CN214769045U - Automatic centering three-jaw chuck for large lathe - Google Patents
Automatic centering three-jaw chuck for large lathe Download PDFInfo
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- CN214769045U CN214769045U CN202120335200.8U CN202120335200U CN214769045U CN 214769045 U CN214769045 U CN 214769045U CN 202120335200 U CN202120335200 U CN 202120335200U CN 214769045 U CN214769045 U CN 214769045U
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- centering
- transmission shaft
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- supporting seat
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- 230000005540 biological transmission Effects 0.000 claims abstract description 45
- 238000009434 installation Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 9
- 210000000078 claw Anatomy 0.000 abstract description 6
- 230000033001 locomotion Effects 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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Abstract
The utility model belongs to the technical field of lathe processing, concretely relates to clamping chuck. The utility model provides an automatic centering three-jaw chuck for on large lathe, includes the chuck, installs the supporting seat in the chuck, wears to establish the pivot in the supporting seat, and the pivot passes through power supply drive, and pivot one end is equipped with initiative bevel gear, has seted up three sliding tray on the chuck terminal surface respectively, all is equipped with the transmission shaft in every sliding tray, and transmission shaft one end is connected with movable jack catch, and the other end is equipped with driven bevel gear, and the transmission shaft passes the supporting seat and meshes with initiative bevel gear mutually. Through set up bevel gear intermeshing and lead screw cooperation transmission on large-scale chuck, let power output shaft's turning force can transmit to the transmission shaft that links to each other with the activity jack catch for three activity jack catch draws close to the chuck center in step and presss from both sides tightly, utilizes three claws to realize accurate and stable centering from the centering, has solved the tight problem of wasting time and energy, from centering difference of pressing from both sides that appears on most large-scale lathes on the market.
Description
Technical Field
The utility model belongs to the technical field of lathe processing, concretely relates to clamping chuck.
Background
At present, the diameter of a chuck body on most large lathes on the market can reach several meters to the maximum, the large lathes with the diameter of the chuck body exceeding 800 millimeters generally adopt a four-claw single-action structure, and clamping of workpieces is completed by adjusting claw screw rods one by one, although the structure can stably clamp large workpieces, the clamping of four claws needs to be adjusted independently, so that time and labor are consumed, and in addition, the weight of the four-claw single-action structure is inevitably larger if the large workpieces need to be clamped; the clamping force of each claw cannot be guaranteed to be the same by manually clamping, so that the problem that the precision is low when a subsequent workpiece is machined is caused by the fact that even if the clamping force is very difficult to guarantee accurate centering if the clamping force is tight, the workpiece cannot be stably centered is always kept, and a self-centering clamping chuck suitable for a large lathe is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an electronic three-jaw chuck for on large-scale lathe, through set up bevel gear intermeshing and lead screw cooperation transmission on large-scale chuck, let power output shaft's turning force can transmit to the transmission shaft that links to each other with the activity jack catch on, make three activity jack catch draw close to the chuck center in step and press from both sides tightly, utilize the three-jaw to realize accurate and stable centering from centering, the tight problem that wastes time and energy, self-centering difference of clamp that appears on having solved most large-scale lathe on the market.
The purpose of the utility model is realized like this: the utility model provides an automatic centering three-jaw chuck for on large lathe, includes the chuck, installs the supporting seat in the chuck, wears to establish the pivot in the supporting seat, and the pivot passes through power supply drive, and pivot one end is equipped with initiative bevel gear, has seted up three sliding tray on the chuck terminal surface respectively, all is equipped with the transmission shaft in every sliding tray, and transmission shaft one end is connected with movable jack catch, and the other end is equipped with driven bevel gear, and the transmission shaft passes the supporting seat and meshes with initiative bevel gear mutually.
Preferably, a support piece is arranged in the support seat and abuts against the upper portion of the end portion of each transmission shaft to form a limit position.
Preferably, a first guide bearing is fixedly arranged at the upper end of the supporting seat, and the first guide bearing is sleeved on the supporting piece.
Preferably, the supporting seat is provided with an outer bearing groove and an inner bearing groove respectively, the outer bearing groove and the inner bearing groove are respectively provided with a second guide bearing, and the second guide bearing is sleeved on the transmission shaft.
Preferably, the lower end of the movable clamping jaw is provided with a pushing block, the pushing block is in screw fit transmission with the screw end of the transmission shaft, a guide block or a guide groove is formed in the sliding groove, and guide grooves corresponding to the guide block or guide blocks corresponding to the guide groove are formed on two sides of the pushing block.
Preferably, an installation groove is formed in the center of the chuck, and the support seat is fixedly arranged in the installation groove.
Preferably, the power source is a motor, and the rotating shaft is driven to rotate by the motor.
Compared with the prior art, the utility model outstanding and profitable technological effect is: the self-centering electric three-jaw chuck thoroughly overcomes the defect that clamping on a large machine tool chuck needs manual pulling and clamping; and because the large-scale workpiece is clamped manually, the clamping force of each claw cannot be ensured to be the same, the three-point centering principle is reasonably utilized, and the accurate and stable self-centering is realized while the clamping force is ensured.
Drawings
Fig. 1 is one of the schematic structural diagrams in the embodiment of the present invention.
Fig. 2 is a second schematic structural diagram in the embodiment of the present invention.
Fig. 3 is a partially enlarged view of a portion a in fig. 2.
Fig. 4 is a schematic view of the embodiment of the present invention in which bevel gears are engaged.
Fig. 5 is a cross-sectional view in an embodiment of the invention.
Fig. 6 is one of the exploded views in the embodiment of the present invention.
Fig. 7 is an exploded view of the second embodiment of the present invention.
Reference numerals: 1-a chuck; 2-a support seat; 3-a rotating shaft; 4-a driving bevel gear; 5-a sliding groove; 6-a transmission shaft; 7-movable claws; 8-a driven bevel gear; 9-a support; 10-a first guide bearing; 11-a second guide bearing; 12-outer bearing grooves; 13-inner bearing groove; 14-a pushing block; 15-mounting groove.
Detailed Description
The following describes the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1-7, a self-centering three-jaw chuck for use on large lathes,
including chuck 1 and the pivot 3 that links to each other with chuck 1, the pivot 3 passes through the power supply drive, the power supply is the motor, the pivot is rotated through the motor drive, chuck 1 diameter is more than 600 millimeters at least, chuck 1 center shaping has mounting groove 15, mounting groove 15 is used for fixing a position, supporting seat 2 has set firmly on mounting groove 15, the pivot 3 is worn to establish through motor drive in supporting seat 2, 3 one end shaping of pivot has initiative bevel gear 4, three sliding tray 5 have been seted up respectively on the chuck 1 terminal surface, all be equipped with transmission shaft 6 in every sliding tray 5, every transmission shaft 6 one end is connected with movable jaw, the other end is equipped with driven bevel gear 8, every transmission shaft 6 passes supporting seat 2 and meshes with initiative bevel gear 4 respectively, transmission shaft 6 is the lead screw, when transmission shaft 6 rotates, movable jaw then removes thereupon, make the turning force of pivot 3 can transmit to transmission shaft 6 through the setting of bevel gear, when the motor drives the rotating shaft 3 to rotate, the driving bevel gear 4 on the rotating shaft 3 drives the driven bevel gear 8 to rotate, the three transmission shafts 6 rotate simultaneously, and at the moment, the three movable clamping jaws synchronously approach to the center of the chuck 1 or are far away from the center of the chuck 1 to clamp and release workpieces.
The utility model discloses a dedicated motor drive pivot 3 of large-scale chuck rotates, and three movable jack catch draws close to the center in step and presss from both sides tightly, has rationally utilized three point centering principle, can also realize accurate and stable self-centering when guaranteeing clamping force, through using the utility model discloses a press from both sides tight waste time and energy, from the poor problem of centering of the clamp that appears on most large-scale lathe on the market can be solved completely to the electronic three paws of self-centering, the utility model discloses a self-centering can be used to on any large-scale lathe, and accommodation is wide, centering is accurate, labour saving and time saving, has thoroughly overcome and has pressed from both sides tight needs the drawback that artifical manual pulling is pressed from both sides tightly on large-scale machine tool chuck.
The utility model discloses a screw drive, adopt the spiral facing bar transmission to compare the resistance and can significantly reduce with the chuck of keeping in the market, activity jack catch round trip movement when the lead screw rotates promptly, make large-scale chuck 1 dress clamp efficiency when loosening and pressing from both sides tight work piece higher, and can reach 90 degrees vertical drive through the bevel gear transmission, be used for transmitting the motion between the cross axle, because of initiative bevel gear 4 and each tooth of driven bevel gear 8 can both reach compact meshing, not only can guarantee the bearing capacity when pressing from both sides tight large-scale work piece, and can also keep the biggest transmission efficiency when maintaining steady driven.
Be equipped with support piece 9 in the supporting seat 2 top, support piece 9 supports and leans on and forms hard contact on the tip of three transmission shafts 6, rotate along with the rotation of transmission shaft 6, support piece 9's setting has then played the effect that compresses tightly, push down transmission shaft 6 below through the meshing of initiative bevel gear 4 and driven bevel gear 8, then push down transmission shaft 6 top through support piece 9, it is spacing from top to bottom to form, transmission shaft 6 can not rock from top to bottom when making initiative bevel gear 4 and driven bevel gear 8 mesh transmission, thereby the driven stability has been guaranteed.
In addition, in order to ensure the rotation flexibility of the supporting member 9, the upper end of the supporting seat 2 is fixedly provided with the first guide bearing 10, so that the first guide bearing 10 is sleeved on the supporting member 9, the first guide bearing 10 is an angular contact bearing, the first guide bearing 10 can not only keep the supporting member 9 rotating, but also bear a large bidirectional load, the supporting member 9 is prevented from being easily damaged, and the service life of the supporting member 9 is prolonged.
Three groups of outer bearing grooves 12 and inner bearing grooves 13 are respectively arranged on the supporting seat 2, a second guide bearing 11 is respectively arranged in the outer bearing grooves 12 and the inner bearing grooves 13, the second guide bearing 11 is a plane bearing, the second guide bearing 11 is sleeved on the transmission shaft 6, the side edge of the second guide bearing 11 positioned on the outer bearing grooves 12 is provided with a bearing and cap, the bearing and cap are used for fixing the second guide bearing 11 and preventing the second guide bearing 11 from falling off, the second guide bearing 11 is arranged to ensure the flexibility of the transmission shaft 6 during rotation, the axial bearing force of the transmission shaft 6 on a large chuck is also improved, and the stability of the transmission shaft in the transmission process is ensured.
The activity jack catch lower extreme is equipped with and promotes piece 14, promotes the screw end screw fit transmission of piece 14 and transmission shaft 6, drives when the lead screw rotates and promotes piece 14 round trip movement, the protruding guide block that is equipped with in 5 both sides of sliding tray, the shaping of promotion piece 14 both sides has the guide way that corresponds the guide block, makes to promote piece 14 more smooth and stable when making a round trip to slide in sliding tray 5 under the prerequisite that guarantees that every activity jack catch clamp force is the same.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a three-jaw chuck of self-centering for on large-scale lathe which characterized in that: including chuck (1), install supporting seat (2) in chuck (1), wear to establish pivot (3) in supporting seat (2), power supply drive is passed through in pivot (3), pivot (3) one end is equipped with initiative bevel gear (4), three sliding tray (5) have been seted up on chuck (1) terminal surface respectively, all be equipped with transmission shaft (6) in every sliding tray (5), transmission shaft (6) one end is equipped with driven bevel gear (8), the other end is connected with movable jack catch (7), every transmission shaft (6) pass supporting seat (2) respectively and mesh mutually with initiative bevel gear (4).
2. The self-centering three-jaw chuck for large lathes according to claim 1, wherein: be equipped with support piece (9) in supporting seat (2), support piece (9) support and lean on the tip top of propping up every transmission shaft (6) and form spacingly.
3. A self-centering three-jaw chuck for use on large lathes according to claim 2, wherein: the upper end of the supporting seat (2) is fixedly provided with a first guide bearing (10), and the first guide bearing (10) is sleeved on the supporting piece (9).
4. A self-centering three-jaw chuck for use on large lathes according to claim 3, wherein: the first guide bearing (10) is an angular contact bearing.
5. The self-centering three-jaw chuck for large lathes according to claim 1, wherein: an outer bearing groove (12) and an inner bearing groove (13) are respectively formed in the supporting seat (2), second guide bearings (11) are respectively arranged in the outer bearing groove (12) and the inner bearing groove (13), and the transmission shaft (6) is sleeved with the second guide bearings (11).
6. The self-centering three-jaw chuck for large lathes according to claim 5, wherein: the second guide bearing (11) is a plane bearing.
7. The self-centering three-jaw chuck for large lathes according to claim 1, wherein: the movable clamping jaw is characterized in that the lower end of the movable clamping jaw (7) is provided with a pushing block (14), the pushing block (14) is in screw fit transmission with a screw rod end of the transmission shaft (6), a guide block or a guide groove is formed in the sliding groove (5), and a guide groove corresponding to the guide block or a guide block corresponding to the guide groove is formed in two sides of the pushing block (14).
8. The self-centering three-jaw chuck for large lathes according to claim 1, wherein: the center of the chuck (1) is formed with an installation groove (15), and the supporting seat (2) is fixedly arranged in the installation groove (15).
9. The self-centering three-jaw chuck for large lathes according to claim 1, wherein: the power source is a motor, and the rotating shaft (3) is driven to rotate by the motor.
10. The self-centering three-jaw chuck for large lathes according to claim 1, wherein: the diameter of the chuck (1) is at least more than 800 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120335200.8U CN214769045U (en) | 2021-02-05 | 2021-02-05 | Automatic centering three-jaw chuck for large lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120335200.8U CN214769045U (en) | 2021-02-05 | 2021-02-05 | Automatic centering three-jaw chuck for large lathe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214769045U true CN214769045U (en) | 2021-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120335200.8U Active CN214769045U (en) | 2021-02-05 | 2021-02-05 | Automatic centering three-jaw chuck for large lathe |
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| CN (1) | CN214769045U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117532033A (en) * | 2023-11-21 | 2024-02-09 | 北京速瑞特科技有限公司 | Self-braking centering chuck |
-
2021
- 2021-02-05 CN CN202120335200.8U patent/CN214769045U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117532033A (en) * | 2023-11-21 | 2024-02-09 | 北京速瑞特科技有限公司 | Self-braking centering chuck |
| CN117532033B (en) * | 2023-11-21 | 2024-07-23 | 北京速瑞特科技有限公司 | Self-braking centering chuck |
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