A combined electrolysis device and electrolytic processing method thereof

Abstract

The application discloses a combined electrolytic device and an electrolytic processing method thereof. The combined electrolytic device comprises a shaping sleeve, a combined electrode, a clamp and a power supply system. The combined electrode is sleeved on the peripheral surface of the shaping sleeve, and the clamp is sleeved on the outer side of the combined electrode. The combined electrode comprises a plurality of basic electrodes. By adjusting the relative positions of the basic electrodes, the working surface of the combined electrode can correspond to the machining surface profile of the profiled piston pin hole, and a uniform gap is arranged between the working surface and the machining surface. The piston pin hole is filled with electrolyte, and the two poles of the power supply of the power supply system are connected with the piston pin hole and the combined electrode respectively. By adjusting the combined electrode composed of different electrodes, different sizes and shapes of workpieces can be adapted, the manufacturing cost of the tooling is low, the tooling is easy to maintain and manage, and the single-piece differential machining profile adjustment is convenient. The combined electrode is simple in structure, the switching operation is simple, and the assembly time is short. The electrolytic processing method has the advantages of short debugging time, high efficiency and good quality.

Description

Technical Field

[0001] This application relates to the field of conductive material processing technology, specifically to a combined electrolysis device and its electrolysis processing method. Background Technology

[0002] Pistons are key components in engines that convert chemical energy into kinetic energy. To withstand greater working pressure, stepped pin seats are increasingly used. Machining the piston pin holes with full-form internal chamfering or rounding is time-consuming and yields poor results; furthermore, machining requires high consistency in the workpiece's profile. Therefore, achieving high-quality, rapid internal chamfering or rounding of stepped pin seat pin holes has become a significant technical challenge in the industry.

[0003] Existing processing solutions require the use of machining centers or multi-axis linkage equipment, as well as 3D modeling and automatic machine programming. This results in long debugging times, long processing times, poor fillet or chamfer effects after processing, and high manufacturing costs.

[0004] Therefore, how to provide a method for easily machining the inner chamfer or rounding of piston pin holes is a problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this application is to provide a combined electrolysis device and electrolysis processing method, which can improve product processing efficiency and reduce production costs, and enable rapid switching between products with different processing surface contours and different hole sizes.

[0006] To achieve the above objectives, this application provides a combined electrolysis device, comprising: a shaping sleeve, a combined electrode, a clamp, and a power supply system; the combined electrode is sleeved on the circumferential surface of the shaping sleeve, and the clamp is sleeved on the outer side of the combined electrode;

[0007] The combined electrode consists of several basic electrodes. By adjusting the relative positions between the basic electrodes, the working surface of the combined electrode can correspond to the machining surface contour of the piston pin hole. The piston pin hole is filled with electrolyte, and the two power poles of the power supply system are connected to the piston pin hole and the combined electrode, respectively.

[0008] In some embodiments, a sloping trapezoidal working surface is provided at one end of the base electrode, and several base electrodes are arranged in parallel.

[0009] The sides of several basic electrodes are attached sequentially, and the end faces on the same side are attached to the circumferential surface of the shaping sleeve.

[0010] In some embodiments, the combined electrode further includes: an expanding electrode and a reducing electrode interposed between the base electrodes;

[0011] Both the expanding and contracting electrodes contract or expand along one end face to the other end face, and both the expanding and contracting electrodes have a slanted trapezoidal working surface at one end.

[0012] In some embodiments, both ends of the clamp are provided with protrusions, and the two protrusions are connected through a tightening bolt.

[0013] In some embodiments, the power cathode of the power supply system is connected to the combined electrode, and the power anode of the power supply system is connected to the outer surface of the piston pin hole.

[0014] An electrolytic machining method, applicable to the combined electrolytic apparatus of any of the above, includes: combining the combined electrode according to the machining surface of the piston pin hole, making the working surface of the combined electrode conform to the contour of the machining surface of the piston pin hole, and using the clamp to limit the combined electrode on the shaping sleeve;

[0015] The working surface of the combined electrode after being limited is set towards the machined surface of the piston pin hole, and a uniform gap is ensured between the two.

[0016] Fill the piston pin hole with electrolyte, then connect the combined electrode to the negative terminal of the power supply, and connect the outer surface of the piston pin hole to the positive terminal of the power supply.

[0017] In some embodiments, the step of assembling the combined electrode according to the machining surface of the piston pin hole, such that the working surface of the combined electrode conforms to the contour of the machining surface of the piston pin hole, and limiting the combined electrode on the shaping sleeve by the clamp includes:

[0018] Adjust the relative positions of several of the basic electrodes until the working surface shape of the combined electrode corresponds to the contour of the machined surface of the piston pin hole;

[0019] The sides of several of the base electrodes are sequentially attached together, and the same-side end face of the base electrodes is attached to the circumferential surface of the shaping sleeve, while the clamp is sleeved on the outside of the other end face of all the base electrodes.

[0020] In some embodiments, the step of adjusting the relative positions of several basic electrodes until the working surface shape of the combined electrode and the machining surface contour of the piston pin hole are conformed further includes:

[0021] Add expanding or shrinking electrodes between the base electrodes.

[0022] Compared to the aforementioned background technology, the combined electrolysis device of this application includes: a shaping sleeve, a combined electrode, a clamp, and a power supply system; the combined electrode is sleeved on the circumference of the shaping sleeve, and the clamp is sleeved on the outside of the combined electrode. The shaping sleeve is an annular sleeve, and the clamp tightens and limits the combined electrode to the outside of the shaping sleeve, forming an electrode ring. The combined electrode includes several basic electrodes. By adjusting the relative positions between the basic electrodes, the working surface of the combined electrode can correspond to the machining surface contour of the contoured piston pin hole, and a uniform gap is set between the working surface and the machining surface; the piston pin hole is filled with electrolyte, and the two poles of the power supply system are connected to the piston pin hole and the combined electrode respectively. By adjusting the composition of different combined electrodes, it can adapt to the various sizes, specifications, and shapes of different workpieces. The tooling has low manufacturing cost, is easy to maintain and manage, and facilitates the adjustment of individual piece differential machining contours. Moreover, the combined electrode structure is simple, the switching operation is simple, and the assembly time is short. Utilizing the electrolytic machining method, the debugging time is short, the efficiency is high, and the quality is good.

[0023] This application also provides an electrolytic processing method, which has the above-mentioned beneficial effects, and will not be elaborated further here. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1 A schematic diagram of the combined electrolysis device provided in the embodiment of this application, which is disposed in the piston pin hole;

[0026] Figure 2 This is a front view of the assembled combined electrodes provided in the embodiments of this application;

[0027] Figure 3 This is a top view of the assembled combined electrodes provided in the embodiments of this application;

[0028] Figure 4 This is a schematic diagram of the assembly of one of the base electrodes and the piston pin hole provided in an embodiment of this application;

[0029] Figure 5 This is a top view of the combined electrode provided in an embodiment of this application;

[0030] Figure 6 This is a top view of the combined electrode provided in the embodiments of this application after a reduced diameter electrode has been added;

[0031] Figure 7This is a top view of the combined electrode provided in the embodiments of this application after adding an expanded diameter electrode;

[0032] Figure 8 This is a flowchart illustrating the debugging steps of the electrolytic processing method provided in the embodiments of this application.

[0033] in:

[0034] 1-Shaping sleeve, 2-Combined electrode, 21-Basic electrode, 22-Reduced diameter electrode, 23-Expanded diameter electrode, 3-Clamp, 4-Tightening bolt, 5-Piston pin hole, 51-Inner chamfer of pin hole. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Reference manual attached Figure 1 - Appendix Figure 3 , attached Figure 1 This is a schematic diagram of the structure of the combined electrolysis device provided in the embodiment of this application, which is disposed in the piston pin hole. Figure 2 This is a front view of the assembled combined electrodes provided in the embodiments of this application. Figure 3 This is a top view of the assembled combined electrode provided in an embodiment of this application. The combined electrolysis device is applied to the machined surface of the piston pin hole 5 and includes: a shaping sleeve 1, a combined electrode 2, a clamp 3, and a power supply system. The combined electrode 2 is sleeved on the circumference of the shaping sleeve 1, and the clamp 3 is sleeved on the outside of the combined electrode 2. The shaping sleeve 1 is configured as an annular sleeve, and the clamp 3 tightens and limits the combined electrode 2 to the outside of the shaping sleeve 1, forming an electrode ring.

[0038] The aforementioned combined electrode 2 includes several basic electrodes 21. By adjusting the relative positions between the basic electrodes 21, the working surface of the aforementioned combined electrode 2 can be made to correspond to the machining surface contour of the aforementioned piston pin hole 5. The aforementioned piston pin hole 5 is filled with electrolyte, and the two power poles of the aforementioned power supply system are respectively connected to the aforementioned piston pin hole 5 and the aforementioned combined electrode 2.

[0039] The combined electrode 2 is shifted as a whole, so that its working surface faces the machining surface of the piston pin hole 5, ensuring a uniform gap between them. This uniform gap allows for high-precision contouring of the working surface of the combined electrode 2 and the workpiece machining surface. The purpose of this uniform gap is to ensure that there is a certain distance between the working surface of the combined electrode 2 and the machining surface during electrolytic machining. If the electrode comes into contact with the workpiece, it will cause a short circuit and burn out the electrode. The uniformity of the gap ensures the quality of the machining, i.e., the uniformity of the chamfer.

[0040] By adjusting the different combinations of electrodes 2, the system can adapt to various workpiece sizes, specifications, and shapes. The tooling has low manufacturing costs, is easy to maintain and manage, and facilitates adjustments to the profiles for individual workpiece machining. Furthermore, the electrode combination 2 has a simple structure, easy switching operations, and short assembly time. Utilizing electrolytic machining methods, the system offers short setup time, high efficiency, and good quality.

[0041] Further, refer to the attached instruction manual. Figure 4 and attached Figure 5 , Figure 4 This is a schematic diagram of the assembly of one of the basic electrodes and the piston pin hole provided in an embodiment of this application. Figure 5 This is a top view of the combined electrode provided in the embodiment of this application. One end of the base electrode 21 is provided with an inclined trapezoidal working surface, and several base electrodes 21 are arranged in parallel.

[0042] The sides of several of the aforementioned base electrodes 21 are sequentially attached, and the end faces on the same side are all attached to the circumference of the aforementioned shaping sleeve 1. The high-precision contour of the machining surface of the piston pin hole 5 is shaped by the inclined trapezoidal working surface, thereby forming a uniform gap between the cathode of the working surface of the combined electrode 2 and the anode of the machining surface of the piston pin hole 5. After energizing, the current density is consistent, and the electrolytic dissolution rate of the anode pin hole machining surface contour is consistent, ultimately forming a uniform inner chamfer 51 or rounded corner of the pin hole. In one embodiment of this application, the combined electrode 2 is formed by n base electrodes 21, which can be determined according to the size of the piston pin hole and the shape of the pin seat; the overall diameter of the combined electrode 2 can be adjusted by different n values; the overall cross-sectional shape of the combined electrode 2 is first determined according to the size of the piston pin hole workpiece by shaping sleeve, and then enclosed; multiple base electrodes 21 are adjusted in the vertical direction according to the shape of the piston pin hole machining surface, and then clamped with clamp 3; each base electrode 21 is tightly attached to each other, ultimately forming an integral combined electrode 2.

[0043] Further, refer to the attached instruction manual. Figure 6 and attached Figure 7 , Figure 6 A top view of the combined electrode provided in the embodiments of this application after adding a reduced-diameter electrode. Figure 7This is a top view of the combined electrode provided in the embodiment of this application after adding the diameter-expanding electrode. The combined electrode 2 also includes: a diameter-reducing electrode 22 and a diameter-expanding electrode 23 interposed between the base electrode 21.

[0044] Both the aforementioned reduced-diameter electrode 22 and expanded-diameter electrode 23 contract or expand along one end face to the other end face, and both the reduced-diameter electrode 22 and expanded-diameter electrode 23 have a slanted trapezoidal working surface at one end. By using different numbers of base electrodes 21, reduced-diameter electrodes 22, and expanded-diameter electrodes 23, different specifications of combined electrodes 2 can be formed, achieving electrode reuse and meeting the rapid switching of various specifications of different products with the minimum number of electrodes.

[0045] Furthermore, both ends of the aforementioned clamp 3 are provided with protrusions, and the two protrusions are connected through a tightening bolt 4. The engagement method between the aforementioned clamp 3 and the tightening bolt 4 can be referred to the prior art, and will not be elaborated here.

[0046] Furthermore, the power cathode of the power supply system is connected to the combined electrode 2, and the power anode of the power supply system is connected to the outer surface of the piston pin hole 5.

[0047] An electrolytic processing method, applicable to any of the above-mentioned combined electrolytic devices, see attached instruction manual. Figure 8 , Figure 8 The flowchart of the electrolytic processing method provided in the embodiments of this application includes:

[0048] S1: Assemble the combined electrode 2 according to the machining surface of the piston pin hole 5, so that the working surface of the combined electrode 2 conforms to the contour of the machining surface of the piston pin hole 5, and limit the combined electrode 2 on the shaping sleeve 1 by the clamp 3.

[0049] S2: Set the working surface of the combined electrode 2 after limiting it to face the machined surface of the piston pin hole 5, and ensure that there is a uniform gap between them;

[0050] S3: Fill the inside of the piston pin hole 5 with electrolyte, connect the combined electrode 2 to the negative terminal of the power supply, and connect the outer surface of the piston pin hole 5 to the positive terminal of the power supply.

[0051] Specifically: The working surface of the combined electrode 2 is adjusted to align the relative positions of several base electrodes 21 until the shape of the working surface of the combined electrode 2 corresponds to and fits the contour of the machined surface of the piston pin hole 5; the sides of several base electrodes 21 are sequentially attached, with the same-side end face of the base electrodes 21 attached to the circumferential surface of the shaping sleeve 1, while the clamp 3 is fitted onto the outer side of the other end face of all the base electrodes 21, achieving high-precision contouring between the working surface of the combined electrode 2 and the contour of the machined surface of the piston pin hole 5, and the combined electrode 2 is limited on the shaping sleeve 1 by the clamp 3; the working surface of the combined electrode 2 after being fixed and limited is translated to the contour of the machined surface of the piston pin hole 5, maintaining a uniform gap between the working surface and the machined surface. Since the contouring of the working surface and the machined surface is consistent, ensuring a uniform gap ensures that the distance between each corresponding point is equal, thereby ensuring the electrolysis effect. The piston pin hole 5 is filled with electrolyte, and then the two electrodes are energized to achieve electrolytic processing.

[0052] Further, regarding step S1 above, the combined electrode 2 is assembled according to the machining surface contour of the piston pin hole 5, so that the working surface of the combined electrode 2 conforms to the machining surface contour of the piston pin hole 5, and the combined electrode 2 is limited on the shaping sleeve 1 by the clamp 3. Specifically, this can be described as follows:

[0053] Adjust the relative positions of several of the above-mentioned basic electrodes 21 until the working surface shape of the above-mentioned combined electrode 2 and the machining surface contour shape of the above-mentioned piston pin hole 5 correspond to each other, so as to achieve high-precision contouring of the working surface of the combined electrode and the machining surface contour of the piston pin hole.

[0054] The sides of several of the aforementioned base electrodes 21 are sequentially attached, and the same-side end face of the aforementioned base electrodes 21 is attached to the circumferential surface of the aforementioned shaping sleeve 1, while the aforementioned clamp 3 is sleeved on the outer side of the other end face of all the aforementioned base electrodes 21.

[0055] Furthermore, the step of adjusting the relative positions of the aforementioned basic electrodes 21 until the working surface shape of the combined electrode 2 and the machining surface contour shape of the piston pin hole 5 correspond to and fit together further includes:

[0056] A reduced diameter electrode 22 or an expanded diameter electrode 23 is added between the basic electrodes 21. The diameter of the entire combined electrode 2 is adjusted by making one side of the reduced diameter electrode 22 or the expanded diameter electrode 23 thicker. The specific number and position of the electrodes can be changed according to actual needs, which will not be elaborated in this article.

[0057] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0058] The combined electrolysis apparatus and electrolytic processing method provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A combined electrolysis device, applied to the machined surface of a piston pin hole, characterized in that, include: A shaping sleeve, a combined electrode, a clamp, and a power supply system; the combined electrode is sleeved on the circumferential surface of the shaping sleeve, and the clamp is sleeved on the outer side of the combined electrode; The combined electrode includes several basic electrodes. By adjusting the relative positions between the basic electrodes, the working surface of the combined electrode can correspond to the contour of the machined surface of the piston pin hole. A uniform gap is provided between the working surface and the machined surface. The piston pin hole is filled with electrolyte. The two power poles of the power supply system are respectively connected to the piston pin hole and the combined electrode. One end of the base electrode is provided with an inclined trapezoidal working surface, and several base electrodes are arranged in parallel. The sides of several of the basic electrodes are sequentially attached, and the end faces on the same side are all attached to the circumferential surface of the shaping sleeve. The combined electrode further includes: an expanding electrode and a reducing electrode interposed between the base electrodes; Both the expanding electrode and the shrinking electrode shrink or expand along one end face to the other end face, and both the expanding electrode and the shrinking electrode have a slanted trapezoidal working surface at one end. Both ends of the clamp are provided with protrusions, and the two protrusions are connected by tightening bolts. The power cathode of the power supply system is connected to the combined electrode, and the power anode of the power supply system is connected to the outer surface of the piston pin hole.

2. An electrolytic processing method, applicable to the combined electrolytic apparatus of claim 1 above, characterized in that, include: The combined electrode is assembled according to the machining surface of the piston pin hole, so that the working surface of the combined electrode conforms to the contour of the machining surface of the piston pin hole, and the combined electrode is limited on the shaping sleeve by the clamp; The working surface of the combined electrode after being limited is set towards the machined surface of the piston pin hole, and a uniform gap is ensured between the two. The piston pin hole is filled with electrolyte, the combined electrode is connected to the negative terminal of the power supply, and the outer surface of the piston pin hole is connected to the positive terminal of the power supply.

3. The electrolytic machining method according to claim 2, characterized in that, The steps include assembling the combined electrode according to the machining surface of the piston pin hole, making the working surface of the combined electrode conform to the contour of the machining surface of the piston pin hole, and using the clamp to limit the combined electrode on the shaping sleeve. Adjust the relative positions of several of the basic electrodes until the working surface shape of the combined electrode corresponds to the contour of the machined surface of the piston pin hole; The sides of several of the base electrodes are sequentially attached together, and the same-side end face of the base electrodes is attached to the circumferential surface of the shaping sleeve, while the clamp is sleeved on the outside of the other end face of all the base electrodes.

4. The electrolytic machining method according to claim 3, characterized in that, The step of adjusting the relative positions of the basic electrodes until the working surface shape of the combined electrode corresponds to the machining surface contour of the piston pin hole further includes: An expanding electrode or a shrinking electrode is added between the base electrodes.

Images