Novel blank punching tool

Abstract

The utility model relates to a novel blank punching tool which comprises a die body, a forming cavity and a limiting cavity which sequentially extend in the vertical direction are formed in the middle of the die body, and the forming cavity is communicated with the limiting cavity. The base assembly comprises a leakage plate pad and an insert, the leakage plate pad is embedded in the limiting cavity, a first through hole extending in the vertical direction is formed in the middle of the leakage plate pad, a limiting part is formed in the position, located at the top end of the first through hole, of the leakage plate pad, the insert abuts against the limiting part, and a second through hole extending in the vertical direction is formed in the middle of the insert; the maximum diameter of the second through hole is smaller than or equal to the minimum diameter of the first through hole; and the outer peripheral surface of the punch assembly can be connected with the hole wall of the second through hole in a sliding manner. The utility model provides a novel blank punching tool with high efficiency and high yield through the die body, the drain plate, the insert and the punch assembly, and the novel blank punching tool has the advantages of good interchangeability, reduction of the cost of forgings and guarantee of the product quality.

Description

TECHNICAL FIELD

[0001] The utility model relates to a forging technical field, specifically, a kind of novel blank punching tool. BACKGROUND

[0002] The traditional punching mode of current forging industry is to press punch into blank from upper end face of blank, then overturn blank, and then press punch into blank from lower end face or cut edge, press again, rely on cutting edge or punch and blank to produce shearing effect to achieve the purpose of forging punching. The traditional punching mode needs to press punch into blank from two ends of blank twice, which is difficult to guarantee the concentricity of punch and cutting edge, and further causes the formation of punching step or punching skin in inner diameter when punching. Since the punching size is relatively small and the temperature of blank is high, the punching skin is difficult to be found and removed, and further forms forging defects to cause product scrap. The traditional punching mode has long operation time. After punch is pressed into blank, cutting edge part of die bottom is extruded by blank during cutting edge process, and further causes the strength of cutting edge part to decrease under the action of high temperature. After being subjected to pressure, cutting edge part of die is easy to deform and wear, which causes short service life of die, makes die difficult to be reused, and has high cost. The blank needs to be overturned in the traditional punching mode, and the positions of punch and cutting edge need to be adjusted, so the operation time is long and the efficiency is low. SUMMARY

[0003] The utility model aims at providing a kind of novel blank punching tool to solve the problems raised in the above background.

[0004] The technical scheme for solving the above problems of the utility model is as follows: a kind of novel blank punching tool, comprising:

[0005] Die body, the middle part of the die body is provided with a forming cavity and a limiting cavity extending in vertical direction in sequence, and the forming cavity is communicated with the limiting cavity;

[0006] Base assembly, the base assembly includes a leak disc pad and an inlay block, the leak disc pad is embedded in the limiting cavity, the middle part of the leak disc pad is provided with a first through hole extending in vertical direction, and a limiting part is formed at the top end of the first through hole on the leak disc pad;The inlay block is in abutment with the limiting part, the middle part of the inlay block is provided with a second through hole extending in vertical direction, and the maximum diameter of the second through hole is less than or equal to the minimum diameter of the first through hole;

[0007] Punch assembly, the outer circumferential surface of the punch assembly can be slidably connected with the hole wall of the second through hole.

[0008] In some embodiments, the new blank punching tool further comprises a positioning block, a positioning through hole extending in a vertical direction is arranged in the middle of the positioning block, and an outer circumferential surface of the positioning block is in sliding connection with a cavity wall of the forming cavity.

[0009] In some embodiments, the new blank punching tool further comprises a spacer, and an outer circumferential surface of the spacer is in sliding connection with a hole wall of the second through hole.

[0010] In some embodiments, the limiting part is a groove, and the insert block is embedded in the groove.

[0011] In some embodiments, an inner diameter of a side wall of the groove gradually decreases from top to bottom in a vertical direction.

[0012] In some embodiments, the side wall of the groove is provided in an arc surface or a conical surface or a combination of an arc surface and a conical surface, and the arc surface is provided as an arc surface protruding outward in a radial direction of the first through hole.

[0013] In some embodiments, the axis of the first through hole and the axis of the second through hole and the axis of the positioning through hole are located on the same straight line.

[0014] In some embodiments, an inner diameter of the limiting cavity gradually decreases from top to bottom in a vertical direction, and an inner wall surface of the limiting cavity is provided in a conical surface.

[0015] In some embodiments, the punch assembly comprises a punch, a punch rod and a ejector rod connected in sequence in a vertical direction, the punch rod is located below the ejector rod, and the punch is located below the punch rod.

[0016] In some embodiments, the height H of the forming cavity ranges from 100 mm to 300 mm. In some embodiments, H1 is the height of the punch, H2 is the height of the punch rod, H3 is the height of the ejector rod, and H4 is the height of the limiting cavity.

[0017] In some embodiments, the material of the leak disc pad and the insert block is metal, and the strength of the insert block is greater than the strength of the leak disc pad.

[0018] The beneficial effects of the utility model are as follows: through the technical scheme of the utility model, a new blank punching tool with high efficiency and high material yield is provided by using a mold body, a leak disc, an insert block and a punch assembly, the new blank punching tool has good interchangeability, reduces the cost of forgings and guarantees product quality. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A structure schematic view of a new blank punching tool is shown;

[0020] Figure 2 A structure schematic view of a new blank punching tool is shown;Figure 1 Structure diagram of another embodiment of the new blank punching tool shown in the middle.

[0021] Reference signs: 1-mold body; 2-pan gasket; 3-insert block; 4-pad block; 5-punch; 6-punch rod; 7-ejector rod; 8-positioning block; A-blank. DETAILED DESCRIPTION

[0022] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be appreciated that these embodiments are discussed only with the intent that one of ordinary skill in the art would be better able to understand and thus implement the present disclosure, and not with the intent to limit the scope of the disclosure.

[0023] As used herein, the term "includes" and its variants are to be read as open-ended terms that mean "includes, but is not limited to." The term "based on" is to be construed as "based at least in part on." The terms "a" and "an" are to be construed as "at least one" The term "another" is to be construed as "at least one other." The terms "on," "under," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," "longitudinal," and similar terms are used for orientation or positional relationship based on the orientation or positional relationship as shown in the drawings. These terms are used primarily just to better describe the application and its embodiments, and are not used to limit the indicated device, element or component to a particular orientation or configuration, or to a particular orientation or configuration of operation. Also, some of the terms discussed above, in addition to possibly being used to indicate orientation or positional relationships, can also be used to indicate other relationships or meanings, such as the term "on" can also be used to indicate some type of attachment or connection in some cases. Those of ordinary skill in the art will appreciate the specific meaning of these terms in the context of the present application based on the specific context in which they are used. Furthermore, the terms "mount," "provide," "have," "connected," "coupled," and "connected" are to be construed 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 via an intermediate medium, or an internal connection between two devices, elements or components. Those of ordinary skill in the art will appreciate the specific meaning of these terms in the context of the present application based on the specific context in which they are used. Furthermore, the terms "first," "second," and the like are primarily used to distinguish different devices, elements or components (the specific type and configuration of which can be the same or different), and are not used to indicate or imply relative importance or quantity. Unless otherwise stated, the meaning of "a plurality" is two or more.

[0024] The present embodiment discloses a new blank A punching tool, as shown in the middle. Figure 1 With Figure 2The new blank A punching tool shown in the embodiment comprises:

[0025] The mold body 1 is provided with a forming cavity and a limiting cavity extending in the vertical direction in the middle part, and the forming cavity and the limiting cavity are communicated;

[0026] The base assembly comprises a leakage disc pad 2 and an insert block 3, the leakage disc pad 2 is embedded in the limiting cavity, the leakage disc pad 2 is provided with a first through hole extending in the vertical direction in the middle part, and a limiting part is formed at the top end of the first through hole on the leakage disc pad 2, the insert block 3 is in abutment with the limiting part, the insert block 3 is provided with a second through hole extending in the vertical direction in the middle part, and the maximum diameter of the second through hole is less than or equal to the minimum diameter of the first through hole;

[0027] The outer peripheral surface of the punch 5 assembly can be in sliding connection with the hole wall of the second through hole.

[0028] In the embodiment, a new blank A punching tool is provided, the base assembly is embedded in the limiting cavity, so that the new blank A punching tool can be directly placed on the operation platform when the extrusion blank is punched, the base assembly is used to accommodate the blank A in the forming cavity, and the punch 5 of the punch 5 assembly is used to extrude the blank in the vertical direction downward to form a punch hole. In the present application, the new blank A punching tool is used to perform the "punching" and "leakage hole" processes on the blank. In the "leakage hole" process, the punch 5 of the punch 5 assembly continues to extrude the blank in the vertical direction downward, so that the part of the blank A above the base assembly extrudes the insert block 3 to deform, and is cut at the edge of the top end of the second through hole in the insert block 3 to fall into the first through hole, so that the blank A in the forming cavity is finally formed into a required ring sleeve product.

[0029] Specifically, since the leakage disc pad 2 of the base assembly only needs to bear the load during the "leakage hole" process, the force applied to the top end of the leakage disc pad 2 is smaller than the force applied to the insert block 3, and since the blank A is cut at the edge of the top end of the second through hole of the insert block 3, the force applied to this position is the largest, which is easy to cause the insert block 3 at the edge of the top end of the second through hole to deform or wear. Therefore, when the insert block 3 deforms or wears during a long operation process of the new blank A punching tool, only a new insert block 3 needs to be replaced, without the need to replace the entire new blank A punching tool, so as to reduce the manufacturing cost during replacement. Secondly, since the leakage disc pad 2 is directly embedded in the limiting cavity, and the new insert block 3 can be directly placed on the leakage disc pad 2 through the forming cavity of the mold body 1, so that the insert block 3 is in abutment with the limiting part. Through the above arrangement, the installation and disassembly of the insert block 3 can be quickly realized, so that the operation is simple.

[0030] In some embodiments, the new blank A punching tool further comprises a positioning block 8, the positioning block 8 is provided with a positioning through hole extending in the vertical direction in the middle part, and the outer peripheral surface of the positioning block 8 is in sliding connection with the cavity wall of the forming cavity, and the outer peripheral surface of the punch 5 assembly is in sliding connection with the hole wall of the positioning through hole.

[0031] In the present embodiment, by providing the positioning block 8, the positioning through hole is formed in the middle part of the positioning block 8, so that the outer peripheral surface of the punch 5 assembly is in sliding connection with the hole wall of the positioning through hole, so that the punch 5 of the punch 5 assembly can maintain a relatively straight movement state in the "punching" process, thereby realizing the punching of the blank A in the forming cavity, and avoiding the eccentric phenomenon during punching. In the present embodiment, the blank A is arranged in the forming cavity, and part of the surface of the blank A is in abutment with part of the cavity wall of the forming cavity. When the outer peripheral surface of the positioning block 8 is in sliding connection with the cavity wall of the forming cavity, the punch 5 of the punch 5 assembly can apply pressure to one end of the blank A through the positioning through hole. In the present application, the above structure arrangement can ensure that the punch 5 does not deviate during the punching process, thereby avoiding the problems of punching eccentricity and uneven hole wall.

[0032] In some embodiments, the new blank A punching tool further comprises a spacer 4, and the outer peripheral surface of the spacer 4 is in sliding connection with the hole wall of the second through hole.

[0033] In the present embodiment, by arranging the spacer 4 inside the base assembly, the spacer 4 is partially located in the first through hole and partially extends into the forming cavity through the second through hole, so that the spacer 4 cooperates with the base assembly to bear the blank A when the new blank A punching tool performs the "punching" process, so that the blank A can fully deform in the forming cavity, thereby improving the product quality of the blank A and preventing the surface from being uneven due to incomplete deformation of the blank A. In the present application, when the blank A is subjected to the "punching" process, the blank A can be placed between the spacer 4 and the punch 5, and when the "punching" process of the blank A is completed, the spacer 4 can be removed to quickly cut and punch the bottom of the blank A, thereby completing the punching, so that the new blank A punching tool does not need to turn over the blank A as in the traditional punching method, thereby improving the production efficiency.

[0034] In some embodiments, the limiting part is a groove, and the insert 3 is embedded in the groove. In this embodiment, the limiting part can be arranged as a groove to facilitate the quick installation of the insert 3 in the groove, thereby completing the embedding arrangement of the insert 3 and the groove. Furthermore, due to the weight of the insert 3 itself, the insert 3 can be abutted against the inner wall surface of the groove, thereby completing the installation of the insert 3. When a new insert 3 is needed, the new blank A punching tool can be placed upside down. Due to the weight of the insert 3 itself, the insert 3 is forced to separate from the disc pad 2, and then the new insert 3 is installed in the groove. In this application, the limiting part can also be a fixing part for limiting the insert 3 at the top of the disc pad 2. The fixing part can be a screw, a pin shaft, etc., which is not limited in this application.

[0035] In some embodiments, the inner diameter of the side wall of the groove gradually decreases from top to bottom in the vertical direction.

[0036] Further, the side wall of the groove is arranged as an arc surface or a conical surface or a combination of an arc surface and a conical surface, wherein the arc surface is arranged as an outwardly convex arc surface along the radial direction of the first through hole.

[0037] In this embodiment, when the side wall of the groove is arranged as a conical surface, the outer surface of the insert 3 is also arranged as a conical surface, thereby enabling the insert 3 to be in an embedding arrangement with the groove. In this application, through the above structural arrangement, the contact area between the insert 3 and the disc pad 2 can be increased, and the stability can be increased.

[0038] In this embodiment, when the side wall of the groove is arranged as an arc surface, the arc surface is arranged as an outwardly convex arc surface along the radial direction of the first through hole. In this way, the outer diameter size of the insert 3 is increased, thereby improving the structural strength of the insert 3. At the same time, by arranging the arc surface as an outwardly convex arc surface along the radial direction of the first through hole, the force can be quickly conducted to each part of the disc pad 2 through the arc surface when the insert 3 is subjected to extrusion stress, so as to further reduce the deformation or wear of the insert 3, thereby improving the service life of the new blank A punching tool.

[0039] In some embodiments, the axis of the first through hole, the axis of the second through hole, and the axis of the positioning through hole are located on the same straight line.

[0040] In this embodiment, through the above structural arrangement, the stability of the punch 5 of the punch 5 assembly during movement is maintained, and the punching precision is further improved.

[0041] In some embodiments, the inner diameter of the limiting cavity gradually decreases from top to bottom in the vertical direction, and the inner wall surface of the limiting cavity is arranged as a conical surface.

[0042] In this embodiment, through the above structural arrangement, the outer peripheral surface of the drain pad 2 can also form a conical surface, so that the drain pad 2 and the limiting cavity of the mold body 1 are arranged in an embedded fit, thereby increasing the contact area between the mold body 1 and the drain pad 2 and increasing stability.

[0043] In some embodiments, both the drain pad 2 and the insert 3 are made of metal, and the strength of the insert 3 is greater than that of the drain pad 2. In this embodiment, the above arrangement makes the insert 3 less prone to deformation or wear, further improving its service life.

[0044] In some embodiments, the punch 5 assembly includes a punch 5, a punch rod 6, and a push rod 7 connected in sequence along a vertical direction, wherein the punch rod 6 is located below the push rod 7, and the punch 5 is located below the punch rod 6;

[0045] The height H of the molding cavity is within the range of: Where H1 is the height of punch 5, H2 is the height of punch rod 6, H3 is the height of push rod 7, and H4 is the height of limiting cavity.

[0046] In this embodiment, the above-described structure enables the new blank A punching fixture to complete the "punching" process, and after completing the "punching" process, directly remove the pad 4, and then continue to complete the "draining" process until the bottom of the blank A is cut off and punched through, thereby completing the draining process.

[0047] In summary, the above structural design provides a novel billet punching fixture with high efficiency and high yield, utilizing the mold body, slot, insert, and punch assembly. It features good interchangeability, reduced forging costs, and guaranteed product quality.

[0048] 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.

[0049] 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 blank piercing tool characterized by, The utility model relates to a new type blank punching tool, which comprises a mold body, a base assembly and a punch assembly. The mold body is provided with a forming cavity and a limiting cavity extending in a vertical direction in sequence in the middle part. The base assembly comprises a leakage disc pad and an inlay block. The leakage disc pad is embedded in the limiting cavity.

2. The novel blank piercing tool according to claim 1, wherein The leakage disc pad is provided with a first through hole extending in a vertical direction in the middle part.

3. The novel blank piercing tool according to claim 1, wherein A limiting part is formed at the top end of the first through hole on the leakage disc pad.

4. The novel blank piercing tool according to claim 1, wherein The inlay block abuts against the limiting part.

5. The novel blank piercing tool according to claim 4, wherein The inlay block is provided with a second through hole extending in a vertical direction in the middle part.

6. The novel blank piercing tool according to claim 5, wherein The maximum diameter of the second through hole is less than or equal to the minimum diameter of the first through hole.

7. The novel blank piercing tool according to claim 2, wherein The outer periphery of the punch assembly can be in sliding connection with the hole wall of the second through hole.

8. The novel blank piercing tool according to claim 1, wherein The new type blank punching tool further comprises a positioning block.

9. The novel blank piercing tool according to claim 1, wherein The positioning block is provided with a positioning through hole extending in a vertical direction in the middle part. The height H of the forming cavity ranges from 0.5 mm to 2 mm. H1 is the height of the punch, H2 is the height of the punch rod, H3 is the height of the ejector rod, and H4 is the height of the limiting cavity.

10. The novel blank piercing tool according to claim 1, wherein The outer periphery of the positioning block can be in sliding connection with the cavity wall of the forming cavity. The outer periphery of the punch assembly can be in sliding connection with the hole wall of the positioning through hole. The new type blank punching tool further comprises a pad block. The outer periphery of the pad block can be in sliding connection with the hole wall of the second through hole. The limiting part is a groove. The inlay block is embedded in the groove. The inner diameter of the side wall of the groove gradually decreases from top to bottom in a vertical direction. The side wall of the groove is provided as an arc surface or a conical surface or a combination of an arc surface and a conical surface. The arc surface is provided as an arc surface protruding outward in the radial direction of the first through hole. The axis of the first through hole, the axis of the second through hole and the axis of the positioning through hole are located on the same straight line. The inner diameter of the limiting cavity gradually decreases from top to bottom in a vertical direction. The inner wall surface of the limiting cavity is provided as a conical surface. The punch assembly comprises a punch, a punch rod and a ejector rod connected in sequence in a vertical direction. The punch rod is located below the ejector rod. The punch rod is located below the punch. The leakage disc pad and the inlay block are both made of metal material. The strength of the inlay block is greater than that of the leakage disc pad.

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