A rectangular waveguide electric bending jig
By designing a rectangular waveguide electric bending tool containing fixed, rotating and sliding modules, the problems of complex waveguide bending process, troublesome operation and low forming quality in the prior art are solved, and efficient and accurate waveguide bending is achieved, and yield and operation convenience are improved.
Patent Information
- Application Number
- CN202011192089.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-10-30
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2040-10-30
AI Technical Summary
The existing rectangular waveguide has complex bending process, troublesome operation and low forming quality, resulting in low yield.
An electric bending tool for rectangular waveguide is designed, and efficient bending of the waveguide is achieved by setting up a fixed module, a rotating module and a sliding module. The smelting tool is mainly composed of stainless steel bending fixing plates, rounded corner rod fixing blocks, rounded corner rod pressing blocks, product pressing blocks, fixed shafts and flanges. Combined with aluminum support and sliders, it achieves precise bending operation.
It improves product forming efficiency, reduces bad scrapping rate, is simple and clear in operation, is suitable for processing products of different specifications, saving costs.
Smart Images
Figure CN112350043B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to an electric bending jig for a rectangular waveguide, belonging to the technical field of bending devices for rectangular waveguides with flanges. Background Art
[0002] The bent waveguide is an important and indispensable part in microwave components. Its shape is not very complex, but the dimensional accuracy requirements are very high, and it has a curved inner cavity. Its longitudinal axis direction is a section of waveguide with a sudden change. The function of the bent waveguide is to change the energy transmission direction. The requirements for the bent waveguide are: small reflection (i.e., small mismatch) and no reduction in breakdown power. There are two types of bent waveguides: one is the E-plane bent waveguide, and the other is the H-plane bent waveguide. The characteristic impedance of the waveguide in the bent part will change. The smaller the radius of curvature, the greater the change.
[0003] Currently, the bent waveguides on the market are mainly formed by hot pushing, stamping, extrusion, and there is also a forming process in which the tube blank is extruded into the outer mold and then the inner cavity of the tube blank is shaped by passing a ball. However, this process is relatively complex, troublesome to operate, and the forming quality is not as good as other processes, so it is less used. Currently, the yield rate on the market is low. Summary of the Invention
[0004] The technical problem to be solved by the present invention is to provide an electric bending jig for a rectangular waveguide with simple process, convenient operation and high product quality.
[0005] To solve the above technical problem, the technical solution adopted by the present invention is:
[0006] An electric bending jig for a rectangular waveguide, including a support, an electric motor fixing plate is connected to the support, a height positioning block is arranged above the electric motor fixing plate, an electric motor and a workbench are connected below the electric motor fixing plate, a bending fixing plate is fixedly connected to the height positioning block, the height positioning block is fixedly connected to the electric motor and the workbench, a flange is connected to the rotating table of the electric motor and the workbench, a fixed shaft is connected above the flange, the fixed shaft passes through the bending fixing plate, a stop block and a product pressing block are arranged on the fixed shaft, and the stop block and the product pressing block are used to clamp one end flange of the product. A limit support block is arranged on the bending fixing plate, a slide rail is horizontally arranged on the limit support block, a slider is arranged on the slide rail, a top block positioning block is connected to the slider, a product top block is connected to the top block positioning block through corresponding slots on the left and right sides of the top block positioning block, a flange groove for clamping the other end flange of the product is opened on the product top block, the side of the product pressing block facing the product top block is an arc structure, a round corner bar fixing block is arranged on the bending fixing plate on the side of the fixed shaft away from the stop block, and a round corner bar pressing block is arranged on the round corner bar fixing block.
[0007] A cushion block is arranged on the side of the product pressing block close to the stop block.
[0008] The product briquette is movably fixed on the fixed shaft through a positioning pin.
[0009] The materials of the support, motor fixing plate, height positioning block, top block positioning block and cushion block are aluminum.
[0010] The materials of the bending fixing plate, fillet bar fixing block, fillet bar briquette, product briquette, fixed shaft and flange are stainless steel.
[0011] The material of the product top block is SKD11.
[0012] Advantages of the present invention: A rectangular waveguide electric bending jig provided by the present invention, by setting a fixing module, a rotating module and a sliding module, the fixing module mainly consists of a support 1, a motor fixing plate 3, a height positioning block 4, a bending fixing plate 5, a fillet bar fixing block 10, a fillet bar briquette 11, and a fillet bar 18. The rotating module mainly consists of a motor and a workbench 2, a flange 17, a fixed shaft 15, a product briquette 14, a stop block 9, and a cushion block 16. The sliding module mainly consists of a limit support block 6, a slide rail 12, a slider 7, a top block positioning block 8, and a product top block 13. The three modules cooperate with each other, which can improve the product forming efficiency, reduce the defective rejection rate, and can process products of different specifications by adjusting the tooling. The operation is simple and clear, and the cost is saved. Description of the Drawings
[0013] Figure 1 and Figure 2 is a three-dimensional structural schematic diagram of a rectangular waveguide electric bending jig of the present invention;
[0014] Figure 3 is a top view structural schematic diagram of the state of the jig before and after bending the product of the present invention;
[0015] Figure 4 is a structural schematic diagram of the product before and after bending in the present invention.
[0016] The reference numerals in the drawings are as follows: 1 - support; 2 - motor and workbench; 3 - motor fixing plate; 4 - height positioning block; 5 - bending fixing plate; 6 - limit support block; 7 - slider; 8 - top block positioning block; 9 - stop block; 10 - fillet bar fixing block; 11 - fillet bar briquette 12 - slide rail; 13 - product top block; 14 - product briquette; 15 - fixed shaft; 16 - cushion block; 17 - flange; 18 - fillet bar; 19 - positioning pin; 20 - screw. Detailed Embodiments
[0017] The present invention will be further described below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and cannot be used to limit the protection scope of the present invention.
[0018] As Figure 1 and Figure 2 shown, the present invention discloses a rectangular waveguide electric bending jig, which includes a support 1. A motor fixing plate 3 is connected to the support 1, and the support 1 is locked with the motor fixing plate 3 by screws. Above the motor fixing plate 3, a height positioning block 4 is provided. Below the motor fixing plate 3, a motor and a workbench 2 are connected. The motor and the workbench 2 are mainly composed of a motor, a rotating table, an electric control system, and a motor mounting bracket, and are tightly connected to the motor fixing plate 3 and the height positioning block 4 through positioning pins and mounting screws. A bending fixing plate 5 is fixedly connected to the height positioning block 4. The height positioning block 4 is fixedly connected to the motor and the workbench 2. A flange 17 is connected to the rotating table of the motor and the workbench 2. The flange 17 is tightly connected to the rotating table driven by the motor through positioning pins and screws. Above the flange 17, a fixed shaft 15 is connected. The fixed shaft 15 is positioned and torque-transmitted to the flange 17 through a bottom boss, and is locked from the lower surface of the flange 17 by screws.
[0019] The fixed shaft 15 passes through the bending fixing plate 5. On the fixed shaft 15, a stop block 9 and a product pressing block 14 are provided. The product pressing block 14 is installed on the upper surface boss of the fixed shaft 15 through positioning pins and screws. The stop block 9 needs to be installed on the upper surface of the fixed shaft 15 through positioning pins and screws. The product pressing block 14 is movably fixed on the fixed shaft 15 through a positioning pin 19. Between the stop block 9 and the product pressing block 14 is used to clamp one end flange of the product. On the bending fixing plate 5, a limit support block 6 is provided. Horizontally on the limit support block 6, a slide rail 12 is provided. On the slide rail 12, a slider 7 is provided. The slider 7 needs to ensure good linearity, sufficient strength and hardness, and smooth sliding. A top block positioning block 8 is connected to the slider 7. The top block positioning block 8 is connected to the side of the slider 7 by screws. Between the product top block 13 and the top block positioning block 8 is connected through corresponding card slots on the left and right sides of the top block positioning block 8 to fix the product and prevent the product cavity wall from being over-stretched and deformed. On the product top block 13, a flange card slot for clamping the other end flange of the product is provided. The side of the product pressing block 14 facing the product top block 13 is an arc structure. On the bending fixing plate 5, on the side of the fixed shaft 15 away from the stop block 9, a round corner bar fixing block 10 is provided. The round corner bar fixing block 10 is installed on the upper surface of the bending fixing plate 5 through positioning pins and screws. A round corner bar pressing block 11 is provided on the round corner bar fixing block 10. The round corner bar 18 and the round corner bar pressing block 11 are tightly connected and matched with the round corner bar fixing block 10 through screws and positioning pins.
[0020] On the side of the product pressing block 14 close to the stop block 9, a cushion block 16 is provided. The cushion block 16 needs to be padded between the stop block 9 and the product to play a role in fastening, eliminating the gap between the workpiece and the stop block, and preventing the performance surface of the product flange from being scratched.
[0021] In the present invention, the materials of the support 1, the motor fixing plate 3, the height positioning block 4, the top block positioning block 8, and the spacer 16 are aluminum. The materials of the bending fixing plate 5, the fillet bar fixing block 10, the fillet bar pressing block 11, the product pressing block 14, the fixed shaft 15, and the flange 17 are stainless steel. The material of the product top block 13 is SKD11.
[0022] The working principle of the present invention is as follows: Taking the BJ320 WR28 type waveguide port UG-599 / U type flange H-plane bent waveguide as an example, the following will make a detailed description of this example in conjunction with the accompanying drawings. The specific operation steps are as follows:
[0023] Step 1, after confirming that the jig has returned to Figure 1 the starting position, remove the screws and positioning pins on the product pressing block 14, and remove the product pressing block 14; remove the fillet bar pressing block 11 and the fillet bar 18.
[0024] Step 2, as Figure 3 shown on the left: Take out the product to be bent (as Figure 4 shown on the left), confirm the placement direction, clamp one end of the product flange in the card slot of the product top block 13, and the other end flange 17 is stuck with the side of the product pressing block 14. Install the product pressing block 14 and lock it with the positioning pin and screw. Insert the fillet bar 18 into the cavity, and the end of the fillet bar 18 needs to be locked with the fillet bar pressing block 11 in cooperation with the positioning pin and screw.
[0025] Step 3, through the electric control system, control the rotation speed, strength, and angle of the motor to complete the bending work of the waveguide to reach the state as Figure 3 shown on the right.
[0026] Step 4, remove the screws and positioning pins on the product pressing block 14, remove the fillet bar pressing block 11, pull out the fillet bar 18, and take out the product to obtain the finished product drawing as Figure 4 shown on the right.
[0027] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.
Claims
1. A rectangular waveguide electric bending jig, characterized in that: It includes a support (1), on which a motor fixing plate (3) is connected. Above the motor fixing plate (3), a height positioning block (4) is arranged. Below the motor fixing plate (3), a motor and a workbench (2) are connected. On the height positioning block (4), a bending fixing plate (5) is fixedly connected. The height positioning block (4) is fixedly connected to the motor and the workbench (2). On the rotating table of the motor and the workbench (2), a flange plate (17) is connected. Above the flange plate (17), a fixed shaft (15) is connected. The fixed shaft (15) passes through the bending fixing plate (5). On the fixed shaft (15), a stop block (9) and a product pressing block (14) are arranged. Between the stop block (9) and the product pressing block (14) is used to clamp one end flange of the product. On the bending fixing plate (5), a limit support block (6) is arranged. Horizontally on the limit support block (6), a slide rail (12) is arranged. On the slide rail (12), a slider (7) is arranged. On the slider (7), a top block positioning block (8) is connected. The product top block (13) is connected to the top block positioning block (8) through the corresponding card slots on the left and right sides of the top block positioning block (8). On the product top block (13), a flange plate card slot for clamping the other end flange of the product is opened. The side of the product pressing block (14) facing the product top block (13) is an arc structure. On the bending fixing plate (5), on the side of the fixed shaft (15) away from the stop block (9), a fillet bar fixing block (10) is arranged. On the fillet bar fixing block (10), a fillet bar pressing block (11) is arranged. When the waveguide is bent, a fillet bar (18) is inserted into the cavity. The end of the fillet bar (18) is locked with the fillet bar pressing block (11) by a positioning pin and screws.
2. The rectangular waveguide electric bending jig according to claim 1, characterized in that: A cushion block (16) is arranged on the side of the product pressing block (14) close to the stop block (9).
3. The rectangular waveguide electric bending jig according to claim 1, characterized in that: The product pressing block (14) is movably fixed on the fixed shaft (15) through a positioning pin (19).
4. The rectangular waveguide electric bending jig according to claim 1, characterized in that: The materials of the support (1), the motor fixing plate (3), the height positioning block (4), the top block positioning block (8) and the cushion block (16) are aluminum.
5. The rectangular waveguide electric bending jig according to claim 1, characterized in that: The materials of the bending fixing plate (5), the fillet bar fixing block (10), the fillet bar pressing block (11), the product pressing block (14), the fixed shaft (15) and the flange plate (17) are stainless steel.
6. The rectangular waveguide electric bending jig according to claim 1, characterized in that: The material of the product top block (13) is SKD11.
Citation Information
Patent Citations
Improved bent pipe bending device
CN110814110A
Semi-automatic pipe-bending machine
CN203002877U