Groove structure forming cold heading die
By designing the groove structure forming cold heading mold and using stamping processing to replace the traditional milling method, it solves the problems of low processing efficiency and high production cost of parts with sinking groove structures in the traditional machining industry, and achieves efficient and low-cost processing effects.
Patent Information
- Application Number
- CN202420780571.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-16
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-04-16
AI Technical Summary
In the traditional mechanical processing industry, plate-shaped parts with sinker structures are inefficient in processing and high production costs, which cannot meet the market's requirements for delivery cycles.
Design a groove to form a cold mold mold, including lower pads, concave molds, unloading boards, fixing plates, upper pads, limited plates, punch, positioning nails and pushing blocks, using DC53 or SKD11 high -strength mold steel And 45#steel materials, replace traditional milling processing methods by stamping processing.
It greatly improves the efficiency of parts processing, avoids the occupation of high-precision equipment resources, reduces production costs, and can meet the market's delivery cycle requirements.
Smart Images
Figure CN222385838U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a groove structure forming cold heading die, belonging to the technical field of mechanical electronic processing. Background Art
[0002] In the field of process equipment manufacturing technology, the processing of slot structures on plate-shaped parts made of materials such as Kovar alloy and low-carbon steel has always been done by milling. By selecting a flat milling cutter of corresponding specifications for the slot structure of the part, rough milling and fine milling are performed to ensure the requirements of the size and roughness of the slot structure of the part. This type of traditional processing method has low processing efficiency, which is mainly reflected in the limited efficiency of the milling process, and the clamping process takes a certain amount of time. Compared with stamping and other methods, the processing efficiency is low, especially for large-volume parts processing, which will occupy a large amount of CNC milling machine equipment resources and have high production costs. With the continuous development of science and technology and the market, the pace of production has accelerated. This processing method is completely unable to meet the delivery cycle required by customers and is completely at a disadvantage in market competition. Utility Model Content
[0003] The utility model aims to solve the technical problem of low-cost and high-efficiency processing of plate-shaped parts with a sinking groove structure in the traditional mechanical processing industry.
[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0005] A groove structure forming cold heading die, comprising a lower pad, a die, a stripper plate, a fixed plate, an upper pad, a limit plate, a punch, a positioning pin and a push block; a die is installed above the lower pad, a push block is installed at the center of the die, and a positioning pin is provided above the push block; a fixed plate is installed below the upper pad, a limit plate is installed below the fixed plate, a stripper plate is installed below the limit plate, a punch is fixed at the center of the fixed plate, and the punch passes through the middle position of the limit plate and then passes through the upper part of the middle position of the stripper plate.
[0006] The length and width dimensions of the structural parts of the lower pad, the unloading plate, the fixing plate, the upper pad and the limiting plate are consistent.
[0007] The punch, die and push block are made of DC53 or SKD11 high-strength die steel.
[0008] The fixed plate, unloading plate, upper pad and lower pad are made of 45# steel.
[0009] The beneficial effects of adopting the above technical solution are:
[0010] Compared with the prior art, the mold provided by the utility model can realize the stamping processing groove structure, replace the traditional milling processing method, greatly improve the parts processing efficiency, avoid the occupation of high-precision equipment resources, and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a schematic diagram of the structure of a plate-like part with a sink structure.
[0012] Figure 2 for Figure 1 Top view.
[0013] Figure 3 This is a schematic diagram of the structure of the cold heading die for forming the groove structure of the utility model.
[0014] In the figure: 1-lower pad, 2-die, 3-unloading plate, 4-fixed plate, 5-upper pad, 6-limiting plate, 7-punch, 8-positioning pin, 9-push block.
[0015] Figure 4 for Figure 3 Schematic diagram of the concave die structure.
[0016] Figure 5 for Figure 4 Top view.
[0017] Figure 6 for Figure 3 Schematic diagram of the middle push block structure.
[0018] Figure 7 for Figure 6 Top view.
[0019] Figure 8 for Figure 3 Schematic diagram of the middle unloading plate structure.
[0020] Fig. 9 for Figure 8 Top view.
[0021] Fig.10 for Figure 3 Schematic diagram of the fixed plate structure.
[0022] Fig.11 for Fig.10 Top view.
[0023] Fig.12 for Figure 3 Schematic diagram of the structure of the middle limit plate.
[0024] Fig.13 for Fig.12 Top view.
[0025] Fig.14 for Figure 3 Schematic diagram of the middle punch structure.
[0026] Fig.15 for Fig.14 Top view.
[0027] Fig.16 for Figure 3 Schematic diagram of the middle and lower pad structure.
[0028] Fig.17 for Fig.16 Top view.
[0029] Fig.18 for Figure 3 Schematic diagram of the middle and upper pad structure.
[0030] Fig.19 for Fig.18 Top view.
[0031] Fig. 20 for Figure 3 Schematic diagram of the positioning pin structure. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0033] A groove structure forming cold heading die, such as Figure 3 As shown: it includes a lower pad 1, a die 2, a discharge plate 3, a fixing plate 4, an upper pad 5, a limit plate 6, a punch 7, a positioning pin 8 and a push block 9 and other common parts of the mold, wherein other common parts of the mold include common structural parts such as guide pins and mold frames, which only need to be selected according to the specific size of the parts, and this application will not discuss in detail; a die 2 is installed above the lower pad 1, a push block 9 is installed at the center of the die 2, and a positioning pin 8 is arranged above the push block 9. The lower pad 1 plays the role of closing the lower bottom surface of the cavity in the die 2, so that the push block 9 will not sink when subjected to force during the use of the mold, thereby ensuring the structural size of the part after cold heading, and the positioning pin 8 is used for positioning the part during cold heading processing; a A fixed plate 4 is provided with a limit plate 6 under the fixed plate 4, and a discharge plate 3 is provided under the limit plate 6. A punch 7 is fixed at the center position of the fixed plate 4. After the punch 7 passes through the middle position of the limit plate 6, it passes through the upper part of the middle position of the discharge plate 3. The discharge plate 3 plays a role of unloading. Due to the large force during the cold forging process, there will be a phenomenon of parts and punch adhesion. Therefore, it is necessary to design the discharge plate 3 to automatically remove the parts. The fixed plate 4 plays the role of fixing the punch 7. The upper pad 5 is used to close the middle cavity of the fixed plate 4, and together with the fixed plate 4 plays the role of fixing the punch 7. The limit plate 6 is used to limit the downward movement size of the upper die and control the cold forging amount. The punch 7 is used to upset the parts to form the required groove structure.
[0034] The above structural designs are all to ensure that the mold is easy to process, assemble and disassemble, which is a normal design method in the mold structure.
[0035] Structural parameters of this utility model:
[0036] Take a plate-shaped part with a length of 24mm, a width of 13.2mm, a thickness of 1.8mm, a groove structure of 23.4mm, a width of 12.6mm, and a groove depth of 0.2mm as an example. Figure 1 and Figure 2 As shown in the figure, the structural parameters of the designed groove structure cold heading die are as follows:
[0037] like Figure 4 , 5 As shown in , 6 and 7, the design size of the cavity of the die 2 (the angle of the inclined surface needs to be designed at about 9° after the test) and the push block 9 is 24mm*13.2mm, which can ensure that the outer size of the part after trimming is 24mm*13.2mm;
[0038] like Figure 8 , 9 As shown in Figures 10, 11, 12, 13, 14 and 15, the height difference between the push block 9 and the cavity of the die 2 is designed to be 1.45mm, the thickness of the unloading plate 3 is designed to be 12mm, the thickness of the limit plate 6 is designed to be 12mm, the thickness of the fixed plate 4 is designed to be 16mm, the length of the punch 7 is 39.45mm, and a 0.75mm deep cold heading groove is reserved on the unloading plate 3 to ensure that the groove depth is 19.45+0.75-12-12-16=0.2mm; the punch 7 is designed to be 23.4mm long and 12.6mm wide to ensure the groove structure size.
[0039] like Fig.16 , 17 As shown in 18, 19 and 20, the thickness of the upper pad 5 and the lower pad 1 can be designed according to the size of the mold frame. The thickness of this design is 6mm. Other positioning structures can be designed according to the specific structure of the parts. Other components can be selected from standard parts according to the mold requirements.
[0040] A design method for a groove structure cold heading die comprises the following steps:
[0041] Step 1: Design the die punch 7 based on the size of the groove structure on the plate-like part to be processed and the size of the inner cavity of the groove;
[0042] Step 2: Design the cavity of the die 2 and the push block 9 according to the outer dimensions of the groove of the plate-like part (i.e. the outer dimensions of the part, if the part has an inclined surface, the cavity of the die can be designed corresponding to the inclined surface);
[0043] Step 3: Design the thickness of the limit plate 6, the fixed plate 4 and the unloading plate 3 in combination with the part groove depth and the punch 7 size to ensure that the maximum cold heading amount is equal to the part groove depth;
[0044] Step 4: The upper pad 5 and the lower pad 1 are designed according to the size of the mold frame and the size of the above-mentioned structural parts; the size of the positioning pin 8 or other positioning structure is designed according to the part structure;
[0045] Step 5: The length and width of the cold heading die's lower pad 1, unloading plate 3, fixing plate 4, upper pad 5 and limit plate 6 are kept consistent. Other components in the die can be selected from standard parts according to requirements.
[0046] Each structure of the utility model can be processed by wire cutting medium and slow wire, and then ground and finely processed, and the processing method is simple.
[0047] The utility model is mainly used for plate parts made of materials such as Kovar alloy and low carbon steel. It only needs to match the holes on the parts with the positioning pins in the mold. If the parts have no hole structure, the shape can be used for positioning, and it only needs to design the cavity positioning structure.
[0048] After processing the plate-shaped parts with the groove structure, it is only necessary to design the trimming die according to the part structure to cut off the waste edge produced by cold heading. The trimming die has a simple structure and low manufacturing cost. The male and female dies can be designed according to the part's external dimensions and positioning. This application will not discuss this in detail. Figure 1 and Figure 2 As shown, the part hole structure can be processed by milling, drilling, stamping and other processing methods, which will not be discussed in detail in this application.
[0049] The utility model is mainly used for stamping cold heading processing, wherein the punch 7, the die 2, and the push block 9 are made of DC53 or SKD11 high-strength die steel; the fixed plate 4, the unloading plate 3, the upper pad 5 and the lower pad 1 are made of 45# steel.
[0050] In summary, plate-like parts can be processed and formed by a groove structure cold heading die in conjunction with a trimming die. Taking a plate-like part with a length of 24mm, a width of 13.2mm, a thickness of 1.8mm, a groove structure of 23.4mm, a width of 12.6mm, and a groove depth of 0.2mm as an example, after a large number of actual production and processing verification statistics, the total time consumption for cold heading + trimming is about 11s / piece, while the total time consumption for milling to form the groove structure of such parts is about 300s / piece. It can be seen that through the design and application of this patent, the processing efficiency is increased by more than 26 times.
[0051] In the description of the present utility model, it should be noted that the terms "above", "below", "upper part", "lower part" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, and are 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 cannot be understood as a limitation on the present utility model. In addition, the terms "provided with", "installed", "connected", and "connected" 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. 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.
Claims
1. A groove structure forming cold heading die, characterized in that: It comprises a lower pad (1), a die (2), a stripping plate (3), a fixing plate (4), an upper pad (5), a limiting plate (6), a punch (7), a positioning pin (8) and a push block (9); the lower pad (1) is provided with a die (2) above, a push block (9) is provided at the center of the die (2), and a positioning pin (8) is provided above the push block (9); the upper pad (5) is provided with a fixing plate (4), the fixing plate (4) is provided with a limiting plate (6), the stripping plate (3) is provided below the limiting plate (6), and a punch (7) is fixed at the center of the fixing plate (4); after the punch (7) passes through the middle of the limiting plate (6), it passes through the upper part of the middle of the stripping plate (3).
2. The groove structure forming cold heading die according to claim 1, characterized in that: The length and width dimensions of the structural components of the lower pad (1), the discharge plate (3), the fixed plate (4), the upper pad (5) and the limit plate (6) are consistent.
3. The groove structure forming cold heading die according to claim 1, characterized in that: The punch (7), the die (2) and the push block (9) are made of DC53 or SKD11 high-strength die steel.
4. The groove structure forming cold heading die according to claim 1, characterized in that: The fixed plate (4), the unloading plate (3), the upper pad (5) and the lower pad (1) are made of 45# steel.