Blind hole cylindrical forge piece forming device

Abstract

The utility model belongs to the technical field of blind hole cylindrical forge piece forming, and particularly relates to a blind hole cylindrical forge piece forming device which comprises a core die, a cover die and a drain plate, and the core die is sequentially provided with a forging and pressing part, an end face forming step and a blind hole forming core body from top to bottom; the bottom of the cover die is provided with a forming cavity in sliding fit with the end face forming step, the top of the cover die is provided with a material containing groove with the aperture larger than that of the forming cavity, and an inverted-circular-truncated-cone-shaped transition sliding hole is communicated between the material containing groove and the forming cavity. The leaking disc comprises a supporting plate, the bottom of the supporting plate is fixedly connected with a set of supporting legs, and a material leaking hole matched with the forming cavity is formed in the supporting plate in a penetrating mode. Integrated extrusion forming of the blind hole cylindrical forge piece is achieved, the thickness of the cylinder wall is even, the bearing pressure and strength of the forge piece are guaranteed, and meanwhile the appearance is very attractive. In addition, the forge piece forming forging allowance is small, the forming efficiency is high, the requirement for batch production can be met, and economy and practicability are achieved.

Description

Technical Field

[0001] The utility model relates to a blind hole barrel forging forming device, belonging to the blind hole barrel forging forming technical field. Background Art

[0002] Blind hole barrel forging products are characterized by non-through inner holes, which is an important problem for the manufacturing of forging products. At present, there are two main forging methods at home and abroad: the first is to adopt a split forging mode, and after forging, it is welded and formed. Although this forging method can meet the general workpiece needs, for some workpiece products with higher precision, this split forging method is difficult to guarantee the quality, and its bearing pressure and strength cannot meet the requirements; the second is to first forge the forging blank into a disc-type solid forging, and then use a punch to punch from the center. After punching to the process depth, forge and roll the outer circle to the size of the forging. At the same time, the inner hole is slightly enlarged, and the punch is immediately removed. The forging products formed by this forging process have large forging allowances, low efficiency, uneven thickness of the barrel wall, and unsightly appearance. Utility Model Content

[0003] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a blind hole cylindrical forging forming device with good forging quality, small forging allowance and high forming efficiency.

[0004] The blind hole cylindrical forging forming device described in the utility model comprises a core die, a sleeve die and a leakage disk, wherein the core die is provided with a forging portion, an end face forming step and a blind hole forming core body in sequence from top to bottom; the bottom of the sleeve die is provided with a forming cavity slidably matched with the end face forming step, the top of the sleeve die is provided with a feeding groove with an aperture larger than the aperture of the forming cavity, and an inverted truncated cone-shaped transition sliding hole is connected between the feeding groove and the forming cavity; the leakage disk comprises a support plate, the bottom of the support plate is fixedly connected with a group of support legs, and the support plate is penetrated with a leakage hole matched with the forming cavity.

[0005] Furthermore, the blind hole forming core is in the shape of an inverted truncated cone, which facilitates the demoulding of the core mold after the forging is formed.

[0006] Furthermore, the material placing trough is in the shape of an inverted truncated cone, which is convenient for placing the disc blank; the inclination angle of the generatrix of the material placing trough is greater than the inclination angle of the generatrix of the transition slide hole, so that the boundary line size between the material placing trough and the transition slide hole coincides with the outer diameter size of the prefabricated disc blank, thereby ensuring the accuracy of the position of the disc blank when it is placed in the sleeve mold.

[0007] Furthermore, the bottom of the blind hole forming core is provided with a forming rounded corner, which can provide transition buffering for the disc blank when the blind hole of the forging is formed, so that the formed blind hole is smoother, which is beneficial to improving the forming quality of the blind hole.

[0008] Furthermore, a transition chamfer is provided between the transition sliding hole and the forming cavity, so as to facilitate the smooth flow of the disc blank into the forming cavity.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] The blind hole cylindrical forging forming device described in the utility model breaks through the traditional forging forming process, realizes the one-piece extrusion forming of the blind hole cylindrical forging, makes the thickness of the cylinder wall uniform, not only ensures the bearing pressure and strength of the forging, but also has a very beautiful appearance; in addition, the forging forming forging margin is small and the forming efficiency is high, which can meet the needs of mass production and is economical and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a cross-sectional structural schematic diagram of the utility model;

[0012] Figure 2 It is a structural schematic diagram of the core mold of the utility model;

[0013] Figure 3 It is a cross-sectional structural schematic diagram of the sleeve mold of the utility model;

[0014] Figure 4 It is a schematic cross-sectional structure diagram of the leakage disc of the utility model;

[0015] Figure 5 It is a schematic diagram of the cross-sectional structure of the utility model before molding;

[0016] Figure 6 It is a schematic diagram of the cross-sectional structure of the utility model after molding;

[0017] Figure 7 It is a schematic diagram of the cross-sectional structure of the utility model during unloading.

[0018] In the figure: 1. leakage disc; 2. core mold; 3. sleeve mold; 4. blind hole forming core; 5. forming chamfer; 6. end face forming step; 7. forging part; 8. forming cavity; 9. transition chamfer; 10. transition slide hole; 11. material trough; 12. support leg; 13. support plate; 14. leakage hole; 15. lower anvil; 16. disc blank; 17. upper anvil; 18. forming forging; 19. process punch. DETAILED DESCRIPTION

[0019] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0020] Embodiment 1:

[0021] like Figures 1 to 4As shown, the blind hole cylindrical forging forming device described in the utility model includes a core die 2, a sleeve die 3 and a leakage plate 1, and the core die 2 is provided with a forging portion 7, an end face forming step 6 and a blind hole forming core 4 from top to bottom; the bottom of the sleeve die 3 is provided with a forming cavity 8 slidably matched with the end face forming step 6, and the top of the sleeve die 3 is provided with a feeding groove 11 with an aperture larger than the aperture of the forming cavity 8, and an inverted truncated cone-shaped transition slide hole 10 is connected between the feeding groove 11 and the forming cavity 8; the leakage plate 1 includes a support plate 13, and a group of support legs 12 are fixedly connected to the bottom of the support plate 13, and a leakage hole 14 matched with the forming cavity 8 is penetrated through the support plate 13.

[0022] When in use, the sleeve die 3 is placed on the lower anvil 15, and then the repeatedly forged disc blank 16 is placed in the material placement groove 11 on the sleeve die 3, and then the center of the disc blank 16 is found, and the blind hole forming core 4 of the core die 2 is placed at the center position of the disc blank 16 (such as Figure 5 As shown), the upper anvil 17 is then controlled to move downward to contact the upper end surface of the forging portion 7 of the core die 2, and then the upper anvil 17 continues to move downward, and the core die 2 is then pressed against the disc blank 16 to continuously deform, and then slides along the transition slide hole 10 in the sleeve die 3, gradually entering the forming cavity 8, until the disc blank 16 fits with the lower anvil 15, completing the initial forming of the forging, and then the upper anvil 17 continues to press downward until the process size height required for the forging is reached. At this time, the end surface forming step 6 of the core die 2, the blind hole forming core 4, the forming cavity 8 and the lower anvil 15 form a closed die cavity, thereby closing and compacting the disc blank 16 into a formed forging 18 (as shown in FIG. Figure 6 As shown), the upper anvil 17 is then controlled to move upward, and the leaking plate 1 is placed at the lower end of the sleeve die 3, so that the leaking hole 14 of the leaking plate 1 corresponds to the forming cavity 8, and then the process punch 19 is placed at the upper end of the core die 2, and then the upper anvil 17 is controlled to press downward again, so that the formed forging 18 can be pressed out from the leaking hole 14, and the unloading of the formed forging 18 is completed (as shown). Figure 7 shown).

[0023] The blind hole cylindrical forging forming device described in the utility model breaks through the traditional forging forming process, realizes the one-piece extrusion forming of the blind hole cylindrical forging, makes the thickness of the cylinder wall uniform, not only ensures the bearing pressure and strength of the forging, but also has a very beautiful appearance; in addition, the forging forming forging margin is small and the forming efficiency is high, which can meet the needs of mass production and is economical and practical.

[0024] Embodiment 2:

[0025] like Figures 1 to 7 As shown, based on Example 1,

[0026] Furthermore, the blind hole forming core body 4 is in the shape of an inverted truncated cone, which facilitates the demoulding of the core mold 2 after the forging is formed;

[0027] Furthermore, the material placing groove 11 is in an inverted truncated cone shape, which is convenient for placing the disc blank 16; the inclination angle of the generatrix of the material placing groove 11 is greater than the inclination angle of the generatrix of the transition slide hole 10, so that the boundary line size of the material placing groove 11 and the transition slide hole 10 is consistent with the outer diameter size of the prefabricated disc blank 16, thereby ensuring the accuracy of the position of the disc blank 16 when it is placed in the sleeve mold 3;

[0028] Furthermore, the bottom of the blind hole forming core 4 is provided with a forming rounded corner 5, which can provide transition buffering for the disc blank 16 when the blind hole of the forging is formed, so that the formed blind hole is smoother, which is beneficial to improving the forming quality of the blind hole;

[0029] Furthermore, a transition chamfer 9 is provided between the transition sliding hole 10 and the forming cavity 8 to facilitate the disk blank 16 to flow smoothly into the forming cavity 8 .

Claims

1. A blind hole barrel forging forming device, characterized in that: The invention comprises a core die (2), a sleeve die (3) and a leakage plate (1), wherein the core die (2) is provided with a forging portion (7), an end face forming step (6) and a blind hole forming core (4) in sequence from top to bottom; the bottom of the sleeve die (3) is provided with a forming cavity (8) which is slidably matched with the end face forming step (6); the top of the sleeve die (3) is provided with a material placement groove (11) whose aperture is larger than that of the forming cavity (8); an inverted truncated cone-shaped transition sliding hole (10) is connected between the material placement groove (11) and the forming cavity (8); the leakage plate (1) comprises a support plate (13), the bottom of the support plate (13) is fixedly connected with a group of support legs (12), and the support plate (13) is penetrated with a leakage hole (14) which is matched with the forming cavity (8).

2. The blind hole barrel forging forming device according to claim 1, characterized in that: The blind hole forming core (4) is in the shape of an inverted truncated cone.

3. The blind hole barrel forging forming device according to claim 1, characterized in that: The material placement groove (11) is in the shape of an inverted truncated cone, and the inclination angle of the generatrix of the material placement groove (11) is greater than the inclination angle of the generatrix of the transition sliding hole (10).

4. The blind hole barrel forging forming device according to any one of claims 1 to 3, characterized in that: The bottom of the blind hole forming core (4) is provided with a forming rounded corner (5).

5. The blind hole barrel forging forming device according to claim 4, characterized in that: A transition chamfer (9) is provided between the transition sliding hole (10) and the forming cavity (8).

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