CN113798883B - Machining tool and machining method for outer surface of thin-wall deep cavity cover piece - Google Patents
Machining tool and machining method for outer surface of thin-wall deep cavity cover piece Download PDFInfo
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- CN113798883B CN113798883B CN202111160854.2A CN202111160854A CN113798883B CN 113798883 B CN113798883 B CN 113798883B CN 202111160854 A CN202111160854 A CN 202111160854A CN 113798883 B CN113798883 B CN 113798883B
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- 238000003754 machining Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims description 11
- 238000003672 processing method Methods 0.000 claims abstract description 5
- 238000003801 milling Methods 0.000 claims description 13
- 238000005520 cutting process Methods 0.000 claims description 4
- 230000003746 surface roughness Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 241000446313 Lamella Species 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 229910001063 inconels 617 Inorganic materials 0.000 description 3
- 229910000601 superalloy Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- 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
-
- 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)
- Milling Processes (AREA)
Abstract
The invention relates to a processing tool and a processing method for the outer surface of a thin-wall deep cavity cover piece, and belongs to the technical field of advanced manufacturing. The processing tool structure is designed into an internal stay structure tool, the tool is divided into upper and lower parts, left and right parts, the whole appearance accords with an internal profile, an internal stay threaded hole is formed in each divided part and used for installing an internal stay screw rod, and the internal stay screw rod is adjusted to enable the tool to be completely supported and attached with the internal profile of a processing part. During machining, the molded surface to be machined is milled according to the tool split area, the fit degree of the split tool and the inner surface support of the machining area can be adjusted at any time during machining, machining yield is reduced, rebound is avoided, and wall thickness precision is improved. The invention is mainly used for meeting the development requirements of special-shaped thin wall-changing deep cavity cover parts for certain heat-proof structures and solving the practical engineering problem that the wall thickness precision of thin wall-changing parts is difficult to control.
Description
Technical Field
The invention relates to a processing tool and a processing method for the outer surface of a thin-wall deep cavity cover piece, and belongs to the technical field of advanced manufacturing.
Background
With the development of international situation and military technology, development of some military products with high striking precision, high flying speed and strong outburst prevention capability is urgently required in China. The thrust system of the product needs to be protected by a thermal structure and has lighter weight, so that special shapes (the special shapes refer to cross section views which are not round, oval, square and rectangular) and thin variable-wall deep cavity covers are often adopted, the space of the bottom heat-proof and insulating system can be effectively utilized except for heat-proof and protecting the thrust system, the light weight design is realized, and the purpose of effective weight reduction is achieved. The existing thin-wall deep cavity cover type part profile machining wall thickness precision is low, and the requirement cannot be met.
Disclosure of Invention
The invention aims to solve the problem of low wall thickness precision in the profile processing of variable thin-wall deep cavity cover parts, designs and distinguishes an internal support tool structure, adopts a sectional horizontal milling method corresponding to the tool to perform external surface milling, and thus prepares the thin-wall high-precision parts.
The aim of the invention is achieved by the following technical scheme.
A processing tool for thin-wall deep cavity covers comprises: the left valve tool and the right valve tool are divided into a plurality of sub-valves in the height direction, and the sub-valves of the left valve tool are in one-to-one correspondence with the sub-valves of the right valve tool; screw holes or unthreaded holes are formed in each sub-lobe of the left-lobe tool, correspondingly, unthreaded holes or threaded holes are formed in each sub-lobe of the right-lobe tool, an internal stay screw is arranged between the threaded holes and the unthreaded holes, and the corresponding two sub-lobes are connected and the distance between the two sub-lobes and the supporting strength are adjusted by adjusting the internal stay screw.
Further, the outer molded surfaces of the left valve tool and the right valve tool are consistent with the inner molded surfaces of the thin-wall deep cavity cover products to be processed.
Further, a smooth contact surface is arranged between the sub-petals of the left-petal tool, and the sub-petals which are adjacent up and down can move relatively; smooth contact surfaces are arranged between the sub-petals of the right-petal tool, and the sub-petals which are adjacent up and down can move relatively.
Further, the heights of the sub-petals of the left-petal tool are the same or different, and the heights of the sub-petals of the right-petal tool are the same or different; the heights of the sub-petals corresponding to the left petal tool and the right petal tool are the same.
Further, a 3-5mm interval is arranged between the left valve tool and the right valve tool.
The invention also provides a processing method of the thin-wall deep cavity cover piece, which comprises the following steps:
(1) Internal stay frock structural design: the internal stay frock design that will be used for processing is split structure, includes: the left valve tool and the right valve tool are divided into a plurality of sub-valves in the height direction, and the sub-valves of the left valve tool are in one-to-one correspondence with the sub-valves of the right valve tool; a threaded hole or a light hole is formed in each sub-lobe of the left-lobe tool, correspondingly, a light hole or a threaded hole is formed in each sub-lobe of the right-lobe tool, an internal supporting screw is arranged between the threaded hole and the light hole, the corresponding two sub-lobes are connected, and the distance between the two sub-lobes and the supporting force are adjusted by adjusting the internal supporting screw;
(2) Preparing an inner support tool: an internal support tool blank is integrally processed according to the internal surface of the thin-wall deep cavity cover product to be processed, then split is cut, and a 3-5mm interval is processed between a left split tool and a right split tool; machining threaded holes or smooth holes on sub-petals of the left-petal tool and the right-petal tool, wherein the surface roughness of a blank of the internal support tool is not more than 3.2um;
(3) Internal stay frock clamping: placing the internal support tool in a thin-wall deep cavity cover product to be processed, and adjusting internal support screws on each sub-valve tool to enable each sub-valve tool to be in supporting fit with an internal surface of a processing part;
(4) Profile processing: milling the outer profile by adopting a horizontal milling method; when the outer surface is milled, the outer surface corresponds to the split structure of the inner support tool in the height direction, N sections of processing are performed, and N is the number of sub-split of the inner support tool in the height direction; and (3) adjusting an inner supporting screw on the corresponding sub-identifying tool to enable the sub-valve tool to be completely supported and attached with the inner surface of the processing part every processing section.
Further, when the step (2) is performed with cutting and splitting, the height range of each sub-split is controlled to be 50-100 mm.
Further, the outer molded surfaces of the left valve tool and the right valve tool are consistent with the inner molded surfaces of thin-wall deep cavity cover products to be processed; smooth contact surfaces are arranged between the sub-petals of the left-petal tool, and the sub-petals which are adjacent up and down can move relatively; smooth contact surfaces are arranged between the sub-petals of the right-petal tool, and the sub-petals which are adjacent up and down can move relatively; the heights of the sub-petals of the left-petal tool are the same or different, and the heights of the sub-petals of the right-petal tool are the same or different; the heights of the sub-petals corresponding to the left petal tool and the right petal tool are the same.
Further, the supporting force of the sub-valve tool supported in the processing section can be adjusted at any time in the processing process.
Further, the left valve tooling and the right valve tooling are divided into 2-3 valves in the height direction.
Compared with the prior art, the invention has the beneficial effects that:
(1) The invention is mainly used for solving the practical engineering problem that the wall thickness precision of thin wall thickness-changing parts is difficult to control for the development requirement of special-shaped thin wall thickness-changing deep cavity cover parts for heat-proof structures of certain military products.
(2) When the special-shaped thin wall-changing deep cavity cover piece is processed, the adopted internal support tool cannot be fully attached to each part in the deep cavity, so that the processing error is large, and the high-precision requirement is difficult to meet.
(3) The dividing of the sub-petals can flexibly design the quantity and the height according to the condition of the deep cavity cover, and fine machining is better realized.
Drawings
FIG. 1 is a schematic diagram of a split internal bracing tooling of the present invention;
FIG. 2 is a schematic illustration of a profiled thin wall variable wall thickness superalloy (Inconel 617) cap;
FIG. 3 is a left side view of FIG. 2;
FIG. 4 is a top view of FIG. 2;
FIG. 5 is a B-B cross-sectional view of FIG. 4;
FIG. 6 is a view in the A direction of FIG. 4;
Fig. 7 is a B-direction view of fig. 2.
Detailed Description
The invention is further described below with reference to the drawings and examples.
As shown in fig. 1, the invention provides a processing tool for thin-wall deep cavity cover parts, which comprises: the left valve tool and the right valve tool are divided into a plurality of sub-valves in the height direction, and the sub-valves of the left valve tool are in one-to-one correspondence with the sub-valves of the right valve tool; screw holes or unthreaded holes are formed in each sub-lobe of the left-lobe tool, correspondingly, unthreaded holes or threaded holes are formed in each sub-lobe of the right-lobe tool, an internal stay screw is arranged between the threaded holes and the unthreaded holes, and the corresponding two sub-lobes are connected and the distance between the two sub-lobes and the supporting strength are adjusted by adjusting the internal stay screw.
Preferably, the outer molded surfaces of the left valve tool and the right valve tool are consistent with the inner molded surfaces of the thin-wall deep cavity cover products to be processed.
Preferably, a smooth contact surface is arranged between the sub-petals of the left-petal tool, and the sub-petals adjacent to each other up and down can move relatively; smooth contact surfaces are arranged between the sub-petals of the right-petal tool, and the sub-petals which are adjacent up and down can move relatively.
Preferably, the heights of the sub-petals of the left-petal tool are the same or different, and the heights of the sub-petals of the right-petal tool are the same or different; the heights of the sub-petals corresponding to the left petal tool and the right petal tool are the same.
Preferably, a 3-5mm interval is arranged between the left valve tool and the right valve tool.
According to the tool, the invention provides a processing method of a thin-wall deep cavity cover piece, which comprises the following steps:
(1) Internal stay frock structural design: the internal stay frock design that will be used for processing is split structure, includes: the left valve tool and the right valve tool are divided into a plurality of sub-valves in the height direction, and the sub-valves of the left valve tool are in one-to-one correspondence with the sub-valves of the right valve tool; a threaded hole or a light hole is formed in each sub-lobe of the left-lobe tool, correspondingly, a light hole or a threaded hole is formed in each sub-lobe of the right-lobe tool, an internal supporting screw is arranged between the threaded hole and the light hole, the corresponding two sub-lobes are connected, and the distance between the two sub-lobes and the supporting force are adjusted by adjusting the internal supporting screw;
The outer molded surfaces of the left valve tool and the right valve tool are consistent with the inner molded surfaces of thin-wall deep cavity cover products to be processed; smooth contact surfaces are arranged between the sub-petals of the left-petal tool, and the sub-petals which are adjacent up and down can move relatively; smooth contact surfaces are arranged between the sub-petals of the right-petal tool, and the sub-petals which are adjacent up and down can move relatively; the heights of the sub-petals of the left-petal tool are the same or different, and the heights of the sub-petals of the right-petal tool are the same or different; the heights of the sub-petals corresponding to the left petal tool and the right petal tool are the same.
(2) Preparing an inner support tool: an internal support tool blank is integrally processed according to the internal surface of the thin-wall deep cavity cover product to be processed, then split is cut, and a 3-5mm interval is processed between a left split tool and a right split tool; machining threaded holes or smooth holes on sub-petals of the left-petal tool and the right-petal tool, wherein the surface roughness of a blank of the internal support tool is not more than 3.2um;
when cutting and splitting are carried out, the height range of each sub-lobe is controlled to be 50-100 mm.
(3) Internal stay frock clamping: placing the internal support tool in a thin-wall deep cavity cover product to be processed, and adjusting internal support screws on each sub-valve tool to enable each sub-valve tool to be in supporting fit with an internal surface of a processing part;
(4) Profile processing: milling the outer profile by adopting a horizontal milling method; when the outer surface is milled, the outer surface corresponds to the split structure of the inner support tool in the height direction, N sections of processing are performed, and N is the number of sub-split of the inner support tool in the height direction; and (3) adjusting an inner supporting screw on the corresponding sub-identifying tool to enable the sub-valve tool to be completely supported and attached with the inner surface of the processing part every processing section. The supporting force of the sub-valve tool supported in the processing section can be adjusted at any time in the processing process.
Examples
By adopting the method of the invention, the milling of the outer surface of the special-shaped thin-wall superalloy (Inconel 617) cover of FIG. 2 (wherein FIG. 2 (a) is a model diagram and FIG. 2 (b) is a structural schematic diagram) is completed, and the specific steps are as follows:
(1) The structural design of the tool: according to the figure 1, the internal stay frock that will be used for processing designs into split structure, and the direction of height divides 3 lamella, and the direction divides 2 lamella about, and 6 lamellas altogether set up the screw hole on the right lamella, and the corresponding position sets up the unthreaded hole on the left lamella for install the internal stay screw rod, frock appearance face is unanimous with the interior profile of processing product. The left and top views of the profiled thin wall superalloy (Inconel 617) cap are shown in fig. 3 and 4, respectively. Fig. 5 is a B-B cross-sectional view of fig. 4. Fig. 6 is an a-direction view of fig. 4. Fig. 7 is a B-direction view of fig. 2.
(2) Preparing a tool: and (3) integrally processing a tool blank according to the inner profile of the product, cutting and splitting the tool blank according to the design structure of the step (1), processing an M10 threaded hole on a right-hand tool, and processing a phi 11mm unthreaded hole at a corresponding position on a left-hand tool. A3 mm interval is processed and arranged between the left part and the right part.
(3) Clamping a tool: and placing the internal stay tool in a processed product, adjusting internal stay screws on each petal of tool to enable each petal of tool to be basically supported and attached with an internal surface of a processing part, and then fixing the tool and the product on a workbench surface of a horizontal milling machine tool.
(4) Profile processing: (3) And after the steps are finished, adopting a horizontal milling method to mill the outer profile. During the milling of the outer surface, the milling device corresponds to the split structure of the internal support tool in the height direction, and is divided into 3 sections for processing, wherein the lowest section is processed firstly, then the middle section is processed, and the uppermost section is processed. And (3) adjusting an internal supporting screw on the corresponding resolution tool at each processing section to ensure that the petal tool is completely supported and attached with the internal surface of the processing part until the external surface is processed. The supporting force of the sub-valve tool supported in the processing section can be adjusted at any time in the processing process. The precision of the finally processed hood-shaped product completely meets the requirements and is greatly higher than the processing precision of the prior art.
Claims (3)
1. A processing method of a thin-wall deep cavity cover piece is characterized by comprising the following steps:
(1) Internal stay frock structural design: the internal stay frock design that will be used for processing is split structure, includes: the left valve tool and the right valve tool are divided into a plurality of sub-valves in the height direction, and the sub-valves of the left valve tool are in one-to-one correspondence with the sub-valves of the right valve tool; a threaded hole or a light hole is formed in each sub-lobe of the left-lobe tool, correspondingly, a light hole or a threaded hole is formed in each sub-lobe of the right-lobe tool, an internal supporting screw is arranged between the threaded hole and the light hole, the corresponding two sub-lobes are connected, and the distance between the two sub-lobes and the supporting force are adjusted by adjusting the internal supporting screw;
(2) Preparing an inner support tool: an internal support tool blank is integrally processed according to the internal surface of the thin-wall deep cavity cover product to be processed, then split is cut, and a 3-5mm interval is processed between a left split tool and a right split tool; machining threaded holes or smooth holes on sub-petals of the left-petal tool and the right-petal tool, wherein the surface roughness of a blank of the internal support tool is not more than 3.2um;
(3) Internal stay frock clamping: placing the internal support tool in a thin-wall deep cavity cover product to be processed, and adjusting internal support screws on each sub-valve tool to enable each sub-valve tool to be in supporting fit with an internal surface of a processing part;
(4) Profile processing: milling the outer profile by adopting a horizontal milling method; when the outer surface is milled, the outer surface corresponds to the split structure of the inner support tool in the height direction, N sections of processing are performed, and N is the number of sub-split of the inner support tool in the height direction; each processing section is provided with an internal supporting screw on the corresponding sub-identifying tool, so that the sub-identifying tool is completely supported and attached with the internal surface of the processing part;
the outer molded surfaces of the left valve tool and the right valve tool are consistent with the inner molded surfaces of thin-wall deep cavity cover products to be processed; smooth contact surfaces are arranged between the sub-petals of the left-petal tool, and the sub-petals which are adjacent up and down can move relatively; smooth contact surfaces are arranged between the sub-petals of the right-petal tool, and the sub-petals which are adjacent up and down can move relatively; the heights of the sub-petals of the left-petal tool are the same or different, and the heights of the sub-petals of the right-petal tool are the same or different; the heights of the sub-petals corresponding to the left petal tool and the right petal tool are the same;
the supporting force of the sub-valve tool supported in the processing section can be adjusted at any time in the processing process.
2. The method for processing the thin-wall deep cavity cover piece according to claim 1, wherein the method comprises the following steps: and (3) when the step (2) is used for cutting and splitting, the height range of each sub-valve is controlled to be 50-100 mm.
3. The method for processing the thin-wall deep cavity cover piece according to claim 1, wherein the method comprises the following steps: the left valve tooling and the right valve tooling are divided into 2-3 valves in the height direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111160854.2A CN113798883B (en) | 2021-09-30 | 2021-09-30 | Machining tool and machining method for outer surface of thin-wall deep cavity cover piece |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111160854.2A CN113798883B (en) | 2021-09-30 | 2021-09-30 | Machining tool and machining method for outer surface of thin-wall deep cavity cover piece |
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| Publication Number | Publication Date |
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| CN113798883A CN113798883A (en) | 2021-12-17 |
| CN113798883B true CN113798883B (en) | 2024-05-14 |
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| CN202111160854.2A Active CN113798883B (en) | 2021-09-30 | 2021-09-30 | Machining tool and machining method for outer surface of thin-wall deep cavity cover piece |
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| CN114211189A (en) * | 2021-12-30 | 2022-03-22 | 武汉武船重型装备工程有限责任公司 | Method for machining high-precision inner molded surface |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202943409U (en) * | 2012-11-30 | 2013-05-22 | 航宇救生装备有限公司 | Adjustable inner circle supporting tool |
| CN207127535U (en) * | 2017-08-25 | 2018-03-23 | 西北锆管有限责任公司 | A kind of thin-wall pipes cut-out fixture |
| CN107984248A (en) * | 2016-10-27 | 2018-05-04 | 北京遥感设备研究所 | A kind of Thin-wall Revolving Part endoporus support device |
| CN111151965A (en) * | 2020-01-20 | 2020-05-15 | 航天海鹰(哈尔滨)钛业有限公司 | Adjustable profile inner support welding tool and using method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8333388B2 (en) * | 2008-09-15 | 2012-12-18 | Xerox Corporation | Expandable belt mandrel |
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- 2021-09-30 CN CN202111160854.2A patent/CN113798883B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202943409U (en) * | 2012-11-30 | 2013-05-22 | 航宇救生装备有限公司 | Adjustable inner circle supporting tool |
| CN107984248A (en) * | 2016-10-27 | 2018-05-04 | 北京遥感设备研究所 | A kind of Thin-wall Revolving Part endoporus support device |
| CN207127535U (en) * | 2017-08-25 | 2018-03-23 | 西北锆管有限责任公司 | A kind of thin-wall pipes cut-out fixture |
| CN111151965A (en) * | 2020-01-20 | 2020-05-15 | 航天海鹰(哈尔滨)钛业有限公司 | Adjustable profile inner support welding tool and using method |
Non-Patent Citations (1)
| Title |
|---|
| 环形薄壁件加工中的胀紧减振夹具设计;赵运航;潘宝山;罗敏;;中国新技术新产品(09);第141页 * |
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