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WO2012152101A1 - 一种可转位扩孔钻 - Google Patents

一种可转位扩孔钻 Download PDF

Info

Publication number
WO2012152101A1
WO2012152101A1 PCT/CN2012/071225 CN2012071225W WO2012152101A1 WO 2012152101 A1 WO2012152101 A1 WO 2012152101A1 CN 2012071225 W CN2012071225 W CN 2012071225W WO 2012152101 A1 WO2012152101 A1 WO 2012152101A1
Authority
WO
WIPO (PCT)
Prior art keywords
cutter body
indexable
guide head
cutter
diameter
Prior art date
Application number
PCT/CN2012/071225
Other languages
English (en)
French (fr)
Inventor
范晖
唐弘斌
张卫群
陈英
Original Assignee
上海锅炉厂有限公司
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 上海锅炉厂有限公司 filed Critical 上海锅炉厂有限公司
Publication of WO2012152101A1 publication Critical patent/WO2012152101A1/zh
Priority to ZA2013/00782A priority Critical patent/ZA201300782B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/03—Boring heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/10—Bits for countersinking
    • 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
    • B23B2251/50—Drilling tools comprising cutting inserts

Definitions

  • the invention relates to an indexable reamer. Background technique
  • the existing indexable rotor on the market is a shallow hole drill (see Figure 2).
  • the maximum cutting depth is 4 times the diameter.
  • the shallow hole drill uses two inner and outer blades, and the high wear resistant alloy blade is used as the outer edge 11. Toughness The high blade acts as the inner edge 22, the inner edge 22 is centered during cutting, and the outer edge 11 is cut, so the drill bit has certain advantages for drilling a solid hole.
  • the drill has a large problem, the positions of the inner edge 22 and the outer edge 11 are asymmetrical (as shown in FIG. 3), and the inner edge 22 and the outer edge 11 have an angle ⁇ , since the inner edge does not participate in the cutting. Positioning, relying solely on external cutting, is prone to offset and vibration, and the tool has poor durability. Summary of the invention
  • the invention provides an indexable reamer, which improves processing efficiency and processing quality.
  • the present invention provides an indexable reamer, the reamer comprising a cutter body and a guide head disposed on the cutter body;
  • a double spiral flute is arranged on the cutter body
  • Two symmetrical outer edges are provided on the guide head.
  • the guide head is further provided with an inner cold cutting liquid hole.
  • the cutter body is made of 40Cr steel.
  • the diameter of the guide head is l ⁇ 1.2 mm larger than the diameter of the body.
  • the width of the double spiral flute is 1/4 ⁇ 1/5 of the circumferential length of the cutter body, and the depth is the diameter of the cutter body.
  • the outer blade adopts an indexable insert, and the blade is symmetrically mounted on the outer side of the guide head.
  • the invention reduces the eccentricity of the cutting process, improves the rigidity of the tool, reduces the generation of vibration, improves the cutting efficiency, ensures the ability of automatically discharging chips and chipping during the cutting process, and reduces the friction of the cutter body.
  • FIG. 1 is a schematic view showing the structure of a pipe which needs to be reamed in the background art
  • FIG. 2 is a schematic structural view of a shallow hole drill in the background art
  • FIG. 3 is a schematic view of a slanting structure of a shallow hole drill in the background art
  • FIG. 4 is a schematic structural view of an indexable reamer provided by the present invention.
  • Figure 5 is a schematic view of the directional structure of an indexable reamer according to the present invention.
  • the present invention provides an indexable reamer comprising a cutter body 2 and a guide head 1 disposed on the cutter body 2;
  • the cutter body 2 is made of 40Cr steel
  • the diameter of the guide head 1 is larger than the diameter of the cutter body by 1 mm to reduce the friction between the cutter body and the workpiece;
  • the double-screw flute 201 is disposed on the cutter body, and the double-screw flute 201 satisfies the rigidity of the cutter body, and the depth and the width of the spiral groove are increased as much as possible, and the spiral groove is required to be smooth and smooth;
  • the width of the double spiral flutes 201 is generally 1/4 to 1/5 of the circumferential length of the cutter body, and the depth is about 1/3 of the diameter of the cutter body, and the spiral groove is required to be smooth and smooth.
  • the groove width of the double spiral flutes 201 is increased by l ⁇ 2 mm than the width of the spiral groove of the same size shallow hole drill, which can ensure chip discharge;
  • the guiding head is provided with two symmetrical outer edges 101 (shown in FIG. 5).
  • the outer blade 101 adopts an indexable insert, and the blades are symmetrically mounted on the outer side of the guiding head, and the double blades are symmetrically arranged to reduce the eccentricity during the cutting process.
  • the generation of the tool increases the rigidity of the tool and reduces the generation of vibration, and the double edge simultaneously participates in the cutting to improve the cutting efficiency;
  • the inner head is also provided with an inner cold cutting liquid hole 102, which can take away the cutting heat in time during the cutting process, rapidly cool the tool and the workpiece, and also timely remove the short chips during the cutting process to ensure the durability of the tool. #.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling, Broaching, Filing, Reaming, And Others (AREA)
  • Drilling Tools (AREA)
  • Drilling And Boring (AREA)

Abstract

一种可转位扩孔钻，该扩孔钻包含刀体（2）和设置在刀体上的导向头（1），刀体上设置有双螺旋出屑槽（201），导向头上设置有两个对称的外刃（101），外刃采用可转位刀片，刀片对称安装在导向头外侧。该扩孔钻减少了切削过程偏心距的产生，提高刀具刚性，减少振动的产生，提高了切削效率，保证了切削过程中，自动往外排屑和容屑能力，减少刀体摩擦。

Description

一种 »位扩孔钻
技术领域
本发明涉及一种可转位扩孔钻。 背景技术
在电站锅炉中，集箱管座大量采用各种规格管子，为保证焊接装配质量， 要求管子的内径尺寸必须统一， 因此需要对管子内径进行扩孔加工， 长度 L 与孔径 D之比 >6 (结构见图 1 )。
目前此类零件的加工采用自动送料， 数控加工， 因此切削刀具要求统一 性并具有一定耐用度， 保证产品精度和效率。 市场上现有可转位转头为浅孔 钻 （见图 2)， 最大切削深度在 4倍直径， 该浅孔钻采用内外两个刀片， 耐磨 性高的合金刀片作为外刃 11， 韧性高的刀片作为内刃 22， 切削时内刃 22为 定心作用， 外刃 11进行切削， 因此该钻头对于钻实心孔具有一定优势。但对 于扩孔， 该钻头问题较大， 内刃 22和外刃 11的位置不对称 （如图 3所示）， 内刃 22与外刃 11之间存在夹角 β， 由于内刃不参与切削定位， 仅依靠外刃 切削加工， 容易产生偏距和振动， 刀具耐用度差。 发明内容
本发明提供的一种可转位扩孔钻， 提高了加工效率和加工质量。
为了达到上述目的， 本发明提供一种可转位扩孔钻， 该扩孔钻包含刀体 和设置在刀体上的导向头；
刀体上设置有双螺旋出屑槽；
导向头上设置有两个对称的外刃。
所述的导向头上还设置有内冷切削液孔。
所述刀体采用 40Cr钢。
所述导向头的直径比刀体直径大 l~1.2mm。
所述双螺旋出屑槽的宽度为刀体圆周长度的 1/4~1/5，深度为刀体直径的
1/3。
所述的外刃采用可转位刀片， 刀片对称安装在导向头外恻。 本发明减少了切削过程偏心距的产生，提高刀具刚性，减少振动的产生， 提高了切削效率， 保证了切削过程中， 自动往外排屑和容屑能力， 减少刀体 摩擦。 附图说明
图 1是背景技术中需要扩孔的管子结构示意图；
图 2是背景技术中浅孔钻的结构示意图；
图 3是背景技术中浅孔钻的恻向结构示意图；
图 4是本发明提供的一种可转位扩孔钻的结构示意图；
图 5是本发明提供的一种可转位扩孔钻的恻向结构示意图； 具体实 ¾ ¾r式
以下根据图 4和图 5， 具体说明本发明的较佳实施例：
如图 4所示， 是本发明提供的一种可转位扩孔钻， 其包含刀体 2和设置 在刀体 2上的导向头 1 ;
所述刀体 2采用 40Cr钢；
本实施例中， 所述导向头 1的直径比刀体直径大 lmm， 以减少刀体与工 件的摩擦；
刀体上设置有双螺旋出屑槽 201， 该双螺旋出屑槽 201在满足刀体刚度 的情况下， 尽量加大螺旋槽的深度和宽度， 并且要求螺旋槽圆滑光洁；
双螺旋出屑槽 201的宽度一般取值为刀体圆周长度的 1/4~1/5，深度为刀 体直径 1/3左右， 并且要求螺旋槽圆滑光洁。
本实施例中， 双螺旋出屑槽 201的槽宽比同规格浅孔钻螺旋槽宽度方向 加大了 l~2mm， 可以保证出屑；
导向头上设置有两个对称的外刃 101 (如图 5所示）， 该外刃 101采用可 转位刀片， 刀片对称安装在导向头外恻， 双刀片对称设置， 减少了切削过程 偏心距的产生， 提高刀具刚性， 减少振动的产生， 并且双刃同时参与切削， 提高切削效率；
导向头上还设置有内冷切削液孔 102， 可以在切削过程中及时带走切削 热， 迅速冷却刀具和工件， 另外也及时冲走切削过程中短屑， 保证刀具耐用 #。
大尺寸双螺旋出屑槽和导向头， 保证了切削过程中， 自动往外排屑和容 屑能力， 减少刀体摩擦。
尽管本发明的内容已经通过上述优选实施例作了详细介绍， 但应当认识 到上述的描述不应被认为是对本发明的限制。 在本领域技术人员阅读了上述 内容后， 对于本发明的多种修改和替代都将是显而易见的。 因此， 本发明的 保护范围应由所附的权利要求来限定。

Claims

权利要求：
1. 一种可转位扩孔钻， 其特征在于， 该扩孔钻包含刀体 （2) 和设置在刀体
(2) 上的导向头 ( 1 )；
刀体上设置有双螺旋出屑槽 （201 );
导向头上设置有两个对称的外刃 （101 )。
2. 如权利要求 1所述的可转位扩孔钻，其特征在于，所述的导向头上还设置 有内冷切削液孔 （102)。
3. 如权利要求 1所述的可转位扩孔钻，其特征在于，所述刀体（2)采用 40Cr 钢。
4. 如权利要求 1所述的可转位扩孔钻， 其特征在于， 所述导向头 （1 ) 的直 径比刀体直径大 l~1.2mm。
5. 如权利要求 1所述的可转位扩孔钻，其特征在于，所述双螺旋出屑槽 (201 ) 的宽度为刀体圆周长度的 1/4~1/5， 深度为刀体直径的 1/3。
6. 如权利要求 1所述的可转位扩孔钻， 其特征在于， 所述的外刃 （101 ) 采 用可转位刀片， 刀片对称安装在导向头外恻。
PCT/CN2012/071225 2011-05-10 2012-02-16 一种可转位扩孔钻 WO2012152101A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ZA2013/00782A ZA201300782B (en) 2011-05-10 2013-01-30 Indexable expanding drill

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2011101198266A CN102389992A (zh) 2011-05-10 2011-05-10 一种可转位扩孔钻
CN201110119826.6 2011-05-10

Publications (1)

Publication Number Publication Date
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PL (1) PL222659B1 (zh)
WO (1) WO2012152101A1 (zh)
ZA (1) ZA201300782B (zh)

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Publication number Priority date Publication date Assignee Title
CN116833450A (zh) * 2023-06-20 2023-10-03 哈尔滨理工大学 一种变螺旋角可转位浅孔钻及钻孔方法

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CN103302332A (zh) * 2013-05-31 2013-09-18 王庆 一种加工前轴侧销孔的装置
CN106694962B (zh) * 2017-01-04 2018-10-02 株洲钻石切削刀具股份有限公司 一种钻削刀具

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CN116833450A (zh) * 2023-06-20 2023-10-03 哈尔滨理工大学 一种变螺旋角可转位浅孔钻及钻孔方法

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PL403058A1 (pl) 2014-01-20
ZA201300782B (en) 2014-02-26
PL222659B1 (pl) 2016-08-31
CN102389992A (zh) 2012-03-28

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