CN219598122U - Internal expansion type clamping tool device - Google Patents
Internal expansion type clamping tool device Download PDFInfo
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- CN219598122U CN219598122U CN202320319291.5U CN202320319291U CN219598122U CN 219598122 U CN219598122 U CN 219598122U CN 202320319291 U CN202320319291 U CN 202320319291U CN 219598122 U CN219598122 U CN 219598122U
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Abstract
The utility model relates to an internal expansion type clamping tool device which comprises a mandrel, wherein an expansion sleeve component is sleeved outside the mandrel, a piston component is arranged at one end of the expansion sleeve component, a shell component is movably connected to the outer side of the piston component, an oil control channel is arranged in the shell component, a through hole communicated with the shell component is formed in the oil control channel, an oil pressure connector communicated with the oil control channel is arranged on the shell component, a cylinder component is connected to the outer end of the shell component, and the contact end of the mandrel is connected with the cylinder component. Therefore, convenient automatic clamping can be realized, and clamping force can be adjusted conveniently according to oil pressure. The clamping mode of a model part is changed, different tensioning amplitude can be provided, and the requirements of processing the outer circle surface and the outer circle end face of processing parts with different inner hole diameters are met. The device has the advantages of simple integral structure, high clamping speed and low cost, and can meet the processing requirement of precision parts.
Description
Technical Field
The utility model relates to a tool device, in particular to an internal expansion type clamping tool device.
Background
When the five-axis machining center or the grinding machine is used for machining the outer circle, an inner hole or an end face is required to be positioned, a blank cap tool is usually manufactured, a tool matched with the inner hole is manufactured, and then the tool is clamped, so that the outer surface of a part is machined. Therefore, the inner diameters of different parts are different, each part needs a tool, the cost is high, the inner diameter of the tool needs to be matched with the inner hole of the part for grinding during clamping, the time consumption is long, the time for completing clamping each time is long, and the machining precision cannot be guaranteed.
For prior art CN201020649778.2, it provides a tight frock that rises, including tensioning axle, tensioning cover, O type circle, multiunit tensioning cover tightly tensioning axle, multiunit O type circle by multiunit tensioning cover compress tightly and overlap tensioning axle, tensioning axle one end be fixed with the stop device that prevents tensioning cover deviate from, another pot head has the baffle.
However, in practice, the degree of tension is not adjustable by locking, and only a workpiece of a suitable size can be positioned.
Meanwhile, in the prior art CN201220175470.8, a tensioning tool for the excircle of a finish turning dry cylinder liner is provided, the tensioning tool comprises a flange plate, a rigid taper shaft and a taper sleeve, wherein one end of the flange plate is connected with a machine tool, the rigid taper shaft is provided with a through inner hole along the central axial direction, the taper sleeve is sleeved outside the taper shaft and is made of spring steel material and in taper fit with the taper shaft, the inner hole of the taper shaft is provided with a pull rod, the front end of the pull rod is connected with an oil cylinder in a penetrating manner, the pull rod is propped against the inner side of the taper sleeve, the outer side of the front end of the pull rod is provided with a gasket and a locking nut, the taper shaft is provided with a positioning pin, and the corresponding position on the pull rod is provided with a transverse groove which is axially arranged.
However, the liquid-tightness is problematic, and the resetting is incomplete, which tends to cause seizure.
In view of the above-mentioned drawbacks, the present utility model provides an internal expanding type clamping tool device, which has more industrial utility value.
Disclosure of Invention
In order to solve the technical problems, the utility model aims to provide an internal expansion type clamping tool device.
The utility model relates to an internal expansion type clamping tool device, which comprises a mandrel, wherein: the mandrel is sleeved with an expansion sleeve assembly, one end of the expansion sleeve assembly is provided with a piston assembly, the outer side of the piston assembly is movably connected with a shell assembly, an oil control channel is arranged in the shell assembly, the oil control channel is provided with a through hole communicated with the shell assembly, an oil pressure connector communicated with the oil control channel is arranged on the shell assembly, the outer end of the shell assembly is connected with a cylinder assembly, and the contact end of the mandrel is connected with the cylinder assembly.
Further, in the internal expanding clamping tool device, the contact end of the mandrel is of a cylindrical structure, and the other end of the mandrel is of a conical structure.
Further, in the internal expanding clamping tool device, the contact end of the mandrel is connected with the cylinder body assembly through a screw; the shell component is connected with the cylinder component through screws.
Still further, the internal expanding clamping tool device, wherein the piston assembly is provided with a limiting boss, one end of the shell assembly is provided with a gear ring, and the gear ring is buckled on the limiting boss.
Further, in the internal expansion type clamping tool device, a main piston seal is arranged on the inner side of the piston assembly and is in contact with the mandrel, a secondary piston seal is arranged on the outer side of the piston assembly and is in contact with the shell assembly; the main piston seal and the auxiliary piston seal are sealing rings.
Further, in the internal expansion type clamping tool device, the cylinder assembly is of a concave structure, a main cylinder seal is arranged on the outer side of the front end of the concave structure, the main cylinder seal is in contact with the shell, a sub cylinder seal is arranged on the inner side of the front end of the concave structure, and the sub cylinder seal is in contact with the mandrel; the main cylinder body seal and the auxiliary cylinder body seal are sealing rings.
Still further, according to the internal expansion type clamping tool device, the oil control channel is communicated into a transverse T-shaped structure, a plug is arranged at the upper end of the transverse T-shaped structure at the position of the shell component, the lower end of the T-shaped structure is communicated with the mandrel, and oil pressure connectors are distributed at the tail end of the T-shaped structure.
Furthermore, in the internal expansion type clamping tool device, a plurality of gaps are distributed on the outer surface of the expansion sleeve assembly, and the gaps are distributed in a staggered mode.
Still further, the internal expanding clamping tool device is characterized in that an oil inlet seal is arranged in the oil pressure connector.
By means of the scheme, the utility model has at least the following advantages:
1. the automatic clamping device can realize convenient automatic clamping, and clamping force can be adjusted conveniently according to oil pressure.
2. The clamping mode of a model part is changed, different tensioning amplitude can be provided, and the requirements of processing the outer circle surface and the outer circle end face of processing parts with different inner hole diameters are met.
3. The device has the advantages of simple integral structure, high clamping speed and low cost, and can meet the processing requirement of precision parts.
The foregoing description is only an overview of the present utility model, and is intended to provide a better understanding of the present utility model, as it is embodied in the following description, with reference to the preferred embodiments of the present utility model and the accompanying drawings.
Drawings
Fig. 1 is a schematic view of a transverse cross section of an internal expanding type clamping fixture device.
Fig. 2 is a schematic view of a longitudinal section of the internal expanding type clamping fixture device.
Fig. 3 is a schematic structural view of the tension sleeve assembly.
The meaning of each reference numeral in the figures is as follows.
1. Machining part 2 mandrel
3. Expansion sleeve assembly 4 shell assembly
5. Oil cylinder seal 6 main piston seal
7. Auxiliary piston seal 8 main cylinder seal
9. Piston assembly 10 slave cylinder seal
11. Cylinder block assembly 12 plug
13. Oil-feeding seal 14 oil pressure joint
15. Gap of
Detailed Description
The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.
The internal expanding clamping fixture device shown in fig. 1 to 3 comprises a mandrel 2, which is characterized in that: the mandrel 2 is sleeved with an expansion sleeve assembly 3 for positioning the machined part 1. Meanwhile, in order to effectively control the advancing and retreating of the expansion sleeve component 3, locking and loosening of the processing part 1 are facilitated, a piston component 9 is arranged at one end of the expansion sleeve component 3, and a shell component 4 is movably connected to the outer side of the piston component 9. And, be provided with the accuse oil passageway in the casing subassembly 4, the accuse oil passageway is provided with the via hole that switches on with casing subassembly 4, is provided with the oil pressure joint 14 that switches on with accuse oil passageway on the casing subassembly 4. Thus, the subsequent oil pressure adjustment is facilitated. Further, in order to provide a preferable integral arrangement, a cylinder block 11 is connected to the outer end of the housing block 4 to constitute an oil cylinder. The contact end of the spindle 2 is connected to a cylinder assembly 11.
In order to effectively press the expansion sleeve component 3 and ensure that the expansion sleeve component is normally expanded and reset, the contact end of the mandrel 2 is in a cylindrical structure, and the other end of the mandrel is in a conical structure. In this way, the expansion sleeve assembly 3 is subjected to different tensioning forces when it moves, and is in an expanded state when it reaches the conical configuration position, thus achieving the locking of the machined part 1. When the expansion sleeve assembly 3 moves to the cylindrical structure, the expansion sleeve assembly is in a reset state, and separation of the machined parts 1 is facilitated.
Further, in order to meet the integration after the assembly is completed and reduce the assembly difficulty, the contact end of the mandrel 2 is connected with the cylinder assembly 11 through a screw, and the shell assembly 4 is connected with the cylinder assembly 11 through a screw. Meanwhile, in order to properly limit the piston assembly 9 on the premise of having proper movable travel and avoid improper loosening of the piston assembly from the shell assembly 4, a limit boss is arranged on the piston assembly 9, one end of the shell assembly 4 is provided with a gear ring, and the gear ring is buckled on the limit boss. And the joint of the two is distributed with an oil cylinder seal 5.
In connection with practical implementation, in order to fulfil an effective fluid-tight effect, avoiding leakage during use, the inner side of the piston assembly 9 is provided with a primary piston seal 6, the primary piston seal 6 being in contact with the spindle 2, the outer side of the piston assembly 9 is provided with a secondary piston seal 7, which is in contact with the housing assembly 4. Meanwhile, in order to further improve the sealing structure of the cylinder assembly 11, unnecessary leakage and residue are avoided while the hydraulic conduction and recovery are met, the adopted cylinder assembly 11 is of a concave structure, a main cylinder seal 8 is arranged on the outer side of the front end of the concave structure, and the main cylinder seal 8 is in contact with a shell. A sub cylinder seal 10 is provided inside the front end of the concave structure, and the sub cylinder seal 10 is in contact with the spindle 2. The primary piston seal 6, the secondary piston seal 7, the primary cylinder seal 8, and the secondary cylinder seal 10 are all sealing rings in view of convenience of implementation.
Still further, in order to achieve efficient oil path planning, it is convenient to shorten the unnecessary working stroke of the piston assembly 9, and the adopted oil control channel is conducted into a transverse T-shaped structure. Specifically, a plug 12 is arranged at the upper end of the transverse T-shaped structure at the shell component 4, the lower end of the T-shaped structure is communicated with the mandrel 2, and an oil pressure joint 14 is distributed at the tail end of the T-shaped structure. An oil feed seal 13 is provided in the hydraulic joint 14. In this way, an effective oil feed guiding can be achieved, oil backflow is avoided during operation of the piston assembly 9, and the fastening degree of positioning is further improved.
Meanwhile, in order to have a better deformation expansion effect, a plurality of gaps 15 are distributed on the outer surface of the expansion sleeve component 3, and the gaps 15 are distributed in a staggered manner. In particular, in this way, the gap 15 may be more easily expanded when pressed by the conical configuration. And the expansion range is larger, so that the clamping of parts in a larger range can be realized.
The working principle of the utility model is as follows:
the processing part 1 is sleeved on the expansion sleeve assembly 3, and under the action of the oil cylinder, the expansion sleeve assembly 3 moves leftwards along the mandrel 2 to reach the conical structure. Therefore, the expansion sleeve assembly 3 receives internal expansion force, the diameter of the expansion sleeve assembly is increased, the inner hole of the machined part 1 is expanded, and the machining and positioning of the machined part 1 are completed. During this time, the outer circle and the left end face of the machined part 1 can be machined and the left end inner hole can be aligned.
After the processing is finished, the oil pressure in the oil cylinder is reduced, the piston assembly 9 is retracted and reset, the expansion sleeve assembly 3 is reset, and the processed part 1 can be easily removed. If both ends need to be machined, the machined part 1 can be transposed at this time, and the machined end can be inserted toward the expansion sleeve assembly 3 to start a new round of fastening and positioning.
As can be seen from the above text expressions and the accompanying drawings, the utility model has the following advantages:
1. the automatic clamping device can realize convenient automatic clamping, and clamping force can be adjusted conveniently according to oil pressure.
2. The clamping mode of a model part is changed, different tensioning amplitude can be provided, and the requirements of the outer circle surface processing and the outer circle end surface processing of the processing part 1 with different inner hole diameters are met.
3. The device has the advantages of simple integral structure, high clamping speed and low cost, and can meet the processing requirement of precision parts.
Furthermore, the description of the present utility model as to the orientation or positional relationship is based on the orientation or positional relationship shown in the drawings is for convenience of description and simplification of the description only, and is not intended to indicate or imply that the apparatus or configuration referred to must have a specific orientation or be operated in a specific orientation configuration, and thus should not be construed as limiting the present utility model.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and it should be noted that it is possible for those skilled in the art to make several improvements and modifications without departing from the technical principle of the present utility model, and these improvements and modifications should also be regarded as the protection scope of the present utility model.
Claims (9)
1. Internal expanding type clamping tool device, including dabber, its characterized in that: the mandrel is sleeved with an expansion sleeve assembly, one end of the expansion sleeve assembly is provided with a piston assembly, the outer side of the piston assembly is movably connected with a shell assembly, an oil control channel is arranged in the shell assembly, the oil control channel is provided with a through hole communicated with the shell assembly, an oil pressure connector communicated with the oil control channel is arranged on the shell assembly, the outer end of the shell assembly is connected with a cylinder assembly, and the contact end of the mandrel is connected with the cylinder assembly.
2. The internal expanding clamp tooling device of claim 1, wherein: the contact end of the mandrel is of a cylindrical structure, and the other end of the mandrel is of a conical structure.
3. The internal expanding clamp tooling device of claim 1, wherein: the contact end of the mandrel is connected with the cylinder body assembly through a screw; the shell component is connected with the cylinder component through screws.
4. The internal expanding clamp tooling device of claim 1, wherein: the piston assembly is provided with a limiting boss, one end of the shell assembly is provided with a gear ring, and the gear ring is buckled on the limiting boss.
5. The internal expanding clamp tooling device of claim 1, wherein: the inner side of the piston assembly is provided with a main piston seal, the main piston seal is contacted with the mandrel, the outer side of the piston assembly is provided with a secondary piston seal, and the piston seal is contacted with the shell assembly; the main piston seal and the auxiliary piston seal are sealing rings.
6. The internal expanding clamp tooling device of claim 1, wherein: the cylinder body assembly is of a concave structure, a main cylinder body seal is arranged on the outer side of the front end of the concave structure and is in contact with the shell, a secondary cylinder body seal is arranged on the inner side of the front end of the concave structure and is in contact with the mandrel; the main cylinder body seal and the auxiliary cylinder body seal are sealing rings.
7. The internal expanding clamp tooling device of claim 1, wherein: the oil control channel is communicated into a transverse T-shaped structure, a plug is arranged at the upper end of the transverse T-shaped structure at the position of the shell component, the lower end of the T-shaped structure is communicated with the mandrel, and oil pressure connectors are distributed at the tail end of the T-shaped structure.
8. The internal expanding clamp tooling device of claim 1, wherein: the outer surface of the expansion sleeve component is provided with a plurality of gaps, and the gaps are distributed in a staggered manner.
9. The internal expanding clamp tooling device of claim 1, wherein: and an oil inlet seal is arranged in the oil pressure connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320319291.5U CN219598122U (en) | 2023-02-27 | 2023-02-27 | Internal expansion type clamping tool device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320319291.5U CN219598122U (en) | 2023-02-27 | 2023-02-27 | Internal expansion type clamping tool device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219598122U true CN219598122U (en) | 2023-08-29 |
Family
ID=87744379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320319291.5U Active CN219598122U (en) | 2023-02-27 | 2023-02-27 | Internal expansion type clamping tool device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219598122U (en) |
-
2023
- 2023-02-27 CN CN202320319291.5U patent/CN219598122U/en active Active
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