CN103157836A - Positive-negative chamfering drilling bit used for processing of plate parts - Google Patents

Positive-negative chamfering drilling bit used for processing of plate parts Download PDF

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Publication number
CN103157836A
CN103157836A CN2013101042986A CN201310104298A CN103157836A CN 103157836 A CN103157836 A CN 103157836A CN 2013101042986 A CN2013101042986 A CN 2013101042986A CN 201310104298 A CN201310104298 A CN 201310104298A CN 103157836 A CN103157836 A CN 103157836A
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CN
China
Prior art keywords
positive
cutting edge
negative
plate parts
head
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Legal status (The legal status 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 status listed.)
Pending
Application number
CN2013101042986A
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Chinese (zh)
Inventor
刘伟
陶志健
周保富
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SUZHOU AHNO CUTTING TOOL TECHNOLOGY Co Ltd
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SUZHOU AHNO CUTTING TOOL TECHNOLOGY Co Ltd
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Publication date
Application filed by SUZHOU AHNO CUTTING TOOL TECHNOLOGY Co Ltd filed Critical SUZHOU AHNO CUTTING TOOL TECHNOLOGY Co Ltd
Priority to CN2013101042986A priority Critical patent/CN103157836A/en
Publication of CN103157836A publication Critical patent/CN103157836A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a positive-negative chamfering drilling bit used for processing of plate parts. The positive-negative chamfering drilling bit used for the processing of the plate parts comprises a handle portion, a neck portion and a head portion, the head portion, the neck portion and the handle portion are coaxial cylinder bodies taking the same central axis as the center, scrap discharge grooves are arranged on the head portion and the neck portion, an entity portion except the scrape discharge grooves is a tool back, a main cutting edge, a negative cutting edge and a positive cutting edge are respectively arranged at positions of the head end face, the middle and the tail end face of the scrape discharge grooves, the main cutting edge is used for drilling the plate parts by drilling a hole, the positive cutting edge processes the an inlet chamfer of a through hole during feeding for the first time, and after the inlet chamfer is processed, the tool is retracted to the position of the negative chamfer edge to mill an outlet chamfer of the through hole out. The positive-negative chamfering drilling bit used for the processing of the plate parts achieves composite processing of drilling, chamfering and negative-chamfering.

Description

The positive and negative chmfer bit that is used for plate parts processing
Technical field
The present invention relates to a kind of efficient high-speed precision cutting tool, relate in particular to a kind of positive and negative chmfer bit for plate parts processing.
Background technology
At present, carbide drill has had raising more than 4 times than the working (machining) efficiency of high-speed steel drill, and in order further to improve working (machining) efficiency, the compound tools such as step drill are also progressively promoted.But in the processing of the hole of the positive and negative chamfering of needs, still need two cutter two order processing modes as shown in Figure 1 and Figure 2.Original technology is upgraded again, then improve the service efficiency of cutter by changing cutter structure, become a new technical problem.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, a kind of positive and negative chmfer bit for plate parts processing is provided, realize boring and tow sides chamfering.
Purpose of the present invention is achieved through the following technical solutions:
the positive and negative chmfer bit that is used for plate parts processing, comprise shank, neck and head, head, neck and shank are the coaxial clyinders centered by same central axis, head and neck are provided with chip area, entity part outside chip area is the knife back, it is characterized in that: at the head of chip area, the endface position at middle part and rear portion is respectively arranged with main cutting edge, anti-chamfering blades and positive chamfering blades, main cutting edge is used for boring plate parts is drilled through, positive chamfering blades when feeding for the first time with the entrance chamfer machining of through hole, after the entrance chamfer machining, withdrawing mills out the outlet chamfering of through hole to anti-chamfering blades place.
Further, the above-mentioned positive and negative chmfer bit that is used for plate parts processing, described chip area is helicla flute or straight trough.
Further, the above-mentioned positive and negative chmfer bit that is used for plate parts processing, described head main cutting edge is curved cutting edge or straight cutting edge.
Again further, the above-mentioned positive and negative chmfer bit that is used for plate parts processing, described neck core is thick is positive wimble structure, and core thickness increments is 3 ~ 5:100.
The substantive distinguishing features that technical solution of the present invention is outstanding and significant progressive being mainly reflected in:
1. according to the difference of machined material, neatly chip area is designed to helicla flute or straight trough, such as when the plastic material such as processing steel part etc., can be designed as the helicla flute pattern; And constantly process the straight trough pattern at processing cast iron or Birmasil;
2. head main cutting edge flexible design becomes two kinds of patterns: curved cutting edge or straight cutting edge; As when the working plastic material, can increase the additional deformation of smear metal by increasing long and bending turnover degree cutting edge of sword, then strengthen the chip breaking ability of plastic material; When the work brittleness material, cutting edge can be polished in alignmently, can significantly improve the anti-ability of collapsing of cutting edge, thus the service life of improving positive and negative chmfer bit;
3. the positive and negative chmfer bit of the present invention is realized boring, chamfering, the Compound Machining of three operations at angle instead, by different processing conditions, structure is optimized, and improves working (machining) efficiency, guarantees machining accuracy.
Description of drawings
Below in conjunction with accompanying drawing, technical solution of the present invention is described further:
Fig. 1: conventional drill is used for the machining sketch chart of boring and chamfering;
Fig. 2: conventional drill is used for the machining sketch chart of the rear chamfering of workpiece counter-rotating;
Fig. 3: drill bit of the present invention is used for the machining sketch chart of boring and chamfering;
Fig. 4: drill bit of the present invention is used for the anti-machining sketch chart that mills out mouthful chamfering;
Fig. 5: the structural representation of drill bit of the present invention;
The B-B cross-sectional schematic of Fig. 6: Fig. 5;
Fig. 7: the schematic diagram of the positive and negative chmfer bit of straight trough type;
Fig. 8: main cutting edge is the schematic diagram of curved cutting edge sword type;
Fig. 9: main cutting edge is the schematic diagram of straight cutting edge sword type;
Figure 10: the fluting schematic diagram of straight trough pattern chip area.
The specific embodiment
Need the technological requirement of Double-side rounding and design positive and negative chamfering composite drill bit for plate parts, be intended to reduce operation, improve working (machining) efficiency.Drill bit can clamped one time, completes boring, three techniques of entrance chamfering and outlet chamfering, compares with traditional handicraft, can reduce clamped one time, improves working (machining) efficiency, reduces the lathe holding time.
As shown in Figure 5, the positive and negative chmfer bit that is used for plate parts processing, comprise shank 1, neck 2 and head 3, head 3, neck 2 and shank 1 are the coaxial clyinders centered by same central axis, and shank 1 is one section higher cylinder of cylindricity, chuck clamping shank is to transmit lathe power, make the cutter rotation and possess cutting power, head 3 and neck 2 are provided with chip area 4, and the entity part outside chip area is the knife back 5, the neck core is thick is positive wimble structure, and core thickness increments is 3 ~ 5:100.The different endface position such as head, middle part and rear portion at chip area are respectively arranged with main cutting edge 6, anti-chamfering blades 7 and positive chamfering blades 8, as shown in Figure 3, Figure 4, main cutting edge 6 is used for boring plate parts is drilled through, positive chamfering blades 8 when feeding for the first time with the entrance chamfer machining of through hole, after the entrance chamfer machining, withdrawing mills out the outlet chamfering of through hole to anti-chamfering blades 7 places.
Chip area 4 is helicla flute or straight trough, as shown in Figure 6, is spiral flute type; As shown in Figure 7, be the straight trough type.
But head main cutting edge flexible design is two kinds of patterns: curved cutting edge or straight cutting edge, and as shown in Figure 8, main cutting edge is curved cutting edge 9; As shown in Figure 9, main cutting edge is straight cutting edge 10.
Head adopts the thick design of less core, to increase chip space, is convenient to chip removal.The thick increase of neck core as shown in Figure 6, is adopted the project organization of the thick positive cone of core, core thickness increments 5:100.
For improving the cutting edge strength of anti-chamfering blades, adopt the mode that axial relief angle increases radial clearance angle that reduces.
Positive and negative chmfer bit is because cutter is outstanding deeply longer, when adopting the whole hard alloy material to make, preferentially selects the Hard alloy of the good toughness such as ISO K30 ~ K40.
Because positive and negative chmfer bit belongs to efficient high-accuracy metal cutting tool, must make on the five-shaft numerical control cutter and tool grinding machine:
1) the drill bit main cutting edge can adopt two kinds of sword types, as Fig. 8 and Fig. 9, selects according to the physical and mechanical properties of machined material;
2) when adopting the helicla flute pattern, can adopt the 1A1 parallel grinding wheel of standard, the setting by groove anterior angle, cutting drift angle obtains satisfied flute profile, and should grind the thick positive cone of core this moment at neck, to guarantee cutter hub intensity;
3) when adopting the straight trough pattern, employing can be adopted oblique angle 1V1 emery wheel usually, and is trimmed to 105 ° of grinding faces, to obtain stable chip area shape, as Figure 10.
Positive and negative chmfer bit is applicable to the rigidity such as machining center lathe preferably, machined material 45 carbon constructional quality steels, and hardness HB250 ~ 275, concrete cutting parameter sees Table 1.
Table 1
According to the difference of machined material, neatly chip area is designed to helicla flute or straight trough, such as when the plastic material such as processing steel part etc., can be designed as the helicla flute pattern; And constantly process the straight trough pattern at processing cast iron or Birmasil.Head main cutting edge flexible design becomes two kinds of patterns: curved cutting edge or straight cutting edge; As when the working plastic material, can increase the additional deformation of smear metal by increasing long and bending turnover degree cutting edge of sword, then strengthen the chip breaking ability of plastic material; When the work brittleness material, cutting edge can be polished in alignmently, can significantly improve the anti-ability of collapsing of cutting edge, thus the service life of improving positive and negative chmfer bit.
In sum, the positive and negative chmfer bit of the present invention is realized boring, chamfering, the Compound Machining of three operations at angle instead, by different processing conditions, structure is optimized, and improves working (machining) efficiency, guarantees machining accuracy.
What need to understand is: the above is only the preferred embodiment of the present invention; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (4)

1. be used for the positive and negative chmfer bit of plate parts processing, comprise shank, neck and head, head, neck and shank are the coaxial clyinders centered by same central axis, head and neck are provided with chip area, entity part outside chip area is the knife back, it is characterized in that: at the head of chip area, the endface position at middle part and rear portion is respectively arranged with main cutting edge, anti-chamfering blades and positive chamfering blades, main cutting edge is used for boring plate parts is drilled through, positive chamfering blades when feeding for the first time with the entrance chamfer machining of through hole, after the entrance chamfer machining, withdrawing mills out the outlet chamfering of through hole to anti-chamfering blades place.
2. the positive and negative chmfer bit for plate parts processing according to claim 1, it is characterized in that: described chip area is helicla flute or straight trough.
3. the positive and negative chmfer bit for plate parts processing according to claim 1, it is characterized in that: described head main cutting edge is curved cutting edge or straight cutting edge.
4. the positive and negative chmfer bit for plate parts processing according to claim 1 is characterized in that: described neck core is thick is positive wimble structure, and core thickness increments is 3 ~ 5:100.
CN2013101042986A 2013-03-28 2013-03-28 Positive-negative chamfering drilling bit used for processing of plate parts Pending CN103157836A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103273121A (en) * 2013-06-24 2013-09-04 江苏飞达钻头股份有限公司 Twist drill with high cutting performance
CN104191016A (en) * 2014-08-27 2014-12-10 江苏万盛铸造有限公司 35-degrees inverted-chamfering milling cutter
CN104325180A (en) * 2014-10-16 2015-02-04 芜湖中铁科吉富轨道有限公司 Cutting tool for drilling and chamfering steel rail and machining technology thereof
CN104801748A (en) * 2015-03-31 2015-07-29 徐州重型机械有限公司 Reverse-milling processing method
CN105057749A (en) * 2015-08-31 2015-11-18 丹阳市亚邦精密机械有限公司 Upper and lower chamfering cutter
CN107695404A (en) * 2017-11-20 2018-02-16 中山市园丰精密刃具有限公司 A kind of high ray machine forming cutter
CN108465857A (en) * 2018-05-03 2018-08-31 广东鼎泰高科精工科技有限公司 A kind of left-right rotary combination rose reamer
CN108637330A (en) * 2018-05-04 2018-10-12 大连理工大学 A kind of forward direction of composite material-feed reversing method for helically milling hole
CN109332814A (en) * 2018-11-30 2019-02-15 雄邦压铸(南通)有限公司 A kind of processing method of automobile clutch oil-through hole
CN109352037A (en) * 2018-11-30 2019-02-19 东风设备制造有限公司 With positive and negative chamfering through-hole processing compound tool

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2061101U (en) * 1990-01-15 1990-08-29 冶金工业部攀枝花钢铁公司 Multifunctional drilling tool
FR2913619A3 (en) * 2007-03-16 2008-09-19 Renault Sas Multitasking tool for e.g. drilling threaded hole on engine part of motor vehicle, has chamfering part connected to body, and tapping cylinder with outer diameter that corresponds to inner diameter of hole
CN201596802U (en) * 2009-09-09 2010-10-06 孙生强 Multipurpose chamfering device
CN102303151A (en) * 2011-07-28 2012-01-04 锑玛(苏州)精密工具有限公司 Powerful drill
CN102554323A (en) * 2012-03-21 2012-07-11 锑玛(苏州)精密工具有限公司 Straight fluted drill
CN102847996A (en) * 2012-09-27 2013-01-02 芜湖伯特利汽车安全系统有限公司 Drill bit applied to machining process
CN203281947U (en) * 2013-03-28 2013-11-13 苏州阿诺精密切削技术股份有限公司 Positive and negative chamfering bit for machining plate parts

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2061101U (en) * 1990-01-15 1990-08-29 冶金工业部攀枝花钢铁公司 Multifunctional drilling tool
FR2913619A3 (en) * 2007-03-16 2008-09-19 Renault Sas Multitasking tool for e.g. drilling threaded hole on engine part of motor vehicle, has chamfering part connected to body, and tapping cylinder with outer diameter that corresponds to inner diameter of hole
CN201596802U (en) * 2009-09-09 2010-10-06 孙生强 Multipurpose chamfering device
CN102303151A (en) * 2011-07-28 2012-01-04 锑玛(苏州)精密工具有限公司 Powerful drill
CN102554323A (en) * 2012-03-21 2012-07-11 锑玛(苏州)精密工具有限公司 Straight fluted drill
CN102847996A (en) * 2012-09-27 2013-01-02 芜湖伯特利汽车安全系统有限公司 Drill bit applied to machining process
CN203281947U (en) * 2013-03-28 2013-11-13 苏州阿诺精密切削技术股份有限公司 Positive and negative chamfering bit for machining plate parts

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103273121A (en) * 2013-06-24 2013-09-04 江苏飞达钻头股份有限公司 Twist drill with high cutting performance
CN104191016A (en) * 2014-08-27 2014-12-10 江苏万盛铸造有限公司 35-degrees inverted-chamfering milling cutter
CN104325180A (en) * 2014-10-16 2015-02-04 芜湖中铁科吉富轨道有限公司 Cutting tool for drilling and chamfering steel rail and machining technology thereof
CN104801748A (en) * 2015-03-31 2015-07-29 徐州重型机械有限公司 Reverse-milling processing method
CN105057749A (en) * 2015-08-31 2015-11-18 丹阳市亚邦精密机械有限公司 Upper and lower chamfering cutter
CN107695404A (en) * 2017-11-20 2018-02-16 中山市园丰精密刃具有限公司 A kind of high ray machine forming cutter
CN107695404B (en) * 2017-11-20 2019-07-19 中山市园丰精密刃具有限公司 A kind of high ray machine forming cutter
CN108465857A (en) * 2018-05-03 2018-08-31 广东鼎泰高科精工科技有限公司 A kind of left-right rotary combination rose reamer
CN108637330A (en) * 2018-05-04 2018-10-12 大连理工大学 A kind of forward direction of composite material-feed reversing method for helically milling hole
CN109332814A (en) * 2018-11-30 2019-02-15 雄邦压铸(南通)有限公司 A kind of processing method of automobile clutch oil-through hole
CN109352037A (en) * 2018-11-30 2019-02-19 东风设备制造有限公司 With positive and negative chamfering through-hole processing compound tool

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Application publication date: 20130619