CN110321607B - Sectional type chemical milling sample plate preparation method - Google Patents
Sectional type chemical milling sample plate preparation method Download PDFInfo
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- CN110321607B CN110321607B CN201910540980.7A CN201910540980A CN110321607B CN 110321607 B CN110321607 B CN 110321607B CN 201910540980 A CN201910540980 A CN 201910540980A CN 110321607 B CN110321607 B CN 110321607B
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Abstract
A sectional type chemical milling sample plate preparation method comprises the steps of opening a part process model in CATIA software according to the requirements of a chemical milling process model and the customization requirements of the chemical milling sample plate, and adding process elements consisting of a sample plate row bit line, a segmentation line, a sample plate positioning hole, chemical milling allowance and an allowance line to obtain the chemical milling process model; various scribed lines on the chemical milling process model are designed on a sample plate material thickness dimension surface inward from a mold surface, a sample plate line position line is indispensable, a sample plate positioning hole consistent with a drawing mold positioning hole in position is arranged on the sample plate material thickness dimension surface and used for positioning the chemical milling sample plate in the scribing process on a chemical milling skin, and then the sample plate material thickness dimension surface is designed in a segmented mode according to requirements, so that the segmented chemical milling sample plate is obtained, the segmented chemical milling sample plate can be directly used for designing a skin part chemical milling sample plate with large curvature change and large area, and the design period of the complex milling sample plate and the forming period efficiency of the complex milling skin part are greatly improved.
Description
Technical Field
The invention relates to the technical field of electrical testing, in particular to a sectional type chemical milling sample plate preparation method.
Background
For parts with thin walls, large areas and large curvature changes, the groove structure is usually subjected to corrosion forming by a chemical milling processing mode in the actual processing process, and the chemical milling sample plate is an essential special tool in the chemical milling process and is used for the groove milling process after blanking and stretch forming of the parts.
The chemical milling sample plate is usually formed by drawing an aluminum plate with the material mark LY12 and the thickness of 1.2mm on a die, then scribed by a three-dimensional machine tool, and finally formed by cutting a notch by a bench worker, the chemical milling sample plate forms various processing stresses in the complex forming process, the chemical milling sample plate with large curvature change and large area is directly not attached to the die, the chemical milling sample plate can be attached to the die only by repeated shape correction, and the problem that the chemical milling sample plate is not attached to the die greatly influences the processing progress of the chemical milling part.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method for preparing a sectional type chemical milling template, so as to solve the problems in the background art.
The technical problem solved by the invention is realized by adopting the following technical scheme:
a preparation method of a sectional type chemical milling sample plate comprises the following specific steps:
step one) designing chemical milling process model
Opening a part process model in CATIA software according to the requirements of a chemical milling process model and the customization requirements of a chemical milling sample plate, and adding process elements consisting of a sample plate line bit line, a segmentation line, a sample plate positioning hole, a chemical milling allowance and a allowance line to obtain the chemical milling process model;
step two) designing chemical milling sample plate
And designing various scribed lines on the chemical milling process model on a sample plate material thickness dimension surface inwards from the mold surface, wherein a sample plate line is necessary, arranging a sample plate positioning hole with the position consistent with that of the drawing mold positioning hole on the sample plate material thickness dimension surface, positioning the chemical milling sample plate in the scribing process on a chemical milling skin, and then designing the sample plate material thickness dimension surface in a segmented mode according to requirements to obtain the segmented chemical milling sample plate.
In the invention, in the step one), at the transition of the curvature of the skin, the shape butt joint line of the process surface of the part and a parallel line which is constant along the outer shape surface of the skin and the arc length of the skin butt joint line are taken as a segmentation line.
In the invention, in the step one), the edge lines of the chemically milled area are designed to be sample plate row bit lines at equal intervals inwards and with constant length.
In the invention, in the step one), the edge line of the part is outwards designed into a chemical milling allowance line in an equal-thickness fixed-value length mode, and the chemical milling allowance line is marked.
In the invention, in the second step), the chemical milling template is etched into the template row bit line, and the specific flow is as follows:
(1) determining the working surface of a chemical milling area
The chemical milling sample plate is attached to the highest surface of the chemical milling part, a segmented three-dimensional chemical milling sample plate is designed according to a segmentation line of a chemical milling process model, and the front surface of the chemical milling sample plate is on a chemical milling groove surface;
(2) design chemical milling sample plate line and position line
Setting a compensation margin value at the edge of a chemical milling area according to the milling speed of chemical milling processing, and determining the edge line of the chemical milling area containing the compensation margin as a chemical milling sample plate line bit line;
(3) supplemented chemical milling sample plate
According to the rigidity requirement of a chemical milling sample plate and the convenience of scribing in a workshop, the width of a supplementing position of a designed milling groove is about 40mm, and a small quadrilateral notch with the length and the width of about 15mm is formed in the supplementing position for the convenience of the chemical milling workshop;
(4) determining non-working edges
The position of the sectional line of the chemical milling sample plate is used as a non-working edge, so that the chemical milling workshop is convenient to line, and small notches are formed at the two ends of the chemical milling groove.
Has the advantages that: the invention provides a design method of a sectional type chemical milling sample plate, which can be directly used for designing a chemical milling sample plate of a skin part with large curvature change and large area, greatly facilitates the design of the complex chemical milling sample plate, and greatly improves the design cycle of the complex chemical milling sample plate and the forming cycle efficiency of the complex chemical milling skin part.
Drawings
FIG. 1 is a schematic view of a skin part process model in a preferred embodiment of the invention.
FIG. 2 is a schematic diagram of the structure of the blank and the drawing die in the preferred embodiment of the invention.
FIG. 3 is a schematic diagram of a chemical milling process model according to a preferred embodiment of the present invention.
FIG. 4 is a schematic diagram of a chemical milling template in accordance with a preferred embodiment of the present invention.
Fig. 5 isbase:Sub>A cross-sectional view taken atbase:Sub>A-base:Sub>A in fig. 4.
FIG. 6 is a schematic view of a 1/2 milling template in the preferred embodiment of the present invention.
FIG. 7 is a schematic view of a 2/2 milling template in the preferred embodiment of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
A sectional type chemical milling sample plate preparation method comprises the following specific steps:
step one) designing chemical milling process model
The process model is a digital model formed after adding process elements on a product model, and is one of data sources of digital manufacturing and mold design;
the chemical milling process model is a special process model established for manufacturing a three-dimensional chemical milling sample plate for a curved surface part, is an original basis for manufacturing the chemical milling sample plate, is a part forming die model formed by adding information such as a sample plate line bit line, a sample plate segmentation line, a chemical milling allowance line and the like on the basis of the part process model and is a three-dimensional entity model established according to a product model and process requirements required by part manufacturing;
according to the requirements of a chemical milling process model and the customization requirements of a chemical milling sample plate, opening a part product model in CATIA software, adding process factors such as a sample plate row bit line, a segmentation line, a sample plate positioning hole, a chemical milling allowance line and a allowance line, and designing the chemical milling process model;
step two) designing chemical milling sample plate
The method for processing the chemical milling sample plate by the numerical control line belongs to surface substitution, and for parts which are steep and have large curvature change, the chemical milling sample plate needs to be designed in a mode of increasing sample plate positioning holes and sample plate blocks according to curvature change;
designing a sketch of the chemical milling template according to an expansion drawing, adding a section drawing, and determining the front direction of the chemical milling template, wherein a structural hole is not opened;
the chemical milling sample plate is used for engraving all scribed lines as much as possible, but the process is limited by the difficulty of manually processing the leads on the front surface and the back surface of the sample plate, only the line of the sample plate line is engraved, the line of the sample plate line on the chemical milling sample plate is necessary, and the specific process is as follows:
(1) determining the working surface of a chemical milling area
The parts delivered to the chemical milling workshop are in a state after blank stretching, the parts subjected to chemical milling often have multiple milling layers, a chemical milling sample plate is required to be attached to the highest surface of the chemical milling parts, a segmented three-dimensional chemical milling sample plate is designed according to a segmentation line of a chemical milling process model, and the front surface of the chemical milling sample plate is on the surface of a chemical milling groove;
(2) design chemical milling sample plate line and position line
Setting a compensation margin value at the edge of a chemical milling area according to the milling speed of chemical milling processing, and determining the edge line of the chemical milling area containing the compensation margin as a chemical milling sample plate line bit line;
(3) supplemented chemical milling sample plate
According to the rigidity requirement of a chemical milling sample plate and the convenience of scribing in a workshop, the width of a supplementing position of a designed milling groove is about 40mm, and a small quadrilateral notch with the length and the width of about 15mm is formed in the supplementing position for the convenience of the chemical milling workshop;
(4) determining non-working edges
The position of the sectional line of the chemical milling sample plate is used as a non-working edge, so that the chemical milling workshop is convenient to line, and small notches are formed at the two ends of the chemical milling groove.
Taking a skin part process model as an example:
as shown in fig. 1, the thickness of the blank 4 is 1.5mm, the required milling surfaces are respectively 11 milling grooves 1 with the thickness of 1.0mm, 2 milling grooves 2 with the thickness of 1.2mm and 6 milling edges 3 with the thickness of 1.2mm, and as shown in fig. 2, the blank 4 is firstly formed on a drawing die 5 and then is subjected to chemical milling forming of a local structure;
designing a chemical milling process model: as shown in fig. 3, at the transition of the curvature of the skin, a parallel line with an arc length of 20mm along the outer surface of the skin and a contour butt line of the model surface of the skin part is respectively used as two segment lines 12 of a chemical milling template 1/2 and 2/2, and an edge line 6 of a chemical milling area is designed as a template row bit line with an inward equal distance of 0.8 mm; designing chemical milling allowance and marking a chemical milling allowance line with the outward equal thickness of 55mm of the edge line 7 of the part; designing a sample plate positioning hole 11 consistent with the position of the drawing die positioning hole for positioning the chemical milling sample plate in the process of marking on the chemical milling skin;
designing a chemical milling template:
as shown in fig. 4, the chemical milling sample plate is designed according to the chemical milling process model shown in fig. 3, and the integrated chemical milling sample plate is divided into two sections from a segmentation line, which are respectively named as a 1/2 chemical milling sample plate 8 and a 2/2 chemical milling sample plate 9;
the sketch is designed according to an expansion drawing, two gaps on the product model are filled and filled completely, and a section view 5 is added;
as shown in fig. 1, the inner surface of the part is a chemical milling surface, a chemical milling sample plate is fixed on the inner surface of the part by 6 positioning pins for use, the front surface of the sample plate is a concave surface, and the scribed lines and the lettering on the sample plate are marked on the concave surface;
as shown in fig. 5, a supplemental addition with a width of about 40mm is added at the position of the chemical milling groove with the arc-shaped edge, wherein B is a sample plate row bit line, and C is a non-working edge;
as shown in fig. 5, a small quadrilateral notch with a length and a width of about 15mm is formed at each edge position of the additional groove 10 on the 2/2 chemical milling template 9;
as shown in fig. 5, small notches are formed at the non-working edge position of the segment line on the 1/2 milling template 8 along the two ends of the edge line of the milling groove;
processing a chemical milling sample plate: as shown in fig. 6 and 7, according to a sketch, a worker manually cuts the required gaps on the template according to the scribed lines on the rough template, and processes 1/2 chemical milling templates 8 and 2/2 chemical milling templates 9.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A preparation method of a sectional type chemical milling sample plate is characterized by comprising the following specific steps:
step one) designing chemical milling process model
Opening a part process model in CATIA software according to the requirements of a chemical milling process model and the customization requirements of a chemical milling sample plate, and adding process elements consisting of a sample plate line bit line, a segmentation line, a sample plate positioning hole, a chemical milling allowance and a allowance line to obtain the chemical milling process model;
step two) designing chemical milling sample plate
Designing various scribed lines on the chemical milling process model on a sample plate material thickness dimension surface inward from the mold surface, wherein a sample plate line is necessary, arranging a sample plate positioning hole with the position consistent with that of the drawing die positioning hole on the sample plate material thickness dimension surface, positioning the chemical milling sample plate in the scribing process on a chemical milling skin, and then designing the sample plate material thickness dimension surface in a segmented mode according to requirements to obtain a segmented chemical milling sample plate;
the chemical milling template is carved into a template row bit line, and the specific flow is as follows:
(1) determining the working surface of a chemical milling area
The chemical milling sample plate is attached to the highest surface of the chemical milling part, a segmented three-dimensional chemical milling sample plate is designed according to a segmentation line of a chemical milling process model, and the front surface of the chemical milling sample plate is on a chemical milling groove surface;
(2) design chemical milling sample plate line and position line
Setting a compensation margin value at the edge of the chemical milling area, and determining the edge line of the chemical milling area containing the compensation margin as a line bit line of a chemical milling sample plate;
(3) supplemented chemical milling sample plate
Designing a supplementing position of a chemical milling groove according to the rigidity requirement of a chemical milling sample plate and the convenience of using workshop marking;
(4) determining non-working edges
And taking the position of the segmented line of the chemical milling sample plate as a non-working edge.
2. The method for preparing a segmented milling template as claimed in claim 1, wherein in the step one), the contour butt-joint line of the technical surface of the part and the parallel line with the arc length of the skin butt-joint line as a fixed value along the contour of the part at the curvature transition of the skin are taken as the segmentation lines.
3. The method as claimed in claim 1, wherein in step one), the edge lines of the milling area are designed to be equidistant inward and constant length as the bit lines of the sample rows.
4. The method as claimed in claim 1, wherein in step one), the edge line of the part is extended outward by a constant thickness and a constant length to design the milling allowance and mark the milling allowance line.
5. The method for preparing a segmented chemical milling template as claimed in claim 1, wherein a small quadrilateral notch is formed at the supplementary position for facilitating the use of the chemical milling workshop.
6. The method as claimed in claim 1, wherein small notches are formed at two ends of the milling groove to facilitate the scribing of the milling workshop.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112307576B (en) * | 2020-09-30 | 2022-04-08 | 成都飞机工业（集团）有限责任公司 | Three-dimensional chemical milling sample plate rapid design method |
| CN112371846B (en) * | 2020-10-22 | 2022-05-10 | 中国航发贵州黎阳航空动力有限公司 | Multifunctional skin stretch-forming die and stretch-forming method |
| CN114523266B (en) * | 2022-02-25 | 2023-11-17 | 沈阳万航机械制造有限公司 | Precise forming method and die for non-uniform-thickness titanium alloy flap |
| CN116061464A (en) * | 2022-12-26 | 2023-05-05 | 江西洪都航空工业集团有限责任公司 | Multi-stringer forming device and forming method |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203333767U (en) * | 2013-06-27 | 2013-12-11 | 江西洪都航空工业集团有限责任公司 | Device for scribing geometric line through chemical milling |
| CN103639655A (en) * | 2013-11-28 | 2014-03-19 | 江西洪都航空工业集团有限责任公司 | Manufacturing process for high-curvature full-profile thin-wall part |
| CN204194883U (en) * | 2014-09-12 | 2015-03-11 | 沈阳飞机工业（集团）有限公司 | A kind of chemical milling template Special drill bushing |
| CN104476118A (en) * | 2014-11-03 | 2015-04-01 | 陕西飞机工业（集团）有限公司 | Manufacturing method of airplane chemical milling skin three-dimensional chemical milling sample plate |
| CN104874841A (en) * | 2015-06-17 | 2015-09-02 | 沈阳飞机工业（集团）有限公司 | Processing method of double-curvature chemical milling forming sample board |
| CN104972282A (en) * | 2015-07-15 | 2015-10-14 | 江西洪都航空工业集团有限责任公司 | Method for machining aircraft skin part |
| CN105091825A (en) * | 2015-09-14 | 2015-11-25 | 江西洪都航空工业集团有限责任公司 | Skin milling area thickness detection method |
| CN106041873A (en) * | 2016-08-22 | 2016-10-26 | 山东太古飞机工程有限公司 | Auxiliary positioning tool for chemical edge milling of aircraft skin |
| CN106739043A (en) * | 2017-03-17 | 2017-05-31 | 零八电子集团四川天源机械有限公司 | PMI foam layers radome of fighter and its manufacture method |
| CN106925631A (en) * | 2015-12-31 | 2017-07-07 | 西安核设备有限公司 | A kind of large-scale double-layer thin wall D types section vacuum chamber fan-shaped section inside and outside shell forming process |
| CN109894498A (en) * | 2017-12-11 | 2019-06-18 | 南通虹波机械有限公司 | Gondola Column Panels forming method |
-
2019
- 2019-06-21 CN CN201910540980.7A patent/CN110321607B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203333767U (en) * | 2013-06-27 | 2013-12-11 | 江西洪都航空工业集团有限责任公司 | Device for scribing geometric line through chemical milling |
| CN103639655A (en) * | 2013-11-28 | 2014-03-19 | 江西洪都航空工业集团有限责任公司 | Manufacturing process for high-curvature full-profile thin-wall part |
| CN204194883U (en) * | 2014-09-12 | 2015-03-11 | 沈阳飞机工业（集团）有限公司 | A kind of chemical milling template Special drill bushing |
| CN104476118A (en) * | 2014-11-03 | 2015-04-01 | 陕西飞机工业（集团）有限公司 | Manufacturing method of airplane chemical milling skin three-dimensional chemical milling sample plate |
| CN104874841A (en) * | 2015-06-17 | 2015-09-02 | 沈阳飞机工业（集团）有限公司 | Processing method of double-curvature chemical milling forming sample board |
| CN104972282A (en) * | 2015-07-15 | 2015-10-14 | 江西洪都航空工业集团有限责任公司 | Method for machining aircraft skin part |
| CN105091825A (en) * | 2015-09-14 | 2015-11-25 | 江西洪都航空工业集团有限责任公司 | Skin milling area thickness detection method |
| CN106925631A (en) * | 2015-12-31 | 2017-07-07 | 西安核设备有限公司 | A kind of large-scale double-layer thin wall D types section vacuum chamber fan-shaped section inside and outside shell forming process |
| CN106041873A (en) * | 2016-08-22 | 2016-10-26 | 山东太古飞机工程有限公司 | Auxiliary positioning tool for chemical edge milling of aircraft skin |
| CN106739043A (en) * | 2017-03-17 | 2017-05-31 | 零八电子集团四川天源机械有限公司 | PMI foam layers radome of fighter and its manufacture method |
| CN109894498A (en) * | 2017-12-11 | 2019-06-18 | 南通虹波机械有限公司 | Gondola Column Panels forming method |
Non-Patent Citations (2)
| Title |
|---|
| 某机型弦杆零件工艺数模及模线样板设计;吴跃珍，等;《教练机》;20120630(第2期);第64-68页 * |
| 立体样板的数字化加工;张淑秋;《第六届中国航空学会青年科技论坛》;20140625;第872-876页 * |
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