Wing type blade profiling rapid forming tool capable of compensating springback value

Abstract

A wing type blade profiling rapid prototyping tool capable of compensating the springback amount comprises a lower die part and an upper die part which moves relative to the lower die part to achieve plate profiling. The lower die part comprises a lower bottom plate, a plurality of lower wedge-shaped top pieces arranged in parallel in the front-back direction of the lower bottom plate, a plurality of lower forming pieces connected to the upper portions of the lower wedge-shaped top pieces in a sliding fit mode through slopes, and an adjusting piece a used for adjusting the relative positions of the lower wedge-shaped top pieces on the lower bottom plate in the front-back direction; the guide piece a is used for guiding the lower forming sheet to enable the lower forming sheet to only move in the vertical direction, and the upper die part and the lower die part are consistent in structure; according to the scheme, blade profiling can be completed through one set of forming tool, the mold cost is effectively controlled, meanwhile, the problem of blade inconsistency existing in manual profiling is avoided, and the blade profiling efficiency is greatly improved in the mode of reasonably compensating the springback value.

Description

Technical Field

[0001] The utility model relates to a rapid prototyping tooling for wing-shaped blade pressing with compensable springback amount. Background Art

[0002] Wing-shaped blade fans have the characteristic of high efficiency and are increasingly favored by the market. However, due to the double-layer design of wing-shaped blades (including the windward panel and the leeward panel) and a certain curvature, the forming process is more complex than that of single-board blades. And the forming process of wing-shaped blades is the most important link in the production process of wing-shaped blades.

[0003] The previous forming process of wing-shaped blades is as follows: In small-batch production, it is basically manual pressing, mainly completed by fitters with traditional skills, which requires high comprehensive qualities of personnel. The products rolled out manually have poor consistency. Since the blades are produced in groups, the inconsistency will have a great impact on the final effect. In large-batch production, it is directly formed by a mold. Although this method can ensure the consistency of the blades, the investment is large and the construction period is long. In addition, during the pressing process of wing-shaped blades, due to the material thickness and the mechanical properties of the material itself, there is different amounts of springback, and this springback cannot be actually calculated through theoretical data. More often, several sets of molds are made according to experience, and the curves to be pressed are continuously corrected to compare with the actual curves after springback. The method of using multiple sets of molds to supplement the springback amount will lead to a large increase in time cost and mold cost. Summary of the Invention

[0004] Aiming at the deficiencies in the above problems, the utility model provides a rapid prototyping tooling for wing-shaped blade pressing with compensable springback amount.

[0005] To achieve the above object, the utility model provides a rapid prototyping tooling for wing-shaped blade pressing with compensable springback amount, which includes a lower die part and an upper die part that moves relative to the lower die part to realize the pressing of the plate.

[0006] The lower die part includes a lower bottom plate, a plurality of lower wedge-shaped top pieces arranged in parallel in the front-back direction of the lower bottom plate, a plurality of lower forming pieces slidably connected to the upper parts of the lower wedge-shaped top pieces through inclined surfaces, an adjusting member a for adjusting the relative positions of the lower wedge-shaped top pieces in the front-back direction on the lower bottom plate, and a guiding member a for guiding the lower forming pieces to move only in the vertical direction.

[0007] The upper die part includes an upper top plate, a plurality of upper wedge-shaped top pieces arranged in parallel in the front-back direction of the upper top plate, a plurality of upper forming pieces slidably connected to the lower part of the upper wedge-shaped top pieces through inclined surfaces, an adjusting member b for adjusting the relative positions of the upper wedge-shaped top pieces in the front-back direction on the upper top plate, and a guiding member b for guiding the upper forming pieces to move only in the vertical direction.

[0008] Furthermore, the adjusting member a includes a first end block a formed in the front-back direction of the lower bottom plate, and a plurality of adjusting bolts a screwed onto the first end block a. The two adjusting bolts a are distributed in a group on both sides of the lower wedge-shaped top piece.

[0009] Furthermore, the guiding member a includes a second end block a formed on both the left and right sides of the lower bottom plate and a guiding rod a horizontally spanned between the second end blocks a. A long waist hole a matching the guiding rod a is machined on the lower forming piece.

[0010] Furthermore, the adjusting member b includes a first end block b formed in the front-back direction of the upper top plate, and a plurality of adjusting bolts b screwed onto the first end block b. The two adjusting bolts b are distributed in a group on both sides of the upper wedge-shaped top piece.

[0011] Furthermore, the guiding member b includes a second end block b formed on both the left and right sides of the upper top plate and a guiding rod b horizontally spanned between the second end blocks b. A long waist hole b matching the guiding rod b is machined on the upper forming piece.

[0012] The beneficial effects of the present utility model compared with the prior art are as follows:

[0013] The upper and lower forming surfaces of a conventional stamping die are non-adjustable. This solution can complete the profiling of the blade with a set of forming tooling, effectively controlling the die cost. At the same time, it also avoids the problem of inconsistent blades in manual profiling. By reasonably compensating the springback amount, the profiling efficiency of the blade is greatly improved. Description of the Drawings

[0014] Figure 1 It is a perspective view of a rapid profiling tooling for compensating springback amount in the profiling of airfoil blades;

[0015] Figure 2 It is a sectional view of a rapid profiling tooling for compensating springback amount in the profiling of airfoil blades;

[0016] Figure 3 It is a schematic view of the lower die part involved;

[0017] Figure 4 It is a schematic view of the upper die part involved;

[0018] Figure 5 Schematic diagram of the involved blade (windward panel).

[0019] In the figure:

[0020] 10. Lower die part; 101. Lower bottom plate; 102. Lower wedge-shaped top piece; 103. Lower forming piece; 1031. Long waist hole a; 104. Adjusting part a; 1041. First end block a; 1042. Adjusting bolt a; 105. Guiding part a; 1051. Second end block a; 1052. Guiding rod a;

[0021] 20. Upper die part; 201. Upper top plate; 202. Upper wedge-shaped top piece; 203. Upper forming piece; 2031. Long waist hole b; 204. Adjusting part b; 2041. First end block b; 2042. Adjusting bolt b; 205. Guiding part b; 2051. Second end block b; 2052. Guiding rod b;

[0022] 30. Blade. Specific implementation mode

[0023] As Figure 1 shown, a rapid prototyping tooling for compensating springback amount in airfoil blade pressing of the embodiment of the present utility model includes a lower die part 10 and an upper die part 20 that moves relative to the lower die part 10 to realize pressing of the plate part;

[0024] As Figure 2 , Figure 3 shown, the lower die part 10 includes a lower bottom plate 101, a plurality of lower wedge-shaped top pieces 102 arranged in parallel in the front-back direction along the lower bottom plate 101, a plurality of lower forming pieces 103 slidably connected to the upper part of the lower wedge-shaped top pieces 102 through inclined surfaces, an adjusting part a 104 for adjusting the relative positions of the respective lower wedge-shaped top pieces 102 in the front-back direction on the lower bottom plate 101, and a guiding part a 105 for guiding the lower forming pieces 103 to move only in the vertical direction; the adjusting part a 104 includes a first end block a 1041 formed in the front-back direction on the lower bottom plate 101 and a plurality of adjusting bolts a 1042 screwed on the first end block a 1041, and two adjusting bolts a 1042 are distributed on both sides of the lower wedge-shaped top piece 102 as a group; the guiding part a 105 includes a second end block a 1051 formed on both the left and right sides of the lower bottom plate 101 and a guiding rod a 1052 horizontally erected between the second end blocks a 1051, and a long waist hole a 1031 matching the guiding rod a 1052 is machined on the lower forming piece 103;

[0025] As Figure 2 , Figure 4As shown in the figure, the upper die part 20 includes an upper top plate 201, a plurality of upper wedge-shaped top pieces 202 arranged in parallel in the front-back direction of the upper top plate 201, a plurality of upper forming pieces 203 slidably connected to the lower part of the upper wedge-shaped top pieces 202 through inclined surfaces, an adjusting member b204 for adjusting the relative positions of the upper wedge-shaped top pieces 202 in the front-back direction on the upper top plate 201, and a guiding member b205 for guiding the upper forming pieces 203 to move only in the vertical direction; the adjusting member b204 includes a first end block b2041 formed in the front-back direction of the upper top plate 201, and a plurality of adjusting bolts b2042 screwed on the first end block b2041. Two adjusting bolts b2042 are distributed on both sides of the upper wedge-shaped top piece 202 as a group; the guiding member b205 includes second end blocks b2051 formed on the left and right sides of the upper top plate 201 and a guiding rod b2052 horizontally spanned between the second end blocks b2051. A long waist hole b2031 matching the guiding rod b2052 is machined on the upper forming piece 203.

[0026] The upper and lower forming surfaces of a conventional stamping die are non-adjustable. This solution can complete the profiling of the blade with a set of forming tooling, effectively controlling the die cost. At the same time, it also avoids the problem of inconsistent blades in manual profiling. By reasonably compensating the springback amount, the efficiency of blade profiling is greatly improved.

[0027] When specifically used, for the convenience of understanding the present invention, it is described in conjunction with the accompanying drawings;

[0028] The structures of the upper die part and the lower die part are the same. The lower die part adjusts the height position of the lower forming piece 103 through the adjusting bolt a1042. The upper surfaces of the plurality of lower forming pieces 103 form the lower surface profile of the blade 30. The upper die part adjusts the height position of the upper forming piece 203 through the adjusting bolt b2042. The lower surfaces of the plurality of upper forming pieces 203 form the upper surface profile of the blade 30.

[0029] During operation, according to the shape of the preformed blade 30, the adjusting bolts a1042 and b2042 are used to make the forming surfaces of the lower forming piece 103 and the upper forming piece 203 coincide with the upper and lower surfaces of the preformed blade 30. The extrusion of the upper die part relative to the lower die part can realize the preliminary forming of the plate. When inspecting the preliminarily formed plate, there must be a certain amount of springback. When the amount of springback is large, the screwing depths of the adjusting bolts a1042 and b2042 are adjusted according to needs to compensate for the springback of the blade;

[0030] After the adjustment is completed, the height consistency of the subsequently stamped plates can be guaranteed, and the plates after stamping and springback are the blades 30 of the required shape.

[0031] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A rapid prototyping tool for airfoil blades capable of compensating for springback, characterized in that: It comprises a lower die part (10) and an upper die part (20) which moves relative to the lower die part (10) to realize plate forming; The lower mold part (10) comprises a lower bottom plate (101), a plurality of lower wedge-shaped top sheets (102) arranged in parallel along the front-to-back direction of the lower bottom plate (101), a plurality of lower forming sheets (103) connected to the upper part of the lower wedge-shaped top sheets (102) by means of inclined surface sliding fit, an adjusting member a (104) for adjusting the relative position of each of the lower wedge-shaped top sheets (102) on the lower bottom plate (101) in the front-to-back direction, and a guiding member a (105) for guiding the lower forming sheets (103) so that they move only in the vertical direction; The upper mold part (20) comprises an upper top plate (201), a plurality of upper wedge-shaped top sheets (202) arranged in parallel along the front-to-back direction of the upper top plate (201), a plurality of upper forming sheets (203) connected to the lower part of the upper wedge-shaped top sheets (202) by means of inclined sliding fit, an adjusting member b (204) for adjusting the relative position of each of the upper wedge-shaped top sheets (202) on the upper top plate (201) in the front-to-back direction, and a guiding member b (205) for guiding the upper forming sheets (203) so that they move only in the vertical direction.

2. The rapid prototyping tool for airfoil blade pressing capable of compensating for springback according to claim 1, characterized in that: The adjusting member a (104) comprises a first end block a (1041) formed in the front-rear direction of the lower base plate (101), and a plurality of adjusting bolts a (1042) screwed on the first end block a (1041), wherein two adjusting bolts a (1042) are arranged as a group and distributed on both sides of the lower wedge-shaped top plate (102).

3. The rapid prototyping tool for airfoil blade pressing capable of compensating for springback according to claim 2, characterized in that: The guide member a (105) comprises a second end block a (1051) formed on the left and right sides of the lower base plate (101) and a guide rod a (1052) transversely arranged between the second end blocks a (1051), and a long waist hole a (1031) matching the guide rod a (1052) is processed on the lower forming sheet (103).

4. The rapid prototyping tool for airfoil blade pressing capable of compensating for springback according to claim 1, characterized in that: The adjusting member b (204) comprises a first end block b (2041) formed in the front-rear direction of the upper top plate (201), and a plurality of adjusting bolts b (2042) screwed onto the first end block b (2041), wherein two adjusting bolts b (2042) are arranged as a group and distributed on both sides of the upper wedge-shaped top plate (202).

5. The rapid prototyping tool for airfoil blade pressing capable of compensating for springback according to claim 4, characterized in that: The guide member b (205) comprises second end blocks b (2051) formed on the left and right sides of the upper top plate (201) and a guide rod b (2052) transversely arranged between the second end blocks b (2051), and a long waist hole b (2031) matching the guide rod b (2052) is processed on the upper forming sheet (203).

Images