Slots of connection terminals and processing technology of connection terminals
Through cold heading process and mechanical processing, the connecting terminal slots are processed to form a chamfered structure, which solves the problems of low saw blade processing efficiency and pin wear in the prior art, and achieves efficient and low-cost slot processing and long-life electrical performance of pins.
Patent Information
- Application Number
- CN202411961319.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-04-01
AI Technical Summary
In the existing slot processing technology of connecting terminals, the use of saw blades leads to material damage, low production efficiency, high cost, and sharp corners formed in the inner edges of the slots, resulting in pin wear and damage to the electroplating layer, affecting electrical performance.
The blank is processed using cold heading process to form an appearance, inner holes and slots that meet the requirements, and chamfers are formed at the inner edges of the slots. The shape and surface of the slots are further optimized through mechanical processing and stamping processes.
It improves slot processing efficiency, reduces equipment investment and production costs, extends the service life of the pins, and maintains its electrical performance.
Smart Images
Figure CN119742602A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of connectors, and in particular to a slot of a connecting terminal and a processing technology of the connecting terminal. Background Art
[0002] like Figure 1 As shown, Figure 1 The figure is a schematic diagram of the three-dimensional structure of the connecting terminal. The connecting terminal has a plurality of slots 4. The current processing technology for the slots 4 is as follows: the blank is processed into inner and outer circles, and then the slots 4 are cut out using a saw blade. In this process, since the connecting terminal is usually made of copper material with extremely high conductivity, the hardness of the material is low. If the saw blade feed speed is increased, the temperature of the saw blade rises rapidly, which will cause it to be easily damaged. Therefore, the saw blade feed speed can only be reduced, which not only reduces production efficiency, but also requires multiple devices to be invested in synchronous operation in order to increase production volume, which also increases production costs.
[0003] In addition, it is impossible to form a rounded corner at the inner edge of the slot 4 by using a saw blade processing method. What is formed is a sharp-angle structure. When in use, after the pin is inserted, the sharp corner at the inner edge will rub against the pin, causing the pin to be scratched and copper exposed, and the electroplating layer of the pin is damaged, thereby accelerating the corrosion of the pin and affecting its electrical performance. Summary of the invention
[0004] In view of the deficiencies of the prior art, the present invention provides a slot for a connecting terminal and a processing technology for the connecting terminal.
[0005] The present invention discloses a slot processing process for a connection terminal, comprising: Obtaining corresponding blanks; The blank is processed into a specified shape by a cold heading process to form a first semi-finished product; An inner hole is machined on the first semi-finished product by a cold heading process to form a second semi-finished product; A plurality of grooves are processed simultaneously on the second semi-finished product through a cold heading process, and chamfers are simultaneously formed at the inner edges of the plurality of grooves.
[0006] According to an embodiment of the present invention, the second semi-finished product is rough-machined and fine-machined by cold heading to form the groove.
[0007] According to an embodiment of the present invention, processing into a specified outer shape includes: processing the outer size and outer shape of the blank by a cold heading process.
[0008] According to an embodiment of the present invention, the external shape includes a front section, a rear section and a flange structure.
[0009] According to an embodiment of the present invention, the method further comprises: performing burr treatment on each slot by using a stamping process.
[0010] The present invention discloses a processing technology for a connecting terminal, comprising: Obtaining corresponding blanks; The blank is processed into a specified shape by a cold heading process to form a first semi-finished product; An inner hole is machined on the first semi-finished product by a cold heading process to form a second semi-finished product; A plurality of grooves are processed synchronously on the second semi-finished product by a cold heading process, and chamfers are formed synchronously at the inner edges of the plurality of grooves to form a third semi-finished product; The outer surface of the third semi-finished product is processed by mechanical processing.
[0011] According to an embodiment of the present invention, machining the outer surface of the third semi-finished product by mechanical machining includes: machining a notch on the outer surface of the third semi-finished product in a machine tool.
[0012] According to one embodiment of the present invention, machining the outer surface of the third semi-finished part by mechanical machining further includes: performing outer circle machining on the third semi-finished part in a machine tool so that the groove is exposed on the outer surface of the third semi-finished part.
[0013] According to an embodiment of the present invention, the method further includes: performing outer circle processing on the third semi-finished product by a stamping process, so that the groove is exposed on the outer surface of the third semi-finished product.
[0014] According to an embodiment of the present invention, machining the outer surface of the third semi-finished product by mechanical machining further includes: machining the plane, holes and threads of the third semi-finished product in a machine tool.
[0015] The beneficial effects of the present invention are as follows: the blank is processed by a cold heading process, and the cold heading process can process the required shape, inner hole and slot, and while processing multiple slots, a chamfer is formed at the inner edge of each slot. This method can form multiple slots at one time, shorten the slot processing time, and at the same time, improve the slot processing efficiency, thereby reducing equipment investment and achieving the effect of reducing costs; in addition, during use, the chamfer formed at the inner edge of the slot can reduce the wear on the pin, thereby solving the problem of damage to the electroplating layer of the pin and accelerated corrosion, thereby extending the service life of the pin without affecting its electrical performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 is a schematic diagram of the three-dimensional structure of the connection terminal; Figure 2 It is a flow chart of the processing technology of the slot 4 of the connection terminal; Figure 3 The product obtained by the processing technology of slot 4 of the connection terminal; Figure 4 for Figure 3 A partial structural diagram of the product; Figure 5 for Figure 3 A partial structural enlarged schematic diagram of the product; Figure 6 is a flow chart of the processing technology of the connection terminal; Figure 7 This is one of the schematic diagrams of the product obtained by the processing technology of the connection terminal; Figure 8 The second schematic diagram of the product obtained by the processing technology of the connection terminal; Fig. 9 The third schematic diagram of the product obtained by the processing technology of the connection terminal; Fig.10 The fourth schematic diagram of the product obtained by the processing technology of the connection terminal.
[0017] Description of Reference Numerals 1. Front section; 2. Rear section; 3. Flange structure; 4. Slot position; 5. Inner edge; 6. Notch; 7. Outer circle structure; 8. Plane; 9. Hole position; 10. Thread; 11. Inner hole. DETAILED DESCRIPTION
[0018] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.
[0019] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.
[0020] Embodiment 1 like Figure 2-Figure 5 As shown, Figure 2 It is a flow chart of the processing technology of the slot 4 of the connection terminal; Figure 3 The product obtained by the processing technology of slot 4 of the connection terminal; Figure 4 for Figure 3 A partial structural diagram of the product; Figure 5 for Figure 3 In order to better illustrate the processing technology of the slot 4 of the connection terminal of this embodiment, an actual connection terminal product will be introduced in the following description.
[0021] The processing technology of the slot 4 of the connection terminal of this embodiment includes: The corresponding blank is obtained, wherein the blank is a cylindrical copper material. In practice, a certain length of blank can be stored in a coiled form. When the connecting terminal product shown in the figure needs to be produced, the corresponding amount of blank is obtained according to the weight and required length of the connecting terminal, that is, the blank of the required length is obtained, and the blank in the coiled form is cut.
[0022] The obtained blank is processed, wherein the blank is processed into a desired shape by cold heading to form a first semi-finished product. Further, the shape processed by cold heading refers to the shape processed into the desired external dimensions and external shape; as Figure 3 The connecting terminal structure shown in the figure is firstly formed by extending the blank through the cold heading process so that the length of the blank meets the required design size; then, the required external shape is processed through the cold heading process, and the external shape includes a front section 1, a rear section 2 and a flange structure 3, and the front section 1 and the rear section 2 are respectively located on both sides of the flange structure 3. Specifically, the front section 1 is cylindrical, and the rear section 2 is formed by flattening the upper and lower sides of the cylindrical structure, that is, the upper and lower sides of the rear section 2 are both flat surfaces.
[0023] The inner hole 11 of the first semi-finished product is processed by cold heading to form a second semi-finished product; specifically, the inner hole 11 is located in the middle of the front section 1, but the inner hole 11 does not penetrate the flange structure 3. In actual use, the inner hole 11 will serve as a plug hole for connecting terminal products to facilitate the insertion of external pins.
[0024] The second finished product is processed with multiple slots 4 by cold heading, and chamfers will be formed at the inner edges 5 of the slots 4 as the multiple slots 4 are processed. Specifically, the processing of the multiple slots 4 can be performed individually or in two steps. Of course, the multiple slots 4 can also be processed at one time in conjunction with a contoured component. In this embodiment, multiple slots 4 are processed and formed at one time by cold heading to improve the processing effect of the slots 4. In addition, the cold heading process does not need to consider the problem of damage to the processed parts. Therefore, it is only necessary to process the slot 4 structure on the second semi-finished product according to the specified processing depth. Furthermore, in order to improve the machining accuracy of the slot 4 and the service life of the slot 4 machining parts, the present embodiment will adopt a combination of rough machining and fine machining to machine the slot 4. Specifically, rough machining refers to machining a portion of the required depth of the slot 4 first, for example, machining a slot 4 of half the depth first, at which time the slot 4 still does not meet the final design depth requirement; fine machining refers to further machining the slot 4 after rough machining, so that the depth of the machined slot 4 meets the final design depth requirement. Compared with the existing saw blade machining slot 4, the saw blade machining slot 4 requires a slower entry speed, and the saw blade machining slot 4 can only machine a single slot independently, and multiple slots 4 cannot be machined together. In comparison, the present embodiment adopts a cold heading process for machining, which can realize the machining of multiple slots 4 together, and the machining speed problem of the machining parts can be ignored, and its production efficiency is greatly improved. In practice, the slot 4 processed by the saw blade has many burrs, and a grinding process needs to be added later. Moreover, since the slot 4 is located inside the inner hole 11, the difficulty of grinding increases. This not only takes more time, but also affects the quality of the final terminal product. In comparison, the cold heading process is adopted in this embodiment, and the slot 4 processed by it has very few burrs, which saves the grinding process, further improves its production efficiency and reduces costs.
[0025] In another embodiment, in order to further improve the quality of the connection terminal product, a stamping process is used to perform burr treatment on each slot 4. Similarly, the stamping process can perform burr treatment on multiple slots 4 at one time.
[0026] In summary, the blank is processed by cold heading process, and the cold heading process can process the required shape, inner hole 11 and slot 4. When multiple slots 4 are processed, chamfers will be formed at the inner edge 5 of each slot 4. This method can form multiple slots 4 at one time, shorten the processing time of the slot 4, and at the same time, improve the processing efficiency of the slot 4, thereby reducing equipment investment and reducing costs. In addition, during use, the chamfer formed at the inner edge 5 of the slot 4 can reduce the wear on the pin, thereby solving the problem of damage to the electroplating layer of the pin and accelerated corrosion, thereby extending the service life of the pin without affecting its electrical performance.
[0027] Embodiment 2 like Figure 6-Figure 10 As shown, Figure 6 is a flow chart of the processing technology of the connection terminal; Figure 7 This is one of the schematic diagrams of the product obtained by the processing technology of the connection terminal; Figure 8 The second schematic diagram of the product obtained by the processing technology of the connection terminal; Fig. 9 The third schematic diagram of the product obtained by the processing technology of the connection terminal; Fig.10 The fourth schematic diagram of the product obtained by the processing technology of the connection terminal. This embodiment is to process a complete connection terminal product, which includes the structure of the slot 4, and the process of processing the slot 4 will adopt the method introduced in the first embodiment.
[0028] A processing technology of a connecting terminal in this embodiment includes: The third semi-finished product produced by the processing technology of the first embodiment, that is, the third semi-finished product has been processed with the shape, the inner hole 11 and the plurality of slots 4, as shown in FIG. Figure 3 The structure shown.
[0029] The outer surface of the third semi-finished product is processed by mechanical processing. It should be noted that the mechanical processing method refers to the existing machine tool technology, such as cutting the outer surface of the third semi-finished product with a corresponding tool on a machine tool. Of course, there may be other processing steps, and only the corresponding machine tool needs to be used. Since the machine tool technology of this part is an existing process, it will not be introduced in detail here.
[0030] Furthermore, the outer surface of the third semi-finished product is processed by mechanical processing, which step includes: processing notches 6 on the outer surface of the third semi-finished product in a machine tool, and the number and shape of the notches 6 can be determined according to the preliminary design requirements. Figure 3 and Figure 7 The comparison clearly shows that Figure 7 The outer surface of the product has a plurality of notches 6, and the plurality of notches 6 are all machined on a machine tool.
[0031] Furthermore, the outer surface of the third semi-finished product is processed by mechanical processing, and this step also includes: performing outer circle processing on the third semi-finished product with multiple notches 6 in a machine tool, so that multiple slots 4 are exposed on the outer surface of the third semi-finished product. For details, please review Figure 7 and Figure 8 , Figure 8 The product structure presented in Figure 7 The product structure presented is based on the external cylindrical processing. Figure 7 It can be seen from the presented product structure that, before the outer circle processing is performed, the outer circumference of one end of the inner hole 11 and the middle section of the front section 1 both have the outer circle structure 7, and the outer circle structure 7 prevents the groove 4 from being completely exposed on the outer surface of the third semi-finished product; the outer circle structures 7 at these two locations are processed by the machine tool until all the grooves 4 can be exposed on the outer surface of the third semi-finished product (such as Figure 7 product structure shown).
[0032] Furthermore, the outer surface of the third semi-finished product is processed by mechanical processing, and this step also includes: plane processing of the third semi-finished product that has been processed by the outer circle in the machine tool. For details, please review Figure 8 and Fig. 9 , Fig. 9 The product structure presented in Figure 8 The rear section 2 is plane-processed based on the product structure presented. Specifically, the upper and lower sides of the rear section 2 are both flat planes. At this time, the flat plane of the upper side is plane-processed based on the flat plane of the lower side, and then the Fig. 9 The plane 8 on the upper side of the rear section 2 shown is used to plane-process the overall depth of the rear section 2 so that it meets the final design depth requirement.
[0033] Furthermore, the outer surface of the third semi-finished product is processed by mechanical processing, and this step also includes: processing the hole position 9 of the third semi-finished product that has been plane-processed in a machine tool. For details, please review Fig. 9 and Fig.10 , Fig.10 The product structure presented in Fig. 9 The holes 9 are processed on the basis of the product structure presented. Specifically, the required holes 9 are processed on the plane 8 on the upper side of the rear section 2. Of course, the number and depth of the holes 9 can be adjusted according to needs, and no specific limitation is made here.
[0034] In addition, the outer surface of the third semi-finished product is processed by mechanical processing, and this step also includes: processing the thread 10 on the third semi-finished product that has been processed by the hole 9 in the machine tool. Fig.10 As shown, the required thread 10 is processed inside the hole 9. Of course, in practical applications, whether to add the thread 10 can be adjusted according to demand, that is, if the thread 10 is not needed, there is no need to perform the step of processing the thread 10.
[0035] Embodiment 3 The difference between this embodiment and the second embodiment is that: after the second semi-finished product is processed into a plurality of grooves 4 by cold heading, there is no need to use a stamping process to remove burrs, but the next process is entered, that is, a plurality of grooves 6 are processed on the outer surface of the third semi-finished product in a machine tool; after the plurality of grooves 6 are processed and formed, there is no need to perform external circle processing on the third semi-finished product having the grooves 6, but a stamping process is used to process the plurality of grooves 4 and the external circle structure 7. Specifically, a stamping component that imitates the shape of the third semi-finished product is used for stamping, which can not only remove a small amount of burrs in the plurality of grooves 4 at the same time, but also flush out the external circle structure 7. This method reduces the processing steps of the connection terminal product, which is conducive to further improving production efficiency and reducing costs.
[0036] Further explanation is given in conjunction with Example 2 and Example 3. Although Example 2 and Example 3 both introduce relevant processing steps of the notch 6, the outer circular structure 7, the plane 8, the hole 8 and the thread 10, the specific application is not limited to the above parts. In other words, the structure of the connecting terminal can be replaced in combination with the actual requirements. For example, the remaining conventional structures can be processed by mechanical processing.
[0037] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims
1. A slot processing technology for a connecting terminal, characterized in that: include: Obtaining corresponding blanks; The blank is processed into a specified shape by a cold heading process to form a first semi-finished product; An inner hole is machined on the first semi-finished product by a cold heading process to form a second semi-finished product; A plurality of grooves are processed simultaneously on the second semi-finished product through a cold heading process, and chamfers are simultaneously formed at the inner edges of the plurality of grooves.
2. The groove processing process of the connecting terminal according to claim 1, characterized in that: The second semi-finished product is rough-machined and fine-machined by cold heading to form the groove.
3. The groove processing technology of the connection terminal according to claim 1, characterized in that: Processing into the specified shape includes: processing the outer size and outer shape of the blank by cold heading process.
4. The groove processing process of the connection terminal according to claim 3, characterized in that: The external shape includes a front section, a rear section and a flange structure.
5. The groove processing process of the connecting terminal according to any one of claims 1 to 4, characterized in that: Also includes: Each slot is deburred using a stamping process.
6. A processing technology for a connection terminal comprising the slot processing technology according to any one of claims 1 to 5, characterized in that: include: Obtaining corresponding blanks; The blank is processed into a specified shape by a cold heading process to form a first semi-finished product; An inner hole is machined on the first semi-finished product by a cold heading process to form a second semi-finished product; A plurality of grooves are processed synchronously on the second semi-finished product by a cold heading process, and chamfers are formed synchronously at the inner edges of the plurality of grooves to form a third semi-finished product; The outer surface of the third semi-finished product is processed by mechanical processing.
7. The processing technology of the connecting terminal according to claim 6, characterized in that: Processing the outer surface of the third semi-finished product by mechanical processing includes: processing a notch on the outer surface of the third semi-finished product in a machine tool.
8. The processing technology of the connecting terminal according to claim 7, characterized in that: Processing the outer surface of the third semi-finished product by mechanical processing also includes: performing outer circle processing on the third semi-finished product in a machine tool so that the groove is exposed on the outer surface of the third semi-finished product.
9. The processing technology of the connecting terminal according to claim 6, characterized in that: Also includes: The third semi-finished product is processed externally by a stamping process, so that the groove is exposed on the outer surface of the third semi-finished product.
10. The processing technology of the connecting terminal according to claim 8 or 9, characterized in that: Processing the outer surface of the third semi-finished product by mechanical processing also includes: processing the plane, hole positions and threads of the third semi-finished product in a machine tool.