Shot peening rack and shot peening device
By designing a shot peening rack and shot peening device to work together, the problem that existing equipment cannot cover the entire surface of the gearbox housing was solved, achieving all-round shot peening treatment and improving the uniformity and effect of shot peening treatment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANQING TP POWDER METALLURGY CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-07-31
AI Technical Summary
Existing shot peening equipment cannot effectively cover all surfaces of complex geometries such as gearbox housings, especially the inner and outer surfaces, resulting in uneven shot peening treatment.
A shot peening hanger was designed, including a support part, a first connecting part and a first limiting part. It works in conjunction with the rotating shaft and base of the shot peening device to achieve all-round shot peening treatment of the workpiece. The suspension and limiting structure ensures the stability of the workpiece during rotation.
It enables all-round shot peening of complex structures such as gearbox housings, improving the uniformity and effectiveness of shot peening.
Smart Images
Figure CN224575424U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of shot peening tooling technology, specifically to a shot peening hanger and a shot peening device. Background Technology
[0002] In the automotive manufacturing industry, to meet the requirements of lightweighting, aluminum parts are increasingly replacing traditional steel parts. This trend is gradually expanding from body parts to chassis and powertrain modules. For example, in some new products, aluminum castings have replaced traditional cast iron parts for components such as transmission housings. When high-pressure aluminum castings are used in functional parts, shot peening is required. Shot peening releases surface stress during the die-casting process and simultaneously closes microcracks formed on the surface of the aluminum casting during die-casting.
[0003] While shot peening equipment exists in the prior art, it is largely unsuitable for the application scenario described in this application. For example, utility model patents CN218461897U ("A Shot Peening Device for Aluminum Ladder Processing") and CN210849832U ("An Auxiliary Tooling for Shot Peening Strengthening Aluminum Alloy Beam-Type Parts") both disclose equipment for shot peening aluminum parts. Both feature a rotating and fixed clamping platform on which the corresponding parts requiring shot peening are fixed.
[0004] For the application scenario of this application, taking a transmission housing as an example, the shot peening operation needs to cover almost all the inner and outer surfaces of the housing, more precisely, all the outer surfaces and most of the inner surfaces, with only specific deep cavity locations acceptable for inadequate shot peening. Since almost all surfaces need to be treated, this means that the housing needs to be shot peened from all directions. However, existing clamping devices always have one side obstructing the view of the product, thus making it impossible to complete the shot peening operation on almost all the required surfaces. Utility Model Content
[0005] To facilitate the shot peening treatment of the required surface of a product, this application provides a shot peening rack and a shot peening device.
[0006] This application provides a shot peening rack, including
[0007] The support portion is used to place the workpiece to be shot peened; the support portion has a first end and a second end; wherein the first end of the support portion is located above the support portion, and the second end of the support portion is located below the support portion.
[0008] The first connecting part is connected to the first end of the supporting part; during shot peening, it is located above the supporting part.
[0009] The first limiting part is connected to the second end of the supporting part; during shot peening, it is located below the supporting part.
[0010] Preferably, the first connecting part is an open hook or a closed ring.
[0011] Preferably, the first limiting part is a downwardly extending protrusion.
[0012] Preferably, the first limiting part is a cantilevered rod-shaped object, or the first limiting part is a cantilevered ring-shaped or cylindrical object, which is sleeved around the preset limiting member.
[0013] Preferably, the support portion has several placement positions for the workpiece distributed from top to bottom.
[0014] Preferably, the placement position includes a suspension arm, a first support arm, and a second support arm; wherein the suspension arm extends into the slot of the workpiece to suspend the workpiece on the shot peening fixture;
[0015] The first support arm and the second support arm are located at the bottom of the workpiece to support it.
[0016] Preferably, at least one of the suspension arm, the first support arm, and the second support arm is provided with a protrusion; due to the presence of the protrusion, a groove is formed, in which the workpiece is situated or suspended.
[0017] This application also provides a shot peening device, including a treatment chamber, the interior of which is provided with a plurality of shot blasting devices;
[0018] The processing chamber is also equipped with a rotating shaft and a base. The rotating shaft and the base are placed in the processing chamber in the vertical direction with a middle gap, and the rotating shaft is located above the base.
[0019] A second connecting part is formed on the rotating shaft, and a second limiting part is formed on the base.
[0020] This application's shot peening rack provides a shot peening fixture and shot peening equipment that work together. The first connecting part of the shot peening fixture allows it to be suspended within the shot peening equipment and rotate with a rotating shaft. A first limiting part maintains the stability of the shot peening fixture during rotation, preventing it from deflecting. The combination of these technical solutions allows for comprehensive shot peening of the workpiece, reducing the area of untreated workpieces, improving the uniformity of the shot peening process, and enhancing the overall shot peening effect. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the shot peening fixture 1 of the shot peening rack in this application;
[0022] Figure 2 This is a structural schematic diagram of the shot peening device 2 of the shot peening hanger of this application.
[0023] In the picture:
[0024] 1: Shot peening fixture; 11: First connecting part; 12: First limiting part; 13: Supporting part; 2: Shot peening equipment; 21: Rotating shaft; 211: Second connecting part; 22: Base; 221: Second limiting part; 23: Processing chamber; 31: Suspension arm; 311: Groove; 312: Protrusion; 32: First support arm; 33: Second support arm; W: Workpiece. Detailed Implementation
[0025] The technical solution of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. In this specification, the dimensions of the drawings do not represent the actual size ratio. The drawings are only used to illustrate the relative positional relationship and connection relationship between the components. Components with the same name or the same reference numeral represent similar or the same structure, and are limited to illustrative purposes.
[0026] Figure 1 This is a schematic diagram of the shot peening rack of this application. The shot peening rack 1 of this application has a support portion 13 for placing the workpiece W to be shot peened. It also has a first connecting portion 11 connected to a first end of the support portion 13 and a first limiting portion 12 connected to a second end of the support portion 13. When used for shot peening operations, the first end of the support portion 13 is above the support portion 13, and the second end of the support portion 13 is below the support portion 13. That is, during shot peening operations, the first connecting portion 11 is above the support portion 13, and the first limiting portion 12 is below the support portion 13. Here, "above" and "below" refer to relative above and relative below along the direction of gravity in the common understanding.
[0027] Figure 2 This is a schematic diagram of the shot peening apparatus of this application. It has a processing chamber 23, inside which are typically installed several shot blasting devices and corresponding shot collection devices. The blasting devices are usually distributed on the sides or top surface of the processing chamber 23, while the shot collection devices are typically located on the bottom surface of the processing chamber 23. A rotating shaft 21 and a base 22 are also installed inside the processing chamber 23. The rotating shaft 21 and the base 22 are positioned vertically within the processing chamber 23 with a certain space between them, with the rotating shaft 21 located above the base 22. A second connecting portion 211 is formed on the rotating shaft 21, and a second limiting portion 221 is formed on the base 22.
[0028] like Figure 2The diagram illustrates that during shot peening, a workpiece W is placed on the shot peening hanger 1, which functions within the shot peening equipment 2. The first connecting part 11 is connected to the second connecting part 211, allowing the first connecting part 11 to rotate with the rotating shaft 21. This causes the integrated shot peening hanger 1 to rotate with the shaft 21. Since the shot peening operation is completed synchronously within the processing chamber 23, the workpiece W can receive shot peening treatment from various directions, achieving the desired effect. To optimize the shot peening effect, the spraying device can be optionally configured on the wall of the processing chamber 23 to have different tilt angles in the vertical plane, producing shot at different angles. Combined with the rotation of the shot peening hanger 1 following the workpiece W, shot peening from various directions on the workpiece W can be achieved. In fact, the first connecting part 11 and the first limiting part 12 preferably have a certain length in the vertical direction to create sufficient clearance between the upper and lower parts of the supporting part 13 during shot peening, ensuring good shot peening treatment of the upper and lower ends of the workpiece W. The second limiting part 221 is used to limit the first limiting part 12 within a specific range, so that the first connecting part 11 is held within the limited range when the shot peening hanger 1 rotates, thereby fixing the position of the lower end of the shot peening hanger 1 when it rotates.
[0029] Figure 2 This is also a specific embodiment of the above-mentioned solution. In this embodiment, the first connecting part 11 is movably disposed at a preset point on the second connecting part 211, ensuring that the rotation of the rotating shaft 21 can be transmitted between the first connecting part 11 and the second connecting part 211. To achieve the separation and connection of the shot peening hanger 1 and the shot peening equipment 2, the connection between the first connecting part 11 and the second connecting part 211 should be separable. Figure 2 In a specific embodiment, the first connecting part 11 is removably suspended from the second connecting part 211 to achieve the above-mentioned function. At least one of the second connecting part 211 and the first connecting part 11 is an open hook in such an embodiment, or in a similar embodiment, one is an open hook while the other is a closed ring. The hooking of the two achieves the connection between the shot peening hanger 1 and the shot peening equipment 2, especially the rotating shaft 21. The hooking design also ensures that the rotation of the rotating shaft 21 can drive the rotation of the shot peening hanger 1.
[0030] exist Figure 2In a specific embodiment, the first limiting part 12 is simply a downwardly extending protrusion, and the first limiting part 12 can be a suspended rod-like object. The second limiting part 221 has a corresponding limiting hole, so the first limiting part 12 can enter the limiting hole of the second limiting part 221 during shot peening operations, achieving the purpose of limiting the lower part of the shot peening fixture 1. Similarly, the second limiting part 221 can also have an upwardly extending protrusion, and the first limiting part 12 can be an annular or cylindrical object that can be fitted onto the outer periphery of the second limiting part 221, thereby limiting the first limiting part 12 to the position of the second limiting part 221, while retaining the possibility of rotation of the first limiting part 12.
[0031] Therefore, in the above technical solution, the shot peening fixture 1 and the shot peening equipment 2 are separable. After the workpiece W is placed on the shot peening fixture 1, it is only necessary to suspend the shot peening fixture 1 inside the processing chamber 23 of the shot peening equipment 2. During the shot peening process, the suspended shot peening fixture 1 is rotated within the processing chamber 23 by the rotating shaft 21, achieving the purpose of uniform shot peening treatment on all parts of the workpiece W.
[0032] In a further embodiment, the support portion 13 has several placement positions for workpieces W distributed from top to bottom, allowing multiple workpieces W to be arranged vertically on the support portion 13. Necessarily, the workpieces W have a certain gap when arranged to avoid obstructing the shot being blasted. For one placement position for workpiece W on the shot peening fixture 1, it includes a suspension arm 31, a first support arm 32, and a second support arm 33. The suspension arm 31 extends into the slot of the workpiece W to suspend the workpiece W on the shot peening fixture 1. At least one of the first support arm 32 and the second support arm 33 is lower than the height of the suspension arm 31 to support the workpiece W. When placing the workpiece W, both the first support arm 32 and the second support arm 33 are located at the bottom of the workpiece W to support and limit the workpiece W, preventing it from falling, shaking, or slipping.
[0033] Specifically, at least one of the suspension arm 31, the first support arm 32, and the second support arm 33 is provided with a protrusion 312. The protrusion 312 can be fixed to the suspension arm 31, the first support arm 32, or the second support arm 33 by welding, direct bending, or threaded connection. Due to the presence of the protrusion 312, a groove 311 is formed. The workpiece W is usually located in or suspended in the groove 311. In this case, the protrusion 312 prevents the workpiece W from falling off and also prevents the workpiece W from shaking during shot peening.
[0034] The above description is merely a preferred embodiment of this application and is not intended to limit the scope of this application. Any modifications and improvements made by those skilled in the art to the technical solutions of this application without departing from the spirit of this application shall fall within the protection scope defined by the claims of this application.
Claims
1. A shot hanger, characterized by, include Support (13) is used to place the workpiece (W) to be shot peened; the support (13) has a first end and a second end; wherein the first end of the support (13) is above the support (13) and the second end of the support (13) is below the support (13); The first connecting part (11) is connected to the first end of the supporting part (13); during shot peening, it is located above the supporting part (13); The first limiting part (12) is connected to the second end of the supporting part (13); during shot peening, it is located below the supporting part (13).
2. The shot hanger of claim 1, wherein The first connecting part (11) is an open hook or a closed ring.
3. The shot hanger of claim 1, wherein The first limiting part (12) is a downwardly extending protrusion.
4. The shot hanger of claim 3, wherein The first limiting part (12) is a cantilevered rod-shaped object, or the first limiting part (12) is a cantilevered ring-shaped or cylindrical object, which is fitted around the preset limiting member.
5. The shot hanger of claim 1, wherein The support section (13) has several placement positions for the workpiece (W) distributed from top to bottom.
6. The shot peening rack as described in claim 5, characterized in that, The placement position includes a suspension arm (31), a first support arm (32) and a second support arm (33); wherein the suspension arm (31) extends into the hole groove of the workpiece (W) and suspends the workpiece (W) on the shot peening fixture (1); The first support arm (32) and the second support arm (33) are located at the bottom of the workpiece (W) to support the workpiece (W).
7. The shot hanger of claim 6, wherein At least one of the suspension arm (31), the first support arm (32), and the second support arm (33) is provided with a protrusion (312); due to the presence of the protrusion (312), a groove (311) is provided, in which the workpiece (W) is situated or suspended.
8. A shot peening device characterized by, It includes a processing chamber (23), and the interior of the processing chamber (23) is equipped with several projectile ejection devices; The processing chamber (23) is also equipped with a rotating shaft (21) and a base (22). The rotating shaft (21) and the base (22) are placed in the processing chamber (23) with a middle gap in the vertical direction, wherein the rotating shaft (21) is located above the base (22). A second connecting part (211) is formed on the rotating shaft (21), and a second limiting part (221) is formed on the base (22).