CN111822951B - Processing method of aluminum-based silicon carbide receiving cylinder - Google Patents
Processing method of aluminum-based silicon carbide receiving cylinder Download PDFInfo
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- CN111822951B CN111822951B CN202010638030.0A CN202010638030A CN111822951B CN 111822951 B CN111822951 B CN 111822951B CN 202010638030 A CN202010638030 A CN 202010638030A CN 111822951 B CN111822951 B CN 111822951B
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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
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
Abstract
The invention discloses a processing method of an aluminum-based silicon carbide receiving barrel, which comprises the following processing steps: the method comprises the following steps: the receiving cylinder blank is clamped and fixed by a tool fixture, the tool fixture comprises a rotating ring and a plurality of studs inserted into the rotating ring in a threaded manner, the receiving cylinder blank is firstly hoisted by hoisting equipment during clamping, then one end of the receiving cylinder blank is sent into the rotating ring, and then the position of the receiving cylinder blank is observed while the studs are rotated. Has the advantages that: the processing method of the aluminum-based silicon carbide receiving cylinder adopts a brand new processing technology, can eliminate the residual stress in the aluminum-based silicon carbide material in time through multiple times of artificial aging treatment in the processing process, ensures the stability of the size of the receiving cylinder, is beneficial to improving the processing precision, has a simple structure of a tool clamp used in a matching way, and ensures that each stud works independently without mutual influence regardless of whether a blank of the receiving cylinder is a standard cylinder or not.
Description
Technical Field
The invention relates to the field of aerospace processing, in particular to a processing method of an aluminum-based silicon carbide receiving cylinder.
Background
The aluminum-based silicon carbide is a short name for the aluminum-based silicon carbide particle reinforced composite material, fully combines different advantages of silicon carbide ceramics and metallic aluminum, and has high thermal conductivity, thermal expansion coefficient matched with a chip, small density, light weight, high hardness and high bending strength. The material is outstanding in the new generation of electronic packaging materials, meets the requirements of light weight, high density and the like of packaging, is particularly suitable for the fields of aviation, aerospace, high-speed rail, microwave and the like, is a preferred material for solving the problem of thermal management, and is particularly widely applied to the field of aerospace with higher requirements on heat resistance and deformation.
At present, the receiving cylinder of the telescope installed on the satellite generally adopts the preparation of aluminium base carborundum, because the inside spare part of receiving cylinder is more, work heat production is great, consequently, the receiving cylinder still need possess good heat dispersion under the prerequisite of guaranteeing sufficient intensity, this makes the processing of receiving cylinder more troublesome, and it has carborundum hard particle to dope in the aluminium base carborundum material, carborundum content is higher, the material just is harder and more fragile, consequently, the processing degree of difficulty is very big, process with traditional technology and melt aluminium alloy matrix part with aluminium base carborundum very easily, generate the build up of night tumour, then make cutter wearing and tearing blunt, cause the inside and outside roughness of receiving cylinder to descend, form and position tolerance is difficult to guarantee.
In addition, the receiving cylinder is large in size and heavy in weight, the diameter of the receiving cylinder can reach one meter, the length of the receiving cylinder can reach 2-3 meters, the traditional tool clamp is difficult to use, meanwhile, aging treatment needs to be carried out for many times in the process of machining the receiving cylinder, the receiving cylinder is frequently disassembled and assembled, the traditional tool clamp is troublesome to disassemble and assemble, the receiving cylinder needs to be accurately aligned in each installation, time and labor are wasted, and errors are large.
Disclosure of Invention
The invention aims to solve the problems and provides a processing method of an aluminum-based silicon carbide receiving tube, which adopts a brand new processing technology, can eliminate residual stress in the aluminum-based silicon carbide material in time through multiple times of artificial aging treatment in the processing process, ensures the stability of the size of the receiving tube, is beneficial to improving the processing precision, has a simple structure of a tool clamp used in a matching way, can quickly clamp and find the receiving tube, is convenient to disassemble and assemble, has good practicability, and is explained in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a processing method of an aluminum-based silicon carbide receiving cylinder, which comprises the following processing steps:
the method comprises the following steps: with frock clamp with receiving cylinder blank clamp tight fixed, frock clamp includes rotatory circle and many double-screw bolts of screw grafting on rotatory circle, when pressing from both sides tightly, hangs the receiving cylinder blank with lifting means earlier, then sends the one end of receiving cylinder blank into rotatory circle in, later on one side rotatory double-screw bolt observes the position of receiving cylinder blank, treat that the receiving cylinder blank removes when the central axis of self coincides with the central axis of rotatory circle, many double-screw bolts just press from both sides the tight fixed with the receiving cylinder blank:
step two: roughly turning, namely roughly turning the outer circle, the through hole and the rectangular slot hole of a receiving cylinder blank by using a special tool according to the design size to form a semi-finished product receiving cylinder with a disc in the middle and cylinders at two ends;
step three: finely turning a semi-finished product receiving cylinder according to the design size;
step four: a plurality of mills, namely milling through holes on a disc of the semi-finished product receiving cylinder and milling rectangular slotted holes on a cylinder of the semi-finished product receiving cylinder;
step five: deburring, namely deburring by using deburring pliers to remove burrs in the through hole and the rectangular slotted hole;
step six: and (5) checking, namely checking whether the size of the finished receiving barrel is qualified or not by contrasting with a processing drawing.
As the important design of present case, the receiving cylinder blank needs to carry out artifical aging treatment before preparing clamping fixed with before the finish turning, and the step of handling for the first time is: heating the receiving cylinder blank to 490 ℃, then preserving heat for 3 hours, then carrying out water cooling, taking out the receiving cylinder blank when the temperature of the receiving cylinder blank is reduced to 190 ℃, and preserving heat for 8 hours; the second treatment comprises the following steps: heating the temperature of the semi-finished product receiving cylinder to 600 ℃, then preserving heat for 1 hour, then carrying out oil cooling, taking out the semi-finished product receiving cylinder when the temperature of the semi-finished product receiving cylinder is reduced to 300 ℃, and preserving heat for 2 hours.
As the optimization design of the scheme, when the blank is manufactured in the second step, the allowance of the two ends of the blank receiving cylinder is 2 mm.
As the optimal design of present case, receive a section of thick bamboo blank and carry out half finish turning earlier after the rough turning and carry out the finish turning again, the both ends allowance of receiving a section of thick bamboo blank is 0.5mm when half finish turning and finish turning.
The invention also provides a tool clamp for processing the aluminum-based silicon carbide receiving barrel, which comprises a workbench and a rotating plate horizontally and rotatably arranged on the workbench, wherein an installation ring is arranged on the rotating plate, a rotating ring is rotatably arranged in the installation ring, and a plurality of studs which are in central symmetrical distribution are inserted in the rotating ring in a threaded manner.
As the optimized design of the scheme, the gear ring is coaxially fixed on the rotating ring, and the tool clamp comprises a brake motor for driving the gear ring and the rotating plate to rotate.
As the optimized design of the scheme, the rotating plate is provided with a rotating shaft which is coaxial with the rotating plate, the rotating shaft is inserted on the workbench in a rolling mode, and the brake motor is in transmission connection with the rotating shaft.
As the optimal design of the scheme, the studs are arranged along the radial direction of the rotating ring, threaded holes for the studs to be inserted are formed in the outer circumferential surface of the rotating ring, and the threaded holes are through holes.
Has the advantages that: the processing method of the aluminum-based silicon carbide receiving tube adopts a brand new processing technology, the residual stress in the aluminum-based silicon carbide material can be eliminated in time through multiple times of artificial aging treatment in the processing process, the dimensional stability of the receiving tube is ensured, the processing precision is improved, the matched tool clamp has a simple structure, each stud works independently and does not influence each other, the tool clamp can quickly clamp the receiving tube and ensure that the central axis of the receiving tube blank is superposed with the rotation center of the tool clamp, the alignment is simple, convenient and quick, particularly, the receiving tube is disassembled during later artificial aging treatment, only one stud needs to be disassembled, other studs are not moved, and therefore, when the receiving tube is clamped again, the central axis of the receiving tube blank is superposed with the rotation center of the tool clamp, the assembly and disassembly at every time do not need to spend a large amount of time for alignment, the processing time is effectively saved, the assembly and disassembly are rapid, simple and convenient, and the practicability is good.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view of a tooling fixture;
FIG. 2 is a top view of the tooling fixture;
FIG. 3 is a left side view of the tooling fixture;
FIG. 4 is a cross-sectional view of FIG. 3;
fig. 5 is a finished view of the receiving cylinder.
The reference numerals are explained below:
1. a work table; 2. a brake motor; 3. installing a ring; 4. a rotating ring; 5. a ring gear; 6. a retainer ring; 7. receiving a barrel blank; 8. a rotating plate; 9. a rotating shaft; 10. a threaded hole; 11. a stud; 12. a disc; 13. a cylinder; 14. a through hole; 15. rectangular slotted hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The invention provides a processing method of an aluminum-based silicon carbide receiving cylinder, which comprises the following processing steps:
the method comprises the following steps: the receiving cylinder blank 7 is clamped and fixed by a tool fixture, the receiving cylinder blank 7 is in a cylinder-like 13 shape, the surface of the receiving cylinder blank 7 is not a standard cylinder, the receiving cylinder blank is difficult to be firmly fixed by adopting the traditional tool fixture, and the receiving cylinder blank 7 needs to spend a lot of time for alignment after being dismounted and remounted every time, namely, the central axis of the receiving cylinder blank 7 is overlapped with the central axis of the rotating ring 4, time and labor are wasted, the alignment found every time cannot be completely overlapped with the previous alignment, and small errors exist more or less, which has little influence on common machining, but for the aluminum silicon carbide receiving cylinder for aerospace, the small errors have great influence on the overall sealing effect of the assembled aerospace telescope in future, so that the error requirement for machining parts is extremely high, the machining error is reduced, and the use requirement of the aerospace telescope is met, specially design a frock clamp of aluminium base carborundum receiving cylinder processing for adaptation aerospace, this frock clamp includes rotatory circle 4 and the many double-screw bolts 11 of screw grafting on rotatory circle 4, when pressing from both sides tightly, hang receiving cylinder blank 7 with hoisting equipment earlier, then send into rotatory circle 4 with the one end of receiving cylinder blank 7 in, later on one side rotatory double-screw bolt 11 observes receiving cylinder blank 7's position, treat that receiving cylinder blank 7 removes when the central axis of self and the central axis of rotatory circle 4 coincide, many double-screw bolts 11 just press from both sides receiving cylinder blank 7 tight fixedly: the studs 11 on the rotating ring 4 are independent from each other and work independently without influencing each other, whether the outer wall of the receiving cylinder blank 7 is a standard cylinder or not, the tool clamp can quickly clamp the receiving cylinder blank 7 and enable the central axis of the receiving cylinder blank 7 to coincide with the rotating center of the rotating ring 4 of the tool clamp, the alignment is simple, convenient and quick, only one stud 11 needs to be dismounted in the process of dismounting the receiving cylinder during the later-stage artificial aging treatment, preferably, the stud 11 at the upper end of the receiving cylinder is dismounted, and other studs 11 are not moved, so that when the receiving cylinder is remounted, the central axis of the receiving cylinder blank 7 is still coincident with the rotating center of the tool clamp, the alignment is not required to be carried out again, the problem that the alignment found at each time is not completely coincident with the previous alignment does not exist, the positioning error is greatly reduced, and the use requirement of high sealing performance of the receiving cylinder by an aerospace telescope is met, because the dismouting all need not to spend a large amount of time at every turn and find the accuracy, consequently can effectively practice thrift process time, promote machining efficiency, the dismouting is rapid, simple, convenient, and the practicality is good.
Step two: roughly turning, roughly turning the outer circle, the through hole 14 and the rectangular slot hole 15 of the receiving cylinder blank 7 by using a special tool according to the design size to form a semi-finished product receiving cylinder with a disc 12 in the middle and cylinders 13 at two ends, wherein the special tool preferably adopts an ultrafine particle hard alloy tool; the allowance of the cylinders 13 at the two ends of the receiving cylinder blank 7 in the rough turning process is 2 mm;
step three: semi-finish turning, namely semi-finish turning a semi-finished product receiving cylinder according to the design size, wherein the allowance of cylinders 13 at two ends of a receiving cylinder blank 7 in the semi-finish turning process is 0.5 mm;
step four: finely turning, namely finely turning the semi-finished product receiving cylinder according to the design size, wherein the allowance of cylinders 13 at two ends of the receiving cylinder blank 7 in the finely turning process is 0.5 mm;
step five: a plurality of mills, namely milling through holes 14 on a disc 12 of the semi-finished product receiving cylinder, and then milling rectangular slotted holes 15 on a cylinder 13 of the semi-finished product receiving cylinder to form a receiving cylinder finished product, as shown in fig. 5;
step five: deburring, namely deburring by using a deburring clamp to remove burrs in the through hole 14 and the rectangular groove hole 15;
step six: and (5) checking, namely checking whether the size of the finished receiving barrel is qualified or not by contrasting with a processing drawing.
In order to prevent the receiving cylinder from deforming under the action of residual stress in the machining process, the receiving cylinder blank 7 needs to be subjected to artificial aging treatment before clamping and fixing and finish turning are prepared, and the residual stress in the aluminum-based silicon carbide material is eliminated, so that the stability of the size of the receiving cylinder is ensured, and the machining precision is improved;
specifically, the first treatment comprises the following steps: firstly, heating the receiving cylinder blank 7 to 490 ℃, then preserving heat for 3 hours, then carrying out water cooling, taking out the receiving cylinder blank 7 when the temperature is reduced to 190 ℃, and preserving heat for 8 hours;
the second treatment comprises the following steps: heating the temperature of the semi-finished product receiving cylinder to 600 ℃, then preserving heat for 1 hour, then carrying out oil cooling, taking out the semi-finished product receiving cylinder when the temperature of the semi-finished product receiving cylinder is reduced to 300 ℃, and preserving heat for 2 hours.
As shown in figures 1-4, in order to reduce the processing error of the receiving cylinder and meet the use requirement of the aerospace telescope on the sealing performance, the tool clamp provided by the invention is specially designed, the tool clamp comprises a workbench 1 and a rotating plate 8 horizontally and rotatably mounted on the workbench 1, preferably, the workbench 1 and the rotating plate 8 are cylindrical, a mounting ring 3 is mounted on the rotating plate 8, the mounting ring 3 is vertically fixed on the upper surface of the rotating plate 8, a rotating ring 4 is rotatably mounted in the mounting ring 3, the rotating ring 4 is coaxial with the mounting ring 3, the rotating ring 4 and the mounting ring 3 can be in rolling connection through a bearing, a plurality of studs 11 which are symmetrically distributed in the center are inserted in the rotating ring 4 in a threaded manner, the studs 11 are arranged along the radial direction of the rotating ring 4, and threaded holes 10 for the insertion of the studs 11 are arranged on the outer circumferential surface of the rotating ring 4, the threaded hole 10 is a through hole 14, threads in the threaded hole 10 are self-locking and anti-loosening threads, the stud 11 is located at one end of the rotating ring 4, the mounting ring 3 is located in the middle of the rotating ring 4, the other end of the rotating ring 4 is tightly sleeved with the retaining ring 6, and as shown in fig. 4, the retaining ring 6 is arranged for limiting the mounting ring 3 and preventing the rotating ring 4 from falling off from the mounting ring 3.
A gear ring 5 is fixed on the rotating ring 4, the gear ring 5 is coaxial with the rotating ring 4, at the moment, the tool clamp further comprises a brake motor 2 for driving the gear ring 5 and the rotating plate 8 to rotate, as shown in fig. 1-4, a rotating shaft 9 coaxial with the rotating plate 8 is arranged on the rotating plate 8, the rotating shaft 9 is inserted on the workbench 1 in a rolling mode, the brake motor 2 is in transmission connection with the rotating shaft 9, the brake motor 2 rotates to drive the rotating shaft 9 and the gear ring 5 to rotate, the rotating shaft 9 rotates to drive the rotating plate 8 to rotate, and turning of the receiving cylinder is completed The time consumption is short;
during rough turning, semi-finish turning and finish turning, the brake motor 2 is started firstly to drive the gear ring 5 to rotate, the gear ring 5 rotates to drive the rotating ring 4 to rotate, the rotating ring 4 rotates to drive the receiving cylinder blank 7 to rotate, and then the vehicle can be machined.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (2)
1. The processing method of the aluminum-based silicon carbide receiving cylinder is characterized by comprising the following processing steps of: the method comprises the following steps: with frock clamp with receiving cylinder blank (7) clamp tight fixed, frock clamp includes many double-screw bolts (11) of rotatory circle (4) and screw thread grafting on rotatory circle (4), when pressing from both sides tightly, hang receiving cylinder blank (7) with hoisting equipment earlier, then send into rotatory circle (4) with the one end of receiving cylinder blank (7), later on one side rotatory double-screw bolt (11) observe the position of receiving cylinder blank (7), treat that receiving cylinder blank (7) remove to the central axis of self when coincident with the central axis of rotatory circle (4), many double-screw bolts (11) just press from both sides tightly fixedly with receiving cylinder blank (7): step two: roughly turning, roughly turning the excircle, the through hole (14) and the rectangular slotted hole (15) of a receiving cylinder blank (7) by using a special tool according to the design size to form a semi-finished receiving cylinder with a disc (12) in the middle and cylinders (13) at two ends, wherein the allowance at two ends of the receiving cylinder blank (7) is 2 mm; step three: finely turning a semi-finished product receiving cylinder according to the design size; step four: a plurality of mills, namely milling through holes (14) on a disc (12) of the semi-finished product receiving cylinder and milling rectangular slotted holes (15) on a cylinder (13) of the semi-finished product receiving cylinder; step five: deburring, namely deburring by using deburring pliers to remove burrs in the through hole (14) and the rectangular slotted hole (15); step six: checking, namely checking whether the size of the finished receiving barrel is qualified or not by contrasting with a processing drawing; the receiving cylinder blank (7) is subjected to rough turning and then semi-finish turning and then finish turning, and the allowance at two ends of the receiving cylinder blank (7) is 0.5mm during semi-finish turning and finish turning.
2. The method for processing an aluminum-based silicon carbide receiving canister according to claim 1, wherein: the receiving cylinder blank (7) needs to be subjected to artificial aging treatment before being prepared for clamping and fixing and before finish turning, and the first treatment comprises the following steps: firstly, heating the receiving cylinder blank (7) to 490 ℃, then preserving heat for 3 hours, then carrying out water cooling, taking out the receiving cylinder blank (7) when the temperature is reduced to 190 ℃, and preserving heat for 8 hours; the second treatment comprises the following steps: heating the temperature of the semi-finished product receiving cylinder to 600 ℃, then preserving heat for 1 hour, then carrying out oil cooling, taking out the semi-finished product receiving cylinder when the temperature of the semi-finished product receiving cylinder is reduced to 300 ℃, and preserving heat for 2 hours.
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| CN202010638030.0A CN111822951B (en) | 2020-07-06 | 2020-07-06 | Processing method of aluminum-based silicon carbide receiving cylinder |
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| CN202010638030.0A CN111822951B (en) | 2020-07-06 | 2020-07-06 | Processing method of aluminum-based silicon carbide receiving cylinder |
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| CN111822951B true CN111822951B (en) | 2022-02-01 |
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| KR20110130272A (en) * | 2010-05-27 | 2011-12-05 | 주성대학산학협력단 | Processing of oilless bushing |
| CN102501134A (en) * | 2011-11-01 | 2012-06-20 | 黄河水利职业技术学院 | Ball center positioning attitude adjusting device of horizontal machine tool for ball stubs |
| CN203875351U (en) * | 2014-06-13 | 2014-10-15 | 江苏爱波机械制造有限公司 | Horizontal numerical control machine tool for cutting |
| CN104057321A (en) * | 2014-06-21 | 2014-09-24 | 大大科技(宁国)有限公司 | Inner hole turning auxiliary fixture for cylinder body of hydraulic cylinder |
| CN104607701A (en) * | 2015-02-28 | 2015-05-13 | 苏州古田自动化科技有限公司 | Digital control cam processing machine tool structure |
| CN104858675A (en) * | 2015-05-11 | 2015-08-26 | 南京梅山冶金发展有限公司 | Center bracket of horizontal machine tool and horizontal machine tool provided with center bracket |
| CN107538622B (en) * | 2017-09-30 | 2019-01-25 | 泊头市瑞恒机械有限责任公司 | The processing method of instrument grade aluminum-base silicon carbide structural member |
| CN108145223B (en) * | 2017-11-23 | 2019-07-12 | 江阴市永兴机械制造有限公司 | A kind of processing unit (plant) of outer splines of straightening rollers |
| CN208067797U (en) * | 2018-01-19 | 2018-11-09 | 嘉善爱翔金属制品有限公司 | A kind of drill jig |
| CN208214990U (en) * | 2018-05-09 | 2018-12-11 | 河北环驰轴承制造有限公司 | A kind of portable circular journal bearing grinding device |
| CN108857481B (en) * | 2018-08-21 | 2023-09-15 | 北京新风航天装备有限公司 | Inner hole alignment device and method suitable for machining slender pipe parts |
| CN110900244A (en) * | 2019-11-29 | 2020-03-24 | 友信宏科新能源（徐州）有限公司 | Clamping device is used in processing of new energy automobile part |
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