CN210359340U - Hydraulic internal expanding clamp for tailstock of machine tool - Google Patents
Hydraulic internal expanding clamp for tailstock of machine tool Download PDFInfo
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- CN210359340U CN210359340U CN201920878800.1U CN201920878800U CN210359340U CN 210359340 U CN210359340 U CN 210359340U CN 201920878800 U CN201920878800 U CN 201920878800U CN 210359340 U CN210359340 U CN 210359340U
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- mandrel
- tailstock
- internal expanding
- machine tool
- rises
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Abstract
The utility model discloses a lathe tailstock hydraulic pressure internal expanding anchor clamps, including the dabber, the one end of dabber is fixed on the lathe tailstock, the other end is provided with the cover body that rises, and the cover body that rises is equipped with the locking piece including the core that rises and the cover that rises, the free end of dabber, is equipped with the thrust ball bearing with locking piece looks butt on the lateral wall of the core that rises, is equipped with bearing between the interior pore wall of the core that rises and the dabber, has cup jointed the hydro-cylinder body that possesses the axial linear displacement in the spindle, is equipped with on the hydro-cylinder body and rises the cover drive end thrust ball bearing of. The utility model discloses can realize the internal expanding formula clamping to the tubulose, and the cover body that rises possesses and the tubulose follow-up rotary displacement for the tubulose obtains effective clamping, satisfies the rotary machine machining precision demand. The whole design is ingenious, repeated clamping precision is ensured, product processing quality is improved, the rapid clamping device has the characteristic of rapid clamping, and working efficiency is greatly improved.
Description
Technical Field
The utility model relates to a lathe tailstock hydraulic pressure internal expanding anchor clamps belongs to the technical field of siphonozooid fixture.
Background
In industrial production, work processing of a tubular structure is involved, and it is necessary to perform work forming such as turning on a tube wall of a tubular body by fastening both ends of the tubular body and then rotationally driving the tubular body.
In the operation of the lathe, one end of the tubular body needs to be matched and connected with a tailstock of a machine tool, the other end of the tubular body needs to be matched and connected with a rotary driving source, the tubular body is axially clamped through the relative displacement of the rotary driving source relative to the tailstock of the machine tool, and then the rotary driving operation is carried out.
In traditional operation, need design on the lathe tailstock and siphonozooid matched with fixed knot construct, what generally adopted is the tip cone structure, and it is relatively poor with the siphonozooid between the cooperation precision, produce deformation easily among the gyration process, lead to the product machining precision relatively poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the not enough of above-mentioned prior art, there is the poor scheduling problem of precision to traditional tip cone structure is fixed to the tubular body, provides lathe tailstock hydraulic pressure internal expanding anchor clamps.
In order to achieve the above purpose, the utility model discloses the technical scheme who adopts is:
a hydraulic internal expanding clamp of a machine tool tailstock, which is used for internally expanding and fixing one end of a tubular body,
comprises a mandrel, one end of the mandrel is fixedly arranged on a tailstock of a machine tool, the other end of the mandrel is provided with an expansion sleeve body, the expansion sleeve body comprises an expansion core and an expansion sleeve, the free end of the mandrel is provided with a locking piece used for limiting the expansion core, the side wall of the expansion core is provided with a thrust ball bearing which is abutted against the locking piece, a needle bearing is arranged between the inner hole wall of the expansion core and the mandrel,
the mandrel is sleeved with an oil cylinder body with axial linear displacement, the oil cylinder body is provided with a driving end axially interfering with the expansion sleeve, and the driving end is provided with a driving end thrust ball bearing.
Preferably, the oil cylinder body comprises a cylinder seat and a cylinder sleeve which are movably sleeved on the mandrel, an oil cavity is formed between the cylinder seat and the cylinder sleeve, the cylinder seat and the cylinder sleeve are detachably connected,
the mandrel is provided with a ring bulge matched and connected with the oil cavity, and the driving end thrust ball bearing is arranged at the free end of the cylinder sleeve.
Preferably, the cylinder base is provided with an oil inlet and an oil outlet which are connected with an external oil source.
Preferably, sealing elements are respectively arranged between the cylinder sleeve and the mandrel, between the cylinder base and the mandrel, and between the annular protrusion and the oil cavity.
Preferably, the mandrel is provided with a ring platform for limiting the axial displacement of the needle bearing.
Preferably, the expansion sleeve is provided with a plurality of flexible clamping rings which are axially arranged at intervals.
Preferably, the machine tool tailstock includes a chuck provided to face the machine tool tailstock, the chuck being fixed to the other end of the tubular body, and the chuck being provided with a rotation drive source.
Preferably, the chuck is a three-jaw chuck for radially outwardly clamping the pipe within the tubular body.
The beneficial effects of the utility model are mainly embodied in that:
1. the internal expanding type clamping of the tubular body can be realized, and the expanding sleeve body has follow-up rotary displacement with the tubular body, so that the tubular body is effectively clamped, and the requirement on the machining precision of a rotary machine is met.
2. The oil cylinder body and the mandrel are ingeniously combined, so that the internal expansion driving of the expansion sleeve body is convenient to realize, the free rotary displacement of the expansion sleeve body cannot be interfered, and the fixed matching requirement between the internal expansion clamp and the tailstock of the machine tool is met.
3. The whole design is ingenious, repeated clamping precision is ensured, product processing quality is improved, the rapid clamping device has the characteristic of rapid clamping, and working efficiency is greatly improved.
Drawings
Fig. 1 is a sectional view of the clamping state of the hydraulic internal expanding clamp of the tailstock of the machine tool.
Fig. 2 is the structure schematic diagram of the hydraulic internal expanding clamp of the machine tool tailstock.
Detailed Description
The utility model provides a lathe tailstock hydraulic pressure internal expanding anchor clamps. The technical solution of the present invention will be described in detail below with reference to the accompanying drawings so as to be easier to understand and grasp.
A hydraulic internal expanding jig for a machine tool tailstock, as shown in fig. 1 and 2, is used for internally expanding and fixing one end 11 of a tubular body 1.
This lathe tailstock hydraulic pressure internal expanding anchor clamps includes dabber 2, and the one end of dabber 2 is fixed to be set up on the lathe tailstock, the other end is provided with the cover body 3 that rises, and the cover body 3 that rises is equipped with and is used for the spacing locking piece 21 of the core 31 that rises including the core 31 that rises and the cover 32 that rises, dabber 2's free end, is equipped with the thrust ball bearing 4 with locking piece 21 looks butt on the lateral wall of the core 31 that rises, is equipped with bearing 5 between the inner hole wall of the core 31 that rises and the dabber 2.
An oil cylinder body 6 with axial linear displacement is sleeved on the mandrel 2, a driving end axially interfering with the expansion sleeve 32 is arranged on the oil cylinder body 6, and a driving end thrust ball bearing 7 is arranged on the driving end.
The specific implementation process and principle description are as follows:
first the spindle 2 is fixed to the tailstock of the machine tool without axial displacement.
When one end 11 of the tubular body 1 is fixed, one end of the mandrel 2 extends into the inner hole of the tubular body 1, and is axially displaced towards the expansion sleeve 32 through the oil cylinder body 6, the expansion sleeve 32 and the expansion core 31 are relatively displaced by the driving end of the mandrel, and the expansion core 31 is limited by the locking piece 21, so that the expansion sleeve 32 is radially expanded and deformed, and is clamped and fixed with the inner hole of the tubular body 1.
During the rotation driving of the tubular body 1, the expansion sleeve body 3 has a rotational displacement following the tubular body 1 due to the design of the needle bearing 5, the thrust ball bearing 4, and the drive end thrust ball bearing 7. While the cylinder block 6 is circumferentially fixed. With such a design, the cylinder block 6 can be easily mounted.
It should be noted that the expansion core 31 is axially limited on the mandrel 2, so that after the tubular body 1 is machined and the driving end of the oil cylinder body 6 is separated from the expansion sleeve 32, the expansion sleeve 32 can be separated from the expansion core 31 only by axially pushing the tubular body 1, and the unloading operation is performed.
In a specific embodiment, the oil cylinder body 6 comprises a cylinder seat 61 and a cylinder sleeve 62 which are movably sleeved on the mandrel 2, an oil chamber 63 is formed between the cylinder seat 61 and the cylinder sleeve 62, and the cylinder seat 61 and the cylinder sleeve 62 are detachably matched. The cylinder base 61 is provided with an oil inlet and an oil outlet for connecting an external oil source.
The mandrel 2 is provided with a ring bulge 22 matched and connected with the oil cavity 63, and the driving end thrust ball bearing 7 is arranged at the free end of the cylinder sleeve.
Specifically, the cylinder base 61 and the cylinder sleeve 62 are movably connected on the mandrel 2 in a matched mode and are suitable for carrying the oil cylinder body 6, and the detachable structures of the cylinder base 61 and the cylinder sleeve 62 are convenient to assemble after being sleeved on the two sides of the mandrel 2, and the mandrel 2 does not need to be designed in a split mode.
When the oil cylinder body 6 is driven, the oil cavity 63 is filled with oil or pumped with oil, and the axial displacement of the oil cylinder body 6 relative to the annular protrusion 22 can be realized. More specifically, the annular projection 22 divides the oil chamber 63 into two chambers, while the chamber on the side of the cylinder block 61 connects the oil passages, and when filling the chamber with oil, the cylinder block 6 is displaced axially away from the tubular body 1, and when pumping the chamber, the cylinder block 6 is displaced axially towards the tubular body 1.
In one embodiment, the sealing members 8 are respectively disposed between the cylinder sleeve 62 and the mandrel 2, between the cylinder seat 61 and the mandrel 2, and between the annular protrusion 22 and the oil chamber 63. Namely, the sealing performance of the oil path of the oil cylinder body 6 is realized.
In the present case, the cylinder liner 62 has an extension end extending into the inner bore of the tubular body 1, the extension facilitates interference with the expansion sleeve 32 and facilitates disassembly of the tubular body 1 after machining, specifically, after the tubular body 1 is machined, the cylinder sleeve 62 is separated from the expansion sleeve 32 through the axial displacement of the oil cylinder body, at the moment, the clamp at the other end of the tubular body 1 is loosened, the tubular body 1 is held to move towards the tailstock direction of a machine tool, the separation of the expansion sleeve 32 and the expansion core 31 can be realized, and after the separation, because the extension end is smaller than the inner pore canal, therefore, the tubular body 1 can still continuously move towards the tailstock of the machine tool, and can be separated from the clamping end of the clamp after moving, therefore, the pipe body can be drawn out after slightly deviating from one side of the clamping end, the clamp does not need to be driven to axially displace and be detached, the clamping can be realized in a similar mode, and the mode of the embodiment only meets the requirement of the pipe body 1 with a certain length.
In a particular embodiment, the mandrel 2 is provided with a land 23 for limiting the axial displacement of the needle bearing 5. And the expansion core 31 is integrally connected with the needle bearing 5. Namely, the axial limit of the expansion core 31 is realized through the cooperation of the ring platform 23 and the locking piece 21.
In one embodiment, to increase the stability of the internal expansion mating, the expansion sleeve 32 is provided with a plurality of axially spaced flexible retaining rings 321.
The radial abutting stability between the expansion sleeve 32 and the inner hole of the tubular body 1 is satisfied, stable relative friction force is provided, and the inner hole is not damaged.
The hydraulic internal expanding clamp for the machine tool tailstock further comprises a chuck 9 arranged opposite to the machine tool tailstock, wherein the chuck 9 is fixed with the other end 12 of the tubular body 1, and the chuck 9 is provided with a rotary driving source.
The two ends of the tubular body 1 are effectively fixed through the internal expanding clamp and the chuck 9, and the tubular body 1 is rotationally driven through the chuck 9, so that the clamping requirement is met. More specifically, the chuck 9 is a three-jaw chuck for radially outwardly clamping the inner pipe of the tubular body 1, and is easily engaged with an inwardly expanding clamp.
Can discover through the above description, the utility model discloses lathe tailstock hydraulic pressure internal expanding anchor clamps can realize the internal expanding formula clamping to the siphonozooid, and the cover body that just rises possesses and siphonozooid follow-up rotary displacement for the siphonozooid obtains effective clamping, satisfies the rotary machine machining precision demand. The oil cylinder body and the mandrel are ingeniously combined, so that the internal expansion driving of the expansion sleeve body is convenient to realize, the free rotary displacement of the expansion sleeve body cannot be interfered, and the fixed matching requirement between the internal expansion clamp and the tailstock of the machine tool is met. The whole design is ingenious, repeated clamping precision is ensured, product processing quality is improved, the rapid clamping device has the characteristic of rapid clamping, and working efficiency is greatly improved.
The above technical solutions of the present invention have been fully described, and it should be noted that the present invention is not limited by the above description, and all technical solutions formed by equivalent transformation or equivalent transformation adopted by the spirit of the present invention in the aspects of structure, method or function by those of ordinary skill in the art all fall within the protection scope of the present invention.
Claims (8)
1. Lathe tailstock hydraulic pressure internal expanding anchor clamps for it is fixed to carry out the internal expanding formula to the one end of tubular body, its characterized in that:
comprises a mandrel, one end of the mandrel is fixedly arranged on a tailstock of a machine tool, the other end of the mandrel is provided with an expansion sleeve body, the expansion sleeve body comprises an expansion core and an expansion sleeve, the free end of the mandrel is provided with a locking piece used for limiting the expansion core, the side wall of the expansion core is provided with a thrust ball bearing which is abutted against the locking piece, a needle bearing is arranged between the inner hole wall of the expansion core and the mandrel,
the mandrel is sleeved with an oil cylinder body with axial linear displacement, the oil cylinder body is provided with a driving end axially interfering with the expansion sleeve, and the driving end is provided with a driving end thrust ball bearing.
2. The hydraulic internal expanding clamp for the tailstock of the machine tool as claimed in claim 1, wherein:
the oil cylinder body comprises a cylinder base and a cylinder sleeve which are movably sleeved on the mandrel, an oil cavity is formed between the cylinder base and the cylinder sleeve, the cylinder base and the cylinder sleeve are detachably connected,
the mandrel is provided with a ring bulge matched and connected with the oil cavity, and the driving end thrust ball bearing is arranged at the free end of the cylinder sleeve.
3. The hydraulic internal expanding clamp for the tailstock of the machine tool as claimed in claim 2, wherein:
and the cylinder base is provided with an oil inlet and an oil outlet which are connected with an external oil source.
4. The hydraulic internal expanding clamp for the tailstock of the machine tool as claimed in claim 2, wherein:
and sealing elements are respectively arranged between the cylinder sleeve and the mandrel, between the cylinder base and the mandrel and between the annular protrusion and the oil cavity.
5. The hydraulic internal expanding clamp for the tailstock of the machine tool as claimed in claim 1, wherein:
and the mandrel is provided with a ring table for limiting the axial displacement of the needle bearing.
6. The hydraulic internal expanding clamp for the tailstock of the machine tool as claimed in claim 1, wherein:
and the expansion sleeve is provided with a plurality of flexible clamping rings which are axially arranged at intervals.
7. The hydraulic internal expanding clamp for the tailstock of the machine tool as claimed in claim 1, wherein:
the chuck is fixed to the other end of the tubular body, and is provided with a rotation drive source.
8. The hydraulic internal expanding clamp for the tailstock of a machine tool as claimed in claim 7, wherein:
the chuck is a three-jaw chuck used for clamping the inner pipeline of the tubular body in a radially outward stretching mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920878800.1U CN210359340U (en) | 2019-06-12 | 2019-06-12 | Hydraulic internal expanding clamp for tailstock of machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920878800.1U CN210359340U (en) | 2019-06-12 | 2019-06-12 | Hydraulic internal expanding clamp for tailstock of machine tool |
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| Publication Number | Publication Date |
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| CN210359340U true CN210359340U (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920878800.1U Active CN210359340U (en) | 2019-06-12 | 2019-06-12 | Hydraulic internal expanding clamp for tailstock of machine tool |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110193614A (en) * | 2019-06-12 | 2019-09-03 | 昆山奥玛泰机电设备有限公司 | The hydraulic internal expanding fixture of tailstock tool |
-
2019
- 2019-06-12 CN CN201920878800.1U patent/CN210359340U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110193614A (en) * | 2019-06-12 | 2019-09-03 | 昆山奥玛泰机电设备有限公司 | The hydraulic internal expanding fixture of tailstock tool |
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