Rapid alignment clamp for accelerating tube coupler

Abstract

The utility model provides a quick alignment fixture for an accelerating tube coupler, which belongs to the field of electron accelerators and comprises a three-jaw chuck, one jaw of the three-jaw chuck is provided with a first clamping seat, the other two jaws of the three-jaw chuck are respectively provided with a second clamping seat, the first clamping seat is provided with a first clamping groove, and the second clamping seat is provided with a second clamping groove. A second clamping groove is formed in the second clamping seat; the side, away from the first clamping base, of the second clamping base is provided with an abutting piece which is used for abutting against the end face of the rectangular part of the accelerating tube coupler. The side wall of the first clamping groove is in a circular arc shape, the side wall of the second clamping groove comprises a circular arc section and a straight section, the circular arc section is located on the side, close to the first clamping groove, of the second clamping groove, and the straight section is located on the side, away from the first clamping groove, of the second clamping groove. According to the utility model, the accelerating tube coupler can be quickly and accurately clamped, so that the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electron accelerators, in particular to a fast alignment fixture for an accelerating tube coupler. Background Art

[0002] The accelerator tube is an important source of electron beams and X-rays. Its basic principle is that the external RF power is fed into the accelerator tube cavity chain through the coupler cavity to stimulate the electromagnetic field that has a longitudinal acceleration effect on the electrons, making them have higher energy, and finally output electron beams or high-energy electron beams to bombard the metal target to produce bremsstrahlung output X-rays. The coupler is an important component of the accelerator tube and is the connecting component between the rectangular waveguide and the circular accelerator tube. Figure 1 The accelerating tube coupler 5 mainly includes a circular portion 51 and a rectangular portion 52. The circular portion 51 needs to be grooved, so the accelerating tube coupler 5 needs to be clamped as a whole for easy processing.

[0003] At present, when a four-jaw chuck is generally used to clamp the accelerating tube coupler 5, the circular portion 51 of the accelerating tube coupler 5 is first clamped by three of the clamping jaws, and then the accelerating tube coupler 5 is rotated to adjust the position of the rectangular portion 52 so that the end face of the rectangular portion 52 faces the remaining clamping jaw, and finally the clamping jaw is pressed against the rectangular portion 52 to clamp the accelerating tube coupler 5 as a whole. The clamping process is relatively inconvenient and the accuracy of the clamping position is difficult to ensure. Utility Model Content

[0004] The utility model aims to provide a fast alignment fixture for an accelerating tube coupler, which can quickly and accurately clamp the accelerating tube coupler, thereby improving work efficiency.

[0005] The embodiment of the utility model is realized by the following technical scheme: a fast alignment fixture for an accelerating tube coupler comprises a three-jaw chuck, one of the jaws of the three-jaw chuck is provided with a first clamping seat, the other two jaws of the three-jaw chuck are provided with a second clamping seat, the first clamping seat is provided with a first clamping groove, the second clamping seat is provided with a second clamping groove; a side of the second clamping seat away from the first clamping seat is provided with a clamping piece, the clamping piece is used to clamp the end face of the rectangular portion of the accelerating tube coupler; the side wall of the first clamping groove is in an arc shape, the side wall of the second clamping groove comprises an arc section and a straight section, the arc section is located on the side of the second clamping groove close to the first clamping groove, and the straight section is located on the side of the second clamping groove away from the first clamping groove.

[0006] Furthermore, the clamping member includes a clamping bolt and a clamping block, the clamping bolt is threadedly connected to the second clamping seat and the length direction of the clamping bolt is perpendicular to the end face of the rectangular portion of the accelerating tube coupler, and the clamping block is rotatably connected to the end of the clamping bolt.

[0007] Furthermore, the abutment block is a rectangular block, the width of the abutment block is greater than the thickness of the accelerating tube coupler, and the second clamping seat is provided with a receiving groove for accommodating and moving the abutment block, and the depth of the receiving groove is greater than the depth of the second clamping groove.

[0008] Furthermore, a rubber cushion layer is provided on a side of the clamping block away from the clamping bolt.

[0009] Furthermore, when the jaws of the three-jaw chuck are closed, there is a gap between the first clamping seat and the second clamping seat, and between the two second clamping seats.

[0010] Furthermore, the first clamping seat and the second clamping seat are both provided with countersunk holes, connecting bolts are arranged in the countersunk holes, and the clamping jaws of the three-jaw chuck are both provided with threaded holes for inserting the connecting bolts.

[0011] Furthermore, at least two countersunk holes are provided on the first clamping seat and the second clamping seat, and a connecting bolt is provided in each of the countersunk holes. Corresponding threaded holes matching the connecting bolts are provided on the clamping jaws of the three-jaw chuck.

[0012] Furthermore, the clamping bolts and the connecting bolts are all hexagon socket bolts.

[0013] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0014] The utility model provides a first clamping seat and a second clamping seat, a second clamping groove is provided on the second clamping seat, and the second clamping groove has a side wall of a circular arc section and a straight section. When the three-jaw chuck is closed, under the joint action of the side walls of the first clamping groove and the second clamping groove, the position of the accelerating tube coupler can be automatically adjusted, so that when the clamping is completed, the end face of the rectangular part on the accelerating tube coupler is directly opposite to the abutting piece, and there is no need to manually adjust the angle of the accelerating tube coupler, thereby improving the clamping efficiency and the clamping accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a structural schematic diagram of the accelerating tube coupler of the utility model;

[0017] Figure 2This is a schematic diagram of the use state of the accelerating tube coupler quick alignment fixture of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the first clamping seat, the second clamping seat and the fastening member of the utility model;

[0019] Icons: 1-three-jaw chuck, 11-claw, 2-first clamping seat, 21-first clamping groove, 22-countersunk hole, 23-connecting bolt, 3-second clamping seat, 31-second clamping groove, 311-arc segment, 312-straight segment, 32-accommodating groove, 4-fastening member, 41-fastening bolt, 42-fastening block, 421-rubber pad, 5-accelerator tube coupler, 51-circular part, 52-rectangular part. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1

[0023] The following is further described in conjunction with specific embodiments. Figure 1-Figure 3As shown, the utility model is a fast alignment fixture for an accelerating tube coupler, comprising a three-jaw chuck 1, wherein a first clamping seat 2 is arranged on one of the jaws 11 of the three-jaw chuck 1, a first clamping groove 21 is provided on the first clamping seat 2, the side wall of the first clamping groove is in an arc shape, and is adapted to the shape of a circular portion 51 of an accelerating tube coupler 5; the other two jaws 11 of the three-jaw chuck 1 are each provided with a second clamping seat 3, a second clamping groove 31 is provided on the second clamping seat 3, the side wall of the second clamping groove 31 comprises an arc segment 311 and a straight segment 312, the arc segment 311 is located on a side of the second clamping groove 31 close to the first clamping groove 21 and its shape is adapted to the circular portion 51, the straight segment 312 is located on a side of the second clamping groove 31 away from the first clamping groove 21 and its shape is adapted to the side of the rectangular portion 52. A clamping piece 4 for clamping against the end face of the rectangular portion 52 is provided on the side of the second clamping seat 3 away from the first clamping seat 2. When the three clamping claws 11 of the three-claw card move simultaneously in the direction close to the accelerating tube coupler 5, the first clamping groove 21 can fit with the circular portion 51, and the side wall of the second clamping groove 31 can fit with the side faces of the circular portion 51 and the rectangular portion 52 of the accelerating tube coupler 5 at the same time. In this process, the side wall of the second clamping groove 31 can automatically adjust the position of the accelerating tube coupler 5, so that when clamping is completed, the end face of the rectangular portion 52 on the accelerating tube coupler 5 is directly opposite to the clamping piece 4, and there is no need to manually adjust the angle of the accelerating tube coupler 5, thereby improving the clamping efficiency and clamping accuracy.

[0024] Reference Figure 2 , Figure 3 As shown, when the three clamping jaws 11 of the three-jaw chuck 1 are closed toward the center to the limit position, there is a gap between the first clamping seat 2 and the second clamping seat 3, and between the two second clamping seats 3, so as to ensure the reliability after clamping. It is avoided that the first clamping seat 2 and the second clamping seat 3 conflict with each other after moving to the limit position, resulting in a gap between the first clamping seat 2 or the second clamping seat 3 and the accelerating tube coupler 5, resulting in poor clamping effect.

[0025] Reference Figure 3 As shown, the abutting member 4 includes a abutting bolt 41 and a abutting block 42. The abutting bolt 41 is threadedly connected to the second clamping seat 3 and the length direction of the abutting bolt 41 is perpendicular to the end face of the rectangular portion 52 of the accelerating tube coupler 5. The abutting block 42 is rotatably connected to the end of the abutting bolt 41. By tightening the abutting bolt 41, the abutting block 42 can be moved and abutted against the end face of the rectangular portion 52 of the accelerating tube coupler 5, thereby achieving the positioning of the accelerating tube coupler 5. A rubber pad 421 is provided on one side of the abutting block 42 away from the abutting bolt 41 to avoid a rigid collision between the abutting block 42 and the accelerating tube coupler 5, thereby preventing the accelerating tube coupler 5 from being worn.

[0026] In this embodiment, the abutting block 42 is selected as a rectangular block, the width of which is greater than the thickness of the accelerating tube coupler 5, and the second clamping seat 3 is provided with a receiving groove 32 for receiving and moving the abutting block 42, the depth of which is greater than the depth of the second clamping groove 31. By making the width of the abutting block 42 greater than the thickness of the accelerating tube coupler 5, the contact area between the abutting block 42 and the accelerating tube coupler 5 is increased, thereby improving the positioning effect to a certain extent.

[0027] Reference Figure 3 As shown, the first clamping seat 2 and the second clamping seat 3 are both provided with countersunk holes 22, and the number of the countersunk holes 22 is at least two. A connecting bolt 23 is provided in each countersunk hole 22, and a threaded hole matching the connecting bolt 23 is correspondingly provided on the jaws 11 of the three-jaw chuck 1. The first clamping seat 2 and the second clamping seat 3 are respectively fixed to the jaws 11 of the three-jaw chuck 1 by at least two connecting bolts 23 to ensure the stability of the first clamping seat 2 and the second clamping seat 3 after installation.

[0028] In this embodiment, the tightening bolt 41 and the connecting bolt 23 are both hexagon socket bolts, and the entire nut of the hexagon socket bolt is sunk into the countersunk hole 22, which can keep the surface of the workpiece smooth and beautiful. And because the installation tool of the hexagon socket bolt is a hexagon wrench, it is suitable for more assembly occasions, especially in narrow occasions, so as to facilitate the loading and unloading process.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A quick alignment fixture for an accelerating tube coupler, characterized in that: The invention comprises a three-jaw chuck (1), wherein a first clamping seat (2) is arranged on one of the clamping jaws (11) of the three-jaw chuck (1), and a second clamping seat (3) is arranged on the other two clamping jaws (11) of the three-jaw chuck (1), wherein the first clamping seat (2) is provided with a first clamping groove (21), and the second clamping seat (3) is provided with a second clamping groove (31); A pressing piece (4) is provided on a side of the second clamping seat (3) away from the first clamping seat (2), and the pressing piece (4) is used to press against the end surface of the rectangular portion (52) of the accelerating tube coupler (5); The side wall of the first clamping groove (21) is in an arc shape, and the side wall of the second clamping groove (31) comprises an arc segment (311) and a straight segment (312), wherein the arc segment (311) is located on a side of the second clamping groove (31) close to the first clamping groove (21), and the straight segment (312) is located on a side of the second clamping groove (31) away from the first clamping groove (21).

2. The accelerating tube coupler quick alignment fixture according to claim 1, characterized in that: The clamping member (4) comprises a clamping bolt (41) and a clamping block (42); the clamping bolt (41) is threadedly connected to the second clamping seat (3) and the length direction of the clamping bolt (41) is perpendicular to the end face of the rectangular portion (52) of the accelerating tube coupler (5); and the clamping block (42) is rotatably connected to the end of the clamping bolt (41).

3. The accelerating tube coupler quick alignment fixture according to claim 2, characterized in that: The abutting block (42) is a rectangular block, the width of which is greater than the thickness of the accelerating tube coupler (5), and the second clamping seat (3) is provided with a receiving groove (32) for receiving and moving the abutting block (42), the depth of which is greater than the depth of the second clamping groove (31).

4. The accelerating tube coupler quick alignment fixture according to claim 2 or 3, characterized in that: A rubber cushion layer (421) is provided on a side of the clamping block (42) away from the clamping bolt (41).

5. The accelerating tube coupler quick alignment fixture according to claim 1, characterized in that: When the clamping jaws (11) of the three-jaw chuck (1) are closed, there is a gap between the first clamping seat (2) and the second clamping seat (3), and between the two second clamping seats (3).

6. The accelerating tube coupler quick alignment fixture according to claim 2, characterized in that: The first clamping seat (2) and the second clamping seat (3) are both provided with countersunk holes (22), connecting bolts (23) are arranged in the countersunk holes (22), and the clamping jaws (11) of the three-jaw chuck (1) are both provided with threaded holes for inserting the connecting bolts (23).

7. The accelerating tube coupler quick alignment fixture according to claim 6, characterized in that: At least two countersunk holes (22) are provided on the first clamping seat (2) and the second clamping seat (3), and a connecting bolt (23) is provided in each of the countersunk holes (22). Corresponding threaded holes matching the connecting bolts (23) are provided on the clamping jaws (11) of the three-jaw chuck (1).

8. The accelerating tube coupler quick alignment fixture according to claim 7, characterized in that: The tightening bolt (41) and the connecting bolt (23) are both hexagon socket bolts.

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