CN105033330A - Low-torque self-correction drill with reinforced drill point - Google Patents
Low-torque self-correction drill with reinforced drill point Download PDFInfo
- Publication number
- CN105033330A CN105033330A CN201510555973.6A CN201510555973A CN105033330A CN 105033330 A CN105033330 A CN 105033330A CN 201510555973 A CN201510555973 A CN 201510555973A CN 105033330 A CN105033330 A CN 105033330A
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- China
- Prior art keywords
- correction
- face
- edge
- apex point
- chip area
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Classifications
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- 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
- B23B2251/18—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
- B23B2251/40—Flutes, i.e. chip conveying grooves
- B23B2251/408—Spiral grooves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
The invention relates a low-torque self-correction drill with a reinforced drill point. A spiral chip groove is formed in a tool body. A rear tool face is arranged on the end face of the head of the tool body in a grinded manner. A main cutting edge is formed by the intersecting line of the rear tool face and the chip groove. The chip groove is of a groove type structure that the main cutting edge is concaved towards the axis of the drill point. A reverse arc reinforcing face is arranged on the outer edge of the chip groove. A solid part except the chip groove serves as a tool back. A guide edge band and a correction edge band are arranged on the tool back. A drop exists between the guide edge band and the correction edge band. The chip groove and the tool back are connected in the radial direction to form an end edge. The problem of large machining loads is solved, and the torque of a twist drill is effectively lowered. Due to the fact that the arc reinforcing face exists on the outer edge of the groove type, the drill point and the edge bands are not prone to cracking, the double spiral drop edge bands have the guide and correction functions in the cutting direction, and high machining efficiency is achieved.
Description
Technical field
The present invention relates to a kind of low moment of torsion apex point and strengthen self-correction brill, belong to the superhard precision cutting tool technical field of high speed.
Background technology
The performance of grooved to cutter of fluted drill plays a decisive role, and grooved traditional at present mainly contains two large classes: parabolic type and J type, and the common ground of this two classes grooved is that cutting edge protrudes from apex point axis.
Drill bit shaft is born to power primarily of chisel edge, and moment of torsion is born primarily of main cutting edge; The main distinction of traditional parabolic type and J type groove is some difference of sharpness of cutting edge, but its common shortcoming be each point place on main cutting edge anterior angle numerical value inside and outside differ greatly, the main cutting edge anterior angle of drill bit outer rim is larger, easily cause tipping, and the anterior angle near unbearable place is negative, cause chip deformation large, cutting resistance is large.
Knuckle is one of major part on steering axle of automobile, and vehicle steadily can be made to travel and sensitive transmission travel direction, and the function of knuckle bears automotive front load, support and drives front-wheel to make motor turning around stub rotation.Knuckle is common use material with forged steel, and owing to being steel alloy, this material has higher intensity and hardness.Due to the labyrinth that knuckle is special, in mechanical processing process, whole workpiece cannot realize good clamping, when especially processing earhole on Digit Control Machine Tool, because workpiece overhangs long, adding man-hour excessive cutting resistance can make workpiece and cutter produce vibration, and this makes traditional fluted drill be easy to collapse and damage and lost efficacy.
Summary of the invention
The object of the invention is the deficiency overcoming prior art existence, there is provided a kind of low moment of torsion apex point to strengthen self-correction to bore, take into account point of a knife intensity when being intended to moment of torsion and the cutting resistance reducing cutter, cutting direction can be controlled very well simultaneously, greatly improve stability and the security of mechanical processing technique.
Object of the present invention is achieved through the following technical solutions:
Low moment of torsion apex point is strengthened self-correction and is bored, 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 endface position mill of cutter head body has rear knife face, the intersection of rear knife face and chip area forms main cutting edge, chip area is that main cutting edge is recessed in the trench structure of apex point axis, , entity part outside chip area is the knife back, the knife back is provided with guiding land and revises land, between the face of cylinder at guiding land and correction land place, there is drop, described chip area and the knife back connect in radial directions to being formed and hold sword.
Further, above-mentioned low moment of torsion apex point is strengthened self-correction and is bored, and wherein, has the drop of 0.002mm ~ 0.007mm between described guiding land and the face of cylinder revising land place.
Further, above-mentioned low moment of torsion apex point is strengthened self-correction and is bored, and wherein, described chip area anterior angle cutting-in line and two apex point lines form core height angle, and core high angular range is 3 ° ~ 8 °.
Further, above-mentioned low moment of torsion apex point is strengthened self-correction and is bored, and wherein, the curved shape in cross section of described chip area, its curve is made up of the arc section of four different curvature radius and straightway.
Further, above-mentioned low moment of torsion apex point is strengthened self-correction and is bored, and wherein, the width that described anti-circular arc strengthens anti-its radial direction of circular arc in face is the diameter at edge part of 0.03 times.
Further, above-mentioned low moment of torsion apex point is strengthened self-correction and is bored, and wherein, described end sword comprises knife face after chisel edge and circular arc.
Again further, above-mentioned low moment of torsion apex point is strengthened self-correction and is bored, and wherein, the length of described chisel edge is the diameter at edge part of 0.8 ~ 1.0 times.
Again further, above-mentioned low moment of torsion apex point is strengthened self-correction and is bored, and wherein, after described circular arc, knife face is knife face after the arc surface type connected with main cutting edge, and after arc surface type, after knife face, angular region is 8 ° ~ 12 °.
The substantive distinguishing features that technical solution of the present invention is outstanding and significant progress are mainly reflected in:
1. adopt cutting edge recessed in the chip area trench structure of apex point axis; In the main cutting of this grooved, each point all has positive rake angle, can strengthen main cutting edge sharpness, effectively reduces load when cutting; Peripheral edge portion with time slot arranges circular arc and strengthens face, to prevent collapsing of the apex point that causes under high impact or helical land scarce; This flute profile solves the large problem of traditional fluted drill processing load, effectively reduces the moment of torsion of fluted drill;
2. hold sword to adopt knife face pattern after little chisel edge circular arc, little chisel edge can ensure that the centering ability of drill bit reduces the axial force of drill bit simultaneously, and after circular arc, knife face strengthens edge strength;
3. the knife back arranges double helix drop Double-margin, drop is had between guiding land and the face of cylinder revising land place, guiding land mainly controls bit cutting direction in working angles, and when cutter generation tool le offset, revise the guiding that namely land participates in cutting direction, play the effect revising direction instantaneously;
4. the range of work of this fluted drill is wider, especially under the hole machined occasion of piece-holder shakiness, its advantage is more obvious, its cutting edge is sharp, face is strengthened because flute profile outer rim exists circular arc, apex point and land not easily collapse scarce, double helix drop land plays a part to guide and revise to cutting direction again, compensate for the defect of traditional fluted drill very well; Due to low cutting force and moment of torsion, point of a knife can bear higher impact simultaneously, realizes the working (machining) efficiency higher than traditional fluted drill.
Accompanying drawing explanation
Fig. 1: structural representation of the present invention;
A-A cross-sectional schematic in Fig. 2: Fig. 1;
Fig. 3: the close-up schematic view of the knife back;
Fig. 4: the end view of cutter head body.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical solution of the present invention is described further:
As shown in Figure 1, low moment of torsion apex point is strengthened self-correction and is bored, comprise cutter hub and shank 3, cutter hub and shank 3 are the coaxial clyinders centered by same central axis, cutter hub comprises cutting portion 1 and operate portions 2, cutting portion 1 shear action, and operate portions 2 plays guiding and chip removal effect, shank 3 is cylinder staight shank structure, for clamping.Cutter hub offers helical form chip area 4, the endface position mill of cutter head body has rear knife face, the intersection of rear knife face and chip area 4 forms main cutting edge, chip area is that main cutting edge is recessed in the trench structure of apex point axis, the outer rim of chip area arranges anti-circular arc and strengthens face, entity part outside chip area is the knife back 6, the knife back 6 is provided with guiding land 7 and revises land 8, as shown in Figure 3, there is between the face of cylinder at guiding land 7 and correction land 8 place the drop of 0.002mm ~ 0.007mm, guiding land 7 controls bit cutting direction in working angles, and when cutter generation tool le offset, revise the guiding that namely land 8 participates in cutting direction, play the effect revising direction instantaneously, drop Double-margin ensures size and the guiding in hole simultaneously.Chip area and knife back intersection is in radial directions formed holds sword 5.
As shown in Figure 2, the curved shape in cross section of chip area, its curve is made up of the arc section of four different curvature radius and straightway, and namely the first arc section 13, second arc section 14, three-arc section 15 are relevant to core height angle with the radius of curvature of straightway 16, the first arc section 13; The radius of curvature of the second arc section (gullet section) 14 is relatively little, and the radius of curvature of three-arc section (slot tail arc section) 15 is relatively large; Second arc section 14, three-arc section 15 make the knife back have suitable width with straightway 16 combination collocation, taken into account again appearance bits and the chip removal ability of groove, prevent breaking while ensureing rigidity.Chip area peripheral edge portion is anti-circular arc 12, and this circular arc is contrary with the circular arc direction of other circular arcs, and this circular arc has larger radius of curvature, and anti-circular arc 12 pairs of apex points and helical edges take up booster action, and the width of its radial direction is the diameter at edge part 10 of 0.03 times.What be connected with anti-circular arc 12 is the first arc section 13.Chip area anterior angle cutting-in line and two apex point lines form core height angle 11, and core high angular range is 3 ° ~ 8 °.
As shown in Figure 4, end sword 5 comprises knife face 18 after chisel edge 17 and circular arc, and the length of chisel edge 17 is the diameter at edge part of 0.008 ~ 0.01 times.After circular arc, knife face is knife face after the arc surface type connected with main cutting edge, and after arc surface type, after knife face, angular region is 8 ° ~ 12 °.Chisel edge 17 length is shorter, and object reduces axial force when cutting, and prevents cutter from shaking skew; After arc surface type, knife face 18 strengthens edge strength.
Adopt cutting edge recessed in the chip area trench structure of apex point axis; In the main cutting of this grooved, each point all has positive rake angle, can strengthen main cutting edge sharpness, effectively reduces load when cutting; Peripheral edge portion with time slot arranges circular arc and strengthens face, to prevent collapsing of the apex point that causes under high impact or helical land scarce.This flute profile solves the large problem of traditional fluted drill processing load, effectively reduces the moment of torsion of fluted drill.
End sword adopts knife face pattern after little chisel edge circular arc, and little chisel edge can ensure that the centering ability of drill bit reduces the axial force of drill bit simultaneously, and after circular arc, knife face strengthens edge strength.
The knife back arranges double helix drop Double-margin: the drop having 0.002mm ~ 0.007mm between guiding land and the face of cylinder revising land place, guiding land mainly controls bit cutting direction in working angles, and when cutter generation tool le offset, revise the guiding that namely land participates in cutting direction, play the effect revising direction instantaneously.
The range of work of this fluted drill is wider, especially under the hole machined occasion of piece-holder shakiness, its advantage is more obvious, its cutting edge is sharp, face is strengthened because flute profile outer rim exists circular arc, apex point and land not easily collapse scarce, double helix drop land plays a part to guide and revise to cutting direction again, compensate for the defect of traditional fluted drill very well.Due to low cutting force and moment of torsion, point of a knife can bear higher impact simultaneously, realizes the working (machining) efficiency higher than traditional fluted drill.
It is to be understood that: the above is only the preferred embodiment of the present invention; for those skilled in the art; under the premise without departing from the principles 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 (8)
1. low moment of torsion apex point strengthens self-correction brill, 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 endface position mill of cutter head body has rear knife face, the intersection of rear knife face and chip area forms main cutting edge, chip area is that main cutting edge is recessed in the trench structure of apex point axis, the outer rim of chip area arranges anti-circular arc and strengthens face, entity part outside chip area is the knife back, the knife back is provided with guiding land and revises land, between the face of cylinder at guiding land and correction land place, there is drop, described chip area connecting formed hold sword in radial directions crossing with the knife back.
2. low moment of torsion apex point according to claim 1 strengthens self-correction brill, it is characterized in that: the drop between described guiding land and the face of cylinder revising land place with 0.002mm ~ 0.007mm.
3. low moment of torsion apex point according to claim 1 strengthens self-correction brill, and it is characterized in that: described chip area anterior angle cutting-in line and two apex point lines form core height angle, core high angular range is 3 ° ~ 8 °.
4. low moment of torsion apex point according to claim 1 is strengthened self-correction and is bored, and it is characterized in that: the curved shape in cross section of described chip area, and its curve is made up of the arc section of four different curvature radius and straightway.
5. low moment of torsion apex point according to claim 1 strengthens self-correction brill, it is characterized in that: the width that described anti-circular arc strengthens anti-its radial direction of circular arc in face is the diameter at edge part of 0.03 times.
6. low moment of torsion apex point according to claim 1 is strengthened self-correction and is bored, and it is characterized in that: described end sword comprises knife face after chisel edge and circular arc.
7. low moment of torsion apex point according to claim 6 strengthens self-correction brill, it is characterized in that: the length of described chisel edge is the diameter at edge part of 0.008 ~ 0.01 times.
8. low moment of torsion apex point according to claim 6 strengthens self-correction brill, and it is characterized in that: after described circular arc, knife face is knife face after the arc surface type connected with main cutting edge, after arc surface type, after knife face, angular region is 8 ° ~ 12 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510555973.6A CN105033330A (en) | 2015-09-02 | 2015-09-02 | Low-torque self-correction drill with reinforced drill point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510555973.6A CN105033330A (en) | 2015-09-02 | 2015-09-02 | Low-torque self-correction drill with reinforced drill point |
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| Publication Number | Publication Date |
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| CN105033330A true CN105033330A (en) | 2015-11-11 |
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| CN201510555973.6A Pending CN105033330A (en) | 2015-09-02 | 2015-09-02 | Low-torque self-correction drill with reinforced drill point |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107486580A (en) * | 2017-09-19 | 2017-12-19 | 苏州思麦科精密切削工具有限公司 | The universal fluted drill of superfinishing |
| CN108161081A (en) * | 2018-01-19 | 2018-06-15 | 苏州阿诺精密切削技术有限公司 | For the drill bit to the metal works Drilling operation with cementation zone |
| CN108380942A (en) * | 2018-05-14 | 2018-08-10 | 东台升华工具有限公司 | A kind of hook-type aluminium sheet twist-drill special |
| CN114178590A (en) * | 2021-12-16 | 2022-03-15 | 铣立(上海)切削技术有限公司 | Improved high-pressure common rail special drill bit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000263307A (en) * | 1999-03-17 | 2000-09-26 | Toshiba Tungaloy Co Ltd | Double margin drill |
| JP2005305610A (en) * | 2004-04-23 | 2005-11-04 | Mitsubishi Materials Corp | Twist drill |
| CN102802853A (en) * | 2009-06-15 | 2012-11-28 | 三菱综合材料株式会社 | Drill with coolant holes |
| CN104755211A (en) * | 2012-10-30 | 2015-07-01 | 住友电工硬质合金株式会社 | Two-edge double margin drill |
| CN204867565U (en) * | 2015-09-02 | 2015-12-16 | 苏州阿诺精密切削技术股份有限公司 | Low moment of torsion drill tip is strengthened boring from revising |
-
2015
- 2015-09-02 CN CN201510555973.6A patent/CN105033330A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000263307A (en) * | 1999-03-17 | 2000-09-26 | Toshiba Tungaloy Co Ltd | Double margin drill |
| JP2005305610A (en) * | 2004-04-23 | 2005-11-04 | Mitsubishi Materials Corp | Twist drill |
| CN102802853A (en) * | 2009-06-15 | 2012-11-28 | 三菱综合材料株式会社 | Drill with coolant holes |
| CN104755211A (en) * | 2012-10-30 | 2015-07-01 | 住友电工硬质合金株式会社 | Two-edge double margin drill |
| CN204867565U (en) * | 2015-09-02 | 2015-12-16 | 苏州阿诺精密切削技术股份有限公司 | Low moment of torsion drill tip is strengthened boring from revising |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107486580A (en) * | 2017-09-19 | 2017-12-19 | 苏州思麦科精密切削工具有限公司 | The universal fluted drill of superfinishing |
| CN108161081A (en) * | 2018-01-19 | 2018-06-15 | 苏州阿诺精密切削技术有限公司 | For the drill bit to the metal works Drilling operation with cementation zone |
| CN108380942A (en) * | 2018-05-14 | 2018-08-10 | 东台升华工具有限公司 | A kind of hook-type aluminium sheet twist-drill special |
| CN114178590A (en) * | 2021-12-16 | 2022-03-15 | 铣立(上海)切削技术有限公司 | Improved high-pressure common rail special drill bit |
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| Date | Code | Title | Description |
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| 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. |
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| COR | Change of bibliographic data | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151111 |
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| WD01 | Invention patent application deemed withdrawn after publication |