CN115625367B - Impeller finish milling fixing tool - Google Patents
Impeller finish milling fixing tool Download PDFInfo
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- CN115625367B CN115625367B CN202211560392.8A CN202211560392A CN115625367B CN 115625367 B CN115625367 B CN 115625367B CN 202211560392 A CN202211560392 A CN 202211560392A CN 115625367 B CN115625367 B CN 115625367B
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- push rod
- rod
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- driving source
- hydraulic push
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C9/00—Details or accessories so far as specially adapted to milling machines or cutter
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
- B23Q3/082—Work-clamping means other than mechanically-actuated hydraulically actuated
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a fine milling and fixing tool for an impeller, which comprises a fixed shaft arranged on a milling machine, wherein a reference surface is arranged on one side of the fixed shaft, which is far away from the milling machine, the fixed shaft is provided with an expansion mechanism which is arranged in an impeller hub in a penetrating way and supported in the impeller hub during processing and fixing, the fixed shaft is provided with first pressing mechanisms positioned at two ends of the expansion mechanism, the reference surface is provided with a second pressing mechanism at one side close to the fixed shaft, the first pressing mechanism and the second pressing mechanism are matched with each other to press the impeller tightly, and the expansion mechanism, the first pressing mechanism and the second pressing mechanism are respectively connected with a first driving source, a second driving source and a third driving source which are used for driving the three to work respectively. The invention has the beneficial effects that: the impeller is fixedly clamped, and the machining device can directly machine the front and back surfaces of the blade.
Description
Technical Field
The invention relates to the technical field of impeller machining, in particular to a fine milling and fixing tool for an impeller.
Background
Tooling, namely process equipment: the tool is a general abbreviation of tools used in the manufacturing process, and some tools are process devices which are used for rapidly fastening workpieces during processing and keeping the machine tool, the tool and the workpieces at correct relative positions, and are also called tool clamps which are parts which are not necessary to be lacked during machining.
The impeller requires machining, such as finish machining, polishing machining, etc., of the blade portion of the impeller in the production process. In the existing impeller blade processing, an impeller hub is firstly pressed and fixed on a milling machine, and then corresponding processing is carried out. In the prior art, only one side of the impeller, which is far away from the milling machine, can be directly processed, and one side of the impeller, which is close to the milling machine, cannot be processed. After the single face of the impeller is machined, the other face of the impeller needs to be reversely rotated again to clamp and fix the impeller, and machining efficiency is affected. And because the impeller is installed twice, the clamping position of the impeller can be changed, so that the problems of poor machining precision and the like are caused.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a fine milling and fixing tool for an impeller so as to solve the existing problems.
The purpose of the invention is realized by the following technical scheme: the utility model provides a fixed frock of impeller finish milling, is including setting up the fixed axle on the milling machine, the fixed axle is kept away from milling machine one side and is provided with the reference surface, wear to establish when being provided with processing on the fixed axle in impeller wheel hub and the expansion mechanism of shore in impeller wheel hub, be provided with on the fixed axle and be located expansion mechanism both ends, first hold-down mechanism, the reference surface is close to fixed axle one side and is provided with second hold-down mechanism, first hold-down mechanism and second hold-down mechanism mutually support and can compress tightly the impeller, be connected with first driving source, second driving source and the third driving source that is used for driving the three difference work on expansion mechanism, first hold-down mechanism and the second hold-down mechanism respectively.
Expanding mechanism establishes the round platform type slider on the fixed axle including the sliding sleeve, slider one end cross-section radius is less than other end cross-section radius, the slider lateral wall slides and is provided with two at least shoring pieces, the shoring piece is close to fixed axle one side and is the inclined plane, be provided with on the fixed axle with shoring piece position matching, and be the vertically slide bar with the fixed axle, shoring piece slidable mounting is on the slide bar, first driving source is for being used for promoting the gliding first push rod of slider on the fixed axle.
First hold-down mechanism and second hold-down mechanism all include the sliding sleeve, sliding sleeve on the first hold-down mechanism is located on the fixed axle, sliding sleeve week side can be dismantled and is connected with the briquetting that is used for compressing tightly wheel hub, the briquetting is at least one, second driving source, third driving source are second push rod and third push rod respectively.
Four telescopic links are arranged on the periphery of the sliding sleeve, and the pressing block is detachably mounted at the end of one end of the telescopic link far away from the sliding sleeve.
The telescopic link includes preceding pole and back pole, the internal thread has evenly been seted up to the back pole inner wall, preceding pole outer wall evenly be provided with internal thread assorted external screw thread, preceding pole threaded connection cover is located on the back pole, the back pole end is kept away from to the preceding pole is provided with the thread connection groove, briquetting one side be provided with thread connection groove assorted thread connection post.
The hydraulic pump is characterized by further comprising a hydraulic pump, the first driving source, the second driving source and the third driving source are respectively a first hydraulic push rod, a second hydraulic push rod and a third hydraulic push rod, a two-position four-way solenoid valve is arranged among the hydraulic pump, the first hydraulic push rod, the second hydraulic push rod and the third hydraulic push rod, an oil outlet of the hydraulic pump is connected with an oil inlet of the two-position four-way solenoid valve, a first oil inlet and an oil outlet of the two-position four-way solenoid valve are connected with a main path hydraulic pipe, the main path hydraulic pipe is communicated with a rodless cavity of the first hydraulic push rod through a first branch hydraulic pipe, the main path hydraulic pipe is communicated with rodless cavities of the second hydraulic push rod and the third hydraulic push rod through a second branch hydraulic pipe, a sequence valve is arranged on the second branch hydraulic pipe, and rod cavities of the first hydraulic push rod, the second hydraulic push rod and the third hydraulic push rod are respectively communicated with a second oil inlet and an oil outlet of the two-position four-way solenoid valve through an oil return pipe; during injection, a first oil inlet and outlet of the two-position four-way electromagnetic valve is used as an oil outlet, and a second oil inlet and outlet is used as an oil return port; and during pressure relief, the two-position four-way electromagnetic valve and a second oil inlet and outlet are used as oil outlets, and a first oil inlet and outlet is used as an oil return port.
The invention has the beneficial effects that:
(1) The expanding mechanism props up the impeller hub, and the pressing mechanisms at the two ends of the impeller hub are matched with each other to press the impeller hub tightly, so that the impeller is clamped and fixed. The front and back surfaces of the blade on the impeller are free from blocking, and the machining device can directly machine the front and back surfaces of the blade.
(2) The expanding mechanism is of a sliding block and propping piece structure, can prop and fix impeller hubs with different calibers, and always ensures that the impeller is positioned at the central position when fixed, so that the expanding mechanism has strong applicability.
(3) The first pressing machine and the second pressing mechanism are sliding sleeves and pressing blocks detachably connected with the sliding sleeves, and can clamp and fix impeller hubs with different calibers, so that the applicability is high.
(4) Through arranging the hydraulic pump, the sequence valve and the two-position four-way electromagnetic valve to be communicated with the first driving source, the second driving source and the third driving source, the expanding mechanism can be sequentially driven to firstly prop and fix the impeller hub, and then the pressing mechanisms at the two sides of the impeller are driven to clamp and fix the impeller hub, because the second driving source and the third driving source are both arranged in the same oil way, when the pressing mechanism at one end of the impeller is abutted to the impeller hub, at the moment, the liquid flow does not drive the pressing mechanism to continue to advance, only the pressing mechanism at the other end is driven to abut against the impeller hub, the two sides reach a pressure balance state, and pressurization is continued, so that the two sides of the hub are clamped by balanced pressure, the position is slightly changed in the pressing process of the impeller hub, the impeller hub cannot generate corresponding deformation, and the impeller machining precision is guaranteed.
Drawings
FIG. 1 is a cross-sectional view showing a connection of example 1 of the present invention (a briquette is not shown);
FIG. 2 is a schematic view of an oil passage according to embodiment 1 of the present invention;
FIG. 3 is a top view of the expansion mechanism;
FIG. 4 is a top view of a pressing mechanism (press block not shown) in example 2 of the present invention;
FIG. 5 is a front view of the press block;
FIG. 6 is a top view of the telescoping rod;
in the figure, 1-a fixed shaft, 2-an expansion mechanism, 21-a sliding block, 22-a top support piece, 23-a bevel, 24-a sliding rod, 3-a first pressing mechanism, 31-a second pressing mechanism, 32-a sliding sleeve, 33-a telescopic rod, 34-a front rod, 35-a rear rod, 36-a threaded connecting groove, 37-a threaded connecting rod, 38-a pressing block, 4-a hydraulic pump, 5-a first hydraulic push rod, 6-a second hydraulic push rod, 7-a third hydraulic push rod, an 8-sequence valve, 9-a two-position four-way electromagnetic valve and 10-a main road hydraulic pipe.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
In the following description, the terms "left", "right", "upper", "lower", "front", "rear", "inner" and "outer" are relative to each other, and are not listed here.
An impeller finish milling fixing tool, which is referred to as a figure 1, comprises a fixing shaft 1 arranged on a milling machine. The fixed shaft 1 is provided with a first pressing mechanism 3 and an expanding mechanism 2 from left to right in sequence. The right side of the fixed shaft 1 is provided with a reference surface, and one side of the reference surface, which is close to the fixed shaft 1, is provided with a second pressing mechanism 31. The first pressing mechanism 3 is identical in structure to the second pressing mechanism 31.
Referring to fig. 3, the expanding mechanism 2 includes a slider 21 slidably mounted on the outer wall of the fixed shaft 1. The periphery of the slide block 21 is respectively connected with a top support piece 22 in a left-right sliding way. The side of the top support 22 close to the slide block 21 is a slope 23. The fixed shaft 1 is provided with a sliding rod 24 corresponding to the position of the top support 22. The top support 22 is connected with the sliding rod 24 in a sliding way up and down. For those skilled in the art, the number of the top struts 22 may be two, three, etc., four being the most preferred, and four being used in this embodiment.
The first pressing mechanism 3 comprises a sliding sleeve 32 sleeved on the fixed shaft 1. The circumference of the sliding sleeve 32 is detachably connected with a pressing block 38. In this embodiment, four connecting rods are uniformly arranged around the sliding sleeve 32, and the pressing block 38 is detachably connected to the ends of the connecting rods. For those skilled in the art, the number of the connecting rods may be one, two, three, etc., and may be designed according to actual needs.
The milling machine is provided with a first driving source for pushing the sliding block 21 to slide on the fixed shaft 1 and a second driving source for pushing the first pressing mechanism 3 to slide on the fixed shaft 1. A third driving source for pushing the second pressing mechanism 31 to be close to or away from the fixed shaft 1 is provided on the reference surface. The first driving source, the second driving source, and the third driving source may be a first push rod, a second push rod, and a third push rod, respectively. The first push rod, the second push rod and the third push rod are respectively provided with a corresponding driving motor for driving the first push rod, the second push rod and the third push rod to extend and contract. But adopt the fixed impeller of this scheme structure, because be the drive source respectively, hardly guarantee the symmetry synchronization of second drive source, third drive source, can appear the stroke inconsistent and lead to the unbalanced problem of pressure about the impeller in first hold-down structure 3 and the fixed in-process of second hold-down mechanism 31 centre gripping, cause the impeller position to take place to squint about easily, even because the unbalanced impeller wheel hub that leads to of clamp force or produce corresponding deformation, cause the processing to appear the error, the inaccurate problem of precision.
Referring to fig. 2, in the present embodiment, the first driving source, the second driving source, and the third driving source are a first hydraulic push rod 5, a second hydraulic push rod 6, and a third hydraulic push rod 7, respectively. The right end of the fixed shaft 1 is provided with a base, and the third hydraulic push rod 7 is arranged on the base. The second hydraulic push rod 6 is a hollow cylindrical column and is sleeved outside the fixed shaft 1. The hydraulic pump 4 is communicated with a first hydraulic push rod 5, a second hydraulic push rod 6 and a third hydraulic push rod 7. A two-position four-way electromagnetic valve 9 and a sequence valve 8 are arranged between the hydraulic pump 4 and the first hydraulic push rod 5, between the second hydraulic push rod 6 and between the third hydraulic push rod 7. An oil outlet of the hydraulic pump 4 is connected with an oil inlet of a two-position four-way solenoid valve 9, a first oil inlet and an oil outlet of the two-position four-way solenoid valve 9 are connected with a main path hydraulic pipe 10, the main path hydraulic pipe 10 is communicated with a rodless cavity of a first hydraulic push rod 5 through a first branch hydraulic pipe, the main path hydraulic pipe 10 is communicated with rodless cavities of a second hydraulic push rod 6 and a third hydraulic push rod 7 through a second branch hydraulic pipe, a sequence valve 8 is arranged on the second branch hydraulic pipe, and rod cavities of the first hydraulic push rod 5, the second hydraulic push rod 6 and the third hydraulic push rod 7 are respectively communicated with a second oil inlet and an oil outlet of the two-position two-way solenoid valve 9 through an oil return pipe; during injection, a first oil inlet and outlet of the two-position four-way solenoid valve 9 is used as an oil outlet, and a second oil inlet and outlet is used as an oil return port; during pressure relief, a second oil inlet and outlet of the two-position four-way solenoid valve 9 is used as an oil outlet, and a first oil inlet and outlet is used as an oil return port. The two-position four-way solenoid valve 9 comprises a first working state and a second working state, when the two-position four-way solenoid valve 9 is switched to the first working state, for injection, the push rods of the first hydraulic push rod 5, the second hydraulic push rod 6 and the third hydraulic push rod 7 are extended outwards, and when the second working valve of the two-position four-way solenoid valve 9 is switched, the push rods of the first hydraulic push rod 5, the second hydraulic push rod 6 and the third hydraulic push rod 7 are all shortened inwards for pressure relief. The setting of the sequence valve 8 ensures that the hydraulic pump 4 preferentially supplies oil to the first hydraulic push rod 5, when the abutting force borne by the expansion mechanism 2 is greater than the pressure set by the sequence valve 8, the sequence valve 8 is communicated, and the hydraulic pump 4 supplies oil to the second hydraulic push rod 6 and the third hydraulic push rod 7 when the first hydraulic push rod 5 is in an oil retaining state.
When the impeller needs to be fixed, an operator sleeves the impeller on the fixed shaft 1, the expansion mechanism 2 is positioned in the hub of the impeller, the impeller is adjusted to a position to be fixedly clamped, and the pressing block 38 matched with the hub of the impeller to be processed in size is detachably mounted on the sliding sleeve 32. The hydraulic pump 4 is started, and the two-position four-way electromagnetic valve 9 is a first working valve at the moment. The hydraulic pump 4 supplies oil to the rodless cavity of the first hydraulic push rod 5, the first hydraulic push rod 5 pushes the sliding block 21 to move from left to right, and the top support piece 22 is propped open towards the direction away from the fixed shaft 1 until the top support piece 22 is propped against the inner wall of the hub. At this time, the impeller is in the center and continues to be pressurized, so that the top support member 22 is tightly pressed against the inner wall of the hub. The propping force borne by the propping piece 22 is greater than the pressure set by the sequence valve, the sequence valve 8 is communicated, the first hydraulic push rod 5 is in an oil retaining state, and the hydraulic pump 4 supplies oil to the rodless cavities of the second hydraulic push rod 6 and the third hydraulic push rod 7. The second hydraulic push rod 6 and the third hydraulic push rod 7 respectively push the sliding sleeves 32 on the left and right sides to move oppositely on the fixed shaft 1.
Because the second hydraulic push rod 6 and the third hydraulic push rod 7 are in fluid communication with the same hydraulic pipeline, when the pressing block 38 on one side pushes against one side of the hub, if the pressing block 38 on the other side does not push against the hub (in an empty state), one side pushing against the hub is subjected to resistance, the resistance on the empty side is small, pressurization is continued, oil can flow to the empty side with small pressure, in the process, the pressing block 38 which has pushed against the side of the hub keeps in a state, the pressing block 38 on the other side continuously extends towards the hub until the two pressing blocks 38 push against the hub, the two sides reach a pressure balance state, pressurization is continued, the two sides of the hub are clamped by balanced pressure, the hydraulic pump 4 stops working, and the whole oil circuit is in a pressure maintaining state.
In the whole process, the pressing force applied to the two sides of the hub is dynamic balance all the time, the hub cannot be subjected to direction-finding stress, the problem that the impeller is deformed or transversely misplaced due to the fact that the impeller is subjected to the direction-finding stress in the fixing process can be solved, the clamping and positioning precision is high, and the impeller is not prone to stress deformation. Moreover, based on the special fixing principle of the present application, no matter the impeller is in any position in the transverse direction, even if not the central position, the first pressing mechanism 3 and the second pressing mechanism 31 of the present application can also fix the impeller.
Further improvements of the present invention can be further extended to provide various novel embodiments according to the above-described embodiments.
As a second embodiment of the present invention, on the basis of embodiment 1, referring to fig. 4-6, four telescopic rods 33 are uniformly arranged on the outer wall of the sliding sleeve 32. The end of the telescopic rod 33 far away from the sliding sleeve 32 is provided with a threaded connecting groove 36. The pressing block 38 is provided with a threaded column matched with the threaded connecting groove 36. The pressing block 38 is mounted on the telescopic rod 33 by screw thread. For those skilled in the art, the telescopic rod 33 may be an electrically driven telescopic rod or the like. This embodiment telescopic link 33 structure includes preceding pole 34 and back pole 35, and the internal thread has evenly been seted up to back pole 35 inner wall, and the 34 outer walls of preceding pole evenly are provided with internal thread assorted external screw thread, and preceding pole 34 threaded connection cover is located on back pole 35. The pressing block 38 matched with the impeller hub in size does not need to be found, and the telescopic rod 33 only needs to be adjusted to a proper position. Of course, the pressing block 38 may be fixedly disposed on the telescopic rod 33.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and is not to be construed as limited to the exclusion of other embodiments, and that various other combinations, modifications, and environments may be used and modifications may be made within the scope of the concepts described herein, either by the above teachings or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (1)
1. The impeller finish milling fixing tool comprises a fixing shaft (1) arranged on a milling machine, wherein a reference surface is arranged on one side, away from the milling machine, of the fixing shaft (1), and is characterized in that an expansion mechanism (2) which is arranged in an impeller hub in a penetrating mode and supported in the impeller hub during machining and fixing is arranged on the fixing shaft (1), a first pressing mechanism (3) located at the left end of the expansion mechanism (2) is arranged on the fixing shaft (1), a second pressing mechanism (31) is arranged on one side, close to the fixing shaft (1), of the reference surface, the first pressing mechanism (3) and the second pressing mechanism (31) are matched with each other to press the impeller hub, and a first driving source, a second driving source and a third driving source which are used for driving the expansion mechanism (2), the first pressing mechanism (3) and the second pressing mechanism (31) to work respectively are connected to the expansion mechanism (2), the second pressing mechanism (3) and the second pressing mechanism (31) respectively;
the expansion mechanism (2) comprises a circular table type sliding block (21) which is arranged on the fixed shaft (1) in a sliding manner, the section radius of one end of the sliding block (21) is smaller than that of the other end of the sliding block (21), at least two supporting pieces (22) are arranged on the side wall of the sliding block (21) in a sliding manner, an inclined plane (23) is arranged on one side, close to the fixed shaft (1), of each supporting piece (22), a sliding rod (24) which is matched with the positions of the supporting pieces (22) and is perpendicular to the fixed shaft (1) is arranged on the fixed shaft (1), the supporting pieces (22) are installed on the sliding rod (24) in a sliding manner, and the first driving source is a first push rod used for pushing the sliding block (21) to slide on the fixed shaft (1);
the first pressing mechanism (3) and the second pressing mechanism (31) both comprise sliding sleeves (32), the sliding sleeves (32) on the first pressing mechanism (3) are arranged on the fixed shaft (1) in a sliding manner, pressing blocks (38) used for pressing the wheel hub are detachably connected to the peripheral sides of the sliding sleeves (32), at least one pressing block (38) is arranged, and the second driving source and the third driving source are respectively a second push rod and a third push rod;
four telescopic rods (33) are arranged on the peripheral side of the sliding sleeve (32), and the pressing block (38) is detachably mounted at the end head of one end, far away from the sliding sleeve (32), of each telescopic rod (33);
the telescopic rod (33) comprises a front rod (34) and a rear rod (35), internal threads are uniformly formed in the inner wall of the rear rod (35), external threads matched with the internal threads are uniformly formed in the outer wall of the front rod (34), the front rod (34) is in threaded connection with the rear rod (35), a threaded connection groove (36) is formed in the end, far away from the rear rod (35), of the front rod (34), and a threaded connection column (37) matched with the threaded connection groove (36) is arranged on one side of the pressing block (38);
the hydraulic pump is characterized by further comprising a hydraulic pump (4), the first driving source, the second driving source and the third driving source are respectively a first hydraulic push rod (5), a second hydraulic push rod (6) and a third hydraulic push rod (7), a two-position four-way solenoid valve (9) is arranged among the hydraulic pump (4), the first hydraulic push rod (5), the second hydraulic push rod (6) and the third hydraulic push rod (7), an oil outlet of the hydraulic pump (4) is connected with an oil inlet of the two-position four-way solenoid valve (9), a first oil inlet and outlet of the two-position four-way solenoid valve (9) is connected with a main path hydraulic pipe (10), the main path hydraulic pipe (10) is communicated with a rodless cavity of the first hydraulic push rod (5) through a first branch hydraulic pipe, the main path hydraulic pipe (10) is communicated with rodless cavities of the second hydraulic push rod (6) and the third hydraulic push rod (7) through a second branch hydraulic pipe, a sequence valve (8) is arranged on the second branch hydraulic pipe, and oil inlet and outlet of the first hydraulic push rod (5), the second hydraulic push rod (6) and the third hydraulic push rod (7) are respectively communicated with an oil return port of the second four-way solenoid valve (9); during pressure injection, a first oil inlet and outlet of the two-position four-way electromagnetic valve (9) is used as an oil outlet, and a second oil inlet and outlet is used as an oil return port; during pressure relief, the second oil inlet and outlet of the two-position four-way electromagnetic valve (9) are used as oil outlets, and the first oil inlet and outlet are used as oil return ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211560392.8A CN115625367B (en) | 2022-12-07 | 2022-12-07 | Impeller finish milling fixing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211560392.8A CN115625367B (en) | 2022-12-07 | 2022-12-07 | Impeller finish milling fixing tool |
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| Publication Number | Publication Date |
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| CN115625367A CN115625367A (en) | 2023-01-20 |
| CN115625367B true CN115625367B (en) | 2023-03-14 |
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| CN202211560392.8A Active CN115625367B (en) | 2022-12-07 | 2022-12-07 | Impeller finish milling fixing tool |
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2022
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