CN110539136A - Pump case machining method - Google Patents
Pump case machining method Download PDFInfo
- Publication number
- CN110539136A CN110539136A CN201910878576.0A CN201910878576A CN110539136A CN 110539136 A CN110539136 A CN 110539136A CN 201910878576 A CN201910878576 A CN 201910878576A CN 110539136 A CN110539136 A CN 110539136A
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- Prior art keywords
- selecting
- clamp
- pump
- pump shell
- determining
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses a pump shell processing method, which comprises the following steps: a. determining the type of the blank; b. carrying out heat treatment on the blank material; c. selecting a base surface; d. selecting processing equipment, a cutter and a measuring tool in each procedure and determining machining allowance; e. determining cutting amount and basic working hours; f. determining a special drilling clamp; g. and cleaning the cut waste. The invention relates to a pump shell processing method, which can improve the processing precision of a pump shell, improve the production efficiency and the machinability of the pump shell and is more beneficial to subsequent popularization and use.
Description
Technical Field
The invention relates to the technical field related to pump shell processing, in particular to a pump shell processing method.
Background
The pump shell is a part for supporting, connecting other parts and bearing loads, is also a basic part of a machine and a part, is connected with a pipeline or other shell parts through holes or threaded holes on the bottom surface, the upper end surface and the side surface, ensures that the parts keep correct position relation, and transmits liquid or gas through the holes of the shell;
In the process of machining the pump shell, the dimensional accuracy of the machined pump shell is different due to different machining process methods, and in the existing pump shell machining process method, because the traditional old machining method is unreasonable in machining reference selection of the pump shell, the high accuracy of the machined pump shell cannot be guaranteed, and the improvement of the production efficiency and the machinability of the pump shell cannot be guaranteed, the pump shell machining method is produced, so that the problems are solved.
disclosure of Invention
the present invention is directed to a pump casing processing method to solve the above problems of the prior art.
in order to achieve the purpose, the invention provides the following technical scheme: a pump casing machining method comprises the following steps:
a. Determining the blank type: common blank types comprise castings, forgings, weldments, stamping parts, various sectional materials, engineering plastic parts and the like;
b. Heat treatment of the blank material: most of blanks of the pump shell are made of integral iron castings, and the blanks are subjected to manual actual treatment before entering a machining workshop for eliminating the internal stress of the blanks;
c. selection of a base surface: selecting a rough datum, wherein the main requirement is to ensure that each machined surface has enough allowance so that the position between the machined surface and the non-machined surface meets the requirement of a pattern, then selecting a fine datum, and selecting a top end surface as the fine datum according to a datum superposition principle;
d. selecting processing equipment, a cutter and a measuring tool in each procedure and determining machining allowance: the machining allowance of the bottom surface of the shell, the machining allowance of the top surface of the shell, the machining allowance of the hole, the machining allowance of the thread and the machining allowance of the groove are included;
e. determining cutting amount and basic working hours: processing the bottom end face of the pump shell, selecting an end face milling cutter and selecting an X52K type milling machine, wherein the power is 7.5 KW; processing the top end face of the pump shell, selecting an end face milling cutter and selecting an X52K type milling machine, wherein the power is 7.5 KW; reaming the pump shell, selecting a Z3025 radial drilling machine, and selecting a high-speed steel twist drill bit; a thread groove is formed in the side wall of the pump body, and a screw tap for a high-speed steel machine is selected; for milling grooves in the side wall of the pump body, a three-edge milling cutter is adopted as a cutter, and YG8 is adopted as a blade;
f. determining a special drilling clamp: the clamp design should meet the requirements of 'three-in-one' of universalization, standardization and serialization;
g. Cleaning the cut waste: cleaning scraps on processing table surfaces of a lathe, a milling machine, a drilling machine and the like, cleaning the surface of a pump shell, and carrying out oxidation treatment;
preferably, the blank is determined taking into account the material and mechanical performance requirements of the pump casing, the structural shape and physical dimensions of the pump casing, and the type of pump casing being produced.
Preferably, the blank is screened to remove defects such as sand holes, air holes, lock holes, non-metallic inclusions and the like during blank casting.
preferably, the positioning datum limits six degrees of freedom of the pump casing, namely movement along the X, Y, Z axis and rotation around the X, Y, Z axis, a 'pin-on-pin' positioning method is adopted, and a pin is a chamfered pin, so that the phenomenon of over-positioning is prevented.
Preferably, the clamp used for machining the pump casing includes a manual clamp, a pneumatic clamp, a hydraulic clamp, a gas-liquid clamp, an electric clamp, a magnetic clamp, a vacuum clamp and the like.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention relates to a pump shell processing method, which can improve the processing precision of a pump shell, improve the production efficiency and the machinability of the pump shell and is more beneficial to subsequent popularization and use;
2. the invention adopts a positioning method of two pins on one surface, and one pin adopts a chamfered edge pin, thereby preventing the phenomenon of over-positioning and improving the processing efficiency.
3. In the selection of the standard, a rough standard is selected firstly, then a fine standard is selected, and when the rough standard is selected, the rough standard is relatively flat and has no defects of casting heads or flash and the like so as to be more reliable in positioning.
Detailed Description
The embodiments of the present application will be described more clearly and completely in connection with the technical solutions of the embodiments of the present invention by providing a pump casing processing method, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
examples
The embodiment provides a pump shell machining method which comprises the following steps:
a. Determining the blank type: the common blank types comprise castings, forgings, weldments, stamping parts, various profiles, engineering plastic parts and the like, and the castings are preferably selected as blank parts for processing the pump shell;
b. heat treatment of the blank material: most of blanks of the pump shell are made of integral iron castings, and the blanks are subjected to manual actual treatment before entering a machining workshop for eliminating the internal stress of the blanks;
c. selection of a base surface: selecting a rough datum which is required to ensure that each machined surface has enough allowance so that the position between the machined surface and the non-machined surface meets the requirement of a pattern, selecting the rough datum which is relatively flat and has no defects such as casting heads or flash edges and the like so as to be more reliable in positioning, then selecting a fine datum, and selecting a top end surface as the fine datum according to a datum superposition principle, wherein the selection of the fine datum is based on ensuring the machining precision of a pump shell, and simultaneously considering that clamping is simpler and more convenient, and the principles of datum superposition, datum unification, datum self-reference and mutual datum reference are followed;
d. selecting processing equipment, a cutter and a measuring tool in each procedure and determining machining allowance: the machining allowance of the bottom surface of the shell, the machining allowance of the top surface of the shell, the machining allowance of the hole, the machining allowance of the thread and the machining allowance of the groove are included;
e. Determining cutting amount and basic working hours: processing the bottom end face of the pump shell, selecting an end face milling cutter, selecting an X52K type milling machine with the power of 7.5KW, and firstly milling the bottom end face of the pump shell to achieve the processing precision; processing the top end face of the pump shell, selecting an end face milling cutter, selecting an X52K type milling machine with the power of 7.5KW, and milling the top end face of the pump shell to achieve the processing precision; reaming the pump shell, selecting a Z3025 radial drilling machine, selecting a high-speed steel twist drill, and reaming the pump shell by using the drilling machine according to the original design size of the pump shell; forming a thread groove on the side wall of the pump body, selecting a screw tap for a high-speed steel machine, and tapping the thread groove by using the screw tap; milling grooves on the side wall of the pump body, wherein a three-edge milling cutter is adopted as a cutter, YG8 is adopted as a blade, and YG8 milling cutters are adopted to mill grooves on the side wall of the pump body;
f. determining a special drilling clamp: the clamp design should meet the requirements of 'three-in-one' of universalization, standardization and serialization, so that the clamp can have wider universality and is used for clamping more pump casings with different sizes and shapes;
g. Cleaning the cut waste: the method comprises the following steps of cleaning scraps of processing table tops of lathes, milling machines, drilling machines and the like, cleaning the surface of a pump shell, carrying out oxidation treatment, cleaning and maintaining processing equipment after processing so as to facilitate next processing and use of the equipment, and cleaning the surface scraps of the processed pump shell and carrying out oxidation treatment;
in determining the blank, the material and mechanical performance requirements of the pump casing, the structural shape and the external dimension of the pump casing and the production type of the pump casing need to be considered so as to facilitate processing.
During blank casting, blank pieces with defects of sand holes, air holes, lock holes, non-metallic inclusions and the like are screened out, the defective blank pieces are screened out, and the yield of the pump shell is improved.
the positioning reference limits six degrees of freedom of the pump shell, namely movement along an X, Y, Z shaft and rotation around a X, Y, Z shaft, a positioning method of 'one surface and two pins' is adopted, and a chamfered pin is adopted in one pin, so that the phenomenon of over-positioning is prevented, and the processing efficiency is improved.
The clamp adopted by the pump shell processing comprises a manual clamp, a pneumatic clamp, a hydraulic clamp, a gas-liquid clamp, an electric clamp, a magnetic clamp, a vacuum clamp and the like, and a processor can select the clamp according to the processing requirement and can meet the use requirement.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A pump casing machining method comprises the following steps:
a. determining the blank type: common blank types comprise castings, forgings, weldments, stamping parts, various sectional materials, engineering plastic parts and the like;
b. Heat treatment of the blank material: most of blanks of the pump shell are made of integral iron castings, and the blanks are subjected to manual actual treatment before entering a machining workshop for eliminating the internal stress of the blanks;
c. selection of a base surface: selecting a rough datum, wherein the main requirement is to ensure that each machined surface has enough allowance so that the position between the machined surface and the non-machined surface meets the requirement of a pattern, then selecting a fine datum, and selecting a top end surface as the fine datum according to a datum superposition principle;
d. Selecting processing equipment, a cutter and a measuring tool in each procedure and determining machining allowance: the machining allowance of the bottom surface of the shell, the machining allowance of the top surface of the shell, the machining allowance of the hole, the machining allowance of the thread and the machining allowance of the groove are included;
e. determining cutting amount and basic working hours: processing the bottom end face of the pump shell, selecting an end face milling cutter and selecting an X52K type milling machine, wherein the power is 7.5 KW; processing the top end face of the pump shell, selecting an end face milling cutter and selecting an X52K type milling machine, wherein the power is 7.5 KW; reaming the pump shell, selecting a Z3025 radial drilling machine, and selecting a high-speed steel twist drill bit; a thread groove is formed in the side wall of the pump body, and a screw tap for a high-speed steel machine is selected; for milling grooves in the side wall of the pump body, a three-edge milling cutter is adopted as a cutter, and YG8 is adopted as a blade;
f. Determining a special drilling clamp: the clamp design should meet the requirements of 'three-in-one' of universalization, standardization and serialization;
g. Cleaning the cut waste: the method comprises the following steps of cleaning scraps of processing table surfaces of lathes, milling machines, drilling machines and the like, cleaning the surface of a pump shell, and carrying out oxidation treatment.
2. a pump casing processing method according to claim 1, wherein: in determining the blank, the material and mechanical performance requirements of the pump casing, the structural shape and the external dimension of the pump casing and the production type of the pump casing need to be considered.
3. a pump casing processing method according to claim 1, wherein: during blank casting, blank pieces with defects of sand holes, air holes, lock holes, non-metallic inclusions and the like are screened out.
4. a pump casing processing method according to claim 1, wherein: the positioning reference limits six degrees of freedom of the pump casing, namely movement along the X, Y, Z axis and rotation around the X, Y, Z axis, adopts a positioning method of 'one-surface-two-pin' and adopts a chamfered pin for one pin, so that the phenomenon of over-positioning is prevented.
5. A pump casing processing method according to claim 1, wherein: the clamps used for processing the pump shell comprise a manual clamp, a pneumatic clamp, a hydraulic clamp, a gas-liquid clamp, an electric clamp, a magnetic clamp, a vacuum clamp and the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910878576.0A CN110539136A (en) | 2019-09-18 | 2019-09-18 | Pump case machining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910878576.0A CN110539136A (en) | 2019-09-18 | 2019-09-18 | Pump case machining method |
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| Publication Number | Publication Date |
|---|---|
| CN110539136A true CN110539136A (en) | 2019-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910878576.0A Pending CN110539136A (en) | 2019-09-18 | 2019-09-18 | Pump case machining method |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 (6)
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| CN101941136A (en) * | 2010-08-02 | 2011-01-12 | 陆如辉 | Process for processing and manufacturing box of automobile water cooling generator |
| CN102059520A (en) * | 2010-12-08 | 2011-05-18 | 中国建筑第八工程局有限公司 | Method for manufacturing twisted case |
| CN102672422A (en) * | 2011-10-24 | 2012-09-19 | 黄乃亨 | Method for manufacturing gear case |
| CN102773675A (en) * | 2012-08-14 | 2012-11-14 | 河南光大管业有限公司 | Molding process of header body |
| CN103418804A (en) * | 2012-05-16 | 2013-12-04 | 文静 | Processing technique for drilling machine gearbox body |
| CN103817278A (en) * | 2012-11-19 | 2014-05-28 | 上海重型机器厂有限公司 | Method for manufacturing pump shell forging of third-generation pressurized water reactor nuclear power coolant pump |
-
2019
- 2019-09-18 CN CN201910878576.0A patent/CN110539136A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941136A (en) * | 2010-08-02 | 2011-01-12 | 陆如辉 | Process for processing and manufacturing box of automobile water cooling generator |
| CN102059520A (en) * | 2010-12-08 | 2011-05-18 | 中国建筑第八工程局有限公司 | Method for manufacturing twisted case |
| CN102672422A (en) * | 2011-10-24 | 2012-09-19 | 黄乃亨 | Method for manufacturing gear case |
| CN103418804A (en) * | 2012-05-16 | 2013-12-04 | 文静 | Processing technique for drilling machine gearbox body |
| CN102773675A (en) * | 2012-08-14 | 2012-11-14 | 河南光大管业有限公司 | Molding process of header body |
| CN103817278A (en) * | 2012-11-19 | 2014-05-28 | 上海重型机器厂有限公司 | Method for manufacturing pump shell forging of third-generation pressurized water reactor nuclear power coolant pump |
Non-Patent Citations (1)
| Title |
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| 于泓等: "《机械制造工艺学》", 31 January 2015, 西北工业大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN115488594B (en) * | 2022-10-28 | 2024-09-03 | 贵州航天凯星智能传动有限公司 | Machining method of eccentric oil pump shell |
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Application publication date: 20191206 |