CN218855478U - Feedback wire bending device of jet pipe servo valve - Google Patents

Abstract

The application provides a efflux pipe servovalve feedback silk bending apparatus, the bending apparatus includes: the base comprises an arc edge and a mounting groove; the positioning baffle comprises a vertical plate, the positioning baffle is arranged in the mounting groove, and the positioning baffle is used for positioning the feedback wires; the push rod comprises a hollow part and a roller arranged at the opening of the hollow part; the hollow part is sleeved on the vertical plate, and when the feedback wire is bent, the roller can extrude the feedback wire until the feedback wire is attached to the arc edge; the application provides a pair of efflux pipe servovalve feedback silk bending device carries out the little diameter feedback silk bending of efflux pipe servovalve, has guaranteed the crooked size precision of feedback silk, and qualification rate and efficiency promote greatly.

Description

Feedback wire bending device of jet pipe servo valve

Technical Field

The application belongs to the technical field of servo valve machining, and particularly relates to a jet pipe servo valve feedback wire bending device.

Background

Because the feedback wire of the jet pipe servo valve needs to be bent to be in contact with the valve core, the bending angle influences the feedback performance, and further influences the force balance performance of the valve core, the feedback wire needs to be bent at a specific position according to a specific angle, the requirement on the bending size precision is strict, the bent part of the feedback wire has no defect, and the size is accurate.

The bending by the traditional method cannot ensure the dimensional accuracy, the bending part is easy to wrinkle, the product consistency is poor, and the qualification rate is low.

SUMMERY OF THE UTILITY MODEL

To above-mentioned technical problem, the application provides a efflux pipe servovalve feedback silk bending apparatus, the bending apparatus includes:

the base comprises an arc edge and a mounting groove;

the positioning baffle comprises a vertical plate, the positioning baffle is arranged in the mounting groove, and the positioning baffle is used for positioning the feedback wires;

the push rod comprises a hollow part and a roller arranged at the opening of the hollow part;

the hollow part is sleeved on the vertical plate, and when the feedback wire is bent, the roller can extrude the feedback wire until the feedback wire is attached to the arc edge.

Preferably, the roller is rotatably connected to the opening of the hollow part, and a first groove is formed in the roller and used for accommodating and extruding the feedback wire.

Preferably, the circular arc edge comprises a straight line segment, a circular arc segment and a first accommodating groove; the straight line section is used for placing the head of the feedback wire, the circular arc section is used for bending the feedback wire, and the first accommodating groove is used for accommodating the bottom of the feedback wire.

Preferably, the radian of the arc segment is determined based on the feedback performance of the jet pipe servo valve and the material of the feedback wire.

Preferably, the positioning baffle further comprises:

the second groove is used for accommodating and positioning the feedback wire;

and the second accommodating groove is communicated with the second groove and is used for accommodating the bottom of the feedback wire.

Preferably, the bending apparatus further comprises:

and the fastening screw is used for fixing the positioning baffle.

The beneficial technical effect of this application:

the application provides a pair of efflux pipe servovalve feedback silk bending device carries out the little diameter feedback silk bending of efflux pipe servovalve, has guaranteed the crooked size precision of feedback silk, and qualification rate and efficiency promote greatly.

Drawings

Fig. 1 is a schematic structural diagram of a feedback wire bending device of a jet pipe servo valve according to an embodiment of the present disclosure;

fig. 2 is a cross-sectional view of a base of a feedback wire bending device of a jet pipe servo valve provided in an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a positioning baffle of a feedback wire bending device of a jet pipe servo valve according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a push rod of a feedback wire bending device of a jet pipe servo valve according to an embodiment of the present disclosure;

fig. 5 is a cross-sectional view of a roller of a feedback wire bending device of a jet pipe servo valve provided in an embodiment of the present application;

FIG. 6 is a diagram illustrating a state of use of a feedback wire bending device of a jet pipe servo valve according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a feedback wire of a servo valve of a jet pipe according to an embodiment of the present disclosure;

wherein: 1-a base; 101-mounting grooves; 2-positioning a baffle plate; 201-a vertical plate; 202-a second groove; 203-a second accommodating groove; 3-a feedback wire; 4-a push rod; 5-a roller; 501-a first groove; 6-tightening the screw; 7-arc edge; 701-straight line segment; 702-a circular arc segment; 703-a first accommodating groove; 8-a pin; 9-threaded hole.

Detailed Description

It should be noted that aiming at the problems of poor bending precision and poor consistency of the feedback wire of the jet pipe servo valve in the traditional method, a bending device which is simple, convenient and quick and suitable for the feedback wire is designed, the bending of the feedback wire is realized, and the problems of fold, low bending precision and poor consistency of the feedback wire are avoided.

Referring to fig. 1-7, the present application provides a feedback wire bending device for a jet pipe servo valve, which is mainly composed of a base 1, a positioning baffle 2, a set screw 6, a push rod 4, a roller 5, and a pin 8.

Wherein, the roller 5 is assembled at the front end fork of the push rod 4 through the pin 8, the roller 5 and the pin 8 are in clearance fit, the clearance is between 0 and 0.1mm, and the pin 8 and the push rod 4 are in transition fit; the positioning baffle 2 is placed in the mounting groove 101 of the base 1, the bottom surface of the positioning baffle 2 is matched with the bottom surface of the mounting groove 101 of the base 1, and the positioning baffle 2 is tightly pressed by screwing the set screw 6 into the base 1; the hollow part of the push rod 4 is sleeved in the vertical plate 201 of the positioning baffle 2, and the two are in clearance fit, and the clearance is between 0 and 0.1 mm.

Wherein, the center of the first groove 501 of the roller 5 and the center of the second groove 202 (i.e. the feedback wire slot) of the positioning baffle 2 are positioned on the same central line. The positioning baffle 2 is made of aluminum, and the roller 5 is made of hard plastic to prevent parts from being crushed. Half the second holding tank 203 of putting into positioning baffle 2 of feedback silk base that will need the bending, insert positioning baffle 2 and feedback silk edgewise in base 1's mounting groove 101, embolia the riser 201 of positioning baffle 2 with 4 hollow portions of push rod, the first recess 501 of gyro wheel 5 and the cooperation of feedback silk 3, drive gyro wheel 5 through promoting push rod 4 and accomplish the bending processing with the feedback silk according to the radian of the circular arc limit 7 of base 1.

The circular arc edge includes a straight line segment 701, a circular arc segment 702, and a first receiving groove 703.

Particularly, the device is used for bending the micro-diameter feedback wire of the jet pipe servo valve, the bending size precision of the feedback wire is ensured, and the qualification rate and the efficiency are greatly improved. Provides a new method and a new idea for processing other similar parts.

In other embodiments of the present application, the present application further discloses:

step 1: design and production device

1) The base is the basis of whole device, and other parts need install on the base, have a rectangular channel on the base for install the positioning baffle, and the tiny grooving of tank bottom one side is used for putting into a part of feedback silk base, and the side constitutes the tubulose space with positioning baffle waist type groove, plays the guide effect to the feedback silk. The side surface of the rectangular groove of the base is connected with the arc surface to form a feedback wire forming surface, the distance from the groove bottom to the arc surface and the shape of the arc surface control the bending shape of the feedback wire, and the arc surface end point cut groove is also used for fitting the shape of the feedback wire. For the feedback wires with different size requirements, different profiles can be manufactured according to the requirements, and the bending processing of different feedback wires can be adapted. The front of the base is provided with a threaded hole, and the positioning baffle is fixed through a fastening screw.

2) The side of the positioning baffle is provided with 1 waist-shaped groove and 1 semi-circular groove. During operation, the base rectangular groove is required to be inserted, and a fastening screw penetrates through the threaded hole to be fixed on the base. The center lines of the waist-shaped groove and the semicircular positioning groove are positioned on the middle surface of the convex part of the positioning baffle.

3) And the fastening screw penetrates through the threaded hole to fix the positioning baffle on the base.

4) The push rod is integrally of a fork-shaped structure, two pin holes are formed in two ends of the front fork, the middle distance between the two forks is in transition fit with the protruding portion of the positioning baffle, the push rod can move along the protruding portion of the positioning baffle, and the middle face of the push rod and the protruding middle face of the positioning baffle are located in the same plane as far as possible.

5) The roller is provided with a through hole in the center, the roller is installed on the push rod by penetrating two pin holes through a pin, and the roller is in clearance fit with the pin to ensure that the roller can freely rotate around the pin. And a semi-circular groove is processed on the cylindrical surface of the roller and is attached to the processed material.

6) And the outer diameter of the pin is matched with the pin holes and penetrates through the two pin holes, and the roller is arranged on the push rod.

And step 3: application device

1) And the inspection device sleeves the push rod into the protrusion of the positioning baffle and adjusts the push rod to a working zero position.

2) And putting the processed part into the positioning baffle plate waist-shaped groove, scratching the processed part into the base rectangular groove together with the side surface of the processed part, and screwing in the set screw to fix the positioning baffle plate.

3) And checking whether the material is tightly assembled and whether the positioning baffle is fixed.

4) According to demand angle a, base side angle b, all can kick-back after the bending of each kind of metal material generally, different materials, different specification resilience angle c is different, so for realizing the bending of angle a, base side angle b = a-c.

5) And discharging the processed material. And finishing the bending processing.

The application provides an effectual solution many varieties, small batch of the device, and the two-dimensional bending processing of small dimension feedback silk, convenient and fast, it is with low costs.

In other embodiments of the present application, the present application further discloses that the material is beryllium bronze, and the feedback wire with the outer diameter of Φ 1 is bent into a shape with an angle a.

Step 1: resolving requirements

The material is beryllium bronze, and the outer diameter phi is 1 +/-0.02. The cross section of the positioning groove on the positioning baffle is designed to be arched, the radius of the semicircle is larger than R0.5 and can not be too large, and the radius is determined to be

And the distance from the semi-circle vertex to the side is the positioning reference to ensure that the outer diameter of the feedback wire can be put in and is determined as->

The roller working groove is also designed to be circular, is smaller than the size of a semicircle, has a radius larger than R0.51, and is determined to be R0.51 +/-0.01 in order to ensure the accurate bending angle.

Step 2: design and manufacture device

The base, the part that is bent is less, and base appearance structure designs into 40X 30, and the screw hole designs into M3 on the base, and the constant head tank is determined to be 40X 16X 6.

The positioning baffle is defined by a semicircular groove

Length from semi-circle vertex to side is->

The positioning is ensured, and the semicircular groove is determined as R2.1 to prevent the interference with the root of the feedback wire.

And the fastening screw penetrates through the threaded hole to fix the positioning baffle on the base.

The push rod is of a fork-shaped structure, two pin holes are formed in two ends of the front fork and are determined to be phi 2, and the distance between the two holes is 5, namely the height of the roller. The middle distance of the two forks is in transition fit with the raised part of the positioning baffle plate, so that the push rod can move along the raised part of the positioning baffle plate, and the middle surface of the push rod and the raised middle surface of the positioning baffle plate are in the same plane as much as possible.

The roller is integrally cylindrical, and the central through hole is designed to be phi 2 and is installed in a matching mode with the pin. The semicircular working groove is arranged on the cylindrical surface, and is determined as R0.51 +/-0.01.

And the pin has the outer diameter of phi 2, is matched with the pin holes, penetrates through the two pin holes and is used for mounting the roller on the push rod.

And step 3: application device

And the checking device is used for sleeving the push rod into the protrusion of the positioning baffle and adjusting to a working zero position.

A part to be processed made of beryllium bronze phi 1 is placed into the positioning baffle waist-shaped groove, the side face of the part is scratched into the rectangular groove of the base, and the positioning baffle is fixed by screwing in a set screw.

And checking whether the material is tightly assembled or not and whether the positioning baffle is fixed or not.

According to demand angle a, base side angle b, all can kick-back after the bending of each kind of metal material generally, different materials, different specification resilience angle c is different, so for realizing the bending of angle a, base side angle b = a-c.

And unloading the processed material. And finishing the bending processing.

Claims (6)

1. A jet pipe servo valve feedback wire bending device is characterized in that the bending device comprises:

the base comprises an arc edge and a mounting groove;

the positioning baffle comprises a vertical plate, the positioning baffle is arranged in the mounting groove, and the positioning baffle is used for positioning the feedback wires;

the push rod comprises a hollow part and a roller arranged at the opening of the hollow part;

the hollow part is sleeved on the vertical plate, and when the feedback wire is bent, the roller can extrude the feedback wire until the feedback wire is attached to the arc edge.

2. The jet pipe servo valve feedback wire bending device according to claim 1, wherein the roller is rotatably connected to the opening of the hollow part, and a first groove is formed in the roller and used for accommodating and pressing the feedback wire.

3. The jet pipe servo valve feedback wire bending device according to claim 2, wherein the circular arc edge comprises a straight line segment, a circular arc segment and a first receiving groove;

the straight line section is used for placing the head of the feedback wire, the circular arc section is used for bending the feedback wire, and the first accommodating groove is used for accommodating the bottom of the feedback wire.

4. The jet pipe servo valve feedback wire bending device according to claim 3, wherein the radian of the arc segment is determined based on the feedback performance of the jet pipe servo valve and the material of the feedback wire.

5. The fluidic tube servo valve feedback wire bender as claimed in claim 4, wherein the positioning baffle further comprises:

the second groove is used for accommodating and positioning the feedback wire;

and the second accommodating groove is communicated with the second groove and is used for accommodating the bottom of the feedback wire.

6. The fluidic tube servo valve feedback wire bending device of claim 1, further comprising:

and the fastening screw is used for fixing the positioning baffle.

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