CN116494114A - Surface finishing tool and method for flow channel of pump housing with blades - Google Patents
Surface finishing tool and method for flow channel of pump housing with blades Download PDFInfo
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- CN116494114A CN116494114A CN202310463641.XA CN202310463641A CN116494114A CN 116494114 A CN116494114 A CN 116494114A CN 202310463641 A CN202310463641 A CN 202310463641A CN 116494114 A CN116494114 A CN 116494114A
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- processing module
- pump housing
- abrasive
- hole
- cover plate
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000005111 flow chemistry technique Methods 0.000 claims abstract description 24
- 238000003754 machining Methods 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 18
- 230000000903 blocking effect Effects 0.000 claims 1
- 239000003082 abrasive agent Substances 0.000 description 7
- 238000005498 polishing Methods 0.000 description 6
- 230000003746 surface roughness Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000005422 blasting Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/10—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work
- B24B31/116—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work using plastically deformable grinding compound, moved relatively to the workpiece under the influence of pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B57/00—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents
- B24B57/02—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents for feeding of fluid, sprayed, pulverised, or liquefied grinding, polishing or lapping agents
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rotary Pumps (AREA)
Abstract
The invention discloses a surface finishing tool for a flow channel of a pump housing with a blade, which comprises an upper cover plate, a lower cover plate, a supporting ring, a first processing module and a second processing module; the upper cover plate, the lower cover plate and the supporting ring enclose an annular cavity for accommodating the pump housing; the upper cover plate is provided with a first through hole, and the abrasive enters the upper abrasive cylinder from the annular cavity through the first through hole or enters the annular cavity from the upper abrasive cylinder through the first through hole; the lower cover plate is provided with a second through hole; the first processing module is used for being arranged at the second through hole during the first abrasive flow processing and comprises an annular structure and an arc-shaped boss connected to the inner wall of the annular structure; the second processing module is used for being installed at the second through hole in the second abrasive flow processing process and is of an annular structure. The invention also discloses a finishing method realized by adopting the tool, which realizes the step-by-step finishing processing of the pump housing with the blade by using the first processing module and the second processing module respectively, thereby effectively improving the processing quality.
Description
Technical Field
The invention belongs to the technical field of finishing processing of metal parts, and particularly relates to a finishing tool and a finishing method for abrasive particle flow processing on the surface of a runner of a pump housing with a blade.
Background
The pump shell with the blades is a key part of a turbine pump in an engine, and has extremely high requirements on the surface roughness of the blades and the vortex path. Because the laser selective melting production is adopted, the surface roughness of the blade and the vortex path is poor, and the use requirement cannot be met, so that further finishing is required.
The traditional surface finishing method comprises sand blowing, shot blasting, manual/mechanical polishing and the like, the surface roughness requirements cannot be met, sand blown by sand and shot blasting cannot reach the back surface of the blade and the inside of the vortex path, and the blade is easily damaged by hard contact of a manual/mechanical polishing tool, so that high-quality finishing cannot be realized.
Disclosure of Invention
The invention aims to overcome the defects, and provides a tool and a method for polishing the surface of a runner of a pump housing with a blade, which solve the technical problem that the conventional means cannot realize laser selective melting forming of a vortex channel of the pump housing with the blade and polishing of the surface of the blade.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a surface finishing tool for a runner of a pump housing with a blade comprises an upper cover plate, a lower cover plate, a supporting ring, a first processing module and a second processing module;
the upper cover plate is supported above the lower cover plate by a support ring, and the upper cover plate, the lower cover plate and the support ring enclose an annular cavity for accommodating the pump housing;
the upper cover plate is provided with a first through hole, and the abrasive enters the upper abrasive cylinder from the annular cavity through the first through hole or enters the annular cavity from the upper abrasive cylinder through the first through hole;
the lower cover plate is provided with a second through hole;
the first processing module is used for being arranged at the second through hole during the first abrasive flow processing and comprises an annular structure and an arc-shaped boss connected to the inner wall of the annular structure, and the central angle corresponding to the arc-shaped boss is 120-240 degrees; the annular structure is matched with the flange end face of the pump housing, and the arc-shaped boss is matched with an annular groove provided with blades in the pump housing, so that the plugging of part of the blades is realized; during the first abrasive particle flow processing, the abrasive sequentially passes through the second through hole, the inside of the first processing module and the blade of which the pump shell is not plugged from the lower abrasive cylinder to enter the inside of the pump shell, or sequentially passes through the blade of which the pump shell is not plugged, the inside of the first processing module and the second through hole from the inside of the pump shell to enter the lower abrasive cylinder;
the second processing module is used for being arranged at the second through hole in the second abrasive flow processing process and is of an annular structure, and the second processing module is matched with the flange end face of the pump housing; during the second abrasive particle flow processing, the abrasive sequentially passes through the second through hole, the inside of the second processing module and the blade of the pump shell from the lower abrasive cylinder to enter the inside of the pump shell, or sequentially passes through the blade of the pump shell, the inside of the second processing module and the second through hole from the inside of the pump shell to enter the lower abrasive cylinder. The center pillar of the pump housing is higher than the flange surface, so the flange surface is required to be heightened by the second processing module, otherwise, the first module is dismounted after being used, the center pillar is inserted into the eccentric hole of the lower cover plate, and the pump housing cannot be pressed and fixed in the axial direction, so that the axial limiting cannot be realized.
Further, the central angle corresponding to the arc-shaped boss in the first processing module is 180 degrees.
Further, in the first processing module, the height of the arc-shaped boss is higher than that of the annular structure; the height difference between the arc-shaped boss and the annular structure is equal to the height difference between the flange end face of the pump housing and the blade.
Further, when the first processing module or the second processing module is mounted at the second through hole, the lower end of the center pillar is flush with the upper end of the second through hole or the lower end of the center pillar is located inside the second through hole.
Further, the annular structure in the first processing module is a combination of two independent semicircular structures, and the arc-shaped boss is connected to the inner wall of one of the semicircular structures;
when the first processing module is arranged at the second through hole, the two semicircular structures are mutually abutted, and the two semicircular structures are combined into an annular structure.
Further, in the lower cover plate, an annular sinking step is arranged at the outer side of the second through hole, and when the first processing module or the second processing module is arranged at the second through hole, the first processing module or the second processing module is matched with the sinking step, namely, the outer side surface (cylindrical surface) of the first processing module or the second processing module is matched with the inner side surface of the sinking step, so that radial limit of the first processing module or the second processing module is realized;
when the abrasive particle flow is processed for the first time, the upper end face of the annular structure in the first processing module is matched with the flange end face of the pump housing, the lower end face is matched with the bottom of a sinking step arranged on the lower cover plate, the upper cover plate is matched with the upper end of the pump housing, and the axial limit of the pump housing is realized by utilizing the upper cover plate and the lower cover plate;
during the second abrasive particle stream processing, the upper end face of the second processing module is matched with the flange end face of the pump housing, the lower end face is matched with the bottom of a sinking step arranged on the lower cover plate, the upper cover plate is matched with the upper end of the pump housing, and the axial limit of the pump housing is realized by the upper cover plate and the lower cover plate.
Further, in the first processing module, the inner diameter of the annular structure is equal to the outer diameter of the annular groove in the pump housing, and the width of the arc-shaped boss is equal to the width of the annular groove in the pump housing;
the second machining module has an inner diameter equal to the outer diameter of the annular groove in the pump housing.
The second through hole is an eccentric hole.
The surface finishing method for the flow channel of the pump shell with the blade is realized by adopting the surface finishing tool for the flow channel of the pump shell with the blade, and comprises the following steps:
first abrasive flow machining:
s1.1, a first processing module is arranged at a second through hole, an annular structure in the first processing module is matched with the flange end face of a pump shell, an arc-shaped boss is matched with an annular groove provided with a blade in the pump shell, and therefore plugging of part of the blade is achieved;
s1.2, enabling the abrasive to reciprocate among an upper abrasive cylinder, a tool and a lower abrasive cylinder, and finishing the surfaces of other flow passages except the blocked blades;
s1.3, enabling the first processing module to rotate by a preset angle, and repeatedly executing the step S1.2;
s1.4, repeatedly executing the step S1.3 until all the blades are finished;
second abrasive flow machining:
s2.1, removing the first processing module, and installing a second processing module at the second through hole to enable the second processing module to be matched with the flange end face of the pump housing;
s2.2, enabling the abrasive to reciprocate among the upper abrasive cylinder, the tool and the lower abrasive cylinder, and finishing the surface of the flow channel of the pump housing again.
Further, in step S1.2, the path of the abrasive reciprocating motion is:
the lower grinding cylinder, the second through hole, the blade of which the inside of the first processing module is not blocked by the pump shell, the inside of the pump shell, the conical outlet of the pump shell, the other space outside the pump shell in the annular cavity, the first through hole and the upper grinding cylinder;
in step S2.2, the path of the abrasive reciprocating motion is:
the lower grinding cylinder, the second through hole, the inside of the second processing module, the vane of the pump housing, the inside of the pump housing, the conical outlet of the pump housing, the other space outside the pump housing in the annular cavity, the first through hole and the upper grinding cylinder.
Further, the central angle corresponding to the arc-shaped boss in the first processing module is 180 degrees;
s1.3, rotating the first processing module by 90 degrees, and repeatedly executing the step S1.2;
s1.4, repeatedly executing the step S1.3, and enabling the first processing module to rotate for 4 times, so that all blades are finished.
Further, the processing parameters of the first abrasive flow processing are as follows: the processing pressure is 2-4MPa, the processing times (one round trip of processing the abrasive material is included) are 3-5 times, and the abrasive material amount is 700-800 cm for each processing 3 The method comprises the steps of carrying out a first treatment on the surface of the The first processing module processes 3-5 times when rotating for one position;
the processing parameters of the second abrasive flow processing are as follows: the processing pressure is 2-4MPa, the processing times are 12-15 times, and the abrasive quantity is 700-800 cm for each processing 3 。
Compared with the prior art, the invention has at least one of the following beneficial effects:
(1) The invention creatively provides a special tool for abrasive particle flow, and by using the tool, the effective finishing of inner cavity flow channels and blades is realized by adopting different processing parameters and a step-by-step processing method, and the processing quality of products is effectively improved;
(2) According to the invention, the first processing module with the arc-shaped boss is arranged, so that the grinding material is forced to pass through the arranged channel for processing, and the polishing effect is better and more uniform;
(3) According to the invention, the first processing module is rotated for the first time, and the second processing module is utilized for the second processing, so that the rotating joint mark caused by the first processing module is effectively eliminated, and a product with higher glossiness can be obtained;
(4) The first processing module and the second processing module are simple in structure and easy to process, and the first processing module is designed into the two semicircular splicing structures, so that the process difficulty is further reduced, and the large-scale application is facilitated.
Drawings
FIG. 1 is a schematic view of a bladed pump housing; wherein (a) is a perspective view and (b) is a top view;
FIG. 2 is a schematic view of a finishing tool for a flow passage surface of a pump housing with a blade according to the present invention;
FIG. 3 is a schematic structural view of the finishing tool for the surface of the flow channel of the pump housing with the blade in the second processing;
FIG. 4 is a schematic view of the construction of a first process module and a second process module of the present invention; wherein, (a) is a first processing module and (b) is a second processing module;
FIG. 5 is a schematic view of the first process module of the present invention mated with a pump housing; wherein (a) is a top view and (b) is a perspective view;
in the figure, the upper cover plate, the lower cover plate, the 3-supporting ring, the 4-first processing module, the 5-second processing module, the 6-conical outlet, the 7-flange end face, the 8-bladed pump housing, the 11-first through hole and the 21-second through hole are arranged.
Detailed Description
The features and advantages of the present invention will become more apparent and clear from the following detailed description of the invention.
The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The conical outlet and the blade gap of the pump housing are used as a reciprocating processing inlet and outlet for abrasive flow processing, and due to the influence of the pump housing structure, the abrasive flows into the inlet, turns 90 degrees and flows out from the outlet. Since the abrasive always flows as a fluid along the path of the shortest path, the blade and vortex path close to the cone outlet have a relatively good finishing effect and the finishing effect far from the cone outlet is poor if not blocked.
The invention provides a surface finishing tool for a flow channel of a pump housing with a blade, which comprises a universal part and a replaceable part, wherein the universal part comprises an upper cover plate, a supporting ring and a lower cover plate, the upper cover plate is provided with a hole for processing an abrasive material to enter and exit, the lower cover plate is provided with an eccentric hole, and the eccentric hole is matched and installed with the flange end face of the pump housing through a first or a second module.
The first processing module consists of two semicircular rings which are matched with the positions and the sizes of the blades of the pump shell, the outer diameters of the two semicircular rings are kept consistent, the inner diameter of one semicircular ring is provided with a boss, and the height difference of the boss and the semicircular ring is consistent with the depth of an annular groove of the pump shell; the first processing module is suitable for the size of the eccentric hole of the lower cover plate and is installed on the eccentric Kong Weizhi, the two semicircular rings of the first processing module are tightly matched (without connection) to form a whole circle to be matched with the flange end face of the pump housing, and the semicircular rings can completely seal the semicircular blades of the pump housing, so that abrasive materials only pass through the other semicircular rings.
The second processing module is a circular ring which is suitable for the position and the size of the blades of the pump housing.
The upper end surface of the eccentric hole (the second through hole) is provided with a sinking step (also can be regarded as an annular groove), the height of the sinking step is preferably 1-5 mm, and the outer diameters of the two processing modules are matched with the diameter of the sinking step (slightly smaller than the diameter of the sinking step), so that the radial leaning step limit can be ensured. The axial direction is matched with the flange end face of the pump housing and is in a compressed state, so that the axial direction can be ensured.
Based on the tooling, the invention provides a surface finishing method for a flow channel of a pump housing with a blade, which comprises the following steps:
step one: and adopting a general part of the tool and a first processing module to process the abrasive particle flow for the first time.
Step two: and adopting a general part of the tool and a second processing module to process the abrasive particle flow for the second time.
In the first step, the general part of the tool is matched with the first processing module, and then abrasive flow processing is carried out on the blade.
As only half circle of blades are processed in each processing, the joint of the two semicircles of the first processing module is provided with the joint of abrasive particle flow processing, so that the joint can be eliminated while efficiency is considered, the two semicircles simultaneously rotate by 90 degrees, and the abrasive particle flow processing is performed again. When the fourth rotation of the 90 ° abrasive stream is processed, the process is complete.
In the first step, the abrasive particle flow processing parameters are as follows: the processing pressure is 2-4MPa, the processing times are 3-5 times, and the abrasive amount is 750cm for each processing 3 。
In the second step, finishing machining of the vortex channel of the pump shell can be achieved after the universal tool is matched with the second machining module, and the matching method of the second machining module and the universal part is the same as that of the first machining module. The purpose is to smooth and eliminate the processing joints of the blades after 4 times of processing in the first step, and to make the finishing processing of all the blades and the vortex paths more uniform.
The abrasive particle flow processing parameters in the second step are as follows: the processing pressure is 3.0MPa, the processing times are 12-15 times, and the abrasive amount is 750cm for each processing 3 。
Examples:
as shown in figure 1, the vane pump housing is formed by a laser selective melting forming method, vanes of the vane pump housing are distributed along the whole circle of the vortex of the pump housing, the vortex of the pump housing forms a tapered outlet with a flange, the surface roughness of the flow passage of the vane pump housing is poor, and the surface of an inner cavity is polished by adopting abrasive flow processing. The first and second process modules of the present invention are structured as shown in fig. 4.
As shown in fig. 2, (1) the bladed pump housing is mated with a tooling universal section, a first tooling module 4. Wherein the lower cover plate 2 is placed on the abrasive flow processing equipment, and the first processing module 4, the pump housing, the support ring 3 and the upper cover plate 1 are sequentially installed, as shown in fig. 5, the first processing module 4 is matched with the flange end face 7 of the pump housing. Setting processing pressure to 2-4MPa, processing times to 3-5 times, and processing abrasive material amount to 750cm each time 3 . During machining, the abrasive material flows in from the position of the unblocked blade matched with the pump housing by the first machining module 4, flows out from the position of the conical outlet 6 (conical flange) of the pump housing, and performs reciprocating cycle machining. After one processing, the first processing module 4 keeps the relative position with the universal part unchanged, and rotates 90 degrees around the center of the circle (other angles can be also rotated), and abrasive flow processing is performed again.
When the fourth rotation of the 90 ° abrasive stream is processed, the process is complete.
As shown in fig. 3, (2) the first processing module 4 is taken out, the pump housing with the blade is matched with the general part of the tool and the second processing module 5 again, wherein the lower cover plate 2 is placed on abrasive flow processing equipment, the second processing module 5, the pump housing, the supporting ring 3 and the upper cover plate 1 are sequentially installed, the second processing module 5 is matched with the flange end face 7 of the pump housing, the processing pressure is set to 3.0MPa, the processing times are 12-15, and the abrasive amount is 750cm each time 3 . During processing, abrasive material flows in from all blade positions of the pump shell and is conical from the pump shellThe flange flows out and is processed in a reciprocating cycle, and the second processing module 5 does not limit the flow of the abrasive in different parts, so that rotation is not needed.
The surface roughness Ra value of the blade part of the pump shell obtained by the tool and the method can be reduced from 8 mu m to 1.6 mu m, the roughness of other runner parts can be reduced from 8 mu m to Ra3.2-6.3 mu m, and the uniform polishing of the surfaces of all parts of the runner can be realized.
The invention has been described in detail in connection with the specific embodiments and exemplary examples thereof, but such description is not to be construed as limiting the invention. It will be understood by those skilled in the art that various equivalent substitutions, modifications or improvements may be made to the technical solution of the present invention and its embodiments without departing from the spirit and scope of the present invention, and these fall within the scope of the present invention. The scope of the invention is defined by the appended claims.
What is not described in detail in the present specification is a well known technology to those skilled in the art.
Claims (10)
1. The surface finishing tool for the flow channel of the pump shell with the blades is characterized by comprising an upper cover plate (1), a lower cover plate (2), a supporting ring (3), a first processing module (4) and a second processing module (5);
the upper cover plate (1) is supported above the lower cover plate (2) by utilizing a support ring (3), and the upper cover plate (1), the lower cover plate (2) and the support ring (3) enclose an annular cavity for accommodating the pump housing;
the upper cover plate (1) is provided with a first through hole (11), and the abrasive enters the upper abrasive cylinder from the annular cavity through the first through hole (11) or enters the annular cavity from the upper abrasive cylinder through the first through hole (11);
the lower cover plate (2) is provided with a second through hole (21);
the first processing module (4) is used for being arranged at the second through hole (21) during the first abrasive particle flow processing and comprises an annular structure and an arc-shaped boss connected to the inner wall of the annular structure, and the central angle corresponding to the arc-shaped boss is 120-240 degrees; the annular structure is matched with the flange end face of the pump housing, and the arc-shaped boss is matched with an annular groove provided with blades in the pump housing, so that the plugging of part of the blades is realized; during the first abrasive particle flow processing, the abrasive sequentially passes through the second through hole (21), the inside of the first processing module (4) and the blade of which the pump shell is not plugged into the pump shell from the lower abrasive cylinder, or sequentially passes through the blade of which the pump shell is not plugged, the inside of the first processing module (4) and the second through hole (21) from the inside of the pump shell into the lower abrasive cylinder;
the second processing module (5) is arranged at the second through hole (21) during the second abrasive particle flow processing, is of an annular structure, and is matched with the flange end face of the pump housing (5); during the second abrasive particle flow processing, the abrasive sequentially passes through the second through hole (21), the inside of the second processing module (5) and the blade of the pump shell from the lower abrasive cylinder to enter the inside of the pump shell, or sequentially passes through the blade of the pump shell, the inside of the second processing module (5) and the second through hole (21) from the inside of the pump shell to enter the lower abrasive cylinder.
2. A bladed pump housing flow channel surface finishing tool according to claim 1, characterized in that the arc-shaped boss in the first machining module (4) corresponds to a central angle of 180 °.
3. The surface finishing tool for the flow channel of the pump housing with the blades according to claim 1, wherein in the first processing module (4), the height of the arc-shaped boss is higher than that of the annular structure; the height difference between the arc-shaped boss and the annular structure is equal to the height difference between the flange end face of the pump housing and the blade.
4. The surface finishing tool for the runner of the pump housing with the blades according to claim 2, wherein the annular structure in the first processing module (4) is a combination of two independent semicircular structures, and the arc-shaped boss is connected to the inner wall of one of the semicircular structures;
when the first processing module (4) is arranged at the second through hole (21), the two semicircular structures are mutually abutted, and the two semicircular structures are combined into an annular structure.
5. The surface finishing tool for the flow channel of the pump shell with the blade according to claim 1 is characterized in that an annular sinking step is arranged on the outer side of the second through hole (21) in the lower cover plate (2), and when the first processing module (4) or the second processing module (5) is installed at the second through hole (21), the first processing module (4) or the second processing module (5) is matched with the sinking step to realize radial limit of the first processing module (4) or the second processing module (5);
when abrasive particle flow machining is performed for the first time, the upper end face of the annular structure in the first machining module (4) is matched with the flange end face of the pump housing, the lower end face is matched with the bottom of a sinking step arranged on the lower cover plate (2), the upper cover plate (1) is matched with the upper end of the pump housing, and axial limiting of the pump housing is achieved through the upper cover plate (1) and the lower cover plate (2);
during secondary abrasive particle flow machining, the upper end face of the second machining module (5) is matched with the flange end face of the pump housing, the lower end face is matched with the bottom of a sinking step arranged on the lower cover plate (2), the upper cover plate (1) is matched with the upper end of the pump housing, and axial limiting of the pump housing is achieved through the upper cover plate (1) and the lower cover plate (2).
6. The surface finishing tool for the flow channel of the pump housing with the blades according to claim 1, wherein in the first processing module (4), the inner diameter of the annular structure is equal to the outer diameter of the annular groove in the pump housing, and the width of the arc-shaped boss is equal to the width of the annular groove in the pump housing;
the inner diameter of the second processing module (5) is equal to the outer diameter of the annular groove in the pump housing.
The second through hole (21) is an eccentric hole.
7. A method for finishing the surface of a flow channel of a pump housing with a blade, which is characterized in that the method is realized by adopting the finishing tool for the surface of the flow channel of the pump housing with the blade according to any one of claims 1 to 6, and comprises the following steps:
first abrasive flow machining:
s1.1, a first processing module (4) is arranged at a second through hole (21), an annular structure in the first processing module (4) is matched with the flange end face of a pump shell, and an arc-shaped boss is matched with an annular groove provided with a blade in the pump shell to realize the blocking of part of the blade;
s1.2, enabling the abrasive to reciprocate among an upper abrasive cylinder, a tool and a lower abrasive cylinder, and finishing the surfaces of other flow passages except the blocked blades;
s1.3, enabling the first processing module (4) to rotate by a preset angle, and repeatedly executing the step S1.2;
s1.4, repeatedly executing the step S1.3 until all the blades are finished;
second abrasive flow machining:
s2.1, removing the first processing module (4), and installing the second processing module (5) at the second through hole (21) to enable the second processing module (5) to be matched with the flange end face of the pump housing;
s2.2, enabling the abrasive to reciprocate among the upper abrasive cylinder, the tool and the lower abrasive cylinder, and finishing the surface of the flow channel of the pump housing again.
8. The method of claim 7, wherein in step S1.2, the path of the abrasive reciprocating motion is:
the lower grinding cylinder, the second through hole (21), the blade of which the inside of the first processing module (4) is not blocked, the inside of the pump housing, the conical outlet of the pump housing, the other space outside the pump housing in the annular cavity, the first through hole (11), and the upper grinding cylinder;
in step S2.2, the path of the abrasive reciprocating motion is:
the lower grinding cylinder, the second through hole (21), the inside of the second processing module (5), the vane of the pump housing, the inside of the pump housing, the conical outlet of the pump housing, the space outside the pump housing in the annular cavity, the first through hole (11), and the upper grinding cylinder.
9. The method for finishing the surface of the flow channel of the pump housing with the blades according to claim 7, wherein the central angle corresponding to the arc-shaped boss in the first processing module (4) is 180 degrees;
s1.3, rotating the first processing module (4) by 90 degrees, and repeatedly executing the step S1.2;
s1.4 repeatedly executing the step S1.3, and enabling the first processing module (4) to rotate for 4 times, so that all the blades are finished.
10. The method of claim 7, wherein the first abrasive flow machining parameters are: the processing pressure is 2-4MPa, the processing times are 3-5 times, and the abrasive quantity is 700-800 cm for each processing 3 ；
The processing parameters of the second abrasive flow processing are as follows: the processing pressure is 2-4MPa, the processing times are 12-15 times, and the abrasive quantity is 700-800 cm for each processing 3 。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310463641.XA CN116494114A (en) | 2023-04-26 | 2023-04-26 | Surface finishing tool and method for flow channel of pump housing with blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310463641.XA CN116494114A (en) | 2023-04-26 | 2023-04-26 | Surface finishing tool and method for flow channel of pump housing with blades |
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| CN116494114A true CN116494114A (en) | 2023-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310463641.XA Pending CN116494114A (en) | 2023-04-26 | 2023-04-26 | Surface finishing tool and method for flow channel of pump housing with blades |
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| Country | Link |
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| CN (1) | CN116494114A (en) |
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