CN214721300U - Furnace brazing positioning fixture for thin-wall feedback rod of electro-hydraulic servo valve - Google Patents
Furnace brazing positioning fixture for thin-wall feedback rod of electro-hydraulic servo valve Download PDFInfo
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- CN214721300U CN214721300U CN202120919164.XU CN202120919164U CN214721300U CN 214721300 U CN214721300 U CN 214721300U CN 202120919164 U CN202120919164 U CN 202120919164U CN 214721300 U CN214721300 U CN 214721300U
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Abstract
The utility model provides a furnace brazing positioning fixture for thin-walled feedback rods of electro-hydraulic servo valves, which is used for clamping and positioning the thin-walled feedback rods and comprises a bottom plate, a positioning plate, a clamping rod with a hook, a first positioning pin and a second positioning pin, wherein the positioning plate is arranged on the upper end surface of the bottom plate and is fixedly connected with the bottom plate through the first positioning pin; the clamping rod with the hook is arranged to be of an inverted L-shaped structure, the bottom of the clamping rod with the hook is vertically fixed on the positioning plate, and the top surface of the clamping rod with the hook is parallel to the positioning plate and extends to the center of the positioning plate; the base and the sleeve of the thin-wall feedback rod are sequentially sleeved on the second positioning pin, the sleeve is compressed and fixed through the compression nut, and the upper portion of the feedback rod is positioned through the top surface of the clamping rod with the hook by means of the clamping pin. The utility model discloses can the accurate position accuracy of guaranteeing each size key element among the welding Assembly, improve production efficiency simultaneously.
Description
Technical Field
The utility model belongs to electro-hydraulic servo valve makes the field, concretely relates to be used for brazing positioning fixture in electro-hydraulic servo valve thin wall formula feedback rod stove.
Background
The feedback rod of the existing electro-hydraulic servo valve adopts a structure that the circular section is molded and turned into a whole, or adopts a sheet metal method to fold and clamp, or adopts a method that a fine grinding small ball is turned at the end part to be matched with a precise groove for use. Therefore, it is very necessary to design a positioning device for the feedback rod of the thin-wall electro-hydraulic servo valve, which can accurately position the feedback rod, improve the quality of weldment and reduce the cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a be used for brazing positioning fixture in electro-hydraulic servo valve thin wall formula feedback rod stove, the bottom plate is fixed through the locating pin with the locating plate, it colludes the anchor clamps to combine to take to carry on spacingly and fix through the screw thread locating pin feedback rod again, use the method of brazing in the stove behind the accurate positioning, can not only the accurate position precision who guarantees each size factor in the welding assembly, can also when having improved product quality and production efficiency, greatly reduced the cost.
The utility model discloses a realize through following technical scheme:
a furnace brazing positioning fixture for a thin-walled feedback rod of an electro-hydraulic servo valve is used for clamping and positioning the thin-walled feedback rod, the thin-walled feedback rod comprises a feedback rod seat, a feedback rod and a sleeve which are arranged on the feedback rod seat, and a ball handle piece arranged at the top of the feedback rod, the positioning fixture comprises a bottom plate, a positioning plate, a hooked clamping rod, a first positioning pin and a second positioning pin, the bottom plate is a cylindrical bottom plate, the positioning plate is a square positioning plate, the positioning plate is arranged on the bottom plate, the first positioning pin is arranged between the bottom plate and the positioning plate and is positioned at the center of the upper end surface of the bottom plate and the center of the bottom of the positioning plate, and the bottom plate and the positioning plate are fixedly connected through the first positioning pin; the second positioning pin is arranged on the upper end surface of the positioning plate, and one side of the feedback rod seat is provided with rectangular grooves which are parallel to the second positioning pin and vertically downward and are used for fixing the bottom of the feedback rod; the clamping bar with the hook is arranged to be of an inverted L-shaped structure, the bottom of the side edge of the clamping bar with the hook is vertically fixed on the positioning plate, the top surface of the clamping bar with the hook is parallel to the positioning plate, and the end part of the clamping bar with the hook extends to the center of the positioning plate and is used for fixing the feedback rod.
Preferably, the bottom of the positioning plate and the center of the upper end surface of the bottom plate are both provided with inner holes, and the diameters of the two inner holes are equal to the diameter of the first positioning pin.
Preferably, the outer diameter of the second positioning pin is equal to the inner diameter of the sleeve, and the second positioning pin is coaxially arranged with the sleeve.
Preferably, a compression nut is arranged on the second positioning pin, and a thread on the second positioning pin is matched with the compression nut and used for compressing and fixing the sleeve.
Preferably, the end of the top surface of the hooked clamping rod is provided with a folding hook bent inwards, and the upper part of the feedback rod is tightly attached to the inner side of the folding hook and is positioned through a clamping pin.
Preferably, the length and the width of the rectangular groove on the positioning plate are the same as those of the slot on the feedback rod seat, and the position of the rectangular groove corresponds to the position of the feedback rod.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. the utility model discloses a be used for brazing positioning fixture in electro-hydraulic servo valve thin wall formula feedback rod stove utilizes positioning fixture to fix a position the feedback rod, adopts the method of brazing in the stove, can guarantee accurately that position accuracy, roughness and the cooperation precision of each size factor in the welding subassembly, still very big reduction cost.
2. The utility model discloses a be used for brazing positioning fixture in electro-hydraulic servo valve thin wall formula feedback rod stove, the position control of welding back part is good, draws intensity and satisfies the operation requirement, has reduced the manufacturing time of part by a wide margin, and operation process is simple and convenient effective, possesses higher uniformity.
Drawings
FIG. 1 is a schematic view of the overall structure of the furnace brazing positioning fixture for thin-walled feedback rods of electro-hydraulic servo valves according to the present invention;
FIG. 2 is a top view of the furnace brazing positioning fixture for thin-walled feedback rods of electro-hydraulic servo valves according to the present invention;
fig. 3 is a schematic structural diagram of the thin-wall feedback rod of the present invention.
The notation in the figure is:
a base plate 1; a positioning plate 2; a hooked clamping rod 3; a thin-walled feedback rod 4; a ball shank member 41; a feedback lever 42; a sleeve 43; a feedback rod mount 44; a compression nut 5; a second positioning pin 6; a first positioning pin 7; a clamping pin 8; a rectangular groove 9; a folding hook 10.
Detailed Description
Exemplary embodiments, features and aspects of the present invention will be described in detail below with reference to the accompanying drawings. Although various aspects of the embodiments are illustrated in the drawings, which may refer to functionally identical or similar elements, the drawings are not necessarily drawn to scale unless specifically indicated.
The utility model discloses a be used for brazing positioning fixture in electro-hydraulic servo valve thin wall formula feedback rod stove for press from both sides tight location to thin wall formula feedback rod, as shown in figure 3, thin wall formula feedback rod 4 includes feedback rod seat 44, sets up feedback rod 42 and sleeve pipe 43 on feedback rod seat 44, and sets up the ball handle spare 41 at feedback rod 42 top, the utility model discloses to thin wall formula feedback rod, adopt the rectangular cross-section of big aspect ratio, preferably use the spring steel band blanking processing that the size uniformity is better, preferably use low-priced high-quality steel ball one-tenth, through positioning fixture to thin wall formula feedback rod 4 presss from both sides tight location, adopts the method of brazing in the stove, can the accurate position accuracy, surface roughness and the cooperation precision of guaranteeing each size element in the welding assembly, makes the drawing strength of part satisfy operation requirement, has reduced the manufacturing time of part by a large margin, and the operation process is simple, convenient and effective, and has higher consistency.
As shown in fig. 1-2, the positioning fixture includes a base plate 1, a positioning plate 2, a hooking rod 3, a first positioning pin 7 and a second positioning pin 6. The locating plate 2 is arranged on the upper end face of the bottom plate 1, the bottom plate 1 is a cylindrical bottom plate, and a cylindrical inner hole is formed in the center of the upper end face of the bottom plate. The positioning plate 2 is a square positioning plate, and a cylindrical inner hole is also formed in the center of the bottom of the positioning plate. The two cylindrical inner holes have the same diameter and correspond to each other in position and are used for placing the first positioning pin 7. The height sum of two bores is greater than the height of first locating pin, and the lower terminal surface of locating plate 2 and the up end of bottom plate 1 are through the first locating pin 7 fixed connection and laminating each other that set up in the bore, play the firm effect in location.
The center of the upper end face of the positioning plate 2 is provided with a second positioning pin 6, the lower half part of the second positioning pin 6 is fixed in the positioning plate 2, and the upper half part of the second positioning pin 6 is exposed out of the positioning plate 2 and used for fixing a feedback rod seat 44 and a sleeve 43 of the thin-wall feedback rod 4.
The outer diameter of the second positioning pin 6 is the same as the inner diameter of the sleeve 43, and the second positioning pin 6 and the sleeve 43 are coaxially arranged, so that the sleeve 43 and the feedback rod seat 44 are exactly sleeved on the second positioning pin 6. The second positioning pin 6 is provided with a thread which is matched with the specification of the compression nut 5, and the sleeve 43 and the feedback rod seat 44 are fixedly connected with the positioning plate 2 by means of the matching of the second positioning pin 6 and the compression nut 5.
The positioning plate is further provided with a vertically downward rectangular groove 9, the rectangular groove 9 is located on one side of the second positioning pin 6 and is parallel to the second positioning pin, the length and the width of the rectangular groove 9 are the same as those of a slot which is arranged at the bottom of the feedback rod seat 44 and used for fixing the feedback rod, the position of the rectangular groove 9 corresponds to the feedback rod 42, and when the bottom of the feedback rod 42 is inserted into the slot which is matched with the feedback rod seat 44, the protruding part at the bottommost of the feedback rod seat 44 just extends into the rectangular groove 9, so that the feedback rod seat 44 is horizontally fixed.
The clamping bar 3 with the hook is arranged to be of an inverted L-shaped structure, the bottom of the side edge of the clamping bar 3 with the hook is vertically fixed on the positioning plate 2, the top surface of the clamping bar 3 with the hook is parallel to the positioning plate 2, and the end part of the clamping bar extends to the center of the positioning plate 2 and is used for fixing the feedback rod. And the top end of the hooked clamping rod 3 is provided with a folding hook 10 bent inwards, the position of the folding hook 10 corresponds to the position of the rectangular groove 9 positioned below the folding hook, and the upper part of the feedback rod 42 is tightly attached to the inner side position of the folding hook 10 and is positioned by the clamping pin 8. The bent hook 10 is used for clamping and fixing the upper part of the feedback rod 42, and the rectangular groove 9 is used for fixing the lower part of the feedback rod 42.
The following further describes embodiments of the present invention:
the utility model discloses bottom plate 1 and locating plate 2 are through 7 fixed connection of first locating pin, and the sleeve pipe 43 on the thin wall formula feedback rod 4 inserts the circular recess of the circular port of taking of feedback rod seat 44, then takes feedback rod seat 44 to embolia together and set up on the screwed second locating pin 6, with feedback rod seat 44 after the direction of setting, the position that is about to feedback rod 42 with set up the rectangular channel 9 on locating plate 2 after to last, compress tightly sleeve pipe 43 and feedback rod seat 44 through gland nut 5. The feedback rod 42 is tightly attached to the positioning direction by means of the bent hook 10 at the end part of the top surface of the hooked clamping rod 3, the feedback rod seat 44 is downwards inserted to be pressed to the bottom, the bottom of the feedback rod 42 is fixed, then the clamping pin 8 is screwed in to clamp the upper part of the feedback rod 42, then the compression nut 5 and the clamping pin 8 are sequentially and respectively screwed, the feedback rod 42 is quickly and accurately positioned and clamped, furnace brazing welding is carried out, and the welded assembly needs to weld the four parts of the ball handle piece, the feedback rod, the sleeve and the feedback rod seat into an integrated structure.
When the multi-station fixture is used, more positioning fixtures can be fixed on the bottom plate 1 according to the structure, and the efficiency is improved. And use the utility model discloses a welding drawing force after the positioning fixture welding satisfies the operation requirement, and the part position is accurate, and efficiency is higher, and is respond well.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.
Claims (6)
1. A furnace brazing positioning fixture for a thin-walled feedback rod of an electro-hydraulic servo valve is used for clamping and positioning the thin-walled feedback rod and is characterized in that the thin-walled feedback rod comprises a feedback rod seat, a feedback rod and a sleeve which are arranged on the feedback rod seat, and a ball handle piece arranged at the top of the feedback rod, the positioning fixture comprises a bottom plate, a positioning plate, a hooked clamping rod, a first positioning pin and a second positioning pin,
the bottom plate is a cylindrical bottom plate, the positioning plate is a square positioning plate, the positioning plate is arranged on the bottom plate, the first positioning pin is arranged between the bottom plate and the positioning plate and is positioned at the center of the upper end surface of the bottom plate and the center of the bottom of the positioning plate, and the bottom plate and the positioning plate are fixedly connected through the first positioning pin;
the second positioning pin is arranged on the upper end surface of the positioning plate, and one side of the feedback rod seat is provided with rectangular grooves which are parallel to the second positioning pin and vertically downward and are used for fixing the bottom of the feedback rod;
the clamping bar with the hook is arranged to be of an inverted L-shaped structure, the bottom of the side edge of the clamping bar with the hook is vertically fixed on the positioning plate, the top surface of the clamping bar with the hook is parallel to the positioning plate, and the end part of the clamping bar with the hook extends to the center of the positioning plate and is used for fixing the feedback rod.
2. The furnace brazing positioning fixture for the thin-walled feedback rod of the electro-hydraulic servo valve as claimed in claim 1, wherein inner holes are formed in the bottom of the positioning plate and the center of the upper end surface of the bottom plate, and the diameters of the two inner holes are equal to the diameter of the first positioning pin.
3. The furnace brazing positioning fixture for the thin-walled feedback rod of the electro-hydraulic servo valve according to claim 1, wherein the outer diameter of the second positioning pin is equal to the inner diameter of the sleeve, and the second positioning pin and the sleeve are coaxially arranged.
4. The furnace brazing positioning fixture for the thin-walled feedback rod of the electro-hydraulic servo valve as claimed in claim 1, wherein a compression nut is arranged on the second positioning pin, and a thread on the second positioning pin is matched with the compression nut for compressing and fixing the sleeve.
5. The furnace brazing positioning fixture for the thin-walled feedback rod of the electro-hydraulic servo valve as claimed in claim 1, wherein a hook bent inwards is arranged at an end of the top surface of the hooked clamping rod, and the upper part of the feedback rod is tightly attached to the inner side of the hook and positioned by a clamping pin.
6. The furnace brazing positioning fixture for the thin-walled feedback rod of the electro-hydraulic servo valve as claimed in claim 1, wherein the length and the width of the rectangular groove on the positioning plate are the same as those of the slot on the feedback rod seat, and the position of the rectangular groove corresponds to the position of the feedback rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120919164.XU CN214721300U (en) | 2021-04-29 | 2021-04-29 | Furnace brazing positioning fixture for thin-wall feedback rod of electro-hydraulic servo valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120919164.XU CN214721300U (en) | 2021-04-29 | 2021-04-29 | Furnace brazing positioning fixture for thin-wall feedback rod of electro-hydraulic servo valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214721300U true CN214721300U (en) | 2021-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120919164.XU Active CN214721300U (en) | 2021-04-29 | 2021-04-29 | Furnace brazing positioning fixture for thin-wall feedback rod of electro-hydraulic servo valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214721300U (en) |
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2021
- 2021-04-29 CN CN202120919164.XU patent/CN214721300U/en active Active
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