CN2675339Y - Mainshaft structure capable of improving running accuracy of grinding wheel spindle of centerless grinding machine - Google Patents
Mainshaft structure capable of improving running accuracy of grinding wheel spindle of centerless grinding machine Download PDFInfo
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- CN2675339Y CN2675339Y CN 200420024649 CN200420024649U CN2675339Y CN 2675339 Y CN2675339 Y CN 2675339Y CN 200420024649 CN200420024649 CN 200420024649 CN 200420024649 U CN200420024649 U CN 200420024649U CN 2675339 Y CN2675339 Y CN 2675339Y
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- main shaft
- bearing
- ring
- face
- locking nut
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Abstract
The utility model relates to a spindle structure capable of improving the running accuracy of the grinding wheel spindle of a centerless grinding machine; wherein, the running accuracy and the rigidity of the spindle are higher. The utility model comprises a spindle; the spindle is installed on a frame for grinding; both ends of the spindle are respectively sheathed and connected with a grinding wheel and a pulley. The utility model is characterized in that at the points of the binding sites of both ends of the spindle and the frame for grinding, a roller bearing is installed on the spindle; a double-row cylindrical roller bearing is insatlled at the point of the binding site near the end of the grinding wheel; two angle-contact ball bearings arranged back to back or face to face are installed at the point of the binding site near the other end.
Description
(1) technical field
The utility model relates to the pith of centerless grinder, is specially the main axle structure that can improve centerless grinder grinding wheel spindle running accuracy.
(2) background technology
The grinding wheel spindle structure of centerless grinder is seen Fig. 1, it comprises main shaft 4, main shaft 4 is installed on mill frame 6 by bearing shell 2,5 respectively, the two ends of main shaft 4 are set with and are connected with emery wheel 1 and belt wheel 7, the shaft shoulder of main shaft middle part is connected with mill frame 6 by axial thrust mechanism 3, belt wheel 7 drives main shaft 4 during grinding machine work, and main shaft 4 drives emery wheel 1 and rotates.Operation principle according to bearing shell; main shaft 4 and bearing shell 2; the gap must be reserved with between 5 so that main shaft 4 and bearing shell 2 during main shaft 4 rotation; form oil film wedge between 5; because the own wt of emery wheel 1 and belt wheel 7 and main shaft 4; grinding machine stopped status lower main axis 4 will with bearing shell 2; 5 the part contact that is positioned at main shaft bottom; the moment that lathe starts; main shaft 4 will produce sliding friction with it; behind the frequent start-stop of lathe; main shaft 4 and bearing shell 2; 5 just have bigger wearing and tearing; main shaft 4 and bearing shell 2 like this; gap between 5 will increase; the running accuracy of main shaft 4 and rigidity reduce, and have influence on the machining accuracy of workpiece.
(3) summary of the invention
Grinding wheel spindle structure at existing centerless grinder, has the gap between main shaft and the bearing shell and along with the gap between both frequent frictions can increase, the shortcoming that the running accuracy of main shaft and rigidity easily reduce, the utility model provides another can improve the main axle structure of centerless grinder grinding wheel spindle running accuracy, and the running accuracy and the rigidity of main shaft are higher.
The technical solution of the utility model is such, and it comprises main shaft, and main shaft is installed on the mill frame, and the two ends of main shaft are set with and are connected with emery wheel and belt wheel, it is characterized in that main shaft two ends and the junction of grinding frame, is separately installed with rolling bearing on the main shaft.
It is further characterized in that the rolling bearing of described main shaft two ends suit, near emery wheel one end be Biserial cylindrical roller bearing, the other end is two angular contact ball bearings, back-to-back or face-to-face setting; Described Biserial cylindrical roller bearing outer cover is equipped with bearing block, the right side of this Biserial cylindrical roller bearing, the outside of main shaft is with adjusts circle, adjust the outside of circle, mill frame inwall is equipped with outer back-up ring, and the end face of adjusting circle and outer back-up ring contacts the inner ring and the outer ring of described bearing respectively, and its right end face of adjusting circle contacts with the thrust surface of main shaft, the right side main shaft of adjustment circle connects the mill frame with the dismounting nut that has been threaded, described outer back-up ring by bearing block; The left side of this Biserial cylindrical roller bearing, be with locking nut on the main shaft, be provided with outer back-up ring between locking nut and the bearing block, the end face of locking nut and outer back-up ring is the inner ring and the outer ring of contact bearing respectively, locking nut and main shaft are with being threaded, and the left side of locking nut is equipped with blind flange on the bearing block, described blind flange press-fits described outer back-up ring, and the junction of described blind flange and main shaft is provided with sealing ring; Between described two angular contact ball bearings and the mill frame, be set with bearing block on the bearing, between the two bearings, the outside of main shaft and the inboard of bearing block are separately installed with back-up ring, the end face of two back-up rings contacts with the inner ring and the outer ring of two side bearings, the left side of the inner ring of left side bearing contacts with the thrust surface of main shaft, and the left side contact sleeve of its outer ring is contained in the catch of main shaft, and this catch is connected with the mill frame by bearing block; The right side of the right bearing, the outside of main shaft and the inwall of bearing block are separately installed with locking nut, adjust circle, the end face of adjusting circle contacts with the cycle surface of described right side bearing, the end face of described adjustment circle is pressed with blind flange, blind flange is connected with screw with bearing block, the end face of locking nut stretches into cavity that blind flange and main shaft surround and contacts with the inner ring right side of described right side bearing, and locking nut and main shaft are with being threaded.
The utility model adopts after the said structure, thickness and the reinforcing of adjusting the inside and outside back-up ring of two angular contact ball bearings make the inner ring radial deformation in the inner ring of Biserial cylindrical roller bearing, make that the gap reduces between bearing roller and raceway, thereby the running accuracy of main shaft and rigidity are improved.Biserial cylindrical roller bearing near emery wheel one end, the precision height of its dead axle heart, the other end is that two angular contact ball bearings that are back-to-back or face-to-face installation can bear axial force, three's collocation has further guaranteed the running accuracy and the rigidity of main shaft, thereby avoided between prior art intermediate bushing and the main shaft must preset clearance and also this gap constantly increase the shortcoming that the running accuracy of main shaft and rigidity reduce.
(4) description of drawings
Fig. 1 is the cutaway view of the front view of the main axle structure of existing centerless grinder;
Fig. 2 is the cutaway view of front view of the present utility model.
(5) specific embodiment
See that Fig. 2 the utility model comprises main shaft 12, main shaft 12 is installed on mill frame 1, the two ends of main shaft 12 are set with and are connected with emery wheel 2 and belt wheel 18, main shaft 12 two ends and the junction of grinding frame 1, near suit Biserial cylindrical roller bearing 7 on the main shaft of emery wheel 2 one ends, the other end is two angular contact ball bearings 23,15 that are back-to-back or face-to-face installation, is back-to-back installation among Fig. 2.Biserial cylindrical roller bearing 7 outer cover are equipped with bearing block 8, the right side of bearing 7, the outside adjustment circle 9 of main shaft 12, adjust between circle 9 and the mill frame 1 outer back-up ring 10 is installed, adjust the outer ring and the inner ring of the end face difference contact bearing 7 of circle 9, outer back-up ring 10, its right end face of adjusting circle 9 contacts with the thrust surface of main shaft 12, adjusts the right side of circle 9, main shaft 12 is set with dismounting nut 11, and outer back-up ring 10 connects mill frame 1 by bearing block 8; The left side of Biserial cylindrical roller bearing 7, be with locking nut 5 on the main shaft 12, be provided with outer back-up ring 3 between locking nut 5 and the bearing block 8, locking nut and the inner ring of the end face difference contact bearing 7 of outer back-up ring 3 and the end face of outer ring, the left side of locking nut 5, blind flange 4 is installed on the bearing block 8, and blind flange 4 press-fits outer back-up ring 3, and the junction of itself and main shaft 12 is provided with skeleton sealing.Between two angular contact ball bearings 23,15 and the mill frame 1, the outer cover of bearing 23,15 is equipped with bearing block 14, between the bearing 23,15, the inboard of the outside of main shaft 12 and bearing block 14 is separately installed with inner shield ring 20, outer back-up ring 22, the end face of back-up ring 20,22 contacts with the inner ring and the outer ring of bearing 23,15 respectively, the left side of the inner ring of bearing 23 contacts with the thrust surface of main shaft 12, and the left side contact sleeve of its outer ring is contained in the catch 13 of main shaft 12, and catch 13 is connected with bearing block 14 by screw; The right side of bearing 15, the inwall of the outside of main shaft 12 and bearing block 14 is separately installed with locking nut 17 and adjusts circle 21, the end face of adjusting circle 21 contacts with the cycle surface of bearing 15, the end face of adjusting circle 21 is pressed with blind flange 16, blind flange 16 is connected with bearing block 14 usefulness screws, the end face of locking nut 17 stretches into cavity that blind flange 16 and main shaft 12 surround and contacts with the inner ring end face of bearing 15, and locking nut 17 is threaded with main shaft 12 usefulness.To dismantle nut 11 earlier during the utility model assembling and be placed in main shaft 12, bearing block 8, outer back-up ring 10, adjustment circle 9 and bearing block 14, catch 13 will be installed on the two ends of grinding frame 1 respectively, main shaft 12 be filled in the cavity of mill frame 1.To give certain axial load earlier before bearing 23,15 assembling, the stand out of Internal and external cycle of measuring bearing under this load to be to determine the thickness of inner shield ring 20, outer back-up ring 22, makes that the gap reduces between bearing assembling back rolling element and raceway.Biserial cylindrical roller bearing 7 and inner shield ring 20, outer back-up ring 22, two angular contact ball bearings 23,15 are installed on bearing block 8 and bearing block 14 respectively, inner shield ring 20, outer back-up ring 22 is positioned at bearing 23, between 15, from the left end reinforcing of main shaft 12 in the inner ring of bearing 7, inner ring is along main shaft 12 conical journal axial displacements, make the inner ring radial deformation, cause that the gap reduces between rolling element and raceway, thereby improve the running accuracy of main shaft, outer back-up ring 10 and the end face of adjusting circle 9 respectively with bearing 7 outer rings, the right side contact of inner ring, the locking nut 5 of packing into successively in the left side of bearing 7 then, outer back-up ring 3, blind flange 4 withstand outer back-up ring 3 and are connected with bearing block 8 usefulness screws.The inner ring left side of bearing 23 contacts with the thrust surface of main shaft 12, the left side, outer ring of catch 13 contact bearings 23, to adjust circle 21 and be placed in main shaft 12, then blind flange 16 is press-fited in adjusting circle 21, locking nut 18 is threaded with main shaft 12 usefulness, guarantee inner shield ring 20, outer back-up ring 22 contact with the Internal and external cycle of bearing 23,15 and locking nut 17, adjustment enclose 21 end face and contact with the right side of bearing 15 Internal and external cycles, blind flange 16 is connected with bearing block 14 usefulness screws, at last emery wheel 2 is installed on main shaft 12 by chuck, nut and belt wheel 18 by nut.
Claims (4)
1, can improve the main axle structure of centerless grinder grinding wheel spindle running accuracy, it comprises main shaft, and main shaft is installed on the mill frame, and the two ends of main shaft are set with and are connected with emery wheel and belt wheel, it is characterized in that main shaft two ends and the junction of grinding frame, be separately installed with rolling bearing on the main shaft.
2, the main axle structure that can improve centerless grinder grinding wheel spindle running accuracy according to claim 1, the rolling bearing that it is characterized in that described main shaft two ends suit, near emery wheel one end is Biserial cylindrical roller bearing, the other end is two angular contact ball bearings, back-to-back or face-to-face setting.
3, the main axle structure that can improve centerless grinder grinding wheel spindle running accuracy according to claim 2, it is characterized in that described Biserial cylindrical roller bearing outer cover is equipped with bearing block, the right side of this Biserial cylindrical roller bearing, the outside of main shaft is with adjusts circle, adjust the outside of circle, mill frame inwall is equipped with outer back-up ring, the end face of adjusting circle and outer back-up ring contacts the inner ring and the outer ring of described bearing respectively, the its right end face of adjusting circle contacts with the thrust surface of main shaft, the right side main shaft of adjustment circle connects the mill frame with the dismounting nut that has been threaded, described outer back-up ring by bearing block; The left side of this Biserial cylindrical roller bearing, be with locking nut on the main shaft, be provided with outer back-up ring between locking nut and the bearing block, the end face of locking nut and outer back-up ring is the inner ring and the outer ring of contact bearing respectively, locking nut and main shaft are with being threaded, and the left side of locking nut is equipped with blind flange on the bearing block, described blind flange press-fits described outer back-up ring, and the junction of described blind flange and main shaft is provided with sealing ring.
4, the main axle structure that can improve centerless grinder grinding wheel spindle running accuracy according to claim 2, it is characterized in that between two angular contact ball bearings and the mill frame, be set with bearing block on the bearing, between the two bearings, the outside of main shaft and the inboard of bearing block are separately installed with back-up ring, the end face of two back-up rings contacts with the inner ring and the outer ring of two side bearings, the left side of the inner ring of left side bearing contacts with the thrust surface of main shaft, the left side contact sleeve of its outer ring is contained in the catch of main shaft, and this catch is connected with the mill frame by bearing block; The right side of the right bearing, the outside of main shaft and the inwall of bearing block are separately installed with locking nut, adjust circle, the end face of adjusting circle contacts with the cycle surface of described right side bearing, the end face of described adjustment circle is pressed with blind flange, blind flange is connected with screw with bearing block, the end face of locking nut stretches into cavity that blind flange and main shaft surround and contacts with the inner ring right side of described right side bearing, and locking nut and main shaft are with being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420024649 CN2675339Y (en) | 2004-02-11 | 2004-02-11 | Mainshaft structure capable of improving running accuracy of grinding wheel spindle of centerless grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420024649 CN2675339Y (en) | 2004-02-11 | 2004-02-11 | Mainshaft structure capable of improving running accuracy of grinding wheel spindle of centerless grinding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2675339Y true CN2675339Y (en) | 2005-02-02 |
Family
ID=34483470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420024649 Expired - Fee Related CN2675339Y (en) | 2004-02-11 | 2004-02-11 | Mainshaft structure capable of improving running accuracy of grinding wheel spindle of centerless grinding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2675339Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101032803B (en) * | 2006-03-06 | 2010-09-08 | 无锡开源机床集团有限公司 | Main shaft structure of internal grinder element |
| CN102166732A (en) * | 2011-02-14 | 2011-08-31 | 威海三韩精密机械有限公司 | Turning device used in grinding machine |
| CN102489728A (en) * | 2011-12-16 | 2012-06-13 | 江苏新瑞重工科技有限公司 | Floating retainer structure on tail of spindle |
| CN102554772A (en) * | 2010-12-30 | 2012-07-11 | 大连冶金轴承股份有限公司 | Grinding wheel and main shaft assembly of spherical roller grinder |
| CN103357900A (en) * | 2012-03-26 | 2013-10-23 | 宜昌长机科技有限责任公司 | Structure for machine-tool rotating spindle |
| CN103567861A (en) * | 2012-07-23 | 2014-02-12 | 沈阳海默数控机床有限公司 | Vertical double-end-surface high accuracy grinding machine spindle |
| CN104074110A (en) * | 2014-06-04 | 2014-10-01 | 湖南海捷主轴科技有限公司 | Grinding device of milling vehicle for high-speed rail track and dismounting method |
| CN104842228A (en) * | 2015-05-14 | 2015-08-19 | 吴江市新科缝制设备有限公司 | Assistant grinding wheel device of centerless grinding machine |
| CN104889839A (en) * | 2015-06-16 | 2015-09-09 | 安徽省百基机电科技有限公司 | Bearing roller face grinding machine applicable to bearing rollers with different diameters |
| CN108000354A (en) * | 2017-12-29 | 2018-05-08 | 广州群创数控机床有限公司 | A kind of emery wheel general assembly mechanism and grinding machine |
| CN110202439A (en) * | 2019-07-04 | 2019-09-06 | 安徽莱恩电泵有限公司 | A kind of arrangement for grinding can be improved impeller channel smoothness |
-
2004
- 2004-02-11 CN CN 200420024649 patent/CN2675339Y/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101032803B (en) * | 2006-03-06 | 2010-09-08 | 无锡开源机床集团有限公司 | Main shaft structure of internal grinder element |
| CN102554772A (en) * | 2010-12-30 | 2012-07-11 | 大连冶金轴承股份有限公司 | Grinding wheel and main shaft assembly of spherical roller grinder |
| CN102166732A (en) * | 2011-02-14 | 2011-08-31 | 威海三韩精密机械有限公司 | Turning device used in grinding machine |
| CN102166732B (en) * | 2011-02-14 | 2013-12-11 | 威海三韩精密机械有限公司 | Turning device used in grinding machine |
| CN102489728A (en) * | 2011-12-16 | 2012-06-13 | 江苏新瑞重工科技有限公司 | Floating retainer structure on tail of spindle |
| CN103357900A (en) * | 2012-03-26 | 2013-10-23 | 宜昌长机科技有限责任公司 | Structure for machine-tool rotating spindle |
| CN103567861A (en) * | 2012-07-23 | 2014-02-12 | 沈阳海默数控机床有限公司 | Vertical double-end-surface high accuracy grinding machine spindle |
| CN103567861B (en) * | 2012-07-23 | 2016-06-08 | 沈阳海默数控机床有限公司 | Vertical grinding machine with double end faces high-precision grinder main shaft |
| CN104074110A (en) * | 2014-06-04 | 2014-10-01 | 湖南海捷主轴科技有限公司 | Grinding device of milling vehicle for high-speed rail track and dismounting method |
| CN104074110B (en) * | 2014-06-04 | 2016-01-06 | 湖南海捷主轴科技有限公司 | For grinding attachment and the method for dismounting of high-speed railway rail milling car |
| CN104842228A (en) * | 2015-05-14 | 2015-08-19 | 吴江市新科缝制设备有限公司 | Assistant grinding wheel device of centerless grinding machine |
| CN104889839A (en) * | 2015-06-16 | 2015-09-09 | 安徽省百基机电科技有限公司 | Bearing roller face grinding machine applicable to bearing rollers with different diameters |
| CN104889839B (en) * | 2015-06-16 | 2017-09-26 | 盐城市三川轴承制造有限公司 | Bearing roller end surface grinding machine suitable for different diameters |
| CN108000354A (en) * | 2017-12-29 | 2018-05-08 | 广州群创数控机床有限公司 | A kind of emery wheel general assembly mechanism and grinding machine |
| CN110202439A (en) * | 2019-07-04 | 2019-09-06 | 安徽莱恩电泵有限公司 | A kind of arrangement for grinding can be improved impeller channel smoothness |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20050202 Termination date: 20100211 |