CN212190746U - Forming device for preventing orifice flanging from cracking - Google Patents
Forming device for preventing orifice flanging from cracking Download PDFInfo
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- CN212190746U CN212190746U CN202020743610.1U CN202020743610U CN212190746U CN 212190746 U CN212190746 U CN 212190746U CN 202020743610 U CN202020743610 U CN 202020743610U CN 212190746 U CN212190746 U CN 212190746U
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Abstract
The utility model discloses a forming device for preventing orifice flanging from cracking, which comprises a base, a blank holder, a knurled screw and a forming pressure rod, wherein the base is provided with a boss, the upper end surface of the boss is a supporting molded surface matched with a part, the upper end surface of the boss is provided with a first through hole which penetrates through the base, the inner diameter of the first through hole is larger than the inner diameter of the orifice flanging on the part, and the base is circumferentially provided with a first connecting screw hole outside the boss; a second through hole penetrating through the blank holder in the thickness direction is formed in the blank holder, the inner diameter of the second through hole is larger than that of the first through hole, a second connecting screw hole is formed in the blank holder and in the circumferential direction of the outer side of the second through hole, a groove is formed in the lower end face of the blank holder, and the groove is communicated with the second through hole; a plurality of knurled screws are disassembled into the first threaded connecting hole and the second threaded connecting hole, and the base is connected with the blank holder; the forming pressing rod is a variable cross-section round rod and comprises a connecting section and a spinning forming section, the cross-section diameter of the spinning forming section is gradually increased from the tail end, and the maximum diameter of the cross-section round rod is larger than the inner diameter of a flanging hole opening of a part. The utility model discloses assembly, manufacturing are simple relatively, and it is comparatively convenient in the use, the steady quality, part appearance quality is flawless after the shaping.
Description
Technical Field
The utility model relates to an assembly group location for the turn-ups in part drill way device, specifically speaking are a forming device who is used for certain part drill way turn-ups on the aircraft, and the device will ensure the size behind the turn-ups shaping, guarantees that part intensity and outward appearance do not obtain the fracture, corrugate.
Background
In the part product shown in FIG. 1, the part material 3A21, the material thickness is 0.8, and the part orifice flanging has two important indexes: firstly, guarantee the shaping size: bore diameter
Height of the flange
(see FIG. 1 for a representation). Secondly, the molding effect is as follows: the orifice after flanging is not allowed to crack and wrinkle, and the thinning amount of the plate is required to meet the technical requirements of HB 5800-1999.
Disclosure of Invention
To above technical problem, the utility model aims at providing a prevent forming device of drill way turn-ups fracture, easy operation is reliable, guarantees drill way turn-ups size meet the requirements, prevents drill way turn-ups fracture.
The utility model discloses a realize through following technical scheme:
a forming device for preventing orifice flanging from cracking comprises,
the base is provided with a boss, the upper end face of the boss is a supporting molded surface matched with the part, the upper end face of the boss is provided with a first through hole penetrating through the base, the inner diameter of the first through hole is larger than that of an opening of an upper flanging of the part, and the base is circumferentially provided with a first connecting screw hole outside the boss;
the blank holder is provided with a second through hole penetrating through the blank holder in the thickness direction, the inner diameter of the second through hole is larger than that of the first through hole, a second connecting screw hole is formed in the blank holder and in the circumferential direction of the outer side of the second through hole, a groove is formed in the lower end face of the blank holder, and the groove is communicated with the second through hole;
the knurled screws are disassembled into the first threaded connecting hole and the second threaded connecting hole, and the base is connected with the blank holder;
the forming pressing rod is a variable cross-section round rod and comprises a spinning forming section, the cross-section diameter of the spinning forming section is gradually increased from the tail end, and the maximum diameter of the cross-section is larger than the inner diameter of a flanging hole opening of the part.
Preferably, the edge of the bearing profile of the boss is chamfered.
Preferably, the inner diameter of the recess is larger than the outer diameter of the support profile.
Preferably, the spinning forming section comprises a plurality of coaxial cylindrical surfaces with different outer diameters, and the cylindrical surfaces with different outer diameters are transited through a curved surface.
Preferably, the connecting section of the forming pressure rod is connected with a manual bench drill.
Compared with the prior art, the utility model has the characteristics of it is following:
1. relatively simple assembly and manufacture, convenient use and stable quality,
2. the appearance quality of the formed part is free from defects, and the effect is good
3. Meets the size requirement of parts, and has stable and reliable strength
4. The smooth delivery of the product is ensured, and meanwhile, good economic benefits are created.
Drawings
FIG. 1 is a schematic view of a part product;
FIG. 2 is an assembly view of the structure of the molding apparatus;
FIG. 3 is a view showing the construction of the base;
FIG. 4 is a view of a blank holder;
FIG. 5 is a view showing a knurled bolt;
FIG. 6 is a view showing the structure of the molding press bar.
Detailed Description
The invention will be further described with reference to the accompanying drawings, but the scope of protection claimed is not limited thereto.
According to the part structure analysis shown in fig. 1, in general, a female die and a male die are designed according to a molded surface for stamping in a mold structure for forming a flanged edge of an orifice, a plate material feeding is firstly subjected to plastic deformation through a forming bottom hole, and the forming size is realized through the plastic deformation of the orifice. The thinning amount of the material is increased due to the abrupt change of the structure of the forming orifice, so that the orifice is thinned and cracked to different degrees after the part is formed. In view of the above technical problems, the following forming device for preventing the orifice flange from cracking is designed in the present embodiment.
Prevent forming device structure of drill way turn-ups fracture includes: base 1, blank holder 2, knurling screw 3 and shaping depression bar 4 (refer to fig. 2-6), wherein the function of each subassembly is as follows:
1. a workpiece blank is placed on the surface of the base 1, and a boss of the base 1 is matched and glided with a part (shown in figure 3);
2. the blank holder 2 is placed on the surface of a workpiece blank, and the groove is kept away according to the outline dimension of the part (see figure 4);
3. the knurled screw 3 is used for connecting the base 1 with the blank holder 2 (see figure 5);
4. the profiled strut 4 is designed with a variable cross-section according to the final dimensions of the part (see fig. 6).
The workpiece blank is horizontally placed on the supporting molded surface of the base 1, the size of the boss is matched with that of the workpiece blank in a sliding mode, after the workpiece blank is placed on the boss of the base 1, the blank holder 2 is horizontally placed on the surface of the workpiece blank, the knurled screw 3 penetrates through the second connecting screw hole of the blank holder 2 to be connected and locked with the first connecting screw hole of the base 1, and the workpiece blank is positioned and clamped. The forming pressure lever 4 is connected with a manual bench drill, and the forming pressure lever 4 completes the forming of the orifice flanging by the action of slowly pressing downwards and along the circumference in a machining mode of the bench drill.
The forming principle of the orifice flanging is as follows: through the processing mode of bench drill rotary cutting, design into the structure of gradual change diameter, fillet transition with shaping depression bar 4, shaping depression bar 4 passes through work piece blank bottom hole size, and the diameter is by little grow gradual change, and slow follow vertical direction, two directions of circumferencial direction carry out the spinning to the flanging hole, and panel plastic deformation can not take place abrupt sudden change, and panel is walked the material atress evenly in the forming process, reaches the dimensional tolerance requirement of part. The structure solves the problem that the material becomes thinner and the opening of the plate is cracked after flanging effectively by controlling the forming speed of the plate and changing the forming direction. The part is formed by the method, the flanging hole opening is not cracked, the appearance is free from defects, and the thinning amount of the plate meets the technical requirement of HB 5800-1999.
The operation steps of using the forming device for preventing the orifice flanging from cracking are as follows:
1. the workpiece blank is horizontally placed on the supporting molded surface of the base 1;
2. the blank holder 2 is horizontally placed on the surface of the workpiece blank;
3. the knurled screw 3 penetrates through a second connecting screw hole of the blank holder 2 and a first connecting screw hole of the base 1 to connect and lock the blank holder 2 and the base 1, and the positioning and clamping action of a workpiece blank is completed;
4. the molding press rod 4 and the manual bench drill are clamped;
5. an operator slowly performs spinning on the flanging hole through a manual bench drill;
6. and removing the forming press rod 4 and taking out the part.
Claims (5)
1. The utility model provides a prevent forming device of drill way turn-ups fracture which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the base (1), there is a boss on the said base (1), the upper end of the boss is the supporting profile adapted with part, there is the first through hole which runs through the base (1) on the upper end of the boss, the internal diameter of the first through hole is greater than the internal diameter of the part turn-ups drill way, there are first connection screw holes on the base (1) and on the outside circumference of boss;
the blank holder (2) is provided with a second through hole penetrating through the blank holder (2) in the thickness direction, the inner diameter of the second through hole is larger than that of the first through hole, a second connecting screw hole is formed in the blank holder (2) in the circumferential direction of the outer side of the second through hole, a groove is formed in the lower end face of the blank holder (2), and the groove is communicated with the second through hole;
the knurled screws (3) are disassembled into the first threaded connecting hole and the second threaded connecting hole, and the base (1) is connected with the blank holder (2);
the forming pressing rod (4) is a variable cross-section round rod and comprises a connecting section and a spinning forming section, the cross-section diameter of the spinning forming section is gradually increased from the tail end, and the maximum diameter of the cross-section round rod is larger than the inner diameter of a flanging hole opening of a part.
2. The forming device for preventing the orifice flanging from cracking as claimed in claim 1, wherein: the edge of the bearing profile of the boss is chamfered.
3. The forming device for preventing the orifice flanging from cracking as claimed in claim 1, wherein: the inner diameter of the groove is larger than the outer diameter of the bearing profile.
4. The forming device for preventing the orifice flanging from cracking as claimed in claim 1, wherein: the spinning forming section comprises a plurality of coaxial cylindrical surfaces with different outer diameters, and the cylindrical surfaces with different outer diameters are transited through a curved surface.
5. The forming device for preventing the orifice flanging from cracking as claimed in claim 1, wherein: and the connecting section of the forming pressure lever (4) is connected with a manual bench drill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020743610.1U CN212190746U (en) | 2020-05-08 | 2020-05-08 | Forming device for preventing orifice flanging from cracking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020743610.1U CN212190746U (en) | 2020-05-08 | 2020-05-08 | Forming device for preventing orifice flanging from cracking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212190746U true CN212190746U (en) | 2020-12-22 |
Family
ID=73813690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020743610.1U Active CN212190746U (en) | 2020-05-08 | 2020-05-08 | Forming device for preventing orifice flanging from cracking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212190746U (en) |
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2020
- 2020-05-08 CN CN202020743610.1U patent/CN212190746U/en active Active
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