CN219402408U - Device for machining supporting hole of guide bearing of center body of lower frame - Google Patents
Device for machining supporting hole of guide bearing of center body of lower frame Download PDFInfo
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- CN219402408U CN219402408U CN202320557183.1U CN202320557183U CN219402408U CN 219402408 U CN219402408 U CN 219402408U CN 202320557183 U CN202320557183 U CN 202320557183U CN 219402408 U CN219402408 U CN 219402408U
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- boring
- hole
- machining
- lower frame
- guide bearing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The utility model relates to the technical field of hydraulic generator production and processing, and particularly discloses a device for processing a supporting hole of a guide bearing of a center body of a lower frame, wherein the supporting hole comprises a pin hole, a counter bore and a screw hole; the boring and milling device is characterized by comprising a base, a boring and milling power head, a radial sliding table and a cutter head assembly, wherein the base is arranged on the center body of the lower frame, the boring and milling power head is in sliding fit with the base and is close to or far away from a processing surface of a supporting hole, the radial sliding table is arranged on the base and is used for controlling the boring and milling power head to slide, and the cutter head assembly is arranged on the boring and milling power head and is used for processing the supporting hole. The utility model can effectively realize the processing of the supporting holes of the guide bearing, effectively ensure that the relative position relation of various holes meets the requirements, and improve the processing precision and the processing efficiency; the guide bearing support hole machining device is suitable for machining guide bearing support holes before assembling the machine frame in the power station field.
Description
Technical Field
The utility model relates to the technical field of hydraulic generator production and processing, in particular to a device for processing a supporting hole of a guide bearing of a center body of a lower frame.
Background
The lower guide bearing of the lower frame center body is arranged on an annular guide bearing supporting hole in the lower frame center body through a lower guide bearing seat, and is combined with the rotor lower guide slip ring to form a lower guide bearing, so that radial unbalanced force of a rotating part of a unit is born, the rotation axis of the rotating part is limited, and the lower guide bearing is a core component of a large-sized hydraulic generator part.
In the prior art, the size of the hydraulic generator is too large, the transportation condition is severely limited, and the center body of the lower frame cannot be transported after the assembly is completed; the center body of the lower frame of the large hydropower station needs to be assembled and welded on the site of the hydropower station, so that the supporting hole of the guide bearing also needs to be machined on the site.
The bearing support holes of the guide bearing of the center body of the lower frame of the large hydraulic generator are usually in dozens of groups and are uniformly distributed on the inner ring surface of the center body part of the lower frame, each group of mounting holes comprises a pin hole, a counter bore and screw holes, the pin hole is positioned in the center of the counter bore, and four screw holes are uniformly distributed on the circumference of the counter bore; however, when the support hole processing is performed on site in a power station, since there are no large-sized processing equipment and processing conditions when the support hole processing is performed in a factory; the difficulty of processing the support holes is increased, the processing precision and the processing efficiency are low, each hole is processed independently by adopting corresponding equipment, and the position relation of each hole position after processing is effectively ensured.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a device for machining the guide bearing supporting hole of the center body of the lower frame, which can effectively realize the machining of the guide bearing supporting hole, effectively ensure that the relative position relation of various holes meets the requirements and improve the machining precision and the machining efficiency; the guide bearing support hole machining device is suitable for machining guide bearing support holes before assembling the lower frame on the power station site.
The utility model solves the technical problems by adopting the following solution:
the device for machining the supporting hole of the guide bearing of the center body of the lower frame comprises a pin hole, a counter bore and a screw hole; the boring and milling device comprises a base, a boring and milling power head, a radial sliding table and a tool bit assembly, wherein the base is arranged on a center body of a lower frame, the boring and milling power head is in sliding fit with the base and is close to or far away from a processing surface of a supporting hole, the radial sliding table is arranged on the base and is used for controlling the boring and milling power head to slide, and the tool bit assembly is arranged on the boring and milling power head and is used for processing the supporting hole.
When the boring and milling tool is used, the base is arranged on the center body of the lower frame, the base is arranged on the radial sliding table, the boring and milling power head is arranged on the radial sliding table, and the boring and milling power head is arranged on the tool bit assembly; the boring and milling power head is controlled by the radial sliding table to move the tool bit assembly to act on the processing surface of the supporting hole near the processing surface of the supporting hole, so that the processing of the supporting hole on the processing surface of the supporting hole is realized.
The utility model can effectively realize the processing of the supporting hole under the condition of no special equipment and processing conditions; meanwhile, in the prior art, large-scale special equipment is adopted for processing the supporting holes, and the hydraulic generator is small in equipment, simple in structure, high in portability, and capable of being effectively applicable to the fact that the hydraulic generator is large enough in size and cannot be integrally transported, and the supporting holes are processed on site only when the hydraulic generator is assembled on site; the method has the advantages of avoiding the investment of the process processing on large equipment resources, reducing the manufacturing cost of the center body of the lower frame, improving the output capacity of the center body of the lower frame, along with simple structure, strong portability, high processing efficiency and the like;
in some possible embodiments, in order to effectively improve the precision of the processing of the support holes;
an indexing bottom plate is also arranged on the center body of the lower frame; the base is mounted on the indexing base plate.
In some possible embodiments, in order to effectively achieve effective connection of the boring and milling power head and the tool bit assembly; the boring and milling power head can effectively drive the tool bit assembly to process the supporting hole;
the boring and milling power head comprises a shell, a main shaft which is arranged in parallel with the moving direction of the radial sliding table and is rotatably arranged in the shell, and a motor which is arranged on the shell and is in transmission connection with the main shaft;
one end of the main shaft, which is close to the processing surface of the supporting hole, extends out of the shell and is connected with the cutter head assembly.
In some possible embodiments, to effectively achieve the connection of the spindle with the tool bit assembly; and ensuring the coaxiality of the tool bit assembly and the main shaft;
and a conical hole is formed in one side, close to the machining surface of the supporting hole, of the main shaft, and the conical hole and the main shaft are coaxially arranged.
In some possible embodiments, in order to ensure that the boring and milling power head can be effectively connected with a flat-turning disc and a multi-shaft drilling device;
the boring and milling power head further comprises a transition disc sleeved on the outer side of the main shaft and coaxially arranged.
In some possible embodiments, to effectively achieve machining of pin holes, counterbore and screw holes on the guide bearing;
the tool bit assembly comprises a drill bit or a boring cutter which is used for pin hole machining and is connected with the main shaft, a flat rotating disc which is used for counter bore machining and is connected with the main shaft head, and a multi-shaft drilling device which is used for screw hole machining and is connected with the main shaft.
In some possible embodiments, to effectively limit the flat disc fixation portion from following the spindle;
and a stop block for fixing the stop lever on the flat rotating disc fixing part is arranged on the transition disc.
In some of the possible embodiments of the present utility model,
and a U-shaped groove which is clamped with the stop block is formed in one side, far away from the machining surface close to the supporting hole, of the stop block.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model adopts the combination of the radial sliding table and the boring and milling power head and is matched with the flat rotating disc, the multi-shaft drilling device, the drill bit or the boring cutter, thus finishing the processing of the guide bearing supporting hole of the center body of the lower frame, avoiding the investment of the processing of the working procedure on large equipment resources, reducing the manufacturing cost of the center body of the lower frame, improving the output capacity of the center body of the lower frame, and having the advantages of simple structure, strong portability, high processing efficiency and the like;
the utility model has small size, can be detached and is portable and convenient; the method can be effectively applied to the condition that the supporting hole can be processed only on the electric field site; because the same main shaft is coaxially connected with the flat rotating disc, the multi-shaft drilling device, the drill bit or the boring cutter, the machining precision and efficiency of the guide bearing support hole of the lower frame center body in the power station site are greatly improved, and the relative position relationship of the pin hole, the counter bore and the screw hole can meet the assembly requirement after the machining is finished; and simultaneously, the assembly efficiency is improved.
Drawings
FIG. 1 is a schematic view of the structure of the utility model mounted on the center of the lower frame;
FIG. 2 is a schematic view of the structure of the tool bit assembly of the present utility model when it is a drill bit or boring tool;
FIG. 3 is a schematic view of the structure of the cutter head assembly of the present utility model in the form of a flat rotating disc;
FIG. 4 is a schematic view of a tool bit assembly of the present utility model in a multi-axis drilling apparatus;
FIG. 5 is a side view of the spindle and stop of the present utility model;
FIG. 6 is a schematic diagram of the connection of a boring and milling power head and a multi-axis drilling device in the present utility model;
wherein: 1. an indexing base plate; 2. a base; 3. a radial sliding table; 4. boring and milling a power head; 40. a main shaft; 41 transition disc; 42. a stop block; 421. a U-shaped groove; 43. a housing; 5. a lower frame; 51. a support hole machining surface; 10. a cutter head assembly; 6. a drill bit or boring tool; 7. a flat rotating disc; 71. a stop lever; 72. a counter bore boring cutter; 8. a multi-axis drilling device; 81. a screw hole drill bit.
Detailed Description
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. Reference to "first," "second," and similar terms in this application does not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. In the implementation of the present application, "and/or" describes an association relationship of an association object, which means that there may be three relationships, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In the description of the embodiments of the present application, unless otherwise indicated, the meaning of "a plurality" means two or more. For example, a plurality of positioning posts refers to two or more positioning posts. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The present utility model will be described in detail below.
The center body guide bearing supporting hole of the lower frame 5 comprises a group of pin holes, a group of counter bores and a plurality of groups of screw holes, wherein the pin holes are positioned in the center of the counter bores and are coaxially arranged with the counter bores, and the plurality of groups of screw holes are uniformly arranged along the circumferential direction of the counter bores; preferably, the screw holes are four groups.
As shown in fig. 1-6;
a device for machining a supporting hole of a guide bearing of a central body of a lower frame 5, wherein the supporting hole comprises a pin hole, a counter bore and a screw hole; the boring and milling device comprises a base 2, a boring and milling power head 4, a radial sliding table 3 and a tool bit assembly 10, wherein the base 2 is arranged on the center body of a lower frame 5, the boring and milling power head 4 is in sliding fit with the base 2 and is close to or far away from a supporting hole machining surface 51, the radial sliding table 3 is arranged on the base 2 and is used for controlling the boring and milling power head 4 to slide, and the tool bit assembly 10 is arranged on the boring and milling power head 4 and is used for supporting hole machining.
When in use, the base 2 is arranged on the central body of the lower frame 5, the base 2 is arranged on the radial sliding table 3, the boring and milling power head 4 is arranged on the radial sliding table 3, and the boring and milling power head 4 is arranged when the tool bit assembly 10 is arranged; the boring and milling power head 4 is controlled by the radial sliding table 3 to be close to the supporting hole machining surface 51 so as to drive the tool bit assembly 10 to act on the supporting hole machining surface 51, and therefore the supporting hole machining on the supporting hole machining surface 51 is achieved.
The radial sliding table 3 is an existing sliding table structure, and is installed on the base 2 for realizing linear motion of the boring and milling power head 4, and the boring and milling power head 4 is installed on the radial sliding table 3 for installing the tool bit assembly 10 to realize support hole drilling (reaming) on the support hole machining surface 51.
The utility model can effectively realize the processing of the supporting hole under the condition of no special equipment and processing conditions; meanwhile, in the prior art, large-scale special equipment is adopted for processing the supporting holes, and the hydraulic generator is small in equipment, simple in structure, high in portability, and capable of being effectively applicable to the fact that the hydraulic generator is large enough in size and cannot be integrally transported, and the supporting holes are processed on site only when the hydraulic generator is assembled on site; the investment of the working procedure on large equipment resources is avoided, the manufacturing cost of the center body of the lower frame 5 is reduced, the output capacity of the center body of the lower frame 5 is improved, and the processing device has the advantages of simple structure, strong portability, high processing efficiency and the like;
in some possible embodiments, in order to effectively improve the precision of the processing of the support holes;
an indexing bottom plate 1 is also arranged on the central body of the lower frame 5; the base 2 is mounted on the indexing base plate 1.
The indexing baseplate 1 is arranged on the central body of the lower frame 5, and the center alignment is realized by using the processed surface of the central body of the lower frame 5.
Preferably, the indexing base plate 1 comprises a base plate, a reference seat and an adjusting bolt; the reference seat is provided with a positioning reference, and the center of the bottom plate and the center of the center body of the lower frame 5 can be adjusted by an adjusting bolt.
A plurality of groups of mounting holes are formed in the upper surface of the bottom plate.
The base 2 is arranged on the indexing bottom plate 1, the height of the base 2 is matched with the supporting hole, and the position of the main shaft is effectively controlled through the height of the base 2. The base 2 is fixed through a plurality of groups of mounting holes so as to meet the processing of the supporting holes.
In some possible embodiments, in order to effectively achieve an effective connection of the boring and milling power head 4 with the tool bit assembly 10; the boring and milling power head 4 can effectively drive the tool bit assembly 10 to process the supporting hole;
the boring and milling power head 4 is an existing part, the boring and milling power head 4 is directly assembled on the radial sliding table 3, the axial direction of the main shaft 40 is consistent with the sliding direction of the radial sliding table 3 during assembly and is parallel to the sliding direction of the radial sliding table 3, the radial sliding table 3 controls the boring and milling power head 4 to move towards the machining surface of the support hole to control the depth of the machining hole, and the boring and milling power head 4 is in transmission fit with the tool bit assembly 10 to realize the machining of the support hole;
the boring and milling power head 4 comprises a shell 43, a main shaft 40 which is arranged in parallel with the moving direction of the radial sliding table 3 and is rotatably arranged in the shell 43, and a motor which is arranged on the shell 43 and is in transmission connection with the main shaft 40;
further, the main shaft 40 and the pin hole in the supporting hole are coaxially arranged;
one end of the spindle 40, which is close to the support hole machining surface 51, extends out of the housing 43 to be connected with the tool bit assembly 10.
The boring and milling power head 4 is arranged on the radial sliding table 3 through a shell 43, one end of the main shaft 40 is in transmission connection with a motor, the main shaft 40 is driven to rotate through the motor, and under the cooperation of the radial sliding table 3, the tool bit assembly 10 connected with the main shaft 40 is driven to process a supporting hole on the supporting hole processing surface 51.
In some possible embodiments, to effectively achieve connection of the spindle 40 with the tool bit assembly 10; and ensures coaxiality of the tool bit assembly 10 and the spindle 40;
the main shaft 40 is provided with a taper hole on one side close to the supporting hole processing surface 51, the taper hole is coaxially arranged with the main shaft 40, and the large end of the taper hole is arranged on one side close to the supporting hole processing surface.
The tool bit assembly 10 is provided with the frustum which is matched with the conical hole, so that the coaxiality of the tool bit assembly 10 and the main shaft 40 can be effectively guaranteed during installation, and the tool bit assembly 10 is driven to rotate.
In some possible embodiments, to further facilitate the connection of the flat disc 7 or the multi-axis drilling device 8 to the spindle 40;
as shown in fig. 3, 4, 5 and 6, the boring and milling power head further includes a transition disc 41 sleeved on the outer side of the main shaft 40 and coaxially arranged.
The transition disc 41 is sleeved on the outer side of the main shaft 40 and is fixedly connected with the shell 43, and a screw hole connected with the tool bit assembly 10 is formed in the transition disc 41; the present point of adopting the arrangement is that the spindle 40 can be conveniently connected with the flat rotating disc 7 or the multi-shaft drilling device 8 with different appearance sizes;
when the external dimensions of the tool bit assembly 10 are in accordance with the fit of the tool bit assembly directly with the end face of the spindle 40 adjacent to one end, the transition disc 41 is not required.
In some of the possible embodiments of the present utility model,
the tool bit assembly 10 includes a drill bit or boring tool 6 for pin hole machining and connected to a spindle 40, a flat rotating disc 7 for counter bore machining and connected to a spindle 40 head, and a multi-axis drilling device 8 for screw hole machining and connected to the spindle 40.
As shown in fig. 2, the pin holes are a group, and the drill bit or the boring cutter 6 is a group which is arranged corresponding to the pin holes, and the spindle 40 is driven by the motor to rotate around the axis of the spindle, so that the drill bit or the boring cutter 6 is driven to rotate; the pin holes are machined on the support hole machining surface 51 under the cooperation of the radial sliding table 3, and the drill bit or the boring cutter 6 is coaxially arranged with the main shaft 40 during installation, so that the machined pin holes are coaxially arranged with the main shaft 40.
As shown in fig. 4 and 6, the multi-axis drilling device 8 includes an outer casing, a central shaft mounted in the outer casing and having one end fitted with the tapered hole, a main gear integrally formed with the central shaft and coaxially provided, a plurality of sets of slave gears meshed with the main gear and provided along the circumferential direction of the main gear, connecting shafts provided in one-to-one correspondence with the slave gears and coaxially connected, and screw hole drills 81 mounted at one end of the connecting shafts near the support hole processing surface 51 and coaxially provided; the slave gear is positioned in the shell and sleeved on the connecting shaft, one end of the connecting shaft extends out of the shell and is in one-to-one correspondence with the screw holes, and the drill bit is coaxially connected with one end of the connecting shaft extending out of the shell.
One end of the central shaft is provided with a screw hole drill bit 81 which is matched with the conical hole and is installed on the frustum, coaxial transmission connection of the conical hole and the frustum is realized through the matching of the conical hole, the main shaft 40 rotates to drive the central shaft to rotate, the connecting shaft is driven to rotate through meshing transmission among gears, the screw hole drill bit 81 which is coaxially connected with the connecting shaft is driven to rotate, and screw hole machining is realized under the matching of the radial sliding table 3; and ensures that the pin holes are uniformly arranged along the circumferential direction of the counter bore.
When connected to the multi-axis drilling device via the transition disc 41, the outer housing will be connected to the end surface of the transition disc 41 adjacent to the support hole machining surface 51.
In some possible embodiments, in order to effectively limit the follow-up of the fixed part of the flat disc 7 with the spindle 40;
as shown in fig. 3 and 5, a stopper 42 for fixing a stopper 71 on a fixed portion of the flat disc 7 is provided on an end surface of the transition disc 41 or the spindle 40 near the support hole processing surface 51.
The flat rotary disk 7 is an existing device, and the flat rotary disk 7 is matched with the conical hole through the taper shank to realize the connection support of the flat rotary disk 7 and the boring and milling power head 4; the stop block 42 is arranged on the end surface of the main shaft 40 or the transition disc 41, which is close to the supporting hole processing surface 51, and is used for limiting a stop lever 71 on a fixed part of the flat rotating disc 7 to drive the fixed part of the flat rotating disc 7 to follow the main shaft 40, so that the main shaft 40 can only drive a counter bore boring cutter 72 of the flat rotating disc 7 to rotate; the counter bore boring cutter 72 of the flat rotary disk 7 is driven to rotate by the main shaft 40, counter bores coaxial with the pin holes are machined on the support hole machining surface 51 under the cooperation of the radial sliding table 3, and the inner diameters of the counter bores are controlled by the sliding distance of the counter bore boring cutter 72 along the radial direction of the counter bores.
In some possible embodiments, in order to effectively limit the occurrence of the follow-up of the fixed portion of the flat disc 7;
a U-shaped slot 411 which is clamped with the stop block 42 is arranged on one side of the stop block 42 far away from the processing surface 51 close to the supporting hole.
The utility model is not limited to the specific embodiments described above. The utility model extends to any novel one, or any novel combination, of the features disclosed in this specification, as well as to any novel one, or any novel combination, of the steps of the method or process disclosed.
Claims (8)
1. The device for machining the supporting hole of the guide bearing of the center body of the lower frame comprises a pin hole, a counter bore and a screw hole; the boring and milling device is characterized by comprising a base, a boring and milling power head, a radial sliding table and a cutter head assembly, wherein the base is arranged on the center body of the lower frame, the boring and milling power head is in sliding fit with the base and is close to or far away from a processing surface of a supporting hole, the radial sliding table is arranged on the base and is used for controlling the boring and milling power head to slide, and the cutter head assembly is arranged on the boring and milling power head and is used for processing the supporting hole.
2. The device for machining the guide bearing support hole of the central body of the lower frame according to claim 1, wherein an indexing base plate is further arranged on the central body of the lower frame; the base is mounted on the indexing base plate.
3. The device for machining the support hole of the guide bearing of the central body of the lower frame according to claim 1, wherein the boring and milling power head comprises a shell, a main shaft which is arranged in parallel with the moving direction of the radial sliding table and is rotatably arranged in the shell, and a motor which is arranged on the shell and is in transmission connection with the main shaft;
one end of the main shaft, which is close to the processing surface of the supporting hole, extends out of the shell and is connected with the cutter head assembly.
4. A device for machining a support hole of a guide bearing of a central body of a lower frame according to claim 3, wherein a conical hole is formed in one side of the main shaft, which is close to a machining surface of the support hole, and the conical hole is coaxially arranged with the main shaft.
5. The device for machining the support hole of the guide bearing of the center body of the lower frame according to claim 4, wherein the boring and milling power head further comprises a transition disc sleeved outside the main shaft and coaxially arranged.
6. The apparatus for machining a pilot bearing support hole of a center body of a lower frame according to claim 5, wherein the bit assembly includes a drill bit or boring tool for pin hole machining and connected to a main shaft, a flat rotating disc for counter bore machining and connected to a main shaft head, and a multi-axis drilling apparatus for screw hole machining and connected to the main shaft.
7. The apparatus for machining a support hole of a center body guide bearing of a lower housing according to claim 6, wherein a stopper for fixing a stopper on a fixed portion of a flat rotating disc is provided on the transition disc.
8. The device for machining the support hole of the guide bearing of the central body of the lower frame according to claim 7, wherein a U-shaped groove which is clamped with the stop block is arranged on one side of the stop block, which is far away from the machining surface close to the support hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320557183.1U CN219402408U (en) | 2023-03-21 | 2023-03-21 | Device for machining supporting hole of guide bearing of center body of lower frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320557183.1U CN219402408U (en) | 2023-03-21 | 2023-03-21 | Device for machining supporting hole of guide bearing of center body of lower frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219402408U true CN219402408U (en) | 2023-07-25 |
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ID=87231065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320557183.1U Active CN219402408U (en) | 2023-03-21 | 2023-03-21 | Device for machining supporting hole of guide bearing of center body of lower frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219402408U (en) |
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2023
- 2023-03-21 CN CN202320557183.1U patent/CN219402408U/en active Active
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