Dual-purpose chemical milling tool
By designing a chemical milling positioning plate and auxiliary positioning blocks, the problems of cumbersome operation and material waste in chemical milling positioning tools are solved, achieving efficient and precise chemical milling processing, which is suitable for mass production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAANXI HEYE SPECIAL STEEL TOOL
- Filing Date
- 2025-06-24
- Publication Date
- 2026-07-14
AI Technical Summary
In existing chemical milling technology, the positioning tools are cumbersome to operate, paper tools are wasted, and the processing accuracy and efficiency are low, making it difficult to meet the needs of mass production.
It adopts a chemically milled positioning plate with positioning windows and rib strips, and has positioning holes and detachable auxiliary positioning blocks to achieve fast and accurate positioning and reuse.
It improves the cutting efficiency of protective adhesive by 60-70%, enhances the precision of chemical milling, ensures smooth machining, reduces material waste, and is suitable for mass production.
Smart Images

Figure CN224494341U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chemical milling tool technology, specifically to a dual-purpose chemical milling tool. Background Technology
[0002] Chemical milling, also known as chemical etching or chemical dissolution, is a precision machining technique that uses chemical etching solutions to selectively dissolve metallic materials, thereby obtaining specific shapes, sizes, or surface features.
[0003] Chemical milling primarily utilizes chemical solutions (such as acids, alkalis, or oxidizing agents) to controllably dissolve metallic materials. To protect non-processed areas, anti-corrosion coatings (such as photoresist, wax, or polymer films) are used to cover the areas that do not require etching. During material removal, the exposed areas undergo a chemical reaction in the etching solution, forming soluble compounds that are then removed.
[0004] Currently, when locating the machining area of chemically milled parts, the general method is to print the chemical milling pattern on paper at a 1:1 scale, attach the paper to the part surface, and use a knife to cut along the pattern to remove the protective adhesive layer at the chemical milling location. However, using paper-printed patterns allows for only one milling operation; when milling multiple parts, multiple patterns need to be printed. This is cumbersome, and when processing batches of products, it consumes paper and ink cartridges, resulting in waste. Utility Model Content
[0005] To address the aforementioned problems, this utility model provides a dual-purpose chemical milling tool.
[0006] The technical solution of this utility model is:
[0007] A dual-purpose chemical milling tool includes a chemical milling positioning plate with a uniform thickness. The positioning plate has a plurality of positioning windows arranged longitudinally and laterally. Ribs are provided on the positioning plate between the positioning windows. A plurality of cylindrical positioning holes are provided on each rib. An auxiliary positioning block is detachably provided inside the positioning hole. A cylindrical slot is provided in the center of the auxiliary positioning block.
[0008] Furthermore, the thickness of the milling positioning plate is 5–30 mm.
[0009] Note: Select the appropriate thickness based on the size of the part to be processed.
[0010] Furthermore, the positioning window is set as a rectangle, trapezoid, or triangle.
[0011] Note: Select the appropriate window shape according to the size requirements of the part to be processed.
[0012] Furthermore, the milling positioning plate has 3 to 10 positioning windows in the longitudinal direction and 3 to 10 positioning windows in the transverse direction.
[0013] Note: Select the appropriate number of windows based on the size requirements of the parts to be processed.
[0014] Furthermore, the diameter of the positioning hole is 1 to 10 mm.
[0015] Note: Select the appropriate positioning hole diameter according to the dimensional requirements of each part of the part to be machined.
[0016] Furthermore, the auxiliary positioning block is movably engaged with the positioning hole, and a limiting ring is provided at the bottom of the positioning hole. The auxiliary positioning block is connected to the limiting ring, and the diameter of the slot is 0.5 to 5 mm.
[0017] Note: The detection range of the positioning hole can be further improved by using the auxiliary positioning block. When multiple rib sections in the same part have different widths, the detection of rib sections of different widths can be achieved by installing or removing the auxiliary positioning block.
[0018] Furthermore, each of the rib strips is provided with 1 to 6 positioning holes.
[0019] Note: By optimizing the number of positioning holes, accurate detection of the rib strips on the parts can be ensured.
[0020] The beneficial effects of this utility model are:
[0021] This utility model discloses a dual-purpose chemical milling tool that replaces the traditional paper-based chemical milling positioning tool with an integrated structure, greatly improving the cutting efficiency of protective adhesive and allowing for reuse. For the same batch of parts, the efficiency of this tool is 60-70% higher than that of paper tools. In addition, the positioning holes and auxiliary positioning blocks enable rapid detection of the ribs on the parts, thereby improving the accuracy of chemical milling and ensuring smooth subsequent machining. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of a dual-purpose chemical milling tool according to this utility model;
[0023] Figure 2 This is a schematic diagram of a dual-purpose chemical milling tool of this utility model combined with a workpiece to be processed;
[0024] Figure 3 This is a partial structural diagram of a dual-purpose chemical milling tool according to this utility model;
[0025] Figure 4This is a cross-sectional view of the rib strip of this utility model;
[0026] Figure 5 This is a partial top view of the rib strip of this utility model;
[0027] Figure 6 This is a partial top view of the rib strip of this utility model after the auxiliary positioning block is added;
[0028] Figure 7 This is a schematic diagram of the part after machining by a dual-purpose chemical milling tool according to this utility model.
[0029] Among them, 1-milling positioning plate, 2-positioning window, 3-rib strip, 4-positioning hole, 41-limiting ring, 5-auxiliary positioning block, 51-groove. Detailed Implementation
[0030] Example 1
[0031] like Figure 1 As shown, a dual-purpose chemical milling tool includes a chemical milling positioning plate 1, which has a uniform thickness of 20 mm.
[0032] like Figure 1 As shown, 17 positioning windows 2 are arranged in the longitudinal and transverse directions on the milling positioning plate 1. The positioning windows 2 are rectangular, trapezoidal or triangular. There are 5 or 6 positioning windows 2 in the longitudinal direction on the milling positioning plate 1 and 3 or 4 positioning windows 2 in the transverse direction on the milling positioning plate.
[0033] like Figure 1 As shown, the milling positioning plate 1 located between each positioning window 2 is provided with a rib strip 3;
[0034] like Figures 1-3 As shown, each rib strip 3 has 4 to 7 cylindrical positioning holes 4. The number of positioning holes 4 varies depending on the length of the rib strip 3. As shown in the figure, there are 4 or 5 positioning holes 4 on the transverse rib strip and 6 or 7 positioning holes 4 on the longitudinal rib strip 3. The diameter of the positioning hole 4 is 5 mm.
[0035] like Figures 4-6 As shown, an auxiliary positioning block 5 is detachably provided inside the positioning hole 4. A cylindrical slot 51 is provided in the middle of the auxiliary positioning block 5. The auxiliary positioning block 5 is movably engaged with the positioning hole 4. A limiting ring 41 is provided at the bottom of the positioning hole 4. The auxiliary positioning block 5 is connected to the limiting ring 41. The diameter of the slot 51 is 2mm.
[0036] Example 2
[0037] The difference between this embodiment and Embodiment 1 is that:
[0038] The thickness of the milling positioning plate 1 is 5mm.
[0039] Example 3
[0040] The difference between this embodiment and Embodiment 1 is that:
[0041] The thickness of the milling positioning plate 1 is 30mm.
[0042] Example 4
[0043] The difference between this embodiment and Embodiment 1 is that:
[0044] The milling positioning plate 1 has several positioning windows 2 arranged in the longitudinal and transverse directions. The positioning windows 2 are rectangular, trapezoidal or triangular. The milling positioning plate 1 has 3 positioning windows 2 in the longitudinal direction and 3 positioning windows 2 in the transverse direction.
[0045] Example 5
[0046] The difference between this embodiment and Embodiment 1 is that:
[0047] The milling positioning plate 1 has several positioning windows 2 arranged in the longitudinal and transverse directions. The positioning windows 2 are rectangular, trapezoidal or triangular. There are 10 positioning windows 2 in the longitudinal direction of the milling positioning plate 1 and 10 positioning windows 2 in the transverse direction of the milling positioning plate.
[0048] Example 6
[0049] The difference between this embodiment and Embodiment 1 is that:
[0050] Each rib 3 has a cylindrical positioning hole 4 with a diameter of 1 mm, and the slot 51 has a diameter of 0.5 mm.
[0051] Example 7
[0052] The difference between this embodiment and Embodiment 1 is that:
[0053] Each rib strip 3 has 10 cylindrical positioning holes 4 with a diameter of 10 mm, and the slot 51 has a diameter of 5 mm.
[0054] Working principle: The working principle of this utility model of a dual-purpose chemical milling tool is briefly explained below.
[0055] When using it, first, apply a protective adhesive layer to the surface of the part to be processed. Then, place the tool on the surface of the part to be processed and use a carving knife to scrape off the protective adhesive layer at the inner edge of the positioning window 2. At this time, the exposed position of the positioning window 2 is the part to be chemically milled. Then, chemical milling is performed.
[0056] After chemical milling is completed, due to the thickness of the part itself, some chemical milling fluid will seep into the rib strip 3. Even though we have reserved an additional chemical milling error range of 5-10mm before the rib strip 3 was made, additional errors may still occur at the edge of the rib strip 3. Therefore, it is necessary to check through the positioning hole 4. At this time, we place the tool on the surface of the part after chemical milling again, and we can check the chemical milling condition of the rib strip 3 through the positioning hole 4. If a gap is found in the positioning hole 4, it means that the chemical milling error is too large, and a large amount of additional chemical milling has been caused at the rib strip 3.
[0057] If the rib strip 3 to be inspected is narrow, an auxiliary positioning block 5 can be installed. The positioning is achieved by using the smaller slot 51 on the auxiliary positioning block 5. This makes the positioning inspection more accurate. The auxiliary positioning block 5 can be placed on the limiting ring 41.
[0058] After inspection, subsequent machining is performed to process and grind the parts corresponding to position 3 of the rib strip, resulting in the following: Figure 7 The parts shown.
Claims
1. A dual-purpose chemical milling tool, characterized in that, The device includes a chemical milling positioning plate (1), which has a uniform thickness and size. Several positioning windows (2) are arranged on the chemical milling positioning plate (1) in the longitudinal and transverse directions. Ribs (3) are provided on the chemical milling positioning plate (1) between each positioning window (2). Several cylindrical positioning holes (4) are opened on each rib (3). An auxiliary positioning block (5) is detachably provided inside the positioning hole (4). A cylindrical slot (51) is provided in the middle of the auxiliary positioning block (5).
2. The dual-purpose chemical milling tool according to claim 1, characterized in that, The thickness of the milling positioning plate (1) is 5-30 mm.
3. A dual-purpose chemical milling tool according to claim 1, characterized in that, The positioning window (2) is set as a rectangle, trapezoid, or triangle.
4. A dual-purpose chemical milling tool according to claim 1, characterized in that, The milling positioning plate (1) has 3 to 10 positioning windows (2) in the longitudinal direction and 3 to 10 positioning windows (2) in the transverse direction.
5. A dual-purpose chemical milling tool according to claim 1, characterized in that, The diameter of the positioning hole (4) is 1 to 10 mm.
6. A dual-purpose chemical milling tool according to claim 1, characterized in that, The auxiliary positioning block (5) is movably engaged with the positioning hole (4). A limiting ring (41) is provided at the bottom of the positioning hole (4). The auxiliary positioning block (5) is connected to the limiting ring (41). The diameter of the slot (51) is 0.5 to 5 mm.
7. A dual-purpose chemical milling tool according to claim 1, characterized in that, Each of the rib strips (3) is provided with 1 to 6 positioning holes (4).