge.
  • Fig. 1 is a schematic view of a spiral cutter according to a first embodiment of the present invention.
  • Fig. 2 is a schematic view of a spiral cutter according to a second embodiment of the present invention.
  • Fig. 3 is a schematic view of a spiral cutter according to a third embodiment of the present invention.
  • Fig. 4 is a schematic view of a spiral cutter according to a fourth embodiment of the present invention.
  • Fig. 5 is a schematic view of a spiral cutter according to a fifth embodiment of the present invention.
  • Fig. 6 is a schematic view of a spiral cutter according to a sixth embodiment of the present invention.
  • Fig. 7 is a schematic view of a spiral cutter according to a seventh embodiment of the present invention.
  • Fig. 8 is a schematic view of a spiral cutter according to an eighth embodiment of the present invention.
  • a spiral cutter according to a first embodiment of the present invention includes a cutter head 1 integrally provided with two spiral strips 2, and a blade facing the cutting direction of each spiral strip 2 is formed as a minor cutting edge. 3.
  • the surface facing the cutting direction where the minor cutting edge 3 is located is formed as the cutting surface 4, the surface on the back side of the cutting surface 4 is formed as the rear cutting surface 5, and the step surface 7 is formed on the top surface 6 of the tool head 1, the step The portion 7 is formed with one or more steps from the center O of the top surface of the cutter head so as to gradually decrease toward the outer side.
  • two steps 71, 72 are formed, and the outer circumference of each step is opposite to the cutter head 1
  • the outer peripheral edge is inclined, and the intersection of the cutting surface 4 with the step portion 7 and the tool head top surface 6 forms a main cutting edge 8, and a boundary between the rear cutting surface 5 and the step portion 7 and the tool head top surface 6 is formed.
  • the chamfered surface 9 is formed with a rising cutting surface 15 on the side of the chamfered surface 9 near the center O of the top surface, and the intersection of the chamfered surface 9 and the stepped portion 7 and the top surface 6 of the cutter head is formed as a cut surface Blade 10, the rising cutting surface and Contacting the stepped portion of the cross linear becomes the back side of the top edge 11.
  • the step portion 7 is formed on the top surface 6 of the tool head 1, the step portion 7 is formed with one or more steps 71 from the center O of the top surface of the tool head so as to gradually decrease toward the outer side. 7n, the outer circumference of each step is inclined with respect to the outer circumference of the tool head 1, and the intersection of the cutting surface 4 with the step portion 7 and the tool head top surface 6 forms a main cutting edge 8, and the rear cutting surface 5 A chamfered surface 9 is formed at a boundary with the step portion 7 and the cutter head top surface 6, and the chamfered surface is near the center of the top surface
  • the rising cutting surface 15 is formed on one side, and the intersection line between the rising cutting surface 15 and the step portion on the back side thereof is formed as the top edge 11, so that the heat dissipation area of the tool head is increased as compared with the conventional cutter head.
  • the spiral cutter according to the second embodiment of the present invention is provided on the outer peripheral surface of the spiral strip 2 from the cutter head 1 in parallel with the minor cutting edge 3.
  • the top surface 6 is formed with a first stage heat dissipation stage 12, and a heat dissipation stage sub-cutting edge 13 is formed in a front portion of the heat dissipation stage 12 facing the cutting direction.
  • the heat dissipation table is formed from the top surface 6 of the tool head 1 so as to be parallel to the minor cutting edge 3 on the outer circumferential surface of the spiral strip 2 .
  • the heat sink sub-cutting edge 13 is formed in the front portion of the heat sink 12 facing the cutting direction. Therefore, a new sub-cutting edge 13 is added to the conventional cutter head, thereby making it possible to use two sub-cutting edges.
  • the cutting edge works to decompose the cutting force of the minor cutting edge, reduce the frictional strength of the minor cutting edge, reduce the amount of friction heat generation, and increase the heat dissipation area of the tool head, reduce the tool head temperature, and make the tool life. Extend and maintain high strength throughout the process.
  • first stage heat dissipation stage 12 is exemplified in the second embodiment, a multi-stage heat dissipation stage may be formed, and in the case where a multi-stage heat dissipation stage is formed, a front portion of each heat dissipation stage facing the cutting direction is formed. There is a sub-cutting edge of the heat sink.
  • the spiral cutter according to the third embodiment of the present invention in the structure of the first embodiment, is divided on each step and on the top surface 6 outside the step.
  • One or more arcuate grooves A are formed to extend from the main cutting edge 8 side toward the cutting rear edge 10 side in such a manner that the opening gradually becomes larger.
  • each of the steps and the top surface 6 outside the step portion are respectively formed with one or more curved grooves A, the curved concave Since the groove A extends from the main cutting edge 8 side toward the cutting rear edge 10 side with the opening gradually increasing, the heat dissipation area can be further increased, so that the heat dissipation efficiency is further improved.
  • one or more curved shapes are respectively formed on each step and on the top surface 6 outside the step portion.
  • the groove A extends from the main cutting edge 8 side toward the cutting rear edge 10 side in such a manner that the opening gradually becomes larger.
  • each of the steps and the top surface 6 outside the step portion are respectively formed with one or a plurality of curved grooves A, the curved concave Since the groove A extends from the main cutting edge 8 side toward the cutting rear edge 10 side with the opening gradually increasing, the heat dissipation area can be further increased, so that the heat dissipation efficiency is further improved.
  • a spiral cutter according to a fifth embodiment of the present invention includes a cutter head 1, and a cutter head 1 is integrally provided with a plurality of spiral strips 2, and a blade facing the cutting direction of each spiral strip 2 is formed as a minor cutting
  • the blade 3 the surface facing the cutting direction where the minor cutting edge 3 is located is formed as the cutting surface 4
  • the surface on the back side of the cutting surface 4 is formed as the rear cutting surface 5
  • the intersection of the top surface 6 of the tool head 1 and the cutting surface 4 is formed as the main cutting.
  • the blade 8 is formed with a chamfered surface 9 at a boundary between the rear cutting surface 5 and the top surface 6 of the tool head 1, and a rising cutting surface 15 is formed on a side of the chamfered surface 9 near the center of the top surface, the chamfering
  • the intersection of the surface 9 and the top surface 6 of the tool head 1 is formed as a cutting edge 10, and the intersection of the rising cutting surface 15 and the step portion on the back side thereof is formed as a top edge 11, on which the top surface 6 is formed.
  • One or more arcuate grooves A extending from the side of the main cutting edge 8 toward the side of the cutting edge 10 with the opening gradually becoming larger.
  • a rising cutting surface 15 is formed on the side of the chamfered surface near the center of the top surface.
  • the intersection of the cutting face 15 and the abutting step portion on the back side thereof is formed as a top edge 11 on which one or more arcuate grooves A are formed, which are formed from the main cutting edge 8
  • the side faces toward the cutting edge 10 side and the opening gradually increases. Therefore, the heat dissipation area of the tool head is increased compared with the conventional tool bit, the tool head temperature is lowered, the tool life is prolonged, and during the machining process.
  • a positioning center formed by the two top edges can form a positioning center, which can better position during the machining process, further improve the machining accuracy, and prevent the positioning from being unstable.
  • the spiral cutter according to the sixth embodiment of the present invention is configured from the cutter head 1 on the outer peripheral surface of the spiral strip 2 so as to be parallel to the minor cutting edge 3 in the configuration of the fifth embodiment.
  • the top surface 6 is formed with a first stage heat dissipation stage 12, and a heat dissipation stage sub-cutting edge 13 is formed in a front portion of the heat dissipation stage 12 facing the cutting direction.
  • the heat dissipation table is formed from the top surface 6 of the tool head 1 so as to be parallel to the minor cutting edge 3 on the outer circumferential surface of the spiral strip 2 . 12. Since the heat sink sub-cutting edge 13 is formed in the front portion of the heat sink 12 facing the cutting direction, a new sub-cutting edge 13 is added to the conventional cutter head, thereby making it possible to use two sub-cutting edges.
  • the cutting edge works to decompose the cutting force of the minor cutting edge, reduce the frictional strength of the minor cutting edge, reduce the amount of friction heat generation, and increase the heat dissipation area of the tool head, reduce the tool head temperature, and make the tool life.
  • a multi-stage heat dissipation stage may be formed, and in the case where a multi-stage heat dissipation stage is formed, a front portion of each heat dissipation stage facing the cutting direction is formed. There is a sub-cutting edge of the heat sink.
  • a spiral cutter according to a seventh embodiment of the present invention includes a cutter head 1, and a cutter head 1 is integrally provided with a plurality of spiral strips 2, and a blade facing the cutting direction of each spiral strip 2 is formed as a minor cutting
  • the blade 3 the surface facing the cutting direction where the minor cutting edge 3 is located is formed as the cutting surface 4
  • the surface on the back side of the cutting surface 4 is formed as the rear cutting surface 5
  • the intersection of the top surface 6 of the tool head 1 and the cutting surface 4 is formed as the main cutting.
  • the blade 8 has a chamfered surface 9 formed at a boundary between the rear cutting surface 5 and the top surface 6 of the tool head 1, and a rising cutting surface 15 is formed on a side of the chamfered surface near the center of the top surface, the chamfered surface
  • the intersection line with the top surface 6 of the tool head 1 is formed as a cutting edge 10, and the intersection of the rising cutting surface 15 and the step portion on the back side thereof is formed as a top edge 11, on the outer peripheral surface of the spiral strip 2,
  • a first stage heat sink 12 is formed from the top surface 6 of the tool head 1 in parallel with the minor cutting edge 3, and a heat sink sub cutting edge 13 is formed in the front portion of the heat sink 12 facing the cutting direction.
  • the chamfered surface 9 is formed at the boundary between the rear cutting surface 5 and the top surface 6 of the tool head 1 a rising cutting surface 15 is formed on the side of the chamfered surface near the center of the top surface.
  • the intersection line between the cutting surface 15 and the step portion on the back side thereof is formed as a top edge 11, and the outer peripheral surface of the spiral strip 2 is formed in parallel with the minor cutting edge 3 from the top surface 6 of the tool head 1.
  • the heat sink 12 has a heat sink sub-cutting edge 13 formed in the front portion of the heat sink 12 facing the cutting direction. Therefore, a new sub-cutting edge 13 is added to the conventional cutter head.
  • the two secondary cutting edges work to resolve the cutting force of the secondary cutting edge, reduce the frictional strength of the secondary cutting edge, reduce the amount of frictional heat generation, and increase the heat dissipation area of the tool head and reduce the temperature of the tool head.
  • Tool life is extended and high strength is maintained throughout the process.
  • the sharp portion formed by the two top edges can be A positioning center is formed, which can better locate and further improve the machining accuracy during the machining process, and prevent the problem of bringing the workpiece up when drilling a thin workpiece due to unstable positioning.
  • a multi-stage heat dissipation stage may be formed, and in the case where a multi-stage heat dissipation stage is formed, a front portion of each heat dissipation stage facing the cutting direction is formed. There is a sub-cutting edge of the heat sink.
  • the alloy tip 14 having a uniform thickness is interposed on the tool head 1 so as to penetrate the cutter head 1 and be symmetrical with respect to the center O of the top surface.
  • the two faces of the alloy bit 14 facing the cutting direction respectively pass through two intersections B, B of the top edge and the main cutting edge, and the face 51 of the alloy bit 14 facing the cutting direction forms the upper side of the cutting face 5.
  • the cutting edge 81 facing the cutting direction forms the main cutting edge 8, so that the strength of the tool head is further enhanced, the cutting edge is sharper, and the tool life is prolonged, and during the machining process, compared with the conventional cutter head. Always maintain high strength and increase production efficiency.
  • the cutter of the present invention may have more spiral strips, and the structure of each embodiment as described above and any other form may be employed on each spiral strip. The combination.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)
  • Milling Processes (AREA)

Description

螺旋刀具 技术领域
本发明涉及一种螺旋刀具， 该螺旋刀具用于钻床、 铣床、 镗 床等的机械加工中。
背景技术
目前， 机械加工中使用的麻花钻由横刃、 切削刃、 螺旋副刃 台构成， 副刃大致呈羊一的凸状， 铣刀的副刃及切削刃虽然为分 布设置的三刃、 四刃、 五刃等的结构， 但其副刃及切削刃与麻花 钻并无大的区别。 这些麻花钻及铣刀在钻 （铣） 削硬度较高的工 件时容易产生大量的热， 导致刀头的硬度降低，造成刀头的磨损， 同时该种刀头还存在易折断的缺陷。 而且， 由于刀头两侧的切削 刃在工作时是对称的，而切削量一般仅为数十微米至 1毫氷左右， 所以在人工修磨时很难掌握修磨角度高度。 另外， 这些麻花钻及 铣刀， 由于刀头的中心位置不易掌握， 所以容易造成定位不准、 所加工的孔的精度不合格， 极易出现废品， 同时， 在加工较薄的 工件时还存在将工件带起造成工伤事故的问题。
发明内容
本发明就是鉴于上述的问题而提出的， 以提供一种新型的螺 旋刀具为目的， 该种刀具散热效率高、 强度大、 寿命长， 且在钻 削加工时容易定位。
为了达到上述目的， 本发明采用下述技术方案：
一种螺旋刀具， 包括刀具头， 其特征在于， 刀具头一体地设 置有多个螺旋条， 每个螺旋条的朝向切削方向的刃形成为副切削 刃， 副切削刃所在的朝向切削方向的面形成为切削面， 切削面背 面侧的面形成为后切削面， 在刀具头的顶面上形成有台阶部， 该 台阶部从刀具头顶面中心开始以向外侧高度逐渐降低的方式形成 有一级或多级台阶， 每级台阶的外周缘相对于刀具头的外周缘倾 斜，所述切削面与 i 台阶部和刀具头顶面的交线形成为主切削刃， 在后切削面与所述台阶部和刀具头顶面的交界处形成有倒角面， 在该倒角面的接近顶面中心的一侧形成有立起切削面， 该倒角面 与所述台阶部和刀具头顶面的交线形成为切削后刃， 该立起切削 面与其背面侧的相接台阶部的交线形成为顶刃。
优选地， 在所述螺旋条的外周面上， 以与副切削刃平行的方 式从刀具头的顶面开始形成有一级或多级散热台， 在该散热台的 朝向切削方向的前部形成有一个或多个散热台副切削刃。
优选地， 在每级台阶上以及台阶部外侧的顶面上， 分别形成 有一个或多个弧形凹槽， 该弧形凹槽从主切削刃侧朝向切削后刃 侧以开口逐渐变大的方式延伸。
优选地， 在每级台阶上以及台阶部外侧的顶面上， 分别形成 有一个或多个弧形凹槽， 该弧形凹槽从主切削刃侧朝向切削后刃 侧以开口逐渐变大的方式延伸。
一种螺旋刀具， 包括刀具头， 其特征在于， 刀具头一体地设 置有多个螺旋条， 每个螺旋条的朝向切削方向的刃形成为副切削 刃， 副切削刃所在的朝向切削方向的面形成为切削面， 切削面背 面侧的面形成为后切削面， 刀具头顶面与切削面的交线形成为主 切削刃， 在后切削面与刀具头顶面的交界处形成有倒角面， 在该 倒角面的接近顶面中心的一侧形成有立起切削面， 该倒角面与刀 具头顶面的交线形成为切削后刃， 该立起切削面与其背面侧的相 接台阶部的交线形成为顶刃， 在所述顶面上形成有一个或多个弧 形凹槽， 该弧形凹槽从主切削刃侧朝向切削后刃侧以开口逐渐变 大的方式延伸。
优选地， 在所述螺旋条的外周面上， 以与副切削刃平行的方 式从刀具头的顶面开始形成有一级或多级散热台， 在该散热台的 朝向切削方向的前部形成有一个或多个散热台副切削刃。
一种螺旋刀具， 包括刀具头， 其特征在于， 刀具头一体地设 置有多个螺旋条， 每个螺旋条的朝向切削方向的刃形成为副切削 刃， 副切削刃所在的朝向切削方向的面形成为切削面， 切削面背 面侧的面形成为后切削面， 刀具头顶面与切削面的交线形成为主 切削刃， 在后切削面与刀具头顶面的交界处形成有倒角面， 在该 倒角面的接近顶面中心的一侧形成有立起切削面， 该倒角面与刀 具头顶面的交线形成为切削后刃， 该立起切削面与其背面侧的相 接台阶部的交线形成为顶刃， 在所述螺旋条的外周面上， 以与副 切削刃平行的方式从刀具头的顶面开始形成有一级或多级散热 台， 在该散热台的朝向切削方向的前部形成有一个或多个散热台 副切削刃。
优选地， 形成有两个螺旋条， 并且在刀具头上以贯穿该刀具 头且相对于顶面中心对称的方式夹设有厚度均匀的合金刀头， 所 述合金刀头的朝向切削方向的两个面分别通过顶刃与主切削刃的 两个交点， 该合金刀头的朝向切削方向的面形成切削面的上侧部 分， 朝向切削方向的切削刃形成所述主切削刃。 附图说明
本发明的技术方案和优点将通过结合附图进行详细的说明， 在该附图中：
图 1是本发明的第一实施方式的螺旋刀具的示意图。
图 2是本发明的第二实施方式的螺旋刀具的示意图。
图 3是本发明的第三实施方式的螺旋刀具的示意图。
图 4是本发明的第四实施方式的螺旋刀具的示意图。
图 5是本发明的第五实施方式的螺旋刀具的示意图。
图 6是本发明的第六实施方式的螺旋刀具的示意图。 图 7是本发明的第七实施方式的螺旋刀具的示意图。
图 8是本发明的第八实施方式的螺旋刀具的示意图。
具体实施方式
下面将结合附图详细地说明本发明的螺旋刀具的优选实施方 式， 在实施方式 1-8中主要以具有两个螺旋条的刀具为例进行说 明。 在下面的说明中， 相同的部件使用相同的符号并省略对其具 体的说明。
实施方式 1
如图 1所示， 本发明的第一实施方式的螺旋刀具包括刀具头 1， 刀具头 1一体地设置有两个螺旋条 2, 每个螺旋条 2的朝向切 削方向的刃形成为副切削刃 3， 副切削刃 3所在的朝向切削方向 的面形成为切削面 4，切削面 4背面侧的面形成为后切削面 5，在 刀具头 1的顶面 6上形成有台阶部 7， 该台阶部 7从刀具头顶面 中心 O 开始以向外侧高度逐渐降低的方式形成有一级或多级台 阶， 在本实施方式中形成有两级台阶 71， 72, 每级台阶的外周缘 相对于刀具头 1的外周缘倾斜， 所述切削面 4与该台阶部 7和刀 具头顶面 6的交线形成为主切削刃 8， 在后切削面 5与所述台阶 部 7和刀具头顶面 6的交界处形成有倒角面 9, 在该倒角面 9的 接近顶面中心 O的一侧形成有立起切削面 15，该倒角面 9与所述 台阶部 7和刀具头顶面 6的交线形成为切削后刃 10， 该立起切削 面与其背面侧的相接台阶部的交线形成为顶刃 11。
根据上述结构， 由于在刀具头 1的顶面 6上形成有台阶部 7， 该台阶部 7从刀具头顶面中心 O开始以向外侧高度逐渐降低的方 式形成有一级或多级台阶 71......7n, 每级台阶的外周缘相对于刀 具头 1的外周缘倾斜， 所述切削面 4与该台阶部 7和刀具头顶面 6的交线形成为主切削刃 8，在后切削面 5与所述台阶部 7和刀具 头顶面 6的交界处形成有倒角面 9， 在该倒角面的接近顶面中心 的一侧形成有立起切削面 15， 该立起切削面 15与其背面侧的相 接台阶部的交线形成为顶刃 11， 因此， 与以往的刀头相比增加了 刀具头的散热面积， 降低刀具头温度， -使刀具使用寿命延长， 并 在加工过程中可一直保持高强度， 并且， 通过由两条顶刃所形成 的尖锐部可形成一个定位中心， 在加工过程中能够更好地进行定 位、 进一步提高加工精度， 并可防止因定位不稳而在钻削较薄的 工件时发生将工件带起的问题。
实施方式 2
如图 2所示， 本发明的第二实施方式的螺旋刀具， 在第一实 施方式的结构中， 在所述螺旋条 2的外周面上， 以与副切削刃 3 平行的方式从刀具头 1的顶面 6开始形成有一级散热台 12， 在该 散热台 12的朝向切削方向的前部形成有散热台副切削刃 13。
通过如此地构成， 在实施方式 1的技术效果的基础上， 由于 在所述螺旋条 2的外周面上， 以与副切削刃 3平行的方式从刀具 头 1的顶面 6开始形成有散热台 12， 在该散热台 12的朝向切削 方向的前部形成有散热台副切削刃 13， 因此与以往的刀头相比， 又增加了一条新的副切削刃 13 , 由此可以以两条副切削刃进行工 作，从而能够分解副切削刃的切削力、 降低副切削刃的摩擦强度， 使摩擦热产生量减小， 同时还能够增加刀具头的散热面积， 降低 刀具头温度， 使刀具使用寿命延长， 并在加工过程中一直保持高 强度。
虽然在本实施方式 2中例示了一级散热台 12,但是也可形成 有多级散热台， 在形成有多级散热台的情况下， 在每个散热台的 朝向切削方向的前部都形成有散热台副切削刃。
实施方式 3
如图 3所示， 本发明的第三实施方式的螺旋刀具， 在第一实 施方式的结构中， 在每级台阶上以及台阶部外侧的顶面 6上， 分 别形成有一个或多个弧形凹槽 A， 该弧形凹槽 A从主切削刃 8侧 朝向切削后刃 10侧以开口逐渐变大的方式延伸。
通过如此地构成， 在第一实施方式的技术效果的基础上， 由 于在每级台阶上以及台阶部外侧的顶面 6上， 分别形成有一个或 多个弧形凹槽 A，该弧形凹槽 A从主切削刃 8侧朝向切削后刃 10 侧以开口逐渐变大的方式延伸， 所以可以进一步增加散热面积， 因此散热效率进一步提高。
实施方式 4
如图 4所示， 本发明的第四实施方式的螺旋刀具， 在第二实 施方式的结构中， 在每级台阶上以及台阶部外侧的顶面 6上， 分 别形成有一个或多个弧形凹槽 A， 该弧形凹槽 A从主切削刃 8侧 朝向切削后刃 10侧以开口逐渐变大的方式延伸。
通过如此地构成， 在第二实施方式的技术效果的基础上， 由 于在每级台阶上以及台阶部外侧的顶面 6上， 分别形成有一个或 多个弧形凹槽 A，该弧形凹槽 A从主切削刃 8侧朝向切削后刃 10 侧以开口逐渐变大的方式延伸， 所以可以进一步增加散热面积， 因此散热效率进一步提高。
实施方式 5
如图 5所示， 本发明的第五实施方式的螺旋刀具， 包括刀具 头 1， 刀具头 1一体地设置有多个螺旋条 2，每个螺旋条 2的朝向 切削方向的刃形成为副切削刃 3， 副切削刃 3所在的朝向切削方 向的面形成为切削面 4， 切削面 4背面侧的面形成为后切削面 5， 刀具头 1顶面 6与切削面 4的交线形成为主切削刃 8， 在后切削 面 5与刀具头 1顶面 6的交界处形成有倒角面 9， 在该倒角面 9 的接近顶面中心的一侧形成有立起切削面 15， 该倒角面 9与刀具 头 1顶面 6的交线形成为切削后刃 10， 该立起切削面 15与其背 面侧的相接台阶部的交线形成为顶刃 11， 在所述顶面 6上形成有 一个或多个弧形凹槽 A， 该弧形凹槽 A从主切削刃 8侧朝向切削 后刃 10侧以开口逐渐变大的方式延伸。
根据上述结构， 由于在后切削面 5与刀具头 1顶面 6的交界 处形成有倒角面 9， 在该倒角面的接近顶面中心的一侧形成有立 起切削面 15， 该立起切削面 15与其背面侧的相接台阶部的交线 形成为顶刃 11， 在所述顶面 6上形成有一个或多个弧形凹槽 A， 该弧形凹槽 A从主切削刃 8侧朝向切削后刃 10侧以开口逐渐变 大的方式延伸， 因此， 与以往的刀头相比增加了刀具头的散热面 积， 降低了刀具头温度， 使刀具使用寿命延长， 并在加工过程中 一直保持高强度， 并且， 通过由两条顶刃所形成的尖锐部可形成 了一个定位中心， 在加工过程中能够更好地进行定位、 进一步提 高加工精度， 并可防止因定位不稳而在钻削较薄的工件时发生将 工件带起的问题。
实施方式 6
如图 6所示， 本发明的第六实施方式的螺旋刀具， 在第五实 施方式的结构中， 在所述螺旋条 2的外周面上， 以与副切削刃 3 平行的方式从刀具头 1的顶面 6开始形成有一级散热台 12， 在该 散热台 12的朝向切削方向的前部形成有散热台副切削刃 13。
通过如此地构成， 在实施方式 5的技术效果的基础上， 由于 在所述螺旋条 2的外周面上， 以与副切削刃 3平行的方式从刀具 头 1的顶面 6开始形成有散热台 12， 在该散热台 12的朝向切削 方向的前部形成有散热台副切削刃 13， 因此与以往的刀头相比， 又增加了一条新的副切削刃 13， 由此可以以两条副切削刃进行工 作，从而能够分解副切削刃的切削力、 降低副切削刃的摩擦强度， 使摩擦热产生量减小， 同时还能够增加刀具头的散热面积， 降低 刀具头温度， 使刀具使用寿命延长， 并在加工过程中一直保持高 强度。 虽然在本实施方式 6中例示了一级散热台 12， 但是也可形成 有多级散热台， 在形成有多级散热台的情况下， 在每个散热台的 朝向切削方向的前部都形成有散热台副切削刃。
实施方式 7
如图 7所示， 本发明的第七实施方式的螺旋刀具， 包括刀具 头 1， 刀具头 1一体地设置有多个螺旋条 2，每个螺旋条 2的朝向 切削方向的刃形成为副切削刃 3， 副切削刃 3所在的朝向切削方 向的面形成为切削面 4， 切削面 4背面侧的面形成为后切削面 5， 刀具头 1顶面 6与切削面 4的交线形成为主切削刃 8， 在后切削 面 5与刀具头 1顶面 6的交界处形成有倒角面 9, 在该倒角面的 接近顶面中心的一侧形成有立起切削面 15， 该倒角面 9与刀具头 1顶面 6的交线形成为切削后刃 10，该立起切削面 15与其背面侧 的相接台阶部的交线形成为顶刃 11，在所述螺旋条 2的外周面上， 以与副切削刃 3平行的方式从刀具头 1的顶面 6开始形成有一级 散热台 12， 在该散热台 12的朝向切削方向的前部形成有散热台 副切削刃 13。
根据上述结构， 由于在后切削面 5与刀具头 1顶面 6的交界 处形成有倒角面 9， 在该倒角面的接近顶面中心的一侧形成有立 起切削面 15, 该立起切削面 15与其背面侧的相接台阶部的交线 形成为顶刃 11， 在所述螺旋条 2的外周面上， 以与副切削刃 3平 行的方式从刀具头 1的顶面 6开始形成有散热台 12, 在该散热台 12的朝向切削方向的前部形成有散热台副切削刃 13，因此与以往 的刀头相比， 又增加了一条新的副切削刃 13， 由此可以以两条副 切削刃进行工作， 从而能够分解副切削刃的切削力、 降低副切削 刃的摩擦强度， 使摩擦热产生量减小， 同时还能够增加刀具头的 散热面积， 降低刀具头温度， 使刀具使用寿命延长， 并在加工过 程中一直保持高强度。 并且， 通过由两条顶刃所形成的尖锐部可 形成了一个定位中心， 在加工过程中能够更好地定位、 进一步提 高加工精度， 并防止因定位不稳而在钻削较薄的工件时发生将工 件带起的问题。
虽然在本实施方式 7中例示了一级散热台 12, 但是也可形成 有多级散热台， 在形成有多级散热台的情况下， 在每个散热台的 朝向切削方向的前部都形成有散热台副切削刃。
实施方式 8
如图 8所示， 本发明的第八实施方式的螺旋刀具， 在第一一 第七实施方式的螺旋刀具中， 形成有两个螺旋条 2， 并且在刀具 头 1上以贯穿该刀具头 1且相对于顶面中心 O对称的方式夹设有 厚度均匀的合金刀头 14， 所述合金刀头 14的朝向切削方向的两 个面分别通过顶刃与主切削刃的两个交点 B，B，该合金刀头 14的 朝向切削方向的面 51形成切削面 5的上侧部分，朝向切削方向的 切削刃 81形成所述主切削刃 8。
根据上述结构， 在第一 ~第七实施方式的效果的基础上， 由 于在刀具头 1上以贯穿该刀具头 1且相对于顶面中心 O对称的方 式夹设有厚度均匀的合金刀头 14， 所述合金刀头 14的朝向切削 方向的两个面分别通过顶刃与主切削刃的两个交点 B，B， 该合金 刀头 14的朝向切削方向的面 51形成切削面 5的上侧部分， 朝向 切削方向的切削刃 81形成所述主切削刃 8， 因此与以往的刀头相 比， 刀具头的强度进一步加强， 切削刃更加锐利， 可使刀具使用 寿命延长， 并在加工过程中一直保持高强度， 提高生产效率。
以上虽然以具有两个螺旋条的刀具为例进行了说明， 但是本 发明的刀具也可具有更多个螺旋条， 在各螺旋条上可以釆用如上 所述各实施方式的结构以及其它任意形式的组合。
以上所述的优选实施方式是说明性的而不是限制性的， 在不脱 离本发明的主旨和基本特征在情况下， 本发明还可以以其他方式进 行实施和具体化。 本发明的范围由权利要求进行限定， 在权利要求 限定范围内的所有变形都落入本发明的范围内。

Claims

1. 一种螺旋刀具， 包括刀具头， 其特征在于， 刀具头一体地 设置有多个螺旋条， 每个螺旋条的朝向切削方向的刃形成为副切 削刃， 副切削刃所在的朝向切削方向的面形成为切削面， 切削面 背面侧的面形成为后切削面，
在刀具头的顶面上形成有台阶部， 该台阶部从刀具头顶面中 心开始以向外侧高度逐渐降低的方式形成有一级或多级台阶， 每 级台阶的外周缘相对于刀具头的外周缘倾斜， 所述切削面与该台 阶部和刀具头顶面的交线形成为主切削刃，
在后切削面与所述台阶部和刀具头顶面的交界处形成有倒角 面， 在该倒角面的接近顶面中心的一侧形成有立起切削面， 该倒 角面与所述台阶部和刀具头顶面的交线形成为切削后刃， 该立起 切削面与其背面侧的相接台阶部的交线形成为顶刃。
2. 如权利要求 1所述的螺旋刀具， 其特征在于， 在所述螺旋 条的外周面上， 以与副切削刃平行的方式从刀具头的顶面开始形 成有一级或多级散热台， 在该散热台的朝向切削方向的前部形成 有一个或多个散热台副切削刃。
3. 如权利要求 1所述的螺旋刀具， 其特征在于， 在每级台阶 上以及台阶部外侧的顶面上， 分别形成有一个或多个弧形凹槽， 该弧形凹槽从主切削刃侧朝向切削后刃侧以开口逐渐变大的方式 延伸。
4. 如权利要求 2所述的螺旋刀具， 其特征在于， 在每级台阶 上以及台阶部外侧的顶面上， 分别形成有一个或多个弧形凹槽， 该弧形凹槽从主切削刃侧朝向切削后刃侧以开口逐渐变大的方式 延伸。
5. 一种螺旋刀具， 包括刀具头， 其特征在于， 刀具头一体地 设置有多个螺旋条， 每个螺旋条的朝向切削方向的刃形成为副切 削刃， 副切削刃所在的朝向切削方向的面形成为切削面， 切削面 背面侧的面形成为后切削面， 刀具头顶面与切削面的交线形成为 主切削刃，
在后切削面与刀具头顶面的交界处形成有倒角面， 在该倒角 面的接近顶面中心的一侧形成有立起切削面， 该倒角面与刀具头 顶面的交线形成为切削后刃， 该立起切削面与其背面侧的相接台 阶部的交线形成为顶刃，
在所述顶面上形成有一个或多个弧形凹槽， 该弧形凹槽从主 切削刃侧朝向切削后刃侧以开口逐渐变大的方式延伸。
6. 如权利要求 5所述的螺旋刀具， 其特征在于， 在所述螺旋 条的外周面上， 以与副切削刃平行的方式从刀具头的顶面开始形 成有一级或多级散热台， 在该散热台的朝向切削方向的前部形成 有一个或多个散热台副切削刃。
7. 一种螺旋刀具， 包括刀具头， 其特征在于， 刀具头一体地 设置有多个螺旋条， 每个螺旋条的朝向切削方向的刃形成为副切 削刃， 副切削刃所在的朝向切削方向的面形成为切削面， 切削面 背面侧的面形成为后切削面， 刀具头顶面与切削面的交线形成为 主切削刃，
在后切削面与刀具头顶面的交界处形成有倒角面， 在该倒角 面的接近顶面中心的一侧形成有立起切削面， 该倒角面与刀具头 顶面的交线形成为切削后刃， 该立起切削面与其背面侧的相接台 阶部的交线形成为顶刃，
在所述螺旋条的外周面上， 以与副切削刃平行的方式从刀具 头的顶面开始形成有一级或多级散热台， 在该散热台的朝向切削 方向的前部形成有一个或多个散热台副切削刃。
8. 如权利要求 1 ~ 7 中的任一项所述的螺旋刀具， 其特 ^在 于， 形成有两个螺旋条， 并且在刀具头上以贯穿该刀具头且相对 于顶面中心对称的方式夹设有厚度均匀的合金刀头， 所述合金刀 点， 该合金刀头的朝向切削方向的面形成切削面的上侧部分， 朝 向切削方向的切削刃形成所述主切削刃。
PCT/CN2008/000546 2008-03-19 2008-03-19 螺旋刀具 WO2009114958A1 (zh)

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