Opposite punching part blank and process for reducing machining stress deformation
By leaving the same machining allowance on the top and bottom surfaces of the part blank, and setting up stress relief grooves and protruding structures, the hedging balanced stress effect is achieved, the problem of mechanical stress deformation is solved, significantly reducing part deformation and cost, and improving processing accuracy is also improved.
Patent Information
- Application Number
- CN202510300434.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2025-05-13
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During the mechanical processing, internal stress of the material causes deformation of the parts, resulting in the dimensions and shape tolerances exceeding the design requirements, and causing the parts to be scrapped. The existing technology increases the process and cost through rough processing and finishing separation.
The same processing allowance is reserved on the top and bottom surfaces of the part blank. By setting up multiple stress relief grooves and raised structures, a hedge balanced stress effect is formed, so that the stress in the material can be controlled to achieve balance during the processing process.
The deformation amount of parts after processing is greatly reduced, and the deformation amount is reduced by 5 to 10 times compared to conventional processing processes, reducing costs and improving processing accuracy.
Smart Images
Figure CN119973677A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of mechanical parts processing, and in particular to a hedging processing part blank and a process for reducing mechanical processing stress deformation. Background Art
[0002] As the requirements for the precision of size and shape tolerance of modern mechanical parts processing become higher and higher, the internal stress of the material generated during the surface machining process will cause the parts to deform, and the size and shape tolerance will exceed the design requirements of the drawing, resulting in the scrapping of the parts. In actual production, in order to avoid this result, the roughing and finishing are usually separated, that is, the parts are stopped for a certain period of time after rough machining to release the stress naturally, and then clamped on the machine tool again for finishing. This method is not only inefficient, but also increases costs due to the increase in processes.
[0003] Therefore, a hedging processing part blank and process that reduces machining stress deformation has become an urgent problem to be solved by the entire society. Summary of the invention
[0004] In order to solve the above technical problems, the technical solution provided by the present invention is: a hedging processing part blank and process for reducing mechanical processing stress deformation, a plurality of stress release grooves are arranged at the top of the part blank, and the stress release grooves include a first release groove, a second release groove and a third release groove. The first release groove and the third release groove are arranged at both ends of the part blank, and the two are distributed in a symmetrical structure. The second release groove is arranged between the first release groove and the third release groove.
[0005] Furthermore, a first protrusion is arranged before the first release groove and the second release groove, and a second protrusion is arranged between the second release groove and the third release groove, and the first protrusion and the second protrusion form a clamping position at the bottom of the blank.
[0006] Furthermore, the first protrusion and the second protrusion are arranged at the bottom end of the part blank and are integrally formed with the part blank.
[0007] A hedging process for reducing mechanical processing stress deformation includes the following process steps:
[0008] When ordering a part blank, reserve machining allowance on the top and bottom surfaces of the part blank;
[0009] 2. The machining allowance reserved on the top surface of the blank is the same as the machining allowance reserved on the bottom surface, and the machining stress plays a role in offsetting and balancing the stress.
[0010] The advantages of the invention compared with the prior art are:
[0011] The present invention reserves the same machining allowance on the top and bottom surfaces of the blank, controls the stress from the beginning of customizing the blank material, and basically balances the internal stress of the material during the machining process, greatly reducing the deformation of the part after machining, which is 5 to 10 times less than that of conventional machining processes. In addition, there is no need to separate the rough machining and fine machining processes, and the machining can be completed in one go to reduce costs.
[0012] The invention can effectively improve processing accuracy, reduce costs, and has a good anti-deformation effect on easily deformable materials such as plastics and stainless steel. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of a hedging processing part blank for reducing mechanical processing stress deformation according to the present invention;
[0014] Figure 2 It is a bottom schematic diagram of a hedging processing part blank for reducing mechanical processing stress deformation according to the present invention;
[0015] Figure 3 The top surface schematic diagram of a hedging processing part blank for reducing machining stress deformation according to the present invention.
[0016] Among them, 1 is a stress release groove, 1-1 is a first release groove, 1-2 is a second release groove, 1-3 is a third release groove, 1-4 is a first protrusion, and 1-5 is a second protrusion. DETAILED DESCRIPTION
[0017] The present invention is further described in detail below in conjunction with the accompanying drawings.
[0018] The present invention is described in detail with reference to the accompanying drawings.
[0019] The present invention provides a hedging processing part blank and process for reducing mechanical processing stress deformation in a specific implementation. A plurality of stress release grooves 1 are arranged at the top of the part blank. The stress release grooves 1 include a first release groove 1-1, a second release groove 1-2 and a third release groove 1-3. The first release groove 1-1 and the third release groove 1-3 are arranged at both ends of the part blank, and the two are distributed in a symmetrical structure. The second release groove 1-2 is arranged between the first release groove 1-1 and the third release groove 1-3.
[0020] As a further elaboration of the present invention, a first protrusion 1-4 is arranged before the first release groove 1-1 and the second release groove 1-2, and a second protrusion 1-5 is arranged between the second release groove 1-2 and the third release groove 1-3, and the first protrusion 1-4 and the second protrusion 1-5 form a bottom clamp of the blank.
[0021] As a further elaboration of the present invention, the first protrusion 1-4 and the second protrusion 1-5 are arranged at the bottom end of the part blank and are integrally formed with the part blank.
[0022] As a further elaboration of the present invention, gaps are provided between the first protrusion 1-4 and the first release groove 1-1 and the second release groove 1-2 on both sides, and gaps are provided between the second protrusion 1-5 and the second release groove 1-2 and the third release groove 1-3 on both sides, and the gap length is 0.3-1mm.
[0023] Example
[0024] like Figure 1 As shown in the figure, a 3mm machining allowance is reserved on the top surface of the part blank, and a 3mm machining allowance is also reserved on the bottom surface of the part blank. In this way, when the part blank is processed, the machining allowances on the top and bottom surfaces are equal, and the machining stress plays a role in offsetting and balancing the stress.
[0025] Moreover, a plurality of stress release grooves 1 are arranged at the top of the part blank, and the stress release grooves 1 include a first release groove 1-1, a second release groove 1-2 and a third release groove 1-3, that is, the part is stopped for a certain period of time after rough machining to release stress by natural aging, and then clamped on the machine tool again for fine machining. This method is not only inefficient but also increases costs due to the increase in processes.
[0026] When the part blank is subjected to processing force, the release groove at the bottom is in a suspended state, which plays a role in buffering and releasing stress.
[0027] This embodiment controls stress starting from customizing the part blank, so that the stress inside the material is basically balanced during the processing, greatly reducing the deformation of the part after processing.
[0028] A hedging process for reducing mechanical processing stress deformation includes the following process steps:
[0029] When ordering a part blank, reserve machining allowance on the top and bottom surfaces of the part blank;
[0030] 2. The machining allowance reserved on the top surface of the blank is the same as the machining allowance reserved on the bottom surface, and the machining stress plays a role in offsetting and balancing the stress.
[0031] As a further elaboration of the present invention, in step 1, the machining allowance reserved on the top surface of the blank is 2-3 mm.
[0032] As a further explanation of the present invention, in step 1, the machining allowance reserved on the bottom surface of the blank is 2-3 mm.
[0033] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.
Claims
1. A hedging processing part blank for reducing mechanical processing stress deformation, characterized in that: A plurality of stress release grooves (1) are arranged at the top end of a part blank, the stress release grooves (1) comprising a first release groove (1-1), a second release groove (1-2) and a third release groove (1-3), the first release groove (1-1) and the third release groove (1-3) being arranged at two ends of the part blank and being distributed in a symmetrical structure, and the second release groove (1-2) being arranged between the first release groove (1-1) and the third release groove (1-3).
2. The hedging processing part blank for reducing machining stress deformation according to claim 2 is characterized in that: A first protrusion (1-4) is arranged before the first release groove (1-1) and the second release groove (1-2), a second protrusion (1-5) is arranged between the second release groove (1-2) and the third release groove (1-3), and the first protrusion (1-4) and the second protrusion (1-5) form a bottom clamp of the blank.
3. The hedging processing part blank for reducing machining stress deformation according to claim 1 is characterized in that: The first protrusion (1-4) and the second protrusion (1-5) are arranged at the bottom end of the part blank and are integrally formed with the part blank.
4. The hedging processing part blank for reducing machining stress deformation according to claim 3 is characterized in that: Gaps are provided between the first protrusion (1-4) and the first release groove (1-1) and the second release groove (1-2) on both sides, and gaps are provided between the second protrusion (1-5) and the second release groove (1-2) and the third release groove (1-3) on both sides, and the gap length is 0.3-1 mm.
5. A hedging process for reducing mechanical processing stress and deformation, characterized in that: The process steps include: (1) When ordering part blanks, reserve machining allowance on the top and bottom surfaces of the part blanks; (2) The machining allowance reserved on the top surface of the blank is the same as the machining allowance reserved on the bottom surface, and the machining stress plays a role in offsetting and balancing the stress.
6. The hedging process for reducing mechanical processing stress and deformation according to claim 5, characterized in that: In the step (i), the machining allowance reserved on the top surface of the blank is 2-3 mm.
7. The hedging process for reducing mechanical processing stress and deformation according to claim 5, characterized in that: In the step (i), the machining allowance reserved on the bottom surface of the blank is 2-3 mm.