CN202726548U - Hydraulic clamping device - Google Patents
Hydraulic clamping device Download PDFInfo
- Publication number
- CN202726548U CN202726548U CN 201220377179 CN201220377179U CN202726548U CN 202726548 U CN202726548 U CN 202726548U CN 201220377179 CN201220377179 CN 201220377179 CN 201220377179 U CN201220377179 U CN 201220377179U CN 202726548 U CN202726548 U CN 202726548U
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- Prior art keywords
- groove
- oil
- resilient sleeve
- hydraulic
- hole
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- 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 provides a hydraulic clamping device which at least comprises a clamping seat, wherein a groove is formed in the middle of the upper end of the clamping seat; an elastic sleeve is mounted in the groove; a shaft hole with a round cross section is formed in the elastic sleeve; an upper flange and a lower flange, which are matched with the groove, are arranged at the peripheries of the upper end and the lower end of the elastic sleeve; the upper flange and the lower flange are in interference fit with the groove; the upper end surface of the upper flange is flush with that of the clamping seat; the lower end surface of the lower flange is jointed with the bottom of the groove; a closed oil chamber is formed among the upper flange, the lower flange, the inner wall of the groove and the outer side wall of the elastic sleeve; a through hole is formed in the outer side wall of the oil chamber and is connected with an oil line perpendicularly intersecting the through hole; the oil line is parallel to the central axis of the clamping seat; and the hydraulic oil is filled in the oil line. The hydraulic clamping device provided by the utility model is firm in clamping and accurate in positioning, avoids damaging axial parts to be processed, and is assisted by hydraulic power to save manual labor and material resources and improve work efficiency.
Description
Technical field
The utility model relates to a kind of clamping device, particularly a kind of hydraulic clamping device during for the pin shaft hole of processing on the planet carrier.
Background technology
When needing above the planet carrier to process the planet pin shaft hole, its axle head need to be carried out clamping, traditional axle is three-jaw or chuck with the anchor clamps use, one end of axle is blocked by three-jaw or chuck, but the axle claw can not clamp axial workpiece uniformly, need centering to lose time behind the clamping, and process each root axle, all need again centering, for this type of part is firmly fixing, the operator often needs firmly to lock chuck, but excessive clamping power causes crushing of part easily, the too small words of exerting oneself, also cause easily part becoming flexible in process, thereby the potential safety hazard of staying, existing clamping device are also relatively required great effort, and cause the low of operator's efficient.
Summary of the invention
In order to solve the deficiencies in the prior art, the utility model provide a kind of time saving and energy saving, clamping is firm, does not need the hydraulic clamping device of the processing planet carrier pin shaft hole of repetition centering.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of hydraulic clamping device, at least comprise deck, the medium position of described deck upper end has groove, resilient sleeve is installed in the groove, the inside of described resilient sleeve offers cross section and is circular axis hole, outer the placing of the upper end of resilient sleeve and lower end is provided with upper flange and the lower flange that matches with groove, on described, lower flange and groove are interference fit, the upper surface of upper flange is concordant with the upper surface of deck, fit in the lower surface of lower flange and the bottom of groove, on, the inwall of lower two flanges and groove and the lateral wall of resilient sleeve form the oil pocket of sealing, have through hole on the lateral wall of oil pocket, described through hole is connected with perpendicular crossing oil circuit, and oil circuit is parallel with the central axis of deck, hydraulic oil is housed in the oil circuit, the afterbody of oil circuit is connected with piston hole, and piston hole and oil circuit intersect vertically, and piston is installed in the piston hole, the afterbody of piston is connected with rotating nut, and turning rotating nut can pushing piston.
The shape of cross section of described groove is circular, and the shape of cross section of upper and lower two flanges with matching also is circular.
Form the sidewall thickness at oil pocket place on the described resilient sleeve at 0.5～1mm.
Be provided with the outer of projection on the described resilient sleeve on the centre position of the sidewall at formation oil pocket place, the height of resilient sleeve is greater than the degree of depth of groove, and its whole height is 45～50mm, and the thickness of outer is 2～3mm, highly is 8～10mm.
Described hydraulic oil adopts antiwear hydraulic oil, and its viscosity is 100mm
2/ s.
The top of oil circuit is provided with oil filler point, and the top of oil filler point is concordant with the end face on deck top, and sealing nut is installed in the oil filler point.
The utility model than the beneficial effect of prior art is: the hydraulic clamping device that the utility model provides, not only clamping is firm, nor can crush axial workpiece to be processed, and can accurately locate, wherein resilient sleeve and axle fit clearance are minimum, in 0.03mm, in the equally distributed situation of clamping force, the fit clearance of resilient sleeve and axle can reach below the 0.01mm, can realize quick-clamping, for the first time behind the processing parts centering, the following process part need not again centering, and by hydraulic booster, saved manpower and materials, improved operating efficiency.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the half sectional view of the top view of Fig. 1;
Fig. 3 is the part that the utility model is processed.
In the accompanying drawing: 1-deck, 2-groove, 3-resilient sleeve, 4-axis hole, 5-upper flange, 6-lower flange, 7-oil pocket, 8-through hole, 9-oil circuit, 10-piston hole, 11-piston, 12-rotating nut, 13-outer, 14-oil filler point, 15-sealing nut.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
A kind of hydraulic clamping device, with reference to Fig. 1, at least comprise deck 1, the medium position of described deck 1 upper end has groove 2, resilient sleeve 3 is installed in the groove 2, the inside of described resilient sleeve 3 offers cross section and is circular axis hole 4, outer the placing of the upper end of resilient sleeve 3 and lower end is provided with upper flange 5 and the lower flange 6 that matches with groove, on described, lower flange and groove 2 are interference fit, the upper surface of upper flange 5 is concordant with the upper surface of deck 1, fit in the bottom of the lower surface of lower flange 6 and groove 2, on, the inwall of lower two flanges and groove 2 and the lateral wall of resilient sleeve 3 form the oil pocket 7 of sealing, have through hole 8 on the lateral wall of oil pocket 7, described through hole 8 is connected with perpendicular crossing oil circuit 9, oil circuit 9 is parallel with the central axis of deck 1, in the oil circuit 9 hydraulic oil is housed, the afterbody of oil circuit 9 is connected with piston hole 10, piston hole 10 intersects vertically with oil circuit 9, piston 11 is installed in the piston hole 10, the afterbody of piston 11 is connected with rotating nut 12, turn rotating nut 12 can pushing piston 11 in piston hole 10 interior axially-movables, the tail end of rotating nut 12 protrudes from the peripheral end face of deck 1 lower end.
As preferred version, the shape of cross section of described groove 2 is circular, and the shape of cross section of upper and lower two flanges with matching also is circular.Form the sidewall thickness at oil pocket place on the described resilient sleeve 3 at 0.5～1mm.Be provided with the outer 13 of projection on the described resilient sleeve 3 on the centre position of the sidewall at formation oil pocket place, the height of resilient sleeve 3 is greater than the degree of depth of groove 2, and its whole height is 45～50mm, and the thickness of outer 13 is 2～3mm, highly is 8～10mm.Described hydraulic oil adopts antiwear hydraulic oil, and its viscosity is 100mm
2/ s.The top of oil circuit 9 is provided with oil filler point 14, and the top of oil filler point 14 is concordant with the end face on deck 1 top, and sealing nut 15 is installed in the oil filler point 14.
In the present embodiment, with reference to Fig. 2, the top of oil circuit 9 is provided with oil filler point 14, and by oil filler point 14, to oil circuit 9 interior adding antiwear hydraulic oils, the hydraulic pressure oil viscosity is 100mm
2/ s, adopt the hole shaft type interference fit of H7/u6 between upper flange 5 on the resilient sleeve 3 and lower flange 6 and the groove 2, before the working shaft-like part, with reference to Fig. 3, part among the figure is planet carrier to be processed, need to be at planet carrier processing planet pin shaft hole, first the axle head of planet carrier is put in the axis hole 4, because the height of resilient sleeve 3 is greater than the degree of depth of groove 2, so fit in the upper surface of the lower surface of the up starboard of planet carrier and resilient sleeve 3, and can not contact by deck, then turn rotating nut 12, piston 11 is moved axially in piston hole 10, the air pressure of 10 inside, compression piston hole, the hydraulic oil that inner air pressure promotes in the oil circuit 9 flows in the oil pocket 6 through through hole 7, movement along with piston 10, the more and more severity of the air pressure compression of piston hole 9 inside, force the lateral wall of the hydraulic oil compressing resilient sleeve 3 in the oil pocket 6, resilient sleeve 3 produces distortion, will clamp the clamping axial workpiece of section within it, thereby reach the purpose of clamping mandrel class part, in the present embodiment, owing to be provided with the outer 13 of projection on the described resilient sleeve 3 on the centre position of the sidewall at formation oil pocket place, and the thickness of the sidewall at the Thickness Ratio resilient sleeve 3 formation oil pocket places of outer 13 is thick, so when the sidewall of resilient sleeve 3 produces distortion, 13 places, outer can't produce distortion, have so just caused the up and down two ends of the sidewall of resilient sleeve 3 to produce distortion, form 2 axial end that clamp planet carrier to be processed, so that clamping power is more symmetrical and concentrated, clamping can be more fastening.
Claims (6)
1. hydraulic clamping device, at least comprise deck, it is characterized in that: the medium position of described deck upper end has groove, resilient sleeve is installed in the groove, the inside of described resilient sleeve offers cross section and is circular axis hole, outer the placing of the upper end of resilient sleeve and lower end is provided with upper flange and the lower flange that matches with groove, on described, lower flange and groove are interference fit, the upper surface of upper flange is concordant with the upper surface of deck, fit in the lower surface of lower flange and the bottom of groove, on, the inwall of lower two flanges and groove and the lateral wall of resilient sleeve form the oil pocket of sealing, have through hole on the lateral wall of oil pocket, described through hole is connected with perpendicular crossing oil circuit, oil circuit is parallel with the central axis of deck, hydraulic oil is housed in the oil circuit, the afterbody of oil circuit is connected with piston hole, piston hole and oil circuit intersect vertically, piston is installed in the piston hole, the afterbody of piston is connected with rotating nut, turning rotating nut can pushing piston axially-movable in piston hole, and the tail end of rotating nut protrudes from the peripheral end face of deck lower end.
2. hydraulic clamping device according to claim 1 is characterized in that: the shape of cross section of described groove is for circular, and the shape of cross section of upper and lower two flanges with matching also be circle.
3. hydraulic clamping device according to claim 1 is characterized in that: form the sidewall thickness at oil pocket place on the described resilient sleeve at 0.5～1mm.
4. hydraulic clamping device according to claim 1, it is characterized in that: the outer that is provided with projection on the described resilient sleeve on the centre position of the sidewall at formation oil pocket place, the height of resilient sleeve is greater than the degree of depth of groove, its whole height is 45～50mm, the thickness of outer is 2～3mm, highly is 8～10mm.
5. hydraulic clamping device according to claim 1 is characterized in that: described hydraulic oil adopts antiwear hydraulic oil, and its viscosity is 100mm
2/ s.
6. hydraulic clamping device according to claim 1, it is characterized in that: the top of oil circuit is provided with oil filler point, and the top of oil filler point is concordant with the end face on deck top, and sealing nut is installed in the oil filler point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220377179 CN202726548U (en) | 2012-07-31 | 2012-07-31 | Hydraulic clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220377179 CN202726548U (en) | 2012-07-31 | 2012-07-31 | Hydraulic clamping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202726548U true CN202726548U (en) | 2013-02-13 |
Family
ID=47652296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220377179 Expired - Fee Related CN202726548U (en) | 2012-07-31 | 2012-07-31 | Hydraulic clamping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202726548U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104308582A (en) * | 2014-10-17 | 2015-01-28 | 芜湖洪金机床有限公司 | Hydraulic chuck for machine tool |
-
2012
- 2012-07-31 CN CN 201220377179 patent/CN202726548U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104308582A (en) * | 2014-10-17 | 2015-01-28 | 芜湖洪金机床有限公司 | Hydraulic chuck for machine tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20150731 |
|
| EXPY | Termination of patent right or utility model |