CN112658593B - Method for machining vacuum pump shell - Google Patents
Method for machining vacuum pump shell Download PDFInfo
- Publication number
- CN112658593B CN112658593B CN202011147561.6A CN202011147561A CN112658593B CN 112658593 B CN112658593 B CN 112658593B CN 202011147561 A CN202011147561 A CN 202011147561A CN 112658593 B CN112658593 B CN 112658593B
- Authority
- CN
- China
- Prior art keywords
- pump body
- blank
- machining
- face
- processing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Non-Positive Displacement Air Blowers (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention provides a method for processing a vacuum pump shell, which belongs to the technical field of processing of vacuum pump bodies and comprises the following steps: casting a pump body blank, blank sizing, pump body rough turning, semi-finish turning, numerical milling turning and finish turning. According to the method for machining the vacuum pump shell, the shape of the pump body blank is corrected by using the correction die and the pressure equipment before the pump body blank is machined, so that the deformation size of the pump body blank during casting can be prevented from being overlarge, the machining precision of the pump body machining is improved, and the reserved machining amount of the pump body during casting can be reduced, so that the time required for machining the pump body blank in place is shortened, the machining efficiency of the pump body is greatly improved, the machining tolerance of the inner side end face of the pump body and the upper molding surface of the inner side end face after machining is achieved is-0.02 to +0.02, the tolerance of an inner hole is 0 to-0.01 mm, and the parallelism and the perpendicularity of all machining faces are 0.02 to 0.04 mm.
Description
Technical Field
The invention belongs to the technical field of vacuum pump body processing, and particularly relates to a vacuum pump shell processing method.
Background
The vacuum pump refers to a device or equipment for obtaining vacuum by pumping a pumped container by using a mechanical, physical, chemical or physicochemical method. In general, a vacuum pump is a device for improving, generating and maintaining a vacuum in a certain closed space by various methods. The pump casing is an important component of the vacuum pump, the volute of the component is used for installing the impeller and connecting the inner space of the pump body with an external pipeline, and the pump casing is required to have higher precision requirement in order to ensure reliable and attractive connection and tightness of the pump body. However, the existing vacuum pump housing has the problems of poor processing precision and low efficiency in processing and manufacturing.
Disclosure of Invention
The invention aims to provide a vacuum pump shell machining method, and aims to solve the problems of poor machining precision and low machining efficiency of the vacuum pump shell in the prior art.
In order to realize the purpose, the invention adopts the technical scheme that: the method for machining the vacuum pump shell comprises the following steps:
casting a pump body blank, pouring liquid metal into a prefabricated wax mold, and after the metal liquid is cooled and hardened, enabling the wax mold to fall off from the surface of the pump body blank to form the pump body blank;
blank sizing, namely buckling the pump body blank on a sizing die, keeping the inner side end face of the pump body blank attached to a reference surface of the sizing die, and applying certain pressure to the pump body blank by using pressure equipment;
roughly turning the pump body, aligning the outline of the pump body blank, and then roughly machining the central inner hole of the blank to be used as a positioning hole, machining the outer end face and the molded surface on the outer end face of the pump body blank, and machining the periphery of the blank to reduce the finish machining amount, thereby reducing the subsequent finish machining time and the stress deformation after finish machining;
semi-finish turning, namely, removing the pump body, reinstalling and fixing the pump body by taking the outer end face as a reference surface, aligning the periphery of the pump body, taking a central inner hole as a reference hole, and finishing the inner end face and the upper profile of the inner end face;
performing numerical milling, namely pressing and fixing the outer side end face of the pump body downwards on a workbench, finely machining the inner side end face of the pump body and a sealing ring mounting groove by taking the outer side end face of the pump body as a reference surface, finely machining a profile groove on the inner side end face of the pump body, and manufacturing a plurality of mounting threaded holes on the periphery of the pump body;
performing numerical milling and turning machining, namely turning the machine tool workbench and the pump body by 90 degrees at the same time, enabling the end surface of the water outlet of the pump body to be upward, machining the end surface of the water outlet of the pump body, and machining a plurality of screw through holes on the end surface of the water outlet;
and (3) finish turning, namely, installing and fixing the pump body by taking the inner side end face as a reference, finish machining all profiles which are not machined in place on the outer side end face of the pump body, and finish machining the central inner hole of the pump body.
As another embodiment of the present application, the finish turning further includes the following steps:
and (3) drilling and milling, namely, facing the end face of the inner side of the pump body upwards, fixing the pump body on a workbench, and machining mounting threaded holes of all parts on the inner side face of the pump body by taking a central inner hole of the pump body as a reference.
As another embodiment of this application, what used in the blank school type step school type mould includes the mould body that is used for installing the school type mould on pressure equipment table surface, sets up mould body top and with pump body blank looks adaptation school type profile and set up on the school type profile and with the corresponding datum plane of pump body blank medial surface position.
As another embodiment of this application, the profile of processing in the pump body rough turning processing step is mounting groove, radial allowance process volume 0.7mm to 1mm is processed to mounting groove, allowance process volume 0.7mm to 1mm is kept to the depth direction during mounting groove processing.
As another embodiment of the present application, the pump body rough turning step and the semi-finish turning step further include therebetween:
cutting off a flat pouring gate, cutting off the pouring gate when the pump body blank is cast, and chamfering the periphery of the pump body;
and (5) checking for the first time, and detecting the sizes of the pump body after processing.
As another embodiment of the application, the machining tolerance is-0.02 mm to +0.02mm when the inner side end surface and the molded surface on the inner side end surface are subjected to finish machining in the semi-finish turning machining step, the tolerance of an inner hole is-0.01 mm to 0, and the parallelism and the perpendicularity of all the machined surfaces are 0.02mm to 0.04 mm.
As another embodiment of the present application, in the blank sizing step, the time for applying pressure to the pump body blank by the pressure device is 5min or more.
As another embodiment of the present application, in the step of casting the pump body blank, the machining amount reserved on the surface of the pump body blank during casting is 1mm to 2 mm.
The method for processing the vacuum pump shell has the beneficial effects that: compared with the prior art, the method comprises the following steps: casting a pump body blank, pouring liquid metal into a prefabricated wax mold, and after the metal liquid is cooled and hardened, enabling the wax mold to fall off from the surface of the pump body blank to form the pump body blank; blank sizing, namely buckling the pump body blank on a sizing die, keeping the inner side end face of the pump body blank attached to a reference surface of the sizing die, and applying certain pressure to the pump body blank by using pressure equipment; roughly turning the pump body, aligning the outline of the pump body blank, roughly machining the central inner hole of the blank to be used as a positioning hole, machining the outer end face and the molded surface on the outer end face of the pump body blank, and machining the periphery of the blank; semi-finish turning, namely, removing the pump body, reinstalling and fixing the pump body by taking the outer end face as a reference surface, aligning the periphery of the pump body, taking a central inner hole as a reference hole, and finishing the inner end face and the upper profile of the inner end face; performing numerical milling, namely pressing and fixing the outer side end face of the pump body downwards on a workbench, finely machining the inner side end face of the pump body and a sealing ring mounting groove by taking the outer side end face of the pump body as a reference surface, finely machining a profile groove on the inner side end face of the pump body, and manufacturing a plurality of mounting threaded holes on the periphery of the pump body; performing numerical milling and turning machining, namely turning the machine tool workbench and the pump body by 90 degrees at the same time, enabling the end surface of the water outlet of the pump body to be upward, machining the end surface of the water outlet of the pump body, and machining a plurality of screw through holes on the end surface of the water outlet; and (3) finish turning, namely, installing and fixing the pump body by taking the inner side end face as a reference, finish machining all profiles which are not machined in place on the outer side end face of the pump body, and finish machining the central inner hole of the pump body. According to the method for machining the vacuum pump shell, the shape of the pump body blank is corrected by using the correction die and the pressure equipment before the pump body blank is machined, so that the deformation size of the pump body blank during casting can be prevented from being overlarge, the machining precision of the pump body machining is improved, the reserved machining amount of the pump body during casting can be reduced, the time required for machining the pump body blank in place is shortened, the machining efficiency of the pump body is greatly improved, the machining tolerance of the inner side end face of the pump body and the upper molding face of the inner side end face after machining is achieved is-0.02- +0.02, the tolerance of an inner hole is 0-0.01 mm, and the parallelism and the perpendicularity of all the machining faces are 0.02-0.04 mm.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a vacuum pump housing provided in an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional structural view of a vacuum pump housing provided in an embodiment of the present invention;
fig. 3 is a schematic flow chart of a method for processing a vacuum pump housing according to an embodiment of the present invention.
In the figure: 1. a pump body; 2. an inner side end surface; 3. an outer end face; 4. a water outlet; 5. and (5) assembling.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 3 together, a method for processing a vacuum pump housing according to the present invention will now be described. The processing method of the vacuum pump shell comprises the following steps:
casting a pump body 1 blank, pouring liquid metal into a prefabricated wax mold, and after the metal liquid is cooled and hardened, enabling the wax mold to fall off from the surface of the pump body 1 blank to form the pump body 1 blank;
blank sizing, namely buckling the blank of the pump body 1 on a sizing die, keeping the inner side end face 2 of the blank of the pump body 1 attached to a reference surface of the sizing die, and applying a certain pressure to the blank of the pump body 1 by using pressure equipment;
the pump body 1 is roughly machined, after the outline of the pump body 1 blank is aligned, the central inner hole of the roughly machined blank is used as a positioning hole, the outer side end face 3 of the pump body 1 blank and the molded surface on the outer side end face 3 are machined, the periphery of the blank is machined, and the finish machining amount is reduced, so that the subsequent finish machining time and the stress deformation after finish machining are reduced;
semi-finish turning, namely detaching the pump body 1, reinstalling and fixing the pump body by taking the outer end face 3 as a reference face, aligning the periphery of the pump body 1, taking a central inner hole as a reference hole, and finishing the inner end face 2 and the upper profile of the inner end face 2;
performing numerical milling, namely pressing and fixing the outer side end face 3 of the pump body 1 on a workbench downwards, and finish machining the inner side end face 2 and a sealing ring mounting groove of the pump body 1 by taking the outer side end face 3 of the pump body 1 as a reference surface, a profile groove on the inner side end face 2 of the pump body 1, and a plurality of mounting threaded holes on the periphery of the pump body 1;
performing numerical milling and turning, namely turning the machine tool workbench and the pump body 1 by 90 degrees at the same time, enabling the end surface at the water outlet 4 of the pump body 1 to be upward, processing the end surface at the water outlet 4 of the pump body 1, and processing a plurality of screw through holes on the end surface at the water outlet;
and (3) finish turning, namely, installing and fixing the pump body 1 by taking the inner side end face 2 as a reference, finish machining all profiles which are not machined in place on the outer side end face 3 of the pump body 1, and finish machining the central inner hole of the pump body 1.
Compared with the prior art, the method for processing the vacuum pump shell provided by the embodiment comprises the following steps: casting a pump body 1 blank, pouring liquid metal into a prefabricated wax mold, and after the metal liquid is cooled and hardened, enabling the wax mold to fall off from the surface of the pump body 1 blank to form the pump body 1 blank; blank sizing, namely buckling the blank of the pump body 1 on a sizing die, keeping the inner side end face 2 of the blank of the pump body 1 attached to a reference surface of the sizing die, and applying a certain pressure to the blank of the pump body 1 by using pressure equipment; roughly turning the pump body 1, after aligning the outline of the pump body 1 blank, roughly machining the central inner hole of the blank to be used as a positioning hole, machining the outer side end face 3 of the pump body 1 blank and the molded surface on the outer side end face 3, and machining the periphery of the blank; semi-finish turning, namely detaching the pump body 1, reinstalling and fixing the pump body by taking the outer end face 3 as a reference face, aligning the periphery of the pump body 1, taking a central inner hole as a reference hole, and finishing the inner end face 2 and the upper profile of the inner end face 2; performing numerical milling, namely pressing and fixing the outer side end face 3 of the pump body 1 on a workbench downwards, and finish machining the inner side end face 2 and a sealing ring mounting groove of the pump body 1 by taking the outer side end face 3 of the pump body 1 as a reference surface, a profile groove on the inner side end face 2 of the pump body 1, and a plurality of mounting threaded holes on the periphery of the pump body 1; performing numerical milling and turning, namely turning the machine tool workbench and the pump body 1 by 90 degrees at the same time, enabling the end surface at the water outlet 4 of the pump body 1 to be upward, processing the end surface at the water outlet 4 of the pump body 1, and processing a plurality of screw through holes on the end surface at the water outlet; and (3) finish turning, namely, installing and fixing the pump body 1 by taking the inner side end face 2 as a reference, finish machining all profiles which are not machined in place on the outer side end face 3 of the pump body 1, and finish machining the central inner hole of the pump body 1. According to the method for machining the vacuum pump shell, the shape of the pump body 1 blank is corrected by using the correction die and the pressure equipment before the pump body 1 blank is machined, so that the phenomenon that the pump body 1 blank is too large in deformation size during casting can be prevented, the machining precision of the pump body 1 is improved, the blank is corrected after the casting is finished, the reserved machining amount of the pump body 1 during casting can be reduced, the time required for machining the pump body 1 blank in place is shortened, the machining efficiency of the pump body 1 is greatly improved, the machining tolerance of the inner side end face and the upper molding surface of the inner side end face of the pump body after the machining is finished is-0.02- +0.02, the tolerance of an inner hole is 0-0.01 mm, and the parallelism and the perpendicularity of all the machining faces are 0.02-0.04 mm.
Referring to fig. 1 to 3 together, as a specific embodiment of the method for machining a vacuum pump housing according to the present invention, after finish machining, the method further includes the following steps: and (3) drilling and milling, namely, facing the end face 2 of the inner side of the pump body 1 upwards, fixing the pump body 1 on a workbench, and machining mounting threaded holes of all parts on the inner side face of the pump body 1 by taking a central inner hole of the pump body 1 as a reference. The pump body 1 after finish turning is machined through a five-axis machining tool, the fixing tool 5 is installed on a workbench of the machine tool in the same way, then the outer end face 3 of the pump body 1 faces downwards and is fixed on the fixing tool 5 through a pressing plate in a pressing mode, installation threaded holes of all parts on the inner side face of the pump body 1 are machined by using a cutter of the machine tool with a central inner hole as a reference, and then threads are tapped.
Referring to fig. 1 to 3, as an embodiment of the method for machining the vacuum pump housing provided by the present invention, the sizing die used in the blank sizing step includes a die body for mounting the sizing die on the table of the pressure equipment, a sizing profile disposed on the top of the die body and adapted to the blank of the pump body 1, and a reference surface disposed on the sizing profile and corresponding to the position of the inner end surface 2 of the blank of the pump body 1. In the blank sizing process, the inner side end face 2 of the blank of the pump body 1 is buckled downwards on a sizing die, then the sizing die and the blank of the pump body 1 are usually fixedly placed on a press machine through pressure equipment, a certain pressure is applied to the blank of the pump body 1 through a slide block of the press machine, important processing surfaces of all parts on the inner side end face 2 of the blank of the pump body 1 are close to a reference surface on a die body as much as possible, and therefore deformation of the blank is reduced.
In this embodiment, the internal stress relieving treatment is performed on the blank of the pump body 1 for a period of time after the casting is completed and before the blank is corrected, and the natural aging treatment or the vibration aging treatment may be performed.
Referring to fig. 1 to 3, as a specific embodiment of the method for processing a vacuum pump housing according to the present invention, a profile processed in a rough turning processing step of a pump body 1 is an installation groove, a radial allowance processing amount is 0.7mm to 1mm when the installation groove is processed, and a depth allowance processing amount is 0.7mm to 1mm when the installation groove is processed. The flow processing of the mounting groove can facilitate subsequent continuous fine processing, the processing amount is kept to be 0.7mm to 1mm, sufficient subsequent processing is guaranteed, meanwhile, the processing amount in subsequent processing is reduced, and the processing efficiency is improved.
As a specific embodiment of the method for machining the vacuum pump housing provided by the present invention, referring to fig. 1 to 3, the step of rough turning the pump body 1 and the step of semi-finish turning the pump body further include: cutting off a flat gate, cutting off the gate when the pump body 1 blank is cast, and chamfering the periphery of the pump body 1; and (5) checking for the first time, and detecting the sizes of the pump body 1 after processing. The cut flat gate is processed during rough turning, and the rough turning equipment is generally equipment with low processing precision and can perform processing with large processing amount. The rough turning processing equipment is adopted for cutting off the flat gate and chamfering, so that the processing efficiency can be improved, and the damage to the equipment precision can be reduced.
Referring to fig. 1 to 3, as an embodiment of the method for machining a vacuum pump housing according to the present invention, in the semi-finish turning step, the machining tolerance is-0.02 mm to +0.02mm when the inner end surface 2 and the upper profile of the inner end surface 2 are finish-machined. The tolerance of the inner hole is-0.01 mm to 0, the parallelism and the perpendicularity of all the processing surfaces are 0.02 to 0.04mm, and the processing tolerance is-0.02 to +0.02, so that the subsequent processing precision is better when the molded surface on the inner side end surface 2 is taken as the processing reference in the subsequent processing, and the processing precision is improved.
Referring to fig. 1 to 3, as a specific embodiment of the method for processing a vacuum pump housing according to the present invention, the time for applying pressure to the blank of the pump body 1 by the pressure device is more than 5 min. Fixed pressure is applied to the pump body 1 blank through pressure equipment and is kept for more than 5min, so that the shape of the pump body blank is more stable after pressure correction, the pump body 1 blank is prevented from recovering to the original shape due to the elastic action after the pressure of the pressure equipment is removed, the correction effect of the pump body 1 blank is influenced, and the blank correction is more accurate.
Referring to fig. 1 to 3, as a specific embodiment of the method for machining a vacuum pump housing according to the present invention, in the step of casting a blank of a pump body 1, a machining amount of the blank of the pump body 1 is set to 1mm to 2mm when the blank of the pump body 1 is cast. The machining amount reserved on the surface of the pump body 1 blank is reduced to 1mm to 2mm when the pump body 1 blank is cast, the cutting amount of the pump body 1 blank in machining can be reduced, and the machining efficiency of the pump body 1 blank is higher.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A method for processing a vacuum pump shell is characterized by comprising the following steps:
casting a pump body blank, pouring liquid metal into a prefabricated wax mold, and after the metal liquid is cooled and hardened, enabling the wax mold to fall off from the surface of the pump body blank to form the pump body blank;
blank sizing, namely buckling the pump body blank on a sizing die, keeping the inner side end face of the pump body blank attached to a reference surface of the sizing die, and applying certain pressure to the pump body blank by using pressure equipment;
roughly turning the pump body, aligning the outline of the pump body blank, and then roughly machining the central inner hole of the blank to be used as a positioning hole, machining the outer end face and the molded surface on the outer end face of the pump body blank, and machining the periphery of the blank to reduce the finish machining amount, thereby reducing the subsequent finish machining time and the stress deformation after finish machining;
semi-finish turning, namely, removing the pump body, reinstalling and fixing the pump body by taking the outer end face as a reference surface, aligning the periphery of the pump body, taking a central inner hole as a reference hole, and finishing the inner end face and the upper profile of the inner end face;
performing numerical milling, namely pressing and fixing the outer side end face of the pump body downwards on a workbench, finish machining the inner side end face and the sealing ring mounting groove of the pump body by taking the outer side end face of the pump body as a reference surface, finish machining a molded surface groove on the inner side end face of the pump body, and forming a plurality of mounting threaded holes on the periphery of the pump body;
performing digital milling and turning processing, namely turning the machine tool workbench and the pump body by 90 degrees at the same time, enabling the end surface of the water outlet of the pump body to be upward, processing the end surface of the water outlet of the pump body, and processing a plurality of screw through holes on the end surface of the water outlet;
and (3) finish turning, namely, installing and fixing the pump body by taking the inner side end face as a reference, finish machining all profiles which are not machined in place on the outer side end face of the pump body, and finish machining the central inner hole of the pump body.
2. The method of machining a vacuum pump housing of claim 1, further comprising the steps of, after the finish machining:
and (3) drilling and milling, namely, facing the end face of the inner side of the pump body upwards, fixing the pump body on a workbench, and machining mounting threaded holes of all parts on the inner side face of the pump body by taking a central inner hole of the pump body as a reference.
3. The vacuum pump housing processing method according to claim 1, wherein the sizing die used in the blank sizing step includes a die body for mounting the sizing die on a table of a press machine, a sizing die surface provided on a top of the die body and adapted to a blank of a pump body, and a reference surface provided on the sizing die surface and corresponding to a position of an inner end surface of the blank of the pump body.
4. The vacuum pump housing processing method according to claim 1, wherein the profile processed in the pump body rough turning processing step is a mounting groove, a radial allowance processing amount is 0.7mm to 1mm when the mounting groove is processed, and a depth allowance processing amount is 0.7mm to 1mm when the mounting groove is processed.
5. The method for machining a vacuum pump housing according to claim 4, wherein the step of roughly machining the pump body and the step of semi-finely machining the pump body further comprise:
cutting off a flat pouring gate, cutting off the pouring gate when the pump body blank is cast, and chamfering the periphery of the pump body;
and (5) checking for the first time, and detecting the sizes of the pump body after processing.
6. The method for processing the vacuum pump housing as claimed in claim 1, wherein the semi-finish turning processing step is performed with a processing tolerance of-0.02 mm to +0.02mm when the profiles on the inner side end face and the inner side end face are finished, an inner hole tolerance of-0.01 mm to 0, and parallelism and perpendicularity of all processing faces of 0.02mm to 0.04 mm.
7. The vacuum pump housing processing method according to claim 1, wherein in the blank sizing step, the time for applying pressure to the pump body blank by the pressure device is 5 minutes or more.
8. The vacuum pump housing processing method according to claim 1 or 3, wherein the processing amount reserved on the surface of the pump body blank in the step of casting the pump body blank is 1mm to 2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011147561.6A CN112658593B (en) | 2020-10-23 | 2020-10-23 | Method for machining vacuum pump shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011147561.6A CN112658593B (en) | 2020-10-23 | 2020-10-23 | Method for machining vacuum pump shell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112658593A CN112658593A (en) | 2021-04-16 |
| CN112658593B true CN112658593B (en) | 2022-07-05 |
Family
ID=75403387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011147561.6A Active CN112658593B (en) | 2020-10-23 | 2020-10-23 | Method for machining vacuum pump shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112658593B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114367713B (en) * | 2022-01-29 | 2023-06-20 | 中国航发湖南动力机械研究所 | Machining method for segmented 3D printing turbine guide vane blank |
| CN115488594A (en) * | 2022-10-28 | 2022-12-20 | 贵州凯星液力传动机械有限公司 | Machining method of eccentric oil pump shell |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392114A (en) * | 2011-09-30 | 2012-03-28 | 沈阳黎明航空发动机(集团)有限责任公司 | Thermal calibration method for precisely cast structural pieces of cartridge receiver |
| CN105312852A (en) * | 2014-08-05 | 2016-02-10 | 江苏梅花机械有限公司 | Machining process of vacuum pump case |
| CN106181251A (en) * | 2016-08-04 | 2016-12-07 | 东莞宜安科技股份有限公司 | The screwed hole manufacture method of block terminal metal shell |
| CN111015083A (en) * | 2019-11-14 | 2020-04-17 | 浙江格雷特科技股份有限公司 | Processing technology of clutch booster shell |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6802916B2 (en) * | 2001-06-29 | 2004-10-12 | Honeywell International Inc. | Selectively cold worked hydraulic motor/pump shoe |
| US7632073B2 (en) * | 2005-06-08 | 2009-12-15 | Dresser-Rand Company | Impeller with machining access panel |
-
2020
- 2020-10-23 CN CN202011147561.6A patent/CN112658593B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392114A (en) * | 2011-09-30 | 2012-03-28 | 沈阳黎明航空发动机(集团)有限责任公司 | Thermal calibration method for precisely cast structural pieces of cartridge receiver |
| CN105312852A (en) * | 2014-08-05 | 2016-02-10 | 江苏梅花机械有限公司 | Machining process of vacuum pump case |
| CN106181251A (en) * | 2016-08-04 | 2016-12-07 | 东莞宜安科技股份有限公司 | The screwed hole manufacture method of block terminal metal shell |
| CN111015083A (en) * | 2019-11-14 | 2020-04-17 | 浙江格雷特科技股份有限公司 | Processing technology of clutch booster shell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112658593A (en) | 2021-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112658593B (en) | Method for machining vacuum pump shell | |
| CN103406725B (en) | A kind of flutter model roof beam structure processing method | |
| CN113600883B (en) | Floating knife handle | |
| CN101347896A (en) | Technique for processing connecting rod bearing shell | |
| CN109128718B (en) | Manufacturing method of mechanical type steam compressor combined diffuser | |
| CN102649164B (en) | Machining method for stainless steel seal rings in large valves | |
| CN104741881A (en) | Production method of blade of compressor impeller | |
| CN203209732U (en) | Locating and clamping structure for machining recoil spring pocket | |
| CN215998854U (en) | Radial floating cutter | |
| CN105945123B (en) | Double-face valve wire casing valve plate fine forming method | |
| CN209586772U (en) | A kind of new-type three-dimensional closed impeller | |
| CN211360214U (en) | On-shaft rib extruding tool for specific rotor shaft | |
| CN202012616U (en) | Glue-injected sealing device for assembling surface | |
| CN111889970A (en) | Machining method for ensuring flatness of mounting reference surface of movable scroll | |
| CN101602238B (en) | Mold core and processing method thereof | |
| CN205464662U (en) | A fixing device for mould cavity | |
| CN207043791U (en) | A kind of clamping device of lathe process thin wall annular outer cover | |
| CN105964778B (en) | A method of reducing axial plastic force during single-point incremental forming | |
| CN111843389A (en) | Centrifugal pump volute machining method | |
| CN115533581B (en) | Numerical control machining clamping method for plate blank parts | |
| CN217166528U (en) | Hydraulic tool apron for lathe | |
| CN114798884B (en) | Forming tool for thin-wall part with U-shaped section annular structure | |
| CN114473379B (en) | Processing method of variable walking motor shell | |
| CN219650021U (en) | Hydraulic turbine rubber bearing bush hole cutting frock | |
| CN217571909U (en) | Ball valve sphere positioning and machining process equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230511 Address after: 071057 Hebei province Baoding Fuchang Road No. 8 Patentee after: FENGFAN Co.,Ltd. Address before: No. 311, Fujiang street, Jingxiu District, Baoding City, Hebei Province 071051 Patentee before: Baoding Sail Precision Machinery Technology Co.,Ltd. |