Novel punch
By designing a new type of punch with guide holes and a gradient structure, the wear problem caused by punch offset was solved, thereby extending the service life of the punch and die and reducing wear.
Patent Information
- Application Number
- CN202520587902.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-31
AI Technical Summary
In existing forging technology, the punch is prone to shifting during repeated stamping, resulting in a tight fit with the die, increased wear, and reduced service life.
A novel punch is designed, comprising a main body, a first forming part, and a second forming part. The top of the main body is recessed to form a guide hole. The first forming part and the second forming part are smoothly connected in sequence along the vertical direction, and a gradient structure with different diameters is provided to prevent the punch from shifting and reduce wear.
The guide hole works in conjunction with the punch rod to prevent punch deviation, reduce wear, extend the service life of the punch and die, and reduce the friction and force of the overall system.
Smart Images
Figure CN223916545U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a forging collar technical field, specifically, a novel punch. BACKGROUND
[0002] Forging technology is that metal blank is heated to a certain high temperature, and the metal blank is subjected to pressure by a punch to produce plastic deformation to obtain a forging with certain mechanical properties, shape and size, the punch will naturally deviate to the side with good plasticity of the metal blank during repeated stamping process, but the single deviation is relatively small, and the large deviation is caused by long-term work accumulation, and after the punch deviates, the fit with the inner side of the die will be more close, the wear will be more serious, and the service life of the punch and the die will be reduced, therefore, how to improve the service life of the punch and the die is one of the problems to be solved in the current multi-directional forging. SUMMARY
[0003] The utility model discloses a novel punch to solve the problems in the background art, and the technical scheme of the utility model provides a solution significantly different from the prior art.
[0004] In the first aspect, the utility model provides a novel punch, which comprises a main body part, a first forming part and a second forming part, the first forming part is arranged below the main body part, the second forming part is arranged below the first forming part, the main body part, the first forming part and the second forming part are connected in sequence along the vertical direction, the top end of the main body part is recessed to form a guide hole, and the radius of the second forming part gradually decreases from top to bottom along the central axis.
[0005] The maximum diameter of the first forming part is greater than the maximum diameter of the main body part, and the maximum diameter of the first forming part is greater than the maximum diameter of the second forming part.
[0006] In some embodiments, the inner diameter of the guide hole gradually decreases from top to bottom along the central axis.
[0007] In some embodiments, the ratio of the minimum inner diameter of the guide hole to the depth of the guide hole is 2-3.5, the ratio of the depth of the guide hole to the total height of the main body part is 0.4-0.8, the ratio of the minimum inner diameter of the guide hole to the maximum diameter of the main body part is 0.25-0.65, and the lower edge and the upper edge of the guide hole are arranged in a circular arc.
[0008] In some embodiments, the ratio of the maximum diameter of the first forming part to the maximum diameter of the main body part is 1.02-1.15.
[0009] In some embodiments, the ratio of the total height of the main body to the total height of the first molding part is 0.4 to 0.9, and the ratio of the total height of the first molding part to the total height of the second molding part is 2 to 4.
[0010] In some embodiments, the first forming portion is configured as an arc surface, a conical surface, or a combination of an arc surface and a conical surface, wherein the arc surface is configured as an arc surface that convexes outward in the radial direction of the main body portion.
[0011] In some embodiments, the radius of the first molding portion along the central axis from top to bottom tends to first increase and then decrease.
[0012] In some embodiments, the second forming portion is configured as an arc surface or a conical surface, wherein the arc surface is configured as an arc surface that convexes outward in the radial direction of the main body portion.
[0013] Compared with the prior art, the beneficial effects of the present invention are:
[0014] The present invention utilizes a guide hole formed by the recess at the top of the main body, allowing the new punch to cooperate with the punch rod through the guide hole. This prevents the new punch from shifting during use, thereby reducing the likelihood of increased wear due to the tighter fit between the punch and the inner side of the mold after shifting.
[0015] By utilizing the technical solution of this utility model, the maximum diameter of the first forming part is greater than the maximum diameter of the main body, and the maximum diameter of the first forming part is greater than the maximum diameter of the second forming part, thereby forming a gap between the hole wall formed by the new punch during the extrusion of the blank and the outer wall of the punch rod. This reduces wear caused by contact between the punch rod and the formed hole wall, and further reduces the force applied to the punch rod. Attached Figure Description
[0016] Figure 1 A schematic diagram of a novel punch is shown.
[0017] Figure 2 It shows Figure 1 A schematic diagram of the structure of the first embodiment of the dashed circle A shown in the figure;
[0018] Figure 3 It shows Figure 1 The diagram shows a schematic representation of the second embodiment of the dashed coil A.
[0019] Reference numerals: 01-New type punch; 11-Main body; 111-Guide hole; 12-First forming part; 13-Second forming part. Detailed Implementation
[0020] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, and are not intended to imply any limitation on the scope of the disclosure.
[0021] As used herein, the term "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "at least partially based on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation or being constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientations or positional relationships; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. In addition, the terms "installed", "set up", "equipped with", "connected", and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are mainly used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.
[0022] This embodiment discloses a novel punch 01, such as Figure 1 , Figure 2 and Figure 3As shown, the novel punch 01 includes a main body 11, a first forming part 12, and a second forming part 13. The first forming part 12 is disposed below the main body 11, and the second forming part 13 is disposed below the first forming part 12. The main body 11, the first forming part 12, and the second forming part 13 are smoothly connected in sequence along the vertical direction. The top end of the main body 11 is recessed to form a guide hole 111, and the radius of the second forming part 13 gradually decreases from top to bottom along the central axis.
[0023] The maximum diameter of the first molding part 12 is greater than the maximum diameter of the main body part 11, and the maximum diameter of the first molding part 12 is greater than the maximum diameter of the second molding part 13.
[0024] In this embodiment, a novel punch 01 is provided. The punch 01 has a main body 11, a first forming part 12, and a second forming part 13 arranged vertically. The main body 11 and the first forming part 12, and the first forming part 12 and the second forming part 13, are smoothly connected sequentially along the vertical direction. This reduces stress concentration at these points, thus reducing the force on the novel punch 01 during extrusion punching and reducing the likelihood of cracks forming at these connections, thereby improving the overall structural strength. Furthermore, the top of the main body 11 has a recessed guide hole 111, allowing the novel punch 01 to cooperate with the punch rod. This prevents the novel punch 01 from shifting during use, reducing the risk of increased wear due to a tighter fit between the punch 01 and the mold interior after shifting. In this application, the central axis of the guide hole 111 is aligned with the central axis of the novel punch 01, so that the force applied to the novel punch 01 by the punch rod through the guide hole 111 is evenly applied to the novel punch 01. This allows the novel punch 01 to more stably extrude the blank vertically downward through the force, and further prevents the novel punch 01 from deviating during the extrusion process.
[0025] Specifically, since the maximum diameter of the first forming part 12 is greater than the maximum diameter of the main body 11, and the maximum diameter of the first forming part 12 is greater than the maximum diameter of the second forming part 13, a gap is formed between the hole wall formed by the novel punch 01 during the extrusion of the blank and the outer wall of the punch rod. This reduces wear caused by contact between the punch rod and the formed hole wall, and further reduces the force applied to the punch rod, i.e., the forming force of the entire system. The gap between the formed hole wall and the outer wall of the punch rod reduces friction, thus reducing the overall force while still allowing for the extrusion of the formed hole.
[0026] In some embodiments, the inner diameter of the guide hole 111 gradually decreases from top to bottom along the central axis. In this embodiment, through the above design, a guide slope can be formed on the guide hole 111 and the hole wall, so that the force applied to the guide hole 111 by the punch during the extrusion process is evenly distributed and concentrated on the new punch 01, so that the new punch 01 can more easily act on the blank to extrude and form a hole.
[0027] In some embodiments, the ratio of the minimum inner diameter of the guide hole 111 to the depth of the guide hole 111 is 2 to 3.5, the ratio of the depth of the guide hole 111 to the total height of the main body 11 is 0.4 to 0.8, the ratio of the minimum inner diameter of the guide hole 111 to the maximum diameter of the main body 11 is 0.25 to 0.65, and the lower and upper edges of the guide hole 111 are both arranged in an arc. In this embodiment, through the above-mentioned arrangement, a more reasonable distribution can be formed between the main body 11 of the novel punch 01 and the guide hole 111, thereby not affecting the overall structural strength of the punch 01.
[0028] In some embodiments, the ratio of the total height of the main body 11 to the total height of the first molding part 12 is 0.4 to 0.9, the ratio of the total height of the first molding part 12 to the total height of the second molding part 13 is 2 to 4, and the ratio of the maximum diameter of the first molding part 12 to the maximum diameter of the main body 11 is 1.02 to 1.15.
[0029] Furthermore, the first forming part 12 is configured as an arc surface, a conical surface, or a combination of an arc surface and a conical surface, wherein the arc surface is configured as an arc surface that convexes outward in the radial direction of the main body part 11.
[0030] Furthermore, the radius of the first molding portion 12 along the central axis from top to bottom shows a trend of first increasing and then decreasing.
[0031] Furthermore, the second forming part 13 is configured as an arc surface or a conical surface, wherein the arc surface is configured as an arc surface that convexes outward in the radial direction of the main body part 11.
[0032] In this embodiment, as Figure 3 As shown, the first forming part 12 is configured as an arc surface, wherein the arc surface is configured as an arc surface that convexes outward in the radial direction of the main body part 11. This increases the outer diameter of the first forming part 12, thereby improving the structural strength of the novel punch 01 in the first forming part 12.
[0033] Specifically, the second forming part 13 is configured as an arc surface, wherein the arc surface is configured as an arc surface that convexes outward in the radial direction of the main body part 11. This increases the outer diameter of the second forming part 13, thereby improving the structural strength of the novel punch 01 in the second forming part 13.
[0034] In some embodiments, this application discloses a novel punch 01. The main body of the novel punch 01 has a cylindrical structure. The diameter (i.e., the maximum diameter) of the main body is 235 mm, and the total height of the main body is 51.4 mm. The maximum diameter of the first forming part is 250 mm, and the total height of the first forming part is 78.9 mm. The maximum diameter of the second forming part is 200 mm, and the total height of the second forming part is 29.7 mm. The minimum inner diameter of the guide hole is 97.6 mm, the maximum inner diameter of the guide hole is 117.6 mm, the depth of the guide hole is 35 mm, and the arc angle of the lower edge and the upper edge of the guide hole is 5 mm.
[0035] In summary, by using the above structural configuration, the maximum diameter of the first forming part is greater than the maximum diameter of the main body, and the maximum diameter of the first forming part is greater than the maximum diameter of the second forming part, thereby creating a gap between the hole wall formed by the new punch during the extrusion of the blank and the outer wall of the punch rod. This reduces wear caused by contact between the punch rod and the formed hole wall, and further reduces the force applied to the punch rod.
[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.
[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.
Claims
1. A novel punch, characterized in that, include: The main body, the first molding part, and the second molding part are provided. The first molding part is located below the main body, and the second molding part is located below the first molding part. The main body, the first molding part, and the second molding part are smoothly connected in sequence along the vertical direction. The top of the main body is recessed to form a guide hole. The radius of the second molding part gradually decreases from top to bottom along the central axis. Wherein, the maximum diameter of the first molding part is greater than the maximum diameter of the main body part, and the maximum diameter of the first molding part is greater than the maximum diameter of the second molding part.
2. The novel punch as described in claim 1, characterized in that, The inner diameter of the guide hole gradually decreases from top to bottom along the central axis.
3. The novel punch as described in claim 1 or 2, characterized in that, The ratio of the minimum inner diameter of the guide hole to the depth of the guide hole is 2 to 3.5, the ratio of the depth of the guide hole to the total height of the main body is 0.4 to 0.8, the ratio of the minimum inner diameter of the guide hole to the maximum diameter of the main body is 0.25 to 0.65, and the lower and upper edges of the guide hole are both arranged in an arc.
4. The novel punch as described in claim 1, characterized in that, The ratio of the maximum diameter of the first molding part to the maximum diameter of the main body part is 1.02 to 1.
15.
5. The novel punch as described in claim 1, characterized in that, The ratio of the total height of the main body to the total height of the first molding part is 0.4 to 0.9, and the ratio of the total height of the first molding part to the total height of the second molding part is 2 to 4.
6. The novel punch as described in claim 1, characterized in that, The first forming part is configured as an arc surface, a conical surface, or a combination of an arc surface and a conical surface, wherein the arc surface is configured as an arc surface that convexes outward in the radial direction of the main body.
7. The novel punch as described in claim 6, characterized in that, The radius of the first forming part increases first and then decreases from top to bottom along the central axis.
8. The novel punch as described in claim 1, characterized in that, The second forming part is configured as an arc surface or a conical surface, wherein the arc surface is configured as an arc surface that convexes outward in the radial direction of the main body.