CN220806289U - Be used for heavy vertical hollow static pressure workstation - Google Patents
Be used for heavy vertical hollow static pressure workstation Download PDFInfo
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- CN220806289U CN220806289U CN202322429491.9U CN202322429491U CN220806289U CN 220806289 U CN220806289 U CN 220806289U CN 202322429491 U CN202322429491 U CN 202322429491U CN 220806289 U CN220806289 U CN 220806289U
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- 230000003068 static effect Effects 0.000 title claims abstract description 16
- 239000003921 oil Substances 0.000 claims abstract description 27
- 230000002706 hydrostatic effect Effects 0.000 claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 239000012208 gear oil Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims 1
- 238000003801 milling Methods 0.000 abstract description 3
- 238000003754 machining Methods 0.000 description 4
- 238000010008 shearing Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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Abstract
The utility model discloses a heavy vertical hollow static pressure workbench, and belongs to the technical field of turning and milling numerical control machine tools. The working table surface is of a split combined annular structure, the center of the working table surface is kept hollow, and a turntable center supporting device arranged on a main shaft of a base of the working table is arranged at the hollow; the high-precision feeding mechanism drives a two-shaft through a gearbox, so that a gear ring below a working table surface is driven, the working table surface bears a workpiece to rotate, an inner upright post is arranged at the center of a base of the working table by a central supporting device of the turntable to keep static, a hydrostatic guideway and a detection protection mechanism are arranged between the base of the working table and the working table surface, the hydrostatic guideway adopts constant-current hydrostatic pressure, a high-precision gear pump supplies oil, a high-precision equivalent gear oil separator injects pressure oil into each oil cavity, an angle encoder is arranged at the center of the base of the working table, wires enter from a junction box of the working table, and the working table adopts a split-type hollow structure and belongs to a large-size and high-precision heavy-load working table.
Description
Technical Field
The utility model relates to a heavy vertical hollow static pressure workbench, and belongs to the technical field of turning and milling numerical control machine tools.
Background
The nuclear power basket body of the reactor inner member is core equipment of a nuclear reactor, is a supporting structure of a fuel rod and a control rod assembly in the reactor, and plays an important role in realizing nuclear safe operation of the reactor function. As large-scale thin wall component, the requirement of the interior component hanging basket barrel body of pile to the shaping precision is very high, and when the compound special numerical control lathe of current double column turning and milling installs and clamps and adds the processing, long-time continuous work can lead to oil film shearing to generate heat, influences workstation machining precision, and the bearing capacity of workstation is also limited simultaneously, can't further improve the machining precision of product.
Disclosure of utility model
In order to solve the defects in the prior art, the utility model provides a vertical hollow static pressure workbench for heavy duty, which adopts a split type hollow structure, belongs to a heavy-duty workbench with large size and high precision, can perform rough finishing on the inner wall and the outer wall of a cylinder body, prevents the track surface of the workbench from thermal deformation, and ensures that the workbench runs continuously and has unchanged precision.
The technical scheme adopted for solving the technical problems is as follows: a vertical hollow static pressure workbench for heavy duty comprises a gearbox, a biaxial, a high-precision feeding mechanism, a static pressure guide rail, a workbench base, a workbench surface and a workbench junction box, wherein the workbench surface is of a split combined annular structure, the workbench surface is flush with the ground, each module of the annular workbench is connected by a workbench connecting part, the center of the workbench is kept hollow, a turntable center supporting device arranged on a main shaft of the workbench base is arranged at the hollow, the high-precision feeding mechanism drives the biaxial through the gearbox, thereby driving a gear ring below the workbench surface to drive the workbench surface to bear a workpiece to rotate, the center of the workbench base is kept stationary by installing an inner upright post by the turntable center supporting device, the static pressure guide rail and a detection protection mechanism are arranged between the workbench base and the workbench surface, the static pressure guide rail adopts constant current static pressure, 24 oil cavities are formed by high-precision gear pumps, a high-precision equivalent gear oil distributor injects pressure oil into each oil cavity, an angle encoder is arranged at the center of the workbench base, and required wires enter by the workbench junction box.
Furthermore, the workbench base adopts a short main shaft structure, the workbench surface and the main shaft of the workbench base radially adopt high-precision radial adjustable gap double-row cylindrical roller bearings, the workbench surface adopts a heat symmetrical structure, and the heat deformation in the left and right directions is the same.
Further, the high-precision feeding mechanism adopts a double-drive structure transmission and is driven by two sets of alternating current servo spindle motors, the two sets of alternating current servo spindle motors are respectively connected with independent gearboxes, the biaxial driving workbench surface is enabled to realize the turning function and the indexing feeding function after the speed of the gearboxes is reduced, the angle encoder is arranged at the center of the workbench and is a circular grating angle encoder, the circular grating angle encoder enters from a workbench junction box, and full-closed loop control is realized in the operation process of the workbench.
Further, the detection protection mechanism is an oil film thickness measurement protection sensor on the hydrostatic guideway of the workbench, and the oil film thickness measurement protection sensor enters from the junction box of the workbench.
The beneficial effects of the utility model are as follows: the split type hollow structure is adopted, belongs to a heavy-load workbench with large size and high precision, and can process the inner wall of the nuclear power basket body of the inner-pile member.
The novel heat symmetry structure is adopted in the workstation, reduces hydrostatic guideway oil film and makes the workstation take place the heat altered shape because of continuous operation shearing generates heat, reduces the influence to machining precision, makes the workstation can long-time continuous operation, ensures machining efficiency, guarantee processing reliability.
The adoption of two sets of alternating current servo spindle motors can eliminate gear transmission gaps, high-precision indexing feeding is performed, and the angle encoder arranged in the center of the workbench can realize full-closed loop control on the working process of the workbench, so that the workbench can realize high-precision control in the working process.
Drawings
The utility model is further described below with reference to the drawings and the detailed description.
Fig. 1 is a side cross-sectional view of the present utility model.
Fig. 2 is a side view of the present utility model.
Fig. 3 is a top view of the base of the present utility model.
Reference numerals in the drawings:
1. The high-precision radial adjustable gap double-row cylindrical roller bearing comprises a gearbox, 2, two shafts, 3, an alternating current servo spindle motor, 4, a hydrostatic guideway, 5, a turntable center supporting device, 6, a workbench base, 7, a workbench surface, 8, a workbench junction box, 9, a workbench surface connecting part and 10.
Detailed Description
As shown in fig. 1-3, the split type high-precision heavy-duty workbench for the heavy vertical hollow static pressure workbench is specifically a split type high-precision heavy-duty workbench with large size, and mainly comprises a gearbox 1, a two-shaft 2, a high-precision feeding mechanism, a static pressure guide rail 4, a turntable central supporting device 5, a workbench base 6, a workbench surface 7 and a workbench junction box 8, wherein the workbench surface 7 is flush with the ground, the workbench surface 7 is of a split combined annular structure, each module of the annular workbench is connected by a workbench connecting part 9, the center part is kept hollow, the large-outer diameter structural characteristic is realized, the rigidity of the workbench surface 7 can be improved by the split type workbench surface design, the deformation of the workbench surface 7 is reduced, and the heavy-duty working condition can be borne.
The center hollow part of the working table 7 is provided with a turntable center supporting device 5 which is arranged on a main shaft of a working table base 6, the material is casting material, the center part of the working table base 6 is provided with an inner upright post by the turntable center supporting device 5 and is kept static for processing the inner surface of a nuclear power basket body of a reactor inner member, and a high-precision feeding mechanism drives a biaxial shaft 2 through a gearbox 1 so as to drive a gear ring below the working table 7, so that the working table 7 bears a workpiece to rotate. The hydrostatic guideway 4 and the detection protection mechanism are arranged between the workbench base 6 and the working table surface 7, the hydrostatic guideway 4 adopts constant-current hydrostatic pressure, 24 oil cavities are totally provided, the high-precision gear pump supplies oil, the high-precision equivalent gear oil distributor injects pressure oil into each oil cavity, the bearing stability of the workbench is improved, and the requirements of the designed oil film thickness and the end face precision are met. The angle encoder is installed at the center of the workbench base 6, required wires enter from the workbench junction box 8, the working process is controlled in a full closed loop mode, and a shutdown protection system is arranged to prevent the damage of the workbench hydrostatic guideway 4.
The workbench base 6 adopts a short main shaft structure, the radial direction of the main shafts of the workbench surface 7 and the workbench base 6 adopts a high-precision radial adjustable gap double-row cylindrical roller bearing 10, the axial bearing and rotation precision of the workbench are guaranteed, the workbench surface 7 adopts a heat symmetrical structure, the thermal deformation in the left and right directions is the same, the deformation of the workbench is reduced, the influence of work heating on the operation precision of the workbench is reduced, the heat generated by friction in the rotary shearing process of a hydrostatic guideway oil film of the workbench is reduced, the thermal deformation of the guide surface of the workbench is effectively prevented, and the continuous operation of the workbench is guaranteed without changing the precision.
The high-precision feeding mechanism adopts a double-drive structure transmission, is driven by two sets of alternating current servo spindle motors 3, the two sets of alternating current servo spindle motors 3 are respectively connected with independent gearboxes 1, and after the speed of the gearboxes 1 is reduced, the two shafts 2 drive the workbench surface 7 to realize the turning function and the indexing feeding function, and the double-alternating current servo spindle motors can eliminate tooth gaps during working, synchronously operate to perform turning, and perform indexing through master-slave operation.
The center of the workbench is provided with an angle encoder which is a circular grating angle encoder, the circular grating angle encoder enters from the workbench junction box 8, and the full-closed loop control is realized in the operation process of the workbench, so that the indexing feeding reliability is ensured.
The detection protection mechanism comprises an oil film thickness measuring protection sensor, the workbench hydrostatic guideway 4 is provided with the oil film thickness measuring protection sensor, the oil film thickness measuring protection sensor enters from the workbench junction box 8 and is used for sending a prompt signal when the oil film thickness is less than 0.04mm during shutdown or non-active shutdown, so that the workbench stops running and damage to the workbench hydrostatic guideway 4 is avoided.
When the workpiece is placed on the table surface 7, the rotary table surface 7 rotates, and the center is formed by the turntable center support device 5, the inner column and other parts and kept stationary, so that the inner processing is performed on the workpiece.
Claims (4)
1. The utility model provides a be used for heavy vertical hollow static pressure workstation, including gearbox (1), diaxon (2), high accuracy feed mechanism, hydrostatic guideway (4), workstation base (6), table surface (7) and workstation terminal box (8), table surface (7) and ground parallel and level, be equipped with hydrostatic guideway (4) between workstation base (6) and workstation face (7), high accuracy feed mechanism passes through gearbox (1) drive diaxon (2), thereby drive the ring gear under table surface (7), make table surface (7) bear the weight of the machined part and rotate, table surface (6) center installation angle encoder, required wire rod gets into by workstation terminal box (8), its characterized in that: the workbench surface (7) is of a split combined annular structure, each module of the annular workbench is combined by a workbench connecting part (9), the center of the workbench is kept hollow, a turntable center supporting device (5) arranged on a main shaft of a workbench base (6) is arranged at the hollow, an inner upright post is arranged at the center of the workbench base (6) by the turntable center supporting device (5) to keep static, the turntable workbench base (6) and the workbench surface (7) are provided with detection protection mechanisms, the hydrostatic guideway (4) adopts constant-current hydrostatic pressure, 24 oil cavities are formed in total, a high-precision gear pump supplies oil, and a high-precision equivalent gear oil distributor injects pressure oil into each oil cavity.
2. A hollow hydrostatic table for heavy duty vertical machines as set forth in claim 1, wherein: the workbench base (6) adopts a short main shaft structure, the radial direction of the main shafts of the workbench surface (7) and the workbench base (6) adopts a high-precision radial adjustable gap double-row cylindrical roller bearing (10), the workbench surface (7) adopts a heat symmetry structure, and the thermal deformation in the left direction and the thermal deformation in the right direction are the same.
3. A hollow hydrostatic table for heavy duty vertical machines as set forth in claim 1, wherein: the high-precision feeding mechanism adopts a double-drive structure transmission, is driven by two sets of alternating current servo spindle motors (3), the two sets of alternating current servo spindle motors (3) are respectively connected with independent gearboxes (1), and enable a two-shaft (2) to drive a workbench surface (7) to achieve turning functions and indexing feeding functions after the speed of the gearboxes (1) is reduced, and a circular grating angle encoder is arranged at the center of the workbench and enters from a workbench junction box (8), so that full-closed loop control is achieved in the operation process of the workbench.
4. A hollow hydrostatic table for heavy duty vertical machines as set forth in claim 1, wherein: the detection protection mechanism comprises an oil film thickness measuring protection sensor, the oil film thickness measuring protection sensor is arranged on the workbench hydrostatic guideway (4), and the oil film thickness measuring protection sensor enters from the workbench junction box (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322429491.9U CN220806289U (en) | 2023-09-07 | 2023-09-07 | Be used for heavy vertical hollow static pressure workstation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322429491.9U CN220806289U (en) | 2023-09-07 | 2023-09-07 | Be used for heavy vertical hollow static pressure workstation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220806289U true CN220806289U (en) | 2024-04-19 |
Family
ID=90705638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322429491.9U Active CN220806289U (en) | 2023-09-07 | 2023-09-07 | Be used for heavy vertical hollow static pressure workstation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220806289U (en) |
-
2023
- 2023-09-07 CN CN202322429491.9U patent/CN220806289U/en active Active
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