Tooling for round bar punching or roundness correction

By introducing sliding guides and elastic buffer structures into the tooling, the problem of uneven force during the stamping of round bars is solved, the machining accuracy and surface quality of the round bars are improved, and the service life of the tooling is extended.

CN224406103UActive Publication Date: 2026-06-26BAOJI BAISHENGTAI NONFERROUS METAL MATERIALS CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BAOJI BAISHENGTAI NONFERROUS METAL MATERIALS CO LTD
Filing Date
2025-04-21
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing tooling lacks buffering and guiding functions during the stamping or straightening of round bars, resulting in uneven force on the round bars, easy deformation and surface damage, and low positioning accuracy, making it difficult to meet the requirements of high-precision machining.

Method used

A tooling fixture including a lower mold base, an upper mold base, a lower mold, and an upper mold is designed. It adopts a sliding guide structure and an elastic buffer structure. The contact surfaces of the lower mold and the upper mold are arc-shaped grooves. They are positioned and installed by a pin shaft. The slider is slidably connected to the slide groove. The elastic buffer structure consists of a spring and a guide post. A lubrication groove is provided to reduce friction.

Benefits of technology

It achieves uniform stress distribution on round bars during the stamping process, reduces deformation and surface damage, improves machining and positioning accuracy, and extends the service life of tooling.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a tool for round bar stamping or correcting roundness belongs to mechanical processing technical field, including lower die seat, upper die seat, lower die and upper die, the lower die seat installs lower die, the upper die seat installs upper die, the lower die seat and upper die seat are connected through sliding guide structure, the sliding guide structure is equipped with elastic buffer structure in, the utility model discloses can even support round bar, has the buffer and guide function to improve the processing precision and round bar surface quality.
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Description

Technical Field

[0001] This utility model belongs to the field of machining technology, specifically relating to a tooling for stamping or correcting the roundness of round bars. Background Technology

[0002] During the machining process, round bars often require stamping or roundness correction using a press. Existing tooling typically employs a fixed support structure, lacking buffering and guiding functions, resulting in uneven stress on the round bars during stamping, which can easily lead to deformation or surface damage. Furthermore, traditional tooling has low positioning accuracy, making it difficult to meet the requirements of high-precision machining. Therefore, there is an urgent need for a tooling that can uniformly support the round bars, has a buffering function, and provides precise positioning to improve machining quality and efficiency. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a tooling for stamping or correcting the roundness of round bars. The purpose of this utility model is to uniformly support the round bars and have buffering and guiding functions, thereby improving the processing accuracy and surface quality of the round bars.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] Tooling for stamping or correcting the roundness of round bars, including a lower die holder, an upper die holder, a lower die, and an upper die;

[0006] The lower mold is mounted on the lower mold base, and the upper mold is mounted on the upper mold base; the lower mold base and the upper mold base are connected by a sliding guide structure, and the sliding guide structure is provided with an elastic buffer structure inside.

[0007] As a further limitation of the above scheme, the contact surface of the lower mold and the upper mold is an arc-shaped groove that matches the outer diameter of the round bar.

[0008] Further defining the above scheme, the lower mold is positioned and installed on the lower mold base by a pin, and the upper mold is positioned and installed on the upper mold base by a pin; pin mounting grooves for pin mounting are provided at corresponding positions of the lower mold and the lower mold base, as well as at corresponding positions of the upper mold and the upper mold base.

[0009] Further defining the above solution, the pin is a square pin, and the pin mounting groove is a square groove adapted to the square pin.

[0010] Further defining the above scheme, the sliding guide structure includes a slider on the lower mold base and a groove on the upper mold base, wherein the slider and the groove are slidably connected.

[0011] Further defining the above solution, the elastic buffer structure includes a spring and a guide post, the slider is provided with a spring mounting groove, the spring is disposed in the spring mounting groove, and the guide post is sleeved inside the spring.

[0012] As a further limitation of the above scheme, the slide groove is provided with a lubrication groove.

[0013] To further specify the above solution, the spring is a compression spring.

[0014] Further defining the above scheme, the lower mold base is provided with a movable lower mold base insertion hole, the upper mold base is provided with a movable upper mold base insertion hole, the lower mold is provided with a movable lower mold insertion hole, and the upper mold is provided with a movable upper mold insertion hole.

[0015] Advantages of this utility model compared to the prior art:

[0016] 1. In this solution, during the operation of the lower and upper dies, the sliding guide structure and the elastic buffer structure work together to ensure that the round bar is subjected to uniform force during the stamping process, thereby reducing deformation and surface damage.

[0017] 2. The arc-shaped groove design of the lower and upper dies in this solution can better fit the outer diameter of the round bar and improve the machining accuracy;

[0018] 3. In this solution, the upper and lower molds are fixed to the upper and lower mold bases by a pin-shaft positioning installation method, which improves the positioning accuracy and stability of the tooling;

[0019] 4. The lubrication groove in this solution reduces friction loss and extends the service life of the tooling. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is the front view of the present invention;

[0022] Figure 3 This is the left view of the present invention;

[0023] Figure 4 This utility model Figure 2 Sectional view along direction AA. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0025] Please see Figure 1-4 The embodiments of this utility model are described in detail below.

[0026] Example: Tooling for stamping or correcting the roundness of round bars, see reference. Figure 1-3 As shown, it includes a lower mold base 1, an upper mold base 2, a lower mold 3, and an upper mold 4; the lower mold 3 is installed on the lower mold base 1, and the upper mold 4 is installed on the upper mold base 2; the lower mold base 1 and the upper mold base 2 are connected by a sliding guide structure 6, and the sliding guide structure 6 is provided with an elastic buffer structure inside.

[0027] In this embodiment, during the operation of the lower and upper dies, the sliding guide structure and the elastic buffer structure work together to ensure that the round bar is subjected to uniform force during the stamping process, thereby reducing deformation and surface damage.

[0028] In one specific embodiment: the contact surface of the lower mold 3 and the upper mold 4 is an arc-shaped groove 16 that matches the outer diameter of the round bar, which is used to support the round bar to ensure that the round bar is subjected to uniform force during processing.

[0029] In one specific embodiment: the lower mold 3 is positioned and installed on the lower mold base 1 by a pin 5, and the upper mold 4 is positioned and installed on the upper mold base 2 by a pin 5; pin mounting grooves 17 for mounting the pin 5 are provided at corresponding positions of the lower mold 3 and the lower mold base 1, and at corresponding positions of the upper mold 4 and the upper mold base 2.

[0030] Preferably, the pin 5 is a square pin, used to ensure the positioning accuracy of the lower mold and the upper mold; the pin mounting groove 17 is a square groove adapted to the square pin.

[0031] In this embodiment, the upper and lower molds are fixed to the upper and lower mold bases by means of pin positioning installation, which improves the positioning accuracy and stability of the tooling.

[0032] In one specific implementation: See Figure 3 As shown, the sliding guide structure 6 includes a slider 7 on the lower mold base 1 and a sliding groove 8 on the upper mold base 2, wherein the slider 7 and the sliding groove 8 are slidably connected. The sliding groove 8 is provided with a lubrication groove to reduce friction between the slider and the sliding groove and improve sliding smoothness.

[0033] In one specific implementation: See Figure 4 As shown, the elastic buffer structure includes a spring 10 and a guide post 11. The slider 7 has a spring mounting groove 9, and the spring 10 is disposed in the spring mounting groove 9. The guide post 11 is sleeved inside the spring 10. Preferably, the spring 10 is a compression spring.

[0034] The aforementioned structure is used to provide a buffering force during the stamping process, reducing the impact on the round bar.

[0035] In one specific embodiment: the lower mold base 1 is provided with a lower mold base insertion hole 14 for easy movement, the upper mold base 2 is provided with an upper mold base insertion hole 15 for easy movement, the lower mold 3 is provided with a lower mold insertion hole 13 for easy movement, and the upper mold 4 is provided with an upper mold insertion hole 12 for easy movement.

[0036] During processing, the round bar is placed in the arc-shaped groove of the lower die 3, and the upper die 2 moves downward under the action of the press. Through the guidance and buffering of the sliding guide structure 6, the upper die 4 evenly presses the round bar to complete the stamping or roundness correction operation. This utility model can evenly support the round bar, has buffering and guiding functions, and effectively improves the processing accuracy and surface quality of the round bar.

[0037] 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 illustrative 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. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tool for swaging or straightening roundness of a round bar, characterized by: It includes a lower mold base (1), an upper mold base (2), a lower mold (3), and an upper mold (4); The lower mold (3) is installed on the lower mold base (1), and the upper mold (4) is installed on the upper mold base (2); the lower mold base (1) and the upper mold base (2) are connected by a sliding guide structure (6), and the sliding guide structure (6) is provided with an elastic buffer structure inside; The lower mold (3) is positioned and installed on the lower mold base (1) by a pin (5), and the upper mold (4) is positioned and installed on the upper mold base (2) by a pin (5); the lower mold (3) and the lower mold base (1) at corresponding positions, and the upper mold (4) and the upper mold base (2) at corresponding positions, are provided with pin mounting grooves (17) for mounting the pin (5); The pin (5) is a square pin, and the pin mounting groove (17) is a square groove adapted to the square pin.

2. The tooling for stamping or correcting the roundness of round bars according to claim 1, characterized in that: The contact surface of the lower mold (3) and the upper mold (4) is an arc-shaped groove (16) that matches the outer diameter of the round bar.

3. The tooling for stamping or correcting the roundness of round bars according to claim 1, characterized in that: The sliding guide structure (6) includes a slider (7) on the lower mold base (1) and a groove (8) on the upper mold base (2), wherein the slider (7) and the groove (8) are slidably connected.

4. The tooling for stamping or correcting the roundness of round bars according to claim 3, characterized in that: The elastic buffer structure includes a spring (10) and a guide post (11). The slider (7) is provided with a spring mounting groove (9). The spring (10) is located in the spring mounting groove (9). The guide post (11) is sleeved inside the spring (10).

5. The tooling for stamping or correcting the roundness of round bars according to claim 3, characterized in that: The slide (8) is provided with a lubrication groove.

6. The tooling for stamping or correcting the roundness of round bars according to claim 4, characterized in that: The spring (10) is a compression spring.

7. The tooling for stamping or correcting the roundness of round bars according to claim 1, characterized in that: The lower mold base (1) is provided with a lower mold base insertion hole (14) for easy movement, the upper mold base (2) is provided with an upper mold base insertion hole (15) for easy movement, the lower mold (3) is provided with a lower mold insertion hole (13) for easy movement, and the upper mold (4) is provided with an upper mold insertion hole (12) for easy movement.