Pneumatic clamping device for powder metallurgy insert
By designing a pneumatic clamping device for powder metallurgy inserts, the pneumatic push block drives the clamping insert expansion is solved, and the problems of unstable shaping size and difficulty in debugging of powder metallurgy inserts are achieved, and an efficient and fast shaping process and low-cost production efficiency are achieved.
Patent Information
- Application Number
- CN202422087364.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-27
AI Technical Summary
In the existing powder metallurgical insert shaping technology, the large sintering deformation leads to unstable shaping size, and the plastic mold input is high and the debugging is difficult, so it is impossible to quickly switch the production line.
A pneumatic clamping device for powder metallurgy inserts is designed, including a base plate, a pneumatic assembly and a clamping assembly. The clamping insert is driven to expand outward through the pneumatic push block, achieving the clamping effect of the insert center distance dimension.
The device can reduce the number of plastic surgery, improve rework efficiency, increase the time by half, save fixture design and production costs, quickly switch products, and do not occupy more equipment resources.
Smart Images
Figure CN223011899U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of powder metallurgy fixtures, and particularly to a pneumatic clamping and rectifying device for powder metallurgy inserts. Background Art
[0002] The application of metal powder injection molding parts in automotive equipment has relatively strict requirements. For the phenomenon of deformation of metal injection molding parts after high-temperature sintering, a rectifying process is required to correct them so that they meet the design dimension requirements. During the research and development, it is encountered that the sintering deformation is large, resulting in unstable rectifying dimensions. At present, the rectifying of powder metallurgy inserts mainly uses a hydraulic press and a rectifying die to rectify the rack. Due to different deformation amounts, it cannot be rectified in place at one time, the investment in the rectifying die is relatively high, and at the same time, it is necessary to occupy the hydraulic press; for different models of products, it is necessary to replace the rectifying die inserts, and the debugging difficulty is large and the debugging time is long.
[0003] Therefore, it is necessary to develop a pneumatic clamping and rectifying fixture for powder metallurgy inserts to clamp and rectify products with poor dimensions. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a pneumatic clamping and rectifying device for powder metallurgy inserts to solve the problems put forward in the above background art.
[0005] To achieve the above purpose, the utility model provides the following technical solution: A pneumatic clamping and rectifying device for powder metallurgy inserts, including a bottom plate, a pneumatic component and a clamping and rectifying component. Installation holes that can be fixed on the workbench are provided at the four corners of the bottom plate. The pneumatic component is installed at the upper end of the bottom plate. The pneumatic component has a cylinder, a pneumatic baffle, a pneumatic push block and a fixing plate. The cylinder is fixed at the middle position of the end face of the bottom plate, and pneumatic baffles are vertically installed on both sides of the cylinder; the fixing plate can be fixed on the upper end of the pneumatic baffle by screws, the fixing plate is vertically arranged relative to the pneumatic baffle, and a through hole for the pneumatic push block to pass through is provided in the middle of the fixing plate.
[0006] Preferably, the clamping and rectifying component includes a limiting plate, a clamping and rectifying insert and a powder metallurgy insert. The limiting plate is located above the fixing plate, and its four corners can be connected to the fixing plate by screws. An insert groove is provided in the middle of the limiting plate.
[0007] Preferably, the clamping and rectifying insert can be installed in the insert groove. An insert slot is provided in the middle of the side of the clamping and rectifying insert, and the powder metallurgy insert can be installed on the clamping and rectifying insert and limited in the insert slot.
[0008] Preferably, the pneumatic push block is sleeved on the front end of the piston rod of the cylinder. The cross section of the pneumatic push block is in an inverted T shape, and a pushing tip is provided at its front end.
[0009] Preferably, the pushing tip can pass through the fixing plate and the limiting plate and extend into the insert groove to cooperate with the clamping insert. When the air cylinder is started, the pneumatic pushing block can move upward to push the clamping insert and expand the clamping insert outward to achieve the effect of enlarging the center distance dimension of the insert.
[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0011] 1. The present utility model can reduce the number of shaping times, improve the rework efficiency of multiple shaping, double the time, and further solve the problem of low efficiency in the secondary shaping process.
[0012] 2. The present utility model does not need to design special clamping for different products. Only inserts need to be designed according to the product structure and size, saving the cost of fixture design and production.
[0013] 3. The present utility model can switch products more quickly. It does not need to replace the bottom plate and reposition the fixture. Only the insert needs to be replaced to put it into use, that is, the production line can be quickly switched, and it does not need to occupy a large amount of equipment resources. Description of the Drawings
[0014] Figure 1 is an exploded view of the structure of the present utility model;
[0015] Figure 2 is an overall view of the structure of the present utility model.
[0016] In the figure: 1, bottom plate; 2, air cylinder; 3, pneumatic baffle; 4, pneumatic pushing block; 5, fixing plate; 6, limiting plate; 7, clamping insert; 8, powder metallurgy insert. Detailed Embodiment
[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0018] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.
[0019] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0020] Please refer to Figure 1-2 , the present utility model provides a technical solution: a pneumatic clamping and rectifying device for powder metallurgy inserts, including a base plate 1, a pneumatic component, and a clamping and rectifying component. Among them, mounting holes for fixing on the workbench are provided at the four corners of the base plate 1. The pneumatic component is installed at the upper end of the base plate 1. The pneumatic component has a cylinder 2, a pneumatic baffle 3, a pneumatic push block 4, and a fixing plate 5. The cylinder 2 is fixed at the middle position of the end face of the base plate 1, and pneumatic baffles 3 are arranged vertically on both sides of the cylinder 2; the fixing plate 5 can be fixed to the upper end of the pneumatic baffle 3 by screws, the fixing plate 5 is vertically arranged relative to the pneumatic baffle 3, and a through hole for the pneumatic push block 4 to pass through is provided in the middle of the fixing plate 5.
[0021] In this embodiment, the clamping and rectifying component includes a limiting plate 6, a clamping and rectifying insert 7, and a powder metallurgy insert 8. Among them, the limiting plate 6 is located above the fixing plate 5 and its four corners can be connected to the fixing plate 5 by screws. An insert groove is provided in the middle of the limiting plate 6.
[0022] In this embodiment, the clamping and rectifying insert 7 can be installed in the insert groove. An insert groove is provided in the middle of the side of the clamping and rectifying insert 7, and the powder metallurgy insert 8 can be installed on the clamping and rectifying insert 7 and limited in the insert groove.
[0023] In this embodiment, the pneumatic push block 4 is sleeved on the front end of the piston rod of the cylinder 2. The cross section of the pneumatic push block 4 is in an inverted T shape and a push tip is provided at its front end.
[0024] In this embodiment, the push tip can pass through the fixing plate 5 and the limiting plate 6 and extend into the insert groove to cooperate with the clamping and rectifying insert 7. The pneumatic push block 4 can move upward when the cylinder 2 is started to push the clamping and rectifying insert 7 and expand the clamping and rectifying insert 7 outward to achieve the effect of increasing the center distance dimension of the insert.
[0025] In this embodiment, the clamping and rectifying insert 7 and the limiting plate 6 are made of DC53 steel material with high hardness and good wear resistance, and the pneumatic baffle 3 is made of Cr12 die steel.
[0026] Installation and usage instructions:
[0027] During installation: Fix the base plate 1 together with the cylinder 2 and the pneumatic baffle 3 using screws. Then, slip the fixing plate 5 over the pneumatic push block 4 and fix it to the pneumatic baffle 3 with screws. Next, place the clamping insert 7 inside the limit plate 6 and fix it to the fixing plate 5. Then, place the powder metallurgy insert 8 on the clamping insert 7 to complete the installation.
[0028] During use, start the air switch controlling the cylinder 2. The piston of the cylinder 2 drives the pneumatic push block 4 to push the clamping insert 7, thereby expanding the insert outward to achieve the effect of increasing the center distance dimension of the insert. Close the air switch, and the piston of the cylinder 2 resets. Remove the insert and place it in the material box.
[0029] Due to the large sintering deformation of the insert, after sizing with a complete sizing die, there will be some products with undersized dimensions after sizing. At this time, we need to adjust the position of the clamping insert 7 according to the production sizing deformation to adjust the clamping effect. There is no need to replace other parts, making the debugging and line change very fast and flexible, with low fixture manufacturing cost and high production efficiency.
[0030] It should be noted that: During the debugging and production use of the above fixture, it is necessary to confirm the center distance dimension of the insert after clamping.
[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A pneumatic clamping device for powder metallurgy inserts, characterized in that: The invention comprises a base plate (1), a pneumatic assembly and a clamping assembly, wherein the base plate (1) is provided with mounting holes at four corners for being fixed on a workbench, the upper end of the base plate (1) is provided with a pneumatic assembly, the pneumatic assembly comprises a cylinder (2), a pneumatic baffle (3), a pneumatic push block (4) and a fixing plate (5), the cylinder (2) is fixed at the middle position of the end face of the base plate (1), and pneumatic baffles (3) arranged vertically are arranged on both sides of the cylinder (2); the fixing plate (5) can be fixed to the upper end of the pneumatic baffle (3) by screws, the fixing plate (5) is arranged vertically relative to the pneumatic baffle (3), and a through hole for the pneumatic push block (4) to pass through is arranged in the middle of the fixing plate (5).
2. A pneumatic clamping device for powder metallurgy inserts according to claim 1, characterized in that: The clamping assembly comprises a limit plate (6), a clamping insert (7) and a powder metallurgy insert (8), wherein the limit plate (6) is located on the upper side of the fixing plate (5) and its four corners can be connected to the fixing plate (5) by screws, and an insert groove is provided in the middle of the limit plate (6).
3. A pneumatic clamping device for powder metallurgy inserts according to claim 2, characterized in that: The clamping insert (7) can be installed in an insert groove. An insert groove is provided in the middle of the side of the clamping insert (7). The powder metallurgy insert (8) can be installed on the clamping insert (7) and limited in the insert groove.
4. The pneumatic clamping device for powder metallurgy inserts according to claim 1, characterized in that: The pneumatic push block (4) is sleeved on the front end of the piston rod of the cylinder (2); the cross section of the pneumatic push block (4) is in an inverted T shape and a push tip portion is provided at the front end.
5. A pneumatic clamping device for powder metallurgy inserts according to claim 4, characterized in that: The push tip portion can pass through the fixing plate (5) and the limiting plate (6) to extend into the insert groove and cooperate with the clamping insert (7). When the cylinder (2) is started, the pneumatic push block (4) can push the clamping insert (7) upward and expand the clamping insert (7) outward.