A straightening fixture for traveling wave accelerator tubes

Abstract

This utility model discloses a straightening fixture for traveling wave accelerator tubes, applied in the field of traveling wave accelerator tube processing. It includes a base plate with two first guide rails bolted to its top. By loosening the first bolts, the first fixing bracket can be moved to the desired position, thus accommodating traveling wave accelerator tubes of different lengths. Rotating the turntable causes the first screw to rotate, moving the second fixing head, which can fix traveling wave accelerator tubes of different diameters, thereby achieving applicability to traveling wave accelerator tubes of different sizes, reducing usage costs, and improving practicality and applicability. Furthermore, by moving a pull block, the locking rod disengages from the locking groove, allowing the electronic dial indicator to be removed. A new electronic dial indicator is then installed in the fixing base, where the locking rod engages with the locking groove under the action of a spring, thus facilitating dial indicator replacement, reducing workload, and improving replacement efficiency.

Description

Technical Field

[0001] This utility model relates to the field of traveling wave accelerator tube processing, and in particular to a straightening fixture for the straightness of traveling wave accelerator tubes. Background Technology

[0002] Straightness is a crucial mechanical parameter of a traveling-wave accelerator tube, directly impacting its capture rate. Better straightness results in lower electron loss during acceleration and a larger beam current. Accelerator tubes are constructed from individual plates and cavities, each individually machined before being welded together. The welding fixtures alone cannot guarantee perfect straightness. Therefore, the welded accelerator tube needs to be straightened to achieve the required straightness.

[0003] A search of Chinese patents revealed publication number CN208366260U, which discloses a straightening fixture for a traveling-wave accelerator tube. The fixture includes a platform with a pair of accelerator tube supports on the platform. The traveling-wave accelerator tube is mounted on the supports. A dial indicator and a pressure device are positioned between the two supports. The dial indicator measures the peak and trough points of the accelerator tube, and the pressure device is used for adjustment. The peak and trough points are then measured again, and the adjustment is repeated using the pressure device. Compared to existing technologies, this straightening fixture for a traveling-wave accelerator tube can accurately correct the straightness of the tube, ensuring lower electron loss during internal acceleration and a larger output beam current.

[0004] Existing straightening fixtures are not suitable for traveling wave accelerator tubes of different sizes. Generally, the size of the straightening fixture is fixed, resulting in poor adaptability to different specifications of traveling wave accelerator tubes. Accelerator tubes of different diameters and lengths require different straightening tools, and the tool changing process is cumbersome, increasing production costs and operational difficulty, reducing practicality and applicability. It is also inconvenient to replace dial indicators. Generally, straightening fixtures use dial indicators to test the straightness of traveling wave accelerator tubes, and dial indicators are fixed by bolts. When replacing them, tools are needed to disassemble and assemble them, which is a troublesome process, increases workload, and reduces replacement efficiency. In order to solve the above problems, we propose a straightening fixture for traveling wave accelerator tubes. Utility Model Content

[0005] The purpose of this invention is to provide a straightening fixture for traveling wave accelerator tubes, which has the advantages of being applicable to traveling wave accelerator tubes of different sizes and facilitating the replacement of dial indicators.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a traveling wave accelerator tube straightening fixture, comprising a base plate, two first guide rails bolted to the top of the base plate, three first slide blocks slidably connected to the top of the first guide rails, a first bolt threaded to the inner wall of the first slide block, and the inner end of the first bolt contacting the surface of the first guide rail, a first fixing frame bolted to the top of the first slide block, a first fixing head bolted between the inner walls of the first fixing frame, a second fixing head slidably connected between the inner walls of the first fixing frame, a first screw rotatably connected to the top of the second fixing head, and the first screw threaded to the inner wall of the first fixing frame, and a pressing mechanism provided on the top of the first guide rails.

[0007] By adopting the above technical solution, the first fixing bracket can be moved to the required position by loosening the first bolt, thereby making it suitable for traveling wave accelerator tubes of different lengths. Rotating the turntable causes the first screw to rotate, which in turn moves the second fixing head, allowing it to fix traveling wave accelerator tubes of different diameters. This achieves the goal of being suitable for traveling wave accelerator tubes of different sizes, reducing the cost of use and improving practicality and applicability.

[0008] The present invention is further configured such that: an adjustment mechanism is provided on the top of the base plate; a support rod is bolted to the surface of the adjustment mechanism; a fixed seat is bolted to the other end of the support rod; an electronic dial indicator is slidably sleeved on the inner wall of the fixed seat; a snap-fit ​​rod is slidably sleeved on the inner wall of the fixed seat; a limit plate is fixedly sleeved on the surface of the snap-fit ​​rod; a spring is provided between the limit plate and the inner wall of the fixed seat; and a snap-fit ​​groove is opened on the surface of the electronic dial indicator, and the snap-fit ​​groove snaps into the snap-fit ​​rod.

[0009] By adopting the above technical solution, the pull block is moved, causing the locking rod to disengage from the locking slot, allowing the electronic dial indicator to be removed. The new electronic dial indicator is then installed in the mounting base, where the locking rod engages with the locking slot under the action of a spring, thus securing it. This method facilitates the replacement of the dial indicator, reduces workload, and improves replacement efficiency.

[0010] The present invention is further configured such that: the pressing mechanism includes a second slide block, the second slide block is slidably connected to the surface of the first guide rail, the inner wall of the second slide block is threaded with a second bolt, and the inner end of the second bolt is in contact with the surface of the first guide rail; a second fixing frame is bolted to the top of the second slide block, a fixing rod is bolted to the inner wall of the second fixing frame, and hydraulic rods are bolted to the bottom of the fixing rod and the top of the second fixing frame; the output end of the hydraulic rod is respectively bolted with a top block and a pressure block, and the top block and the pressure block are slidably connected to the inner wall of the second fixing frame.

[0011] Using the above technical solution, by setting up a top-pressing mechanism, the hydraulic rod pushes the top block and pressure block to move, thereby straightening the traveling wave acceleration tube by top pressure.

[0012] The present invention is further configured such that: the adjusting mechanism includes a second guide rail, the second guide rail is bolted to the surface of the base plate, a third slide block is bolted to the surface of the second guide rail, a third bolt is threaded to the inner wall of the third slide block, and the inner end of the third bolt contacts the surface of the second guide rail, a vertical rod is bolted to the top of the third slide block, a groove is formed on the surface of the vertical rod, a slider is slidably connected to the inner wall of the groove, and the surface of the slider is bolted to one end of the support rod, a second screw is threaded to the inner wall of the slider, and the second screw is rotatably connected to the inner wall of the vertical rod.

[0013] By adopting the above technical solution, by setting an adjustment mechanism and loosening the third bolt, the position of the electronic dial indicator can be adjusted along the second guide rail. By rotating the rotating head, the second screw drives the slider to move the electronic dial indicator up and down, thereby adjusting the height of the electronic dial indicator.

[0014] The present invention is further configured such that the surface of the base plate is printed with scale lines.

[0015] By adopting the above technical solution, the position can be easily adjusted by setting scale lines.

[0016] The present invention is further configured such that: a turntable is fixedly sleeved on the top of the first screw, and a rotating head is bolted to the top of the second screw.

[0017] By adopting the above technical solution, the turntable and rotating head are set up to facilitate the rotation of the first screw and the second screw, making it convenient to use.

[0018] The present invention is further configured such that a pull block is bolted to one end of the locking rod.

[0019] By adopting the above technical solution, the locking rod can be easily moved by setting a pull block.

[0020] The present invention is further configured such that one end of the snap-fit ​​rod is wedge-shaped.

[0021] By adopting the above technical solution, one end of the locking rod is wedge-shaped, which facilitates the fixing of the electronic dial indicator.

[0022] In summary, this utility model has the following beneficial effects:

[0023] 1. This utility model allows the first fixing bracket to be moved to the required position by loosening the first bolt, thereby enabling it to accommodate traveling wave accelerator tubes of different lengths. Rotating the turntable causes the first screw to rotate, which in turn moves the second fixing head, allowing it to fix traveling wave accelerator tubes of different diameters. This achieves applicability to traveling wave accelerator tubes of different sizes, reduces usage costs, and improves practicality and applicability.

[0024] 2. This utility model uses a movable pull block to disengage the locking rod from the locking slot, allowing the electronic dial indicator to be removed. A new electronic dial indicator is then installed in the mounting base, where the locking rod engages with the locking slot under the action of a spring, thus securing it in place. This method facilitates dial indicator replacement, reduces workload, and improves replacement efficiency. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural view of the present invention;

[0026] Figure 2 This is a partial structural cross-sectional view of the present invention;

[0027] Figure 3 This is a partial structural cross-sectional view of the present invention;

[0028] Figure 4 This is a cross-sectional view of the top-pressing mechanism of this utility model;

[0029] Figure 5 This is a utility model Figure 2 Enlarged view of the structure at point A in the middle.

[0030] Reference numerals: 1. Base plate; 2. First guide rail; 3. First slide; 4. First bolt; 5. First fixing frame; 6. First fixing head; 7. Second fixing head; 8. First screw; 9. Top pressing mechanism; 10. Adjustment mechanism; 11. Support rod; 12. Fixing seat; 13. Electronic dial indicator; 14. Clamping rod; 15. Limiting plate; 16. Spring; 17. Clamping groove; 18. Second slide; 19. Second bolt; 20. Second fixing frame; 21. Fixing rod; 22. Hydraulic rod; 23. Top block; 24. Pressure block; 25. Second guide rail; 26. Third slide; 27. Third bolt; 28. Upright rod; 29. ​​Slide groove; 30. Slider; 31. Second screw; 32. Scale line; 33. Turntable; 34. Rotating head; 35. Pull block. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Example 1:

[0033] refer to Figure 1 and Figure 3A straightening fixture for traveling wave accelerator tubes includes a base plate 1. Two first guide rails 2 are bolted to the top of the base plate 1. Three first slide blocks 3 are slidably connected to the top of the first guide rails 2. First bolts 4 are threaded to the inner walls of the first slide blocks 3, and the inner ends of the first bolts 4 are in contact with the surfaces of the first guide rails 2. A first fixing frame 5 is bolted to the top of the first slide blocks 3. A first fixing head 6 is bolted between the inner walls of the first fixing frames 5. A second fixing head 7 is slidably connected between the inner walls of the first fixing frames 5. A first screw 8 is rotatably connected to the top of the second fixing head 7, and the first screw 8 is threaded to the inner wall of the first fixing frame 5. A pressing mechanism 9 is provided on the top of the first guide rails 2. By loosening the first bolts 4, the first fixing frame 5 can be moved to the required position, thereby accommodating traveling wave accelerator tubes of different lengths. Rotating the turntable 33 causes the first screw 8 to rotate, causing the second fixing head 7 to move, which can fix traveling wave accelerator tubes of different diameters, thereby achieving applicability to traveling wave accelerator tubes of different sizes, reducing the cost of use, and improving practicality and applicability.

[0034] refer to Figure 1 and Figure 4 The pressing mechanism 9 includes a second slide 18, which is slidably connected to the surface of the first guide rail 2. A second bolt 19 is threadedly connected to the inner wall of the second slide 18, and the inner end of the second bolt 19 contacts the surface of the first guide rail 2. A second fixing frame 20 is bolted to the top of the second slide 18, and a fixing rod 21 is bolted to the inner wall of the second fixing frame 20. Hydraulic rods 22 are bolted to the bottom of the fixing rod 21 and the top of the second fixing frame 20. A top block 23 and a pressure block 24 are bolted to the output end of the hydraulic rod 22, and the top block 23 and the pressure block 24 are slidably connected to the inner wall of the second fixing frame 20. By setting the pressing mechanism 9, the hydraulic rod 22 pushes the top block 23 and the pressure block 24 to move, thereby pressing and straightening the traveling wave acceleration tube.

[0035] refer to Figure 1 The surface of the base plate 1 is printed with scale lines 32, which facilitates position adjustment.

[0036] Example 2:

[0037] refer to Figure 1 , Figure 2 and Figure 5An adjustment mechanism 10 is provided on the top of the base plate 1. A support rod 11 is bolted to the surface of the adjustment mechanism 10. A fixed seat 12 is bolted to the other end of the support rod 11. An electronic dial indicator 13 is slidably sleeved on the inner wall of the fixed seat 12. The dial indicator is a German Maer WPS. The Type 25 high-precision electronic dial indicator has a locking rod 14 slidably sleeved on the inner wall of the fixed base 12. A limiting plate 15 is fixedly sleeved on the surface of the locking rod 14. A spring 16 is provided between the limiting plate 15 and the inner wall of the fixed base 12. The surface of the electronic dial indicator 13 has a locking groove 17, which engages with the locking rod 14. By moving the pull block 35, the locking rod 14 is disengaged from the locking groove 17, allowing the electronic dial indicator 13 to be removed. A new electronic dial indicator 13 is then installed in the fixed base 12, where the locking rod 14 engages with the locking groove 17 under the action of the spring 16. This method of fixing the dial indicator facilitates replacement, reduces workload, and improves replacement efficiency.

[0038] refer to Figure 1 and Figure 2 The adjustment mechanism 10 includes a second guide rail 25, which is bolted to the surface of the base plate 1. A third slide block 26 is bolted to the surface of the second guide rail 25. A third bolt 27 is threaded to the inner wall of the third slide block 26, and the inner end of the third bolt 27 contacts the surface of the second guide rail 25. A vertical rod 28 is bolted to the top of the third slide block 26. A groove 29 is formed on the surface of the vertical rod 28. A slider 30 is slidably connected to the inner wall of the groove 29, and the surface of the slider 30 is bolted to one end of the support rod 11. A second screw 31 is threaded to the inner wall of the slider 30, and the second screw 31 is rotatably connected to the inner wall of the vertical rod 28. By setting the adjustment mechanism 10, the position of the electronic dial indicator 13 can be adjusted along the second guide rail 25 by loosening the third bolt 27. Rotating the rotating head 34 causes the second screw 31 to drive the slider 30, which moves the electronic dial indicator 13 up and down, thereby adjusting the height of the electronic dial indicator 13.

[0039] refer to Figure 1 and Figure 3 A turntable 33 is fixedly sleeved on the top of the first screw 8, and a rotating head 34 is bolted to the top of the second screw 31. By setting the turntable 33 and the rotating head 34, it is easy to rotate the first screw 8 and the second screw 31, making it convenient to use.

[0040] refer to Figure 5 One end of the locking rod 14 is bolted with a pull block 35, which facilitates the movement of the locking rod 14.

[0041] refer to Figure 5 One end of the locking rod 14 is wedge-shaped, which facilitates the fixing of the electronic dial indicator 13.

[0042] Brief description of the usage process: Loosen the first bolt 4. According to the length of the traveling wave accelerator tube, move the first slide block 3 to the required position, then tighten the first bolt 4 to fix it. After adjusting the length, place the traveling wave accelerator tube on the first fixed head 6. Then rotate the turntable 33 to rotate the first screw 8. The rotation of the first screw 8 causes the second fixed head 7 to descend and press and fix the traveling wave accelerator tube. Then rotate the rotating head 34 to move the second screw 31 and the slider 30, causing the electronic dial indicator 13 to descend and contact the surface of the traveling wave accelerator tube. Loosen the third bolt 27, move the electronic dial indicator 13 to measure the straightness of the traveling wave accelerator tube, and find the peak and valley points of the traveling wave accelerator tube. Then loosen the second bolt 19 and move the top pressing mechanism 9 to the peak and valley points. At the valley point, the hydraulic rod 22 drives the top block 23 to move upward, pushing the traveling wave accelerator tube upward. At the peak point... The position pressure block 24 presses down on the traveling wave accelerator tube. The pressing is performed in multiple stages, with a maximum pressing value of 0.2 mm each time and a pressing duration of 4 hours each time. After each pressing, the electronic dial indicator 3 is used to measure along the length of the traveling wave accelerator tube to obtain all the new peaks and valleys along the length of the traveling wave accelerator tube. The pressing is repeated until the peaks and valleys reach the expected error range from the ideal center line. Then the traveling wave accelerator tube is disassembled and rotated 90 degrees to fix it. The above steps are then repeated for straightening. The pull block 35 is moved so that the locking rod 14 is disengaged from the locking groove 17. The electronic dial indicator 13 is removed and a new electronic dial indicator 13 is installed in the fixing base 12. The locking rod 14 is locked with the locking groove 17 under the action of the spring 16 to fix it, thus completing the replacement and facilitating the replacement of the electronic dial indicator 13.

[0043] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.

[0044] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A straightening fixture for the straightness of a traveling wave accelerator tube, comprising a base plate (1), characterized in that, The top of the base plate (1) is bolted with two first guide rails (2), and the top of the first guide rails (2) is slidably connected with three first slide blocks (3). The inner wall of the first slide block (3) is threaded with a first bolt (4), and the inner end of the first bolt (4) is in contact with the surface of the first guide rail (2). The top of the first slide block (3) is bolted with a first fixing frame (5), and the inner walls of the first fixing frame (5) are bolted with a first fixing head (6). The inner walls of the first fixing frame (5) are slidably connected with a second fixing head (7). The top of the second fixing head (7) is rotatably connected with a first screw (8), and the first screw (8) is threadedly connected to the inner wall of the first fixing frame (5). The top of the first guide rail (2) is provided with a pressing mechanism (9).

2. The traveling wave accelerator tube straightening fixture according to claim 1, characterized in that, An adjustment mechanism (10) is provided on the top of the base plate (1). A support rod (11) is bolted to the surface of the adjustment mechanism (10). A fixed seat (12) is bolted to the other end of the support rod (11). An electronic dial indicator (13) is slidably sleeved on the inner wall of the fixed seat (12). A snap-fit ​​rod (14) is slidably sleeved on the inner wall of the fixed seat (12). A limit plate (15) is fixedly sleeved on the surface of the snap-fit ​​rod (14). A spring (16) is provided between the limit plate (15) and the inner wall of the fixed seat (12). A snap-fit ​​groove (17) is opened on the surface of the electronic dial indicator (13), and the snap-fit ​​groove (17) snaps with the snap-fit ​​rod (14).

3. The traveling wave accelerator tube straightening fixture according to claim 1, characterized in that, The top pressing mechanism (9) includes a second slide (18), which is slidably connected to the surface of the first guide rail (2). The inner wall of the second slide (18) is threaded with a second bolt (19), and the inner end of the second bolt (19) is in contact with the surface of the first guide rail (2). A second fixing frame (20) is bolted to the top of the second slide (18), and a fixing rod (21) is bolted to the inner wall of the second fixing frame (20). A hydraulic rod (22) is bolted to the bottom of the fixing rod (21) and the top of the second fixing frame (20). A top block (23) and a pressure block (24) are bolted to the output end of the hydraulic rod (22), and the top block (23) and the pressure block (24) are slidably connected to the inner wall of the second fixing frame (20).

4. The traveling wave accelerator tube straightening fixture according to claim 2, characterized in that, The adjustment mechanism (10) includes a second guide rail (25), which is bolted to the surface of the base plate (1). A third slide block (26) is bolted to the surface of the second guide rail (25). A third bolt (27) is threaded to the inner wall of the third slide block (26), and the inner end of the third bolt (27) is in contact with the surface of the second guide rail (25). A vertical rod (28) is bolted to the top of the third slide block (26). A groove (29) is provided on the surface of the vertical rod (28). A slider (30) is slidably connected to the inner wall of the groove (29), and the surface of the slider (30) is bolted to one end of the support rod (11). A second screw (31) is threaded to the inner wall of the slider (30), and the second screw (31) is rotatably connected to the inner wall of the vertical rod (28).

5. The traveling wave accelerator tube straightening fixture according to claim 1, characterized in that, The base plate (1) has scale lines (32) printed on its surface.

6. The traveling wave accelerator tube straightening fixture according to claim 4, characterized in that, The top of the first screw (8) is fixedly sleeved with a turntable (33), and the top of the second screw (31) is bolted with a rotating head (34).

7. The traveling wave accelerator tube straightening fixture according to claim 2, characterized in that, A pull block (35) is bolted to one end of the snap-fit ​​rod (14).

8. The traveling wave accelerator tube straightening fixture according to claim 2, characterized in that, One end of the snap-fit ​​rod (14) is wedge-shaped.

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