CN205519810U - Special chip removal ladder downwards of steel part bores - Google Patents

Special chip removal ladder downwards of steel part bores Download PDF

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Publication number
CN205519810U
CN205519810U CN201620354551.2U CN201620354551U CN205519810U CN 205519810 U CN205519810 U CN 205519810U CN 201620354551 U CN201620354551 U CN 201620354551U CN 205519810 U CN205519810 U CN 205519810U
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CN
China
Prior art keywords
knife
handle
chip removal
blade
ladder
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Active
Application number
CN201620354551.2U
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Chinese (zh)
Inventor
李振丰
孔小波
周攀科
奚旭东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Antimony (suzhou) Precision Tool Ltd By Share Ltd
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Antimony (suzhou) Precision Tool Ltd By Share Ltd
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Application filed by Antimony (suzhou) Precision Tool Ltd By Share Ltd filed Critical Antimony (suzhou) Precision Tool Ltd By Share Ltd
Priority to CN201620354551.2U priority Critical patent/CN205519810U/en
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Publication of CN205519810U publication Critical patent/CN205519810U/en
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Abstract

The utility model discloses a special chip removal ladder downwards of steel part bores, include: handle of a knife, cutting part and neck, the diameter of handle of a knife is greater than the diameter of cutting part afterbody, the handle of a knife top is equipped with the solid groove of side, the cutting part is equipped with the drill bit in proper order from the head to the afterbody, apex angle cutting edge, chamfered edge, ladder angle, first ladder back, chip groove and second ladder back, the apex angle of drill bit is 139, handle of a knife side central line top is equipped with the coolant liquid guiding gutter, the coolant liquid guiding gutter runs through the design in the middle of end part of the tool holder and chip groove. The utility model discloses the chip groove designs for the levogyration, utilize to revolve to realizing chip removal function down, and chip removal groove space is big, the chip removal is smooth and easy, cutting stability, and during the chip removal, the iron fillings scratch is surperficial reductions in, and the improvement is by machined surface finish.

Description

The special downward chip removal step drill of steel part
Technical field
This utility model relates to Machining Technology field, specifically, is the special downward chip removal step drill of steel part.
Background technology
Drill bit, as an important ingredient in machining cutter, is mainly used in hole machined, at any time machinery row The development of industry, the date of delivery of crudy, process reliability, working (machining) efficiency and the cutter of product is proposed higher by user Requirement.In drilling process, need to process the hole of different-diameter, it is common that use branched drill bit to carry out realizing difference straight The hole machined in footpath, step drill is mainly used in the sheet metal Drilling operation within 3mm, and a drill bit can substitute for branched drill bit to be made With, process the hole of different-diameter as required, and macropore can be realized disposably machine, it is not necessary to more bit change and beat location Holes etc., are not easily broken compared with common fluted drill, complete deburring, chamfering, open circular hole etc., and therefore step drill replaces common boring Head will substantially increase work efficiency for hole machined, but in actual mechanical process, chip area is deposited on blade, chip removal Have some setbacks, cutting instability, chip surface scratch, affect the fineness of surface of the work, on the other hand handle of a knife directly pastes with main shaft Close, clamping the most repeatedly, handle of a knife serious wear so that cutter safety and reliability reduces, shorten cutting-tool's used life.
Utility model content
Utility model purpose: for the problem and shortage of above-mentioned existence of the prior art, the purpose of this utility model is The special downward chip removal step drill of steel part is provided.
Technical scheme: for reaching above-mentioned purpose, the special downward chip removal step drill of steel part described in the utility model, including: Handle of a knife, blade and cervical region, the diameter of described handle of a knife is more than the diameter of blade afterbody, and described handle of a knife is arranged over the solid groove in side, described Blade is sequentially provided with drill bit, drift angle cutting edge, chamfered edge, ladder angle, the first ladder back, chip area and second from head to afterbody Ladder back, the drift angle of described drill bit is 139 °, and described handle of a knife center side line is arranged over coolant guiding gutter, described cooling Liquid guiding gutter runs through design in the middle of handle of a knife end with chip area.
Further, described first ladder back and the second ladder back edge are equipped with main support land, and described first Ladder back and the second centre position, ladder back are equipped with auxiliary and support land.Main support land and auxiliary support setting of land In respect of helping when processing workpiece, keep the gap with hole machined surface, contribute to controlling friction and by fricative heat, This external series gap also can make coolant flow into drill bit cutting edge, reduces the generation of heat further;The most main support land and auxiliary Support land synergism, also helps drilling stable, increases the intensity of drill bit and prevents drill bit adhesion.
Further, described handle of a knife, cervical region and blade are one-body molded, and described handle of a knife and blade coaxial design.With machine When bed main shaft cooperation runs up, it is possible to well protect cutter, extend cutting-tool's used life.
Further, described handle of a knife and blade are Hardmetal materials and make.Hard alloy
Material hardness is high, wear-resisting, intensity and a series of premium properties such as toughness is preferable, heat-resisting, corrosion-resistant, particularly it High rigidity and wearability, even if being also held essentially constant at a temperature of 500 DEG C, still have the highest hardness when 1000 DEG C.
Further, described handle of a knife and edge portion surfaces are equipped with protective layer, described protective layer from
In be followed successively by corrosion resistant layer, anti oxidation layer and wearing layer to outward.
Further, the distance of described blade head to afterbody is 66-67mm, a length of 62-63mm of described handle of a knife.
Technique scheme is it can be seen that the beneficial effects of the utility model are:
(1) the special downward chip removal step drill of steel part described in the utility model, chip area is left-handed design, utilizes rotation direction real Now chip removal function, chip discharge groove is big, chip removal is smooth and easy, and cutting is stable, in minimizing during chip removal, iron filings surface scratch, improves quilt Machined surface surface smoothness.
(2) the special downward chip removal step drill of steel part described in the utility model, main support land and auxiliary support land It is designed with and helps, when processing workpiece, keep the gap with hole machined surface, contribute to controlling friction and by fricative heat Amount, this external series gap also can make coolant flow into drill bit cutting edge, reduce the generation of heat further;The most main support land and auxiliary Support land synergism, also help drilling stable, improve circularity and the precision size of processed face, increase the strong of drill bit Spend and prevent drill bit adhesion.
(3) the special downward chip removal step drill of steel part described in the utility model, coolant guiding gutter runs through design at handle of a knife In the middle of end and chip area, increase cooling effect, the heat produced when reducing tool sharpening, extend cutting-tool's used life.
(4) the special downward chip removal step drill of steel part described in the utility model, drift angle designs chamfered edge after cutting sword, centering is steady, Cutting brisk, chip breaking is light.
(5) the special downward chip removal step drill of steel part described in the utility model, handle of a knife arranges the solid groove in side and contributes to and main shaft Laminating, tool life, clamping precision is high repeatedly.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the left view of Fig. 1.
In figure: 1-handle of a knife, 2-blade, 3-cervical region, the solid groove in 11-side, 12 coolant guiding gutters, 21-drill bit, 22-drift angle are cut Cut sword, 23-chamfered edge, 24-ladder angle, 25-the first ladder back, 26-chip area, 27-the second ladder back, 28-main support sword Band, 29-auxiliary supports land.
Detailed description of the invention
Below in conjunction with the accompanying drawings and specific embodiment, it is further elucidated with this utility model.
Embodiment
The special downward chip removal step drill of steel part as shown in Figure 1, including: handle of a knife 1, blade 2 and cervical region 3, described handle of a knife 1 Diameter is more than the diameter of blade 2 afterbody, and described handle of a knife 1 is arranged over the solid groove 11 in side, and described blade 2 sets from head to afterbody successively There are drill bit 21, drift angle cutting edge 22, chamfered edge 23, the 24, first ladder back 25, ladder angle, chip area 26 and the second ladder back 27, the drift angle of described drill bit 21 is 139 °, and described handle of a knife 1 center side line is arranged over coolant guiding gutter 12, described cooling Liquid guiding gutter 12 runs through design in the middle of handle of a knife 1 end with chip area 26.
Described in the present embodiment, the first ladder back 25 and the second edge, ladder back 27 are equipped with main support land 28, institute State the first ladder back 25 and the second centre position, ladder back 27 to be equipped with auxiliary and support land 29.
Handle of a knife 1 described in the present embodiment, cervical region 3 and blade 2 are one-body molded, and described cutter
Handle 1 and blade 2 coaxial design.
Handle of a knife 1 described in the present embodiment and blade 2 are Hardmetal materials and make.
Handle of a knife 1 described in the present embodiment and blade 2 surface are equipped with protective layer, described protection
Layer is followed successively by corrosion resistant layer, anti oxidation layer and wearing layer from inside to outside.
The head of blade 2 described in the present embodiment is 66-67mm to the distance of afterbody, described cutter
The a length of 62-63mm of handle 1.
Embodiment is merely to illustrate this utility model rather than limits scope of the present utility model, is reading this practicality After novel, those skilled in the art all fall within what the application claims were limited to various equivalences of the present utility model Scope.

Claims (5)

1. the special downward chip removal step drill of steel part, it is characterised in that: including: handle of a knife (1), blade (2) and cervical region (3), described cutter The diameter of handle (1) is more than the diameter of blade (2) afterbody, and described handle of a knife (1) is arranged over the solid groove (11) in side, described blade (2) from Head is sequentially provided with drill bit (21), drift angle cutting edge (22), chamfered edge (23), ladder angle (24), the first ladder back to afterbody (25), chip area (26) and the second ladder back (27), the drift angle of described drill bit (21) is 139 °, in described handle of a knife (1) side Heart line is also arranged above coolant guiding gutter (12), and described coolant guiding gutter (12) runs through design handle of a knife (1) end and row In the middle of bits groove (26), described first ladder back (25) and the second ladder back (25) edge are equipped with main support land (28), Described first ladder back (25) and the second ladder back (25) centre position are equipped with auxiliary and support land (29).
The special downward chip removal step drill of steel part the most according to claim 1, it is characterised in that: described handle of a knife (1), cervical region And blade (2) is one-body molded, and described handle of a knife (1) and blade (2) coaxial design (3).
The special downward chip removal step drill of steel part the most according to claim 1, it is special
Levy and be: described handle of a knife (1) and blade (2) are Hardmetal materials and make.
The special downward chip removal step drill of steel part the most according to claim 1, it is characterised in that: described handle of a knife (1) and blade (2) surface is equipped with protective layer, and described protective layer is followed successively by corrosion resistant layer, anti oxidation layer and wearing layer from inside to outside.
The special downward chip removal step drill of steel part the most according to claim 1, it is characterised in that: described blade (2) head arrives The distance of afterbody is 66-67mm, a length of 62-63mm of described handle of a knife (1).
CN201620354551.2U 2016-04-25 2016-04-25 Special chip removal ladder downwards of steel part bores Active CN205519810U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620354551.2U CN205519810U (en) 2016-04-25 2016-04-25 Special chip removal ladder downwards of steel part bores

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620354551.2U CN205519810U (en) 2016-04-25 2016-04-25 Special chip removal ladder downwards of steel part bores

Publications (1)

Publication Number Publication Date
CN205519810U true CN205519810U (en) 2016-08-31

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107900421A (en) * 2017-12-27 2018-04-13 苏州阿诺精密切削技术有限公司 For processing the ladder drilling reamer of aircraft skin rivet hole
CN108480722A (en) * 2018-06-11 2018-09-04 常熟市磊王合金工具有限公司 A kind of interior cold subland drill of shank grooving lap guard bits
CN108608040A (en) * 2018-05-10 2018-10-02 大连理工大学 For composite material and its micro- serrated knife tool of the double ladders of the perpendicular sword of laminated construction high quality drilling
CN107900421B (en) * 2017-12-27 2024-04-02 苏州阿诺精密切削技术有限公司 Stepped drilling reamer for machining aircraft skin rivet holes

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107900421A (en) * 2017-12-27 2018-04-13 苏州阿诺精密切削技术有限公司 For processing the ladder drilling reamer of aircraft skin rivet hole
CN107900421B (en) * 2017-12-27 2024-04-02 苏州阿诺精密切削技术有限公司 Stepped drilling reamer for machining aircraft skin rivet holes
CN108608040A (en) * 2018-05-10 2018-10-02 大连理工大学 For composite material and its micro- serrated knife tool of the double ladders of the perpendicular sword of laminated construction high quality drilling
CN108608040B (en) * 2018-05-10 2020-04-07 大连理工大学 Vertical-edge double-step micro-tooth cutter for high-quality hole making of composite material and laminated structure of composite material
CN108480722A (en) * 2018-06-11 2018-09-04 常熟市磊王合金工具有限公司 A kind of interior cold subland drill of shank grooving lap guard bits

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