CN101758391A - Structure of bracket for long lead screw - Google Patents
Structure of bracket for long lead screw Download PDFInfo
- Publication number
- CN101758391A CN101758391A CN 201010121479 CN201010121479A CN101758391A CN 101758391 A CN101758391 A CN 101758391A CN 201010121479 CN201010121479 CN 201010121479 CN 201010121479 A CN201010121479 A CN 201010121479A CN 101758391 A CN101758391 A CN 101758391A
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- China
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- cylinder
- guide rail
- lead screw
- bracket
- piston rod
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Abstract
The invention relates to the structure of a bracket for a long lead screw. The invention is characterized in that a first cylinder end cover, a cylinder body and a second cylinder end cover are in fastening connection via screws, to form a cylinder body in which a piston rod is arranged; a transmitting cover is mounted at the top end of the piston rod, and the lower end thereof is connected with a guide rail via nuts; a first oil pipe joint is mounted on the first cylinder end cover, and the entire cylinder is located and mounted on a cylinder base via the steps on the second cylinder end cover; the cylinder base and a guide seat for the guide rail are in fastening connection to a cross beam via screws; the bracket is mounted on the guide rail via screws; a roller shaft is mounted in the through-hole of the bracket; and a roller is mounted on the roller shaft. The invention capable of providing continuous supporting force for a long-stroke lead screw has the advantages of simple, compact and reasonable structure, convenient installation and operation and obvious application effect, resists the bending deformation caused by the gravity of the long-stroke lead screw, guarantees the transmission accuracy of the long-stroke lead screw, and extends the applicable range of lead screws having various strokes.
Description
Technical field
The present invention relates to a kind of structure of bracket for long lead screw, especially be applicable in the large-sized numerical control equipment that need to use long stroke screw mandrel when providing supporting force and use, belong to the frame for movement technical field for long stroke screw mandrel.
Background technology
High speed development along with China's mechanical industry, especially the manufacturing develop rapidlys of Large-Scale Equipment such as Aeronautics and Astronautics, boats and ships, wind-powered electricity generation, metallurgy, the large-duty requirement of intensity, precision and part to large-sized structural parts is also more and more higher, thereby also just bigger to demand large-scale, efficient numerically controlled machining center.And Large Machining Center when guaranteeing original machining accuracy, also needs to strengthen its processing stroke as the primary selection of heavy parts processing.
In the transmission of Large Machining Center, utilization is screw mandrel or tooth bar transmission the most widely, and tooth bar can be finished the transmission of longer stroke by splicing, but eliminate drive gap, improve be difficult to aspect the transmission accuracy always satisfactory; Though and the lead screw transmission drive gap is more easy to control, transmission accuracy is higher, but can only provide supporting force by the installation supporting seat at screw mandrel two ends when installing owing to leading screw, leading screw is subjected to the effect of self gravitation, certainly lead to flexural deformation, influence transmission accuracy, so the screw mandrel transmission is generally used when moving stroke than short pass.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, thereby provide a kind of structure of bracket for long lead screw, it provides supporting by the stage casing at long stroke leading screw, overcome leading screw and produce flexural deformation because of the self gravitation effect, thereby influence the shortcoming of transmission accuracy, make full use of the characteristics that the screw mandrel drive gap is little, transmission accuracy is high, guaranteed transmission accuracy.
According to technical scheme provided by the invention, a kind of structure of bracket for long lead screw, comprise the lid of posting a letter, first cylinder cover, first oil connection, cylinder body, piston rod, second cylinder cover, second oil connection, oil cylinder seat, guide rail, nut, carriage, roller, roller shaft, crossbeam and guide rail guide holder, described first cylinder cover, cylinder body and cylinder cover are fastenedly connected by screw, form cylinder block, piston rod is arranged in the cylinder body, separates cylinder cavity and forms upper and lower cavity; The lid of posting a letter is installed in the piston rod top, and piston-rod lower end is connected with guide rail by nut; First oil connection is installed on first cylinder cover, and oil cylinder integral body is fastenedly connected on oil cylinder seat and by screw by the step location and installation on second cylinder cover; Oil cylinder seat and guide rail guide holder are fastenedly connected on crossbeam with screw respectively; Carriage is installed on the guide rail by screw, and roller shaft is installed in the carriage through hole, and roller is arranged and is installed on the roller shaft.
Described guide rail is divided into rail sections and support coupling part, and its support coupling part is connected with piston rod, and described rail sections cooperates with the guide rail guide holder, lifting and putting down guiding is provided for carriage.Described second oil connection is installed on second cylinder cover, is communicated with the upper and lower cavity of oil cylinder respectively.
Compared with the prior art the present invention has the following advantages:
The present invention is installed the oil cylinder carrier structure additional in the leading screw stage casing, when the machine tool motion component of screw mandrel drive moves to the screw mandrel stage casing, because feed screw nut is connected on the feed screw nut mount pad of machine tool motion component, its center line and screw mandrel are installed the supporting seat centerline on same straight line, thereby provide supporting force in the leading screw stage casing; And this moment, oil cylinder carriage and screw mandrel were in disengaged position.When moving component moved to away from the screw mandrel stage casing, the oil cylinder carriage lifted, and is in fit-state with screw mandrel, thereby possesses supporting force in the leading screw stage casing all the time, avoided producing flexural deformation behind the leading screw gravitate.The present invention is simple, compact and reasonable for structure; Can overcome long stroke leading screw gravitate and produce diastrophic situation for long stroke leading screw provides lasting supporting force, guaranteed the transmission accuracy of long stroke leading screw, enlarged the use stroke range of leading screw; Fitting operation is easy simultaneously, and result of use is obvious.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
Embodiment during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:
As shown in Figure 1: comprising posts a letter covers 1, first cylinder cover 2, first oil connection 3, cylinder body 4, piston rod 5, second cylinder cover 6, second oil connection 7, oil cylinder seat 8, guide rail 9, nut 10, carriage 11, roller 12, roller shaft 13, crossbeam 14 and guide rail guide holder 15.
The present invention is fastened together first cylinder cover 2, cylinder body 4, second cylinder cover 6 by screw, form cylinder block, and piston rod 5 is arranged in the cylinder body, separates cylinder cavity and forms upper and lower cavity; Post a letter and cover 1 and be installed in piston rod 5 tops, piston rod 5 lower ends are connected with guide rail 9 support coupling parts by nut 10; First oil connection 3 is installed on first cylinder cover 2, and second oil connection 7 is installed on second cylinder cover 6, be communicated with the upper and lower cavity of oil cylinder respectively, oil cylinder integral body is fastenedly connected on oil cylinder seat 8 and by screw by the step location and installation on second cylinder cover 6; Oil cylinder seat 8 is fastenedly connected on crossbeam 14 with screw respectively with guide rail guide holder 15; Guide rail 9 is divided into rail sections and support coupling part, and its support coupling part is connected with piston rod 5, and 15 assemblings of rail sections and guide rail guide holder, lifting and putting down guiding is provided for carriage 11; Carriage 11 is installed on the guide rail 9 by screw, and roller shaft 13 is installed in carriage 11 and opens in the hole, and roller 12 is arranged on the roller shaft 13 as the contact element with leading screw.
The long stroke screw mandrel of the present invention carrier structure by nonsynchronous oil-feed and the off-load to the oil cylinder upper and lower cavity, promotes piston rod 5 and moves up or down in use.When needs provide supporting force for leading screw, the off-load of oil cylinder cavity of resorption oil-feed epicoele, guide rail 9 drives carriage 11 and moves upward, and the roller 12 on the carriage 11 is contacted, for screw mandrel provides support with leading screw.When machine tool motion component moves to the screw mandrel stage casing, in the time of need unclamping carriage, the off-load of oil cylinder epicoele oil-feed cavity of resorption, guide rail 9 drives carriages 11 and moves downward, and makes carriage 11 away from leading screw, makes moving component to pass through safely.
This shows,, can be screw mandrel reliable support is provided, make screw mandrel can not guarantee the transmission accuracy of screw mandrel, also guaranteed the machining accuracy of lathe because of the gravity effect produces moderate finite deformation by the use of long stroke screw mandrel carrier structure of the present invention.
Claims (4)
1. structure of bracket for long lead screw, comprise crossbeam (14), it is characterized in that: first cylinder cover (2), cylinder body (4) are fastenedly connected by screw with second cylinder cover (6), form cylinder block, piston rod (5) is arranged in the cylinder body, separates cylinder cavity and forms upper and lower cavity; The lid (1) of posting a letter is installed in piston rod (5) top, and piston rod (5) lower end is connected with guide rail (9) by nut (10); Oil cylinder is whole to be gone up and is fastenedly connected by screw at oil cylinder seat (8) by the step location and installation on second cylinder cover (6); Oil cylinder seat (8) is fastenedly connected on crossbeam (14) with screw respectively with guide rail guide holder (15); Carriage (11) is installed on the guide rail (9) by screw, and roller shaft (13) is installed in carriage (11) through hole, and roller (12) is arranged on the roller shaft (13).
2. a kind of structure of bracket for long lead screw according to claim 1 is characterized in that described guide rail (9) is divided into rail sections and support coupling part, and its support coupling part is connected with piston rod (5), and described rail sections cooperates with guide rail guide holder (15).
3. a kind of structure of bracket for long lead screw according to claim 1 is characterized in that upward installation first oil connection (3) of described first cylinder cover (2).
4. a kind of structure of bracket for long lead screw according to claim 1 is characterized in that upward installation second oil connection (7) of described second cylinder cover (6), is communicated with the upper and lower cavity of oil cylinder respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010121479 CN101758391A (en) | 2010-03-10 | 2010-03-10 | Structure of bracket for long lead screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010121479 CN101758391A (en) | 2010-03-10 | 2010-03-10 | Structure of bracket for long lead screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101758391A true CN101758391A (en) | 2010-06-30 |
Family
ID=42489859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010121479 Pending CN101758391A (en) | 2010-03-10 | 2010-03-10 | Structure of bracket for long lead screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101758391A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103495874A (en) * | 2013-09-27 | 2014-01-08 | 苏州凯欧机械科技有限公司 | Screw rod device of anti-lock precision workbench |
| CN104308629A (en) * | 2014-10-10 | 2015-01-28 | 荣成锻压机床有限公司 | Deflection deformation preventing device for turning ball screws by horizontal machine tool |
| CN104308629B (en) * | 2014-10-10 | 2017-01-04 | 荣成锻压机床有限公司 | Horizontal type cart wheeled litter ball-screw anti-deflection deformation device |
| CN106975938A (en) * | 2017-05-24 | 2017-07-25 | 沈机集团昆明机床股份有限公司 | Without impact ballscrew auxiliary supporting device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101324264A (en) * | 2008-06-11 | 2008-12-17 | 杭州机床集团有限公司 | Long lead screw hydraulic type flexible supporting device |
| CN101462233A (en) * | 2007-12-21 | 2009-06-24 | 威海华东数控股份有限公司 | Machine tool horizontal lead screw oil lift device |
-
2010
- 2010-03-10 CN CN 201010121479 patent/CN101758391A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101462233A (en) * | 2007-12-21 | 2009-06-24 | 威海华东数控股份有限公司 | Machine tool horizontal lead screw oil lift device |
| CN101324264A (en) * | 2008-06-11 | 2008-12-17 | 杭州机床集团有限公司 | Long lead screw hydraulic type flexible supporting device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103495874A (en) * | 2013-09-27 | 2014-01-08 | 苏州凯欧机械科技有限公司 | Screw rod device of anti-lock precision workbench |
| CN104308629A (en) * | 2014-10-10 | 2015-01-28 | 荣成锻压机床有限公司 | Deflection deformation preventing device for turning ball screws by horizontal machine tool |
| CN104308629B (en) * | 2014-10-10 | 2017-01-04 | 荣成锻压机床有限公司 | Horizontal type cart wheeled litter ball-screw anti-deflection deformation device |
| CN106975938A (en) * | 2017-05-24 | 2017-07-25 | 沈机集团昆明机床股份有限公司 | Without impact ballscrew auxiliary supporting device |
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| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100630 |