CN201079879Y

CN201079879Y - Braze welding assembly for coupling cavity travelling-wave tube slow wave component

Info

Publication number: CN201079879Y
Application number: CNU200720043072XU
Authority: CN
Inventors: 吴华夏; 方卫; 李锐; 肖兵
Original assignee: Anhui East China Institute of Optoelectronic Technology
Current assignee: Anhui East China Institute of Optoelectronic Technology
Priority date: 2007-08-03
Filing date: 2007-08-03
Publication date: 2008-07-02
Anticipated expiration: 2017-08-03

Abstract

The utility model discloses a braze soldering tool of a slow wave component of a coupled-cavity traveling-wave tube, and comprises a braze soldering bracket which consists of a bracket base, a bracket column and a bracket press plate. The utility model is characterized in that at least more than two positioning guide rods are symmetrically arranged between the bracket base and the bracket press plate and are parallel to the bracket column; the slow wave component to be soldered, a stainless steel pressure ring and a buffering element are sleeved on the positioning guide rods in sequence; the center of the bracket press plate is provided with a screw and a hold-down bolt passes through the screw and is connected with the buffering element in a pressing way. By adopting the structure, the slow wave component can expand by heat because the temperature raises during the braze soldering process, at the same time, the oxygen free copper of the buffering element can gradually soften along with the raising temperature, the contacting part of a hold-down screw generates the draw deformation, the expansion of the slow wave component is relaxed and a certain pressure is kept to the slow wave component, so as to lead that the relative position among all parts of the slow wave remains unchanged, at the same time, the deformation of the slow wave component can not be caused by the pressure, thereby improving the soldering qualification rate of the slow wave component.

Description

A kind of soldering frock of coupled-cavity TWT slow wave parts

Technical field

The utility model relates to the microwave device soldering, particularly a kind of soldering frock of coupled-cavity TWT slow wave parts.

Background technology

Travelling-wave tubes is in modern satellite communication, satellite navigation, demonstrates the effect of not replacing day by day especially in military electronics such as electronic jamming device, prior-warning plane, fire control radar, accurate guidance.Coupled-cavity TWT is the all-metal construction device, and the slow wave parts are vitals of travelling-wave tubes, and number of spare parts is many, weld seam is many, parts are long.Should guarantee that when soldering good concentricity and fitted position guarantee vacuum-tightness again.Therefore, high especially to the brazing quality requirement, and the frock of soldering is a precondition that guarantees to obtain high-quality soldering.Present soldering frock adopts briquetting or mostly with support and screw fixation method, after the soldering slow wave parts yielding, leak gas or make the standing wave variation, qualification rate is very low.

The utility model content

Technical problem to be solved in the utility model is, at the deficiencies in the prior art, a kind of soldering frock of coupled-cavity TWT slow wave parts is provided, to reach the relative position of each part in the slow wave parts that assemble is not changed, and the purpose that the slow wave parts can not be out of shape when soldering.

For solving the problems of the technologies described above, the technical solution of the utility model is, a kind of soldering frock of coupled-cavity TWT slow wave parts, comprise the soldering support of forming by bracket base, bracket upright post, support pressing plate, it is characterized in that: between described bracket base and support pressing plate, be parallel to bracket upright post and be provided with positioning and guiding bar more than at least two symmetrically; Need slow wave parts, stainless steel pressure ring, the bolster of soldering to be sleeved on successively on the positioning and guiding bar; Described support pressing plate center is provided with a screw, and hold-down bolt passes screw and bolster crimping.

The soldering frock of coupled-cavity TWT slow wave parts, described bolster are provided with circular step and are connected with stainless steel pressure ring end face.

The soldering frock of coupled-cavity TWT slow wave parts, the bottom of described bolster be the equidistant circular hole that is provided with symmetrically along the center of circle.

The soldering frock of coupled-cavity TWT slow wave parts, the thickness of the bottom of described bolster are 0.3～0.5mm.

The soldering frock of coupled-cavity TWT slow wave parts, described bracket upright post, positioning and guiding bar adopt the molybdenum material.

The soldering frock of coupled-cavity TWT slow wave parts, described bolster adopts unannealed oxygenless copper material.

The soldering frock of coupled-cavity TWT slow wave parts, owing to adopt said structure, compared with prior art: both guaranteed the rigging position between each part of slow wave parts, and in the process of soldering, rising because of temperature, slow wave parts meeting thermal expansion, the oxygen-free copper of bolster is with the rising deliquescing gradually of temperature simultaneously, part generation stretcher strain in the clamping screw contact, relax the expansion of slow wave parts and remain certain pressure to the slow wave parts, relative position between each part of slow wave is not changed, and this pressure can not make the slow wave part distortion yet simultaneously.Improved the qualification rate of slow wave parts solderings.This method of buffer substrate tablet of utilizing also goes in the soldering frock of miscellaneous part simultaneously.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail;

Fig. 1 is the soldering frock example structure schematic diagram of a kind of coupled-cavity TWT slow wave of the utility model parts;

Fig. 2 is a buffer substrate tablet master TV structure schematic diagram shown in Figure 1;

Fig. 3 is a buffer substrate tablet plan structure schematic diagram shown in Figure 1;

In Fig. 1 Fig. 3,1, bracket upright post; 2, positioning and guiding bar; 3, stainless steel pressure ring; 4, clamping screw; 5, bolster; 6, need the slow wave parts of soldering; 7, pilot hole; 8, circular hole; 9, bracket base; 10, support pressing plate; 11, circular step; 12, soldering point.

The specific embodiment

As Fig. 1～shown in Figure 3, a kind of soldering frock of coupled-cavity TWT slow wave parts, comprise the soldering support of forming by bracket base 9, bracket upright post 1, support pressing plate 10, between described bracket base 9 and support pressing plate 10, be parallel to the positioning and guiding bar 2 that bracket upright post 1 is provided with two symmetrically; Need slow wave parts 6, stainless steel pressure ring 3, the bolster 5 of soldering to be sleeved on successively on the positioning and guiding bar 2; Described support pressing plate 10 centers are provided with a screw, and clamping screw 4 passes screw and bolster 5 crimping.Bracket upright post 1, positioning and guiding bar 2 adopt the molybdenum material.In order to improve the intensity of bolster 5 marginal portions, upwards there is a circular step 11 at the edge.Make bolster 5 when high temperature during intermediate deformation and the marginal portion is indeformable.This circular step 11 matches with stainless steel pressure ring 3 end faces simultaneously.

Described bolster 5 is provided with 6 holes, and wherein 2 pilot holes 7 are positioned at bolster 5 edges, and the thickness of the bottom of bolster 5 is 0.3～0.5mm, and bolster 5 adopts unannealed oxygenless copper material.The bottom of bolster 5 is equidistant along the center of circle to be provided with 4 circular holes 8 symmetrically, to reduce the intensity of bolster 5 mid portions, is easy at high temperature be out of shape and alleviates slow wave parts 6 expansion at high temperature.The quantity of pilot hole 7 and circular hole 8 can increase and decrease as required.

Carrying out the pre-installed timing of soldering, needing the slow wave parts 6 of soldering to be assemblied on the brazing jig support, stainless steel pressure ring 3 is pressed on the slow wave parts 6 that need soldering.On stainless steel pressure ring 3, place bolster 5.Need slow wave parts 6, stainless steel pressure ring 3 and the bolster 5 of soldering all to pass two positioning and guiding bars 2, to guarantee the concentricity of each part of slow wave.Compress bolster 5 by clamping screw 4, make the position of each part of slow wave after assembling that skew and loosening can not take place.The slow wave parts 6 of the need soldering that assembles are to be compressed uniformly by clamping screw 4 by a stainless steel pressure ring 3 and bolster 5, and the middle stretcher strain part of bolster 5 should be positioned at the mid portion of the ring of stainless steel pressure ring 3.

In the process of soldering point 12 solderings on the slow wave parts 6 of need soldering, rising because of temperature, the 6 meeting thermal expansions of slow wave parts, bolster 5 oxygen-free coppers are with the rising deliquescing gradually of temperature simultaneously, part generation stretcher strain in clamping screw 4 contacts, relax the expansion of slow wave parts 6 and remain certain pressure to slow wave parts 6, the relative position between each part of slow wave is not changed, this pressure can not make 6 distortion of slow wave parts yet simultaneously.

In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted method design of the present utility model and technical scheme to carry out; or directly apply to other occasion without improvement, all within protection domain of the present utility model.

Claims

1. the soldering frock of coupled-cavity TWT slow wave parts, comprise the soldering support of forming by bracket base (9), bracket upright post (1), support pressing plate (10), it is characterized in that: be positioned between described bracket base (9) and the support pressing plate (10), be parallel to bracket upright post (1) and be provided with positioning and guiding bar (2) more than at least two symmetrically; Need slow wave parts (6), stainless steel pressure ring (3), the bolster (5) of soldering to be sleeved on successively on the positioning and guiding bar (2); Described support pressing plate (10) center is provided with a screw, and clamping screw (4) passes screw and bolster (5) crimping.

2. the soldering frock of coupled-cavity TWT slow wave parts according to claim 1 is characterized in that: described bolster (5) is provided with circular step (11) and is connected with stainless steel pressure ring (3) end face.

3. the soldering frock of coupled-cavity TWT slow wave parts according to claim 2 is characterized in that: the bottom of described bolster (5) is the equidistant circular hole (8) that is provided with symmetrically along the center of circle.

4. the soldering frock of coupled-cavity TWT slow wave parts according to claim 3 is characterized in that: the thickness of the bottom of described bolster (5) is 0.3～0.5mm.

5. the soldering frock of coupled-cavity TWT slow wave parts according to claim 1 is characterized in that: described bracket upright post (1), positioning and guiding bar (2) adopt the molybdenum material.

6. according to the soldering frock of each described coupled-cavity TWT slow wave parts of claim 1-5, it is characterized in that: described bolster (5) adopts unannealed oxygenless copper material.