Aero-engine thin-walled part bar hole punching die structure

Abstract

The utility model relates to a kind of aero-engine thin-walled part strip-shaped hole punching die structure, it is related to mould technical field, including male die, the male die includes male die installation part and the male die working part of one end fixed connection in the male die installation part, the thickness of the male die installation part is greater than the thickness of the male die working part, the length of the male die working part is greater than the thickness of the thin-walled part to be punched, and not greater than 3mm.The utility model can relatively increase male die strength, effectively reduce the risk of male die wear even fracture, prolong the service life of mould.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a structure for punching strip holes in thin-walled parts of aero-engines. Background Technology

[0002] In the prior art, when processing strip holes in high-temperature alloy sheet metal stamping parts for aero-engines with a material thickness of 0.1 to 1 mm, especially thin-walled parts with a strip hole width between 0.3 and 4 mm, a male die is usually used to stamp the thin-walled parts. However, in order to be suitable for the strip hole punching size, the traditional male die mounting part and working part are integrated into one piece with the same material thickness. The overall size of the male die is long and thin, which makes the male die very weak and easy to wear or even break. Utility Model Content

[0003] This invention provides a punching die structure for strip holes in thin-walled parts of aero-engines, which can relatively increase the strength of the male die, effectively reduce the risk of wear or even breakage of the male die, and extend the service life of the die.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A punching die structure for a thin-walled part of an aero-engine includes a male die, which includes a male die mounting part and a male die working part fixedly connected to the male die mounting part at one end. The thickness of the male die mounting part is greater than the thickness of the male die working part, and the length of the male die working part is greater than the thickness of the thin-walled part to be punched, but not greater than 3mm.

[0005] The beneficial effects of this utility model are: during stamping, the workpiece is punched by the moving male die working part. Since the thickness of the male die mounting part is greater than the thickness of the male die working part, the male die as a whole presents a structure that is thicker at the top and thinner at the bottom. Compared with the long and thin male dies in the prior art, the strength of the male die can be relatively increased. At the same time, the length of the male die working part is controlled to not exceed 3mm, so as to reduce the risk of wear or even breakage of the male die and extend the life of the male die.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, it also includes a pressure plate for pressing down the workpiece, the pressure plate having a through guide hole, and the male mold mounting part and the male mold working part are both slidably connected to the guide hole.

[0008] Furthermore, a guide slope is provided inside the guide hole, and a transition slope that cooperates with the guide slope is connected between the male mold mounting part and the male mold working part.

[0009] Furthermore, it also includes a male mold base and multiple elastic devices. The male mold mounting part is detachably connected to the male mold base. Each of the elastic devices is evenly distributed between the male mold base and the pressure plate, and both ends of each elastic device are respectively connected to the male mold base and the pressure plate.

[0010] Furthermore, it also includes a fixed base and a pressure head fixedly connected to the fixed base. The male mold base is detachably connected to the fixed base by fasteners, and the pressure head is used to connect to the punch press slide.

[0011] Furthermore, the end of the male mold mounting part is T-shaped and snaps into the male mold seat, and the pressure head abuts against the male mold mounting part.

[0012] Furthermore, it also includes a female mold and a female mold base. The female mold is detachably connected to the female mold base and includes a female mold mounting part and a female mold working part installed in the female mold mounting part. The female mold mounting part and the fixed base are connected by multiple guide pillars. The female mold working part has a through-hole for material discharge. The pressure plate presses the workpiece down onto the female mold. The material discharge hole is connected to the guide hole, and the female mold base has a through-hole for material discharge that is connected to the material discharge hole.

[0013] Furthermore, the female mold working part includes a first working part and a second working part, both fixedly installed within the female mold mounting part, the first working part and the second working part abutting against each other to form the material leakage hole.

[0014] Furthermore, the pressure plate has a clearance hole on the lower side facing the female mold, and a limit block and a locking screw are provided in the clearance hole. The locking screw passes through the limit block and is threaded to the working part of the female mold.

[0015] Furthermore, the limiting block has a through-hole, and the locking screw passes through the through-hole. Attached Figure Description

[0016] Figure 1 This is an isometric view of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 For the present utility model Figure 2 Enlarged view of section A in the middle; Figure 4 This is a structural diagram of the male mold of this utility model; Figure 5 This is a top view of the female mold of this utility model; Figure 6 This is a connection structure diagram of the limiting block and locking screw of this utility model.

[0017] The attached diagram lists the components represented by each number as follows: 1. Male mold; 11. Male mold mounting part; 12. Male mold working part; 13. Transition slope; 2. Pressure plate; 21. Guide hole; 22. Guide slope; 23. Clearance hole; 3. Male mold base; 31. Fixed base; 32. Pressure head; 4. Elastic force device; 5. Female mold; 51. Female mold mounting part; 52. Female mold working part; 521. First working part; 522. Second working part; 53. Material discharge hole; 54. Limiting block; 541. Strip hole; 55. Locking screw; 6. Female mold base; 61. Discharge hole; 7. Guide post. Detailed Implementation

[0018] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0019] Example 1 like Figures 1-4 A punching die structure for a thin-walled part of an aero-engine includes a male die 1. The male die 1 includes a male die mounting part 11 and a male die working part 12 fixedly connected to the male die mounting part 11 at one end. The thickness of the male die mounting part 11 is greater than the thickness of the male die working part 12. The length of the male die working part 12 is greater than the thickness of the thin-walled part to be punched, but not greater than 3mm.

[0020] The beneficial effects of this embodiment are: during stamping, the workpiece is punched by the moving male die working part 12. Since the thickness of the male die mounting part 11 is greater than the thickness of the male die working part 12, the male die 1 presents a structure that is thicker at the top and thinner at the bottom. Compared with the long and thin male die 1 in the prior art, the strength of the male die 1 can be relatively increased. At the same time, the length of the male die working part 12 is controlled to not exceed 3mm, so as to reduce the risk of wear or even breakage of the male die 1 and extend the life of the male die 1.

[0021] Specifically, the difference between the length of the male die working part 12 and the thickness of the thin-walled part to be punched can be 2mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm or 2.9mm.

[0022] In this embodiment, the male mold mounting part 11 and the male mold working part 12 have the same length in the horizontal direction, i.e., the length of the strip hole, which can effectively reduce the manufacturing difficulty of the male mold 1.

[0023] Example 2 like Figures 1-4 Based on Embodiment 1, the punching die structure for the thin-walled part of the aero-engine of this utility model also includes a pressure plate 2 for pressing down the workpiece. The pressure plate 2 has a through guide hole 21, and the male mold mounting part 11 and the male mold working part 12 are slidably connected to the guide hole 21.

[0024] The beneficial effect of the preferred solution in the above embodiments is that, during use, when the moving male die working part 12 performs punching operation on the workpiece, the pressure plate 2 can guide the male die 1 to reduce the possibility of breakage of the male die 1; at the same time, the pressure plate 2 presses down on the workpiece to reduce the abrupt change of the hole shape of the part by fully pressing the material, so as to ensure the punching quality.

[0025] Example 3 like Figures 1-4 Based on embodiments 1 and 2, a guide slope 22 is provided in the guide hole 21, and a transition slope 13 that cooperates with the guide slope 22 is connected between the male mold mounting part 11 and the male mold working part 12.

[0026] The beneficial effect of adopting the preferred solution in the above embodiments is that, in the punching operation, the guide slope 22 can guide the movement of the male die 1, and at the same time, the guide slope 22 and the transition slope 13 cooperate with each other to limit the stroke of the male die 1.

[0027] Example 4 like Figures 1-4 Based on embodiments 1-3, the punching die structure for the strip hole of the thin-walled part of the aero-engine of this utility model also includes a male die base 3 and multiple elastic devices 4. The male die mounting part 11 is detachably connected to the male die base 3. Each elastic device 4 is evenly distributed between the male die base 3 and the pressure plate 2. The two ends of each elastic device 4 are respectively connected to the male die base 3 and the pressure plate 2.

[0028] The beneficial effect of adopting the preferred solution in the above embodiments is that each male die 1 is installed through the male die base 3, and during stamping, the male die base 3 is driven by the punch press slide to move the male die base 3, thereby driving the male die 1 to perform the stamping action. When the punch press slide moves in the opposite direction, the compressed elastic device 4 can cause the male die base 3 and the male die 1 to move in the opposite direction.

[0029] It should be noted that the working principle and wiring method of the elastic device 4 are commonplace and belong to the conventional methods or common knowledge in this field. Therefore, they will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0030] Example 5 like Figures 1-4 Based on embodiments 1-4, the punching die structure for the strip hole of the thin-walled part of the aero-engine of this utility model also includes a fixed base 31 and a pressure head 32 fixedly connected to the fixed base 31. The male die base 3 is detachably connected to the fixed base 31 by fasteners, and the pressure head 32 is used to connect to the punch press slider.

[0031] The beneficial effect of adopting the preferred solution in the above embodiments is that the connection with the punch press slide is achieved through the fixed seat 31 and the pressure head 32, and the mold closing and opening are achieved through the punch press.

[0032] Example 6 like Figure 2 and Figure 4 Based on embodiments 1-5, the end of the male mold mounting part 11 is T-shaped and is snapped into the male mold base 3, and the pressure head 32 abuts against the male mold mounting part 11.

[0033] The advantage of adopting the preferred solution in the above embodiments is that the male mold mounting part 11 is pressed by the pressure head 32, thereby achieving stable installation of the male mold 1.

[0034] Example 7 like Figure 1 and Figure 2 Based on embodiments 1-6, the punching die structure for the strip hole of the thin-walled part of the aero-engine of this utility model also includes a female die 5 and a female die base 6. The female die 5 is detachably connected to the female die base 6. It includes a female die mounting part 51 and a female die working part 52 installed in the female die mounting part 51. The female die mounting part 51 and the fixed base 31 are connected by a plurality of guide pillars 7. The female die working part 52 is provided with a material leakage hole 53. The pressure plate 2 presses the workpiece down onto the female die 5. The material leakage hole 53 is connected to the guide hole 21, and the female die base 6 is provided with a material discharge hole 61 that is connected to the material leakage hole 53.

[0035] The beneficial effect of adopting the preferred solution in the above embodiments is that, during stamping, the workpiece to be stamped is placed on the female mold 5, and then the fixed seat 31 is moved toward the female mold 5 by the punch press. Under the connection of the spring device 4, the pressure plate 2 moves toward the female mold 5 synchronously and presses the workpiece down onto the female mold 5. Then, the downward pressure is continued, so that the male mold 1 stamps the pressed workpiece to realize the punching operation.

[0036] During the punching process, each guide post 7 can guide the vertical movement of the fixed base 31.

[0037] In addition, the female mold mounting part 51 and the female mold working part 52 are manufactured separately. The female mold working part 52 is inserted into the female mold mounting part 51. When the female mold working part 52 is worn, the operator can directly replace the female mold working part 52, which can reduce the frequency of mold repair and repair costs.

[0038] It should be noted that the working principle and wiring method of the guide post 7 are commonplace and belong to conventional methods or common knowledge in this field. They will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0039] Example 8 like Figure 5Based on embodiments 1-7, the female mold working part 52 includes a first working part 521 and a second working part 522, both of which are fixedly installed in the female mold mounting part 51. The first working part 521 and the second working part 522 abut against each other and form a material leakage hole 53.

[0040] The beneficial effect of adopting the preferred solution in the above embodiments is that manufacturing the female mold working part 52 into a first working part 521 and a second working part 522 can increase the accuracy of the mold discharge hole 53, and have a good guiding effect on the relative movement of the male mold 1 when the mold moves downward, thereby reducing the wear risk of the female mold working part 52.

[0041] Both the first working part 521 and the second working part 522 can be fixed to the female mold mounting part 51 by screws.

[0042] Example 9 like Figure 2 , Figure 3 as well as Figure 6 Based on embodiments 1-8, the pressure plate 2 has a clearance hole 23 on the lower side facing the female mold 5. A limit block 54 and a locking screw 55 are provided in the clearance hole 23. The locking screw 55 passes through the limit block 54 and is threaded to the working part 52 of the female mold.

[0043] The beneficial effect of adopting the preferred solution in the above embodiments is that, during stamping, the limiting block 54 can be locked to the first working part 521 by tightening the locking screw 55, and the side wall of the limiting block 54 abuts against the workpiece to adjust and limit the position of the workpiece, thereby reducing the possibility of the workpiece moving during the stamping operation.

[0044] Example 10 like Figure 3 and Figure 6 Based on embodiments 1-9, the limiting block 54 has a through-hole 541, through which the locking screw 55 passes.

[0045] The beneficial effect of adopting the preferred solution in the above embodiments is that, in use, the workpiece can be indirectly moved by sliding and adjusting the position of the limiting block 54, thereby changing the punching hole position of the workpiece. After the position is determined, tightening the locking screw 55 realizes the workpiece limiting.

[0046] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0051] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A punching die structure for strip holes in thin-walled parts of an aero-engine, characterized in that, The device includes a male mold (1), which includes a male mold mounting part (11) and a male mold working part (12) fixedly connected to the male mold mounting part (11) at one end. The thickness of the male mold mounting part (11) is greater than the thickness of the male mold working part (12), and the length of the male mold working part (12) is greater than the thickness of the thin-walled part to be punched, but not greater than 3mm.

2. The die structure for punching strip holes in thin-walled aero-engine parts according to claim 1, characterized in that, It also includes a pressure plate (2) for pressing down the workpiece, the pressure plate (2) having a through guide hole (21), the male mold mounting part (11) and the male mold working part (12) are both slidably connected to the guide hole (21).

3. The structure of a punching die for a strip hole in a thin-walled part of an aero-engine according to claim 2, characterized in that, The guide hole (21) is provided with a guide slope (22), and a transition slope (13) that cooperates with the guide slope (22) is connected between the male mold mounting part (11) and the male mold working part (12).

4. The structure of a punching die for a strip hole in a thin-walled part of an aero-engine according to claim 2, characterized in that, It also includes a male mold base (3) and multiple elastic devices (4). The male mold mounting part (11) is detachably connected to the male mold base (3). Each of the elastic devices (4) is evenly distributed between the male mold base (3) and the pressure plate (2). The two ends of each elastic device (4) are respectively connected to the male mold base (3) and the pressure plate (2).

5. The structure of a punching die for a strip hole in a thin-walled part of an aero-engine according to claim 4, characterized in that, It also includes a fixed base (31) and a pressure head (32) fixedly connected to the fixed base (31). The male mold base (3) is detachably connected to the fixed base (31) by fasteners, and the pressure head (32) is used to connect to the punch press slide.

6. The structure of a punching die for strip holes in thin-walled parts of an aero-engine according to claim 5, characterized in that, The end of the male mold mounting part (11) is T-shaped and is engaged with the male mold seat (3), and the pressure head (32) abuts against the male mold mounting part (11).

7. The die structure for punching strip holes in thin-walled aero-engine parts according to claim 5, characterized in that, It also includes a female mold (5) and a female mold base (6). The female mold (5) is detachably connected to the female mold base (6). It includes a female mold mounting part (51) and a female mold working part (52) installed in the female mold mounting part (51). The female mold mounting part (51) and the fixed base (31) are connected by multiple guide pillars (7). The female mold working part (52) has a through-hole (53). The pressure plate (2) presses the workpiece down onto the female mold (5). The through-hole (53) is connected to the guide hole (21). The female mold base (6) has a through-hole (61) that is connected to the through-hole (53).

8. The die structure for punching strip holes in thin-walled aero-engine parts according to claim 7, characterized in that, The female mold working part (52) includes a first working part (521) and a second working part (522) that are both fixedly installed in the female mold mounting part (51). The first working part (521) and the second working part (522) abut against each other and form the material leakage hole (53).

9. The structure of a punching die for a strip hole in a thin-walled part of an aero-engine according to claim 7, characterized in that, The pressure plate (2) has a clearance hole (23) on the lower side facing the female mold (5). A limit block (54) and a locking screw (55) are provided in the clearance hole (23). The locking screw (55) passes through the limit block (54) and is threaded to the working part (52) of the female mold.

10. The structure of a punching die for a strip hole in a thin-walled part of an aero-engine according to claim 9, characterized in that, The limiting block (54) has a through-hole (541), and the locking screw (55) passes through the through-hole (541).

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