CN203664730U - Traction self-centering hexagonal hydraulic chuck - Google Patents
Traction self-centering hexagonal hydraulic chuck Download PDFInfo
- Publication number
- CN203664730U CN203664730U CN201420052641.7U CN201420052641U CN203664730U CN 203664730 U CN203664730 U CN 203664730U CN 201420052641 U CN201420052641 U CN 201420052641U CN 203664730 U CN203664730 U CN 203664730U
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- China
- Prior art keywords
- centering
- jaw
- chuck body
- claw
- hexagonal
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Abstract
A traction self-centering hexagonal hydraulic chuck comprises a cylindrical chuck body; three centering jaws and draw bars for driving every centering jaw to swing inwards or outwards to loosen or clamp a workpiece are mounted in the chuck body; a the chuck body is radially provided with mounting grooves of the centering jaws, and every centering jaw is movably mounted in the mounting groove through a positioned shaft; the draw bars are mounted on the middle portion of the chuck body and provided with limit clamping grooves for limiting the swing range of the centering jaws; the centering jaws are evenly distributed around the draw bars in the radial direction on the chuck body 1, and the lower ends of the centering jaws are snapped into the limit clamping grooves of the draw bars; a clamping jaw for clamping the workpiece is movably mounted on the upper portion of every centering jaw, and the upper end of every clamping jaw is provided with two or more clamping heads for clamping the workpiece. The traction self-centering hexagonal hydraulic chuck overcomes the shortcomings of poor versatility and less positioning points of an existing chuck and has the advantages of being simple in structure, accurate in positioning, extensive in versatility, wide in usable range and more in positioning points, enabling the workpiece to be clamped to be evenly stressed, and avoiding clamping the workpiece into deformation.
Description
Technical field
The utility model relates to a kind of towed self-centering hexagonal oild chuck.
Background technology
The Vehicle Processing principle of bearing is just as our automatic sharpening Macintosh, bearing is fixed on chuck, and chuck is fixed on again on the main shaft of High Rotation Speed, the High Rotation Speed of the rotation by main shaft with dynamic bearing, cutter gives a certain amount of feeding simultaneously, thereby completes the turning processing to bearing surface.At present, domestic Production of bearing producer workpiece machining clamp generally adopts triangle chuck or collet.Triangle chuck is applied widely, but the product geometric accuracy processing is poor; The product geometric accuracy that collet processes is good, but almost each model need be made a set ofly, and versatility is poor, and while changing fixture, workload is also large.Triangle chuck centering jaw is fixedly loaded on chuck body, cannot activity adjustment, and versatility is poor.
Bearing is in Vehicle Processing process, need to be subject to two kinds of power, primary need is subject to the expansionary force of chuck, and this expansionary force guarantees that bearing can not drop on claw, and triangle chuck only has 3 contact points, in the time that expansionary force is large, just easily make bearing deformation, become similar leg-of-mutton circle, the expansionary force that these 3 points bear simultaneously also easily discharges in subsequent heat treatment, makes deformation of products, become similar leg-of-mutton circle, much bearing machining factory all easily produces 3 casting skin products.The second bearing need to be subject to the cutting force from cutter.Bearing in turning process around axle center High Rotation Speed, cutter along radial direction to radially Cutting Force of one, bearing, triangle chuck, because only have 3 contact points, is subject to the just easy generation of radial cutting force again and radially collects together in the time of bearing High Rotation Speed, cannot guarantee machining accuracy.
Summary of the invention
It is a kind of by regulating centering jaw to coordinate the towed self-centering hexagonal oild chuck of different model Workpiece clamping that goal of the invention of the present utility model is to provide for prior art above shortcomings, there is simple in structure, registration, highly versatile, the scope of application is extensive, anchor point is many, make work to be clamped stressed evenly, be difficult for part folder to be out of shape.
Technical solution of the present utility model is: comprise a cylindrical chuck body; Three centering jaws are housed and for driving each centering jaw inwardly or outwards swinging to unclamp or the draw bar of clamping work pieces in chuck body; Described chuck body is radially provided with the mounting groove of centering jaw, and each centering jaw is loaded in mounting groove through locating shaft activity; Described draw bar is loaded on chuck body middle part, and draw bar is provided with the spacing draw-in groove for limiting each centering jaw hunting range; Upwards, the lower end of centering jaw is installed in the spacing draw-in groove of draw bar in the footpath that described centering jaw is distributed in chuck body 1 centered by draw bar; Each centering jaw top movable is equipped with the claw for clamping work, and each claw upper end is provided with two above dops for clamping workpiece.
Described draw bar is a cylindrical bar, and the top of draw bar is provided with and is milled with an annular stop draw-in groove, and the bottom of draw bar is provided with screw thread.
Described mounting groove both sides have the installing hole four connecting with mounting groove, and centering jaw is provided with the installing hole five that coordinates assembling with installing hole four, and the locating shaft activity of centering jaw in being loaded on installing hole four, installing hole five is loaded in chuck body.
Described centering jaw is L-shaped, the montant that comprises cross bar, is connected with cross bar, L shaped kink rounding, crossbar end is provided with is convenient to the curved portions that centering jaw swings, montant upper end is provided with the screwed hole for claw is installed, the montant of centering jaw is in mounting groove is flush-mounted in chuck body, and the cross bar of centering jaw stretches in the spacing draw-in groove that is stuck in draw bar in chuck body.
Described mounting groove takes the shape of the letter U, and the bottom of mounting groove is to match with L shaped kink to be convenient to the curved portions that centering jaw can swing along locating shaft under the drive of draw bar.
The montant upper end of described centering jaw is provided with the limiting stand of the step for claw is installed, and is provided with installing hole one in limiting stand;
Claw is provided with the installing hole two that coordinates assembling with limiting stand, and the bolt of claw in being plugged in installing hole two, installing hole one is loaded on centering jaw.
Described dop is step-like, comprises for the small stair portion of clamping workpiece with for padding the large stage portion of putting part; Dop is positioned at the inner side of claw.
Described claw is fan-shaped.
Be equipped with for preventing that introduced contaminants from falling into the baffle plate in chuck body on described chuck body top, and baffle plate is positioned at claw bottom.
Described baffle plate middle part is provided with the installing hole three for coordinate assembling with draw bar.
On the each claw of the utility model, there are two dops, dop after chuck expansion on claw contacts with bearing, and each contact point can decompose expansionary force uniformly, and the decomposition expansionary force that bearing is subject to is reduced, thereby the deflection that reduces bearing, makes the stressed more even of bearing component.What hexagonal chuck dop and bearing contacted is 6 stuck points, can guarantee the stability of bearing rotary, improves machining accuracy.
The towed self-centering hexagonal of the utility model oild chuck is by the clamping of corner's orthodrome (L shaped kink) workpiece that matched on mounting groove 7 and centering jaw 3 on chuck body 1.In the mounting groove 7 of circular arc 14 on centering jaw 3 on chuck body 1, move in a circle and make the montant of centering jaw 3 swing-10 °~10 ° toward axial direction around the circular arc of mounting groove 7, the swing of montant drives claw 4 relative chuck hub positions to change, the circumscribed circle diameter that is 6 formation of dop changes, as long as the internal diameter of processing work is within the scope of this, just can process, realize in production and do not need to change the object of changing the line of production fast that fixture gets final product, the product that has solved first size of spring clip need be changed the trouble of a chuck.
The workpiece of Vehicle Processing is forging, the precision of forging is very poor, the margin of tolerance is in 1mm left and right, the forging being placed on dop is not likely fairly regular circle, when forging clamps, 6 dops not necessarily can contact with forging internal diameter, at this moment step up power make claw 4 can be around installing hole 2 17 rotation until 2 dops all contact with forging internal diameter, two other claw is also realized in this way all the other 4 dops and is contacted with forging internal diameter equally, completes the self-centering of clamping workpiece process.
Utilize the hydraulic system of lathe self by draw bar, make claw in use open up into the gauge size of required processing, in the time of clamping work pieces, make workpiece self-centering by Self-centering device, reach the object of changing the line of production fast and improving machining accuracy.The utility model compared with prior art has: simple in structure, the scope of application extensively, highly versatile, the advantage such as cut down finished cost.
Accompanying drawing explanation
Fig. 1 is part installation diagram.
Fig. 2 is structural representation of the present utility model.
Fig. 3 is decomposition texture schematic diagram of the present utility model.
Fig. 4 is base 1 schematic diagram.
Fig. 5 is the structural representation of draw bar 2.
Fig. 6 is the structural representation of centering jaw 3.
Fig. 7 is claw 4 schematic diagrames.
Fig. 8 is baffle plate 5 schematic diagrames.
The specific embodiment
In Fig. 1,2,3, three centering jaws 3 are housed and for driving each centering jaw 3 inwardly or outwards to swing to unclamp or the draw bar 2 of clamping work pieces in chuck body 1, chuck body 1 is radially provided with the mounting groove 7 of centering jaw 3, and each centering jaw 3 is in locating shaft activity is loaded on mounting groove 7.Draw bar 2 is loaded on chuck body middle part through tapped through hole 6, and draw bar 2 is provided with the spacing draw-in groove 10 for limiting each centering jaw 3 hunting ranges.The footpath that centering jaw 3 is distributed in chuck body 1 centered by draw bar 2 upwards, the lower end of centering jaw 3 is installed in the spacing draw-in groove 10 of draw bar 2, each centering jaw 3 top movable are equipped with the claw 4 for clamping work, and each claw 4 upper ends are provided with two above dops 16 for clamping workpiece.Be equipped with for preventing that introduced contaminants from falling into the baffle plate 5 in chuck body 1 on chuck body 1 top, and baffle plate 5 is positioned at claw 4 bottoms.
In Fig. 4, chuck body 1 is radially provided with the mounting groove 7 of centering jaw 3, and mounting groove 7 takes the shape of the letter U, the curved portions that the bottom of mounting groove 7 can swing along locating shaft under the drive of draw bar 2 for ease of centering jaw 3.
In Fig. 5, draw bar 2 is a cylindrical bar, and the top of draw bar 2 is provided with and is milled with an annular stop draw-in groove 10, and the bottom of draw bar 2 is provided with screw thread.Draw bar 2 forms by adding long bolt.
In Fig. 6, centering jaw 3 is L-shaped, the montant that comprises cross bar, is connected with cross bar, L shaped kink 14 roundings, form orthodrome 14, and crossbar end is provided with is convenient to the curved portions 13 that centering jaw 3 swings, montant upper end is provided with the screwed hole 11 for claw 4 is installed, the montant of centering jaw 3 is in mounting groove 7 is flush-mounted in chuck body 1, and the cross bar of centering jaw 3 stretches in the spacing draw-in groove 10 that is stuck in draw bar 2 in chuck body 1, and the curved portions 13 of centering jaw 3 is convenient to the rotation of centering jaw 3 in spacing draw-in groove 10.The montant upper end of centering jaw 3 is provided with the limiting stand of the step for claw 4 is installed, and is provided with installing hole 1 in limiting stand.The curved portions 13 of centering jaw 3 matches with annular stop draw-in groove 10, orthodrome 14 matches with mounting groove 7 curved portions, the resistance producing when reducing centering jaw 3 and swinging along locating shaft.
In Fig. 7, claw 4 is provided with the installing hole 2 17 that coordinates assembling with limiting stand, and the bolt of claw 4 in being plugged in installing hole 2 17, installing hole 1 is loaded on centering jaw 3.
In Fig. 8, baffle plate 5 middle parts are provided with the installing hole three for coordinate assembling with draw bar 2, and baffle plate 5 is provided with erection hole 18.
When assembling, draw bar is arranged on the position of the tapped through hole 6 of chuck body, centering jaw 3 is loaded in mounting groove 7, bolt in hole 12 on hole 8 and centering jaw 3 by centering jaw 3 on being plugged in chuck body is fixed on centering jaw 3 on chuck body, and the curved portions (U-shaped structure) 13 of Fig. 6 centering jaw 3 also needs to insert in spacing draw-in groove 10 simultaneously.
Baffle plate (buckle) 5 use bolts are fixed on baffle plate 5 on base by the hole 9 on erection hole 18 and the chuck body of buckle, finally claw 4 use bolts are connected by the installing hole 1 of installing hole 2 17 and centering jaw 3.
The utility model use procedure is as follows:
1, make draw bar (haulage gear) have an axially-movable among a small circle by hydraulic coupling, the axially-movable of haulage gear drives Self-centering device in U-lag 7, to have a circular motion around Self-centering device orthodrome 14, drive claw to do radial motion, when claw does radial motion, dop does the opening and closing campaign of similar fish mouth.
2, by the inside caliper of bearing inner race on the dop 16 of claw, in the time pulling haulage gear downwards, claw is to inner central motion, the similar fish mouth of dop is shared, now bearing inner race is put into dop, upwards promote haulage gear, claw is to external movement again, and the similar fish mouth of dop opens, the expansion amount of dop has guaranteed that bearing is firmly stuck on dop, can not drop.
3, the angle of inclination of the orthodrome 14 of centering jaw 3 in the U-lag 7 of base, can change the magnitude range of the clamping inner ring internal diameter of claw, reaches self-centering effect.
Claims (10)
1. a towed self-centering hexagonal oild chuck, is characterized in that: comprise a cylindrical chuck body (1); Three centering jaws (3) are housed and for driving each centering jaw (3) to swing to unclamp or the draw bar (2) of clamping work pieces in chuck body (1); Described chuck body (1) is radially provided with the mounting groove (7) of centering jaw (3), and each centering jaw (3) is in locating shaft activity is loaded on mounting groove (7);
Described draw bar (2) is loaded on chuck body middle part, and draw bar (2) is provided with the spacing draw-in groove (10) for limiting each centering jaw (3) hunting range; Upwards, the lower end of centering jaw (3) is installed in the spacing draw-in groove (10) of draw bar (2) in the footpath that described centering jaw (3) is distributed in chuck body (1) centered by draw bar (2); Each centering jaw (3) top movable is equipped with the claw (4) for clamping work, and each claw (4) upper end is provided with two above dops (16) for clamping workpiece.
2. towed self-centering hexagonal oild chuck according to claim 1, is characterized in that: described draw bar (2) is a cylindrical bar, and the top of draw bar (2) is provided with and is milled with an annular stop draw-in groove (10), and the bottom of draw bar (2) is provided with screw thread.
3. towed self-centering hexagonal oild chuck according to claim 1, it is characterized in that: described mounting groove (7) both sides have the installing hole four connecting with mounting groove (7), centering jaw (3) is provided with the installing hole five (12) that coordinates assembling with installing hole four, and the locating shaft activity of centering jaw (3) in being loaded on installing hole four, installing hole five is loaded in chuck body (1).
4. towed self-centering hexagonal oild chuck according to claim 1, it is characterized in that: described centering jaw (3) is L-shaped, the montant that comprises cross bar, is connected with cross bar, L shaped kink (14) rounding, crossbar end is provided with is convenient to the curved portions (13) that centering jaw (3) swings, montant upper end is provided with the screwed hole (11) for claw (4) are installed, the montant of centering jaw (3) is in mounting groove (7) is flush-mounted in chuck body (1), and the cross bar of centering jaw (3) stretches in the spacing draw-in groove (10) that is stuck in draw bar (2) in chuck body (1).
5. towed self-centering hexagonal oild chuck according to claim 4, is characterized in that: described mounting groove (7) takes the shape of the letter U, and the bottom of mounting groove (7) is to match with L shaped kink to be convenient to the curved portions that centering jaw (3) swings.
6. towed self-centering hexagonal oild chuck according to claim 4, is characterized in that: the montant upper end of described centering jaw (3) is provided with the limiting stand of the step for claw (4) is installed, and is provided with installing hole one (11) in limiting stand;
Claw (4) is provided with the installing hole two (17) that coordinates assembling with limiting stand, and the bolt of claw (4) in being plugged in installing hole two (17), installing hole one (11) is loaded on centering jaw (3).
7. towed self-centering hexagonal oild chuck according to claim 1, is characterized in that: described dop (16) is step-like, comprises for the small stair portion of clamping workpiece with for padding the large stage portion of putting part; Dop (16) is positioned at the inner side of claw (4).
8. towed self-centering hexagonal oild chuck according to claim 1, is characterized in that: described claw (4) is for fan-shaped.
9. towed self-centering hexagonal oild chuck according to claim 1, is characterized in that: be equipped with for preventing that introduced contaminants from falling into the baffle plate (5) in chuck body (1) on described chuck body (1) top, and baffle plate (5) is positioned at claw (4) bottom.
10. towed self-centering hexagonal oild chuck according to claim 9, is characterized in that: described baffle plate (5) middle part is provided with the installing hole three for coordinate assembling with draw bar (2).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201420052641.7U CN203664730U (en) | 2014-01-27 | 2014-01-27 | Traction self-centering hexagonal hydraulic chuck |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201420052641.7U CN203664730U (en) | 2014-01-27 | 2014-01-27 | Traction self-centering hexagonal hydraulic chuck |
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CN203664730U true CN203664730U (en) | 2014-06-25 |
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CN201420052641.7U Expired - Fee Related CN203664730U (en) | 2014-01-27 | 2014-01-27 | Traction self-centering hexagonal hydraulic chuck |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110576630A (en) * | 2018-06-07 | 2019-12-17 | 宁波杉越新材料有限公司 | material compression device |
CN111318729A (en) * | 2018-12-14 | 2020-06-23 | 新兴重工湖北三六一一机械有限公司 | An inner circle centering chuck for vertical lathe |
CN116117193A (en) * | 2023-04-12 | 2023-05-16 | 中幸机械技术(沈阳)有限公司 | Automatic retract clamping chuck |
-
2014
- 2014-01-27 CN CN201420052641.7U patent/CN203664730U/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110576630A (en) * | 2018-06-07 | 2019-12-17 | 宁波杉越新材料有限公司 | material compression device |
CN110576630B (en) * | 2018-06-07 | 2022-04-12 | 宁波杉越新材料有限公司 | Material compression device |
CN111318729A (en) * | 2018-12-14 | 2020-06-23 | 新兴重工湖北三六一一机械有限公司 | An inner circle centering chuck for vertical lathe |
CN116117193A (en) * | 2023-04-12 | 2023-05-16 | 中幸机械技术(沈阳)有限公司 | Automatic retract clamping chuck |
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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: 20140625 Termination date: 20210127 |
|
CF01 | Termination of patent right due to non-payment of annual fee |