Integrated spinning forming die for water-cooling heat shield lower flange

Abstract

The utility model discloses an integrated spinning forming die for a lower flange of a water-cooled heat shield, which comprises a combined die for processing taper and a spinning die for processing a spinning flange, the combined die comprises a frustum die and a cylindrical die, the frustum die is matched with the spinning die to form the spinning flange, and the cylindrical die is matched with the cylindrical die to form the spinning flange. The spinning die comprises a pressing table body, a boss is formed on the pressing table body, a forming round corner is formed on the circumference of the bottom of the boss, a chamfer is formed on the circumference of the edge of the pressing table body, the chamfer is tangent to the forming round corner, and the chamfer and the forming round corner form a forming area of a spinning flange. According to the utility model, the flange and the inner cylinder are subjected to integrated spinning forming, the taper of the blank is processed by utilizing the matching of the frustum mold, the cylindrical mold and the top pressing mold, and then the end folded edge of the blank is subjected to extrusion forming by virtue of the matching of the frustum mold and the spinning mold, so that the process is simplified, the production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water-cooled heat shields, in particular to a water-cooled heat shield lower flange integrated spinning forming die. Background Art

[0002] The water-cooled heat shield generally uses metal plates to make the inner shell and outer shell, which are closed by the lower flange. Then the cooling water is passed into the cavity formed by the inner shell, outer shell and lower flange through the water inlet pipe. The flow of cooling water is used to take away the high-temperature heat on the inner and outer walls of the water-cooled heat shield. Then the cooling water is discharged from the water outlet pipe to speed up the cooling efficiency of the entire conical cavity area inside the water-cooled heat shield, so that the cavity area of ​​the water-cooled heat shield meets the forming temperature requirements of the crystal rod.

[0003] The lower flange is generally machined by lathe or milling machine. After the production is completed, the inner cylinder and the outer cylinder are welded to the corresponding positions of the flange by welding. Both the inner cylinder and the outer cylinder are rolled and welded. This production method has high production cost and low efficiency, which is not conducive to improving economic benefits. Therefore, a water-cooled heat shield lower flange integrated spinning mold is designed. The lower flange and the inner cylinder are integrated by spinning, which improves the strength of the product, simplifies the production process, saves materials, and eliminates the welding process, reducing production costs and improving production efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide an integrated spinning forming die for the flange under a water-cooled heat shield, wherein the taper of the blank is processed by the cooperation of a frustum die, a cylindrical die and a top pressure die, and then the flange edge of the blank is extruded by the cooperation of the frustum die and the spinning die, so that the flange and the inner cylinder are integrated into one, thereby simplifying the process, improving production efficiency, reducing production costs, and at the same time improving the molding strength and precision of the product.

[0005] The utility model provides the following technical solution: an integrated spinning forming mold for the flange under a water-cooled heat shield, comprising a combined mold for processing a taper and a spinning mold for processing a spinning flange, the combined mold comprising a frustum mold and a cylindrical mold, the frustum mold cooperates with the spinning mold to form the spinning flange, the spinning mold comprises a press plate body, a boss is formed on the press plate body, a molding fillet is provided on the bottom circumference of the boss, a chamfer is formed on the edge circumference of the press plate body, the chamfer is tangent to the molding fillet, and the chamfer and the molding fillet constitute a molding area of ​​the spinning flange.

[0006] Furthermore, the radius of the molding fillet is 8 mm.

[0007] Furthermore, in order to facilitate the clamping of the spinning mold, the bottom of the press table body is also connected to an optical axis for clamping.

[0008] In order to disassemble the cylindrical mold, the frustum mold includes a frustum body, which is a conical rotating body. A threaded hole for connecting with the cylindrical mold is provided on the end surface of the frustum body.

[0009] Furthermore, the cone angle of the frustum body is 21°.

[0010] Furthermore, in order to facilitate the clamping of the combined mold, the end surface of the frustum body is also connected to the optical axis.

[0011] Furthermore, the connection strength between the cylindrical mold and the frustum mold is increased. The cylindrical mold includes a cylindrical body. The cylindrical body is provided with a countersunk hole, and the countersunk hole is used to penetrate a bolt connected to the frustum mold.

[0012] In order to prevent heat accumulation from affecting the forming of the blank, the spinning mold, the frustum mold and the cylindrical mold are all made of 5CrMnMo, which has good hardness, wear resistance, toughness and thermal conductivity.

[0013] Compared with the prior art, the beneficial effects achieved by the utility model are: the taper of the blank is processed by the cooperation of the frustum mold, the cylindrical mold and the top pressure mold, and then the end fold of the blank is extruded by the cooperation of the frustum mold and the spinning mold, and the flange and the inner cylinder are integrated into one, which simplifies the process, improves production efficiency, reduces production costs, and at the same time improves the molding strength and precision of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a three-dimensional diagram of the spinning mold of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the combined mold of the utility model;

[0017] Figure 3 It is a side view of the cylindrical mold of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the spinning die of the utility model;

[0019] Figure 5 It is a schematic diagram of taper processing of blank of the utility model;

[0020] Figure 6 It is a schematic diagram of processing the end face folding of the blank of the utility model;

[0021] In the figure: 1. frustum mold; 11. threaded hole; 12. optical axis; 13. frustum body; 2. cylindrical mold; 21. countersunk hole; 22. cylindrical body; 3. bolt; 4. spinning mold; 41. press body; 42. boss; 43. forming fillet; 44. chamfer; 45. optical axis; 5. blank; 6. top pressing mold; 7. roller. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0023] See also Figure 1 , 2, 5 and 6, the utility model provides a technical solution: a water-cooled heat shield lower flange integrated spinning forming die, including a combined die for processing taper and a spinning die 4 for processing spinning flange, the combined die is located on the spindle of the left device, the spinning die 4 is located on the spindle of the right device, when processing taper, the spindle of the right device is connected with a top pressing die 6, the top pressing die 6 is a cylinder, which is used to press the blank 5 on the end face of the combined die, the top pressing die 6 cooperates with the combined die to clamp the blank 5, and the circular plate blank 5 with holes is spun by a roller 7, and the blank 5 is spun to fit the surface of the combined die. The combined mold includes a frustum mold 1 and a cylindrical mold 2. The cylindrical mold 2 is connected to the side of the frustum mold 1. The center of the blank 5 is attached to the end face of the cylindrical mold 2. The other parts of the blank 5 are folded along the side of the cylindrical mold 2 and are sequentially extruded inward along the cylindrical mold 2 and the frustum mold 1. The whole is attached to the surface of the combined mold to complete the taper processing. Then, the cylindrical mold 2 is removed, and the folded edge on the end face of the cylindrical mold 2 is cut. At the same time, the extension length of the blank 5 on the cylindrical mold 2 can be controlled. When processing the end face folded edge, the spinning mold 4 replaces the top pressing mold 6, and the frustum mold 1 and the spinning mold The tool 4 cooperates with the spinning flange to form. The spinning die 4 includes a press table body 41, and a boss 42 is formed on the press table body 41. The boss 42 is formed by opening an annular groove on the circumference of the upper end of the press table body 41. The depth of the annular groove can control the height of the boss 42, and further adjust the distance between the formed flange edge and the frustum die 1 to adapt to the forming of lower flanges of different specifications. A forming fillet 43 is opened on the bottom circumference of the boss 42, and a chamfer 44 is formed on the edge circumference of the press table body 41. The chamfer 44 is tangent to the forming fillet 43. The chamfer 44 and the forming fillet 43 constitute the forming area of ​​the spinning flange, which is advantageous for The end face of the blank 5 is extruded by the spinning die 4. Under the action of the spinning die 4, the end face of the blank 5 is deformed, and the end of the lower flange is extruded into a flange edge. This processing method integrates the lower flange into an integrated spinning shape, simplifies the process, and saves materials compared to the lower flange of the water-cooled heat shield formed by the rolling welding process. At the same time, the welding process is omitted, and the quality of the weld is no longer required to be tested. The integrated molding improves the strength of the product and greatly improves the production efficiency, shortening the single 5-8 hours to a single 2-3 hours. The integrated molding also improves the molding accuracy of the product and reduces the production cost.

[0024] like Figure 1 and 4 As shown, the radius of the formed fillet 43 is 8 mm. The formed fillet 43 is a bending area and is cut and formed by an R8 spherical turning tool. The radius size of the formed fillet 43 can be cut and formed by spherical cutters of different radii according to the product requirements of the lower flange.

[0025] The bottom of the press table body 41 is also connected to an optical axis 45 for clamping. The optical axis 45 is used to be clamped on a chuck of the right frame to complete the clamping of the spinning mold 4.

[0026] like Figure 2 As shown, the frustum mold 1 includes a frustum body 13, which is a conical rotating body. A threaded hole 11 for connecting with the cylindrical mold 2 is provided on the end surface of the frustum body 13.

[0027] The cone angle of the cone body 13 is 21°. When processing the cone mold 1, the blank of the mold is placed on the lathe equipment, and then the tool holder is rotated so that the moving direction of the tool holder forms an angle of 10.5° with the axis of rotation of the workpiece. Through rough machining and fine machining, the cone angle can be adjusted according to the shape of the product by changing the angle between the tool holder and the axis of rotation of the workpiece.

[0028] The end surface of the frustum body 13 is also connected to the optical axis 12, and the frustum mold 1 is clamped in the chuck of the machine tool through the optical axis 12.

[0029] like Figure 2 and 3 As shown, the cylindrical mold 2 includes a cylindrical body 22, on which a countersunk hole 21 is opened. The countersunk hole 21 is used to penetrate a bolt 3 connected to the frustum mold 1. The cylindrical mold 2 and the frustum mold 1 are connected together by the bolt 3, thereby enhancing the connection strength between the cylindrical mold 2 and the frustum mold 1.

[0030] The spinning die 4, the frustum die 1 and the cylindrical die 2 are all made of 5CrMnMo. The steel of this material has good heat resistance, high temperature strength and toughness. The heat conduction of the products made therefrom is fast and the surface heat will not accumulate on the surface.

[0031] The integrated spinning process of the lower flange: first, clamp the circular plate blank with holes between the combined mold composed of the frustum mold and the cylindrical mold and the top pressure mold, start the main shaft of the equipment and heat the blank, then use the roller to approach the blank and spin the blank to make the blank completely fit on the surface of the frustum mold and the cylindrical mold, then disassemble the cylindrical mold, and put the blank that has completed the taper processing on the frustum mold again, cut the blank flange on the end face of the cylindrical mold, and then replace the top pressure mold with the spinning mold, and use the coordinated extrusion of the spinning mold and the frustum mold to bend the end of the blank to complete the integrated forming of the lower flange. This production method combines the inner cylinder and the flange into one piece, simplifies the production process, eliminates rolling and welding, and no longer needs to monitor the weld quality, improves the strength of the product, and at the same time improves production efficiency and reduces production costs.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An integrated spinning mold for the flange under the water-cooled heat shield, comprising a combined mold for processing the taper and a spinning mold for processing the spinning flange, characterized in that: The combined mold includes a frustum mold and a cylindrical mold. The frustum mold cooperates with the spinning mold to form a spinning flange. The spinning mold includes a press plate body, a boss is formed on the press plate body, a molding fillet is opened on the bottom circumference of the boss, and a chamfer is formed on the edge circumference of the press plate body. The chamfer is tangent to the molding fillet, and the chamfer and the molding fillet constitute the molding area of ​​the spinning flange.

2. The integrated spinning die for the lower flange of the water-cooled heat shield according to claim 1 is characterized in that: The radius of the molding fillet is 8 mm.

3. The integrated spinning die for the lower flange of the water-cooled heat shield according to claim 1 is characterized in that: The bottom of the press platform body is also connected with an optical axis for clamping.

4. The integrated spinning die for the lower flange of the water-cooled heat shield according to claim 1 is characterized in that: The frustum mold comprises a frustum body, which is a conical rotating body. A threaded hole for connecting with a cylindrical mold is provided on the end surface of the frustum body.

5. The integrated spinning die for the lower flange of the water-cooled heat shield according to claim 4 is characterized in that: The cone angle of the frustum body is 21°.

6. The integrated spinning die for the lower flange of the water-cooled heat shield according to claim 4 is characterized in that: The end surface of the frustum body is also connected to the optical axis.

7. The integrated spinning forming die for the lower flange of the water-cooled heat shield according to claim 1 is characterized in that: The cylindrical mold comprises a cylindrical body, and a countersunk hole is provided on the cylindrical body. The countersunk hole is used to penetrate a bolt connected with the frustum mold.

8. The one-piece spinning die for the lower flange of the water-cooled heat shield according to any one of claims 1 to 7, characterized in that: The spinning die, the frustum die and the cylindrical die are all made of 5CrMnMo.

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