Blank punching tool
By setting up a sliding connection between the centering die and the punch, the eccentricity problem in the blank punching process is solved, improving product accuracy and production efficiency.
Patent Information
- Application Number
- CN202520316734.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-02-26
AI Technical Summary
In the prior art, irregular shapes and cracks in the blank during the punching process can cause eccentricity in the punching, which affects product accuracy and increases production costs.
Design a blank punching fixture, including a centering die. By setting the centering die, ensure that the punch and the blank are aligned and avoid eccentricity.
This technology avoids eccentricity during the punching process, improving product precision and production efficiency.
Smart Images
Figure CN223916392U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the blank upsetting field, specifically, relate to a blank punching frock. BACKGROUND
[0002] In the processing process of ring blank, there is upsetting punching process to blank, however, the existing blank in the punching process, due to the irregularity of the shape and crack caused by polishing in the early shaping process, finally most likely to cause eccentric phenomenon in the punching process, which not only reduces the precision of the product, but also may lead to product scrap, increases the production cost.
[0003] In order to guarantee that the punch can find the punching hole when stamping the blank, prevent eccentric phenomenon from appearing in the punching process, so as to obtain the required product, the utility model provides a blank punching frock. UTILITY MODEL CONTENTS
[0004] In order to solve the problem of eccentric phenomenon in the punching process, the utility model provides a blank punching frock, which comprises:
[0005] Forming die, the forming die includes die body and forming cavity, the forming cavity is recessed from the end face of the forming die to the inside of the forming die,
[0006] Centering die, the centering die includes centering body and centering hole, the centering hole is recessed from the end face of the centering body to the inside of the centering body and penetrates the centering body, the outer peripheral surface of the centering body can be connected with the cavity wall of the forming cavity in sliding mode,
[0007] Punch, the outer peripheral surface of the punch can be connected with the hole wall of the centering hole in sliding mode.
[0008] In some embodiments, the blank punching frock further comprises a cushion block, the forming cavity penetrates the other end face of the forming die, and the outer peripheral surface of the cushion block can be connected with the peripheral wall of the forming cavity in sliding mode.
[0009] In some embodiments, the first expansion opening is arranged on the forming die, the first expansion opening extends outward from the peripheral wall close to the first cavity opening of the forming cavity along the radial direction of the forming cavity towards the first cavity opening, and penetrates one end face of the forming die.
[0010] In some embodiments, the second expansion opening is arranged on the forming die, the second expansion opening extends from the peripheral wall close to the second cavity opening of the forming cavity along the radial direction of the forming cavity towards the second cavity opening, and penetrates the other end face of the forming die.
[0011] In some embodiments, the forming cavity is located at one end of the forming die and is spaced apart from the end face of the forming die.
[0012] In some embodiments, the forming cavity is cylindrical in shape, and the central axis of the centering hole is equal to the central axis of the forming cavity.
[0013] In some embodiments, the forming cavity is recessed along the central axis of the forming die.
[0014] In some embodiments, the centering hole is recessed along the central axis of the centering body.
[0015] In some embodiments, the gap between the outer peripheral wall of the centering body and the cavity wall of the forming cavity is 0.2-0.5mm.
[0016] To solve the problem of eccentricity in the punching process, the utility model has the following advantages:
[0017] By setting the centering die, the centering die includes a centering body and a centering hole, the outer peripheral surface of the centering body can be slidably connected with the cavity wall of the forming cavity, and the outer peripheral surface of the punch can be slidably connected with the hole wall of the centering hole, so that the punch can maintain a relatively stable movement state in the punching process, thereby realizing punching of the blank in the forming cavity and avoiding eccentricity during punching. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall structure of a blank punching tool;
[0019] Figure 2 It is Figure 1 It is a sectional view along A-A direction;
[0020] Figure 3 It is a schematic diagram of the internal structure of a blank punching tool in some embodiments;
[0021] Figure 4 It is Figure 1 It is an exploded schematic diagram.
[0022] In the figure: 10, forming die; 11, die body; 12, forming cavity; 13, first expansion port; 14, second expansion port; 20, centering die; 21, centering body; 22, centering hole; 30, punch; 40, pad; 50, blank. DETAILED DESCRIPTION
[0023] The present disclosure will now be discussed with reference to a number of example embodiments. It should be appreciated that these embodiments are discussed solely for the purpose of enabling those with ordinary skill in the art to better understand and therefore implement the present disclosure, and are not intended to imply any limitation of the scope of the present disclosure.
[0024] 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.
[0025] This embodiment discloses a 50mm upsetting tool for billets, such as... Figure 1 , Figure 2 , Figure 4 As shown, it may include:
[0026] A molding die 10, comprising a die body 11 and a molding cavity 12; the molding cavity 12 is recessed from one end face of the molding die 10 toward the interior of the molding die 10.
[0027] The centering mold 20 includes a centering body 21 and a centering hole 22; the centering hole 22 is recessed from one end face of the centering body 21 and penetrates the centering body 21; the outer peripheral surface of the centering body 21 can be slidably connected to the cavity wall of the forming cavity 12.
[0028] The punch 30 has an outer peripheral surface that can slide in connection with the wall of the centering hole 22.
[0029] In this embodiment, a centering mold 20 is provided, comprising a centering body 21 and a centering hole 22. The outer peripheral surface of the centering body 21 can slide in connection with the cavity wall of the forming cavity 12, and the outer peripheral surface of the punch 30 can slide in connection with the hole wall of the centering hole 22. This allows the punch 30 to maintain a relatively balanced movement state during the punching process, thereby punching the blank 50 in the forming cavity 12 and avoiding eccentricity during punching. In this embodiment, a blank 50 is provided in the forming cavity 12, and the surface of the blank 50 can abut against part of the cavity wall of the forming cavity 12. When the outer peripheral surface of the centering body 21 slides in connection with the cavity wall of the forming cavity 12, the punch 30 can pass through the centering hole 22 to apply pressure to one end of the blank 50.
[0030] In some embodiments, such as Figure 2 , Figure 4 As shown, the upsetting tooling for the blank 50 also includes a pad block 40; the forming cavity 12 penetrates the other end face of the forming mold 10; the outer peripheral surface of the pad block 40 can be slidably connected to the peripheral wall of the forming cavity 12.
[0031] In this embodiment, by setting the forming cavity 12 to be shaped to penetrate both ends of the forming mold 10, and by providing a pad 40 inside the forming cavity 12, the blank 50 can be placed between the pad 40 and the punch 30 when the blank 50 is stamped. After the blank 50 is punched, the blank 50 can be easily removed from the forming cavity 12 by removing the pad 40, thereby improving production efficiency.
[0032] In some embodiments, such as Figure 3 As shown, the molding die 10 is provided with a first expansion port 13; the first expansion port 13 extends outward from the peripheral wall of the molding cavity 12 near its first cavity opening along the radial direction of the molding cavity 12 toward the first cavity opening, and penetrates one end face of the molding die 10.
[0033] In this embodiment, by providing a first expansion port 13, when the centering body 21 needs to be placed into the molding cavity 12, since the maximum outer diameter of the first expansion port 13 is greater than the outer diameter of the centering body 21, and the first expansion port 13 is chamfered, the centering body 21 can be easily placed into the molding cavity 12, which can improve the ease of use of the tooling.
[0034] In some embodiments, such as Figure 3As shown. The molding die 10 is provided with a second expansion port 14; the second expansion port 14 extends radially from the peripheral wall of the molding cavity 12 close to its second cavity opening toward the second cavity opening, and penetrates the other end face of the molding die 10.
[0035] In this embodiment, by providing a second expansion port 14, when it is necessary to place the pad 40 into the molding cavity 12, since the maximum outer diameter of the second expansion port 14 is greater than the outer diameter of the pad 40, and the second expansion port 14 is chamfered, the pad 40 can be easily placed into the molding cavity 12, which can improve the ease of use of the tooling.
[0036] In some embodiments, one end of the molding cavity 12 located inside the molding mold 10 is spaced apart from the end face of the molding mold 10.
[0037] In this embodiment, the forming cavity 12 is a blind hole, and the forming cavity 12 has good sealing performance. When the blank 50 is placed in the forming cavity for punching, a relatively regular punched blank 50 can be obtained.
[0038] In some embodiments, such as Figure 2 As shown, the molding cavity 12 is cylindrical in shape, and the central axis of the centering hole 22 is equal to the central axis of the molding cavity 12.
[0039] In this embodiment, by setting the forming cavity 12 to be cylindrical and aligning the central axis of the central hole 22 with the central axis of the forming cavity 12, the punching hole for the cylindrical blank 50 located on the central axis can be quickly located, allowing the punch 30 to quickly find the punching hole during punching. In this embodiment, the outer circumferential surface of the cylindrical blank 50 is preferably in contact with the peripheral wall of the forming cavity 12.
[0040] In some embodiments, such as Figure 2 , Figure 3 As shown, the molding cavity 12 is recessed along the central axis of the molding mold 10.
[0041] In this embodiment, by setting the molding cavity 12 to be recessed along the axial direction of the molding die 10, it is easier to set a more regular shape of the molding die 10. Thus, when punching the blank 50, the force received by the molding die 10 in the radial direction of the blank 50 can be more uniform, avoiding excessive local stress in the molding die 10 and ensuring the service life of the molding die 10.
[0042] In some embodiments, the centering hole 22 is recessed along the central axis of the centering body 21.
[0043] In this embodiment, the centering hole 22 is recessed along the central axis of the centering body 21, mainly for centering the blank 50 by punching holes in the direction of the central axis.
[0044] In some embodiments, the gap between the outer peripheral wall of the centering body and the cavity wall of the molding cavity is 0.2mm-0.5mm.
[0045] The working principle of this utility model is as follows:
[0046] When it is necessary to punch the blank 50, first place the blank 50 in the forming cavity 12, then place the centering body 21 into the forming cavity 12, and make one end face of the centering body 21 abut against one end face of the blank 50, while the other end of the blank 50 is fixed. Adjust the centering hole 22 to the preset position, then insert the punch 30 into the centering hole 22, making one end of the punch 30 abut against one end of the blank 50, and then apply pressure to the other end of the punch 30 to punch the blank 50.
[0047] Those skilled in the art will understand that the above embodiments are specific examples of implementing this disclosure, and in practical applications, various changes can be made in form and detail without departing from the spirit and scope of this disclosure.
Claims
1. A blank punching fixture, characterized in that, include: A molding die, the molding die comprising a die body and a molding cavity; The molding cavity is recessed from one end face of the molding mold toward the interior of the molding mold; A centering mold, comprising a centering body and a centering hole; the centering hole is recessed from one end face of the centering body and penetrates the centering body; the outer peripheral surface of the centering body can be slidably connected to the cavity wall of the forming cavity; A punch, the outer peripheral surface of which can be slidably connected to the wall of the centering hole.
2. The blank punching fixture according to claim 1, characterized in that, The blank punching fixture also includes a pad block; the forming cavity penetrates through the other end face of the forming mold; the outer peripheral surface of the pad block can be slidably connected to the peripheral wall of the forming cavity.
3. The blank punching fixture according to claim 2, characterized in that, The molding die is provided with a first expansion port; the first expansion port extends outward from the peripheral wall of the molding cavity near its first cavity opening along the radial direction of the molding cavity toward the first cavity opening, and penetrates one end face of the molding die.
4. The blank punching fixture according to claim 3, characterized in that, The molding die is provided with a second expansion port; the second expansion port extends radially from the peripheral wall of the molding cavity near its second cavity opening toward the second cavity opening, and penetrates through the other end face of the molding die.
5. The blank punching fixture according to claim 1, characterized in that, The molding cavity is located at one end within the molding mold and is spaced apart from the end face of the molding mold.
6. The blank punching fixture according to claim 1, characterized in that, The molding cavity is cylindrical in shape, and the central axis of the centering hole is equal to the central axis of the molding cavity.
7. The blank punching fixture according to claim 1, characterized in that, The molding cavity is recessed along the central axis of the molding mold.
8. The blank punching fixture according to claim 7, characterized in that, The centering hole is recessed along the central axis of the centering body.
9. A blank punching fixture according to claim 1, characterized in that, The gap between the outer peripheral wall of the centering body and the cavity wall of the molding cavity is 0.2mm-0.5mm.