CN104440535B - Cylindrical grinder tailstock - Google Patents
Cylindrical grinder tailstock Download PDFInfo
- Publication number
- CN104440535B CN104440535B CN201410653429.0A CN201410653429A CN104440535B CN 104440535 B CN104440535 B CN 104440535B CN 201410653429 A CN201410653429 A CN 201410653429A CN 104440535 B CN104440535 B CN 104440535B
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- China
- Prior art keywords
- tail spindle
- stud
- hole
- sleeve
- spindle sleeve
- 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.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Turning (AREA)
Abstract
Cylindrical grinder tailstock, belongs to machine tool accessories technical field.Existing tailstock exists that tail spindle is relatively big to the impulsive force of workpiece end face, the axial line of tail spindle and work spindle exists the defect of certain little deviation.The present invention includes tailstock body, tail spindle, tail spindle sleeve, manual control mechanism, buffer spring, automatic controls, middle eccentric adjusting sleeve and concentricity guiding mechanism, by tail spindle sleeve towards workpiece one end be set with described in buffer spring, reduce impulsive force, play cushioning effect, by being driven tail spindle sleeve axially-movable offer to lean power by hydraulic oil cylinder driving, make the power that leans stable, and simultaneously with the manual control mechanism of rack-and-pinion auxiliary structure depositing；By eccentric adjusting sleeve in the middle of tail spindle bush outer sleeve dress, and the concentricity guiding mechanism being made up of fork, left transfer bar mechanism and right transfer bar mechanism, the micro-displacement deviation of the top tip part of tail spindle and the axial line of work spindle can be adjusted, easy to adjust, improve the machining accuracy of workpiece.
Description
Technical field
The invention belongs to machine tool accessories technical field, especially relevant with a kind of cylindrical grinder tailstock.
Background technology
The workpiece spindle device of cylindrical grinder and tailstock are mounted on workbench two ends, tailstock is coordinated by the sliding tenon structure of chute with workbench, the longer workpiece one end of axial length is by workpiece spindle device clamping, the other end drives the tail spindle on tailstock to lean support by promoting tailstock, the most manually control workpiece is produced and certain lean power, workpiece spindle device drive belt start building part rotate, grinding wheel unit carries out periphery processing to workpiece, during promoting tailstock to lean, if the tail spindle translational speed on tailstock is very fast, easily workpiece is produced bigger impulsive force, affect the machining accuracy of workpiece, and Non-follow control leans power and makes the power that leans unstable, and regulate inconvenience；Workpiece end face would generally arrange fabrication hole; top for tail spindle leans; can ensure that the machining accuracy of workpiece; but grinding machine is after reality processing certain time; the axial line of tail spindle and work spindle easily produces certain micro-displacement deviation; the axial line displacement of two axles the most in the horizontal direction easily produces certain little deviation, affects machining accuracy.
Summary of the invention
The purpose of the present invention is intended to that the tail spindle overcoming existing tail seat of grinding machine is relatively big to the impulsive force of workpiece end face, the axial line of tail spindle and work spindle exists the defect of certain little deviation, it is provided that a kind of impulsive force is little, be effectively improved the cylindrical grinder tailstock of machining accuracy.
nullFor this，The present invention is by the following technical solutions: cylindrical grinder tailstock，Including tailstock body、Tail spindle、Tail spindle sleeve and manual control mechanism，It is provided with on described tailstock body and is transversely mounted through hole，Described tail spindle sleeve slides to be threaded onto and described is transversely mounted through hole，Tail spindle is threaded onto the front end of tail spindle sleeve axially extending bore，Described manual control mechanism includes handle、Rack-and-pinion、Rotating shaft and pinion stand，Pinion stand is flush-mounted in described tailstock body，The pinion mounting holes of described tail spindle sleeve it is provided perpendicular on pinion stand，The gear of described rack-and-pinion is supported by axle and is installed in described pinion mounting holes，Pinion mounting holes is provided with a radial opening groove，The part making described gear is exposed at outside pinion mounting holes，The tooth bar of rack-and-pinion is arranged at described tail spindle excircle of sleeve along the axis direction of tail spindle sleeve and engages each other facing to gear side and with described gear，Described end, axle one end is fixing with described handle one end to be connected，Pass through rotary handle，Band moving axis and gear rotate，Owing to gear and tooth bar engage，Drive tooth bar axially-movable，So that tail spindle sleeve axially-movable；nullIt is characterized in that，Described tail stock device also includes buffer spring、Automatic controls、Middle eccentric adjusting sleeve and concentricity guiding mechanism，Tail spindle sleeve is close and is provided with the end face shoulder towards this end on the periphery of end, workpiece one end，Tail spindle sleeve is fixedly connected with baffle ring towards end, workpiece one end，Buffer spring is set in described tail spindle sleeve and two ends bear against in described baffle ring and end face shoulder，Described automatic controls includes oil cylinder、Connecting shaft、Linking arm、Disc spring and regulation runner，Oil cylinder is fixed on described tailstock body，Described connecting shaft one end is fixing with the described tail spindle sleeve other end to be connected，Described linking arm two ends are respectively fixedly connected with in described cylinder piston rod and the connecting shaft other end，Described regulation rotaring wheeling sleeve is loaded on described connecting shaft and is threaded connection between the two，Linking arm is played axial location regulation and positioning action，Described disc spring is set in described connecting shaft and two ends bear against in described linking arm and tail spindle sleeve back on the end face of workpiece one end，Drive linking arm and connecting shaft and tail spindle sleeve to slide axially when cylinder piston rod piston movement；nullMiddle eccentric adjusting sleeve is arranged at described tail spindle sleeve and is transversely mounted between through hole，Described concentricity guiding mechanism includes fork、Left transfer bar mechanism and right transfer bar mechanism，It is provided with in described tailstock body and axial with described is transversely mounted the adjustment hole that through hole is mutually perpendicular to and connects，The line in described fork one end is flush-mounted in described adjustment hole and the axial and tail spindle sleeve of fork and middle eccentric adjusting sleeve two center is in the same direction，Described left transfer bar mechanism and right transfer bar mechanism are divided into the left and right sides of the described fork other end，Described right transfer bar mechanism includes right stud，The tapped through hole matched with described right stud it is provided with on tailstock body bottom described adjustment hole，Right stud is threaded onto this tapped through hole makes left end be resisted against described fork right flank，Fork is played position-limiting action，Fork can be played certain thrust by rotation right stud simultaneously，Fork is made to swing certain angle；nullDescribed left transfer bar mechanism includes left stud、Shore head、Stud set、End cap and rotating disk，End cap is fixedly installed on the left of described tailstock body and covers and is encapsulated in described adjustment hole left end，It is provided with guide through hole on described end cap，Described stud set is provided with screwed hole of centre，Stud set is threaded onto described guide through hole and fixing with described end cap is connected，Described left stud passes described screwed hole of centre threaded engagement，The stud receiving hole coaxial with described left stud it is provided with on the left of described fork，The forward end activity of described left stud is embedded at this stud receiving hole，The aperture of stud receiving hole is arc groove face，Shore head and be provided with central through hole，Shore headgear be loaded on described left stud and be positioned at described adjustment hole，The described front end shoring head is spherical surface hill，Described spherical surface hill is made to closely cooperate with described arc groove face，Improve the fiting effect of left transfer bar mechanism and fork，To fork uniform force，Described rotating disk fixed cover is loaded on described left stud left end，Left stud can be driven to rotate by rotary turnplate，Thus drive and shore the thrust that head and left stud front end are certain to fork applying，Promotion fork swings.
As technique scheme being supplemented and perfect, present invention additionally comprises techniques below feature.
The periphery of described rotating disk is provided with angle index, when regulation, by controlling the angle of rotating disk rotation and then can control left stud and shore the movement travel of head, such that it is able to control the angle that fork swings.
The present invention can reach following beneficial effect: 1, by arranging spring at tail spindle sleeve towards workpiece one end, workpiece can be played cushioning effect, and arrange on tailstock body by the automatic controls of hydraulic oil cylinder driving, by lasting fuel feeding, workpiece offer is leaned power man-hour adding, improve stability；The decrement yellow to dish by controlling the movement travel regulation of cylinder piston rod, so regulation to tail spindle sleeve the power that leans, easy to adjust；Also being effectively increased production efficiency, manual control mechanism there is also simultaneously, it is achieved that Non-follow control and the tailstock automatically controlling and depositing；2, by adding middle eccentric adjusting sleeve, and by left transfer bar mechanism and right transfer bar mechanism middle eccentric adjusting sleeve swung and be adjusted, it is achieved the axiality adjustment to tail spindle with work spindle, easy to adjust, it is effectively increased machining accuracy.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram.
Fig. 2 is the left view direction schematic diagram of the present invention.
Fig. 3 is the A-A generalized section of Fig. 2.
Fig. 4 is the B-B generalized section of Fig. 2.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described in detail.
As shown in Fig. 1 ~ Fig. 4, the present invention includes tailstock body 1, tail spindle, tail spindle sleeve 11, manual control mechanism, buffer spring 15, automatic controls, middle eccentric adjusting sleeve 18 and concentricity guiding mechanism, it is provided with on tailstock body 1 and is transversely mounted through hole, described tail spindle sleeve 11 slides to be threaded onto and described is transversely mounted through hole, tail spindle is threaded onto the front end of tail spindle sleeve 11 axially extending bore, and middle eccentric adjusting sleeve 18 is arranged at described tail spindle sleeve 11 and is transversely mounted between through hole；Tail spindle sleeve 11 is close and is provided with the end face shoulder towards this end on the periphery of end, workpiece one end, tail spindle sleeve 11 is fixedly connected with baffle ring 16 towards end, workpiece one end, and buffer spring 15 is set in described tail spindle sleeve 11 and two ends bear against in described baffle ring 16 and end face shoulder；nullDescribed manual control mechanism includes handle 12、Rack-and-pinion、Rotating shaft 14 and pinion stand 13，Pinion stand 13 is flush-mounted in described tailstock body 1，The pinion mounting holes of described tail spindle sleeve 11 it is provided perpendicular on pinion stand 13，The gear 22 of described rack-and-pinion is supported by rotating shaft 14 and is installed in described pinion mounting holes，Pinion mounting holes is provided with a radial opening groove，The part making gear 22 is exposed at outside pinion mounting holes，The tooth bar 23 of rack-and-pinion is arranged at described tail spindle sleeve 11 periphery along the axis direction of tail spindle sleeve 11 and engages each other towards gear side and with described gear 22，Described end, axle rotating shaft 14 one end is fixing with described handle 12 one end to be connected，By rotary handle 12，Rotating shaft 14 and gear 22 is driven to rotate，Owing to gear 22 and tooth bar 23 engage，Drive tooth bar 23 axially-movable，So that tail spindle sleeve 11 axially-movable；
nullDescribed automatic controls includes oil cylinder 5、Connecting shaft 8、Linking arm 7、Disc spring 10 and regulation runner 9，Oil cylinder 5 is fixed on described tailstock body 1，Oil cylinder 5 is connected with pressure source by pipeline，And the electromagnetic valve controlling oil cylinder 5 can control to be turned on and off by control knob or foot switch，Described connecting shaft 8 one end is fixing with described tail spindle sleeve 11 other end to be connected，Described linking arm 7 two ends are respectively fixedly connected with in described cylinder piston rod 6 and connecting shaft 8 other end，Described regulation runner 9 is set in described connecting shaft 8 and is threaded connection between the two，And regulation runner 5 is made up of side by side two nuts，All it is set in connecting shaft 8 right-hand member，Linking arm 6 is played axial location regulation and positioning action，Two nuts can be effectively improved positioning action，Described disc spring 10 is set in described connecting shaft 8 and two ends bear against in described linking arm 7 and tail spindle sleeve 11 back on the end face of workpiece one end，Drive linking arm 7 and connecting shaft 8 and tail spindle sleeve 11 to slide axially when oil cylinder 5 plunger stem flange moves；nullDescribed concentricity guiding mechanism includes fork 21、Left transfer bar mechanism and right transfer bar mechanism，It is provided with in described tailstock body 1 and axial with described is transversely mounted the adjustment hole that through hole is mutually perpendicular to and connects，The line in described fork 21 one end is flush-mounted in described adjustment hole and the axial and tail spindle sleeve 11 of fork 21 and middle 18 liang of centers of eccentric adjusting sleeve is in the same direction，Described left transfer bar mechanism and right transfer bar mechanism are divided into the left and right sides of described fork 21 other end，Described right transfer bar mechanism includes right stud 17，The tapped through hole matched with described right stud 17 it is provided with on tailstock body 1 bottom described adjustment hole，Right stud 17 is threaded onto this tapped through hole makes left end be resisted against described fork 21 right flank，Fork 21 is played position-limiting action，Fork 21 can be played certain thrust by rotation right stud 17 simultaneously，Fork 21 is made to swing certain angle；nullDescribed left transfer bar mechanism includes left stud 4、Shore 19、Stud set 20、End cap 2 and rotating disk 3，End cap 2 is fixedly installed on the left of described tailstock body 1 and covers and is encapsulated in described adjustment hole left end，It is provided with guide through hole on described end cap 2，Described stud set 20 is provided with screwed hole of centre，Stud set 20 is threaded onto described guide through hole and fixing with described end cap 2 is connected，Described left stud 4 is through described screwed hole of centre threaded engagement，The stud receiving hole coaxial with described left stud 4 it is provided with on the left of described fork 21，The forward end activity of described left stud 4 is embedded at this stud receiving hole，The aperture of stud receiving hole is arc groove face，Shore 19 and be provided with central through hole，Shore 19 be set on described left stud 4 and be positioned at described adjustment hole，A described front end shoring 19 is spherical surface hill，Described spherical surface hill is made to closely cooperate with described arc groove face，Improve the fiting effect of left transfer bar mechanism and fork 21，To fork 21 uniform force，Described rotating disk 3 fixed cover is loaded on described left stud 4 left end，The periphery of rotating disk 3 is provided with angle index，Left stud 4 can be driven to rotate by the angle of rotary turnplate 3，By controlling angle that rotating disk 3 rotates and then controlling left stud 4 and shore the movement travel of 19，Thus drive shore 19 and left stud 4 front end fork 21 is applied certain thrust，Fork 21 is promoted to swing.
When the present invention uses, promote tailstock body 1 one segment distance until time on the top fabrication hole near workpiece of tail spindle, electromagnetic valve switch is controlled by control knob or foot switch, make oil cylinder 5 piston movement, drive the top axial workpiece direction motion on tail spindle sleeve 11 and sleeve, make the top fabrication hole relied on workpiece of tail spindle, owing to being provided with buffer spring 15, can effectively offset stroke, spring force compressing tail spindle, thus reduce the impulsive force to workpiece；Can also select directly to pull handle 12, make gear rotate, drive rack linear motion, i.e. tail spindle sleeve 11 linear motion to promote tail spindle to lean on the fabrication hole of workpiece, the most also plunger stem flange can be driven to move by tail spindle sleeve 11, make the power that leans stable.nullAfter work a period of time，When there is certain little deviation with the fabrication hole on workpiece end face in the top tip part of tail spindle，By rotary turnplate 3，Left stud 4 can be driven to rotate，Owing to stud set 20 is fixed with end cap 2，Make the axially-movable of left stud 4，Axle promotion fork 21 is shored such that it is able to drive，The rightest stud 17 also makees corresponding rotation，Make to shore a spherical surface hill of 19 to be resisted against all the time on fork 21 with the left end of right stud 17，Fork 21 is played positioning action，Fork 21 swings and drives middle eccentric adjusting sleeve 18 and tail spindle sleeve 11 to rotate to an angle centered by middle eccentric adjusting sleeve 18 centrage，It is in course of adjustment，The horizontal displacement that the axial line of tail spindle sleeve 11 moves is all higher than vertical displacement，The top tip part position making the tail spindle on tail spindle sleeve 11 is adjusted correspondingly，Have adjusted the axial line displacement of tail spindle and work spindle the most in the horizontal direction，Realize overlapping with the fabrication hole centrage on workpiece end face.
Claims (2)
- null1. cylindrical grinder tailstock，Including tailstock body、Tail spindle、Tail spindle sleeve and manual control mechanism，It is provided with on described tailstock body and is transversely mounted through hole，Described tail spindle sleeve slides to be threaded onto and described is transversely mounted through hole，Tail spindle is threaded onto the front end of tail spindle sleeve axially extending bore，Described manual control mechanism includes handle、Rack-and-pinion、Rotating shaft and pinion stand，Pinion stand is flush-mounted in described tailstock body，The pinion mounting holes of described tail spindle sleeve it is provided perpendicular on pinion stand，The gear of described rack-and-pinion is supported by axle and is installed in described pinion mounting holes，Pinion mounting holes is provided with a radial opening groove，The part making described gear is exposed at outside pinion mounting holes，The tooth bar of rack-and-pinion is arranged at described tail spindle excircle of sleeve along the axis direction of tail spindle sleeve and engages each other facing to gear side and with described gear，Described end, rotating shaft one end is fixing with described handle one end to be connected；nullIt is characterized in that: described tailstock also includes buffer spring、Automatic controls、Middle eccentric adjusting sleeve and concentricity guiding mechanism，Tail spindle sleeve is close and is provided with the end face shoulder towards this end on the periphery of end, workpiece one end，Tail spindle sleeve is fixedly connected with baffle ring towards end, workpiece one end，Buffer spring is set in described tail spindle sleeve and two ends bear against in described baffle ring and end face shoulder，Described automatic controls includes oil cylinder、Connecting shaft、Linking arm、Disc spring and regulation runner，Oil cylinder is fixed on described tailstock body，Described connecting shaft one end is fixing with the described tail spindle sleeve other end to be connected，Described linking arm two ends are respectively fixedly connected with in described cylinder piston rod and the connecting shaft other end，Described regulation rotaring wheeling sleeve is loaded on described connecting shaft and is threaded connection between the two，Described disc spring is set in described connecting shaft and two ends bear against in described linking arm and tail spindle sleeve back on the end face of workpiece one end；Middle eccentric adjusting sleeve is arranged at described tail spindle sleeve and is transversely mounted between through hole, described concentricity guiding mechanism includes fork, left transfer bar mechanism and right transfer bar mechanism, it is provided with in described tailstock body and axial with described is transversely mounted the adjustment hole that through hole is mutually perpendicular to and connects, the line in described fork one end is flush-mounted in described adjustment hole and the axial and tail spindle sleeve of fork and middle eccentric adjusting sleeve two center is in the same direction, described left transfer bar mechanism and right transfer bar mechanism are divided into the left and right sides of the described fork other end, described right transfer bar mechanism includes right stud, the tapped through hole matched with described right stud it is provided with on tailstock body bottom described adjustment hole, right stud is threaded onto this tapped through hole makes left end be resisted against described fork right flank；nullDescribed left transfer bar mechanism includes left stud、Shore head、Stud set、End cap and rotating disk，End cap is fixedly installed on the left of described tailstock body and covers and is encapsulated in described adjustment hole left end，It is provided with guide through hole on described end cap，Described stud set is provided with screwed hole of centre，Stud set is threaded onto described guide through hole and fixing with described end cap is connected，Described left stud passes described screwed hole of centre threaded engagement，The stud receiving hole coaxial with described left stud it is provided with on the left of described fork，The forward end activity of described left stud is embedded at this stud receiving hole，The aperture of stud receiving hole is arc groove face，Shore head and be provided with central through hole，Shore headgear be loaded on described left stud and be positioned at described adjustment hole，The described front end shoring head is spherical surface hill，Described spherical surface hill is made to closely cooperate with described arc groove face，Described rotating disk fixed cover is loaded on described left stud left end.
- Cylindrical grinder tailstock the most according to claim 1, it is characterised in that: the periphery of described rotating disk is provided with angle index.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410653429.0A CN104440535B (en) | 2014-11-17 | 2014-11-17 | Cylindrical grinder tailstock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410653429.0A CN104440535B (en) | 2014-11-17 | 2014-11-17 | Cylindrical grinder tailstock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104440535A CN104440535A (en) | 2015-03-25 |
| CN104440535B true CN104440535B (en) | 2017-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410653429.0A Expired - Fee Related CN104440535B (en) | 2014-11-17 | 2014-11-17 | Cylindrical grinder tailstock |
Country Status (1)
| Country | Link |
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| CN (1) | CN104440535B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108856744B (en) * | 2018-06-22 | 2024-03-22 | 哈挺精密机械（嘉兴）有限公司 | Machine tool tailstock with center driving and adjusting device |
| CN108907918A (en) * | 2018-07-13 | 2018-11-30 | 台州伟立智能设备有限公司 | A kind of cylindrical grinder |
| CN109834301A (en) * | 2019-04-22 | 2019-06-04 | 长江师范学院 | A kind of adjustable tailstock of bias |
| CN109909515A (en) * | 2019-04-25 | 2019-06-21 | 长江师范学院 | Eccentric adjustable tailstock |
| CN114850986A (en) * | 2022-04-11 | 2022-08-05 | 北平机床(浙江)股份有限公司 | Grinding machine tailstock |
| CN114770240A (en) * | 2022-04-11 | 2022-07-22 | 北平机床(浙江)股份有限公司 | Composite grinding machine assembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1449890A (en) * | 2002-04-09 | 2003-10-22 | 精工电子有限公司 | Cylindrical grinding machine |
| JP2010158757A (en) * | 2009-01-09 | 2010-07-22 | Ntn Corp | Grinding machine |
| CN202137686U (en) * | 2011-04-26 | 2012-02-08 | 安徽省尚美精密机械科技有限公司 | Automatic-tightening position-adjustable tailstock for grinding machine |
| CN202367592U (en) * | 2011-12-15 | 2012-08-08 | 湖南南方宇航工业有限公司 | Combination centre of cylindrical grinder |
| CN103962901A (en) * | 2013-02-01 | 2014-08-06 | 嘉禾工具有限公司 | Fully-automatic grinder |
-
2014
- 2014-11-17 CN CN201410653429.0A patent/CN104440535B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1449890A (en) * | 2002-04-09 | 2003-10-22 | 精工电子有限公司 | Cylindrical grinding machine |
| JP2010158757A (en) * | 2009-01-09 | 2010-07-22 | Ntn Corp | Grinding machine |
| CN202137686U (en) * | 2011-04-26 | 2012-02-08 | 安徽省尚美精密机械科技有限公司 | Automatic-tightening position-adjustable tailstock for grinding machine |
| CN202367592U (en) * | 2011-12-15 | 2012-08-08 | 湖南南方宇航工业有限公司 | Combination centre of cylindrical grinder |
| CN103962901A (en) * | 2013-02-01 | 2014-08-06 | 嘉禾工具有限公司 | Fully-automatic grinder |
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| CN104440535A (en) | 2015-03-25 |
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