CN201592369U - Nut rotary long lead screw driving mechanism - Google Patents
Nut rotary long lead screw driving mechanism Download PDFInfo
- Publication number
- CN201592369U CN201592369U CN2009202876876U CN200920287687U CN201592369U CN 201592369 U CN201592369 U CN 201592369U CN 2009202876876 U CN2009202876876 U CN 2009202876876U CN 200920287687 U CN200920287687 U CN 200920287687U CN 201592369 U CN201592369 U CN 201592369U
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- screw
- lead screw
- long lead
- bearing
- driving mechanism
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Abstract
The utility model discloses a driving mechanism, and particularly relates to a nut rotary long lead screw driving mechanism. The nut rotary long lead screw driving mechanism comprises a long lead screw and a screw; two ends of the long lead screw are fixedly supported on a support; the screw matched with the long lead screw is connected with a rotary driving mechanism; a fixed sleeve connected with a connecting plate is arranged on the outer side of the screw; a bearing is arranged between the fixed sleeve and the screw; and the rotary driving mechanism is arranged on a base connected with the fixed sleeve or the connecting plate. When the lead screw does not rotate during operation, a power device drives the screw to rotate, and the screw moves relative to the lead screw so as to achieve the purpose that the screw drives other components to move, thereby avoiding the problem of great deflection caused by the rotation of the long ball screw and avoiding adverse factors such as the limitation of critical speed of rotating the ball screw. Therefore, when the lead screw is longer in length and the moving speed of the lead screw is higher, the phenomenon of vibration also can not occur to achieve stable operation, and any influence to other components is not generated to improve the operating precision of the equipment.
Description
Technical field
The utility model relates to a kind of driving mechanism, particularly a kind of driving mechanism for nut rotary type long lead screw.
Background technology
The screw that utilizes leading screw and match with leading screw is widely used in plant equipment as driving mechanism, as the ball screw arrangement in the Metal Cutting Machine Tool, by servomotor as power, drive the ball-screw rotation through synchronizing jugged belt wheel and cog belt, ball-screw is bearing on the lathe bed by bearing, thereby the rotation of ball-screw drives the screw that matches with ball-screw and moves, and the support that joins with screw can drive planker and prolong and vertically move.The leading screw driving mechanism of this structure is applicable to the situation that vertical stroke is short, if vertically stroke is longer, leading screw strong concussion can occur when reaching certain revolution.
With numerically controlled lathe CKA61100M/5000 is example, the vertical stroke 5m of lathe, vertical ball-screw diameter 80mm, footpath 73mm at the bottom of the ball-screw, helical pitch 12mm, ball-screw total length 6m, vertical rapid traverse speed that calculating can reach: the critical speed N=2.71 of ball-screw * 100 * d/ (L * L)=550r/min, vertical fast moving maximal rate v=550 * 12=6.6m/min of planker.Promptly vertical in theory rapid traverse speed is 6.6m, facts have proved that leading screw produced strong concussion when vertical fast moving speed surpassed 4m, its reason is because the length of ball-screw is oversize, leading screw can produce very big centrifugal force when rotating at a high speed, thereby make the leading screw bending produce very big amount of deflection, therefore produce strong concussion, not only influence vertically influences the positioning accuracy of planker fast again.So the leading screw driving mechanism of said structure is not suitable for the long situation of displacement.
Summary of the invention
The purpose of this utility model provides and a kind ofly operates steadily, leading screw does not rotate, do not shake, miscellaneous part is not produced the driving mechanism for nut rotary type long lead screw of any influence, overcomes the deficiencies in the prior art.
Driving mechanism for nut rotary type long lead screw of the present utility model, comprise long lead screw 1 and screw 13, it is characterized in that: the two ends of described long lead screw 1 are fixedly supported on the bearing, the screw 13 that matches with long lead screw 1 connects rotary drive mechanism, be provided with the fixed cover 5 that joins with connecting plate 11 in the outside of screw 13, be provided with bearing 3 between fixed cover 5 and the screw 13, described rotary drive mechanism is located on the pedestal 10 that joins with fixed cover 5 or connecting plate 11.
Driving mechanism for nut rotary type long lead screw of the present utility model, the outside fixed cover of wherein said screw 13 is equipped with screw overcoat 4, described bearing 3 be two groups and be located at screw overcoat 4 and fixed cover 5 between; Between two groups of bearings 3, be provided with the outer separator 17 of spaced bearing outer ring and the inner spacing collar 18 of spaced bearing inner ring; The outside left end of screw overcoat 4 is provided with and is used for the spacing back of the body cap 14 of bearing, and right-hand member is provided with and is used for the spacing step of bearing; Be provided with at the two ends of fixed cover 5 and be used for the spacing end cap of bearing.
Driving mechanism for nut rotary type long lead screw of the present utility model, wherein said rotary drive mechanism structure is: be fixed with motor 12 on the pedestal 1, driving wheel 9 is housed on the output shaft of motor 12, and the driven pulley 6 that matches with driving wheel 9 and the termination of screw overcoat 4 join.
Driving mechanism for nut rotary type long lead screw of the present utility model, the seat structure of wherein said long lead screw 1 left end is: left support abutment 2 is arranged, endoporus place at left support abutment 2 is fixed with support set 22, the left part of long lead screw 1 is inserted in the support set 22 and terminations have been threaded, and end cap 25 is used for axial limiting, is connected with gland 23 at the right-hand member bolt of support set 22 and is used to compress collar 26 between support set 22 and the long lead screw 1; The bearing of long lead screw 1 right-hand member is identical with the left end bearing and be symmetrical arranged.
Driving mechanism for nut rotary type long lead screw of the present utility model compared with prior art, leading screw does not rotate when work, driving screw by power set rotates, thereby screw is moved with respect to leading screw, reach screw and drive the purpose that miscellaneous part moves, avoid long ball-screw to rotate the Large Deflection Problems of bringing, also avoided the unfavorable factors such as restriction of the critical speed of ball-screw rotation.Therefore, when long and translational speed is very fast when leading screw length, reforming phenomena can not occur yet, it is operated steadily, miscellaneous part not produced any influence, improve the running precision of equipment.The rotary speed of screw can reach more than the 1500r/min, has not only obtained bigger axial bearing capacity, and obtains higher self rotating accuracy.
Description of drawings
Fig. 1 is the structural representation of the utility model specific embodiment;
Fig. 2 is a B place enlarged diagram shown in Figure 1;
Fig. 3 is an A place enlarged diagram shown in Figure 1.
The specific embodiment
As shown in Figure 1, 2: 1 is leading screw, can be the leading screw of ball-screw or other structures.13 is the screw that matches with leading screw 1.
As shown in Figure 3: the left end at leading screw 1 passes through left support abutment 2 fixed supports, concrete structure is: bolting has support set 22 at the endoporus place of left support abutment 2, the left part of long lead screw 1 is inserted into the outer and termination of the support set 22 endoporus end cap 25 that has been threaded and is used for axial limiting, and promptly two nuts are carried on the back mutually and fastened.Be connected with gland 23 at the right-hand member bolt of support set 22 and be used to compress collar 26 between support set 22 and the long lead screw 1.The supporting construction of the right support abutment 7 of long lead screw 1 right-hand member and the left support abutment 2 of left end is identical and be symmetrical arranged.
As shown in Figure 1, 2: be fixedly connected with screw overcoat 4 in the outside of screw 13, fixed cover 5 arranged, two groups of bearings 3 are housed between fixed cover 5 and the screw overcoat 4 in the outside of screw overcoat 4.On screw overcoat 4 between two groups of bearings 3, be set with the inner spacing collar 18 of spaced bearing inner ring and the outer separator 17 of spaced bearing outer ring.Be set with stop collar 15 and the back of the body cap 14 that has been threaded is used for bearing inner race is carried out axial location at the left end of screw overcoat 4.Being fixedly connected with left end cap 16 at the left end screw of fixed cover 5 is used for the bearing outer ring axial location.Be fixedly connected with right end cap 19 at the right-hand member screw of screw overcoat 4 and be used for axial limiting bearing outer ring.There is step to be used for axial limiting at the right-hand member of screw overcoat 4 to bearing inner race.
Fixed cover 5 bolting are connected with connecting plate 11.10 for installing the pedestal of motor 12, and pedestal 12 is fixedlyed connected with connecting plate 11 or fixed cover 5.
The course of work is: motor 12 is driven by electric control gear and drives driving wheel 9, cog belt 8, driven pulley 6 rotations, thereby drive screw overcoat 4 and screw 13 rotations, screw 13 is moved axially with respect to leading screw 1, move through bearing 3 and the fixed cover 5 of screw 13 have driven connecting plate 11, pedestal 10, motor 12, driving wheel 9 and driven pulley 6 and have moved together, and connecting plate 11 can drive and need move along leading screw 1 axially movable miscellaneous part.
Claims (4)
1. driving mechanism for nut rotary type long lead screw, comprise long lead screw (1) and screw (13), it is characterized in that: the two ends of described long lead screw (1) are fixedly supported on the bearing, the screw (13) that matches with long lead screw (1) connects rotary drive mechanism, be provided with the fixed cover (5) that joins with connecting plate (11) in the outside of screw (13), be provided with bearing (3) between fixed cover (5) and the screw (13), described rotary drive mechanism is located on the pedestal (10) that joins with fixed cover (5) or connecting plate (11).
2. driving mechanism for nut rotary type long lead screw according to claim 1 is characterized in that: the outside fixed cover of described screw (13) is equipped with screw overcoat (4), described bearing (3) be two groups and be located at screw overcoat (4) and fixed cover (5) between; Between two groups of bearings (3), be provided with the outer separator (17) of spaced bearing outer ring and the inner spacing collar (18) of spaced bearing inner ring; The outside left end of screw overcoat (4) is provided with and is used for the spacing back of the body cap (14) of bearing, and right-hand member is provided with and is used for the spacing step of bearing; Be provided with at the two ends of fixed cover (5) and be used for the spacing end cap of bearing.
3. driving mechanism for nut rotary type long lead screw according to claim 2, it is characterized in that: described rotary drive mechanism structure is: be fixed with motor (12) on the pedestal (1), driving wheel (9) is housed on the output shaft of motor (12), and the driven pulley (6) that matches with driving wheel (9) and the termination of screw overcoat (4) join.
4. driving mechanism for nut rotary type long lead screw according to claim 3, it is characterized in that: the seat structure of described long lead screw (1) left end is: left support abutment (2) is arranged, be fixed with support set (22) at the endoporus place of left support abutment (2), the left part of long lead screw (1) is inserted in the support set (22) and the termination has been threaded, and end cap (25) is used for axial limiting, is connected with gland (23) at the right-hand member bolt of support set (22) and is used to compress collar (26) between support set (22) and the long lead screw (1); The bearing of long lead screw (1) right-hand member is identical with the left end bearing and be symmetrical arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202876876U CN201592369U (en) | 2009-12-15 | 2009-12-15 | Nut rotary long lead screw driving mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202876876U CN201592369U (en) | 2009-12-15 | 2009-12-15 | Nut rotary long lead screw driving mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201592369U true CN201592369U (en) | 2010-09-29 |
Family
ID=42774432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202876876U Expired - Fee Related CN201592369U (en) | 2009-12-15 | 2009-12-15 | Nut rotary long lead screw driving mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201592369U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101722436A (en) * | 2009-12-15 | 2010-06-09 | 大连机床集团有限责任公司 | Driving mechanism for nut rotary type long lead screw |
| CN103465088A (en) * | 2013-08-30 | 2013-12-25 | 无锡机床股份有限公司 | Linear feed structure of machine tool |
-
2009
- 2009-12-15 CN CN2009202876876U patent/CN201592369U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101722436A (en) * | 2009-12-15 | 2010-06-09 | 大连机床集团有限责任公司 | Driving mechanism for nut rotary type long lead screw |
| CN103465088A (en) * | 2013-08-30 | 2013-12-25 | 无锡机床股份有限公司 | Linear feed structure of machine tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DALIAN MACHINE TOOL (CNC) CO., LTD. Free format text: FORMER OWNER: DALIAN MACHINE-TOOL GROUP CO LTD Effective date: 20110919 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110919 Address after: 116000, No. 100, Liaohe East Road, Shuang D port, Liaoning, Dalian Patentee after: Dalian Machine Tool (Digital) Co., Ltd. Address before: 116000, No. 100, Liaohe East Road, Shuang D port, Liaoning, Dalian Patentee before: Dalian Machine-Tool Group Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100929 Termination date: 20121215 |