CN201807770U - Inner-chip removal deep-hole drill - Google Patents
Inner-chip removal deep-hole drill Download PDFInfo
- Publication number
- CN201807770U CN201807770U CN2010202753417U CN201020275341U CN201807770U CN 201807770 U CN201807770 U CN 201807770U CN 2010202753417 U CN2010202753417 U CN 2010202753417U CN 201020275341 U CN201020275341 U CN 201020275341U CN 201807770 U CN201807770 U CN 201807770U
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- cutting edge
- cutter head
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- knife bar
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Abstract
An inner-chip removal deep-hole drill solves the problems that turbine cylinder connecting bolt holes are processed by an outer-chip removal drill, the bolt holes are drilled at two ends of a turbine cylinder connecting bolt, and the drilled bolt holes have machined traces so that processing precision is poor. The included angle between two positioning block grooves is 95 degrees; a positioning block is inlaid into each positioning block groove; a tool bit is inlaid into a tool bit groove; main chip cutting edges of the tool bit are stepped edges; the stepped edges respectively include a first-step main chip cutting edge, a second-step main chip cutting edge and a third-step main chip cutting edge; the included angle between the first-step main chip cutting edge and the end face of a tool nose is 12 degrees; the included angle between the second-step main chip cutting edge and the end face of the tool nose is 15 degrees; the included angle between the third-step main chip cutting edge and the end face of the tool nose is 20 degrees; a chip breaker groove is arranged on a front tool face of a toolbar; an edge point relief angle is reserved along the axial direction of the tool bit; an inner conical hole connected with the main chip cutting edges is arranged on the end face of the toolbar; and a chip removal hole communicated with the inner conical hole is arranged at the position of an axis of the rear of the toolbar. The inner-chip removal deep-hole drill is used for processing turbine cylinder connecting bolt holes.
Description
Technical field
The utility model relates to a kind of deep hole drill.
Background technology
Deep hole drill is the cutter that processing vapor turbine connecting bolt endoporus must be used, because cylinder connecting bolt hole is very dark, processing cylinder connecting bolt hole is to adopt outer chip removal drill bit at present, two auger shell keyhole, bolt hole behind the brill has the vestige that connects cutter, cause machining accuracy poor, have the shortcoming that chip removal is not smooth, cooling is bad, cutter life is short simultaneously.
Summary of the invention
The purpose of this utility model is to adopt outer chip removal drill bit for solving the processing of steam turbine connecting bolt hole, two auger shell keyhole, bolt hole behind the brill has the vestige that connects cutter, causes the problem that machining accuracy is poor, chip removal is smooth, cutter life is lacked, and a kind of bta deep hole drilling head is provided.
The utility model is by knife bar, cutter head and two locating pieces are formed, the front end outer surface of knife bar is provided with two locating piece grooves, angle between the cross section of two locating piece grooves is 90 °～100 °, inlay a locating piece in each locating piece groove, the front end face of knife bar is provided with the cutter head groove, and limit of cutter head groove and central lines, cutter head is embedded in the cutter head groove, the main cutting edge of cutter head is the ladder sword, this ladder sword is respectively first order master cutting edge, second level master's cutting edge and third level master cutting edge, normal throw between first order master's cutting edge and the second level master's cutting edge is 0.7～0.9mm, normal throw between second level master's cutting edge and the third level master cutting edge is 0.7～0.9mm, the angle of first order master's cutting edge and point of a knife end face is 12 °, the angle of second level master's cutting edge and point of a knife end face is 15 °, the angle of third level master cutting edge and point of a knife is 20 °, the rake face of knife bar 1 is provided with chip-breaker, cutter head be axially arranged with the blade tip relief angle, the end face of knife bar is provided with the internal taper hole that links to each other with main cutting edge, and the place, axle center, rear portion of knife bar is provided with the chip-removal hole that communicates with internal taper hole.
The utility model has the advantages that: one, the utility model is designed to interior chip-removal hole with knife bar 1, main cutting edge with cutter head 2 is designed to the ladder sword simultaneously, when processing steam turbine connecting bolt hole, make smear metal discharge by internal taper hole 1-1 and chip-removal hole 1-2, chip removal is smooth and easy, bolt hole processes at one time, and has improved the machining accuracy of bolt hole and the service life of cutter.Two, the utility model when cutting good heat dissipation, vibration little, be difficult for forging a knife, reduced the Tool in Cutting resistance, improved Tool in Cutting efficient, reduce tool expense.
Description of drawings
Fig. 1 is an overall structure front view of the present utility model, and Fig. 2 is the left view of Fig. 1, and Fig. 3 is the normal profile view of the back cutting edge 2-4 on the cutter head 2, and Fig. 4 is the A-A cutaway view of Fig. 1, and Fig. 5 is the B-B cutaway view of Fig. 1.
The specific embodiment
The specific embodiment one: present embodiment is described in conjunction with Fig. 1 ~ Fig. 5, present embodiment is by knife bar 1, cutter head 2 and two locating pieces 3 are formed, the front end outer surface of knife bar 1 is provided with two locating piece groove 1-4, angle α between the cross section of two locating piece groove 1-4 is 90 °～100 °, inlay a locating piece 3 among each locating piece groove 1-4, the front end face of knife bar 1 is provided with cutter head groove 1-3, and the limit of cutter head groove 1-3 and central lines, cutter head 2 is the single cutting-edge structure, cutter head 2 is embedded among the cutter head groove 1-3, the main cutting edge of cutter head 2 is the ladder sword, this ladder sword is respectively first order master cutting edge 2-1, second level master's cutting edge 2-2 and third level master cutting edge 2-3, normal throw t between first order master's cutting edge 2-1 and the second level master's cutting edge 2-2 is 0.7～0.9mm, normal throw t between second level master's cutting edge 2-2 and the third level master cutting edge 2-3 is 0.7～0.9mm, the angle β 1 of first order master's cutting edge 2-1 and point of a knife end face is 12 °, the angle β 2 of second level master's cutting edge 2-2 and point of a knife end face is 15 °, the angle β 3 of third level master cutting edge 2-3 and point of a knife is 20 °, the rake face of knife bar 1 is provided with chip-breaker 2-6, the back cutting edge 2-4 of cutter head 2 and the angle δ of point of a knife end face are 18 °～20 °, the relief angle θ of cutter head 2 is 23 °～27 °, the cutting cone relief angle γ of cutter head 2 is 7 °～8 °, the length s of the end cutting edge 2-5 of cutter head 2 is 0.8mm～1.2mm, the cutting edge inclination λ of front cutting edge is-5 °～-15 °, cutter head 2 be axially arranged with blade tip relief angle 2-7, the end face of knife bar 1 is provided with the internal taper hole 1-1 that links to each other with main cutting edge, and the place, axle center, rear portion of knife bar 1 is provided with the chip-removal hole 1-2 that communicates with internal taper hole 1-1.The material of cutter head 2 is selected carbide alloy for use, and the trade mark is YG813, and YG813 has high wearability, thereby improves the service life of cutter head 2.The material of each locating piece 3 is selected carbide alloy for use.The ladder sword is three narrow smear metals with wide smear metal disjunction, and chip-breaker 2-6 is short block smear metal with the smear metal disjunction, and good chip breaking structure makes smear metal from the smooth and easy discharge of endoporus.
The specific embodiment two: in conjunction with Fig. 1 present embodiment is described, the aperture of the chip-removal hole 1-2 of present embodiment is Φ 12～Φ 16mm.Chip-removal hole 1-2 introduces the smooth and easy discharge of smear metal with internal taper hole 1-1.Other composition and connection are identical with the specific embodiment one.
The specific embodiment three: in conjunction with Fig. 1 present embodiment is described, the back end outer surface of the knife bar 1 of present embodiment is provided with the square thread of M22 * 8.Square thread has good connection precision and intensity.Other composition and connection are identical with the specific embodiment one.
Claims (8)
1. bta deep hole drilling head, it is characterized in that: described drill bit is by knife bar (1), cutter head (2) and two locating pieces (3) are formed, the front end outer surface of knife bar (1) is provided with two locating piece grooves (1-4), angle (α) between the cross section of two locating piece grooves (1-4) is 90 °～100 °, inlay a locating piece (3) in each locating piece groove (1-4), the front end face of knife bar (1) is provided with cutter head groove (1-3), and limit of cutter head groove (1-3) and central lines, cutter head (2) is embedded in the cutter head groove (1-3), the main cutting edge of cutter head (2) is the ladder sword, this ladder sword is respectively first order master cutting edge (2-1), second level master's cutting edge (2-2) and third level master cutting edge (2-3), normal throw (t) between first order master's cutting edge (2-1) and the second level master's cutting edge (2-2) is 0.7～0.9mm, normal throw (t) between second level master's cutting edge (2-2) and the third level master cutting edge (2-3) is 0.7～0.9mm, first order master's cutting edge (2-1) is 12 ° with the angle (β 1) of point of a knife end face, second level master's cutting edge (2-2) is 15 ° with the angle (β 2) of point of a knife end face, third level master cutting edge (2-3) is 20 ° with the angle (β 3) of point of a knife, the rake face of knife bar (1) is provided with chip-breaker (2-6), cutter head (2) be axially arranged with blade tip relief angle (2-7), the end face of knife bar (1) is provided with the internal taper hole (1-1) that links to each other with main cutting edge, and the place, axle center, rear portion of knife bar (1) is provided with the chip-removal hole (1-2) that communicates with internal taper hole (1-1).
2. according to the described a kind of bta deep hole drilling head of claim 1, it is characterized in that: the back cutting edge (2-4) of described cutter head (2) is 18 °～20 ° with the angle (δ) of point of a knife end face.
3. according to claim 1 or 2 described a kind of bta deep hole drilling heads, it is characterized in that: the relief angle (θ) of described cutter head (2) is 23 °～27 °.
4. according to the described a kind of bta deep hole drilling head of claim 3, it is characterized in that: the cutting cone relief angle (γ) of described cutter head (2) is 7 °～8 °.
5. according to the described a kind of bta deep hole drilling head of claim 4, it is characterized in that: the length (s) of the end cutting edge (2-5) of described cutter head (2) is 0.8mm～1.2mm.
6. according to the described a kind of bta deep hole drilling head of claim 5, it is characterized in that: the cutting edge inclination of described front cutting edge (λ) is-5 °～-15 °.
7. according to the described a kind of bta deep hole drilling head of claim 1, it is characterized in that: the aperture of described chip-removal hole (1-2) is Φ 12～Φ 16mm.
8. according to claim 1 or 2 described a kind of bta deep hole drilling heads, it is characterized in that: the back end outer surface of described knife bar (1) is provided with the square thread of M22 * 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202753417U CN201807770U (en) | 2010-07-29 | 2010-07-29 | Inner-chip removal deep-hole drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202753417U CN201807770U (en) | 2010-07-29 | 2010-07-29 | Inner-chip removal deep-hole drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201807770U true CN201807770U (en) | 2011-04-27 |
Family
ID=43890719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202753417U Expired - Lifetime CN201807770U (en) | 2010-07-29 | 2010-07-29 | Inner-chip removal deep-hole drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201807770U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357665A (en) * | 2011-10-08 | 2012-02-22 | 深圳市金洲精工科技股份有限公司 | Microbit and processing method thereof |
| CN103691999A (en) * | 2013-12-26 | 2014-04-02 | 无锡雨田精密工具有限公司 | Polishing tool |
| CN104070207A (en) * | 2014-06-20 | 2014-10-01 | 乐山斯堪纳机械制造有限公司 | Drill bit and method for processing deep hole of shaft type product |
| CN104148706A (en) * | 2014-06-05 | 2014-11-19 | 哈尔滨汽轮机厂有限责任公司 | Turbine high and intermediate pressure cylinder horizontal split bolt deep hole drilling bit and use method thereof |
| CN106736657A (en) * | 2017-02-28 | 2017-05-31 | 中兴能源装备有限公司 | Interior chip removal vibration-resistant tool bar |
| CN113399713A (en) * | 2021-05-19 | 2021-09-17 | 赣州澳克泰工具技术有限公司 | Blade for hole machining |
-
2010
- 2010-07-29 CN CN2010202753417U patent/CN201807770U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357665A (en) * | 2011-10-08 | 2012-02-22 | 深圳市金洲精工科技股份有限公司 | Microbit and processing method thereof |
| CN103691999A (en) * | 2013-12-26 | 2014-04-02 | 无锡雨田精密工具有限公司 | Polishing tool |
| CN104148706A (en) * | 2014-06-05 | 2014-11-19 | 哈尔滨汽轮机厂有限责任公司 | Turbine high and intermediate pressure cylinder horizontal split bolt deep hole drilling bit and use method thereof |
| CN104070207A (en) * | 2014-06-20 | 2014-10-01 | 乐山斯堪纳机械制造有限公司 | Drill bit and method for processing deep hole of shaft type product |
| CN104070207B (en) * | 2014-06-20 | 2016-05-11 | 乐山斯堪纳机械制造有限公司 | A kind of axis products deep hole processing drill bit and method |
| CN106736657A (en) * | 2017-02-28 | 2017-05-31 | 中兴能源装备有限公司 | Interior chip removal vibration-resistant tool bar |
| CN106736657B (en) * | 2017-02-28 | 2019-04-16 | 中兴能源装备有限公司 | Interior chip removal vibration-resistant tool bar |
| CN113399713A (en) * | 2021-05-19 | 2021-09-17 | 赣州澳克泰工具技术有限公司 | Blade for hole machining |
| CN113399713B (en) * | 2021-05-19 | 2023-05-12 | 赣州澳克泰工具技术有限公司 | Blade for hole machining |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110427 |