CN205660454U - Lathe tail end formula lead screw pre -stretching structure of can moving about - Google Patents
Lathe tail end formula lead screw pre -stretching structure of can moving about Download PDFInfo
- Publication number
- CN205660454U CN205660454U CN201620553601.XU CN201620553601U CN205660454U CN 205660454 U CN205660454 U CN 205660454U CN 201620553601 U CN201620553601 U CN 201620553601U CN 205660454 U CN205660454 U CN 205660454U
- Authority
- CN
- China
- Prior art keywords
- end bearing
- tail end
- group
- bearing block
- screw mandrel
- 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.)
- Active
Links
Landscapes
- Support Of The Bearing (AREA)
Abstract
The utility model relates to a lathe tail end formula lead screw pre -stretching structure of can moving about belongs to machine tool drive technical field, including the lead screw, the both ends of lead screw are provided with front end bearing frame subassembly and tail end bearing frame subassembly, and front end bearing frame subassembly includes the preceding end bearing group in the fixed rachis bearing in the front of front end bearing frame and installation, in preceding end bearing is organized and is compressed tightly in the front the rachis bearing through front end gland and front end lock nut, tail end bearing frame subassembly includes that tail end bearing frame and installation fix the tail end bearing group in the tail end bearing frame, and the lead screw tail end passes dish spring group no. 1, spacer no. 1, tail end bearing group, spacer no. 2 and dish spring group no. 2 from inside to outside in proper order, and two opposite sides in the dish spring group compress tightly through rear end lock nut. The utility model discloses can provide high accuracy and high stability for the transmission system of lathe, the bearing has all adopted DB arrangement, and every group is all fastened at the bearing both ends, has improved the transmission rigidity of lead screw and has satisfied two -way axial load's maximize.
Description
Technical field
This utility model belongs to machine tool drive technical field, and being specifically related to a kind of lathe tail end can swimming type screw mandrel prestretched
Structure.
Background technology
Digit Control Machine Tool is the manufacturing main gold cutting tool of modern high accuracy at present, the essence of the structure influence lathe of lathe
Degree.The precision of lathe is played an important role by the transmission accuracy of screw mandrel, is directly connected to the machining accuracy of lathe, so lathe
Drive mechanism, the precision of bearing, the thermal deformation of screw mandrel directly affects the machining accuracy of lathe, therefore, screw mandrel and the peace of bearing
Assembling structure and mode are the most extremely important.
At present the screw mandrel of major part Digit Control Machine Tool all use the method for prestretched to offset the thermal stretching of screw mandrel, but due to
Working environment and the reason of the attribute of leading screw own, it will the thermal expansion length situation more than prestretching amount of leading screw occur, this will be directly
Cause prestretched inefficacy, tail end bearing pre-tightened to be lost efficacy, drive system rigidity declines, or the screw mandrel shaft shoulder produces with tail end bearing inner race
Stress contact causes screw mandrel bending, the problem such as bearing heating burns out, steel ball de-orbits, and will have a strong impact on the precision of lathe, steady
Qualitative and transmission rigidity.
Utility model content
The purpose of this utility model is to provide one and can automatically compensate screw mandrel thermal stretching and be effectively improved machine tool accuracy, steady
Qualitative and transmission rigidity lathe tail end can swimming type screw mandrel prestretched structure.
This utility model lathe tail end can swimming type screw mandrel prestretched structure, including screw mandrel, before the two ends of screw mandrel are provided with
End bearing block assembly and tail end bearing block assembly, described front end bearing block assembly includes front end bearing block and is fixed on front end
Front end bearing group in bearing block, front end bearing group is pressed in front end bearing block by front end gland and front end locking nut；
Described tail end bearing block assembly includes tail end bearing block and the tail end bearing group being fixed in tail end bearing block, described screw mandrel
Tail end sequentially passes through disc spring group one, spacer one, tail end bearing group, spacer two and disc spring group two from inside to outside, and tail end bearing group is led to
Later, in side pressure lid is pressed on tail end bearing block, described disc spring group two opposite side is compressed by rear end locking nut.
Described front end bearing group is arranged in DB mode by no less than two groups of bearings, and the outer ring end face of front end bearing group is with front
End bearing block interior step face contacts, and other end is compressed by front end gland, the inner ring end face of front end bearing group and front end axle
Shoulder grafting touches, and other end contacts with spacer three, and spacer three opposite side is compressed by front end locking nut, by tightening front end locking screw
Front end bearing group pretension is eliminated gap by mother, and bearing all have employed DB arrangement mode, and often group bearing two ends are all fastened, and carry
The transmission rigidity of high screw mandrel and meet the maximization of bi-directional axial load.
Described tail end bearing group is arranged in DB mode by no less than two groups of bearings, the outer ring end face of tail end bearing group and tail
End bearing block interior step face contacts, and other end is compressed by rear end gland, the inner ring end face of tail end bearing group and spacer one
Contact, other end contacts with spacer two, and described disc spring group one contacts with the rear end shaft shoulder, adjusts disc spring group one by spacer one
Highly realize the adjustment to tail end bearing group pretightning force, and realize disc spring group two height by tightening rear end locking nut
Adjustment, thus the adjustment to screw mandrel pretension, and bearing all have employed DB arrangement mode, often group bearing two ends are all by tightly
Gu, improve the transmission rigidity of screw mandrel and meet the maximization of bi-directional axial load.
Described front end gland is arranged on front end bearing block end face by screw, is arranged and fixed conveniently.
Described rear end gland is arranged on tail end bearing block end face by screw, is arranged and fixed conveniently.
The height of disc spring group one is higher than the height of disc spring group two.
Compared with prior art, the utility model has the advantage of:
1, transmission accuracy is high: screw mandrel can be made to be constantly in the state of prestretching, make tail end bearing be constantly in Pre strained state,
And can automatically compensate the thermal stretching of screw mandrel by disc spring structure, the drive system for lathe provides high accuracy and high stability；
2, transmission rigidity and to bear load big: bearing all have employed DB arrangement mode, and often group bearing two ends are all fastened, and carry
The transmission rigidity of high screw mandrel and meet the maximization of bi-directional axial load；
3, easy for installation, easy to maintenance, applied widely, highly versatile.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of this utility model front end bearing block assembly；
Fig. 3 is the structural representation of this utility model tail end bearing block assembly；
In figure: 1, screw mandrel, 2, front end bearing block assembly, 3, tail end bearing block assembly, 4, front end bearing block, 5, front end bearing
Group, 6, spacer three, 7, front end locking nut, 8, front end gland, 9, screw, 10, tail end bearing block, 11, disc spring group one, 12, every
Set one, 13, tail end bearing group, 14, disc spring group two, 15, rear end locking nut, 16, rear end gland, 17, spacer two.
Detailed description of the invention
Below against accompanying drawing, detailed description of the invention of the present utility model is described in further detail.
Lathe tail end as shown in Figure 1, Figure 2 and Figure 3 can swimming type screw mandrel prestretched structure, including screw mandrel 1, screw mandrel 1
Two ends are provided with front end bearing block assembly 2 and tail end bearing block assembly 3, and front end bearing block assembly 2 includes front end bearing block 4 and peace
Dress is fixed on the front end bearing group 5 in front end bearing block 4, and front end bearing group 5 is pressed by front end gland 8 and front end locking nut 7
Tight in front end bearing block 4；Tail end bearing block assembly 3 includes tail end bearing block 10 and is fixed in tail end bearing block 10
Tail end bearing group 13, screw mandrel 1 tail end sequentially passes through disc spring group 1, spacer 1, tail end bearing group 13, spacer two from inside to outside
17 and disc spring group 2 14, tail end bearing group 13 is pressed in tail end bearing block 10 by rear end gland 16, described disc spring group 2 14
Opposite side is compressed by rear end locking nut 15.
Front end bearing group 5 is arranged in DB mode by no less than two groups of bearings, the outer ring end face of front end bearing group 5 and front end
Bearing block 4 interior step face contacts, and other end is compressed by front end gland 8, the inner ring end face of front end bearing group 5 and front end axle
Shoulder grafting touches, and other end contacts with spacer 36, and spacer 36 opposite side is compressed by front end locking nut 7, locks by tightening front end
Front end bearing group 5 pretension is eliminated gap by jack panel 7, and bearing all have employed DB arrangement mode, often group bearing two ends all by
Fastening, improves the transmission rigidity of screw mandrel and meets the maximization of bi-directional axial load.
Tail end bearing group 13 is arranged in DB mode by no less than two groups of bearings, the outer ring end face of tail end bearing group 13 and tail
End bearing block 10 interior step face contact, other end is compressed by rear end gland 16, the inner ring end face of tail end bearing group 13 with
Spacer 1 contacts, and other end contacts with spacer 2 17, and described disc spring group 1 contacts with the rear end shaft shoulder, by spacer 1
The height adjusting disc spring group 1 realizes the adjustment to tail end bearing group 13 pretightning force, and by tightening rear end locking nut 15
Realize the adjustment to disc spring group 2 14 height, thus the adjustment to screw mandrel pretension, and bearing and all have employed DB arrangement side
Formula, often group bearing two ends are all fastened, and improve the transmission rigidity of screw mandrel and meet the maximization of bi-directional axial load.
Front end gland 8 is arranged on front end bearing block 4 end face by screw 9, is arranged and fixed conveniently.
Rear end gland 16 is arranged on tail end bearing block 10 end face by screw 9, is arranged and fixed conveniently.
The height of disc spring group 1 is higher than the height of disc spring group 2 14.
In sum, this utility model can make screw mandrel be constantly in the state of prestretching, makes tail end bearing be constantly in pre-
Tight state, and the thermal stretching of screw mandrel can be automatically compensated by disc spring structure, the drive system for lathe provides high accuracy and height steady
Qualitative；Bearing all have employed DB arrangement mode, and often group bearing two ends are all fastened, and improves the transmission rigidity of screw mandrel and meets double
To the maximization of axial load；And easy for installation, easy to maintenance, applied widely, highly versatile.
Claims (6)
1. lathe tail end can a swimming type screw mandrel prestretched structure, including screw mandrel (1), the two ends of screw mandrel (1) are provided with front end
Bearing block assembly (2) and tail end bearing block assembly (3), it is characterised in that described front end bearing block assembly (2) includes front end bearing
Seat (4) and the front end bearing group (5) being fixed in front end bearing block (4), front end bearing group (5) passes through front end gland (8)
It is pressed in front end bearing block (4) with front end locking nut (7)；Described tail end bearing block assembly (3) includes tail end bearing block
(10) and the tail end bearing group (13) that is fixed in tail end bearing block (10), described screw mandrel (1) tail end is the most successively
Through disc spring group one (11), spacer one (12), tail end bearing group (13), spacer two (17) and disc spring group two (14), tail end bearing
Group (13) is pressed in tail end bearing block (10) by rear end gland (16), and described disc spring group two (14) opposite side is locked by rear end
Jack panel (15) compresses.
Lathe tail end the most according to claim 1 can swimming type screw mandrel prestretched structure, it is characterised in that described front end axle
Hold group (5) to be arranged in DB mode by no less than two groups of bearings, the outer ring end face of front end bearing group (5) and front end bearing block (4)
Interior step face contacts, and other end is compressed by front end gland (8), the inner ring end face of front end bearing group (5) and the front end shaft shoulder
Contact, other end contacts with spacer three (6), and spacer three (6) opposite side is compressed by front end locking nut (7).
Lathe tail end the most according to claim 1 can swimming type screw mandrel prestretched structure, it is characterised in that described tail end axle
Hold group (13) to be arranged in DB mode by no less than two groups of bearings, the outer ring end face of tail end bearing group (13) and tail end bearing block
(10) interior step face contact, other end by rear end gland (16) compress, the inner ring end face of tail end bearing group (13) with every
Set one (12) contact, other end contacts with spacer two (17), and described disc spring group one (11) contacts with the rear end shaft shoulder.
Lathe tail end the most according to claim 1 and 2 can swimming type screw mandrel prestretched structure, it is characterised in that described front end
Gland (8) is arranged on front end bearing block (4) end face by screw (9).
5. can swimming type screw mandrel prestretched structure according to the lathe tail end described in claim 1 or 3, it is characterised in that described rear end
Gland (16) is arranged on tail end bearing block (10) end face by screw (9).
Lathe tail end the most according to claim 5 can swimming type screw mandrel prestretched structure, it is characterised in that disc spring group one
(11) height is higher than the height of disc spring group two (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620553601.XU CN205660454U (en) | 2016-06-08 | 2016-06-08 | Lathe tail end formula lead screw pre -stretching structure of can moving about |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620553601.XU CN205660454U (en) | 2016-06-08 | 2016-06-08 | Lathe tail end formula lead screw pre -stretching structure of can moving about |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205660454U true CN205660454U (en) | 2016-10-26 |
Family
ID=57156826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620553601.XU Active CN205660454U (en) | 2016-06-08 | 2016-06-08 | Lathe tail end formula lead screw pre -stretching structure of can moving about |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205660454U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109048448A (en) * | 2018-09-10 | 2018-12-21 | 宁波海天精工股份有限公司 | A kind of lead screw support construction |
| CN110666563A (en) * | 2019-09-19 | 2020-01-10 | 贵州宝康智能装备有限公司 | Machining center lead screw mounting structure |
| CN111720510A (en) * | 2020-05-22 | 2020-09-29 | 福建省黑石精密机械有限公司 | High-precision movement shaft of machine tool and working method |
| CN115435057A (en) * | 2022-08-29 | 2022-12-06 | 苏州德扬数控机械有限公司 | Lead screw prestretches structure |
-
2016
- 2016-06-08 CN CN201620553601.XU patent/CN205660454U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109048448A (en) * | 2018-09-10 | 2018-12-21 | 宁波海天精工股份有限公司 | A kind of lead screw support construction |
| CN110666563A (en) * | 2019-09-19 | 2020-01-10 | 贵州宝康智能装备有限公司 | Machining center lead screw mounting structure |
| CN111720510A (en) * | 2020-05-22 | 2020-09-29 | 福建省黑石精密机械有限公司 | High-precision movement shaft of machine tool and working method |
| CN115435057A (en) * | 2022-08-29 | 2022-12-06 | 苏州德扬数控机械有限公司 | Lead screw prestretches structure |
| CN115435057B (en) * | 2022-08-29 | 2023-09-22 | 苏州德扬数控机械有限公司 | Lead screw prestretching structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205660454U (en) | Lathe tail end formula lead screw pre -stretching structure of can moving about | |
| CN106286763B (en) | A kind of harmonic speed reducer and its input drive mechanism | |
| CN102166720B (en) | Structural support of ball screw assembly | |
| CN104607957B (en) | A kind of AB pendulum form strength five-axle linkage milling head | |
| CN203788077U (en) | Novel bearing supporting structure of linear stepping motor | |
| CN105181211A (en) | Detection apparatus of pre-tightening force of angular contact bearing and detection method thereof | |
| CN102410277A (en) | Miniature cylinder | |
| CN205098256U (en) | Novel elastic component structure and steering spindle clearance compensation structure who has this structure | |
| CN202106233U (en) | Ball screw pair supporting structure | |
| CN205380496U (en) | Lead screw pre -stretching structure | |
| CN104973539A (en) | Guide roller set of forklift door rack | |
| CN204082906U (en) | With the linear rolling guide of Cock screw | |
| CN201651169U (en) | Worm and wheel-worm transmission device | |
| CN202053834U (en) | Hub bearing unit | |
| CN205309748U (en) | Tapered roller bearing play is adjusted structure | |
| CN112664642B (en) | Steering engine with multiaxial high overload resistance | |
| CN205869852U (en) | Digital display extrusion intensifying apparatus | |
| CN205600393U (en) | Transmission shaft structure and vertical machining center who has this transmission shaft structure | |
| CN203441969U (en) | Special bearing high-rigidity supporting and towing mechanism for ball screw | |
| CN207661070U (en) | Anti- deformation long-life worm gear reducer | |
| WO2017024646A1 (en) | Bearing structure of main drive gearbox | |
| CN105817939A (en) | Transmission shaft structure and vertical machining center with transmission shaft structure | |
| CN214524043U (en) | Hydraulic circulating ball steering gear assembly with limiting and locking functions | |
| CN201394875Y (en) | Support with hydraulic expansion and rotation function | |
| CN201177012Y (en) | Coupler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180917 Address after: 272100 Shandong Yanzhou Jining Industrial Park Yongan Road North Patentee after: Shandong Tiede Precision Machine Co. Ltd Address before: 272100 Yanzhou Economic Development Zone, Yongan Road North, Jining, Shandong Patentee before: SHANDONG YONGHUA MACHINERY CO., LTD. |
|
| TR01 | Transfer of patent right |