CN101920581A - Multi-groove type hydrostatic guideway and fine punching pressure machine - Google Patents
Multi-groove type hydrostatic guideway and fine punching pressure machine Download PDFInfo
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- CN101920581A CN101920581A CN 201010248047 CN201010248047A CN101920581A CN 101920581 A CN101920581 A CN 101920581A CN 201010248047 CN201010248047 CN 201010248047 CN 201010248047 A CN201010248047 A CN 201010248047A CN 101920581 A CN101920581 A CN 101920581A
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- guiding gutter
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Abstract
The invention discloses a multi-groove type hydrostatic guideway and a fine punching pressure machine. The multi-groove type hydrostatic guideway comprises a main cylinder and a plunger, wherein the plunger is provided with a smooth outer wall; the inner wall of the main cylinder is longitudinally provided with a plurality of flow guide grooves; and hydraulic oil can generate eddy resistance when passing through the edges of the flow guide grooves every time. The multi-groove type hydrostatic guideway has the advantages of large damping force, high reliability, high carrying capacity, easy processing, low cost, and the like and is particularly suitable for a large-tonnage fine punching pressure machine.
Description
Technical field
The present invention relates to a kind of hydrostatic slideway that is applicable to the large-tonnage fine blanking press, relate in particular to a kind of multi-groove type hydrostatic slideway and fine blanking press.
Background technology
Guide rail structure is the core technology of fine blanking press, directly influences its guiding accuracy and life-span.The fine blanking press guide rail structure mainly contains two big classes at present:
One class is a rolling guide, and as shown in Figure 1, guide rail is made up of four row's roller guides 11, and back two rows are installed in parallel in fuselage 13 rear sides, and preceding two rows and fuselage front are at 45, and symmetry is installed on the cover plate 15.This guide rail guiding accuracy height, but belong to a contact guide frame, the specific contact pressure height, rigidity, shock resistance are all relatively poor, are suitable for small-sized fine blanking press;
Another kind of is rail plate, and as shown in Figure 2, rail plate 22 adopts wear resistant alloy material, is used for guaranteeing guide precision and life-span.The guiding accuracy of this guide rail is not as rolling guide, but the guiding rigidity is better than rolling guide, is mainly used in the large-tonnage fine blanking press.But it is high that this structure requires process technology, and need the high accuracy guide rail hydraulic system of configure dedicated, complex structure, cost height.
Summary of the invention
The purpose of this invention is to provide that a kind of damping force is big, good reliability, bearing capacity are strong, handling ease, multi-groove type hydrostatic slideway and fine blanking press with low cost.
The objective of the invention is to be achieved through the following technical solutions:
Multi-groove type hydrostatic slideway of the present invention comprises master cylinder, is provided with plunger in the described master cylinder, and the outer wall of described plunger is a smooth outer wall, and the inwall of described master cylinder vertically is provided with many guiding gutters.
Fine blanking press of the present invention, this fine blanking press are provided with above-mentioned multi-groove type hydrostatic slideway.
As seen from the above technical solution provided by the invention, multi-groove type hydrostatic slideway of the present invention and fine blanking press, because the inwall of the master cylinder of hydrostatic slideway vertically is provided with many guiding gutters, the seamed edge of a guiding gutter of the every mistake of hydraulic oil, the capital produces eddy resistance, and damping force is big, good reliability, strong, the handling ease, with low cost of bearing capacity.
Description of drawings
Fig. 1 is the schematic cross-section of roller guide on a kind of fine blanking press of the prior art;
Fig. 2 is a sliding rail structure schematic diagram on a kind of fine blanking press of the prior art;
Fig. 3 a is guiding gutter schematic diagram among the present invention;
Fig. 3 b is that the A-A of Fig. 3 a is to local enlarged diagram;
The eddy resistance schematic diagram that Fig. 4 produces by guiding gutter for hydraulic oil among the present invention;
Fig. 5 is the structure principle chart of multi-groove type hydrostatic slideway of the present invention.
Among the figure: 11. roller guides, 12. slide blocks, 13. fuselages, 14. pads, 15. cover plates; 21. counter pressure cylinder, 22. rail plates, 23. plungers, 24. master cylinders, 25. fuselages; 31. plunger, 32. master cylinders, 33. high-pressure troughs, 34. annular cylinders, 35. guiding gutters, 36. fuselages, 37. gaps feedback throttling arrangement.
The specific embodiment
Multi-groove type hydrostatic slideway of the present invention, its preferable specific embodiment comprises master cylinder as shown in Figure 3, is provided with plunger in the described master cylinder, and the outer wall of described plunger is a smooth outer wall, and the inwall of described master cylinder vertically is provided with many guiding gutters.
The degree of depth of described guiding gutter is 1-2 a times of the gap between described master cylinder and the plunger, and described many guiding gutters are covered with the inwall of described master cylinder continuously.
The cross section of described guiding gutter is a triangle, also can be other shape.
As shown in Figure 5, there is the high-pressure trough of an annular at the middle part of the inwall of described master cylinder, is covered with guiding gutter respectively on the master cylinder inwall of the both sides of described high-pressure trough, is respectively equipped with gap feedback throttling arrangement between the two ends of described master cylinder and the described plunger;
The inner of described guiding gutter links to each other with described high-pressure trough, and the outer end of described guiding gutter extends to described gap feedback throttling arrangement.
Fine blanking press of the present invention, this fine blanking press are provided with above-mentioned multi-groove type hydrostatic slideway.
Multi-groove type hydrostatic slideway of the present invention is applicable to the guide rail structure of large-tonnage fine blanking press, and it is big to have damping force, good reliability, and bearing capacity is strong, handling ease, advantage such as with low cost is for the design of large-tonnage fine blanking press with produce most important.
Operation principle of the present invention is: hydraulic oil enters high-pressure trough through carrying the duct, overflows by guiding gutter and gap feedback throttling arrangement.Plunger is perfectly smooth in the hydrostatic slideway, and the inwall of master cylinder is covered with guiding gutter continuously, the hydrostatic pressure of generation and plunger is not directly contacted with master cylinder, thereby significantly reduce wearing and tearing and friction.When plunger was under pressure, the hydraulic oil that has improved pressure promptly overflowed through guiding gutter.When if plunger is subjected to be pressed towards on one side than the large eccentricity load, because the acting in conjunction of guiding gutter and gap throttling arrangement makes that the little one side pressure in gap is bigger, thereby makes plunger remain at the center.
As shown in Figure 3, key of the present invention is the use of guiding gutter, is covered with guiding gutter continuously at the inwall of master cylinder, and the center line of guiding gutter and plunger is parallel.This guiding gutter is very thin, and quantity is a lot, arranges continuously one by one; The cross sectional shape of guiding gutter is regardless of, preferably triangle; The degree of depth of guiding gutter is very shallow, is slightly larger than the gap between the guide rail; Guiding gutter can be made with embossing, corrosion or easy method.
As shown in Figure 4, just because of the existence of guiding gutter, seamed edge of the every mistake of hydraulic oil all can produce eddy resistance.When guiding gutter is very thin when a lot, hydraulic oil still in the higher-pressure region, continues to play the high pressure effect after one seamed edge crossed in hot side, thereby makes the hydraulic oil of hot side by tangentially being left to the few of step-down side.Just because of the maintenance of this pressure differential, make plunger be pushed back the center.This powerful prevention hydraulic oil is by the ability of high-pressure spray to low pressure, and the effect place of guiding gutter also is the key that the present invention distinguishes other kind hydrostatic slideway just.
Below by specific embodiment the application is described in detail:
As shown in Figure 5.Constitute hydrostatic slideway by plunger 31 and master cylinder 32, certain clearance is arranged between them.An annular high-pressure trough 33 is arranged in master cylinder 32, and hydraulic oil enters high-pressure trough 33 through annular cylinder 34.Be covered with guiding gutter 35 at the two ends of master cylinder 32, guiding gutter is very thin, and quantity is a lot, can reach hundreds of along the master cylinder inner periphery.The inner of guiding gutter 35 links to each other with high-pressure trough 33, but the outer end is less than the end of master cylinder 32.At the both ends of master cylinder 32 is gap feedback throttling arrangement 37, and the hydraulic oil of process guiding gutter 35 overflows by gap feedback throttling arrangement 37.
In fine blanking press when work,, when plunger 31 was in zero load or pressure in the center, pressure was balance all around, and the clearance C of gap feedback throttling arrangement 37 also is uniform.When plunger 31 because during load effect secundly, evenly being broken of clearance C.Hydraulic oil makes the little one side end discharge of clearance C of gap feedback throttling arrangement 37 reduce by the effect of guiding gutter 35, and pressure falls and reduces; One side end discharge that clearance C is big increases, and increase falls in pressure.Therefore the little one side average pressure in gap will increase; In like manner, the gap greatly on one side average pressure to reduce.This pressure differential can produce and add the moment that eccentric load causes direction of rotation, and plunger 31 is recentered.
The guide rail the very important point of large-tonnage fine blanking press is exactly a good rigidly, and the ability of anti-bias load is strong.And this multi-groove type hydrostatic slideway meets the demands just.And the employing of guiding gutter, key of the present invention just.This guiding gutter structure, the hydraulic oil that can effectively stop hot side tangentially hoop flows to step-down side, thereby at utmost guarantees pressure differential, realizes the effect of the balance unbalance loading of guide rail.The bearing capacity of this hydrostatic slideway is big more, and the ability of anti-bias load is strong more, and rigidity is just good more, therefore is applicable to the large-tonnage fine blanking press.
The above; only for the preferable specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (6)
1. a multi-groove type hydrostatic slideway comprises master cylinder, is provided with plunger in the described master cylinder, it is characterized in that, the outer wall of described plunger is a smooth outer wall, and the inwall of described master cylinder vertically is provided with many guiding gutters.
2. multi-groove type hydrostatic slideway according to claim 1 is characterized in that, the degree of depth of described guiding gutter is 1-2 a times of the gap between described master cylinder and the plunger, and described many guiding gutters are covered with the inwall of described master cylinder continuously.
3. multi-groove type hydrostatic slideway according to claim 2 is characterized in that, the cross section of described guiding gutter is a triangle.
4. according to claim 1,2 or 3 described multi-groove type hydrostatic slideways, it is characterized in that, there is the high-pressure trough of an annular at the middle part of the inwall of described master cylinder, be covered with guiding gutter respectively on the master cylinder inwall of the both sides of described high-pressure trough, be respectively equipped with gap feedback throttling arrangement between the two ends of described master cylinder and the described plunger;
The inner of described guiding gutter links to each other with described high-pressure trough, and the outer end of described guiding gutter extends to described gap feedback throttling arrangement.
5. a fine blanking press is characterized in that, this fine blanking press is provided with claim 1,2 or 3 described multi-groove type hydrostatic slideways.
6. a fine blanking press is characterized in that, this fine blanking press is provided with the described multi-groove type hydrostatic slideway of claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010248047 CN101920581A (en) | 2010-08-06 | 2010-08-06 | Multi-groove type hydrostatic guideway and fine punching pressure machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010248047 CN101920581A (en) | 2010-08-06 | 2010-08-06 | Multi-groove type hydrostatic guideway and fine punching pressure machine |
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| CN101920581A true CN101920581A (en) | 2010-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010248047 Pending CN101920581A (en) | 2010-08-06 | 2010-08-06 | Multi-groove type hydrostatic guideway and fine punching pressure machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189410A (en) * | 2011-03-23 | 2011-09-21 | 西安交通大学 | T-shaped hydrostatic guide rail for precision finishing machine tool |
| CN105108500A (en) * | 2015-08-24 | 2015-12-02 | 中南大学 | Hydrostatic guideway |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105066A (en) * | 1986-08-26 | 1987-10-21 | 机械工业部北京电机研究所 | A kind of hydrostatic bearing or hydrostatic fluid cushion device |
| CN2490367Y (en) * | 2000-10-28 | 2002-05-08 | 戚耀华 | Lever-type multifunction water-saving tap |
| CN1673577A (en) * | 2005-04-26 | 2005-09-28 | 彭利 | Rotary positive displacement hydraulic device |
-
2010
- 2010-08-06 CN CN 201010248047 patent/CN101920581A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105066A (en) * | 1986-08-26 | 1987-10-21 | 机械工业部北京电机研究所 | A kind of hydrostatic bearing or hydrostatic fluid cushion device |
| CN2490367Y (en) * | 2000-10-28 | 2002-05-08 | 戚耀华 | Lever-type multifunction water-saving tap |
| CN1673577A (en) * | 2005-04-26 | 2005-09-28 | 彭利 | Rotary positive displacement hydraulic device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189410A (en) * | 2011-03-23 | 2011-09-21 | 西安交通大学 | T-shaped hydrostatic guide rail for precision finishing machine tool |
| CN105108500A (en) * | 2015-08-24 | 2015-12-02 | 中南大学 | Hydrostatic guideway |
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Application publication date: 20101222 |