CN108098025A - For the cornish bit of ultrashort ladder hole machined - Google Patents
For the cornish bit of ultrashort ladder hole machined Download PDFInfo
- Publication number
- CN108098025A CN108098025A CN201810101770.3A CN201810101770A CN108098025A CN 108098025 A CN108098025 A CN 108098025A CN 201810101770 A CN201810101770 A CN 201810101770A CN 108098025 A CN108098025 A CN 108098025A
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- CN
- China
- Prior art keywords
- sword
- tooth
- cylinder
- chip removal
- column part
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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.)
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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
- B23B51/009—Stepped drills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/0018—Drills for enlarging a hole
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The present invention provides the cornish bits for ultrashort ladder hole machined, can solve the problems, such as that the reaming-forming tool difficulty of processing for the ultrashort multi-ladder forming hole for being less than 3mm for step length is big, precision is low and easily causes measurement error.Its cutter hub is one and the ladder circle cylinder of handle of a knife coaxial line；Ladder circle cylinder includes the first cylinder and the second cylinder that connect with one heart, the rear end of second cylinder and the concentric integrally connected of handle of a knife, four chip removal major troughs and four chip removal pair slots are offered on the outer circumferential surface of first cylinder and four chip removal major troughs and four chip removal pair slots it is circumferentially spaced arrange and extand rearward on the second cylinder simultaneously, so as to form eight sword teeth on the outer circumferential surface of ladder circle cylinder, eight sword teeth include four the first sword teeth and four the second sword teeth, sword tooth wherein positioned at the clockwise direction one side of chip removal major trough is the first sword tooth, the sword tooth of counter clockwise direction one side is the second sword tooth, first sword tooth and the second sword tooth respectively include the first column part and the second column part.
Description
Technical field
The present invention relates to the cutter field of metal cutting process, particularly for the cornish bit of ultrashort ladder hole machined.
Background technology
With widely using for numerically-controlled machine tool and machining center, many processing steps of machinery field can concentrate on same
Equipment carries out, and machining efficiency greatly improves；And the continuous application of compound tool also makes making for numerically-controlled machine tool and machining center
It is greatly improved with efficiency, further speeded up productive temp and effectively reduces cost per unit；Particularly complicated multi-ladder briquetting roller
Requirement higher of the wide processing to productive temp.
It is existing for it is complicated, size is more for association, shaping hole machined with high accuracy, be typically first to improve efficiency
One ladder datum hole is processed using step drill, then step expanding drill is used to carry out reaming processing to ladder datum hole to meet profile
One-pass molding.But the reaming for being less than the ultrashort multi-ladder forming holes of 3mm for step length is processed, it is blind especially for ladder
The reaming processing in hole, since its step length is no more than 3mm, therefore the difficulty of processing of counterboring with step core drill knife is big；Simultaneously because ladder expands
At the ladder transition of hole knife there are back chipping cause adjustable surplus it is smaller, easily cause debugging scrap；And due to part ladder
The dimensional tolerance of Hole chamfering is tighter, when manufacture be difficult to ensure that at machining accuracy, especially stepped chamfers can there are emery wheel fillet R,
See Fig. 6 and Fig. 7, thus its to measure difficulty big, also easily with causing measurement error, therefore can not also meet the essence of parts profile size
Degree requires, and II is traditional counterboring with step core drill cutter in Fig. 6；In addition traditional counterboring with step core drill knife carry out reconditioning after use must be by
It is ground again after the removal of one ladder, therefore cutter material waste is serious, the cost of charp tool is high.In consideration of it, for this ultrashort multistage
The reaming processing of terraced forming hole in order to ensure machining accuracy, avoid measurement error, can only often use first independent processing shoulder hole
Stepped chamfers are individually processed with rose reamer again, but it is thus high to the required precision of lathe, and production section can be greatly prolonged
It claps, reduce processing efficiency.
The content of the invention
In view of the above-mentioned problems, the present invention provides the cornish bits for ultrashort ladder hole machined, can solve to be directed to ladder
Length less than 3mm ultrashort multi-ladder forming hole reaming-forming tool difficulty of processing it is big, precision is low and easily cause debugging measure
The problem of error.
Its technical solution is that, for the cornish bit of ultrashort ladder hole machined, including cutter hub and handle of a knife, the handle of a knife is one
Cylinder, the cutter hub are one and the ladder circle cylinder of the handle of a knife coaxial line, it is characterised in that：The ladder circle cylinder includes
The first cylinder of a diameter of D1 connected with one heart and the second cylinder of a diameter of D2 and D1 ＜ D2, the rear end of second cylinder with
The concentric integrally connected of handle of a knife, first cylinder are used for the reaming-forming of front aperture, and second cylinder is used for rear hole
Reaming-forming and stepped chamfers shaping, offer four chip removal major troughs and four chip removal pairs on the outer circumferential surface of first cylinder
Slot and the circumferentially spaced arrangement of four chip removal major troughs and four chip removal pair slots simultaneously extand rearward to second circle simultaneously
On column, so as to form eight sword teeth on the outer circumferential surface of the ladder circle cylinder, eight sword teeth include four the first sword teeth
With four the second sword teeth, wherein positioned at the clockwise direction one side of the chip removal major trough sword tooth for the first sword tooth, the inverse time
The sword tooth of pin direction one side be the second sword tooth, four first sword teeth, four the second sword teeth with shaft centre line two-by-two
Center symmetric setting, the first sword tooth and the second sword tooth respectively include the first column part and the second column part.
Further, the first column part of four second sword teeth and positioned at the chip removal pair slot one side the back of tooth on
End chamfer is equipped with equipped with the front end for being oriented to land and the guiding land, the first column part of four the first sword teeth
The tooth of high the first column part for being respectively less than four the second sword teeth of tooth is high.
Further, the guiding land is extanded rearward on the second column part of the second sword tooth.
Further, the back of tooth of the second column part of the second sword tooth is from rear end forward end radial direction skiving camber face
And the tooth of the second column part of the second sword tooth is high contour with the tooth height of the first column part and link into an integrated entity.
Further, in four the first sword teeth, the second column part and the first cylinder of one pair of which the first sword tooth
Part is connected by the transition of ladder angle, and two transition angles are located at the chip removal pair slot one side equipped with the first land so as to shape
Into two chamfer cutting swords, the second column part of another pair the first sword tooth is located at the chip removal pair slot one side and is respectively equipped with
Two lands are so as to forming two reaming cutting edges.
Further, core thickness φ a=0.45D1~0.65D1 of the chip removal major trough.
Further, core thickness φ b=0.75D1~0.85D1 of the chip removal pair slot.
The beneficial effects of the present invention are：It can meet ultrashort, complicated, multi-ladder reaming processing, especially for
Ultrashort counterboring with step core drill is drilled in ladder length less than the scrappage and manufacture difficulty that in the case of 3mm, can reduce manufacture；In addition, it is logical
It crosses and is spaced apart on ladder circle cylinder equipped with four chip removal major troughs and four chip removal pair slots so as in the outer circumferential surface of ladder circle cylinder
Upper interval forms centrosymmetric four the first sword teeth and four the second sword teeth, and the first sword tooth, the second sword tooth include the
One column part and the second column part, so as to cutter single feeding can complete stepped hole reaming-forming and stepped chamfers into
Type greatly shortens productive temp, improves processing efficiency；In addition, using present invention processing, compact dimensions are determined by cutter, therefore energy
Enough ensure that a procedure ensures dimensional profile, it is small to the dependence of machine tool accuracy.
Description of the drawings
Fig. 1 is structure diagram of the present invention for the cornish bit of ultrashort ladder hole machined；
Fig. 2 is the right visual direction enlarged structure schematic diagram of Fig. 1；
Fig. 3 is dimensional structure diagram of the present invention for the cornish bit of ultrashort ladder hole machined；
Fig. 4 is the schematic diagram for carrying out chamfering work piece cutting for the cornish bit of ultrashort ladder hole machined using the present invention；
Fig. 5 be in Fig. 4 A-A to enlarged structure schematic diagram；
Fig. 6 is the schematic diagram for carrying out chamfering reaming cutting to workpiece using conventional step expanding drill；
Fig. 7 be Fig. 6 in B at emery wheel R angles enlarged structure schematic diagram.
Reference numeral：10- cutter hubs, the first cylinders of 11-, the second cylinders of 12-, 13- chip removal major troughs, 14- chip removal pair slots, 15-
First sword tooth, the first column part of 151- the first sword teeth, the second column part of 152- the first sword teeth, 15a- the first sword teeth,
Second column part of 152a- the first sword teeth, 153- ladders angle, 15b- the first sword teeth, the second cylindrical portion of 152b- the first sword teeth
Point, 16- the second sword teeth, 17- is oriented to land, 171- end chamfers, the first lands of 18-, the second lands of 19-, 20- handle of a knifes, 30- works
Part, 31- chamferings, 32- forming surfaces.
Specific embodiment
See Fig. 1 and Fig. 2, the present invention is used for the cornish bit I of ultrashort ladder hole machined, including cutter hub 10 and handle of a knife 20, knife
Handle 20 is a cylinder, and cutter hub 10 is one and the ladder circle cylinder of handle of a knife coaxial line；Ladder circle cylinder includes connecting with one heart straight
Footpath be D1 the first cylinder 11 and a diameter of D2 the second cylinder 12 and D1 ＜ D2, rear end and the handle of a knife 20 concentric one of the second cylinder
Body connects, and the first cylinder 11 is used for the reaming-forming of front aperture, and the second cylinder 12 falls for the reaming-forming and ladder of rear hole
Angle is molded, and four chip removal major troughs 13 and four chip removal pair slots 14 and four chip removal major troughs are offered on the outer circumferential surface of the first cylinder 11
13 and four chip removal pair 14 circumferentially spaced arrangements of slot whiles extand rearward on the second cylinder 12, so as in stepped cylindrical
Eight sword teeth, core thickness φ a=0.45D1~0.65D1 of chip removal major trough 13, the core thickness of chip removal pair slot 14 are formed on the outer circumferential surface of body
φ b=0.75D1~0.85D1；Eight sword teeth include four the first sword teeth 15 and four the second sword teeth 16, each of which chip removal
The clockwise direction end of major trough 13 forms a first sword tooth 15, counter clockwise direction end forms a second sword tooth 16, thus
Four spaced the first sword teeth 15 and four the second sword teeth 16, four the first sword teeth are formed on the outer circumferential surface of ladder circle cylinder
15th, with shaft centre line, center symmetric setting, the first sword tooth 15 include 151 He of the first column part to four the second sword teeth 16 two-by-two
Second column part 152, the second sword tooth 16 include the first column part 161 and the second column part 162.
See Fig. 3, the first column part 161 of four the second sword teeth 16 and back of tooth positioned at 14 one side of chip removal pair slot is equipped with
The front end for being oriented to land 17 and guiding land 17 is equipped with end chamfer 171, the first column part 151 of four the first sword teeth 15
The tooth of high the first column part 161 for being respectively less than four the second sword teeth 16 of tooth is high, so as to the first column part of the first sword tooth 15
151 and the reaming-forming cutting of front aperture is not involved in, and only the first column part 161 of four the second sword teeth 16 participates in front end
The reaming-forming cutting in hole, and be oriented to land 17 and played when end chamfer 171 carries out reaming cutting as cutting edge effectively
Guide support effect；And be oriented to land 17 and extand rearward on the second column part 162 of the second sword tooth 16, thus it is oriented to sword
It can increase the reconditioning number of cornish bit with 17 extension, improve cost performance；The tooth of second column part 162 of the second sword tooth 16
Carry on the back the second column part 162 and the first circle of the arcwall face from rear end forward end radial direction skiving into a diameter of D3 and the second sword tooth 16
The tooth of post part 161 is high contour and links into an integrated entity, i.e. D3 is equal to the diameter D1 of the first cylinder 11, so as to be repaiied for cornish bit
Extending back for land 17 is oriented to after mill, sufficient space is provided, simultaneously because the tooth of the second column part 162 of the second sword tooth 16
The back of the body is from rear end to leading portion radial direction skiving so that the tooth height of the second column part 162 of the second sword tooth 16 is less than the first sword tooth 15
The tooth of second column part 152 is high, i.e., the second column part 162 of four the second sword teeth 16 is not involved in the reaming-forming of rear hole
Processing.
In four the first sword teeth 15, the second column part 152a and the first column part of one pair of which the first sword tooth 15a
151 are connected by 153 transition of ladder angle, and two transition angles 153 be located at 14 one side of chip removal pair slot equipped with the first land 18 thus
Two chamfer cutting swords are formed, Fig. 3 is seen, for forming the chamfering 31 at the ladder transition of 30 stepped hole of workpiece, sees Fig. 4 and Fig. 5；
The second column part 152b of another pair the first sword tooth 15b be located at 14 one side of chip removal pair slot be respectively equipped with the second land 19 so as to
Two reaming cutting edges are formed, for forming the reaming-forming in workpiece step hole molding face 32；In Fig. 4, I is reaming of the invention
Bore signal.Since chamfer cutting sword is separately positioned on from reaming cutting edge on different sword tooth 15a, 15b, processing can guarantee
The integrality of workpiece stepped hole profile afterwards.See Fig. 1, the θ in Fig. 1 is the angle signal between two ladder angles 153.
The front end for being oriented to land 17 is equipped with end chamfer 171, on the second sword tooth 16, therefore it is with the first land 18, the
Two lands 19 ensure that the integrality of chamfering 171 in structure onrelevant so that the reconditioning of reamer is without needing to remove the first rank again
Ladder can carry out direct reconditioning；And in the case where ensureing diameter, reconditioning number can be increased 5-8 times, so as to effectively improve knife
Have cost performance, reduce the cost of charp tool.
The specific implementation of the present invention is described in detail above, but content is only the preferable embodiment party of the invention
Case, it is impossible to be construed as limiting the practical range of the invention.All impartial changes made according to the invention application range
Change and improvement etc. should all be belonged to still within the patent covering scope of the present invention.
Claims (7)
1. for the cornish bit of ultrashort ladder hole machined, including cutter hub (10) and handle of a knife (20), the handle of a knife (20) is a circle
Cylinder, the cutter hub (10) are one and the ladder circle cylinder of the handle of a knife (20) coaxial line, it is characterised in that：The stepped cylindrical
Body includes the first cylinder (11) of a diameter of D1 for connecting with one heart and the second cylinder (12) of a diameter of D2 and D1 ＜ D2, and described the
The rear end of two cylinders and the handle of a knife (20) concentric integrally connected, first cylinder (11) are used for the reaming-forming of front aperture,
Second cylinder (12) is molded for the reaming-forming and stepped chamfers of rear hole, on the outer circumferential surface of first cylinder (11)
Offer four chip removal major troughs (13) and four chip removal pair slots (14) and four chip removal major troughs (13) and four chip removal pair slots
(14) circumferentially spaced arrangement is simultaneously extanded rearward on second cylinder (12) simultaneously, so as in the ladder circle cylinder
Eight sword teeth are formed on outer circumferential surface, eight sword teeth include four the first sword teeth (15) and four the second sword teeth (16), wherein
Sword tooth positioned at the clockwise direction one side of the chip removal major trough (13) is the first sword tooth (15), counter clockwise direction one side
Sword tooth be the second sword tooth (16), four first sword teeth (15), four the second sword teeth (16) with shaft centre line two-by-two
Center symmetric setting, the first sword tooth (15) and the second sword tooth (16) include the first column part (151,161) and the respectively
Two column parts (152,162).
2. the cornish bit of ultrashort ladder hole machined is used for according to claim 1, it is characterised in that：Four second sword teeth
(16) the first column part (161) and the back of tooth positioned at chip removal pair slot (14) one side, which are equipped with, is oriented to land (17) and institute
The front end for being oriented to land (17) is stated equipped with end chamfer (171), the first column part (151) of four the first sword teeth (15)
High the first column part (161) for being respectively less than four the second sword teeth (16) of tooth tooth it is high.
3. the cornish bit of ultrashort ladder hole machined is used for according to claim 2, it is characterised in that：The guiding land (17)
It extands rearward on the second column part (162) of the second sword tooth (16).
4. the cornish bit of ultrashort ladder hole machined is used for according to claim 3, it is characterised in that：The second sword tooth (16)
The second column part (162) the back of tooth from the second of rear end forward end radial direction skiving camber face and the second sword tooth (16)
The tooth of column part (162) is high high contour with the tooth of the first column part (161) and links into an integrated entity.
5. the cornish bit of ultrashort ladder hole machined is used for according to claim 4, it is characterised in that：Four the first sword teeth
(15) in, the second column part (152a) and the first column part (151) of one pair of which the first sword tooth (15a) pass through ladder angle
(153) transition connect, and two transition angles (153) be located at chip removal pair slot (14) one side be equipped with the first land (18) from
And two chamfer cutting swords are formed, the second column part (152b) of another pair the first sword tooth (15b) is located at the chip removal pair
Slot (14) one side is respectively equipped with the second land (19) so as to form two reaming cutting edges.
6. the cornish bit of ultrashort ladder hole machined is used for according to claim 5, it is characterised in that：The chip removal major trough (13)
Core thickness φ a=0.45D1~0.65D1.
7. the cornish bit of ultrashort ladder hole machined is used for according to claim 6, it is characterised in that：The chip removal pair slot (14)
Core thickness φ b=0.75D1~0.85D1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810101770.3A CN108098025B (en) | 2018-02-01 | 2018-02-01 | Reaming cutter for processing ultra-short stepped hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810101770.3A CN108098025B (en) | 2018-02-01 | 2018-02-01 | Reaming cutter for processing ultra-short stepped hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108098025A true CN108098025A (en) | 2018-06-01 |
| CN108098025B CN108098025B (en) | 2023-10-03 |
Family
ID=62220948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810101770.3A Active CN108098025B (en) | 2018-02-01 | 2018-02-01 | Reaming cutter for processing ultra-short stepped hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108098025B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2850780Y (en) * | 2005-12-13 | 2006-12-27 | 长安汽车（集团）有限责任公司 | Stepwise expanding drill |
| CN102380644A (en) * | 2010-08-30 | 2012-03-21 | 濮春辉 | Twist drill |
| CN104607699A (en) * | 2015-02-02 | 2015-05-13 | 苏州阿诺精密切削技术股份有限公司 | Multi-step forming reamer |
| CN206009944U (en) * | 2016-08-27 | 2017-03-15 | 杭州比诺精密工具有限公司 | Cold-smoothing bottom step expanding drill in overall HM |
| CN107350531A (en) * | 2017-06-30 | 2017-11-17 | 株洲钻石切削刀具股份有限公司 | A kind of step cutter |
| CN206811188U (en) * | 2017-06-23 | 2017-12-29 | 苏州辉荣合升机械制造有限公司 | A kind of gang tool for processing shoulder hole |
| CN207873204U (en) * | 2018-02-01 | 2018-09-18 | 苏州阿诺精密切削技术有限公司 | A kind of cornish bit for ultrashort ladder hole machined |
-
2018
- 2018-02-01 CN CN201810101770.3A patent/CN108098025B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2850780Y (en) * | 2005-12-13 | 2006-12-27 | 长安汽车（集团）有限责任公司 | Stepwise expanding drill |
| CN102380644A (en) * | 2010-08-30 | 2012-03-21 | 濮春辉 | Twist drill |
| CN104607699A (en) * | 2015-02-02 | 2015-05-13 | 苏州阿诺精密切削技术股份有限公司 | Multi-step forming reamer |
| CN206009944U (en) * | 2016-08-27 | 2017-03-15 | 杭州比诺精密工具有限公司 | Cold-smoothing bottom step expanding drill in overall HM |
| CN206811188U (en) * | 2017-06-23 | 2017-12-29 | 苏州辉荣合升机械制造有限公司 | A kind of gang tool for processing shoulder hole |
| CN107350531A (en) * | 2017-06-30 | 2017-11-17 | 株洲钻石切削刀具股份有限公司 | A kind of step cutter |
| CN207873204U (en) * | 2018-02-01 | 2018-09-18 | 苏州阿诺精密切削技术有限公司 | A kind of cornish bit for ultrashort ladder hole machined |
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| Publication number | Publication date |
|---|---|
| CN108098025B (en) | 2023-10-03 |
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