CN1861274A - Composite activator used for vibration-cutting - Google Patents
Composite activator used for vibration-cutting Download PDFInfo
- Publication number
- CN1861274A CN1861274A CNA2006100853461A CN200610085346A CN1861274A CN 1861274 A CN1861274 A CN 1861274A CN A2006100853461 A CNA2006100853461 A CN A2006100853461A CN 200610085346 A CN200610085346 A CN 200610085346A CN 1861274 A CN1861274 A CN 1861274A
- Authority
- CN
- China
- Prior art keywords
- shaft
- vibration
- eccentric
- crank
- combined type
- 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.)
- Granted
Links
Images
Classifications
-
- 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
A combined vibration exciter for vibration cutting is composed of casing, frequency varying unit, motor, shaft coupling, drive shaft, bevel gear set, vertical shaft, crank-slide block unit, dual-eccentric unit, vibration isolating unit, spring, central shaft, flat key and flange shaft. It can transform a rotation movement to an adjustable vibration consisting of a torsional vibration and an axial vibration.
Description
Affiliated technical field
The present invention relates to a kind of combined type exciting device in vibrocutting field.By corresponding mechanical transfer and switching mechanism, this device can rotatablely move of input and be converted to by a twisting vibration and the complex vibration that axial vibration is formed by stacking, and can realize the independent control of twisting vibration, axial vibration easily.
Background technology
Since the self-excited oscillation cutting technology is original, domestic and international many scholars carry out deep research to it, and obtained a large amount of achievements in research, the result shows: the vibrocutting technology has fundamentally changed machining mechanism, have many traditional cutting technologies the technological effect that can not reach, for example: reduced cutting force, reduced cutting temperature, improved chip breaking chip removal situation, obviously improved crudy or the like.Therefore, vibrocutting technology is having broad application prospects aspect the processing of hard brittle material, difficult-to-machine material such as stainless steel, high temperature alloy, titanium alloy and composite.Although the vibrocutting technology has plurality of advantages, what still do not obtain at present applies its one of the main reasons: lack the exciting device that bearing capacity is big, simple in structure, easy to use, can satisfy different processing requests.
At present, the exciting device that is used for vibration drilling and vibrating and tapping can only be realized single vibration mode mostly, perhaps axial vibration or twisting vibration, and single vibration often can not satisfy the multiple requirement in the process.For example: process for drilling, stack axial vibration can improve the cutting ability of chip breaking condition and lubricant effect, raising chisel edge, but axial vibration makes drill bit produce the axial impact load to workpiece, has reduced the stability of process system, very easily causes the cutter tipping when the processing rigid material.Though the stack twisting vibration can be avoided impacting, thereby has protected cutter, and its weak point is also arranged: because chisel edge place amplitude is zero, the adverse effect of chisel edge is still very serious, can not obviously reduce axial force and outlet burr.Therefore, have only two kinds of vibrations are organically combined just and can reach the ideal technology effect.
Jilin Industry University adopts high performance Nd-Fe-Bo permanent magnet material, according to the magnetic characteristic that the same sex between the permanent magnet is repelled each other, there is a natural attraction between the sexes, by certain magnetic Circuit Design, has made a kind of permanent magnetism complex excitation device that is used on the drilling machine.Vibrator is divided into Moving plate and quiet dish two parts, and Moving plate and drill press spindle connect firmly, and quiet dish is fixed on the casing, along with the rotation of main shaft, can produce the two-way sine excitation waveform of axial vibration and twisting vibration, thereby satisfies the needs of complex vibration drilling.This apparatus structure is simple, easy to use, but this device need be done bigger improvement to original lathe, and is difficult for realizing the independent control of axial vibration and twisting vibration, has therefore limited its promotion and application greatly.
Zhongnan Polytechnic College adopts eccentric wheel oscillating rod mechanism and ball-screw nut mechanism to develop a kind of complex vibration device that is used on the lathe, can realize axial vibration, twisting vibration and complex vibration drilling processing by this device to workpiece, but the conversion of this device vibration mode trouble, be difficult for realizing the independent control of parameter, and can not satisfy the requirement of processing occasion mostly such as drilling machine, tapper.
Summary of the invention
In order to overcome the deficiency of said apparatus, the present invention proposes a kind of combined type exciting device that is used for vibrocutting.With existing exciting device ratio, the present invention is simple in structure, and parameter adjustment is convenient, can be widely used in Machining Technology fields such as vibrating and tapping, vibration drilling.
Device of the present invention is made up of housing, frequency converter, motor, shaft coupling, driving shaft, bevel gear pair, vertical axis, slider-crank mechanism, column gear transmission mechanism, double eccentric mechanism, vibration isolation unit, spring, central shaft, flat key and flange shaft.Wherein slider-crank mechanism comprises adjustment dish, slide block, crank; Column gear transmission mechanism comprises driving wheel, change gear, driven pulley; Double eccentric mechanism comprises eccentric shaft, eccentric bushing, needle bearing; Vibration isolation unit comprises thrust ball bearing, bearing top cover.This device is controlled the rotating speed of motor by frequency converter, and motor shaft and driving shaft connect by shaft coupling; Driving shaft, vertical axis and eccentric shaft are installed on the housing by bearing, driving wheel in the bevel gear pair is installed on the driving shaft, driven pulley is installed in the lower end of vertical axis, the upper end and the slider-crank mechanism of vertical axis are fixedly connected, slider-crank mechanism is connected with flange shaft by flat key, thereby realizes the transmission of twisting vibration; Connect and the transmission motion by column gear transmission mechanism between driving shaft and the eccentric shaft, eccentric shaft has identical eccentric throw with eccentric bushing, fix relative position between them by locking nut, the axial vibration that double eccentric mechanism produces is delivered to flange shaft through vibration isolation unit and central shaft; The thrust ball bearing inner ring interference fit of one end of central shaft and vibration isolation unit, the other end is threaded with flange shaft.
Described combined type exciting device is with the power source of frequency converter drive motor as axial vibration and twisting vibration.
Described combined type exciting device is converted to twisting vibration by slider-crank mechanism rotatablely moving, and is converted into axial vibration by double eccentric mechanism rotatablely moving.
Described combined type exciting device, flange shaft front end both can have been installed scroll chuck also can the fixing horizontal table top, can satisfy the installation needs of different parts; Flange shaft inside is designed to No. 2 taper holes of Mohs, be used for installing top, thereby made things convenient for centering operation.
Described combined type exciting device has been installed thrust ball bearing in the lower end of central shaft, weakens effectively and has eliminated the harmful effect of twisting vibration to double eccentric mechanism.
In addition, for the axial vibration that two eccentric structures are produced can be delivered to central shaft effectively, the pretightning force that the present invention produces by spring guarantees the good contact between them.
The invention has the advantages that:
1 is easy to make, and cost is low, is convenient to promote in the device except housing and minority element need processing separately, and most of parts are selection standard spare directly, thereby has reduced the workload and the cost of making.
2 is simple in structure, easy for installation, the original fortunately machine tool of versatility does not need to make under the prerequisite of any change, can be fixed on the workbench of radial drilling machine, upright drill, tapping machine and other corresponding lathe, directly carries out vibration drilling, vibrating and tapping processing.
3 vibration parameters are easy to adjust, can satisfy different processing request the present invention and can realize twisting vibration, three kinds of different mode of vibrations of axial vibration and complex vibration, and can realize the independent control and the adjusting of twisting vibration and axial vibration parameter.
4 parameters are regulated and are accurately compared with hydraulic exciting device, and bearing capacity of the present invention is big, lost amplitude is little.And this device is not selected the band drive mechanism in most of mechanical exciting devices for use, thereby has avoided the vibration frequency distortion that causes owing to belt creep under the heavily loaded situation.
Description of drawings
Fig. 1 combined type exciting device structure chart
20 vertical axises, 21 bevel gear pairs, 22 shaft couplings, 23 motor, 24 frequency converters are coiled in 19 adjustment of 1 flange shaft, 2 linings, 3 housings, 4 central shafts, 5 flat keys, 6 locking nuts, 7 springs, 8 thrust ball bearings, 9 bearing top covers, 10 driving shafts, 11 driving wheels, 12 change gears, 13 driven pulleys, 14 eccentric shafts, 15 eccentric bushings, 16 needle bearings, 17 cranks, 18 slide blocks
Fig. 2 center spindle structure figure
Fig. 3 column gear transmission mechanism partial schematic diagram
Adjust the purpose that the position of change gear 12 in chute 25 reaches the change gearratio by changing driving wheel 11 or driven pulley 13, reaching, finally satisfy the needs of change axial vibration frequency.
Fig. 4 crank structure figure
The structural representation of Fig. 5 adjustment dish
Adjustment dish 19 is fixedly mounted on the upper end of vertical axis 20 by centre bore, and the aperture that the distance center distance does not wait on the card is the fixing hole of slide block 18.In process, adjust the radial position of slide block 18 on adjustment dish 19 according to the requirement of different torsional amplitudes.
The specific embodiment
The present invention is a kind of combined type exciting device that is used for vibrocutting, under the prerequisite of having only a power source, by slider-crank mechanism and double eccentric mechanism, the present invention can be converted to rotatablely moving of motor output a twisting vibration and the complex vibration that axial vibration superposes with certain frequency and amplitude, and can realize the independent selection and the control of axial vibration, twisting vibration.Its attainable axial vibration frequency is that 10-50Hz (having level to regulate), amplitude are 0-0.4mm (step-less adjustment), and torsional frequency is that 1-100Hz (step-less adjustment), angular amplitude are 3 °-10 ° (having level to regulate).
As Fig. 1, the present invention is by housing (3), frequency converter (24), motor (23), shaft coupling (22), driving shaft (10), bevel gear pair (21), vertical axis (20), slider-crank mechanism, column gear transmission mechanism, double eccentric mechanism, vibration isolation unit, spring (7), central shaft (4), flat key (5) and flange shaft (1) are formed, wherein slider-crank mechanism comprises adjustment dish (19), slide block (18), crank (17), column gear transmission mechanism comprises driving wheel (11), change gear (12), driven pulley (13), double eccentric mechanism comprises eccentric shaft (14), eccentric bushing (15), needle bearing (16), vibration isolation unit comprise thrust ball bearing (8), bearing top cover (9); Connection between them is as follows with drive connection: the output shaft of motor (23) connects with driving shaft (10) by shaft coupling (22), the driving wheel of bevel gear pair (21) is installed on the driving shaft (10), driven pulley is installed in the lower end of vertical axis (20), and adjustment dish (19) is fixedly mounted on the upper end of vertical axis (20); Along with the rotation of adjustment dish (19), slide block (18) is fixed on above the adjustment dish (19), and the parallel slot of crank (17) small end is the sliding tray of slide block (18), and the big stomidium of crank (17) and flange shaft (1) matched in clearance are also transmitted twisting vibration by flat key (5); Connect and the transmission motion by column gear transmission mechanism between driving shaft (10) and the eccentric shaft (14), eccentric shaft (14) has identical eccentric throw with eccentric bushing (15), and fix relative position between them, thereby be converted into axial vibration rotatablely moving by locking nut (6); The inner ring of needle bearing (16) and eccentric bushing (15) interference fit, its outer ring closely contacts with bearing top cover (9) under the pretightning force effect of spring (7), bearing top cover (9) is connected with an end of central shaft (4) by thrust ball bearing (8), the other end of central shaft (4) is threaded with flange shaft (1), thereby realizes the transmission of axial vibration.
The operation principle of this device is: with the power source of motor 23 as axial vibration and twisting vibration, the transfer route of twisting vibration is: motor 23 → shaft coupling 22 → driving shaft 10 → bevel gear pair 21 → vertical axis 20 → adjustment dish 19 → slide block 18 → crank 17 → flat key 5 → flange shaft 1, realize the conversion of torsional frequency by the rotating speed of frequency converter 24 control motor 23, and the size of torsional amplitudes is adjusted by adjusting the radial position of slide block 18 on adjustment dish 19; The pipeline of axial vibration is: motor 23 → shaft coupling 22 → driving shaft 10 → driving wheel 11 → change gear 12 → driven pulley 13 → eccentric shaft 14 → eccentric bushing 15 → needle bearing 16 → bearing top cover 9 → thrust ball bearing 8 → central shaft 4 → flange shaft 1, by changing driving wheel 11 or driven pulley 13, change its gearratio, thereby reach the purpose of regulating shaft to vibration frequency, the size of axial amplitude realizes by the relative position of adjusting between eccentric shaft 14 and the eccentric bushing 15.
Its specific implementation process and step are as follows:
(1) the fixing and adjustment of device is placed on this device on the workbench of corresponding lathe according to different processing needs, after adjusting axis that its position makes flange shaft 1 and the pivot of lathe overlapping, with its locking; And according to processing needs chuck or level table are fixed on the flange shaft 1.
(2) the twisting vibration parameter is set according to processing request, adjusts torsional amplitudes by changing the radial position of slide block 18 on adjustment dish 19; Reach the purpose of conversion torsional frequency by the rotating speed of frequency converter 23 adjustment motor 22.
(3) the axial vibration parameter is set and unclamps locking nut 6 on the eccentric shaft 14, rotating eccentric sleeve 15 is adjusted axial amplitude, then locking; According to the proportionate relationship between axial vibration frequency and the torsional frequency, the axial vibration frequency is recently adjusted in the transmission that changes column gear transmission mechanism.
So far, setting completed can vibrate processing for corresponding vibration parameters.When only needing twisting vibration in the processing, change gear 12 can be taken off, cut off the drive path of axial vibration; When only needing axial vibration in the processing, slide block 18 can be taken away, cut off the drive path of twisting vibration.
Claims (3)
1. combined type exciting device that is used for vibrocutting, it is characterized in that: it is by housing (3), frequency converter (24), motor (23), shaft coupling (22), driving shaft (10), bevel gear pair (21), vertical axis (20), slider-crank mechanism, column gear transmission mechanism, double eccentric mechanism, vibration isolation unit, spring (7), central shaft (4), flat key (5) and flange shaft (1) are formed, wherein slider-crank mechanism comprises adjustment dish (19), slide block (18), crank (17), column gear transmission mechanism comprises driving wheel (11), change gear (12), driven pulley (13), double eccentric mechanism comprises eccentric shaft (14), eccentric bushing (15), needle bearing (16), vibration isolation unit comprise thrust ball bearing (8), bearing top cover (9); Connection between them is as follows with drive connection: the output shaft of motor (23) connects with driving shaft (10) by shaft coupling (22), the driving wheel of bevel gear pair (21) is installed on the driving shaft (10), driven pulley is installed in the lower end of vertical axis (20), and adjustment dish (19) is fixedly mounted on the upper end of vertical axis (20); Along with the rotation of adjustment dish (19), slide block (18) is fixed on above the adjustment dish (19), links to each other the big stomidium of crank (17) and flange shaft (1) matched in clearance with the chute of crank (17); Connect by column gear transmission mechanism between driving shaft (10) and the eccentric shaft (14), eccentric shaft (14) has identical eccentric throw with eccentric bushing (15), and fixes relative position between them by locking nut (6); The inner ring of needle bearing (16) and eccentric bushing (15) interference fit, its outer ring closely contacts with bearing top cover (9) under the pretightning force effect of spring (7), bearing top cover (9) is connected with an end of central shaft (4) by thrust ball bearing (8), and the other end of central shaft (4) is threaded with flange shaft (1).
2. a kind of combined type exciting device that is used for vibrocutting according to claim 1 is characterized in that described combined type exciting device, and the flange shaft front end can be installed scroll chuck or fixing horizontal table top; Flange shaft inside is designed to No. 2 taper holes of Mohs.
3. a kind of combined type exciting device that is used for vibrocutting according to claim 1 is characterized in that described combined type exciting device, in the lower end of central shaft thrust ball bearing has been installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610085346A CN100591431C (en) | 2006-06-12 | 2006-06-12 | Composite excitation device used for vibration-cutting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610085346A CN100591431C (en) | 2006-06-12 | 2006-06-12 | Composite excitation device used for vibration-cutting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1861274A true CN1861274A (en) | 2006-11-15 |
| CN100591431C CN100591431C (en) | 2010-02-24 |
Family
ID=37388856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610085346A Expired - Fee Related CN100591431C (en) | 2006-06-12 | 2006-06-12 | Composite excitation device used for vibration-cutting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100591431C (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103042435A (en) * | 2012-11-09 | 2013-04-17 | 浙江工业大学 | High-frequency slight-amplitude vibration milling test method of splicing quenching hardening die steel |
| CN103331616A (en) * | 2013-06-20 | 2013-10-02 | 重庆大学 | Double-eccentric type three-dimensional pose adjusting platform |
| CN104646264A (en) * | 2015-02-11 | 2015-05-27 | 曲绍毅 | Torsion vibration generating device |
| CN104923470A (en) * | 2015-05-12 | 2015-09-23 | 杭州电子科技大学 | Workpiece micro shock excitation device and workpiece micro shock excitation method for vibration machining |
| CN106000851A (en) * | 2016-07-01 | 2016-10-12 | 江苏科技大学 | Step and stepless regulation device and regulation method for eccentricity of eccentric shaft |
| CN106424831A (en) * | 2016-11-01 | 2017-02-22 | 河南理工大学 | Roller type low-frequency vibrational drilling worktable |
| CN109047853A (en) * | 2018-09-28 | 2018-12-21 | 盐城工学院 | A kind of deep hole machine spindle-torsion complex excitation experimental provision |
| CN109047852A (en) * | 2018-09-28 | 2018-12-21 | 盐城工学院 | A kind of deep hole machine spindle-torsion complex excitation test method |
| CN110052629A (en) * | 2019-05-27 | 2019-07-26 | 大连交通大学 | A kind of low-frequency vibration cutting chip breaking device |
| CN111515423A (en) * | 2020-04-02 | 2020-08-11 | 上海工程技术大学 | Longitudinal-torsional composite ultrasonic vibration drilling machine |
| CN113478030A (en) * | 2021-07-23 | 2021-10-08 | 南京航空航天大学 | Adjustable vibrating device for pulse electrolytic machining |
| CN113926682A (en) * | 2021-10-13 | 2022-01-14 | 袁晓恳 | High-strength extremely-low-frequency sound generator |
-
2006
- 2006-06-12 CN CN200610085346A patent/CN100591431C/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103042435A (en) * | 2012-11-09 | 2013-04-17 | 浙江工业大学 | High-frequency slight-amplitude vibration milling test method of splicing quenching hardening die steel |
| CN103331616A (en) * | 2013-06-20 | 2013-10-02 | 重庆大学 | Double-eccentric type three-dimensional pose adjusting platform |
| CN103331616B (en) * | 2013-06-20 | 2015-05-20 | 重庆大学 | Double-eccentric type three-dimensional pose adjusting platform |
| CN104646264A (en) * | 2015-02-11 | 2015-05-27 | 曲绍毅 | Torsion vibration generating device |
| CN104923470A (en) * | 2015-05-12 | 2015-09-23 | 杭州电子科技大学 | Workpiece micro shock excitation device and workpiece micro shock excitation method for vibration machining |
| CN106000851A (en) * | 2016-07-01 | 2016-10-12 | 江苏科技大学 | Step and stepless regulation device and regulation method for eccentricity of eccentric shaft |
| CN106000851B (en) * | 2016-07-01 | 2018-07-06 | 江苏科技大学 | A kind of eccentric shaft is away from having grade and stepless adjusting apparatus and method of adjustment |
| CN106424831A (en) * | 2016-11-01 | 2017-02-22 | 河南理工大学 | Roller type low-frequency vibrational drilling worktable |
| CN109047853A (en) * | 2018-09-28 | 2018-12-21 | 盐城工学院 | A kind of deep hole machine spindle-torsion complex excitation experimental provision |
| CN109047852A (en) * | 2018-09-28 | 2018-12-21 | 盐城工学院 | A kind of deep hole machine spindle-torsion complex excitation test method |
| CN109047853B (en) * | 2018-09-28 | 2019-07-12 | 盐城工学院 | A kind of deep hole machine spindle-torsion complex excitation experimental provision |
| CN109047852B (en) * | 2018-09-28 | 2019-10-08 | 盐城工学院 | A kind of deep hole machine spindle-torsion complex excitation test method |
| CN110052629A (en) * | 2019-05-27 | 2019-07-26 | 大连交通大学 | A kind of low-frequency vibration cutting chip breaking device |
| CN111515423A (en) * | 2020-04-02 | 2020-08-11 | 上海工程技术大学 | Longitudinal-torsional composite ultrasonic vibration drilling machine |
| CN111515423B (en) * | 2020-04-02 | 2021-04-06 | 上海工程技术大学 | Longitudinal-torsional composite ultrasonic vibration drilling machine |
| CN113478030A (en) * | 2021-07-23 | 2021-10-08 | 南京航空航天大学 | Adjustable vibrating device for pulse electrolytic machining |
| CN113478030B (en) * | 2021-07-23 | 2022-06-10 | 南京航空航天大学 | Adjustable vibrating device for pulse electrolytic machining |
| CN113926682A (en) * | 2021-10-13 | 2022-01-14 | 袁晓恳 | High-strength extremely-low-frequency sound generator |
| CN113926682B (en) * | 2021-10-13 | 2022-09-23 | 袁晓恳 | High-strength extremely-low-frequency sound generator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100591431C (en) | 2010-02-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100591431C (en) | Composite excitation device used for vibration-cutting | |
| CN203688187U (en) | Eccentric shock-excitation vibration table | |
| CN205237117U (en) | Complex vibration drilling device | |
| CN101850504B (en) | Vibrating hole formation device for controlling motion of main shaft by using two step motors | |
| CN109333652B (en) | Mechanical torsional vibration table based on double eccentric wheel modules | |
| CN102248216B (en) | Vibration inhibiting device in axial-flow type impeller processing | |
| CN202701434U (en) | Boring machining equipment | |
| CN202270644U (en) | Horizontal double-shaft high-efficiency vibrating screen | |
| CN203030507U (en) | Novel linear vibrating screen with variable motion trails | |
| CN1751808A (en) | Rotor axial system torsional activator | |
| CN102168745A (en) | Transmission speed change device | |
| CN201505819U (en) | Center bracket fine adjustment structure for power tools | |
| CN109047853B (en) | A kind of deep hole machine spindle-torsion complex excitation experimental provision | |
| CN100377493C (en) | Rotating magnetic field type driver for active controlling torsional vibration of rotational axis system | |
| CN203155502U (en) | Excitation type mechanical vibration device | |
| CN100460153C (en) | Profiling grinding-machine integrated planetary gear speed-reducing mechanism | |
| CN209811371U (en) | Double-lead-screw driving engraving machine | |
| CN110108480B (en) | Universal coupling diesel engine transmission system vibration mechanism research test bed and method | |
| CN101456084A (en) | Adjustable pitch multi-head drill | |
| CN111761084A (en) | Eccentric wheel vibration drilling machine | |
| CN103111940B (en) | A kind of heavy-duty numerical control roll grinder headstock main transmission | |
| CN2754783Y (en) | Vibrating tapping machine for realizing compound movement from low gear differential transmission | |
| CN201557039U (en) | Permanent magnetic transmission device | |
| RU2686518C1 (en) | Vibrations generating method | |
| CN2883791Y (en) | Power outputting device of reductor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100224 Termination date: 20130612 |