CN212398908U - Quick replacement and have mistake proofing function's chemical milling model positioner - Google Patents
Quick replacement and have mistake proofing function's chemical milling model positioner Download PDFInfo
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- CN212398908U CN212398908U CN202020218863.7U CN202020218863U CN212398908U CN 212398908 U CN212398908 U CN 212398908U CN 202020218863 U CN202020218863 U CN 202020218863U CN 212398908 U CN212398908 U CN 212398908U
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Abstract
The utility model relates to an aircraft covering chemical milling manufacturing technical field specifically is a chemical milling model positioner of quick replacement and mistake proofing function, and its characterized in that includes: the glass fiber reinforced plastic composite material drawing mold comprises a glass fiber reinforced plastic base body, a permanent bushing, a quick-change bushing, a bolt, a drawing mold and a skin part, wherein the glass fiber reinforced plastic base body is arranged above the drawing mold, the permanent bushing is arranged at the circle center of the glass fiber reinforced plastic base body, the quick bushing is arranged inside the permanent bushing, the bolt is arranged on the quick bushing and is in contact with the quick bushing, and the skin part is arranged between the drawing mold and the glass fiber reinforced plastic base body.
Description
Technical Field
The utility model relates to an aircraft skin chemical milling manufacturing technical field, concretely relates to quick replacement and chemical milling model positioner who has the mistake proofing function.
Background
Chemical milling: a technique for etching a metal part with a chemical liquid. Chemical milling of a sample plate: the tool is used for accurately ensuring the chemical milling contour of a chemical milling part. The use principle of the chemical milling template is shown in figure 1: the chemical milling sample plate is involuted with the inner surface (internal chemical milling) or the outer surface (external chemical milling) of the chemical milling part, and the positioning pin is inserted for accurate positioning; cutting the protective adhesive film along the chemically milled contour edge of the chemically milled sample plate by using a carving cutter; tearing a protective adhesive film in the area milling area, and taking down the part; putting the part into chemical milling bath solution for etching; after the chemical milling etching is finished, the part is involuted with a chemical milling sample plate, and whether the chemical milling profile is qualified is checked; and after the test is qualified, tearing the protective adhesive film in the non-chemical milling area of the area to finish the chemical milling process.
The chemical milling sample plate is used for both chemical milling and engraving of parts and chemical milling post-inspection of the parts, and is a 'raw inspection common' precision tool which ensures that an airplane metal skin achieves the purpose of weight reduction, meets the requirement on rigidity and strength and ensures the edge distance of a rivet hole, and the tool is required to be brought into a regular inspection according to the relevant technology and quality standard, and the period of the regular inspection is generally 2-3 years. As shown in figure 3, the cost of each piece of material of the ultra-large skin part reaches tens of thousands of yuan, the technical, quality and cost risks are high, the precision and quality requirements of the chemical milling sample plate shown in figure 2 are very high, and the regular inspection period of the chemical milling sample plate is not more than 2 years.
At present, in the mass production and newly-developed models of our company, the number of models adopting metal skins reaches more than twenty, and the annual regular inspection and repair quantity of chemical milling templates reaches 1000-plus-2000 pieces.
A positioning system of a traditional chemical milling template is shown in figure 4, a bushing is made of T10 or CrWMn and the like, the hardness of the bushing after quenching reaches HRC60-64, the diameter of a positioning hole is phi 5.2F 7, the outer diameter is M10, and left and right threads are used for preventing the bushing from rotating and falling off with a glass steel matrix in the using process.
The traditional chemical milling template positioning system has the following problems: the chemical milling template is often found in the regular inspection: the bushing (figure 4) is seriously worn (the diameter is enlarged, the bushing is oval and the like) in use (drilling, reaming and positioning), the coordination and the interchangeability of the precision positioning between the aluminum alloy skin part and a plurality of sets of tools such as a drawing die, a cutting template, a chemical milling template and the like cannot be met, the chemical milling precision, the appearance precision, the rivet hole edge distance and the like of the skin part are influenced, and the bushing needs to be manufactured and replaced again; in order to ensure the firm fixation of the bushing and the glass fiber reinforced plastic substrate, the excircle of the bushing is of a left-handed and right-handed threaded structure, when the scrapped bushing is taken out, a glass fiber reinforced plastic positioning hole can be damaged, therefore, the molded surface needs to be repositioned according to the manufacturing basis of a drawing die, a transition die, a drop hammer die and the like, the edge is chemically milled, then, a new bushing is poured by epoxy resin, the repair workload is very large, the cycle is basically more than one week, and the repair period is equivalent to about 80% of the new cycle of a chemical milling template; the original design bolt only has one specification (d =5 mm), the bushing only has one specification (an inner hole phi =5.2mm, an outer shape M10mm, a thread with a right-handed rotation and a left-handed rotation), and the bolt has no error-proofing function (when the skin parts are turned around at 0 degrees and 180 degrees in a rotating manner, if the skin parts are similar in shape, the skin parts can still be positioned, but the deviation which is not easily recognized by an operator exists), the skin parts are often out of tolerance and even scrapped, the scrapping of large aluminum alloy skins often causes the loss of tens of thousands of elements, and the phenomenon can occur in the development and batch production of various machine types every year, and the loss is large.
In summary, in order to solve the problems of newly-developed and mass-produced models in the production field, large workload and long period of the chemical milling sample plate, and high technical, quality and cost risks, a fast-replacement and error-prevention chemical milling sample plate positioning device is urgently needed to be researched.
For example, patent application No. 201410610734.1, application date 11/3/2014, entitled "method for manufacturing stereo milling template for aircraft milling skin", includes the following specific contents: the utility model belongs to the technical field of chemical milling, a relate to the improvement to large-scale aircraft chemical milling covering chemical milling model manufacturing approach. The method is characterized in that: the steps for manufacturing the three-dimensional milling template are as follows: establishing a standard template process digital-analog data set; manufacturing a standard template; establishing a chemical milling template process digital-analog data set; and manufacturing a three-dimensional milling template. The article 1.1 of the claim, "… … airplane chemical milling skin quadrilateral outline edge with positioning hole milling positioning lug … … milling positioning lug is arranged on one side edge of the airplane chemical milling skin along the long edge, the number of the milling positioning lugs is 2-6, and … …" is distributed along the edge.
The above patent only describes that the chemical milling skin part and the chemical milling sample plate are both provided with the chemical milling positioning lug with the positioning hole, and the description can show that the chemical milling sample plate lug of the scheme only has the positioning hole and does not have other positioning devices such as a bushing, a drill bushing and the like; the above patent does not describe the repair scheme after the positioning hole of the chemical milling sample plate is worn, and does not consider the error-proof function in the use of the chemical milling sample plate. The utility model discloses a have high rigidity, high wear-resisting special bush structure on the chemical milling model ear piece, this bush structure can improve the positioning accuracy of chemical milling model, prolong the chemical milling model's life, can also realize the chemical milling model and reprocess quick dress, tear open to have the mistake proofing function of use.
For example, the invention patent with the application number of 201110341326.7, the application date of 2011, 11, month and 2, and the name of "chemical milling template processing method" has the following specific contents: the utility model relates to a chemical milling template processing method, including following step: 1) manufacturing a data set; 2) unfolding the data set; 3) unfolding a data set to manufacture chemical milling molding blanks; 4) unfolding the transition sample plate, and moving to form a molding wool; 5) visual holes are formed in the woollen; 6) and (5) forming a chemical milling sample plate. Claim 5) item: a sample plate manufacturing unit worker utilizes a positioning hole or a pin hole to attach the expansion transition sample plate to the chemical milling forming blank, and the worker directly opens a view port with chemical milling allowance on the chemical milling forming blank according to a view hole of the expansion transition sample plate. "
The above patent only describes that the chemical milling sample plate has "positioning holes or pin holes", does not explain the special structure of the positioning holes or pin holes of the chemical milling sample plate, the repair scheme after abrasion, and the like, and does not consider the error-proofing function in the use of the chemical milling sample plate. The utility model discloses a change and mill the model and have high rigidity, high abrasion's special bush structure, this bush structure can improve the positioning accuracy that the model was milled in the change, prolong the life that the model was milled in the change, can also realize changing the quick-mounting in the model was reprocessed, tear open to have the function that prevents the use error.
For example, the patent application No. 201420526733.4, application date 9/12/2014, entitled "a special drill bushing for chemical milling template", includes the following specific contents: the utility model discloses a special drill bushing for a chemical milling sample plate, which is provided with a drill bushing upper main body and a drill bushing lower main body, wherein the drill bushing upper main body and the drill bushing lower main body are respectively provided with coaxial guide holes I and II, the drill bushing upper main body comprises a base I and a boss, and the boss is provided with an annular spherical groove; the lower main body of the drill bushing comprises a base II and an annular spherical convex rib matched with the annular spherical groove; the drill bushing upper main body is also provided with a wrapping sleeve I matched with the shape of the base I, and the drill bushing lower main body is provided with a wrapping sleeve II matched with the shape of the base II.
Above-mentioned patent and this patent are the positioner of chemical milling model together, but its structural style, relevant part quantity, technical principle etc. with the utility model discloses show the difference: the drill sleeve of the patent has an upper main body and a lower main body, the utility model has no upper main body and no lower main body, and the utility model is a permanent bushing and a quick-change bushing; the number of parts in the patent is 4, the shape is complex, the manufacturing cost is high, the utility model is 2, the shape is simple, and the manufacturing cost is lower; the upper and lower main bodies of the patent adopt 'buckling' elastic force to realize connection, the utility model adopts threaded connection and has higher reliability; the assembly and disassembly work of the structure is difficult, and the utility model adopts the screw thread and the 2-side flat plane to realize quick assembly and disassembly; above-mentioned patent does not relate to positioner's quick dress, tear open and use the mistake proofing function, the utility model discloses a install and remove fast and have use mistake proofing function.
For example, in the literature, "design and manufacturing methods of large-scale three-dimensional milling templates" (key laboratory of modern design and integrated manufacturing technology education department of northwest university, author kunzhi, etc., "aeronautical manufacturing technology", 2013, stage 17), the contents of "processing of positioning holes and fabrication holes" in section 4 are: and (3) placing the sample plate on a special fixture, placing the sample plate on a workbench of a numerical control machine tool, determining a workpiece coordinate system, moving the main shaft to a target position by taking a positioning hole at one end as an original point according to the distance between two positioning holes on a process numerical model, performing point machining to mark a target positioning hole, and then machining an ideal positioning hole. In order to ensure the consistency of the sample plate process hole and the process hole on the skin part, the process hole on the sample plate and related molded lines such as a chemical milling contour line are processed on a numerical control machine tool by using a special clamp, and the relative position of the sample plate and the special clamp is positioned and fixed by using a pin; and the fabrication hole of the skin part is directly processed on the drawing die tire.
The content display comprises the following steps: the related content of the research is how to process an ideal positioning hole of the chemical milling sample plate, the structure of the positioning hole of the chemical milling sample plate, the repair after abrasion and the like are not involved, and the use error-proof function of the positioning hole of the chemical milling sample plate is also not involved.
SUMMERY OF THE UTILITY MODEL
To the not enough among the above-mentioned prior art, the utility model provides a quick replacement and have the chemical milling model positioner of mistake proofing function.
The utility model provides a change and mill model positioner that quick replacement and have mistake proofing function which characterized in that includes: the glass fiber reinforced plastic composite material drawing mold comprises a glass fiber reinforced plastic base body, a permanent bushing, a quick-change bushing, a bolt, a drawing mold and a skin part, wherein the glass fiber reinforced plastic base body is arranged above the drawing mold, the permanent bushing is arranged at the circle center of the glass fiber reinforced plastic base body, the quick bushing is arranged inside the permanent bushing, the bolt is arranged on the quick bushing and is in contact with the quick bushing, and the skin part is arranged between the drawing mold and the glass fiber reinforced plastic base body.
The glass fiber reinforced plastic matrix is made of alkali-free glass cloth and E44 epoxy resin, and the thickness of the glass fiber reinforced plastic matrix is 4-6 mm.
The permanent bushing is made of 45 steel, and the heat treatment hardness of the permanent bushing is HRC 30-35.
The quick-change bushing is made of CrWMn steel, and the heat treatment hardness of the quick-change bushing is HRC 60-64.
The positioning device of the skin processing matched tool such as the skin part, the chemical milling sample plate, the drawing die, the cutting sample plate and the like needs to be simultaneously used for 2 sets, and the diameter size difference of the positioning holes and the pins of the 2 sets of positioning devices is 1 mm.
The equal hardness is easy to finish after quenching; the surface is plated with chrome for rust prevention, so that the service life can be prolonged and the attractiveness can be improved; the design has special structure in order to satisfy the operation requirement: the annular groove is used for being firmly connected with the glass fiber reinforced plastic base body to prevent the lining from falling off in use; the B-size flat surface is used for being firmly connected with the glass fiber reinforced plastic base body, so that the bushing is prevented from rotating in use; the M-size threaded hole is used for mounting a quick-change bushing; the M-size threaded hole adopts fine teeth and right-handed threads, and the tolerance grade is not lower than the precision grade of 6H, so that the positioning precision of the quick-change bushing is ensured, and the phenomenon that the machining precision of the positioning hole of the skin part is influenced by loosening and withdrawing of the quick-change bushing due to cutting friction force and contact friction force during the positioning operation of drilling, reaming and inserting pins is avoided.
The high hardness is used for meeting the wear resistance of drilling, reaming and positioning; the B-size flat surface is used for quick assembling and disassembling clamping; the M-size external thread is used for being quickly connected with the permanent bushing; the M-size threaded hole adopts fine threads and right-handed threads, and the tolerance grade is not lower than the precision grade of 6h, so that the positioning precision of the M-size threaded hole is ensured, and the phenomenon that the machining precision of the positioning hole of the skin part is not influenced by the loosening, withdrawing and the like of the quick-change bushing due to cutting friction force and contact friction force during the operations of drilling, reaming and bolt positioning is met; the tolerance of the size phi of the positioning hole is H7, and the positioning hole is manufactured by increasing the diameter d of the plug pin (4) by 0.2mm, namely: phi = d +0.2, and the theoretical clearance of the fit between the positioning hole and the plug pin is +0.1mm, so that the plug pin can be inserted when an allowable accumulated error exists.
The positioning devices of skin processing matched tools such as the skin part, the chemical milling sample plate, the drawing die, the cutting sample plate and the like need to be not less than 2 sets at the same time, and the diameter size difference of the positioning holes and the diameter size of the plug pins of the 2 sets of positioning devices needs to be about 1mm, so that the unique correctness of the positioning direction between the skin part and the multiple sets of tools such as the chemical milling sample plate, the drawing die, the cutting sample plate and the like is ensured, and the error that the skin part can still be installed after being turned around in the whole manufacturing process and each processing procedure is prevented.
The utility model has the advantages that:
1. the utility model discloses can realize the chemical milling model bush hole and use the quick repair after wearing and tearing.
2. The utility model discloses have and use the mistake proofing function, can effectively reduce quality cost.
3. The utility model discloses wearability is high, long service life.
4. The utility model has simple structure, easy manufacture and low cost.
5. The utility model discloses still can supply the positioning system design of the glass steel material class frock in aluminum alloy covering, combined material covering appearance cutting, appearance inspection, covering system hole, light-duty non-metallic material frock, make the reference.
6. The utility model discloses a change and mill the model and have high rigidity, high abrasion's special bush structure, this bush structure can improve the positioning accuracy that the model was milled in the change, prolong the life that the model was milled in the change, can also realize changing the quick-mounting in the model was reprocessed, tear open to have the function that prevents the use error.
7. The utility model discloses using, examining regularly and finding the quick change bush wearing and tearing when needing to be changed, only need screw out quick change bush, the reserve quick change bush of screw in can, the reloading time only needs several minutes, has improved change efficiency greatly.
The working principle is as follows:
manufacturing a permanent bushing, a quick-change bushing and a bolt according to the technical requirements of the scheme of the utility model, connecting the permanent bushing and the quick-change bushing when manufacturing a new chemical milling sample plate, installing and fixing the permanent bushing and the quick-change bushing on a drawing die, a transition die, a drop hammer die and other tools through the bolt, and bonding and temporarily fixing the permanent bushing and the quick-change bushing by glue; manually applying glass cloth soaked with epoxy resin, embedding the permanent bushing into the glass fiber reinforced plastic matrix, and exposing the quick-change bushing flange plate; after the epoxy resin is cured, cleaning up the redundant epoxy resin on the surface of the quick-change bushing; processing the molded surface of the chemical milling sample plate, the working edge, the non-working edge, the mark and the like to finish the manufacturing and the delivery of the chemical milling sample plate; when the chemical milling sample plate is used and is subjected to regular inspection, the quick-change bushing is worn and needs to be replaced, and only the quick-change bushing needs to be screwed out and the standby quick-change bushing needs to be screwed in. When the situation that the positioning pin cannot be inserted after the skin part is attached to the chemical milling sample plate is found, the coordination direction of the skin part and the chemical milling sample plate is wrong, and the skin part is required to be re-coordinated and installed after being turned for 180 degrees.
Reference numerals
1. The glass fiber reinforced plastic composite material comprises a glass fiber reinforced plastic base body, 2 parts of a permanent bushing, 3 parts of a quick-change bushing, 4 parts of a bolt, 5 parts of a drawing die and the like, and 6 parts of a skin.
Drawings
FIG. 1 is a schematic diagram of the use of a chemical milling template;
FIG. 2 is a schematic diagram of a very large milling template;
FIG. 3 is a schematic view of an ultra-large chemically milled skin part;
FIG. 4 is a schematic diagram of a positioning system for a conventional milling template;
FIG. 5 is a schematic view of the main view of the present invention;
FIG. 6 is a schematic view of a permanent liner;
FIG. 7 is a schematic view of a quick-change bushing;
FIG. 8 is a schematic view of a latch.
The specific implementation mode is as follows:
example 1:
the utility model provides a change and mill model positioner that quick replacement and have mistake proofing function which characterized in that includes: the glass fiber reinforced plastic composite material drawing mold comprises a glass fiber reinforced plastic base body 1, a permanent bushing 2, a quick-change bushing 3, a bolt 4, a drawing mold and a skin part 6, wherein the glass fiber reinforced plastic base body 1 is arranged above the drawing mold, the permanent bushing 2 is arranged at the position of the circle center of the glass fiber reinforced plastic base body 1, the quick bushing is arranged inside the permanent bushing 2, the bolt 4 is arranged on the quick bushing and is in contact with the quick bushing, and the skin part 6 is arranged between the drawing mold and the glass fiber reinforced plastic base body 1.
The quick-change bushing 3 is made of CrWMn steel, and the heat treatment hardness of the quick-change bushing is HRC 60-64.
The positioning devices of the skin processing matched tools such as the skin part 6, the chemical milling sample plate, the drawing die, the cutting sample plate and the like need to be simultaneously used for 2 sets, and the diameter size difference between the positioning holes of the 2 sets of positioning devices and the diameter size of the plug pin 4 is 1 mm.
Example 3:
the utility model provides a change and mill model positioner that quick replacement and have mistake proofing function which characterized in that includes: the glass fiber reinforced plastic composite material drawing mold comprises a glass fiber reinforced plastic base body 1, a permanent bushing 2, a quick-change bushing 3, a bolt 4, a drawing mold and a skin part 6, wherein the glass fiber reinforced plastic base body 1 is arranged above the drawing mold, the permanent bushing 2 is arranged at the position of the circle center of the glass fiber reinforced plastic base body 1, the quick bushing is arranged inside the permanent bushing 2, the bolt 4 is arranged on the quick bushing and is in contact with the quick bushing, and the skin part 6 is arranged between the drawing mold and the glass fiber reinforced plastic base body 1.
The glass fiber reinforced plastic substrate 1 is made of alkali-free glass cloth and E44 epoxy resin, and the thickness is 4-6 mm.
The permanent lining 2 is made of 45 steel and has heat treatment hardness HRC 30-35.
The positioning devices of the skin processing matched tools such as the skin part 6, the chemical milling sample plate, the drawing die, the cutting sample plate and the like need to be simultaneously used for 2 sets, and the diameter size difference between the positioning holes of the 2 sets of positioning devices and the diameter size of the plug pin 4 is 1 mm.
Example 4:
the utility model provides a change and mill model positioner that quick replacement and have mistake proofing function which characterized in that includes: the glass fiber reinforced plastic composite material drawing mold comprises a glass fiber reinforced plastic base body 1, a permanent bushing 2, a quick-change bushing 3, a bolt 4, a drawing mold and a skin part 6, wherein the glass fiber reinforced plastic base body 1 is arranged above the drawing mold, the permanent bushing 2 is arranged at the position of the circle center of the glass fiber reinforced plastic base body 1, the quick bushing is arranged inside the permanent bushing 2, the bolt 4 is arranged on the quick bushing and is in contact with the quick bushing, and the skin part 6 is arranged between the drawing mold and the glass fiber reinforced plastic base body 1.
The glass fiber reinforced plastic substrate 1 is made of alkali-free glass cloth and E44 epoxy resin, and the thickness is 4-6 mm.
The permanent lining 2 is made of 45 steel and has heat treatment hardness HRC 30-35.
The quick-change bushing 3 is made of CrWMn steel, and the heat treatment hardness of the quick-change bushing is HRC 60-64.
Example 5:
the utility model provides a change and mill model positioner that quick replacement and have mistake proofing function which characterized in that includes: the glass fiber reinforced plastic composite material drawing mold comprises a glass fiber reinforced plastic base body 1, a permanent bushing 2, a quick-change bushing 3, a bolt 4, a drawing mold and a skin part 6, wherein the glass fiber reinforced plastic base body 1 is arranged above the drawing mold, the permanent bushing 2 is arranged at the position of the circle center of the glass fiber reinforced plastic base body 1, the quick bushing is arranged inside the permanent bushing 2, the bolt 4 is arranged on the quick bushing and is in contact with the quick bushing, and the skin part 6 is arranged between the drawing mold and the glass fiber reinforced plastic base body 1.
The glass fiber reinforced plastic substrate 1 is made of alkali-free glass cloth and E44 epoxy resin, and the thickness is 4-6 mm.
The permanent lining 2 is made of 45 steel and has heat treatment hardness HRC 30-35.
The quick-change bushing 3 is made of CrWMn steel, and the heat treatment hardness of the quick-change bushing is HRC 60-64.
The positioning devices of the skin processing matched tools such as the skin part 6, the chemical milling sample plate, the drawing die, the cutting sample plate and the like need to be simultaneously used for 2 sets, and the diameter size difference between the positioning holes of the 2 sets of positioning devices and the diameter size of the plug pin 4 is 1 mm.
The working principle is as follows:
manufacturing a permanent bushing, a quick-change bushing and a bolt according to the technical requirements of the scheme of the utility model, connecting the permanent bushing and the quick-change bushing when manufacturing a new chemical milling sample plate, installing and fixing the permanent bushing and the quick-change bushing on a drawing die, a transition die, a drop hammer die and other tools through the bolt, and bonding and temporarily fixing the permanent bushing and the quick-change bushing by glue; manually applying glass cloth soaked with epoxy resin, embedding the permanent bushing into the glass fiber reinforced plastic matrix, and exposing the quick-change bushing flange plate; after the epoxy resin is cured, cleaning up the redundant epoxy resin on the surface of the quick-change bushing; processing the molded surface of the chemical milling sample plate, the working edge, the non-working edge, the mark and the like to finish the manufacturing and the delivery of the chemical milling sample plate; when the chemical milling sample plate is used and is subjected to regular inspection, the quick-change bushing is worn and needs to be replaced, and only the quick-change bushing needs to be screwed out and the standby quick-change bushing needs to be screwed in. When the situation that the positioning pin cannot be inserted after the skin part is attached to the chemical milling sample plate is found, the coordination direction of the skin part and the chemical milling sample plate is wrong, and the skin part is required to be re-coordinated and installed after being turned for 180 degrees.
Claims (4)
1. The utility model provides a change and mill model positioner that quick replacement and have mistake proofing function which characterized in that includes: the glass steel matrix (1), permanent bush (2), quick change bush (3), bolt (4), drawing die and covering part (6), glass steel matrix (1) sets up the top at drawing die, permanent bush (2) set up with glass steel matrix (1) centre of a circle department, permanent bush (2) inside is provided with quick bush, bolt (4) set up on quick bush to contact with quick bush, covering part (6) set up between drawing die and glass steel matrix (1).
2. The fast-replaceable error-proof chemical milling template positioning device as claimed in claim 1, wherein: the permanent lining (2) is made of 45 steel, and the heat treatment hardness of the permanent lining is HRC 30-35.
3. The fast-replaceable error-proof chemical milling template positioning device as claimed in claim 1, wherein: the quick-change bushing (3) is made of CrWMn steel, and the heat treatment hardness of the quick-change bushing is HRC 60-64.
4. The fast-replaceable error-proof chemical milling template positioning device as claimed in claim 1, wherein: the positioning device of the skin processing matched tool of the skin part (6), the chemical milling sample plate, the drawing die and the cutting sample plate needs to be simultaneously used for 2 sets, and the diameter size difference of the positioning holes of the 2 sets of positioning devices and the diameter size difference of the plug pin (4) are 1 mm.
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| CN202020218863.7U CN212398908U (en) | 2020-02-27 | 2020-02-27 | Quick replacement and have mistake proofing function's chemical milling model positioner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113059322A (en) * | 2021-03-26 | 2021-07-02 | 陕西飞机工业有限责任公司 | Variable-thickness frame edge processing method |
| CN115122049A (en) * | 2022-06-22 | 2022-09-30 | 四川航天长征装备制造有限公司 | Melon petal chemical milling sample plate processing and positioning method thereof |
-
2020
- 2020-02-27 CN CN202020218863.7U patent/CN212398908U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113059322A (en) * | 2021-03-26 | 2021-07-02 | 陕西飞机工业有限责任公司 | Variable-thickness frame edge processing method |
| CN115122049A (en) * | 2022-06-22 | 2022-09-30 | 四川航天长征装备制造有限公司 | Melon petal chemical milling sample plate processing and positioning method thereof |
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