CN104400079A - Twist bit for carburizing steel - Google Patents
Twist bit for carburizing steel Download PDFInfo
- Publication number
- CN104400079A CN104400079A CN201410707191.5A CN201410707191A CN104400079A CN 104400079 A CN104400079 A CN 104400079A CN 201410707191 A CN201410707191 A CN 201410707191A CN 104400079 A CN104400079 A CN 104400079A
- Authority
- CN
- China
- Prior art keywords
- edge
- main cutting
- cutting edge
- forms
- carburizing steel
- Prior art date
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/02—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
- B23B2251/40—Flutes, i.e. chip conveying grooves
- B23B2251/408—Spiral grooves
Abstract
The invention relates to a twist bit for carburizing steel. A cutter body is provided with a spiral chip discharging groove; the cross section of the chip discharging groove is shaped like a multiple rolling type curve; two rear cutter surfaces are ground at the position of the end surface of the head portion of the cutter body; an intersection line of the rear cutter surfaces and the chip discharging groove forms into a main cutting edge which is shaped like a multiple bending edge; an intersection line of the two rear cutter surfaces forms into a cross edge; a position of the cutter body, which is close to the chip discharging groove, forms into an edge; an inner edge is ground between the main cutting edge and the cross edge; an intersection point of the main cutting edge and the edge is a cutter point; the continuous transition is formed between the inner edge and the main cutting edge. The multiple bending type main cutting edge is formed due to the multiple rolling type chip discharging groove, multiple bending shaped chips can be obtained during cutting due to the edge shape, namely that a plurality of reinforcing ribs are etched on the cross section of the chips, and accordingly the strength of the chips is improved, the machining reinforcement effect is apparent. The chip breaking is easy along with the improvement of the strength of the chips, the chip discharging is smooth, and accordingly the efficient precision drilling of the carburizing steel is implemented.
Description
Technical field
The present invention relates to a kind of cutter of high-speed and high-efficiency cutting metal, particularly relating to a kind of spiral bit for cutting carburizing steel.
Background technology
Carburizing steel has good processability, and machining deformation is small, and anti-fatigue performance is fairly good.Owing to having high superiority of effectiveness, be mainly used in the various peculiar part position of gear, axle class, piston type spare and accessory parts and carplane.Because the phosphorus content of carburizing steel is lower, usually not higher than 0.2%, material elongation >10% before heat treatment, in machining, especially not easily chip breaking in the drilling processing before heat treatment, the reason very easily owing to twining bits causes that processing is interrupted, the bad and breaking accident of quality.
In order to ensure to promote working (machining) efficiency, realizing high-efficient cutting, being necessary easily to twine a kind of new drill of bits material development for carburizing steel.
Summary of the invention
The object of the invention is the deficiency overcoming prior art existence, a kind of spiral bit for drilling carburizing steel is provided.
Object of the present invention is achieved through the following technical solutions:
Carburizing steel spiral bit, comprise cutter hub and shank, cutter hub and shank are the coaxial clyinders centered by same central axis, feature is: described cutter hub offers helical form chip area, the cross section of chip area is multiple flighting schedule curve shape, the endface position mill of cutter head body has knife face behind two places, the intersection of rear knife face and chip area forms main cutting edge, main cutting edge is multiple dioptric type tooth shape, behind two places, the intersection of knife face forms chisel edge, cutter hub forms seamed edge near the position of chip area, between main cutting edge and chisel edge, mill has inner edge, the intersection point of main cutting edge and seamed edge is point of a knife, inner edge and main cutting edge continuous transition.
Further, above-mentioned carburizing steel spiral bit, wherein, described main cutting edge is the dioptric type tooth shape of three peak two paddy forms.
Further, above-mentioned carburizing steel spiral bit, wherein, described inner edge and main cutting edge continuous transition are without cusp.
Substantive distinguishing features and the progress of technical solution of the present invention are mainly reflected in:
Carburizing steel spiral bit designs multiple flighting schedule chip area, and then form multiple dioptric type main cutting edge, this tooth shape is when cutting, the chip of " multiple complications " form can be obtained, be equivalent to depict many places reinforcement at chip section, then improve chip intensity, make work strengthening effect more obvious.Along with the raising of chip intensity, chip breaking becomes easy, and chip removal is more smooth and easy, realizes high-efficiency and precision drilling carburizing steel.Be applicable to very much the medium carbon steel such as 45#, 40Cr and the drilling processing of medium carbon alloy steel under normalized condition.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, technical solution of the present invention is described further:
Fig. 1: organigram of the present invention;
Fig. 2: the schematic cross-section of chip area;
Fig. 3: the organigram of cutter head body;
Fig. 4: the schematic diagram of main cutting edge.
Detailed description of the invention
As shown in Figure 1, carburizing steel spiral bit, comprise cutter hub 1 and shank 2, cutter hub 1 and shank 2 are the coaxial clyinders centered by same central axis, shank 2 is one section of cylinder that circle precision is higher, clamp shank 2 to transmit machine power by handle of a knife during use, make cutter rotate and possess cutting power.Cutter hub 1 grinds spiral helicine chip area 3, knife face 4 after the endface position mill of cutter head body has two places, rear knife face 4 forms main cutting edge 5 with the intersection of chip area 3, behind two places, the intersection of knife face 4 forms chisel edge 6, unnecessary part is ground off by clear limit technique by cutter hub 1 near the position of chip area 3 at cutter hub 1, only retain a spiral helicine face of cylinder, form seamed edge 7.
As shown in Figure 2, the cross section of chip area 3 is multiple flighting schedule curve shape, grinds formation by formed grinding wheel.
As shown in Figure 3, between main cutting edge 5 and chisel edge 6, grind inner edge 9, be used for revising chisel edge further, to improve the centering ability of drill bit.The intersection point of main cutting edge 5 and seamed edge 7 is point of a knife 8, and inner edge 9 and main cutting edge 5 continuous transition are without cusp.By adjustment inner edge 9, relative position between chisel edge 6 and main cutting edge 5 three and angle, Chip Morphology can be improved and be beneficial to chip breaking.
As shown in Figure 4, main cutting edge 5 is multiple dioptric type tooth shape, usually adopts 2.5 heavy types, i.e. the form of three peak A two paddy B.
In sum, carburizing steel spiral bit of the present invention designs multiple flighting schedule chip area, and then form multiple dioptric type main cutting edge, this tooth shape is when cutting, the chip of " multiple complications " form can be obtained, be equivalent to depict many places reinforcement at chip section, then improve chip intensity, make work strengthening effect more obvious.Along with the raising of chip intensity, chip breaking becomes easy, and chip removal is more smooth and easy, realizes high-efficiency and precision drilling carburizing steel.Be applicable to very much the medium carbon steel such as 45#, 40Cr and the drilling processing of medium carbon alloy steel under normalized condition.
It is emphasized that: be only preferred embodiment of the present invention above, not any pro forma restriction is done to the present invention, every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (3)
1. carburizing steel spiral bit, comprise cutter hub and shank, cutter hub and shank are the coaxial clyinders centered by same central axis, it is characterized in that: described cutter hub offers helical form chip area, the cross section of chip area is multiple flighting schedule curve shape, the endface position mill of cutter head body has knife face behind two places, the intersection of rear knife face and chip area forms main cutting edge, main cutting edge is multiple dioptric type tooth shape, behind two places, the intersection of knife face forms chisel edge, cutter hub forms seamed edge near the position of chip area, between main cutting edge and chisel edge, mill has inner edge, the intersection point of main cutting edge and seamed edge is point of a knife, inner edge and main cutting edge continuous transition.
2. carburizing steel spiral bit according to claim 1, is characterized in that: described main cutting edge is the dioptric type tooth shape of three peak two paddy forms.
3. carburizing steel spiral bit according to claim 1, is characterized in that: described inner edge and main cutting edge continuous transition are without cusp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410707191.5A CN104400079A (en) | 2014-11-27 | 2014-11-27 | Twist bit for carburizing steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410707191.5A CN104400079A (en) | 2014-11-27 | 2014-11-27 | Twist bit for carburizing steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104400079A true CN104400079A (en) | 2015-03-11 |
Family
ID=52637779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410707191.5A Pending CN104400079A (en) | 2014-11-27 | 2014-11-27 | Twist bit for carburizing steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104400079A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077767A (en) * | 2016-07-28 | 2016-11-09 | 山东大学 | There is the chip-breaking drill bit of S type blade based on Logistic curve |
| CN113878136A (en) * | 2021-09-09 | 2022-01-04 | 中国航发南方工业有限公司 | Method for processing deep inclined two-section hole on engine case |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB452750A (en) * | 1935-12-13 | 1936-08-28 | Albert Edward Shiner | Improvements relating to twist drills |
| US4802799A (en) * | 1987-06-10 | 1989-02-07 | Marken Tool Company | Drill bit |
| DE102008059588A1 (en) * | 2008-11-28 | 2010-06-02 | Horst Wolf | Drilling tool for removal of splinter, has machining area running from central point till to cutting corner, whose profile runs in longitudinal direction of area so that machining effect is obtained at cutter, during re-sharpening of tool |
| CN103737073A (en) * | 2014-01-21 | 2014-04-23 | 华中科技大学 | Twist drill with grooved front tool faces and bent blades |
| CN204248042U (en) * | 2014-11-27 | 2015-04-08 | 苏州阿诺精密切削技术股份有限公司 | Carburizing steel spiral bit |
-
2014
- 2014-11-27 CN CN201410707191.5A patent/CN104400079A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB452750A (en) * | 1935-12-13 | 1936-08-28 | Albert Edward Shiner | Improvements relating to twist drills |
| US4802799A (en) * | 1987-06-10 | 1989-02-07 | Marken Tool Company | Drill bit |
| DE102008059588A1 (en) * | 2008-11-28 | 2010-06-02 | Horst Wolf | Drilling tool for removal of splinter, has machining area running from central point till to cutting corner, whose profile runs in longitudinal direction of area so that machining effect is obtained at cutter, during re-sharpening of tool |
| CN103737073A (en) * | 2014-01-21 | 2014-04-23 | 华中科技大学 | Twist drill with grooved front tool faces and bent blades |
| CN204248042U (en) * | 2014-11-27 | 2015-04-08 | 苏州阿诺精密切削技术股份有限公司 | Carburizing steel spiral bit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077767A (en) * | 2016-07-28 | 2016-11-09 | 山东大学 | There is the chip-breaking drill bit of S type blade based on Logistic curve |
| CN106077767B (en) * | 2016-07-28 | 2018-03-30 | 山东大学 | There is the chip-breaking drill bit of S type blades based on Logistic curves |
| CN113878136A (en) * | 2021-09-09 | 2022-01-04 | 中国航发南方工业有限公司 | Method for processing deep inclined two-section hole on engine case |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Suzhou City, Jiangsu province 215021 Industrial Park Kuatang subarea Baoda Road No. 8 Applicant after: Suzhou Ahno Precision Cutting Technology Co., Ltd. Address before: Suzhou City, Jiangsu province 215021 Industrial Park Kuatang subarea Baoda Road No. 8 Applicant before: Suzhou Ahno Cutting Tool Technology Co., Ltd. |
|
| COR | Change of bibliographic data | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150311 |
|
| WD01 | Invention patent application deemed withdrawn after publication |