CN112276479A - Rough machining process for main shaft of air-conditioning compressor of new energy automobile - Google Patents
Rough machining process for main shaft of air-conditioning compressor of new energy automobile Download PDFInfo
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- CN112276479A CN112276479A CN202010930752.3A CN202010930752A CN112276479A CN 112276479 A CN112276479 A CN 112276479A CN 202010930752 A CN202010930752 A CN 202010930752A CN 112276479 A CN112276479 A CN 112276479A
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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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- 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
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
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Abstract
The invention discloses a rough machining process of a main shaft of an air-conditioning compressor of a new energy automobile, which comprises the following steps of 1: basic processing of working equipment and related materials, step 2: preliminary machining of the compressor main shaft, and step 3: and (3) overall processing of the compressor main shaft, and step 4: standard rough machining of a main shaft of the compressor, and step 5: and (3) rough machining subsequent treatment of the main shaft of the compressor, and step 6: the invention relates to a relevant inspection and packaging of a compressor main shaft, and relates to the technical field of compressor main shafts. According to the rough machining process of the main shaft of the air conditioner compressor of the new energy automobile, through the step 3 and the step 4, the main shaft of the compressor can be comprehensively polished and then subjected to hot rolling operation, the problem that the quality of a hot rolled product is unqualified due to overhigh surface roughness of the main shaft of the compressor is solved, casting defects are eliminated, cracking and vibration phenomena of the main shaft during long-term use are greatly reduced, metal plasticity is high during hot rolling, and energy consumption of metal deformation is greatly reduced.
Description
Technical Field
The invention relates to the technical field of compressor main shafts, in particular to a rough machining process of a new energy automobile air conditioner compressor main shaft.
Background
The compressor is a driven fluid machine that raises low-pressure gas to high-pressure gas, and is the heart of a refrigeration system. The refrigerating cycle is powered by sucking low-temperature and low-pressure refrigerant gas from the air suction pipe, driving the piston to compress the refrigerant gas through the operation of the motor, and discharging high-temperature and high-pressure refrigerant gas to the exhaust pipe. Thereby realizing a refrigeration cycle of compression → condensation (heat release) → expansion → evaporation (heat absorption). The compressors are classified into piston compressors, screw compressors, centrifugal compressors, linear compressors, and the like. The terms introduce the working principle, classification, accessories, specifications, operation requirements, production, common faults and environmental protection requirements, model selection principle, installation conditions and development trend of the compressor.
When a traditional new energy automobile air conditioner compressor main shaft runs at a high speed for a long time, the main shaft often cracks or vibrates due to overheating or power overload, and if the compressor main shaft cracks during the running of an automobile, the reliability of the whole work of the compressor is seriously affected.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a rough machining process of a main shaft of an air-conditioning compressor of a new energy automobile, which solves the problems that the main shaft of the traditional air-conditioning compressor of the new energy automobile often cracks or vibrates due to overheating or power overload when the main shaft runs at a high speed for a long time, and the integral working reliability of the compressor is seriously influenced if the main shaft of the compressor cracks when the automobile runs.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a rough machining process of a main shaft of an air-conditioning compressor of a new energy automobile,
step 1: basic processing of working equipment and related materials: the working equipment is electrified and then is comprehensively checked, after the working equipment is completely qualified, the equipment is electrified and enters a standby state, the materials participating in operation are distinguished, and qualified materials are selected;
step 2: primary processing of a compressor main shaft: clamping a main shaft of the compressor, then primarily cutting a blank raw material of the main shaft of the compressor, and performing primary flaw detection on the cut blank raw material to collect a qualified product;
and step 3: and (3) overall processing of the compressor main shaft: carrying out surface grinding on the collected spindle blank material, carrying out surface grinding by using a grinding wheel of 40-80 meshes, then putting the ground spindle into a calcining furnace for heating to 900-;
and 4, step 4: standard rough machining of compressor main shaft: punching a compressor main shaft which is qualified through detection, primarily drilling a small hole on the surface of the compressor main shaft after the compressor main shaft is clamped by using a clamping jaw, expanding and continuously drilling the small hole after the small hole is successfully drilled, drilling the small hole into a large hole, then detecting the smoothness of the inner surface of the large hole, and immediately performing secondary operation on a non-smooth position until the inner surface of the large hole is smooth once unqualified operation is found;
and 5: rough machining subsequent treatment of the main shaft of the compressor: performing thread machining on the surface of the compressor spindle qualified in rough machining inspection, then comprehensively polishing the surface of the compressor spindle, tapping the surface of the compressor spindle completely polished by using a screw tap and a twisting bar, performing key groove milling operation on the surface of the compressor spindle, and performing comprehensive flaw detection operation on the compressor spindle after the complete operation is finished;
step 6: relevant inspection and packaging of the compressor main shaft: and carrying out dynamic balance on the roughly machined compressor main shaft, and carrying out air bag packaging on the detected compressor main shaft and putting the detected compressor main shaft into a warehouse.
Preferably, in the step 2, the flaw detection mode is magnetic particle flaw detection.
Preferably, in the step 3, when the grinding wheel is used for grinding, every 5 minutes of grinding, the grinding wheel is rested for 2 minutes.
Preferably, in the step 3, when the spline is pressed out, roll sticking and roll winding are avoided.
Preferably, in the step 3, when the spindle is inspected, ultrasonic inspection is used and mechanical properties thereof are inspected.
Preferably, in the step 5, the main body is threaded by using a numerical control machine.
Preferably, in the step 6, the stiffness dynamic balance adjustment is performed on the main shaft.
Preferably, in the step 6, a dust-free packing chamber is used for adjusting when the spindle is packed.
(III) advantageous effects
The invention provides a rough machining process of a main shaft of an air-conditioning compressor of a new energy automobile. Compared with the prior art, the method has the following beneficial effects:
(1) the rough machining process of the new energy automobile air conditioner compressor main shaft comprises the following steps of 3: and (3) overall processing of the compressor main shaft: carrying out surface grinding on the collected spindle blank material, carrying out surface grinding by using a grinding wheel of 40-80 meshes, then putting the ground spindle into a calcining furnace for heating to 900-; and 4, step 4: standard rough machining of compressor main shaft: punching the qualified compressor spindle, clamping the compressor spindle by using a clamping jaw, preliminarily drilling a small hole on the surface of the compressor spindle, and after the small hole is successfully drilled, then expanding and continuously drilling the small holes, drilling the small holes into large holes, then carrying out smoothness detection on the inner surface of the large holes, immediately carrying out secondary operation on the unsmooth position until the inner surface is smooth once unqualified operation is found, through the combined arrangement of the step 3 and the step 4, the compressor main shaft can be fully polished and then hot rolling operation is carried out, so that unqualified hot rolled product quality caused by overhigh surface roughness of the compressor main shaft is avoided, and because the casting defects are eliminated, the cracking and vibration phenomena of the main shaft in long-term use are greatly reduced, in addition, the metal plasticity is high during hot rolling, the deformation resistance is low, and the energy consumption of metal deformation is greatly reduced.
(2) The rough machining process of the new energy automobile air conditioner compressor main shaft comprises the following steps of 2: primary processing of a compressor main shaft: carry out the centre gripping with the compressor main shaft, then carry out preliminary cutting to the blank raw materials of compressor main shaft, carry out preliminary flaw detection to the blank material after the cutting and inspect, collect qualified product, step 5: rough machining subsequent treatment of the main shaft of the compressor: the surface of the compressor main shaft qualified by rough machining inspection is subjected to thread machining, then the surface of the compressor main shaft is comprehensively polished, the surface of the compressor main shaft which is completely polished is subjected to thread tapping by using a screw tap and a twisting rod, in addition, key groove milling operation is carried out on the surface of the compressor main shaft, after the complete operation is finished, the comprehensive flaw detection is carried out on the surface of the compressor main shaft, through the combined setting of the step 2 and the step 5, the flaw detection is carried out after the cutting of the compressor main shaft, the qualification rate of the main shaft in the subsequent production operation is improved, through the thread machining, the thread tapping and the key groove milling operation on the main shaft, the self functionality of the main shaft is further improved, and the main shaft cracking caused by.
(3) The rough machining process of the new energy automobile air conditioner compressor main shaft comprises the following steps of 1: basic processing of working equipment and related materials: the working equipment is comprehensively checked after being electrified, after the working equipment is completely qualified, the equipment is electrified to enter a standby state, the materials participating in operation are judged, the qualified materials are selected, and the step 6: relevant inspection and packaging of the compressor main shaft: the method comprises the steps of carrying out dynamic balance on a roughly machined compressor main shaft, carrying out air bag packaging on the detected compressor main shaft, and putting the detected compressor main shaft into a warehouse, detecting whether the inside of the air conditioner compressor main shaft meets the working requirements or not through flaw detection after the air conditioner compressor main shaft is completely processed through the combined setting of the step 1 and the step 6, and ensuring that the driving shaft can ensure sufficient stability and reliability when the driving shaft runs at a high speed through dynamic balance operation, thereby improving the safety coefficient.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the attached tables in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
Referring to table 1, an embodiment of the present invention provides a technical solution: a rough machining process of a main shaft of an air conditioner compressor of a new energy automobile specifically comprises the following embodiments:
example 1
Step 1: basic processing of working equipment and related materials: the working equipment is electrified and then is comprehensively checked, after the working equipment is completely qualified, the equipment is electrified and enters a standby state, the materials participating in operation are distinguished, and qualified materials are selected;
step 2: primary processing of a compressor main shaft: clamping a main shaft of the compressor, then primarily cutting a blank raw material of the main shaft of the compressor, and performing primary flaw detection on the cut blank raw material to collect a qualified product;
and step 3: and (3) overall processing of the compressor main shaft: the collected spindle blank is subjected to surface grinding, a grinding wheel of 40 meshes is used for surface grinding, the ground spindle is placed into a calcining furnace for heating to 900 ℃, then hot rolling operation is carried out on the surface of the spindle, when obvious splines are pressed out on the surface of the spindle, the spindle is observed, and basic detection is carried out on the spindle;
and 4, step 4: standard rough machining of compressor main shaft: punching a compressor main shaft which is qualified through detection, primarily drilling a small hole on the surface of the compressor main shaft after the compressor main shaft is clamped by using a clamping jaw, expanding and continuously drilling the small hole after the small hole is successfully drilled, drilling the small hole into a large hole, then detecting the smoothness of the inner surface of the large hole, and immediately performing secondary operation on a non-smooth position until the inner surface of the large hole is smooth once unqualified operation is found;
and 5: rough machining subsequent treatment of the main shaft of the compressor: performing thread machining on the surface of the compressor spindle qualified in rough machining inspection, then comprehensively polishing the surface of the compressor spindle, tapping the surface of the compressor spindle completely polished by using a screw tap and a twisting bar, performing key groove milling operation on the surface of the compressor spindle, and performing comprehensive flaw detection operation on the compressor spindle after the complete operation is finished;
step 6: relevant inspection and packaging of the compressor main shaft: and carrying out dynamic balance on the roughly machined compressor main shaft, and carrying out air bag packaging on the detected compressor main shaft and putting the detected compressor main shaft into a warehouse.
Example 2
Step 1: basic processing of working equipment and related materials: the working equipment is electrified and then is comprehensively checked, after the working equipment is completely qualified, the equipment is electrified and enters a standby state, the materials participating in operation are distinguished, and qualified materials are selected;
step 2: primary processing of a compressor main shaft: clamping a main shaft of the compressor, then primarily cutting a blank raw material of the main shaft of the compressor, and performing primary flaw detection on the cut blank raw material to collect a qualified product;
and step 3: and (3) overall processing of the compressor main shaft: the collected spindle blank is subjected to surface polishing, a 60-mesh grinding wheel is used for surface polishing, the polished spindle is placed into a calcining furnace to be heated to 1000 ℃, then hot rolling operation is carried out on the surface of the spindle, when obvious splines are pressed out on the surface of the spindle, the spindle is observed, and basic detection is carried out on the spindle;
and 4, step 4: standard rough machining of compressor main shaft: punching a compressor main shaft which is qualified through detection, primarily drilling a small hole on the surface of the compressor main shaft after the compressor main shaft is clamped by using a clamping jaw, expanding and continuously drilling the small hole after the small hole is successfully drilled, drilling the small hole into a large hole, then detecting the smoothness of the inner surface of the large hole, and immediately performing secondary operation on a non-smooth position until the inner surface of the large hole is smooth once unqualified operation is found;
and 5: rough machining subsequent treatment of the main shaft of the compressor: performing thread machining on the surface of the compressor spindle qualified in rough machining inspection, then comprehensively polishing the surface of the compressor spindle, tapping the surface of the compressor spindle completely polished by using a screw tap and a twisting bar, performing key groove milling operation on the surface of the compressor spindle, and performing comprehensive flaw detection operation on the compressor spindle after the complete operation is finished;
step 6: relevant inspection and packaging of the compressor main shaft: and carrying out dynamic balance on the roughly machined compressor main shaft, and carrying out air bag packaging on the detected compressor main shaft and putting the detected compressor main shaft into a warehouse.
Example 3
Step 1: basic processing of working equipment and related materials: the working equipment is electrified and then is comprehensively checked, after the working equipment is completely qualified, the equipment is electrified and enters a standby state, the materials participating in operation are distinguished, and qualified materials are selected;
step 2: primary processing of a compressor main shaft: clamping a main shaft of the compressor, then primarily cutting a blank raw material of the main shaft of the compressor, and performing primary flaw detection on the cut blank raw material to collect a qualified product;
and step 3: and (3) overall processing of the compressor main shaft: the method comprises the following steps of (1) carrying out surface grinding on a collected spindle blank material, carrying out surface grinding by using an 80-mesh grinding wheel, then putting a grinded spindle into a calcining furnace for heating to 1100 ℃, carrying out hot rolling operation on the surface of the spindle, observing the spindle when the surface of the spindle is pressed out of an obvious spline, and carrying out basic detection on the spindle;
and 4, step 4: standard rough machining of compressor main shaft: punching a compressor main shaft which is qualified through detection, primarily drilling a small hole on the surface of the compressor main shaft after the compressor main shaft is clamped by using a clamping jaw, expanding and continuously drilling the small hole after the small hole is successfully drilled, drilling the small hole into a large hole, then detecting the smoothness of the inner surface of the large hole, and immediately performing secondary operation on a non-smooth position until the inner surface of the large hole is smooth once unqualified operation is found;
and 5: rough machining subsequent treatment of the main shaft of the compressor: performing thread machining on the surface of the compressor spindle qualified in rough machining inspection, then comprehensively polishing the surface of the compressor spindle, tapping the surface of the compressor spindle completely polished by using a screw tap and a twisting bar, performing key groove milling operation on the surface of the compressor spindle, and performing comprehensive flaw detection operation on the compressor spindle after the complete operation is finished;
step 6: relevant inspection and packaging of the compressor main shaft: and carrying out dynamic balance on the roughly machined compressor main shaft, and carrying out air bag packaging on the detected compressor main shaft and putting the detected compressor main shaft into a warehouse.
Through the combined arrangement of the step 3 and the step 4, the compressor main shaft can be comprehensively polished and then subjected to hot rolling operation, so that unqualified hot rolled product quality caused by overhigh surface roughness of the compressor main shaft is avoided, the phenomena of cracking and vibration of the main shaft in long-term use are greatly reduced because casting defects are eliminated, in addition, the metal plasticity is high during hot rolling, the deformation resistance is low, the energy consumption of metal deformation is greatly reduced, through the combined arrangement of the step 2 and the step 5, flaw detection is carried out after the compressor main shaft is cut, the qualification rate of the main shaft in subsequent production operation is improved, through the thread machining, thread tapping and key slot milling operations of the main shaft, the self functionality of the main shaft is further improved, and the cracking of the main shaft caused by rough machining is avoided, through the combined arrangement of the step 1 and the step 6, after the main shaft of the air conditioner compressor is completely processed, whether the inside of the main shaft meets the working requirements is detected through flaw detection, and dynamic balance operation is performed, so that the driving shaft can ensure sufficient stability and reliability when running at a high speed, the safety coefficient is improved, in the step 2, the flaw detection mode is magnetic particle flaw detection, in the step 3, when a grinding wheel is used for grinding, every grinding time is 5 minutes, rest is carried out for 2 minutes, in the step 3, when a spline is extruded, the roller is prevented from being stuck, in the step 3, when the main shaft is detected, ultrasonic flaw detection is used for detecting the mechanical performance of the main shaft, in the step 5, the main shaft is subjected to thread machining by a numerical control machine tool, in the step 6, the main shaft is subjected to rigid dynamic balance adjustment, and in the step 6, when the main shaft is packaged, a.
And those not described in detail in this specification are well within the skill of those in the art.
Comparative experiment
According to claim 1, an existing manufacturer can produce three automobile air-conditioning compressor main shafts, after the three automobile air-conditioning compressor main shafts are subjected to cleaning treatment, comparison experiments of service life and manufacturing time of the three automobile air-conditioning compressor main shafts and a common automobile air-conditioning compressor main shaft are carried out, as shown in table 1, through laboratory tests, the shortest service life of three examples is 8.7 years, the service life is increased by 4.4 years compared with the comparison example, in the example, the longest manufacturing time is 2.3 hours, and the service life is reduced by 0.8 hour compared with the comparison example.
Table 1: comparison table of service life and manufacturing time of compressor main shaft and comparative example
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
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 (8)
1. A rough machining process of a main shaft of an air conditioner compressor of a new energy automobile is characterized by comprising the following steps of: the method specifically comprises the following steps:
step 1: basic processing of working equipment and related materials: the working equipment is electrified and then is comprehensively checked, after the working equipment is completely qualified, the equipment is electrified and enters a standby state, the materials participating in operation are distinguished, and qualified materials are selected;
step 2: primary processing of a compressor main shaft: clamping a main shaft of the compressor, then primarily cutting a blank raw material of the main shaft of the compressor, and performing primary flaw detection on the cut blank raw material to collect a qualified product;
and step 3: and (3) overall processing of the compressor main shaft: carrying out surface grinding on the collected spindle blank material, carrying out surface grinding by using a grinding wheel of 40-80 meshes, then putting the ground spindle into a calcining furnace for heating to 900-;
and 4, step 4: standard rough machining of compressor main shaft: punching a compressor main shaft which is qualified through detection, primarily drilling a small hole on the surface of the compressor main shaft after the compressor main shaft is clamped by using a clamping jaw, expanding and continuously drilling the small hole after the small hole is successfully drilled, drilling the small hole into a large hole, then detecting the smoothness of the inner surface of the large hole, and immediately performing secondary operation on a non-smooth position until the inner surface of the large hole is smooth once unqualified operation is found;
and 5: rough machining subsequent treatment of the main shaft of the compressor: performing thread machining on the surface of the compressor spindle qualified in rough machining inspection, then comprehensively polishing the surface of the compressor spindle, tapping the surface of the compressor spindle completely polished by using a screw tap and a twisting bar, performing key groove milling operation on the surface of the compressor spindle, and performing comprehensive flaw detection operation on the compressor spindle after the complete operation is finished;
step 6: relevant inspection and packaging of the compressor main shaft: and carrying out dynamic balance on the roughly machined compressor main shaft, and carrying out air bag packaging on the detected compressor main shaft and putting the detected compressor main shaft into a warehouse.
2. The rough machining process of the main shaft of the air-conditioning compressor of the new energy automobile according to claim 1, characterized by comprising the following steps of: in the step 2, the flaw detection mode is magnetic particle flaw detection.
3. The rough machining process of the main shaft of the air-conditioning compressor of the new energy automobile according to claim 1, characterized by comprising the following steps of: and in the step 3, when the grinding wheel is used for grinding, the grinding is carried out for 5 minutes every time, and the rest is carried out for 2 minutes.
4. The rough machining process of the main shaft of the air-conditioning compressor of the new energy automobile according to claim 1, characterized by comprising the following steps of: and in the step 3, when the spline is extruded, the roller is prevented from being wound by a sticking roller.
5. The rough machining process of the main shaft of the air-conditioning compressor of the new energy automobile according to claim 1, characterized by comprising the following steps of: in the step 3, when the spindle is detected, ultrasonic flaw detection is used and the mechanical property of the spindle is detected.
6. The rough machining process of the main shaft of the air-conditioning compressor of the new energy automobile according to claim 1, characterized by comprising the following steps of: and in the step 5, a numerical control machine is adopted to carry out thread machining on the main body.
7. The rough machining process of the main shaft of the air-conditioning compressor of the new energy automobile according to claim 1, characterized by comprising the following steps of: in the step 6, the rigidity dynamic balance adjustment is performed on the main shaft.
8. The rough machining process of the main shaft of the air-conditioning compressor of the new energy automobile according to claim 1, characterized by comprising the following steps of: and in the step 6, a dust-free packaging chamber is adopted for adjustment when the main shaft is packaged.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010930752.3A CN112276479A (en) | 2020-09-07 | 2020-09-07 | Rough machining process for main shaft of air-conditioning compressor of new energy automobile |
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| CN202010930752.3A CN112276479A (en) | 2020-09-07 | 2020-09-07 | Rough machining process for main shaft of air-conditioning compressor of new energy automobile |
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Application publication date: 20210129 |