CN112404904A - Screw rotor double-body machining method and machining device - Google Patents
Screw rotor double-body machining method and machining device Download PDFInfo
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- CN112404904A CN112404904A CN202011259998.9A CN202011259998A CN112404904A CN 112404904 A CN112404904 A CN 112404904A CN 202011259998 A CN202011259998 A CN 202011259998A CN 112404904 A CN112404904 A CN 112404904A
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- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The invention discloses a screw rotor double-body processing method, which comprises the following steps: firstly, roughly processing the length of a raw material of a screw rotor into the length of two screw rotors which are connected into a whole to form a double-body screw rotor; secondly, processing center holes of air inlet end shaft heads at two ends of the double-body screw rotor; thirdly, processing the spirals of the two parts of the double-body screw rotor on a spiral milling machine; fourthly, cutting off the double-body screw rotor which completes the two-part spiral milling process; fifthly, processing center holes on the shaft heads of the exhaust ends of the two independent screw rotors after being cut; sixthly, performing cylindrical grinding and contour grinding processing procedures on the two independent screw rotors cut into pieces to obtain finished screw rotors; the invention also discloses a screw rotor double-body processing device. The invention effectively solves the problem that the small screw rotor can not be processed in the processing process, makes up for the material waste caused by adopting a method of lengthening raw materials, saves the material cost and the manufacturing cost and improves the production efficiency.
Description
Technical Field
The invention belongs to the technical field of production of screw rotors of compressors, and particularly relates to a screw rotor double-body machining method and a screw rotor double-body machining device.
Background
The screw rotor after rough machining needs to be subjected to spiral machining. Because some small screw rotor exhaust end shaft heads are short, when an upper spiral special milling machine is used for machining, a driving head of the spiral milling machine cannot clamp the small screw rotor exhaust end shaft. Even if the screw milling machine can be clamped, the milling cutter disc and the driving head of the screw milling machine form interference when the milling cutter disc is out of the cutter in the process of screw milling, and complete processing cannot be carried out on the screw rotor. At present, a method of lengthening a small-sized screw rotor exhaust end shaft is generally adopted to perform spiral milling on the small-sized screw rotor, after the spiral milling is completed, the small-sized screw rotor exhaust end shaft is cut, and then the processes of external grinding and line grinding are continued.
The conventional method for processing a screw by a small screw rotor has the following defects:
before the screw milling process, the length of the exhaust end shaft of the screw rotor needs to be lengthened in advance when the screw rotor is roughly processed, the lengthened length is 50-60 mm, and after the screw milling is completed, the lengthened part is cut according to the designed actual length of the screw rotor, so that the material cost and the manufacturing cost are increased.
Disclosure of Invention
The invention aims to solve the technical problem that the defects in the prior art are overcome, and the method for machining the double bodies of the screw rotors is provided.
In order to solve the technical problems, the invention adopts the technical scheme that:
a screw rotor double-body processing method comprises the following steps:
step one, roughly processing the length of a raw material of a screw rotor into the length of two screw rotors which are connected into a whole to form a double-body screw rotor; the middle connecting part of the double-body screw rotors is provided with exhaust end shafts of the two screw rotors, and the two ends of the double-body screw rotors are provided with air inlet end shafts of the screw rotors;
secondly, processing center holes of the air inlet end shaft heads at two ends of the double-body screw rotor;
processing the spirals of the two parts of the double-body screw rotor on a spiral milling machine;
cutting off the double-body screw rotor which completes the two-part spiral milling process;
fifthly, processing center holes on the shaft heads of the exhaust ends of the two independent screw rotors after being cut;
and step six, carrying out finish turning, cylindrical grinding and contour grinding processing procedures on the two independent screw rotors cut into two pieces, and processing the two pieces into finished screw rotors.
In the screw rotor double-body processing method, in the first step, sawing and fine processing allowance is left for the length of the exhaust end shafts of the two screw rotors.
The screw rotor double-body processing method comprises the steps of processing two parts of spirals of the double-body screw rotor on a spiral milling machine, processing by adopting a spiral milling machine, clamping an air inlet end shaft at one end of the double-body screw rotor by using a driving head of the spiral milling machine, aligning a central hole with a tip arranged in the driving head for jacking, directing an air outlet end shaft at the other end of the double-screw rotor towards a tailstock of the spiral milling machine, and aligning the central hole at the other end with the tip of the tailstock for jacking; after the spiral processing of one part of the double-body screw rotor is finished, the double-body screw rotor is turned over by 180 degrees and fixed by adopting the same method, and the other part of the spiral is processed.
In the above screw rotor double-body processing method, the double-body screw rotor after the two-part helical milling process is cut in a manner of cutting from the axial center part of the exhaust end shaft connected with the double-body screw rotor in the fourth step.
In the screw rotor double-body processing method, the central hole is processed in the two independent screw rotor exhaust end shaft heads cut in the fifth step, when the central hole is processed in the independent screw rotor exhaust end shaft heads, the screw rotor air inlet end shaft is clamped through the lathe driving head, the screw rotor exhaust end shaft is supported by the central frame, the central hole is processed in the exhaust end shaft head, the tail seat tip is used for propping against the central hole in the exhaust end shaft head, and the exhaust end shaft is cut to the designed size.
The screw rotor double-body processing device comprises a driving head connected with a driving head of a spiral milling machine, a hydraulic tailstock arranged at the tail end of the spiral milling machine, and a milling cutter head driving mechanism arranged above the spiral milling machine and positioned between the driving head and the hydraulic tailstock, wherein a driving head tip is arranged in an inner cavity of the driving head, one side of the hydraulic tailstock facing the driving head is connected with the tailstock tip, the milling cutter head driving mechanism is connected with a mandrel, a milling cutter head and a gasket are sleeved on the mandrel, and the milling cutter head is positioned below the gasket.
According to the screw rotor double-body processing device, the hydraulic tailstock and the center of the driving head are consistent in height, and the hydraulic tailstock can move and be fixed axially.
Compared with the prior art, the invention has the following advantages:
according to the screw rotor processing method, the raw material of the screw rotor is processed into the length of the double-body screw rotor, and the process of processing the screw rotor spiral by the double-body screw rotor is adopted, so that the problems that the shaft head of the exhaust end of the small screw rotor is short in the processing process, the shaft head of the exhaust end of the small screw rotor cannot be clamped by the driving head of the spiral milling machine, and the screw rotor spiral processing cannot be completed due to the interference of the milling cutter head and the driving head after clamping are effectively solved, the material waste caused by the adoption of the method for lengthening the raw material is made up, the material cost and the manufacturing cost are saved, and the production efficiency is improved.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a block flow diagram of a screw rotor binary processing method of the present invention;
FIG. 2 is a schematic structural diagram of a screw rotor double-body processing device according to the present invention;
FIG. 3 is a schematic view of a double body screw rotor according to the present invention.
Description of reference numerals:
1-screw rotor; 2-a drive head; 3-hydraulic tailstock;
4-a milling cutter disc driving mechanism; 5, driving a head tip; 6-tailstock centre;
7-a milling cutter disc; 8, a mandrel; 9-a gasket;
1 a-inlet end of screw rotor; 1 b-screw rotor discharge end.
Detailed Description
Example 1
As shown in fig. 1, the method for processing the double bodies of the screw rotor in the embodiment includes the following steps:
step one, according to the design size of the screw rotors, the length of the raw material of the screw rotors is roughly processed into the length of two screw rotors which are connected into a whole, and the double-body screw rotors are formed. The axial middle parts of the two connected double-body screw rotors are exhaust end shafts of the two screw rotors, the axial two end parts are air inlet end shafts of the double-body screw rotors, and the length of the exhaust end shafts is provided with sawing and exhaust end shaft head finish machining allowance. During processing, the diameter of the spiral part of the double-body screw rotor is processed firstly, the shaft diameters of the air inlet ends at two ends of the double-body screw rotor are processed, finally, the shaft diameters of two connected air outlet ends at the middle part of the double-body screw rotor are processed, and all processing parts are finished by two processes of rough processing and finish processing.
Secondly, processing center holes of the air inlet end shaft heads at two ends of the double-body screw rotor; and clamping the air inlet end shaft at one end of the double-body screw rotor on a machine tool, and machining a central hole in the air inlet end shaft at the other end. And after the center hole at the other end is machined, the double-screw rotor is turned over by 180 degrees and is continuously clamped on the machine tool, and the center hole is machined in the shaft head at the air inlet end which is clamped for the first time. The machined central hole is used for positioning and supporting the axis of the double-body screw rotor during lathe machining.
Processing the spirals of the two parts of the double-body screw rotor on a spiral milling machine; adopt special spiral milling machine processing man-hour, utilize the air inlet end of spiral milling machine drive head centre gripping binary screw rotor one end to top tightly with the centre bore alignment setting in the drive head, with the tail stock of spiral milling machine tailstock orientation of the exhaust end of the other end of the twin-screw rotor, and top tightly with the centre bore alignment tail stock of the other end. After the spiral processing of one part of the double-body screw rotor is finished, the double-body screw rotor is turned over by 180 degrees and fixed by adopting the same method, and the other part of the spiral is processed.
Cutting off the double-body screw rotor which completes the two-part spiral milling process; the cutting is performed from the axial center portion of the exhaust end shaft connected to the twin screw rotors to form two independent screw rotors.
Fifthly, processing center holes on the shaft heads of the exhaust ends of the two independent screw rotors after being cut; when the central hole of the independent screw rotor exhaust end shaft head is machined, the air inlet end shaft of the screw rotor is clamped through the lathe driving head, the central frame is used for supporting the exhaust end shaft of the screw rotor, the central hole of the exhaust end shaft head is machined firstly, then the tailstock center is used for propping against the central hole of the exhaust end shaft head, the exhaust end shaft is machined, and the exhaust end shaft is cut to the designed size.
And step six, performing subsequent cylindrical grinding and contour grinding processing procedures on the two independent screw rotors cut into pieces, and processing the pieces into finished rotary screw rotors.
Example 2
As shown in fig. 2 to 3, the screw rotor binary processing apparatus of the present embodiment includes a driving head 2 connected to a driving head of a screw milling machine, a hydraulic tailstock 3 provided at a tail end of the screw milling machine, and a cutter head driving mechanism 4 provided above the screw milling machine and located between the driving head 2 and the hydraulic tailstock 3.
The driving head tip 5 is arranged in the inner cavity of the driving head 2, the driving head tip 5 is used for supporting and positioning the shaft head at one end of the screw rotor 1, the driving head 2 utilizes the clamping device to clamp the shaft head at one end of the screw rotor 1, and the screw rotor 1 is driven to rotate when the screw of the screw rotor 1 is processed.
One side that hydraulic tailstock 3 was faced the drive head is connected with tailstock top 6, and tailstock top 6 is concentric with the top 5 axes of drive head for the spindle nose of the support screw rotor 1 other end, axial displacement and fixed can be done to hydraulic tailstock 3, can do the adjustment according to the length of screw rotor 1.
The milling cutter disc driving mechanism 4 is connected with a mandrel 8, the mandrel 8 is sleeved with a milling cutter disc 7 and a gasket 9, and the milling cutter disc 7 is located below the gasket 9. The milling cutter disc driving mechanism 4 is powered by a motor, the spindle 8 drives the milling cutter disc 7 to rotate, the milling cutter disc 7 can be subjected to angle adjustment through the milling cutter disc driving mechanism 4, and the angle of the milling cutter disc 7 can be adjusted according to the machining spiral angle of the screw rotor 1. The height of the axis of the milling cutter disc 7 arranged on the mandrel 8 can be adjusted through the gasket 9, and when the screw of the screw rotor 1 is machined, the height of the center of the milling cutter disc 7 is conveniently adjusted to be consistent with the height of the center of the screw rotor 1.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (7)
1. A screw rotor double-body processing method is characterized by comprising the following steps:
step one, roughly processing the length of a raw material of a screw rotor into the length of two screw rotors which are connected into a whole to form a double-body screw rotor; the middle connecting part of the double-body screw rotors is provided with exhaust end shafts of the two screw rotors, and the two ends of the double-body screw rotors are provided with air inlet end shafts of the screw rotors;
secondly, processing center holes of the air inlet end shaft heads at two ends of the double-body screw rotor;
processing the spirals of the two parts of the double-body screw rotor on a spiral milling machine;
cutting off the double-body screw rotor which completes the two-part spiral milling process;
fifthly, processing center holes on the shaft heads of the exhaust ends of the two independent screw rotors after being cut;
and step six, performing cylindrical grinding and contour grinding processing procedures on the two independent screw rotors cut into pieces to obtain finished screw rotors.
2. A screw rotor doublet processing method according to claim 1, characterized in that: in the first step, sawing and fine machining allowance are reserved for the length of the exhaust end shafts of the two screw rotors.
3. A screw rotor doublet processing method according to claim 1, characterized in that: processing the two-part screw of the double-body screw rotor on a screw milling machine in the third step, processing by adopting a screw milling machine, clamping a gas inlet end shaft at one end of the double-body screw rotor by using a driving head of the screw milling machine, aligning a central hole with a tip arranged in the driving head for jacking, directing a gas outlet end shaft at the other end of the double-screw rotor to a tailstock of the screw milling machine, and aligning the central hole at the other end with the tip of the tailstock for jacking; after the spiral processing of one part of the double-body screw rotor is finished, the double-body screw rotor is turned over by 180 degrees and fixed by adopting the same method, and the other part of the spiral is processed.
4. A screw rotor doublet processing method according to claim 1, characterized in that: and step four, cutting off the double-body screw rotor after the two-part spiral milling process in a mode that the double-body screw rotor is cut off from the axial center part of the exhaust end shaft connected with the double-body screw rotor.
5. A screw rotor doublet processing method according to claim 1, characterized in that: and fifthly, processing center holes in the two independent screw rotor exhaust end shaft heads, clamping the screw rotor air inlet end shaft through a lathe driving head when the independent screw rotor exhaust end shaft head center holes are processed, supporting the screw rotor exhaust end shaft through a center frame, processing the center holes in the exhaust end shaft heads, and then enabling a tailstock center to abut against the center holes in the exhaust end shaft heads to cut the exhaust end shaft to the designed size.
6. A screw rotor double-body processing device for realizing the processing method as claimed in claim 1, which is characterized in that: including driving head (2) of being connected with the screw milling machine driving head, set up hydraulic pressure tailstock (3) at the screw milling machine tail end, set up in the screw milling machine top and be located milling cutter dish actuating mechanism (4) between driving head (2) and hydraulic pressure tailstock (3), be provided with the top (5) of driving head in driving head (2) inner chamber, one side that hydraulic pressure tailstock (3) were towards driving head (2) is connected with tailstock top (6), be connected with dabber (8) on milling cutter dish actuating mechanism (4), the cover is equipped with milling cutter dish (7) and gasket (9) on dabber (8), milling cutter dish (7) are located gasket (9) below.
7. The screw rotor binary processing plant of claim 6, characterized in that: the height of the hydraulic tailstock (3) is consistent with that of the center of the driving head (2), and the hydraulic tailstock (3) can move and be fixed in the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011259998.9A CN112404904B (en) | 2020-11-12 | 2020-11-12 | Screw rotor double-body machining method and machining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011259998.9A CN112404904B (en) | 2020-11-12 | 2020-11-12 | Screw rotor double-body machining method and machining device |
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| Publication Number | Publication Date |
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| CN112404904A true CN112404904A (en) | 2021-02-26 |
| CN112404904B CN112404904B (en) | 2023-04-07 |
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| CN202011259998.9A Active CN112404904B (en) | 2020-11-12 | 2020-11-12 | Screw rotor double-body machining method and machining device |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB120765A (en) * | 1917-11-20 | 1918-11-20 | Russell David England | Method for the Manufacture of Aircraft Propellers and Aircraft Members. |
| US4505279A (en) * | 1983-08-08 | 1985-03-19 | Sperry Corporation | Staggered spiral rasp bar segments for axial flow combines |
| JP2004225532A (en) * | 2004-05-20 | 2004-08-12 | Fumio Hoshi | Steel sheet pile driving method and auger drilling pile driver |
| CN104259595A (en) * | 2014-08-14 | 2015-01-07 | 梧州市旺捷机械制造有限公司 | Spline machining tool |
| CN107470868A (en) * | 2017-09-21 | 2017-12-15 | 无锡锡压压缩机有限公司 | A kind of screw rotor production technology |
| CN110125493A (en) * | 2019-06-20 | 2019-08-16 | 苏州市航宝科技技术有限公司 | A kind of elongated thread segmental machining method |
| CN209303846U (en) * | 2018-11-23 | 2019-08-27 | 扬州大学 | A kind of device of Milling Process screw rod |
-
2020
- 2020-11-12 CN CN202011259998.9A patent/CN112404904B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB120765A (en) * | 1917-11-20 | 1918-11-20 | Russell David England | Method for the Manufacture of Aircraft Propellers and Aircraft Members. |
| US4505279A (en) * | 1983-08-08 | 1985-03-19 | Sperry Corporation | Staggered spiral rasp bar segments for axial flow combines |
| JP2004225532A (en) * | 2004-05-20 | 2004-08-12 | Fumio Hoshi | Steel sheet pile driving method and auger drilling pile driver |
| CN104259595A (en) * | 2014-08-14 | 2015-01-07 | 梧州市旺捷机械制造有限公司 | Spline machining tool |
| CN107470868A (en) * | 2017-09-21 | 2017-12-15 | 无锡锡压压缩机有限公司 | A kind of screw rotor production technology |
| CN209303846U (en) * | 2018-11-23 | 2019-08-27 | 扬州大学 | A kind of device of Milling Process screw rod |
| CN110125493A (en) * | 2019-06-20 | 2019-08-16 | 苏州市航宝科技技术有限公司 | A kind of elongated thread segmental machining method |
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| CN112404904B (en) | 2023-04-07 |
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