CN1410223A - Scraping and grinding method of inclined relieving milling cutter - Google Patents
Scraping and grinding method of inclined relieving milling cutter Download PDFInfo
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- CN1410223A CN1410223A CN02133774.8A CN02133774A CN1410223A CN 1410223 A CN1410223 A CN 1410223A CN 02133774 A CN02133774 A CN 02133774A CN 1410223 A CN1410223 A CN 1410223A
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- milling cutter
- bistrique
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Abstract
A method for relief grinding of oblique relief milling cutter includes such steps as course and fine turning external circumferences of milling cutter, milling slot and front cutting surface, coarse relieving of tooth back and cutting edge, quenching handle, blasting sand, blueing of surface, grinding central hole, fine grinding of handle circumferences, grinding front cutting surface, clamping it on gear milling lathe, and oblique relief grinding with abrasive disk. Its advantages are easy operation, easy control of precision, and high productivity.
Description
Technical field
The present invention relates to a kind of tool fabrication method, relate to a kind of manufacture method of special-purpose metal cutting tool specifically.
Background technology
Oblique backed-off milling cutter is a kind of cutter with profile of tooth root groove part that is used to process, and the machining accuracy of part profile of tooth depends primarily on the precision that is used to process the cutter that profile of tooth uses.300MW that the applicant produces and 600MW steam turbine turbines vane blade root slot adopt bacterial type blade root milling cutter milling moulding.This bacterial type blade root milling cutter because the relief grinding method of oblique teeth moulding is difficult to grasp, is puzzlement cutter manufacturing one a big technical barrier always.At present, the relief grinding great majority of oblique backed-off milling cutter are to continue to use traditional processing method: promptly adopt the molded lines of manual knee trimming wheel, and then with the profile of tooth of emery wheel relief grinding milling cutter.Also have and adopt computer to design the emery wheel molded lines that the relief grinding profile of tooth is used automatically, and then with formed grinding wheel relief grinding profile of tooth.Traditional oblique relief grinding method requires operator's technical merit grade height, experienced, and production efficiency is low, is unsuitable for producing in batches, and profile accuracy is wayward.And adopt computer to design the emery wheel molded lines automatically according to processed milling cutter tooth form, and also needing prior trimming wheel molded lines, this method exists equipment and the big shortcoming of human input.More than the common ground of two kinds of methods be, before the relief grinding, molded lines that must trimming wheel.
Summary of the invention
The objective of the invention is to solve the technical barrier of above-mentioned prior art, design a kind of manufacture method of adaptable, the oblique relief grinding milling cutter that can on common gear milling lathe, produce in batches.
In order to realize the foregoing invention purpose, the present invention finishes by the following technical programs:
The technical process of oblique backed-off milling cutter comprises through thick each cylindrical of finish turning milling cutter, mills groove, rake face, processings of turning blue of the thick teeth back of the body, blade, shank quenching, sandblast, surface, the grinding centre bore, correct grinding handle of a knife cylindrical, grind accurate rake face after, clamping method routinely, employing standard emery wheel, promptly before relief grinding, the milling cutter clamping on gear milling lathe, is adjusted the bistrique free degree, the trimming wheel conical surface again, relief grinding goes out the profile of tooth of milling cutter.Its work step is as follows:
(1) adjust the bistrique frame the consistent also grinding spindle center line with gear milling lathe spindle centerline height of grinding spindle center line be the level of state,
(2) when the relief grinding toothed surface, the interference angle of adjustment bistrique in horizontal plane reaches the anglec of rotation on the vertical plane,
(3) interference angle of bistrique in horizontal plane should tiltedly shovel the angle greater than toothed surface, and less than 30 °, the anglec of rotation in vertical guide is 0 °--and 10 °,
(4) adjust the bistrique free degree after, adding only needs the trimming wheel conical surface man-hour, can relief grinding go out milling cutter tooth form.
The angle of described bistrique institute's deflection in horizontal plane equals toothed surface tiltedly shovels the angle and adds 2 °, and the angle of institute's deflection is directly proportional with described oblique backed-off milling cutter diameter in vertical guide.
The dressing tool of the described emery wheel conical surface is a straight-bar.
The finishing of the described emery wheel conical surface is to guarantee that the plain line of the emery wheel conical surface is the mode of straight line.
Oblique relief grinding method of the present invention is compared with existing technology, following beneficial effect is arranged: on common gear milling lathe, clamping method routinely, employing standard emery wheel, adopt and adjust the bistrique free degree, need not manual knee of operator or roller trimming wheel molded lines, or in advance by computer by the molded lines of milling cutter tooth form trimming wheel to be processed and then carry out oblique relief grinding, be fit to workman's operation of different technologies grade, simplified operation widely, profile accuracy is controlled easily, improved production efficiency, reduced unit cost (for outer committee processing cost 1/5), can realize producing in batches.
Description of drawings
Fig. 1 is a bacterial type milling cutter construction schematic diagram.
Fig. 2 is utilization the present invention adjusts the bistrique free degree on gear milling lathe a schematic diagram.
Fig. 3 is the oblique relief grinding tooth pitch of a present invention face schematic diagram.
Fig. 4 is the oblique relief grinding transverse tooth thickness of a present invention face schematic diagram.
Fig. 5 is that the A-A of Fig. 4 is to view.
The specific embodiment
With reference to Fig. 1, Fig. 2, Fig. 3, the bacterial type milling cutter is made up of cutter hub 1, handle of a knife 2 two large divisions.Wherein, cutter hub 1 is the cutting tip of milling cutter, is made of the parts of tooth of oblique backed-off milling cutter transverse tooth thickness face 3, tooth pitch face 4, tooth bottom surface 5.Cutter hub 1 can be cone, cylinder or other has the rotary body of symmetrical centre key element.Bistrique 9 is installed on the bistrique frame 8, and emery wheel 10 is installed on bistrique 9 main shafts.The adjustment of described bistrique free degree size is to be realized by the angle of pulling bistrique frame 8 and bistrique 9.Through thick each cylindrical of finish turning milling cutter, mill groove, rake face, the thick teeth back of the body, the processing of turning blue of blade, shank quenching, sandblast, surface, grind centre bore, correct grinding handle of a knife cylindrical, grind accurate rake face after, with the milling cutter clamping on gear milling lathe, it is highly consistent with gear milling lathe spindle centerline 6 and guarantee that heart line 7 is the level of state to adjust heart line 7.Gear milling lathe bistrique 9 can be made following adjustment: grinding spindle can be adjusted up and down with respect to machine tool chief axis center height, and adjusting range is ± 20mm; Bistrique frame 8 can turn round in horizontal plane, and the angle of revolution is ± 30 °; Bistrique 9 can turn round in vertical guide, and the angle of revolution is ± 20 °.Before the relief grinding tooth pitch face 4, in horizontal plane, bistrique frame 8 is tiltedly shoveled the angular deflection direction by the tooth pitch face rotate an angle θ, make angle θ tiltedly shovel angle α greater than the tooth pitch face, less than 30 °, best selected angle θ=α+2 °, adjust the angle θ of bistrique frame 8 in level after, adding only needs trimming wheel 10 conical surfaces can relief grinding go out tooth pitch face 4 and tooth bottom surface 5 man-hour, and the finishing of emery wheel 10 conical surfaces can be that maybe can to protect the plain line of positive emery wheel 10 conical surfaces be the mode of straight line to straight-bar.
With reference to Fig. 1, Fig. 2, Fig. 4 and Fig. 5, before the relief grinding transverse tooth thickness face 3, earlier bistrique frame 8 is tiltedly shoveled the angular deflection direction by the transverse tooth thickness face and rotate an angle θ, make angle θ tiltedly shovel angle β greater than the transverse tooth thickness face, then in vertical guide, bistrique 9 is rotated an angle θ ' in the counterclockwise direction, the choosing value scope of angle θ ' is θ '=0 °～10 °, the selection of the angle θ ' size in the vertical guide is directly proportional with the diameter of oblique backed-off milling cutter, adjust bistrique frame 8 in horizontal plane and in the vertical guide institute partially the angle θ of biography and bistrique 9 in vertical guide behind the θ ', repair bistrique 10 conical surfaces again and get final product relief grinding transverse tooth thickness face 3, the finishing of emery wheel 10 conical surfaces can be that straight-bar can guarantee that maybe the plain line of the emery wheel conical surface is the mode of straight line.
Claims (4)
1. relief grinding method that is used for the oblique backed-off milling cutter of blade root milling cutter, through thick each cylindrical of finish turning milling cutter, mill groove, rake face, the thick teeth back of the body, the processing of turning blue of blade, shank quenching, sandblast, surface, grind centre bore, correct grinding handle of a knife cylindrical, grind accurate rake face after, clamping method routinely, the emery wheel of employing standard is characterized in that: before the relief grinding profile of tooth, the milling cutter clamping is contained on the gear milling lathe, adjustment is installed on the free degree of the bistrique on the bistrique frame, the trimming wheel conical surface again, relief grinding goes out the profile of tooth of milling cutter, and its work step is as follows:
(1) adjust bistrique and make the grinding spindle center line consistent with gear milling lathe spindle centerline height and guarantee that the grinding spindle center line is the level of state,
(2) when the relief grinding toothed surface, adjust the interference angle of bistrique in horizontal plane and the anglec of rotation in the vertical plane,
(3) interference angle of bistrique in horizontal plane should tiltedly shovel the angle greater than toothed surface, and less than 30 °, the angle in vertical guide is 0 °～10 °,
(4) adjust the bistrique free degree after, adding only needs the trimming wheel conical surface man-hour, can relief grinding go out milling cutter tooth form.
2. the relief grinding method of oblique backed-off milling cutter according to claim 1 is characterized in that: the angle of bistrique institute's deflection in horizontal plane equals toothed surface tiltedly shovels the angle and adds 2 °, and the angle of institute's deflection is directly proportional with described oblique backed-off milling cutter diameter in vertical guide.
3. the relief grinding method of oblique backed-off milling cutter according to claim 1, it is characterized in that: the dressing tool of the emery wheel conical surface is a straight-bar.
4. the relief grinding method of oblique backed-off milling cutter according to claim 1 is characterized in that: can guarantee that the plain line of the emery wheel conical surface is the mode of straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021337748A CN1166497C (en) | 2002-09-19 | 2002-09-19 | Scraping and grinding method of inclined relieving milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021337748A CN1166497C (en) | 2002-09-19 | 2002-09-19 | Scraping and grinding method of inclined relieving milling cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1410223A true CN1410223A (en) | 2003-04-16 |
| CN1166497C CN1166497C (en) | 2004-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021337748A Expired - Lifetime CN1166497C (en) | 2002-09-19 | 2002-09-19 | Scraping and grinding method of inclined relieving milling cutter |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101780560A (en) * | 2010-04-12 | 2010-07-21 | 如皋透平叶片制造有限公司 | Blade double inverted T-shaped blade root slot milling cutter of steam turbine |
| CN101500748B (en) * | 2006-03-03 | 2011-07-13 | 埃尔温容克尔机械制造有限公司 | Method for relief-grinding the cutting teeth of taps, thread formers, and similar tools, and grinding machine for carrying out said method |
| CN102218562A (en) * | 2010-04-19 | 2011-10-19 | 贺自清 | Angle steel relieving back-gouging machine |
| CN102266975A (en) * | 2010-06-02 | 2011-12-07 | 日立工具股份有限公司 | Firtree-shaped tool and processing method for impeller blade root using the tool |
| CN102500805A (en) * | 2011-11-03 | 2012-06-20 | 哈尔滨汽轮机厂有限责任公司 | Method for correcting rolling wheel molded line |
| CN102862039A (en) * | 2012-08-31 | 2013-01-09 | 哈尔滨汽轮机厂有限责任公司 | Method for machining blade root milling cutter |
| CN103111820A (en) * | 2013-03-20 | 2013-05-22 | 沈阳飞机工业（集团）有限公司 | Machining technology of tooth profile of milling cutter with wave-shaped cutter edge |
| CN104289886A (en) * | 2014-09-17 | 2015-01-21 | 哈尔滨汽轮机厂有限责任公司 | Machining method for small-diameter formed cutter |
| CN104493273A (en) * | 2014-10-16 | 2015-04-08 | 湖南大学 | Hob for processing band saw blade |
| CN105710426A (en) * | 2016-04-08 | 2016-06-29 | 哈尔滨汽轮机厂有限责任公司 | Semi-finishing milling cutter for large wheel groove and machining method of semi-finishing milling cutter |
| CN110026897A (en) * | 2019-05-13 | 2019-07-19 | 成都凯天电子股份有限公司 | It is mounted directly the internal grinding knife bar of grinding wheel |
| CN111890133A (en) * | 2020-08-31 | 2020-11-06 | 成都和鸿科技有限公司 | Processing method of palm tree-shaped tenon teeth |
-
2002
- 2002-09-19 CN CNB021337748A patent/CN1166497C/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101500748B (en) * | 2006-03-03 | 2011-07-13 | 埃尔温容克尔机械制造有限公司 | Method for relief-grinding the cutting teeth of taps, thread formers, and similar tools, and grinding machine for carrying out said method |
| CN101780560A (en) * | 2010-04-12 | 2010-07-21 | 如皋透平叶片制造有限公司 | Blade double inverted T-shaped blade root slot milling cutter of steam turbine |
| CN102218562B (en) * | 2010-04-19 | 2013-06-12 | 贺自清 | Angle steel relieving back-gouging machine |
| CN102218562A (en) * | 2010-04-19 | 2011-10-19 | 贺自清 | Angle steel relieving back-gouging machine |
| CN102266975A (en) * | 2010-06-02 | 2011-12-07 | 日立工具股份有限公司 | Firtree-shaped tool and processing method for impeller blade root using the tool |
| CN102500805A (en) * | 2011-11-03 | 2012-06-20 | 哈尔滨汽轮机厂有限责任公司 | Method for correcting rolling wheel molded line |
| CN102862039B (en) * | 2012-08-31 | 2014-08-13 | 哈尔滨汽轮机厂有限责任公司 | Method for machining blade root milling cutter |
| CN102862039A (en) * | 2012-08-31 | 2013-01-09 | 哈尔滨汽轮机厂有限责任公司 | Method for machining blade root milling cutter |
| CN103111820A (en) * | 2013-03-20 | 2013-05-22 | 沈阳飞机工业（集团）有限公司 | Machining technology of tooth profile of milling cutter with wave-shaped cutter edge |
| CN103111820B (en) * | 2013-03-20 | 2014-12-24 | 沈阳飞机工业（集团）有限公司 | Machining technology of tooth profile of milling cutter with wave-shaped cutter edge |
| CN104289886A (en) * | 2014-09-17 | 2015-01-21 | 哈尔滨汽轮机厂有限责任公司 | Machining method for small-diameter formed cutter |
| CN104493273A (en) * | 2014-10-16 | 2015-04-08 | 湖南大学 | Hob for processing band saw blade |
| CN105710426A (en) * | 2016-04-08 | 2016-06-29 | 哈尔滨汽轮机厂有限责任公司 | Semi-finishing milling cutter for large wheel groove and machining method of semi-finishing milling cutter |
| CN105710426B (en) * | 2016-04-08 | 2018-05-22 | 哈尔滨汽轮机厂有限责任公司 | A kind of processing method of large size semi-precise milling cutter for concave groove |
| CN110026897A (en) * | 2019-05-13 | 2019-07-19 | 成都凯天电子股份有限公司 | It is mounted directly the internal grinding knife bar of grinding wheel |
| CN111890133A (en) * | 2020-08-31 | 2020-11-06 | 成都和鸿科技有限公司 | Processing method of palm tree-shaped tenon teeth |
| CN111890133B (en) * | 2020-08-31 | 2021-05-25 | 成都和鸿科技有限公司 | Processing method of palm tree-shaped tenon teeth |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1166497C (en) | 2004-09-15 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: DONGFANG ELECTRIC GROUP DONGFANG STEAM TURBINE CO. Free format text: FORMER NAME OR ADDRESS: DONGFAN STEAM TURBINE FACTORY |
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| CP01 | Change in the name or title of a patent holder |
Address after: 618201 Deyang Mianzhu City, Sichuan Province town of Hanwang Patentee after: DONGFANG TURBINE Co.,Ltd. DTC Address before: 618201 Deyang Mianzhu City, Sichuan Province town of Hanwang Patentee before: Dongfang Steam Turbine Plant |
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| CX01 | Expiry of patent term | ||
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Granted publication date: 20040915 |