Flywheel shell punching die

Abstract

The utility model relates to the technical field of shell machining, and discloses a flywheel shell punching die which comprises a punching die and a stable structure located in the punching die, the punching die comprises a vertical plate, an annular die ring is arranged on the plate face of one side of the vertical plate, a positioning punched hole is formed in the top of the annular die ring, and the stable structure is located in the positioning punched hole. Stable structures are arranged on the two sides of the positioning punched hole and comprise containing grooves formed in the outer surface of the annular die ring, gears are arranged in the containing grooves, rotating shafts are arranged at one ends of the gears, penetrate through the annular die ring and the vertical plate and are exposed out of the outer side face of the vertical plate, and a first pressing layer and a second pressing layer are sequentially arranged above the gears from bottom to top; the second pressing layer is a rubber layer, one side of the gear is meshed with a rack, and the rack is fixedly connected with the first pressing layer; through the arrangement of the stabilizing structure, the flywheel shell can be pressed and fixed, the flywheel shell is prevented from rotating under the influence of external force in the punching process, and therefore the accuracy of the punching position and the regularity of an opening are guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of punching dies, and in particular relates to a flywheel housing punching die. Background Art

[0002] The flywheel housing is a crucial engine component, connecting the engine and transmission, bearing some of the weight of the engine and transmission, and protecting the flywheel. The flywheel housing is equipped with threaded holes for connection and fixing, as well as heat dissipation holes. Therefore, punching is a crucial step in the flywheel housing manufacturing process. Existing punching processes typically utilize a top-down forward punching method to create corresponding through-holes on the workpiece surface. Punching the sidewalls of the flywheel housing, in particular, requires the use of a punching die.

[0003] Patent CN216540440U discloses a hardware stamping device that is convenient for fixing hardware parts. It includes a stamping die and a rotating mechanism that rotates and clamps the workpiece. The stamping die includes a vertical plate, an annular die ring fixed to the rear side of the vertical plate and movably sleeved on the inner side of the annular ring, and positioning punching holes provided on the annular die ring. Its advantage is that by adjusting different punching positions to align the positioning punching holes and the punch, precise punching operations can be achieved. However, it also has the following disadvantages: the workpiece is sleeved on the periphery of the annular die ring, and there is no stable structure between the two. Therefore, during the punching process, large impact forces will cause relative rotation between the workpiece and the annular die ring, which not only affects the accuracy of the punching position, but also causes deformation of the hole opening, affecting subsequent normal use. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a flywheel housing punching die to solve the technical problem of the lack of a stable structure between the workpiece and the annular die ring in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0006] A flywheel housing punching die comprises a punching die and a stabilizing structure located inside the punching die, the punching die comprises a vertical plate, an annular die ring is provided on a plate surface on one side of the vertical plate, a positioning punching hole is provided on the top of the annular die ring, and stabilizing structures are provided on both sides of the positioning punching hole, the stabilizing structure comprises a receiving groove provided on the outer surface of the annular die ring, a gear is provided in the receiving groove, a rotating shaft is provided at one end of the gear, the rotating shaft passes through the annular die ring and the vertical plate and is exposed on the outer side surface of the vertical plate, a first pressing layer and a second pressing layer are provided above the gear from bottom to top, the second pressing layer is a rubber layer, a rack is meshed with a gear on one side of the gear, the rack is fixedly connected to the first pressing layer, a turntable is provided at the outer end of the rotating shaft, corresponding limiting holes are provided on the turntable and the vertical plate, an insert rod passes through the turntable along the limiting hole and extends into the vertical plate;

[0007] Furthermore, a limiting groove is provided on the side wall of the accommodating groove away from the vertical plate, and a limiting shaft adapted to the limiting groove is provided on the end of the rotating shaft away from the vertical plate. The limiting shaft is rotatably connected to the limiting groove to provide support and limiting function for the gear;

[0008] Furthermore, the cross-sectional dimensions of the first compression layer and the second compression layer are consistent with the cross-sectional dimensions of the accommodating groove, wherein the thickness of the first compression layer is greater than the thickness of the second compression layer, and the top surface of the second compression layer is a curved surface and coincides with the outer surface of the annular mold ring;

[0009] Furthermore, a sliding groove is provided around the receiving groove, and a sliding protrusion adapted to the sliding groove is integrally formed on the side surface of the first compression layer;

[0010] Furthermore, a discharge structure is provided in the punching die, and the discharge structure includes a discharge hole opened on the vertical plate, and the discharge hole gradually tilts downward from the inside to the outside. An inclined plate is provided on the inner side of the discharge hole, and the inclination angle of the inclined plate is consistent with that of the discharge hole. The upper surface of the inclined plate coincides with the bottom surface of the discharge hole, and the inclined plate is directly below the positioning punching hole; a recycling box with an upper opening is provided on the outer side of the discharge hole, and the recycling box is located below the discharge hole.

[0011] The beneficial effects of the present invention are:

[0012] (1) Compared with the existing technology, the flywheel housing can be pressed and fixed by setting a stable structure, preventing the flywheel housing from rotating due to external forces during the punching process, thereby ensuring the accuracy of the punching position and the regularity of the opening;

[0013] (2) The discharge structure is used to recycle the waste formed by punching and cutting in time to prevent the waste from accumulating in the annular die ring and falling randomly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention is described with the following drawings:

[0015] Figure 1 This is a schematic diagram of the overall structure of the flywheel housing punching die in Example 1 of the present utility model;

[0016] Figure 2 This is a cross-sectional view of the stabilizing structure in Example 1 of the present utility model;

[0017] Figure 3 for Figure 2 A magnified view of point A1 in the middle;

[0018] Figure 4 This is a schematic diagram of the back of the flywheel housing punching die in Example 1 of the present utility model;

[0019] Figure 5 for Figure 4 A magnified view of A3 in the middle;

[0020] Figure 6 for Figure 3 Enlarged view of point A2 in the middle.

[0021] The following are marked in the accompanying drawings:

[0022] Punching mold 1, vertical plate 11, annular mold ring 12, positioning punching hole 13, stabilizing structure 2, accommodating groove 201, gear 202, rotating shaft 203, turntable 204, limiting shaft 205, limiting groove 206, rack 207, first clamping layer 208, second clamping layer 209, limiting hole 210, insertion rod 211, slide groove 212, sliding protrusion 213, base 3, discharge structure 4, discharge hole 41, inclined plate 42, recovery box 43. DETAILED DESCRIPTION

[0023] Example 1, specifically as Figures 1-6 shown.

[0024] like Figure 1 As shown, a flywheel housing punching die comprises a punching die 1 and a stabilizing structure 2 located within the punching die 1. The punching die 1 comprises a vertically arranged upright plate 11, an annular die ring 12 welded to one side of the upright plate 11, a base 3 provided at the bottom end of the upright plate 11, and the two secured together by a threaded connection. The flywheel housing is sleeved around the outer periphery of the annular die ring 12, the inner side of the flywheel housing being in contact with the outer side of the annular die ring 12, and the two are capable of relative rotation.

[0025] A positioning hole 13 is formed at the top of the annular die ring 12. The punch of the punching machine punches the side wall of the flywheel housing from top to bottom, and the punch falls into the positioning hole 13. Stabilizing structures 2 are provided on both sides of the positioning hole 13. In this embodiment, there are two stabilizing structures 2, which are symmetrically distributed around the positioning hole 13 as the axis of symmetry.

[0026] The stabilizing structure 2 comprises a receiving groove 201 formed on the outer surface of the annular mold ring 12 and extending along the height of the annular mold ring 12. The receiving groove 201 is generally rectangular and its length is less than the height of the annular mold ring 12. A gear 202 is housed within the receiving groove 201, extending in the same direction as the receiving groove 201. A rotating shaft 203 is welded to the center of one end of the gear 202, facing the vertical plate 11. The rotating shaft 203 passes through the annular mold ring 12 and the vertical plate 11 and protrudes a certain height above the outer surface of the vertical plate 11. A cylindrical retaining groove 206 is formed on the sidewall of the receiving groove 201 facing away from the vertical plate 11. A retaining shaft 205, which mates with the retaining groove 206, is welded to the center of the end of the rotating shaft 203 facing away from the vertical plate 11. The rotational connection between the retaining shaft 205 and the retaining groove 206 provides support and a retaining function for the gear 202.

[0027] Above the gear 202, a first compression layer 208 and a second compression layer 209 are sequentially arranged from bottom to top. The cross-sectional dimensions of the first and second compression layers 208, 209 are consistent with those of the accommodating groove 201. The thickness of the first compression layer 208 is greater than that of the second compression layer 209. The top surface of the second compression layer 209 is an arcuate surface that coincides with the outer surface of the annular die ring 12. It is worth noting that in this embodiment, the first compression layer 208 is made of a hard material (e.g., steel plate), and the second compression layer 209 is a rubber layer.

[0028] A rack 207 is provided on one side of the gear 202 . The top of the rack 207 is welded to the bottom surface of the first compression layer 208 to fix the rack 207 . The rack 207 is meshed with the gear 202 .

[0029] A circular turntable 204 is welded to the outer end of the rotating shaft 203, and corresponding limiting holes 210 are opened on the outer plate surface of the turntable 204 and the vertical plate 11. The insertion rod 211 passes through the turntable 204 along the limiting hole 210 and extends into the vertical plate 11, thereby limiting the relative rotation of the turntable 204 and the vertical plate 11.

[0030] When in use, first, the flywheel shell is placed on the annular die ring 12, and the top surface of the second compression layer 209 coincides with the outer side surface of the annular die ring 12; then, the turntable 204 is rotated, and the gear 202 rotates synchronously with the turntable 204. The rotation of the gear 202 drives the rack 207, the first compression layer 208 and the second compression layer 209 to move upward synchronously, and the top surface of the second compression layer 209 is pressed against the inner side surface of the flywheel shell. At this time, the limiting hole 210 on the turntable is aligned with the limiting hole 210 on the outer plate surface of the vertical plate 11; finally, the insert is inserted into the limiting hole 210 along the limiting hole 210 to fix the turntable 204, thereby applying a continuous compression force to the flywheel shell. By setting the stabilizing structure 2, the flywheel shell can be compressed and fixed, preventing the flywheel shell from rotating due to external forces during the punching process, thereby ensuring the accuracy of the punching position and the regularity of the opening.

[0031] Slide grooves 212 are provided around the accommodating groove 201, and sliding protrusions 213 adapted to the slide grooves 212 are integrally formed on the side of the first compression layer 208. Through the cooperation of the slide grooves 212 and the sliding protrusions 213, the first compression layer 208 and the second compression layer 209 will not be skewed or deformed during the sliding process, thereby effectively improving the sliding stability.

[0032] In addition, a discharge structure 4 is provided in the punching mold 1, and the discharge structure 4 includes a discharge hole 41 opened on the vertical plate 11. The discharge hole 41 gradually tilts downward from the inside to the outside, and an inclined plate 42 is provided on the inner side of the discharge hole 41. The inclined plate 42 has the same inclination angle as the discharge hole 41, and the upper surface of the inclined plate 42 coincides with the bottom surface of the discharge hole 41. The inclined plate 42 is directly below the positioning punching hole 13, and the side surface of the inclined plate 42 is fixedly connected to the inner side surface of the vertical plate 11 by welding; a recovery box 43 with an upper opening is provided on the outer side of the discharge hole 41, and the recovery box 43 is located below the discharge hole 41, and the inner side surface of the recovery box 43 is welded and fixed to the vertical plate 11.

[0033] During use, the waste formed by punching falls onto the inclined plate 42, and then slides along the inclined plate 42 through the discharge hole 41 into the recycling box 43. The discharge structure 4 is used to recycle the waste formed by punching in time to prevent the waste from accumulating in the annular die ring 12 and falling at will.

[0034] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A flywheel housing punching die, characterized in that: The invention comprises a punching die and a stabilizing structure located inside the punching die, wherein the punching die comprises a vertical plate, an annular die ring is provided on the plate surface on one side of the vertical plate, a positioning hole is provided on the top of the annular die ring, and a stabilizing structure is provided on both sides of the positioning hole, and the stabilizing structure comprises a receiving groove provided on the outer surface of the annular die ring, a gear is provided in the receiving groove, a rotating shaft is provided at one end of the gear, the rotating shaft passes through the annular die ring and the vertical plate and is exposed on the outer side surface of the vertical plate, a first clamping layer and a second clamping layer are provided above the gear from bottom to top, and the second clamping layer is a rubber layer, a rack is meshed with a gear on one side of the gear, and the rack is fixedly connected to the first clamping layer, a turntable is provided at the outer end of the rotating shaft, and corresponding limiting holes are provided on the turntable and the vertical plate, and the insertion rod passes through the turntable along the limiting hole and extends into the vertical plate.

2. The flywheel housing punching die according to claim 1, characterized in that: A limiting groove is provided on the side wall of the accommodating groove away from the vertical plate, and a limiting shaft adapted to the limiting groove is provided at the end of the rotating shaft away from the vertical plate. The limiting shaft is rotatably connected to the limiting groove to provide support and limiting effect for the gear.

3. The flywheel housing punching die according to claim 2, characterized in that: The cross-sectional dimensions of the first and second compression layers are consistent with those of the accommodating groove, wherein the thickness of the first compression layer is greater than that of the second compression layer, and the top surface of the second compression layer is an arc surface and coincides with the outer surface of the annular mold ring.

4. The flywheel housing punching die according to claim 3, characterized in that: Slide grooves are provided around the accommodating groove, and a sliding protrusion adapted to the slide grooves is integrally formed on the side surface of the first compression layer.

5. The flywheel housing punching die according to claim 4, characterized in that: A discharge structure is provided in the punching die, which includes a discharge hole opened on the vertical plate. The discharge hole is gradually inclined downward from the inside to the outside. An inclined plate is provided on the inner side of the discharge hole. The inclined plate has the same inclination angle as the discharge hole. The upper surface of the inclined plate coincides with the bottom surface of the discharge hole. The inclined plate is located directly below the positioning punching hole; a recovery box with an upper opening is provided on the outer side of the discharge hole, and the recovery box is located below the discharge hole.

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