CN212421914U - Manufacturing die for unmanned aerial vehicle blade - Google Patents
Manufacturing die for unmanned aerial vehicle blade Download PDFInfo
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- CN212421914U CN212421914U CN201922126691.0U CN201922126691U CN212421914U CN 212421914 U CN212421914 U CN 212421914U CN 201922126691 U CN201922126691 U CN 201922126691U CN 212421914 U CN212421914 U CN 212421914U
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Abstract
The utility model discloses a manufacturing mould of an unmanned aerial vehicle blade, which comprises an upper mould, a lower mould and a positioning pin I; the lower die cuts a cut block rightwards from a left reverse angle zero-degree line position on the front wall of the lower die cavity corresponding to the rear edge of the blade; the right end face of the cutting block corresponds to the starting position of arc transition of the tail end of the blade tip of the blade body, the lower end face of the cutting block is lower than the lowest point of the intersection line of the front wall of the lower die cavity and the bottom face of the lower die cavity, the rear end face is the inner end face of the front wall of the lower die cavity, and the front end face is not larger than the outer end face of the front wall of the lower die; the left end and the right end of the upper end surface of the lower die block are respectively provided with a symmetrical positioning pin I, the lower end surface of the upper die is provided with a positioning hole I, and after die assembly is carried out, the positioning pins I are positioned in the positioning holes I; the front and back walls of the upper and lower mould blocks are uniformly provided with fixing mechanisms, and after mould assembly, the upper and lower mould blocks are fixed together by the fixing mechanisms. The utility model has the advantages of easy manufacture, low manufacturing cost, high manufacturing accuracy and low rejection rate; the unmanned aerial vehicle blade of its preparation easily demolds, low in manufacturing cost, the blade quality is high.
Description
Technical Field
The utility model belongs to the technical field of the unmanned aerial vehicle blade preparation, a preparation mould of unmanned aerial vehicle blade is related to.
Background
Unmanned aerial vehicles are a new industry and are widely used in military and civil fields. The blades of the unmanned aerial vehicle are main moving parts for meeting the power of the unmanned aerial vehicle. With the development of the aviation industry in China, the unmanned aerial vehicle becomes one of the novel development industries of the aviation industry.
The blade is generally manufactured by a die, and the blade die is generally divided into an upper die and a lower die according to the placing position on a curved surface formed by the connecting line of the maximum contour lines of the front edge and the rear edge of the blade body. The unmanned aerial vehicle has the advantages that the unmanned aerial vehicle is high in performance requirement, high in rotating speed, the blade is of a sheet structure, the length of the blade is small and is generally about 1-3 meters, the blade body twisting angle of the blade is large, the thickness of the trailing edge of the blade is small, the boundary of the trailing edge is a straight edge, and therefore the lower die for manufacturing the blade is required to have a reverse angle phenomenon on the end face of the die cavity corresponding to the trailing edge of the blade, namely the side end face of the die cavity corresponding to the trailing edge of the blade inclines outwards towards the die cavity at one end close to the blade shank, the included angle between the lower die and the horizontal plane of the die cavity is larger than 90 degrees, the other end far away from the blade shank inclines inwards towards the die cavity, the included angle between the. Because the die cavity of the lower die is difficult to manufacture due to the fact that the reverse angle phenomenon exists, the milling cutters are vertically downward and have included angles smaller than 90 degrees with the horizontal plane of the die cavity, the milling cutters cannot be milled by common milling cutters and need to be obliquely arranged, so that the milling cutters need to be specially customized for the process, huge cost is added to the manufacture of blades, the milling operation is very complicated and laborious, the accuracy is poor, and the rejection rate is extremely high; moreover, even if the lower die is manufactured, the manufactured blade cannot be stripped and taken out due to the fact that the side end face of the die cavity is inclined; and because the blade body of the blade has a larger twisting angle, the reverse manufacturing error of the die cavity of the die is large, and the precision is low. In a word, adopt present to cut apart into the concept of upper and lower mould with whole mould to make unmanned aerial vehicle blade basically can't realize.
Unmanned aerial vehicle blade body distortion angle is great in addition, and blade petiole terminal surface is equipped with eccentric locating pin structure for adjust the blade angle. The positioning pin and the positioning sleeve are integrally and mechanically molded, and the molding process is complex. The blade body of the blade is integrated with the blade handle into a whole when being molded by the blade body mold; during the mould shaping, the blade location adopts machining, and angular positioning deviation is great, and blade mould shaping relief angle error is big, will take the position sleeve of locating pin to fix to the petiole terminal surface again on, more be difficult to guarantee the installation angle uniformity of blade body and locating pin, and then lead to the blade locating pin poor with the uniformity of the angle of blade body, hardly guarantee high-speed rotating vane's equilibrium and security.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems in the prior art and provide a manufacturing mold for unmanned aerial vehicle blades, which is easy to manufacture, low in manufacturing cost, high in manufacturing accuracy and low in rejection rate; the unmanned aerial vehicle blade of its preparation easily demolds, low in manufacturing cost, and the preparation accuracy is high, and the blade quality is high, and the rejection rate is low.
In order to achieve the above object, the technical solution of the present invention is: a manufacturing die for an unmanned aerial vehicle blade comprises an upper die, a lower die and a positioning pin I; the die cavity is completely matched with the blade body of the blade, and is divided into an upper die cavity and a lower die cavity on a curved surface formed by the connecting line of the maximum contour lines of the front edge and the rear edge of the blade body; the end walls of the upper die and the lower die at one end of the petiole, namely the left walls of the upper die cavity and the lower die cavity, are provided with semicircular holding grooves of the petiole; the lower die is used for cutting blocks rightwards from a left reverse angle zero-degree line position on the end wall of a lower die cavity corresponding to the trailing edge of the blade, namely the front wall of the lower die cavity, and the lower die consists of a lower die block and blocks detachably fixed on the upper end surface of the lower die block; the right end surface of the cutting block corresponds to the starting position of the arc transition of the tail end of the blade tip of the blade body, the lower end surface of the cutting block is lower than the lowest point of the intersection line of the front wall of the lower die cavity and the bottom surface of the lower die cavity and is higher than the bottom surface of the lower die block, the rear end surface of the cutting block is the inner end surface of the front wall of the lower die cavity, and the front end surface of the cutting block is not larger than; the left end and the right end of the upper end surface of the lower die block are respectively provided with a symmetrical positioning pin I, the corresponding position of the lower end surface of the upper die is provided with a positioning hole I, and after die assembly is carried out, the positioning pins I are positioned in the positioning holes I; the front wall and the rear wall of the upper die block and the lower die block are respectively and uniformly provided with a fixing mechanism, and after die assembly, the upper die block and the lower die block are fixed together by the fixing mechanism.
Further preferably, the cutting block is detachably fixed on the upper end surface of the lower mold block in a structure that: the upper end surface of the lower die block is uniformly provided with a plurality of bolt holes I and two positioning holes III which are symmetrical left and right at the position where the cutting block is located; a plurality of bolt counter bores and positioning pins III matched with the two positioning holes III are uniformly arranged at corresponding positions on the cutting block; the cutting block and the lower die sub-block are positioned by a positioning pin III and fixed together by a bolt III. The positioning and installation are convenient, and the fixing structure is simple.
Further preferably, the fixing mechanism comprises an angle plate lifting module fixed on the front or rear wall of the upper die by a screw and an angle plate pressurizing block fixed on the front or rear wall of the lower die block by a screw; the upper wall of the lifting module is provided with a threaded hole matched with the long bolt, and the upper wall of the pressurizing block is provided with a unthreaded hole which is communicated with the threaded hole in the upper wall of the lifting module and is matched with the long bolt; the lifting module and the pressurizing block are fixed together through a long bolt and a nut I which are connected in the threaded hole and the unthreaded hole. This structure does not influence the setting of other structures of mould and lower mould piecemeal, and simple structure, and when bolt I and nut I will play the module and pressurize the piece and fix together, go up mould and lower mould and fix together, and the nut is deviate from to the bolt, goes up mould and lower mould and no longer fixes, screws up the bolt height, screws up the bolt downwards again, because bolt and play module threaded connection, can break away from the lower mould drawing of patterns with last mould.
Further preferably, a positioning sleeve I is arranged in the positioning hole I of the upper die. The locating sleeve I is a wear-resistant part, so that the mutual abrasion of the locating pin I and the locating hole I is avoided when the upper die and the lower die are assembled, the service life is prolonged, and the locating sleeve I is easy to replace after abrasion.
Preferably, the left walls of the upper die cavity and the lower die cavity of the upper die block and the lower die block extend to the left end to form the left walls of the upper die cavity and the lower die cavity, a mounting groove of the blade positioning sleeve is reserved between the right end surface of the left wall of the lower die cavity and the left end surface of the left wall of the lower die cavity, and the left wall of the lower die is provided with a U-shaped positioning groove of which the lower end is completely matched with the blade positioning pin; and a positioning sleeve accommodating through groove is formed in the position, matched with the blade positioning sleeve, of the left wall of the upper die. When the blade body is manufactured, the blade positioning sleeve with the positioning pin is installed on the blade handle, then the blade body is manufactured by placing the blade positioning sleeve and the blade handle together in the lower die cavity, and finally the upper die is subjected to die assembly and then hot pressing molding. Due to the positioning effect of the positioning pin, a machining structure for positioning the blade during mold forming is cancelled, the positioning pin is directly used for positioning, the twisting angle of the blade body can be accurately grasped, the accuracy of the mounting positions of the blade body and the positioning pin and the consistency of the deflection angle are ensured, the balance and the safety of the high-speed rotating blade are ensured, and the blade quality is improved.
The utility model discloses the mould is cut apart into lower mould piecemeal and stripping off with the lower mould, and lower mould piecemeal and stripping off carry out machine tool machining respectively, as long as with the die cavity of stripping off in opposite directions, just can mill the type with ordinary milling cutter with last mould, lower mould piecemeal is the same, need not customize special cutter, and mould processing easy operation, the accuracy is high, and the rejection rate is low, has saved the working costs of mould. The cutting block that mills the type completion just formed complete lower mould on being fixed to the lower mould piecemeal, because convenient operation, the preparation precision is high, do not influence the accuracy of the whole die cavity of mould completely, the accuracy of blade preparation has been guaranteed, and the blade makes the back, will go up the mould and take off the back, as long as take off the cutting block from the lower mould piecemeal, just can deviate from the blade from the lower mould, so even if there is the dihedral in mould die cavity, also do not influence the production of blade, the blade quality is high, the rejection rate is low, and low in manufacturing cost. Particularly, the fixing mechanism adopts the mold lifting block on the upper mold and the pressing block on the lower mold block, which is more convenient for the mold lifting of the upper mold. And a die provided with a blade positioning sleeve and a blade positioning pin mounting structure is used, so that the deflection angle precision of the manufactured blade is higher, and the installation performance and the service life of the flying blade are ensured.
Drawings
FIG. 1 is a front view of the mold of the present invention;
fig. 2 is a left side view of the mold of the present invention;
fig. 3 is a right side view of the mold of the present invention;
FIG. 4 is a top view of the lower mold with the blade installed according to the present invention;
FIG. 5 is a front view of the middle upper mold of the present invention;
fig. 6 is a top view of the middle upper mold of the present invention;
fig. 7 is a left side view of the middle upper die of the present invention;
fig. 8 is a right side view of the middle upper die of the present invention;
FIG. 9 is a cross-sectional view AA in FIG. 6;
FIG. 10 is a front view of the middle and lower mold blocks of the present invention;
fig. 11 is a top view of the middle and lower mold blocks of the present invention;
FIG. 12 is a left side view of the middle and lower mold blocks of the present invention;
FIG. 13 is a right side view of the middle and lower mold blocks of the present invention;
FIG. 14 is a view of the BB section of FIG. 11;
fig. 15 is a front view of the cutout in the present invention;
fig. 16 is a top view of the cutout of the present invention;
fig. 17 is a left side view of the cutout of the present invention;
fig. 18 is a right side view of the middle cutout of the present invention;
fig. 19 is a cross-sectional view CC of fig. 15.
Detailed Description
The invention is further described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 19, the present embodiment includes an upper die 1, a lower die, and a positioning pin i 6. The mould with the mould cavity completely matched with the blade body 16 is divided into an upper mould 1 and a lower mould on a curved surface formed by a connecting line of the maximum contour lines 24 of the front edge and the rear edge of the blade body 16, and the mould cavity is divided into an upper mould cavity 28 and a lower mould cavity 30. The upper and lower dies 1 and 1 have semi-circular receiving slots 35 and 33 for the tangs 15 in the end walls of the tangs 15, i.e., the upper and lower die cavity left walls 29 and 31. The lower die cuts a cutting block 9 rightwards from the position of a left reverse angle zero-degree line 27 on the end wall of a lower die cavity corresponding to the rear edge of the blade, namely the front wall 36 of the lower die cavity, and the lower die consists of a lower die block 5 and the cutting block 9 which is detachably fixed on the upper end surface of the lower die block 5; the preferable structure is as follows: the upper end surface of the lower die block 5 is uniformly provided with 4 bolt holes I18 and two positioning holes III 19 which are symmetrical left and right at the position of the cutting block 9; 4 bolt counter bores 38 and positioning pins III 10 matched with the two positioning holes III 19 are uniformly arranged at corresponding positions on the cutting block 9; the cutting block 9 and the lower die block 5 are positioned by a positioning pin III 10 and fixed together by a bolt III 8. And 34 is a cutting block accommodating groove of the cutting block 9 formed on the lower die block 5. The right end surface 39 of the cutting block 9 corresponds to the starting position 26 of the arc transition of the tail end of the blade tip 25 of the blade body 16, the lower end surface 32 of the cutting block is lower than the lowest point of the boundary line of the lower die cavity front wall 36 and the lower die cavity bottom surface and is higher than the bottom surface of the lower die block 5, the rear end surface of the cutting block is the inner end surface of the lower die cavity front wall 36, and the front end surface 40 of the cutting block is not larger than the outer end surface of the lower. 41 is the negative angle profile of the cut-out 9. The left end and the right end of the upper end face of the lower die block 5 are respectively provided with a symmetrical positioning pin I6, the corresponding position of the lower end face of the upper die 1 is provided with a positioning hole I, and after die assembly, the positioning pin I6 is located in the positioning hole I. Preferably, a positioning sleeve I7 is installed in the positioning hole I of the upper die 1. The front wall and the rear wall of the upper die 1 and the lower die block 5 are respectively and uniformly provided with a fixing mechanism, and after die assembly, the upper die and the lower die block are fixed together by the fixing mechanism. Preferably, the fixing mechanism comprises an angle plate lifting block 2 fixed on the front or rear wall of the upper die 1 by a screw 22 and an angle plate pressurizing block 11 fixed on the front or rear wall of the lower die block 5 by a screw 22; the upper wall of the stripping module 2 is provided with a threaded hole matched with the long bolt 3, and the upper wall of the pressurizing block 11 is provided with a unthreaded hole which is communicated with the threaded hole on the upper wall of the stripping module 2 and is matched with the long bolt 3; the lifting module 2 and the pressurizing block 11 are fixed together through a long bolt 3 and a nut I20 which are connected in the threaded hole and the unthreaded hole.
Preferably, the left walls 29 and 31 of the upper and lower mold cavities of the upper and lower mold blocks 1 and 5 extend to the left ends to form the left walls 29 and 17 of the upper and lower molds (the left wall 29 of the upper mold cavity is the same as the left wall 29 of the upper mold), a mounting groove 37 of the blade positioning sleeve 13 is left between the right end surface of the left wall 17 of the lower mold and the left end surface of the left wall 31 of the lower mold cavity, and the left wall 17 of the lower mold is provided with a U-shaped positioning groove 21 with the lower end completely matched with the blade positioning pin 14. The position of the upper die left wall 29 matched with the blade positioning sleeve 13 is provided with a positioning sleeve accommodating through groove 23. When the blade body 16 is manufactured, the blade positioning sleeve 13 with the positioning pin 14 is firstly installed on the blade handle 15 through the bolt 12, then the blade body 16 is manufactured by placing the blade positioning sleeve and the blade handle together in the lower die cavity 28, and finally the upper die 1 is subjected to die assembly and hot pressing forming.
Naturally, the invention also relates to other embodiments, and those skilled in the art can make corresponding changes and modifications according to the invention without departing from the spirit and substance of the invention, and these corresponding changes and modifications should be considered as improvements in the equivalent technology, and fall within the scope of protection of the claims of the invention.
Claims (9)
1. The utility model provides a preparation mould of unmanned aerial vehicle blade, its characterized in that: comprises an upper die, a lower die and a positioning pin I; the die cavity is completely matched with the blade body of the blade, and is divided into an upper die cavity and a lower die cavity on a curved surface formed by the connecting line of the maximum contour lines of the front edge and the rear edge of the blade body; the end walls of the upper die and the lower die at one end of the petiole, namely the left walls of the upper die cavity and the lower die cavity, are provided with semicircular holding grooves of the petiole; the lower die is used for cutting blocks rightwards from a left reverse angle zero-degree line position on the end wall of a lower die cavity corresponding to the trailing edge of the blade, namely the front wall of the lower die cavity, and the lower die consists of a lower die block and blocks detachably fixed on the upper end surface of the lower die block; the right end surface of the cutting block corresponds to the starting position of the arc transition of the tail end of the blade tip of the blade body, the lower end surface of the cutting block is lower than the lowest point of the intersection line of the front wall of the lower die cavity and the bottom surface of the lower die cavity and is higher than the bottom surface of the lower die block, the rear end surface of the cutting block is the inner end surface of the front wall of the lower die cavity, and the front end surface of the cutting block is not larger than; the left end and the right end of the upper end surface of the lower die block are respectively provided with a symmetrical positioning pin I, the corresponding position of the lower end surface of the upper die is provided with a positioning hole I, and after die assembly is carried out, the positioning pins I are positioned in the positioning holes I; the front wall and the rear wall of the upper die block and the lower die block are respectively and uniformly provided with a fixing mechanism, and after die assembly, the upper die block and the lower die block are fixed together by the fixing mechanism.
2. The manufacturing mold of the unmanned aerial vehicle blade of claim 1, characterized in that: the left walls of the upper die cavity and the lower die cavity of the upper die block and the lower die block extend to the left ends to form the left walls of the upper die and the lower die, an installation groove of a blade positioning sleeve is reserved between the right end surface of the left wall of the lower die and the left end surface of the left wall of the lower die cavity, and the left wall of the lower die is provided with a U-shaped positioning groove of which the lower end is completely matched with the blade positioning pin; and a positioning sleeve accommodating through groove is formed in the position, matched with the blade positioning sleeve, of the left wall of the upper die.
3. The manufacturing mold of the unmanned aerial vehicle blade of claim 1 or 2, wherein: the structure that the stripping and slicing detachably is fixed on the upper end face of the lower die block is as follows: the upper end surface of the lower die block is uniformly provided with a plurality of bolt holes I and two positioning holes III which are symmetrical left and right at the position where the cutting block is located; a plurality of bolt counter bores and positioning pins III matched with the two positioning holes III are uniformly arranged at corresponding positions on the cutting block; the cutting block and the lower die sub-block are positioned by a positioning pin III and fixed together by a bolt III.
4. The manufacturing mold of the unmanned aerial vehicle blade of claim 3, characterized in that: the fixing mechanism comprises an angular plate lifting module fixed on the front or rear wall of the upper die by a screw and an angular plate pressing block fixed on the front or rear wall of the lower die block by a screw; the upper wall of the lifting module is provided with a threaded hole matched with the long bolt, and the upper wall of the pressurizing block is provided with a unthreaded hole which is communicated with the threaded hole in the upper wall of the lifting module and is matched with the long bolt; the lifting module and the pressurizing block are fixed together through a long bolt and a nut I which are connected in the threaded hole and the unthreaded hole.
5. The manufacturing mold of the unmanned aerial vehicle blade of claim 4, characterized in that: and a positioning sleeve I is arranged in the positioning hole I of the upper die.
6. The manufacturing mold of the unmanned aerial vehicle blade of claim 1 or 2, wherein: the fixing mechanism comprises an angular plate lifting module fixed on the front or rear wall of the upper die by a screw and an angular plate pressing block fixed on the front or rear wall of the lower die block by a screw; the upper wall of the lifting module is provided with a threaded hole matched with the long bolt, and the upper wall of the pressurizing block is provided with a unthreaded hole which is communicated with the threaded hole in the upper wall of the lifting module and is matched with the long bolt; the lifting module and the pressurizing block are fixed together through a long bolt and a nut I which are connected in the threaded hole and the unthreaded hole.
7. The manufacturing mold of the unmanned aerial vehicle blade of claim 6, wherein: and a positioning sleeve I is arranged in the positioning hole I of the upper die.
8. The manufacturing mold of the unmanned aerial vehicle blade of claim 3, characterized in that: and a positioning sleeve I is arranged in the positioning hole I of the upper die.
9. The manufacturing mold of the unmanned aerial vehicle blade of claim 1 or 2, wherein: and a positioning sleeve I is arranged in the positioning hole I of the upper die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922126691.0U CN212421914U (en) | 2019-12-03 | 2019-12-03 | Manufacturing die for unmanned aerial vehicle blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922126691.0U CN212421914U (en) | 2019-12-03 | 2019-12-03 | Manufacturing die for unmanned aerial vehicle blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212421914U true CN212421914U (en) | 2021-01-29 |
Family
ID=74276770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922126691.0U Active CN212421914U (en) | 2019-12-03 | 2019-12-03 | Manufacturing die for unmanned aerial vehicle blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212421914U (en) |
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2019
- 2019-12-03 CN CN201922126691.0U patent/CN212421914U/en active Active
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