CN201144920Y - Heavy type machine tool hydraulic unloading device - Google Patents
Heavy type machine tool hydraulic unloading device Download PDFInfo
- Publication number
- CN201144920Y CN201144920Y CNU2007200995104U CN200720099510U CN201144920Y CN 201144920 Y CN201144920 Y CN 201144920Y CN U2007200995104 U CNU2007200995104 U CN U2007200995104U CN 200720099510 U CN200720099510 U CN 200720099510U CN 201144920 Y CN201144920 Y CN 201144920Y
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- CN
- China
- Prior art keywords
- cylinder body
- machine tool
- hydraulic
- outloading
- moving part
- 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
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Abstract
The utility model relates to a hydraulic outloading device of a heavy machine tool. The hydraulic outloading device comprises a hydraulic oil cylinder body; an oil cylinder cover is arranged on the upper end of the cylinder body; an oil cavity between the oil cylinder cover and a piston inside the cylinder body is communicated with an oil hole; a square hole of the lower part of the cylinder body is provided with a linear slide block inside; a pressure spring is arranged between the linear slide block and the cylinder body; the lower part of the linear slide block is provided with a plurality of rollers; and the hydraulic outloading device also comprises an outloading lead rail. The hydraulic outloading device has the advantages that: the hydraulic outloading device loads 50 to 70 percent of the machine tool moving part weight; the sliding lead rail loads 30 to 50 percent of the machine tool moving part weight; the 50 to 70 percent of the moving part weight is changed from sliding friction to rolling friction; the frictional force of the moving part is reduced in order that the moving part can achieve the good movement states in the startup and the low-speed movement and improve the movement accuracy of the moving part.
Description
Technical field
The utility model belongs to the Machining Technology field, particularly relates to the heavy machine tool hydraulic pressure relief arrangement of a kind of reasonable in design, raising machine tool motion precision.
Background technique
Along with the development of equipment manufacture, the consumption maximum of lathe, milling machine and boring machine in the machining also is that necessary equipment is processed in metal cutting.And during processing large-tonnage workpiece, then need to finish by heavy machine tool, parts moving linearly is carrying large-tonnage workpiece on the existing heavy machine tool, its tonnage is corresponding configuration bigger also, and the guide rail of heavy machine tool is in order to obtain good lathe rigidity, the general sliding type guide rail structure that adopts, when the lathe moving member is worked, because the startup inertia of heavy machine tool is very big, and force of sliding friction is also very big, makes moving member start difficulty, causes when low-speed motion, moving member is easy to produce creeping phenomenon, and then the kinematic accuracy of lathe is affected.
Summary of the invention
The utility model is for solving the heavy machine tool hydraulic pressure relief arrangement that the technical problem that exists in the known technology provides a kind of reasonable in design, improves the machine tool motion precision.
The technological scheme that the utility model is taked for the technical problem that exists in the solution known technology is: heavy machine tool hydraulic pressure relief arrangement, it is characterized in that: comprise the hydraulic jack cylinder body, in the cylinder body upper end oil cylinder cover is housed, oil pocket between oil cylinder cover and the cylinder body inner carrier is connected with oilhole, in the square hole below cylinder body linear slider is installed, be provided with pressure spring between linear slider and the cylinder body, several rollers are installed below linear slider, this hydraulic pressure relief arrangement also includes unloaded slideway.
The utility model can also adopt following technological scheme:
The last plane of described linear slider fits tightly with the piston lower plane and contacts.
Also be shaped on air hole on the described hydraulic jack cylinder body.
Advantage and the good effect that the utlity model has are: because the utility model adopts technique scheme, hydraulic jack is whole fixing below the lathe moving member, unloaded slideway is installed on the bed piece, piston is under the pressure oil effect, its upper end is subjected to a downward active force, piston is given linear slider with this force transmission, when moving member moves, roller on the linear slider is made rolling motion on unloaded slideway, at this moment, the 50%-70% of hydraulic pressure relief arrangement carrying lathe moving member weight, and the 30%-50% of slide guide carrying lathe moving member weight, and transfer the 50%-70% of the weight of moving member to rolling friction by sliding friction.Because in fastness, coefficient of rolling friction will be far smaller than the coefficient of sliding friction, can reduce the frictional force of moving member, makes moving member obtain good motion state when starting and during low-speed motion, improves the moving member kinematic accuracy.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the worm's eye view of Fig. 1;
Fig. 3 is a perspective view of the present utility model.
Among the figure: 1, oil cylinder cover; 2, cylinder block; 3, piston; 4, pressure spring; 5, linear slider; 6, unloaded slideway; 7, roller; 8, oilhole; 9, oil pocket.
Embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1-Fig. 3, heavy machine tool hydraulic pressure relief arrangement, comprise hydraulic jack cylinder body 2, in cylinder block 2 upper ends oil cylinder cover 1 is housed, oil pocket 9 between oil cylinder cover and the cylinder block piston 3 is connected with oilhole 8, linear slider 5 is installed in the square hole below cylinder block, and the last plane of described linear slider fits tightly with the lower plane of piston 3 and contacts.Be provided with four pressure springs 4 between linear slider and the cylinder block, two groups of several rollers 7 are installed below linear slider 5 side by side.This hydraulic pressure relief arrangement also includes a unloaded slideway 6, and hydraulic jack is whole to fixedly mount below the lathe moving member, and unloaded slideway is installed on the bed piece, also is shaped on air hole on the hydraulic jack cylinder body.
Working principle of the present utility model is:
Hydraulic jack is whole fixing below the lathe moving member, unloaded slideway is installed on the bed piece, hydraulic system is to hydraulic pressure relief arrangement fuel feeding, piston is under the pressure oil effect, its upper end is subjected to a downward active force, piston is given linear slider with this force transmission, when moving member moves, roller on the linear slider is made rolling motion on unloaded slideway, at this moment, the 50%-70% of hydraulic pressure relief arrangement carrying lathe moving member weight, and the 30%-50% of slide guide carrying lathe moving member weight, and transfer the 50%-70% of the weight of moving member to rolling friction by sliding friction.
When moving member stops when mobile, hydraulic system stops to hydraulic pressure relief arrangement fuel feeding, and at this moment, the weight of moving member all acts on the lathe slide guide, moving member is stabilized in stop motionless.In order to guarantee hydraulic pressure relief arrangement when work, the kinematic accuracy of its moving member does not reduce, and the off-load power of hydraulic pressure relief arrangement should can not guarantee that like this moving member contacts with the lathe slide guide all the time greater than the 50%-70% of moving member weight.The big I of off-load power of this hydraulic pressure relief arrangement is adjusted by the pressure of adjusting hydraulic system.
This hydraulic pressure relief arrangement be installed in the lathe moving member below, and with its even distribution, thereby guarantee that off-load power rationally distributes.
Claims (3)
1. heavy machine tool hydraulic pressure relief arrangement, it is characterized in that: comprise the hydraulic jack cylinder body, in the cylinder body upper end oil cylinder cover is housed, oil pocket between oil cylinder cover and the cylinder body inner carrier is connected with oilhole, in the square hole below cylinder body linear slider is installed, be provided with pressure spring between linear slider and the cylinder body, several rollers are installed below linear slider, this hydraulic pressure relief arrangement also includes unloaded slideway.
2. heavy machine tool hydraulic pressure relief arrangement according to claim 1 is characterized in that: the last plane of described linear slider fits tightly with the piston lower plane and contacts.
3. heavy machine tool hydraulic pressure relief arrangement according to claim 1 is characterized in that: also be shaped on air hole on the described hydraulic jack cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200995104U CN201144920Y (en) | 2007-12-28 | 2007-12-28 | Heavy type machine tool hydraulic unloading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200995104U CN201144920Y (en) | 2007-12-28 | 2007-12-28 | Heavy type machine tool hydraulic unloading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201144920Y true CN201144920Y (en) | 2008-11-05 |
Family
ID=40081797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200995104U Expired - Fee Related CN201144920Y (en) | 2007-12-28 | 2007-12-28 | Heavy type machine tool hydraulic unloading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201144920Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103029002A (en) * | 2012-12-27 | 2013-04-10 | 威海华东重工有限公司 | Hydraulic rolling combined guide rail unloading device |
| CN103104572A (en) * | 2012-12-11 | 2013-05-15 | 江苏锐成机械有限公司 | Collision-proof hydraulic cylinder for high-speed machine tool |
| CN107932093A (en) * | 2018-01-10 | 2018-04-20 | 张勇 | A kind of machine tool slide guide rail unloading devices |
-
2007
- 2007-12-28 CN CNU2007200995104U patent/CN201144920Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104572A (en) * | 2012-12-11 | 2013-05-15 | 江苏锐成机械有限公司 | Collision-proof hydraulic cylinder for high-speed machine tool |
| CN103029002A (en) * | 2012-12-27 | 2013-04-10 | 威海华东重工有限公司 | Hydraulic rolling combined guide rail unloading device |
| CN107932093A (en) * | 2018-01-10 | 2018-04-20 | 张勇 | A kind of machine tool slide guide rail unloading devices |
| CN107932093B (en) * | 2018-01-10 | 2019-06-04 | 义乌市义正自动化设备有限公司 | A kind of machine tool slide guide rail unloading devices |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: TIANJIN JINGCHENG MACHINE CO., LTD. Free format text: FORMER NAME: JINGCHENG MACHINE TOOLS MFG. CO., LTD., TIANJIN CITY |
|
| CP03 | Change of name, title or address |
Address after: 300300 Tianjin City, Dongli Economic Development Zone, Lai Sun Road No. 10 Patentee after: Tianjin Jingcheng Machine Tool Co., Ltd. Address before: 300300 Tianjin City, Dongli Development Zone, Lai Sun Road No. 10 Patentee before: Jingcheng Machine Tools Mfg. Co., Ltd., Tianjin City |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081105 Termination date: 20121228 |