CN103465109A - Compensation device for dead-weight deformation of ram of numerical control floor boring and milling machining center - Google Patents
Compensation device for dead-weight deformation of ram of numerical control floor boring and milling machining center Download PDFInfo
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- CN103465109A CN103465109A CN2013104352363A CN201310435236A CN103465109A CN 103465109 A CN103465109 A CN 103465109A CN 2013104352363 A CN2013104352363 A CN 2013104352363A CN 201310435236 A CN201310435236 A CN 201310435236A CN 103465109 A CN103465109 A CN 103465109A
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Abstract
The invention provides a compensation device for dead-weight deformation of a ram of a numerical control floor boring and milling machining center. The compensation device comprises a ram body of which the rear end is connected with a ram cover plate, and also comprises pull rods and an oil cylinder body, wherein the pull rods are forwards inserted into the ram body along the length direction of the ram body and located at a top position; the front end of each pull rod is fixedly connected with a check block; each check block is matched with a corresponding circular bead in the ram body, and hooked to the corresponding circular bead; the oil cylinder body is fixedly arranged on the ram cover plate of the ram body; a piston capable of moving front and back is arranged in the oil cylinder body; the rear end of each pull rod passes through the ram cover plate and is fixedly connected with the piston. According to the compensation device provided by the invention, by arranging the pull rods in the ram, the pull rods are driven by an oil cylinder at the rear end of the ram to tighten a cantilever of the ram backwards to overcome a gravitational deformation effect, and therefore, the machining precision of the numerical control floor boring and milling machining center is improved. The compensation device provided by the invention is simple in structure, convenient to install and lower in manufacturing cost.
Description
Technical field
The present invention relates to the digital-control boring-milling machine technical field, especially relate to a kind of compensation arrangement of numerical control floor boring-milling center ram deformation induced by gravity.
Background technology
At present, stability and the precision of raising lathe are the developing direction of lathe always.Ram is the vitals of numerical control floor boring-milling center, and its structure and performance will directly affect the overall performance of lathe.And present part is landed boring-milling center ram cantilever and stretched out forward longer dimension, under Action of Gravity Field, ram self produces deformation, and then has influence on the overall precision of lathe.
Summary of the invention
In order to solve the deficiencies in the prior art, the purpose of this invention is to provide a kind of compensation arrangement of numerical control floor boring-milling center ram deformation induced by gravity, to overcome ram because of the deformation of the long generation gravity of cantilever.
In order to achieve the above object, the invention provides a kind of compensation arrangement of numerical control floor boring-milling center ram deformation induced by gravity, comprise that rear end is connected with the ram body of ram cover plate, it is characterized in that, also comprise:
Pull bar, its length direction along described ram body is inserted into forward the inside of described ram body and is positioned at top position, and the front end of described pull bar is fixedly connected with block, and described block coordinates with the shoulder of described ram body interior and is hooked on described shoulder;
Cylinder block, it is installed on the ram cover plate of described ram body, is provided with the piston that can seesaw in described cylinder block, and the rear end of described pull bar is passed described ram cover plate and is fixedly connected with described piston.
Preferably, described cylinder block is fixedly connected on described ram cover plate by screw, between described cylinder block and described ram cover plate, also is provided with sealing gasket.
More preferably, described piston is arranged on cylinder block inside, described piston also is interval with O type circle and reciprocating seal ring along the outer shroud of fore-and-aft direction, and described cylinder block, described piston, described reciprocating seal ring, described O type circle and described sealing gasket form seal cavity; Described cylinder block is provided with the fuel feed hole be connected with described seal cavity, and described fuel feed hole is between described O type circle and described reciprocating seal ring, and described seal cavity and described fuel feed hole form oil pocket.
In specific embodiment, described compensation arrangement also comprises that described electro-hydraulic proportional valve is connected with described fuel feed hole for controlling the electro-hydraulic proportional valve of oil pressure.Control input pressure by electro-hydraulic proportional valve, thereby the tightening force of control piston and pull bar overcomes the gravity deformation of ram.
Preferably, the rear end of described pull bar is run through described oil cylinder piston and is fixedly connected with described piston by locking nut.
Preferably, the quantity of described pull bar is a plurality of, and a plurality of described pull bars are connected with described piston respectively.
In one embodiment, the quantity of described pull bar is two, and two described pull bars are set in parallel in the inside of ram body and symmetrical along the axis of ram body length direction.
Owing to adopting technique scheme, the present invention has the following advantages: by ram inside, pull bar being set, drive pull bar by the oil cylinder of ram rear end the cantilever of ram is strained backward, overcome the gravity deformation effect, thereby improve, land the machining accuracy of numerical control boring-milling center.The present invention is simple in structure, easy for installation, and cost of manufacture is lower.
The accompanying drawing explanation
Fig. 1 is cross-sectional view of the present invention.
In accompanying drawing: 1-ram body, the 2-block, 3-ram cover plate, the 4-screw, the 5-sealing gasket, the 6-fuel feed hole, the 7-cylinder block, the 8-reciprocating seal ring, the 9-piston, the 10-locking nut, 11-locks thin nut, 12-pull bar, 13-O type circle, 110-shoulder.
The specific embodiment
Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is elaborated.
Refer to Fig. 1, a kind of compensation arrangement of numerical control floor boring-milling center ram deformation induced by gravity comprises that rear end is connected with the ram body 1 of ram cover plate 3, also comprises:
Cylinder block 7, it is fixedly connected on by screw 4 on the ram cover plate 3 of ram body 1, is provided with the piston 9 that can seesaw in cylinder block 7, and the rear end of pull bar 12 is passed ram cover plate 3 and is fixedly connected with piston 9.Particularly, the rear end of pull bar 12 is run through oil cylinder piston 9 and is fixedly connected with described piston (9) with locking thin nut 11 by locking nut 10.
Wherein, also be provided with sealing gasket 5 between cylinder block 7 and ram cover plate 3.Piston 9 is arranged on cylinder block 7 inside, and piston 9 also is interval with O type circle 13 and reciprocating seal ring 8 along the outer shroud of fore-and-aft direction, and cylinder block 7, piston 9, reciprocating seal ring 8, O type circle and sealing gasket 5 form seal cavity.Cylinder block 7 is provided with the fuel feed hole 6 be connected with described seal cavity, and fuel feed hole 6 is between described O type circle 13 and described reciprocating seal ring 8, and described seal cavity and fuel feed hole 6 form oil pocket.Described compensation arrangement also comprises that described electro-hydraulic proportional valve is connected with described fuel feed hole 6 for controlling the electro-hydraulic proportional valve (not shown) of oil pressure.
Operation principle of the present invention is: when ram stretches out because deadweight deforms, pressure through electric-hydraulic proportion valve regulation pressure oil, pressure oil is in fuel feed hole 6 enters cylinder block 7, after driving piston, move, piston pulls pull bar 12, provide pull bar 12 required pulling force, thereby overcome the gravity deformation of ram, to guarantee the mobile accuracy of ram.
The quantity of described pull bar 12 can be for a plurality of, and a plurality of pull bars 12 are connected with piston 9 respectively and are synchronized with the movement.In the present embodiment, adopt two pull bars 12 to be set in parallel in the inside of ram body 1, two pull bars 12 are symmetrical along the axis of ram body 1 length direction.During two pull bar 12 tensions, the inside of ram body 1 is stressed more even.
Claims (7)
1. the compensation arrangement of a numerical control floor boring-milling center ram deformation induced by gravity, comprise that rear end is connected with the ram body (1) of ram cover plate (3), it is characterized in that, also comprises:
Pull bar (12), its length direction along described ram body (1) is inserted into forward the inside of described ram body (1) and is positioned at top position, the front end of described pull bar (12) is fixedly connected with block (2), and described block (2) shoulder (110) inner with described ram body (1) coordinates and be hooked on described shoulder (110);
Cylinder block (7), it is installed on the ram cover plate (3) of described ram body (1), be provided with the piston (9) that can seesaw in described cylinder block (7), the rear end of described pull bar (12) is passed described ram cover plate (3) and is fixedly connected with described piston (9).
2. the compensation arrangement of a kind of numerical control floor boring-milling center ram deformation induced by gravity according to claim 1, it is characterized in that: it is upper that described cylinder block (7) is fixedly connected on described ram cover plate (3) by screw, between described cylinder block (7) and described ram cover plate (3), also is provided with sealing gasket (5).
3. the compensation arrangement of a kind of numerical control floor boring-milling center ram deformation induced by gravity according to claim 2, it is characterized in that: described piston (9) is arranged on cylinder block (7) inside, described piston (9) also is interval with O type circle (13) and reciprocating seal ring (8) along the outer shroud of fore-and-aft direction, and described cylinder block (7), described piston (9), described reciprocating seal ring (8), described O type circle and described sealing gasket (5) form seal cavity; Described cylinder block (7) is provided with the fuel feed hole (6) be connected with described seal cavity, and described fuel feed hole (6) is positioned between described O type circle (13) and described reciprocating seal ring (8), and described seal cavity and described fuel feed hole (6) form oil pocket.
4. the compensation arrangement of a kind of numerical control floor boring-milling center ram deformation induced by gravity according to claim 3, it is characterized in that: described compensation arrangement also comprises that, for controlling the electro-hydraulic proportional valve of oil pressure, described electro-hydraulic proportional valve is connected with described fuel feed hole (6).
5. the compensation arrangement of a kind of numerical control floor boring-milling center ram deformation induced by gravity according to claim 1, it is characterized in that: the rear end of described pull bar (12) is run through described oil cylinder piston (9) and is fixedly connected with described piston (9) by locking nut.
6. the compensation arrangement of a kind of numerical control floor boring-milling center ram deformation induced by gravity according to claim 1, it is characterized in that: the quantity of described pull bar (12) is a plurality of, a plurality of described pull bars (12) are connected with described piston (9) respectively.
7. the compensation arrangement of a kind of numerical control floor boring-milling center ram deformation induced by gravity according to claim 6, it is characterized in that: the quantity of described pull bar (12) is two, and two described pull bars (12) are set in parallel in the inside of ram body (1) and symmetrical along the axis of ram body (1) length direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104352363A CN103465109A (en) | 2013-09-23 | 2013-09-23 | Compensation device for dead-weight deformation of ram of numerical control floor boring and milling machining center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104352363A CN103465109A (en) | 2013-09-23 | 2013-09-23 | Compensation device for dead-weight deformation of ram of numerical control floor boring and milling machining center |
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| CN103465109A true CN103465109A (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013104352363A Pending CN103465109A (en) | 2013-09-23 | 2013-09-23 | Compensation device for dead-weight deformation of ram of numerical control floor boring and milling machining center |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104551838A (en) * | 2015-01-15 | 2015-04-29 | 沈阳理工大学 | Combined spring deformation compensating device |
Citations (7)
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| DE2603900A1 (en) * | 1975-02-03 | 1976-08-05 | Hure Sa | MACHINE TOOL WITH A HORIZONTAL TOOL-HEAD HOLDER SLIDING ON A SUPPORT |
| JP2972140B2 (en) * | 1995-05-05 | 1999-11-08 | ギディングス アンド ルイス， インコーポレイテッド | Machine alignment compensation actuator system |
| JP2011098410A (en) * | 2009-11-06 | 2011-05-19 | Mitsubishi Heavy Ind Ltd | Ram deflection correcting device and correcting method |
| CN102380802A (en) * | 2011-11-03 | 2012-03-21 | 芜湖恒升重型机床股份有限公司 | Ram deflection deformation compensation device |
| CN102528566A (en) * | 2011-12-14 | 2012-07-04 | 中捷机床有限公司 | Ram flexibility compensation mechanism of heavy numerical control floor type milling and boring machine |
| CN202517334U (en) * | 2012-05-03 | 2012-11-07 | 山东鲁重数控机床股份有限公司 | Self weight deformation compensation device for ram of numerical control floor type boring and milling machine |
| CN203509781U (en) * | 2013-09-23 | 2014-04-02 | 苏州江源精密机械有限公司 | Compensating device for numerically controlled landing boring and milling center ram dead load deformation |
-
2013
- 2013-09-23 CN CN2013104352363A patent/CN103465109A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2603900A1 (en) * | 1975-02-03 | 1976-08-05 | Hure Sa | MACHINE TOOL WITH A HORIZONTAL TOOL-HEAD HOLDER SLIDING ON A SUPPORT |
| JP2972140B2 (en) * | 1995-05-05 | 1999-11-08 | ギディングス アンド ルイス， インコーポレイテッド | Machine alignment compensation actuator system |
| JP2011098410A (en) * | 2009-11-06 | 2011-05-19 | Mitsubishi Heavy Ind Ltd | Ram deflection correcting device and correcting method |
| CN102380802A (en) * | 2011-11-03 | 2012-03-21 | 芜湖恒升重型机床股份有限公司 | Ram deflection deformation compensation device |
| CN102528566A (en) * | 2011-12-14 | 2012-07-04 | 中捷机床有限公司 | Ram flexibility compensation mechanism of heavy numerical control floor type milling and boring machine |
| CN202517334U (en) * | 2012-05-03 | 2012-11-07 | 山东鲁重数控机床股份有限公司 | Self weight deformation compensation device for ram of numerical control floor type boring and milling machine |
| CN203509781U (en) * | 2013-09-23 | 2014-04-02 | 苏州江源精密机械有限公司 | Compensating device for numerically controlled landing boring and milling center ram dead load deformation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104551838A (en) * | 2015-01-15 | 2015-04-29 | 沈阳理工大学 | Combined spring deformation compensating device |
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Application publication date: 20131225 |