F-shaped forging blank tooling and F-shaped forging blank manufacturing method

Abstract

The present invention relates to an F-shaped forging blank tooling and an F-shaped forging blank manufacturing method, aiming to produce a rough blank with good consistency and no defects. The F-shaped forging blank tooling includes Tooling One and Tooling Two; Tooling One is a leakage cylinder with a leakage cavity having an open top and a closed bottom, the cross-section of the leakage cavity is circular, and the central axis of the leakage cavity is inclined; Tooling Two is a die, including a die body, and a die cavity recessed downward is provided on the top surface of the die body. The die cavity includes a top area at the top and a bottom area below the top area along the vertical direction. The bottom area includes a long branch area and a short branch area arranged at intervals. There is an arc transition between the long branch area and the top area, and an arc transition between the short branch area and the top area. The present invention uses the F-shaped forging blank tooling to manufacture the F-shaped forging blank. By respectively providing Tooling One and Tooling Two for two different processes of the F-shaped forging blank, the F-shaped forging blank can be completed with fewer heating times. At the same time, the F-shaped forging blank has good shape consistency, no defects, and high forming efficiency.

Description

Technical Field

[0001] The present invention belongs to the field of forging blank production, specifically an F-shaped forging blank tooling and an F-shaped forging blank production method. Background Art

[0002] The F-shaped blank is a forging blank with a complex shape. Its structure is as Figure 1 shown, including a vertical rod portion, a long branch portion, and a short branch portion. Both the long branch portion and the short branch portion are connected to the vertical rod portion, and the long branch portion is located at the end of the vertical rod portion. The difficulty in its production lies in that the rough blank is eccentric, and there are differences in the lengths of the long branch portion and the short branch portion. The traditional preparation method relies on the experience of workers, and the shape of the rough blank cannot be guaranteed, the consistency is poor, and it is easy to get damaged; or by adding padding, the shape of the rough blank is simplified to a solid "P" shape and then the outer shape is machined by milling. Summary of the Invention

[0003] The purpose of the present invention is to solve the problem that it is difficult to produce an F-shaped rough blank by traditional methods, and to provide an F-shaped forging blank tooling and an F-shaped forging blank production method to produce a rough blank with good consistency and no defects.

[0004] The technical solution adopted by the present invention is: the F-shaped forging blank tooling includes tooling one and tooling two;

[0005] The tooling one is a leakage cylinder with a leakage cavity that has an opening at the top and is closed at the bottom. The cross-section of the leakage cavity is circular, and the central axis of the leakage cavity is inclined;

[0006] The tooling two is a die, including a die body. On the top surface of the die body, there is a downwardly concave die cavity. The die cavity includes a top area at the top and a bottom area below the top area along the vertical direction. The bottom area includes a long branch area and a short branch area arranged at intervals. There is an arc transition between the long branch area and the top area, and there is an arc transition between the short branch area and the top area.

[0007] Further, the angle between the side wall of the leakage cavity and the central axis of the leakage cavity is 3 - 11°.

[0008] Further, the top end of the leakage cavity is in a circular arc transition.

[0009] Further, the inner walls of the die cavity are gradually inclined outward from bottom to top, and the inclination angle is 1 - 5°.

[0010] Further, on the side walls on both sides of the top area of the die cavity, there are downwardly concave clamping areas.

[0011] An F-shaped forging blank production method using the F-shaped forging blank tooling,

[0012] Step 1: Place the bar stock into the leakage cavity of the tooling one, and use a flat anvil to upset it downward so that the leakage cavity is filled to obtain a rough blank with an eccentric head;

[0013] Step 2: Flatten the rough blank as a whole to obtain a transition blank with uniform thickness everywhere and a thickness equal to that of the F-shaped forging blank.

[0014] Step 3: Place the transition blank into the second tooling, and use a flat anvil to upset the transition blank as a whole to obtain the F-shaped forging blank.

[0015] Further, in Step 2, a flat anvil is used to flatten the rough blank as a whole.

[0016] The beneficial effects of the present invention are as follows: The present invention uses an F-shaped forging blank tooling to manufacture the F-shaped forging blank tooling. By respectively providing a first tooling and a second tooling for two different processes of the F-shaped forging blank, the F-shaped forging blank can be completed with fewer heating times. At the same time, the F-shaped forging blank has good shape consistency, no defects, and high forming efficiency. Description of the Drawings

[0017] Figure 1 It is the front view of the F-shaped forging blank;

[0018] Figure 2 It is the front view of the first tooling;

[0019] Figure 3 It is the front view of the second tooling;

[0020] Figure 4 It is the three-dimensional view of the second tooling;

[0021] Figure 5 It is the process diagram of the F-shaped forging blank forming.

[0022] In the figure, the first tooling 1, the leakage cavity 1A, the second tooling 2, the die body 2A, the die cavity 2B, the top area 21, the long branch area 22, the short branch area 23, the tong area 24, the rough blank 3, the rod part 3A, the head part 3B, the transition blank 4, the F-shaped forging blank 5, the vertical rod part 5A, the long branch part 5B, and the short branch part 5C. Specific Embodiments

[0023] The following further describes the present invention in conjunction with the drawings as follows:

[0024] The F-shaped forging blank tooling, as Figure 1 , Figure 3 and Figure 4 shown, includes the first tooling 1 and the second tooling 2;

[0025] The tooling one 1 is a leakage barrel with a leakage cavity 1A having an open top and a closed bottom. The cross-section of the leakage cavity 1A is circular, and the central axis of the leakage cavity 1A is inclined. The tooling two 2 is a die, including a die body 2A. A downwardly concave die cavity 2B is provided on the top surface of the die body 2A. The die cavity 2B includes a top area 21 at the top and a bottom area below the top area 21 in the vertical direction. The bottom area includes a long branch area 22 and a short branch area 23 arranged at intervals. There is an arc transition between the long branch area 22 and the top area 21, and an arc transition between the short branch area 23 and the top area 21.

[0026] In the F-shaped forging blank tooling disclosed in the present invention, through the setting of the leakage cavity 1A of the tooling one 1, it is possible to achieve the gathering of the rough blank along one side, making the head of the rough blank eccentric.

[0027] The die cavity 2B of the tooling two 2 is used to form the final F-shaped forging blank. Its top area 21 is used to form the vertical rod part of the F-shaped forging blank, the long branch area 22 is used to form the long branch part of the F-shaped forging blank, and the short branch area 23 is used to form the short branch part of the F-shaped forging blank. There is an arc transition between the long branch area 22 and the top area 21 and between the short branch area 23 and the top area 21, avoiding the stress concentration problem in the corner area.

[0028] In this F-shaped forging blank tooling, by separately providing the tooling one 1 and the tooling two 2 for two different processes of the F-shaped forging blank, it is possible to complete the F-shaped forging blank with fewer heating times. At the same time, the shape consistency of the F-shaped forging blank is good, there are no defects, and the forming efficiency is high.

[0029] To ensure that the billet after upsetting can be removed from the die normally, preferably, the angle between the side wall of the leakage cavity 1A and the central axis of the leakage cavity 1A is 3 - 11°.

[0030] To ensure that the bar stock can be normally placed into the leakage cavity 1A of the tooling one 1, the bottom diameter D of the leakage cavity 1A needs to be 3 - 5 mm larger than the diameter of the upset bar stock, so that the bar stock can be normally placed.

[0031] To avoid stress concentration in the turning area, preferably, the top end of the leakage cavity 1A is in a circular arc transition.

[0032] To ensure that the F-shaped forging blank can be smoothly removed from the die cavity 2B after die pressing, the inner walls of the die cavity 2B are gradually inclined outward from bottom to top, and the inclination angle is 1 - 5°.

[0033] To be more conducive to smooth demolding, preferably, a downwardly concave tong area 24 is provided on the side walls on both sides of the top area 21 of the die cavity 2B.

[0034] The method for manufacturing an F-shaped forging blank using the F-shaped forging blank tooling is as Figure 5 shown.

[0035] Step 1: Place the bar stock into the leakage cavity 1A of the first tooling 1, and use a flat anvil to upset it downward to fill the leakage cavity 1A, obtaining a rough blank 3 with an eccentric head. The rough blank 3 is as shown in the figure, including a rod portion 3A located in the leakage cavity 1A and a head portion 3B located outside the leakage cavity 1A. The head portion 3B of the rough blank 3 is used to form the longer long branch portion at the F-shaped top end, and the rod portion 3A is used to form the remaining part. Through the volume distribution of the F-shaped rough blank, the design of the first tooling 1 can be quickly completed, and an accurate rough blank 3 can be obtained.

[0036] Step 2: Flatten the rough blank 3 as a whole to obtain a transition blank 4 with equal thickness everywhere and a thickness equal to that of the F-shaped forging blank.

[0037] Step 3: Place the transition blank 4 into the second tooling 2, and use a flat anvil to upset the transition blank 4 as a whole to obtain an F-shaped forging blank 5. The obtained F-shaped forging blank 5 has an increased thickness. Therefore, the thickness of the inner wall of the die cavity 2B needs to be greater than the thickness of the deformed rough blank to avoid the formation of burrs from excess metal.

[0038] In Step 2, a flat anvil is used to flatten the rough blank 3 as a whole to ensure the efficiency and quality of flattening.

Claims

1. A method for manufacturing an F-shaped forging blank using an F-shaped forging blank tooling, characterized in that: The F-shaped forging blank tooling includes tooling one (1) and tooling two (2); The tooling one (1) is a leaky cylinder with a leaky cavity (1A) that has an open top and a closed bottom. The cross-section of the leaky cavity (1A) is circular, and the central axis of the leaky cavity (1A) is inclined; The tooling two (2) is a die, including a die body (2A). On the top surface of the die body (2A), there is a downwardly concave die cavity (2B). The die cavity (2B) includes a top area (21) at the top and a bottom area below the top area (21). The bottom area includes a long branch area (22) and a short branch area (23) arranged at intervals. There is an arc transition between the long branch area (22) and the top area (21), and an arc transition between the short branch area (23) and the top area (21); The method for manufacturing the F-shaped forging blank includes the following steps: Step 1: Place the bar stock into the leaky cavity (1A) of the tooling one (1), and use a flat anvil to upset it downward until the leaky cavity (1A) is filled, obtaining a rough blank (3) with an eccentric head; Step 2: Flatten the rough blank (3) as a whole to obtain a transition blank (4) with equal thickness everywhere and a thickness equal to that of the F-shaped forging blank; Step 3: Place the transition blank (4) into the tooling two (2), and use a flat anvil to upset the transition blank (4) as a whole to obtain the F-shaped forging blank (5).

2. The method for manufacturing an F-shaped forging blank using an F-shaped forging blank tooling as described in claim 1, characterized in that: The top end of the leaky cavity (1A) has an arc transition.

3. The method for manufacturing an F-shaped forging blank using an F-shaped forging blank tooling as claimed in claim 1, wherein: The inner walls of the die cavity (2B) are gradually inclined outward from bottom to top, and the inclination angle is 1 - 5°; 4. The method for manufacturing an F-shaped forging blank using an F-shaped forging blank tooling as claimed in claim 1, characterized in that: On the side walls on both sides of the top area (21) of the die cavity (2B), there are downwardly concave clamping areas (24).

5. The method for manufacturing an F-shaped forging blank using an F-shaped forging blank tooling as claimed in claim 1, 2, 3 or 4, characterized in that: In Step 2, a flat anvil is used to flatten the rough blank (3) as a whole.

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