Titanium alloy rectifying plate hot-press forming die

Abstract

The utility model relates to a titanium alloy rectifying plate hot pressing forming die, and belongs to the technical field of dies. The mold comprises a pair of upper mold body and lower mold body, two upper convex strips, a middle groove and two edge notches are formed on the mold forming side face of the upper mold body, three convex strips and two lower grooves are formed on the mold forming side face of the lower mold body, one of the three convex strips is the middle convex strip close to the middle of the mold forming side face of the lower mold body, and the other of the three convex strips is the lower convex strip close to the middle of the mold forming side face of the lower mold body. The other two of the three raised lines are two edge raised lines which are respectively positioned on the two side edges of the die forming side surface of the lower die body, positioning pins are respectively arranged at the diagonal ends of the two edge raised lines, and a plurality of limiting stop pins are arranged on the middle raised line; when the upper die body and the lower die body are combined oppositely, the two upper protruding strips are right opposite to the two lower grooves respectively, the middle groove is right opposite to the middle protruding strip, the two edge notches are right opposite to the two edge protruding strips respectively, and the inner contours of the two lower grooves and the outer contours of the two upper protruding strips are matched with the forming shapes of the two titanium alloy rectifying plates respectively. The die can be used for forming two titanium alloy rectifying plates at the same time.

Description

Technical Field

[0001] The utility model relates to a precision hot pressing forming die for titanium alloys, belonging to the technical field of dies. Background Art

[0002] In order to reduce the weight of equipment, more and more equipment uses titanium alloys instead of traditional stainless steel or high-temperature alloys as the main material. For example, rectifiers are currently made of titanium alloys, and the shape of rectifiers is similar to U-shaped bends. However, titanium alloys have poor plasticity at room temperature, large springback, and poor forming performance. Since the rectifier directly affects the aerodynamic shape of the equipment, the dimensional accuracy requirements are high, and the shape tolerance range needs to be controlled within ±0.2. The conventional cold forming method cannot meet the deformation and dimensional accuracy of the forming.

[0003] Therefore, the hot forming method of titanium alloy came into being. The plasticity of titanium alloy will be significantly improved at high temperature. In addition, due to the stress relaxation effect at high temperature, the springback of titanium alloy is also well controlled. However, the hot forming molds of titanium alloy rectifier plates can only adapt to rectifier plates of a single size, and the processing efficiency is low. Summary of the invention

[0004] The technical problem to be solved by the utility model is how to make a hot forming die of a titanium alloy rectifier plate adapt to various size requirements so as to hot form multiple rectifier plates at one time.

[0005] The utility model proposes a technical solution to solve the above technical problems: a titanium alloy rectifier plate hot pressing forming mold, comprising a pair of upper mold bodies and lower mold bodies, wherein the mold side surface of the upper mold body is formed with two upper convex strips of equal length, a middle groove and two side notches at intervals in the width direction, wherein the middle groove is close to the middle of the mold side surface of the upper mold body, the two upper convex strips are respectively located on both sides of the middle groove, and the two side notches are respectively located on both sides of the mold side surface of the upper mold body; the mold side surface of the lower mold body is formed with three convex strips and two lower grooves at intervals, and one of the three convex strips is close to the lower mold body. The middle convex strip in the middle of the molding side surface of the mold body, the two lower grooves are respectively located on both sides of the middle convex strip, and the other two of the three convex strips are two side convex strips respectively located on the two side edges of the molding side surface of the lower mold body, and the diagonal ends of the two side convex strips are respectively provided with positioning pins, and the middle convex strip is provided with a plurality of limit stop pins; when the upper mold body and the lower mold body are matched, the two upper convex strips are respectively opposite to the two lower grooves, the middle groove is opposite to the middle convex strip, and the two side notches are respectively opposite to the two side convex strips, and the inner contours of the two lower grooves and the outer contours of the two upper convex strips are respectively consistent with the forming shapes of the two titanium alloy rectifier plates.

[0006] The beneficial effect of the utility model is that since two upper convex strips and two lower grooves are provided on the upper mold body and the lower mold body, and a plurality of limit pins are provided on the middle convex strip, two titanium alloy blanks can be respectively inserted on both sides of the upper mold body and the lower mold body, and the limit pins can just limit the positions of the two titanium alloy blanks to face the two lower grooves of different shapes respectively, so that two titanium alloy rectifier plates can be formed at the same time.

[0007] Furthermore, both side edges of the upper mold body and the lower mold body are provided with lifting holes and fixing grooves.

[0008] Furthermore, after the hoisting is completed, a thermocouple is inserted into the hoisting hole.

[0009] Furthermore, when in use, two sizes of titanium alloy rectifier plate blanks are inserted from both sides of the upper mold body and the lower mold body respectively, and one side edge of each of the two blanks is blocked by both sides of the limit stop pin respectively, and the center lines of the two blanks along the length direction of the upper mold body and the lower mold body coincide with the center lines of the two lower grooves along the length direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The following is a further description of a hot pressing forming die for a titanium alloy rectifier plate of the utility model in conjunction with the accompanying drawings.

[0011] Figure 1 The present invention is a structural schematic diagram of a hot pressing forming die for a titanium alloy rectifier plate according to an embodiment.

[0012] Figure 2 The present invention is a structural schematic diagram of a hot pressing forming die for a titanium alloy rectifier plate in an embodiment when in use.

[0013] Figure 3 yes Figure 2 Top view after removing the upper mold body. DETAILED DESCRIPTION Example

[0014] A hot pressing forming die for a titanium alloy rectifier plate in this embodiment, such as Figure 1As shown, it includes a pair of upper mold bodies (forming punches) 1 and lower mold bodies (forming concave molds) 2, and the molding side surface of the upper mold body is formed with two upper convex strips 1-1, 1-2, a middle groove 1-3 and two side notches 1-4, 1-5 of equal length along the width direction, wherein the middle groove 1-3 is close to the middle part of the molding side surface of the upper mold body 1, the two upper convex strips 1-1, 1-2 are respectively located on both sides of the middle groove 1-3, and the two side notches 1-4, 1-5 are respectively located on both sides of the molding side surface of the upper mold body 1. The molding side surface of the lower mold body 2 is formed with three spaced convex strips 2-3, 2-4, 2-5 and two lower grooves 2-1, 2-2. One of the three convex strips 2-3, 2-4, 2-5 is a middle convex strip 2-3 close to the middle part of the molding side surface of the lower mold body 2. The two lower grooves 2-1, 2-2 are respectively located on both sides of the middle convex strip 2-3. The other two of the three convex strips 2-3, 2-4, 2-5 are two side convex strips 2-4, 2-5 respectively located on both sides of the molding side surface of the lower mold body 2. Positioning pins 3 are respectively provided on the diagonal ends of the two side convex strips 2-4, 2-5. The positioning pins 3 are processed according to standard axial holes with the upper mold body 1 and the lower mold body 2 to ensure accurate installation and alignment. A plurality of limit stop pins 4 are provided on the middle convex strip 2-3. In this embodiment, there are four limit stop pins 4.

[0015] When the upper mold body 1 and the lower mold body 2 are matched, the two upper convex strips 1-1 and 1-2 are respectively opposite to the two lower grooves 2-1 and 2-2, the middle groove 1-3 is opposite to the middle convex strip 2-3, the two side notches 1-4 and 1-5 are respectively opposite to the two side convex strips 2-4 and 2-5, and the inner contours of the two lower grooves 2-1 and 2-2 are respectively consistent with the forming shapes of the two titanium alloy rectifier plates; at the same time, the outer contours of the two upper convex strips 1-1 and 1-2 are consistent with the forming shapes of the two titanium alloy rectifier plates.

[0016] In this embodiment, the shape of one lower groove 2-1 is a small U-shape, and the shape of the other lower groove 2-2 is a large U-shape. Figure 2 and Figure 3 As shown, blanks (flat plates) 5 and 6 of two sizes of titanium alloy rectifier plates are inserted from both sides of the upper mold body 1 and the lower mold body 2, and one side of each of the two blanks 5 and 6 is just blocked by the two sides of the limit stop pin 4, which can play the role of positioning reference for blank material feeding. After being designed and determined in advance according to actual production needs, the center lines of the two blanks 5 and 6 along the length direction of the upper mold body 1 and the lower mold body 2 coincide with the center lines of the two lower grooves 2-1 and 2-2 along the length direction. In this way, during hot pressing, the required two sizes of titanium alloy rectifier plates can be obtained at the same time when the two upper convex strips 1-1 and 1-2 are matched with the two lower grooves 2-1 and 2-2 respectively. The length of the blank needs to meet the positioning requirements and contact with at least two limit stop pins 4. Generally, the length of the blank is less than the length of the upper mold body 1 and the lower mold body 2, and at least one end of the blank is left blank so that the blank can be separated from the mold at high temperature.

[0017] In this embodiment, for the purpose of hoisting and fixing the upper mold body 1 and the lower mold body 2, hoisting holes 7 and fixing grooves 8 are provided on both sides of the upper mold body 1 and the lower mold body 2. After the hoisting is completed, a thermocouple can be inserted into the hoisting hole 7, and the temperature of the mold can be detected during heating and forming to ensure that the mold temperature reaches the temperature required for part forming; the fixing groove is used to connect the mold with the T-slot of the worktable using a fixed pressing plate.

[0018] The present invention is not limited to the above-mentioned embodiments, and any technical solutions formed by equivalent replacement shall fall within the protection scope required by the present invention.

Claims

1. A hot pressing die for a titanium alloy rectifier plate, comprising a pair of upper die bodies and a lower die body, characterized in that The molding side surface of the upper mold body is formed with two upper convex strips, a middle groove and two side notches of equal length along the width direction, wherein the middle groove is close to the middle part of the molding side surface of the upper mold body, the two upper convex strips are respectively located on both sides of the middle groove, and the two side notches are respectively located on both side edges of the molding side surface of the upper mold body; the molding side surface of the lower mold body is formed with three convex strips and two lower grooves at intervals, one of the three convex strips is the middle convex strip close to the middle part of the molding side surface of the lower mold body, and the two lower grooves are respectively located in the middle On both sides of the convex strip, the other two of the three convex strips are two side convex strips respectively located on the two side edges of the molded side surface of the lower mold body, and positioning pins are respectively provided on the diagonal ends of the two side convex strips, and a plurality of limit stop pins are provided on the middle convex strip; when the upper mold body and the lower mold body are matched, the two upper convex strips are respectively opposite to the two lower grooves, the middle groove is opposite to the middle convex strip, the two side notches are respectively opposite to the two side convex strips, and the inner contours of the two lower grooves and the outer contours of the two upper convex strips are respectively consistent with the forming shapes of the two titanium alloy rectifier plates.

2. The mold according to claim 1, characterized in that: Both side edges of the upper mold body and the lower mold body are provided with lifting holes and fixing grooves.

3. The mold according to claim 2, characterized in that: After the hoisting is completed, a thermocouple is inserted into the hoisting hole.

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