CN202768650U - Main shaft mechanism with pre-tightening thrust bearing - Google Patents
Main shaft mechanism with pre-tightening thrust bearing Download PDFInfo
- Publication number
- CN202768650U CN202768650U CN 201220461400 CN201220461400U CN202768650U CN 202768650 U CN202768650 U CN 202768650U CN 201220461400 CN201220461400 CN 201220461400 CN 201220461400 U CN201220461400 U CN 201220461400U CN 202768650 U CN202768650 U CN 202768650U
- Authority
- CN
- China
- Prior art keywords
- bearing
- ring
- main shaft
- thrust
- flange
- 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
Links
Images
Landscapes
- Support Of The Bearing (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The utility model relates to a main shaft mechanism with a pre-tightening thrust bearing and relates to a power transmission mechanism. The main shaft mechanism comprises a machine seat, a main shaft, an upper bearing, an upper flange, the thrust bearing, a lower bearing and a lower flange, and the upper bearing is installed on the main shaft and extends into a footstep on the upper side of a main shaft hole of the machine seat. A first pre-tightening corrugation spring standing thrust bearing movable ring is placed on a supporting ring on the lower side of the main shaft hole. A thrust bearing fixing ring is sleeved on the main shaft and abuts against an inner ring of the lower bearing of the main shaft. An outer ring of the lower bearing is located in a bearing sleeve installed in a lower section of the lower side of the main shaft hole. An adjusting shim is sleeved outside the bearing sleeve and located between the lower end face of the machine seat and the lower flange. A plurality of bolts respectively penetrate through the lower flange to be locked in the bearing sleeve to enable the lower flange to abut against the outer ring of the lower bearing. The plurality of bolts respectively penetrate through the lower flange and the adjusting shim to be locked on the machine seat, and a gap is left between the supporting ring and the bearing movable ring. The main shaft mechanism is high in operation accuracy and easy to adjust.
Description
Technical field
The utility model relates to a kind of power transmission mechanism, particularly relates to a kind ofly having larger axis to the main shaft of load.
Background technique
Has larger axis on the equipment of load at frictional testing machine etc., need to be with the mainshaft mechanism transferring power of thrust-bearing, Fig. 1 illustrates the cross-section structure that has now with the mainshaft mechanism of thrust-bearing: main shaft 2 ' is multidiameter shaft broad in the middle, that two is little, the upside in main shaft 2 ' stage casing 24 ' is provided with the upper bearing (metal) section 22 ' that diameter is slightly less than stage casing 24 ', the upper end portion of upper bearing (metal) section 22 ' has tool withdrawal groove 221 ', tool withdrawal groove 221 ' upside is the upper linkage section 21 ' of diameter minimum, and the periphery of upper linkage section 21 ' is established outside thread.The shaft shoulder 23 ' of projection is established in upper bearing (metal) section 22 ' lower end, and the diameter of the shaft shoulder 23 ' is greater than stage casing 24 '; The downside in main shaft 2 ' stage casing 24 ' is provided with the lower bearing section 25 ' that diameter is slightly less than stage casing 24 '.
Thrust-bearing 6 ', packing ring 5 ' and upper bearing (metal) 3 ' (deep groove ball bearing) are installed on the upper bearing (metal) section 22 ' of main shaft 2 ' successively, the retainer ring of thrust-bearing 6 ' downside withstands on the upper-end surface of the main shaft 2 ' shaft shoulder 23 ', and the active ring of thrust-bearing 6 ' upside withstands the inner ring surface of packing ring 5 ' lower end surface.The upper-end surface periphery of packing ring 5 ' is provided with upwardly extending upper flange, and this upper flange withstands on the lower end surface, outer ring of upper bearing (metal) 3 '.Have the straight hole of axial perforation on the support 1 ', spacer sleeve 9 ' is inserted in this straight hole.Main shaft 2 ' is installed in the straight hole of support 1 '.Thrust-bearing 6 ' on main shaft 2 ' stage casing 24 ', the shaft shoulder 23 ' and main shaft 2 ' the upper bearing (metal) section 22 ' stretches in the spacer sleeve 9 ' upper-end surface that the outer ring surface of packing ring 5 ' lower end surface withstands spacer sleeve 9 '.The outer ring of packing ring 5 ' and upper bearing (metal) 3 ' is arranged in the straight hole of support 1.Screw togather a round nut 211 ' on main shaft 2 ' the upper linkage section 21 ', the inward flange of interior annular withstands the inner ring of upper bearing (metal) 3 ' on this round nut 211 ' lower end surface, jackscrew 212 ' is screwed together on the round nut 211 ' radially in the screw, and this jackscrew 212 ' is fixed on this round nut 211 ' on the upper linkage section 21 ' of main shaft 2 '.Upper flange plate 4 ' is fixed on the upper-end surface of support 1 ' by several screws 41 ', hides the outer ring of upper bearing (metal) 3 '.Round nut 211 ' exposes from the endoporus of upper flange plate 4 '.Lower bearing 7 ' (deep groove ball bearing) is installed on the lower bearing section 25 ' of the main shaft 2 ' that is arranged in support 1 ' straight hole.Lower flange 8 ' is fixed on the lower end surface of support 1 ' by several screws 81 '.Lower flange 8 ' heads into lower ball bearing 7 ' outer ring in the straight hole of support 1 ', and the upper-end surface of lower bearing 7 ' outer ring props up the lower end surface of spacer sleeve 9 '.The underpart of main shaft 2 ' is protruding from the endoporus of lower flange 8 '.
For running stability and the running precision that improves this mainshaft mechanism, just must limit the axial float of main shaft 2 '.Need suitably to adjust the round nut 211 ' on main shaft 2 ' the upper linkage section 21 ' for this reason, make its inner ring that suitably compresses the first deep groove ball bearing 3 ', to apply suitable pretightening force by the first deep groove ball bearing 3 ' outer ring and packing ring 5 ' axial thrust bearing 6 '.But, in the assembling work of reality, because it is tighter that the inner ring of upper bearing (metal) 3 ' cooperates with main shaft 2 ' upper linkage section 21 ' usually, the assembler is difficult to round nut 211 ' is adjusted to suitable position, makes thrust-bearing 6 ' obtain suitable pretightening force and the axial float minimum of main shaft 2 '; Thrust-bearing 6 ' is pressed to get tension and be easy to damage; Thrust-bearing 6 ' is excessively loose, and the axial movement value of main shaft 2 ' is excessive, easily generation scuffing between the steel ball of upper bearing (metal) 3 ' and thrust-bearing 6 ' and raceway during unloaded and underloading, and vibration-generating, noise appears.
The model utility content
The utility model aims to provide the mainshaft mechanism with the pretension thrust-bearing that a kind of running precision is high and be easy to adjust.
The technical solution of the utility model is: a kind of mainshaft mechanism with the pretension thrust-bearing, and it comprises support, main shaft, lower bearing, upper flange plate, thrust-bearing, lower bearing and lower flange; Step is established in the spindle hole upper end that axially connects on the support, downside is established three sections ladder-type steps that increase successively; Upper linkage section, upper bearing (metal) section, stage casing, thrust-bearing section, lower bearing section, convex shoulder and lower linkage section that main shaft has diameter to increase successively from the top down; The upper bearing (metal) section; The inner ring of the upper bearing (metal) section suit upper bearing (metal) of main shaft, the outer ring of upper bearing (metal) is stretched in the support spindle hole upside step; Linkage section is protruding from the endoporus that is installed in the upper flange plate on the support upper-end surface on the main shaft; Bracing ring, the first pretension ripple spring of annular and the active ring of thrust-bearing are housed in the epimere of support spindle hole downside ladder-type step, lay the first pretension ripple spring on the step of the lower end surface exterior annular of this bracing ring, the active ring of this thrust-bearing is withstood in the lower end surface of this first pretension ripple spring; The fixed trap of thrust-bearing is contained on the main shaft thrust-bearing section and is arranged in the stage casing of support spindle hole downside ladder-type step with lower back-up ring; Installation shaft bearing sleeve in the hypomere of support spindle hole downside ladder-type step, lower bearing is installed in the endoporus of this bearing housing, and the inward flange of bearing housing upper end blocks the outer ring of lower bearing; The inner ring of lower bearing is sleeved on the main shaft lower bearing section, props up respectively lower back-up ring and the main shaft convex shoulder of thrust-bearing retainer ring downside; Adjust that pad is enclosed within the outside of bearing housing and between the lower end surface and lower flange of support for one; A plurality of screws pass respectively on the lower flange corresponding via hole and lock corresponding screw on the bearing housing, make the annular flange flange of inboard, lower flange upper-end surface hold out against the outer ring of lower bearing; The via hole that has in addition a plurality of screws to pass respectively on the lower flange correspondence on corresponding via hole and this adjustments pad is locked corresponding screw on the support, makes between the active ring of this bracing ring and thrust-bearing and leaves a gap; The convex shoulder of main shaft and lower linkage section are protruding from the center hole of lower flange.
The utility model utilizes the first pretension ripple spring of thrust-bearing upside that thrust-bearing is applied pretightening force, by using bearing housing to install bearing and with the gap between the active ring of adjusting pad control bracing ring and thrust-bearing, the axial float that produces because of the axial clearance of thrust-bearing own with the volitional check main shaft; Guaranteed the operation of main shaft highi degree of accuracy.Wear and tear after using when lower bearing and thrust-bearing are long-term, the axial clearance increase, need reduce to adjust the thickness of pad, the gap that just can eliminate increase.During installation and during later maintenance, the adjustment operation of axial clearance is all very simple.
Implement in the structure preferred: the second pretension ripple spring that outer washer and annular are housed in the described support spindle hole upside step; This second pretension ripple spring clip is between the outer ring and this outer washer of described upper bearing (metal).Suitably adjust the thickness of outer washer, can make the second pretension ripple spring press the outer ring of bearing with suitable pretightening force top.Eliminate the axial clearance of upper bearing (metal) itself, improve running precision.
Implement in the structure preferred: described upper bearing (metal) is deep groove ball bearing; Described lower bearing is made of the mode of two angular contact bearings with the DT combination, and the inward flange of described bearing housing upper end blocks the outer ring of the first angular contact bearing, and the annular flange flange of inboard, described lower flange upper-end surface holds out against the outer ring of the second angular contact bearing; The inner ring of two angular contact bearings is sleeved on the lower bearing section of described main shaft, and wherein the inner ring of the first angular contact bearing props up the retainer ring of described thrust-bearing through described lower back-up ring, and the inner ring of the second angular contact bearing props up described main shaft convex shoulder.Use two angular contact bearings to substitute the original deep groove ball bearing of main shaft downside with the angular contact bearing group that the DT compound mode consists of, can improve stationarity and the running precision of main shaft.
Implement in the structure preferred: described adjustment pad is comprised of left and right two semicircular ring; Each semicircular ring both ends of the surface is respectively established a half slot that has equal radii with described via hole, the middle part of each semicircular ring inner peripheral surface is provided with a long strip groove, and the width of this long strip groove equals the diameter of described via hole and the half slot among of this long strip groove and both ends of the surface is established a described via hole; Establish a draw-in groove at each via hole and this side end face among on the outer circumferential face of each semicircular ring.The adjustment pad that this left and right two semicircular ring form can not removed the situation of lower flange and is changed when maintenance.During replacing, four screws of four via holes are passed respectively in lower dismounting, and unclamp the screw in the via hole that passes per two docking half slots compositions and pass two screws in the long strip groove, just can use respectively grab to hook draw-in groove on left and right two semicircular ring, make left and right two semicircular ring separately, and then take out left and right two semicircular ring.Change the operation of adjusting pad thereby simplify, when being convenient to later maintenance, reduce to adjust the thickness of pad, adjust axial clearance.
The mainshaft mechanism of the utility model band pretension thrust-bearing, adopt above-mentioned structure, the circular runout of main shaft is controlled within 0.002 millimeter, and the axial float of main shaft is controlled within the 0.005-0.01 millimeter, has effectively improved main shaft traveling comfort and running precision.The steel ball of upper bearing (metal) and thrust-bearing and the scuffing between the raceway when it can avoid zero load and underloading, and vibration and noise.
Description of drawings
Fig. 1 is for having the cross-sectional view with the mainshaft mechanism of thrust-bearing now.
Fig. 2 is an embodiment's of mainshaft mechanism of the utility model band pretension thrust-bearing cross-sectional view.
Fig. 3 is the local enlarged diagram of A section among Fig. 2.
Fig. 4 is the local enlarged diagram of B section among Fig. 2.
Fig. 5 is the local enlarged diagram of C section among Fig. 2.
Fig. 6 is the structural representation of adjusting pad among Fig. 2 embodiment.
Embodiment
The cross-section structure of a preferred embodiment of mainshaft mechanism of the utility model band pretension thrust-bearing is please referring to Fig. 2.It comprises support 1, main shaft 2, upper bearing (metal) 3, upper flange plate 4, pretension assembly 5, thrust-bearing 6, lower bearing 7, lower flange 8 and adjusts pad 9.
Have the spindle hole 12 of axial perforation on the support 1, in order to insert and install main shaft 2.Step 11 is established in the upper end of spindle hole 12, installs bearing 3(deep groove ball bearing in the step 11) and pretension assembly 5.Spindle hole 12 downsides are established three sections ladder-type steps, installed thrust bearing 6 and lower back-up ring 64 in the epimere of this ladder-type step and the stage casing 13; Hypomere 14 apertures of this ladder-type step are maximum, in order to the bearing housing 71 that lower bearing 7 is installed.
Seven sections the multidiameter shaft that main shaft 2 increases successively for diameter from the top down, main shaft 2 upper ends are the upper linkage section 21 of diameter minimum.Upper linkage section 21 downsides are upper bearing (metal) section 22, and the upper end portion of upper bearing (metal) section 22 has draw-in groove 221, and upper bearing (metal) section 22 downsides are main shaft 2 stage casings 23, thrust-bearing section 24, lower bearing section 25, transition convex shoulder 26, convex shoulder 27 and lower linkage section 28 successively.Main shaft 2 is installed in the spindle hole 12 of support 1.
Please referring to Fig. 3: inner washer 223 is set on main shaft 2 upper bearing (metal) sections, 22 downsides and leans the upper-end surface in main shaft 2 stage casings 23, the inner ring 31 of upper bearing (metal) 3 is sleeved on main shaft 2 upper bearing (metal) sections 22 upsides, and the annular flange flange 2231 of inboard, inner washer 223 upper-end surface props up inner ring 31 lower end surfaces of upper bearing (metal) 3.Spring collar 222 is stuck in the draw-in groove 221 of main shaft 2 upsides and stops the inner ring 31 of upper bearing (metal) 3 from upside.Pretension assembly 5 is comprised of the second pretension ripple spring 51 of outer washer 52 and annular.Outer washer 52 and the second pretension ripple spring 51 are installed in the underpart of support 1 spindle hole 12 upside steps 11.Inner washer 223 is arranged in the endoporus of outer washer 52 and the second pretension ripple spring 51.The outer ring 32 of upper bearing (metal) 3 is installed in the middle part of support 1 spindle hole 12 upside steps 11.The second pretension ripple spring 51 is clipped between the outer ring 32 and outer washer 52 of upper bearing (metal) 3.
Suitably select the thickness of inner washer 223, can make spring collar 222 block the inner ring 31 of upper bearing (metal) 3 and it can not be moved.The slightly larger in diameter of inner washer 223 is removed spring collar 222 and is pushed main shaft 2 downwards in the diameter of spindle hole 12 during dismounting main shaft 2, because inner washer 223 withstands the inner ring 31 of upper bearing (metal) 3, upper bearing (metal) 3 just can be resigned from office from main shaft 2.
Please referring to Fig. 4: a bracing ring 62 and a upper back-up ring 63 are installed in the epimere of support 1 spindle hole 12 downside ladder-type steps, 621 outsides, lower end surface of this bracing ring 62 have the step of annular and lay the first pretension ripple spring 61 of annular, two end faces of this first pretension ripple spring 61 withstand respectively bracing ring 62 and upper back-up ring 63, make and leave a gap between back-up ring 63 and the bracing ring 62.Thrust-bearing 6 is clipped between the upper back-up ring 63 of annular lower back-up ring 61 and annular, the active ring 601 of thrust-bearing 6 also is contained in the epimere of support 1 spindle hole 12 downside ladder-type steps, and the effect of upper back-up ring 63 is with the active force Transmit evenly of the first pretension ripple spring 61 active ring 601 to thrust-bearing 6.The retainer ring 602 of thrust-bearing 6 is sleeved on the main shaft 2 thrust-bearing sections 24 with lower back-up ring 64 and is arranged in the stage casing 13 of support 1 spindle hole 12 downside ladder-type steps.The flange 611 of lower back-up ring 61 lower end surface interior annular withstands on the inner ring 701 of the first angular contact bearing of lower bearing 7.
Please referring to Fig. 5: bearing housing 71 is installed in the hypomere 14 of support 1 spindle hole 12 downside ladder-type steps, and two angular contact bearings consist of lower bearing 7 in the mode of DT combination and are installed in the endoporus of bearing housing 71.The inward flange 711 of bearing housing 71 upper ends blocks the outer ring 702 of the first angular contact bearing.The inner ring 701,705 of two angular contact bearings is sleeved on the lower bearing section 25 of main shaft 2, wherein the inner ring 701 of the first angular contact bearing inner ring 705 that withstands flange 641, the second angular contact bearings of inboard, lower back-up ring 64 lower end surface props up the lower end surface of main shaft 2 transition convex shoulders 26.Adjust that pad 9 is enclosed within the outside of bearing housing 71 and between the lower end surface and lower flange 8 of support 1.A plurality of screws 91 pass respectively via hole 802 corresponding on the lower flange 8 and lock corresponding screw 712 on the bearing housing 71, make inboard, lower flange 8 upper-end surface establish the outer ring 704 that annular flange flange 804 holds out against the second angular contact bearing, outer ring 702,704, bearing housing 71 and the lower flange 8 of two angular contact bearings are connected.
The via hole 901 that has in addition a plurality of screws 81 to pass respectively correspondence on via hole corresponding on the lower flange 8 803 and the adjustment pad 9 is locked corresponding screw 18 on the support 1, this adjustment pad 9, lower flange 8 are connected with support 1, and make gap between the upper back-up ring 63 on bracing ring 62 and thrust-bearing 6 active rings 601 in the scope of 0.005-0.01 millimeter.The convex shoulder 27 of main shaft 2 and lower linkage section 28 are protruding from the center hole 801 of lower flange 8.
The above only is the utility model preferred embodiment, does not limit the scope that the utility model is implemented with this, and the equivalence of doing according to the technical solution of the utility model and description changes and modification, all should belong to the scope that the utility model is contained.
Claims (4)
1. mainshaft mechanism with the pretension thrust-bearing, it comprises support, main shaft, lower bearing, upper flange plate, thrust-bearing, lower bearing and lower flange; It is characterized in that: step is established in the spindle hole upper end that axially connects on the support, downside is established three sections ladder-type steps that increase successively; Upper linkage section, upper bearing (metal) section, stage casing, thrust-bearing section, lower bearing section, convex shoulder and lower linkage section that main shaft has diameter to increase successively from the top down; The upper bearing (metal) section; The inner ring of the upper bearing (metal) section suit upper bearing (metal) of main shaft, the outer ring of upper bearing (metal) is stretched in the support spindle hole upside step; Linkage section is protruding from the endoporus that is installed in the upper flange plate on the support upper-end surface on the main shaft; Bracing ring, the first pretension ripple spring of annular and the active ring of thrust-bearing are housed in the epimere of support spindle hole downside ladder-type step, lay the first pretension ripple spring on the step of the lower end surface exterior annular of this bracing ring, the active ring of this thrust-bearing is withstood in the lower end surface of this first pretension ripple spring; The fixed trap of thrust-bearing is contained on the main shaft thrust-bearing section and is arranged in the stage casing of support spindle hole downside ladder-type step with lower back-up ring; Installation shaft bearing sleeve in the hypomere of support spindle hole downside ladder-type step, lower bearing is installed in the endoporus of this bearing housing, and the inward flange of bearing housing upper end blocks the outer ring of lower bearing; The inner ring of lower bearing is sleeved on the main shaft lower bearing section, props up respectively lower back-up ring and the main shaft convex shoulder of thrust-bearing retainer ring downside; Adjust that pad is enclosed within the outside of bearing housing and between the lower end surface and lower flange of support for one; A plurality of screws pass respectively on the lower flange corresponding via hole and lock corresponding screw on the bearing housing, make the annular flange flange of inboard, lower flange upper-end surface hold out against the outer ring of lower bearing; The via hole that has in addition a plurality of screws to pass respectively on the lower flange correspondence on corresponding via hole and this adjustments pad is locked corresponding screw on the support, makes between the active ring of this bracing ring and thrust-bearing and leaves a gap; The convex shoulder of main shaft and lower linkage section are protruding from the center hole of lower flange.
2. a kind of mainshaft mechanism with the pretension thrust-bearing according to claim 1 is characterized in that: the second pretension ripple spring that outer washer and annular are housed in the described support spindle hole upside step; This second pretension ripple spring clip is between the outer ring and this outer washer of described upper bearing (metal).
3. a kind of mainshaft mechanism with the pretension thrust-bearing according to claim 1 and 2, it is characterized in that: described upper bearing (metal) is deep groove ball bearing; Described lower bearing is made of the mode of two angular contact bearings with the DT combination, and the inward flange of described bearing housing upper end blocks the outer ring of the first angular contact bearing, and the annular flange flange of inboard, described lower flange upper-end surface holds out against the outer ring of the second angular contact bearing; The inner ring of two angular contact bearings is sleeved on the lower bearing section of described main shaft, and wherein the inner ring of the first angular contact bearing props up the retainer ring of described thrust-bearing through described lower back-up ring, and the inner ring of the second angular contact bearing props up described main shaft convex shoulder.
4. a kind of mainshaft mechanism with the pretension thrust-bearing according to claim 1 and 2, it is characterized in that: described adjustment pad is comprised of left and right two semicircular ring; Each semicircular ring both ends of the surface is respectively established a half slot that has equal radii with described via hole, the middle part of each semicircular ring inner peripheral surface is provided with a long strip groove, and the width of this long strip groove equals the diameter of described via hole and the half slot among of this long strip groove and both ends of the surface is established a described via hole; Establish a draw-in groove at each via hole and this side end face among on the outer circumferential face of each semicircular ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220461400 CN202768650U (en) | 2012-09-11 | 2012-09-11 | Main shaft mechanism with pre-tightening thrust bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220461400 CN202768650U (en) | 2012-09-11 | 2012-09-11 | Main shaft mechanism with pre-tightening thrust bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202768650U true CN202768650U (en) | 2013-03-06 |
Family
ID=47775227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220461400 Expired - Fee Related CN202768650U (en) | 2012-09-11 | 2012-09-11 | Main shaft mechanism with pre-tightening thrust bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202768650U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174758A (en) * | 2013-03-29 | 2013-06-26 | 中国科学院上海光学精密机械研究所 | Anti-locking rotating device |
| CN104325406A (en) * | 2014-09-19 | 2015-02-04 | 新昌县嘉瑞机械有限公司 | Dresser self-warning device for groove grinder on outer ring of ball bearing |
| CN107511725A (en) * | 2016-11-07 | 2017-12-26 | 襄阳博亚精工装备股份有限公司 | Precision movable center device |
| CN109332732A (en) * | 2018-11-19 | 2019-02-15 | 浙江万丰科技开发股份有限公司 | One kind can trailing type stability mainshaft mechanism |
| CN109530594A (en) * | 2018-12-29 | 2019-03-29 | 武汉新威奇科技有限公司 | The driving screw axial clearance adjusting mechanism of fly press |
| CN109848348A (en) * | 2018-12-29 | 2019-06-07 | 武汉新威奇科技有限公司 | A kind of numerical control direct-drive electric screw press |
| CN110039444A (en) * | 2019-04-22 | 2019-07-23 | 薛超 | A kind of spindle assemblies of biplane grinding machine |
| CN110664587A (en) * | 2019-09-30 | 2020-01-10 | 太原理工大学 | Spherical parallel wrist rehabilitation robot |
| CN112013034A (en) * | 2019-05-31 | 2020-12-01 | 必能信超声(上海)有限公司 | Axial force isolation device |
| CN115145001A (en) * | 2022-07-22 | 2022-10-04 | 中国科学院长春光学精密机械与物理研究所 | Secondary mirror supporting structure with pretightening force |
-
2012
- 2012-09-11 CN CN 201220461400 patent/CN202768650U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174758A (en) * | 2013-03-29 | 2013-06-26 | 中国科学院上海光学精密机械研究所 | Anti-locking rotating device |
| CN104325406A (en) * | 2014-09-19 | 2015-02-04 | 新昌县嘉瑞机械有限公司 | Dresser self-warning device for groove grinder on outer ring of ball bearing |
| CN107511725A (en) * | 2016-11-07 | 2017-12-26 | 襄阳博亚精工装备股份有限公司 | Precision movable center device |
| CN107511725B (en) * | 2016-11-07 | 2024-03-26 | 襄阳博亚精工装备股份有限公司 | Precise movable center device |
| CN109332732A (en) * | 2018-11-19 | 2019-02-15 | 浙江万丰科技开发股份有限公司 | One kind can trailing type stability mainshaft mechanism |
| CN109332732B (en) * | 2018-11-19 | 2024-01-12 | 浙江万丰科技开发股份有限公司 | But follow-up stability spindle unit |
| CN109848348B (en) * | 2018-12-29 | 2023-10-20 | 武汉新威奇科技有限公司 | Numerical control direct-drive type electric screw press |
| CN109530594A (en) * | 2018-12-29 | 2019-03-29 | 武汉新威奇科技有限公司 | The driving screw axial clearance adjusting mechanism of fly press |
| CN109848348A (en) * | 2018-12-29 | 2019-06-07 | 武汉新威奇科技有限公司 | A kind of numerical control direct-drive electric screw press |
| CN110039444A (en) * | 2019-04-22 | 2019-07-23 | 薛超 | A kind of spindle assemblies of biplane grinding machine |
| CN112013034A (en) * | 2019-05-31 | 2020-12-01 | 必能信超声(上海)有限公司 | Axial force isolation device |
| CN110664587B (en) * | 2019-09-30 | 2021-11-05 | 太原理工大学 | Spherical parallel wrist rehabilitation robot |
| CN110664587A (en) * | 2019-09-30 | 2020-01-10 | 太原理工大学 | Spherical parallel wrist rehabilitation robot |
| CN115145001A (en) * | 2022-07-22 | 2022-10-04 | 中国科学院长春光学精密机械与物理研究所 | Secondary mirror supporting structure with pretightening force |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202768650U (en) | Main shaft mechanism with pre-tightening thrust bearing | |
| CN100368126C (en) | Small high-speed constant-pressure prepressing apparatus of main bearing | |
| CN107830065A (en) | Paired thrust ball bearing pre-tightening apparatus | |
| CN205117988U (en) | Zanjon ball and tapered roller combination bearing | |
| CN101793290B (en) | Combined bearing of radial roller and axially thrust conical roller | |
| CN221063988U (en) | But eccentric radial adjustment's backing roll bearing unit | |
| RU2465986C1 (en) | Spindle assembly | |
| CN201269258Y (en) | Flange bearing with threaded hole | |
| CN105090282A (en) | Following-type overrunning clutch with parallel rolls | |
| CN202628804U (en) | High-precision bearing | |
| CN208519058U (en) | A kind of thrust ball and bearing with cross roller ball combination bearing | |
| CN209671411U (en) | Carry the double-row conical novel bearing of axial force | |
| CN209902280U (en) | Main shaft structure for hydraulic tool turret | |
| CN202955121U (en) | Double line thrust pre-tightening self-aligning roller bearing | |
| CN204437058U (en) | Wheel-hub reduction axle hub-bearing unit | |
| CN103625209A (en) | Heavy truck drive axle hub and bearing assembly | |
| CN204755612U (en) | Bearing frame of convenient equipment | |
| CN216199828U (en) | Self-aligning roller bearing with seat | |
| CN101338787A (en) | Radial retainer, thrust bearing using same and vertical shaft series | |
| CN216997210U (en) | Pulley component | |
| CN101469743A (en) | Dual-column adjustable circular cone roller main bearing | |
| CN201301900Y (en) | Axial and radial combination bearing with high precision and high rigidity | |
| CN203308892U (en) | Multi-pulley assembly | |
| CN204387100U (en) | Easy installation rolling bearing | |
| CN2643067Y (en) | High-speed thrust combination bearing with preload |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20190911 |