Static contact sheet milling device
By designing a stationary contact thin-film milling device and adopting multi-component positioning and clamping technology, the efficient processing of three stationary contact parts was achieved, solving the problems of low processing efficiency and out-of-tolerance part dimensions, and improving processing quality and stability.
Patent Information
- Application Number
- CN202410666842.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-11-25
AI Technical Summary
The existing processing efficiency of static contact thin sheets is low, the labor intensity of operators is high, and the parts are out of tolerance or even scrapped, making it difficult to meet the requirements of high precision.
A device for milling stationary contact thin sheets is designed, which uses components such as a cylindrical clamping seat, a rectangular mounting seat, a U-shaped pressure block, a cross-shaped pressure block and a boss pressure block to achieve accurate positioning, clamping and milling of three stationary contact parts.
It improves processing efficiency, reduces the labor intensity of operators, ensures that the size and surface roughness of parts are within the technical requirements, reduces deformation, and avoids parts scrapping.
Smart Images
Figure CN121004301A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a static contact thin sheet milling device, which is mainly used in the field of machining fixtures for aerospace special switch contact parts. Background Technology
[0002] Aerospace special switch structures contain various contact components, with the main key contact components being stationary and moving contacts. The stationary contacts are primarily thin-sheet structures, with a thickness of only 0.4 mm and a surface roughness requirement of Ra 0.8 μm. Because these thin sheets of stationary contacts are located at the center of the part's outer diameter, they can only be machined symmetrically from both sides. Existing machining methods can only process a single stationary contact sheet, resulting in low efficiency. When production tasks involve large batches, single-piece machining is not only inefficient but also increases the operator's workload. Furthermore, the amount of deformation during machining cannot be measured; the thinner the milled thickness, the greater the deformation, easily leading to dimensional deviations or even scrapping of the parts, becoming a bottleneck in machining technology.
[0003] To address the problems of low processing efficiency, high labor intensity for operators, and dimensional inconsistencies or even scrapping of parts in existing static contact sheet milling equipment, it is essential to explore a static contact sheet milling device to improve production efficiency and the stability of processing quality. Summary of the Invention
[0004] To address the shortcomings of existing technologies, this invention provides a stationary contact sheet milling device that enables accurate positioning and clamping of three stationary contact parts, and simultaneously completes the milling of three stationary contact sheets. This device solves the problems of low processing efficiency, high labor intensity for operators, and parts with out-of-tolerance dimensions or even scrap.
[0005] The technical solution adopted in this invention is as follows:
[0006] A static contact thin sheet milling device includes a cylindrical clamping seat, a rectangular mounting seat, a rectangular through cavity, a U-shaped pressure block, a cross-shaped pressure block, a boss pressure block, and screws; characterized in that: the top of the cylindrical clamping seat is integrally connected to the rectangular mounting seat, and a rectangular through cavity is provided in the middle of the rectangular mounting seat.
[0007] The rectangular mounting base has three parallel, disconnected arc grooves on its top plane in the horizontal direction for placing stationary contact parts, and six screw holes in the vertical direction. The bottom plane of the rectangular mounting base also has two screw holes in the vertical direction.
[0008] The number of U-shaped pressure blocks is 2. Each U-shaped pressure block has 3 parallel arc grooves in the middle of one plane, which are used in conjunction with 3 parallel broken arc grooves on the top plane of the rectangular mounting base. Two through holes are provided at both ends, which are connected to the top plane of the rectangular mounting base by screws to press the outer circles of both ends of the stationary contact parts.
[0009] The top of the boss pressure block is provided with three parallel arc grooves, which together with the three parallel disconnected arc grooves on the top plane of the rectangular mounting base form a combined groove for supporting the static contact parts on the reverse side. The bottom is provided with two through holes, which are connected to the bottom plane of the rectangular mounting base by screws.
[0010] The cross-shaped pressure block has two through holes at both ends and is connected to the top plane of the rectangular mounting base by screws. It is used to press the surface of the stationary contact part that has been machined.
[0011] The beneficial effects of this invention are that the static contact thin sheet milling device of this invention, through the rectangular mounting base, rectangular through cavity, U-shaped pressure block, cross-shaped pressure block, boss pressure block, and screw action, makes the device highly accurate in positioning and easy to install. It can clamp three static contact parts at a time to complete the thin sheet processing, effectively control the deformation during processing, ensure that the parallelism, flatness, and roughness of the thin sheet are controlled within the technical requirements, and at the same time improve processing efficiency and reduce the labor intensity of the operator. Attached Figure Description
[0012] Figure 1 This is a schematic front view of the static contact thin sheet milling device of the present invention;
[0013] Figure 2 This is a schematic top view of the static contact thin sheet milling device of the present invention;
[0014] Figure 3 This is a schematic left view of the structure of the static contact thin sheet milling device of the present invention;
[0015] Figure 4 This is a top view illustrating the structure of the clamping part of the present invention;
[0016] Figure 5 This is a schematic left view of the clamping part of the present invention;
[0017] Figure 6 This is a schematic diagram of the U-shaped pressure block of the present invention;
[0018] Figure 7 This is a schematic diagram of the cross-shaped pressure block of the present invention;
[0019] Figure 8 This is a schematic diagram of the structure of the boss pressing block of the present invention;
[0020] Figure 9 This is a structural schematic diagram of a stationary contact component.
[0021] In the diagram: 1. Cylindrical clamping seat; 2. Rectangular mounting base; 3. Rectangular through cavity; 4. U-shaped pressure block; 5. Cross-shaped pressure block; 6. Boss pressure block; 7. Screw; 21. Parallel discontinuous arc groove; 22. Screw hole; 41. Parallel arc groove; 42. Through hole; 51. Through hole; 61. Parallel arc groove; 62. Through hole. 20. Stationary contact component; 201. Outer circle of the left end of the stationary contact component; 202. Process bolt of the right end of the stationary contact component; 203. Upper plane of the thin sheet of the stationary contact component; 204. Lower plane of the thin sheet of the stationary contact component. Detailed Implementation
[0022] The present invention will be further described in detail below through specific embodiments.
[0023] As can be easily seen from the figure: the present invention includes 1. a cylindrical clamping base, 2. a rectangular mounting base, 3. a rectangular through cavity, 4. a U-shaped pressure block, 5. a cross-shaped pressure block, 6. a boss pressure block, 7. a cross-shaped pressure block, 21. a parallel discontinuous arc groove, 22. a screw hole, 41. a parallel arc groove, 42. a through hole, 51. a through hole, 61. a parallel arc groove, and 62. a through hole.
[0024] The specific implementation steps are as follows:
[0025] When using this device, first place it horizontally in the rotary indexing plate hole of the machine tool, clamp the cylindrical clamping seat 1, and use the rectangular through cavity 3 on the rectangular mounting seat 2 to align the center, determining the top plane of the rectangular mounting seat 2 as the 0° reference plane; then use screws 7 to connect the boss pressure block 6 through the through hole 62 and screw hole 22 to the bottom plane of the rectangular mounting seat 2 to form an assembly, so that the three parallel arc grooves 61 on the boss pressure block 6 and the three parallel discontinuous arc grooves 21 on the top plane of the rectangular mounting seat 2 cooperate to form three complete parallel arc grooves; then, using the right end face of the newly formed three parallel arc grooves as a reference, install three stationary contact parts 20 in sequence; connect one U-shaped pressure block 4 on each side to the top plane of the rectangular mounting seat 2 with screws 7 through the through hole 42 and screw hole 22, and use the three parallel arc grooves on the U-shaped pressure block 4 to press the left and right sides of the stationary contact parts respectively. The outer diameter 201 and the right end process bolt 202 of the stationary contact part are clamped at the 0° reference surface, allowing for the machining of the upper plane 203 of the stationary contact part sheet. After machining the upper plane 203 of the stationary contact part sheet, the cross-shaped pressure block 5 is connected to the top plane of the rectangular mounting base 2 using screws 7 through the through hole 51 and screw hole 22. This is used to press the machined upper plane 203 of the stationary contact part sheet and also provides support during reverse machining. Then, the machine tool automatically rotates the indexing plate to position it at the 180° reference surface, pauses the machine tool, removes the boss pressure block 6, exposing the rectangular through cavity 3, which is used for machining the lower plane 204 of the stationary contact part sheet. After machining, the cross-shaped pressure block 5 and the U-shaped pressure block 4 are removed in sequence, and three stationary contact parts 20 can be taken out. Then, the process bolt is cut off by wire cutting to obtain the complete stationary contact part.
[0026] The static contact thin-plate milling device of the present invention has the advantages of high positioning accuracy, convenient installation, and the ability to clamp three static contact parts at once to complete thin-plate processing. It effectively controls deformation during processing, improves processing efficiency, and reduces the labor intensity of the operator. The entire static contact thin-plate milling device has a compact overall structure and is highly efficient, fast, safe, and reliable in use.
Claims
1. A device for milling stationary contact thin sheets, comprising a cylindrical clamping seat, a rectangular mounting seat, a rectangular through cavity, a U-shaped pressure block, a cross-shaped pressure block, a boss pressure block, and screws; characterized in that: The top of the cylindrical clamping base is integrally connected to a rectangular mounting base, and a rectangular through cavity is provided in the middle of the rectangular mounting base.
2. The stationary contact thin sheet milling device according to claim 1, characterized in that: The rectangular mounting base has three parallel, disconnected arc grooves on its top plane in the horizontal direction for placing stationary contact parts, and six screw holes in the vertical direction. The bottom plane of the rectangular mounting base also has two screw holes in the vertical direction.
3. The stationary contact thin sheet milling device according to claim 1, characterized in that: The number of U-shaped pressure blocks is 2. Each U-shaped pressure block has 3 parallel arc grooves in the middle of one plane, which are used in conjunction with 3 parallel broken arc grooves on the top plane of the rectangular mounting base. Two through holes are provided at both ends, which are connected to the top plane of the rectangular mounting base by screws to press the outer circles of both ends of the stationary contact parts.
4. The stationary contact thin sheet milling device according to claim 1, characterized in that: The top of the boss pressure block is provided with three parallel arc grooves, which together with the three parallel disconnected arc grooves on the top plane of the rectangular mounting base form a combined groove for supporting the static contact parts on the reverse side. The bottom is provided with two through holes, which are connected to the bottom plane of the rectangular mounting base by screws.
5. The stationary contact thin sheet milling device according to claim 1, characterized in that: The cross-shaped pressure block has two through holes at both ends and is connected to the top plane of the rectangular mounting base by screws. It is used to press the surface of the stationary contact part that has been machined.