Aircraft speed regulator oil distribution valve shallow boss measuring device

Abstract

The invention discloses an airplane speed regulator oil distribution valve shallow boss measuring device, and relates to the technical field of measuring devices.The airplane speed regulator oil distribution valve shallow boss measuring device comprises a tool body, a measuring jaw and a spring lifting pin, workpiece grooves and a clamp groove are formed in the top face of the tool body, a measuring groove is formed in the bottom of the tool body, and the workpiece grooves are located in the two sides of the clamp groove and higher than the clamp groove; the workpiece groove is used for placing a to-be-measured workpiece, two ends of the to-be-measured workpiece are placed in the workpiece groove, the middle boss is clamped between the clamp groove and the end part of the measuring jaw, the middle part of the clamp groove is provided with a through hole, the middle part of the measuring jaw is hinged in the through hole, and the measuring jaw can swing in the through hole; the upper end of the measuring jaw and one side of the clamp groove form a movable clamp, the lower end of the measuring jaw abuts against the spring lifting pin and the dial indicator, the spring lifting pin and the dial indicator are oppositely arranged, the clamp is used for clamping a boss of a workpiece to be measured, and the spring lifting pin is slidably arranged on the tool body. The invention relates to a device for measuring the width of a shallow boss of an oil distribution valve of an airplane speed regulator, which realizes rapid and accurate measurement of the oil distribution valve of the speed regulator.

Description

Technical Field

[0001] The invention relates to the technical field of measuring devices, in particular to a measuring device for a shallow boss of an oil distribution valve of an aircraft speed governor. Background Art

[0002] The oil separator valve of a certain type of speed governor is an important part for controlling the pressure oil entering the propeller's high-pitch oil chamber. Its key characteristic is the width of the cylindrical boss that matches the annular wall groove of the oil separator bushing. Due to structural problems, it is difficult to accurately measure the width of the middle boss of the speed governor oil separator valve. This cylindrical surface is a shallow boss cylindrical surface in the middle of three cylindrical surfaces. Due to processing capacity limitations, the upper and lower end surfaces of this cylindrical surface cannot be completely perpendicular to the cylindrical surface.

[0003] At present, when using a normal micrometer to measure the boss of the oil distributor valve of the speed governor, the repeated measurement error is large due to the influence of the tightening force of the micrometer and the depth of the measured boss. The measurement error between different operators is about 0.01mm-0.02mm. Since the clearance here requires a small tolerance and high precision, this measurement error has a great impact on the production and assembly process. The size can only be more accurate when it is measured closer to the outside of the cylindrical surface, which is too dependent on the operator's measurement technique. Therefore, it is urgent to design a device for measuring the width of the shallow boss of the oil distributor valve of the aircraft speed governor to achieve fast and accurate measurement of the oil distributor valve of the speed governor. Summary of the invention

[0004] The purpose of the present invention is to provide a shallow boss measuring device for an aircraft speed governor oil separator valve, so as to solve the problems existing in the above-mentioned prior art and enable the speed governor oil separator valve to be measured quickly and accurately.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a shallow boss measuring device for an aircraft speed governor oil distribution valve, comprising a tooling body, a measuring jaw and a spring push pin, wherein the top surface of the tooling body is provided with a workpiece groove and a fixture groove, and the bottom is provided with a measuring groove, the workpiece grooves are located on both sides of the fixture groove and are higher than the fixture groove, the workpiece groove is used to place a workpiece to be measured, the two ends of the workpiece to be measured are placed in the workpiece grooves, the middle boss is clamped between the fixture groove and the end of the measuring jaw, a through hole is provided in the middle of the fixture groove, the middle part of the measuring jaw is hinged in the through hole and the measuring jaw can swing in the through hole, the upper end of the measuring jaw forms a movable clamp with one side of the fixture groove, and the lower end is respectively abutted with the outer end of the spring push pin and the detection end of the micrometer, the spring push pin and the micrometer are arranged relatively to each other, the fixture is used to clamp the boss of the workpiece to be measured, and the spring push pin is slidably arranged on the tooling body.

[0007] Preferably, a core shaft is vertically connected to the bottom through hole of the clamp groove by bolts, a square hole is provided on the core shaft, and the middle part of the measuring jaw is connected to the square hole by a pin shaft.

[0008] Preferably, a gap is provided between the clamping surface of the measuring jaws and two opposite side surfaces of the hole above the core shaft, and the gap is 0.4 mm-1 mm.

[0009] Preferably, a clamp stopper is connected to the bottom of the clamp groove via bolts, and the clamp stopper and the measuring jaw form the movable clamp.

[0010] Preferably, the clamp stopper is a rectangular stopper, and the middle portion of the rectangular stopper is connected to the bottom of the clamp slot via a pair of positioning pins and a pair of bolts.

[0011] Preferably, the clamping surface of the measuring jaw is a plane, the opposite surface of the clamping surface is provided with a V-shaped section, and the hinge axis of the measuring jaw is located on the inner side of the intersection of the V-shaped section.

[0012] Preferably, the spring ejector pin comprises a spring, an ejector pin and a pull rod, a ejector pin hole is arranged below the tooling body, one end of the ejector pin hole is blocked, the spring and the ejector pin are arranged in sequence in the ejector pin hole, a pair of waist-shaped through holes are respectively opened on both sides of the ejector pin hole, the pull rod passes through the waist-shaped through hole and the ejector pin, and the protrusions at both ends are the tooling body.

[0013] Preferably, the ejector pin hole is a through hole, and a bolt is connected to the end of the ejector pin hole; the outer end of the ejector pin is a hemispherical surface.

[0014] Preferably, a dial gauge hole is provided below the tooling body, and the dial gauge hole is coaxially arranged with the ejector pin hole of the spring ejector pin; an open bushing is provided in the dial gauge hole, and an adjusting bolt is threadedly connected to the side of the tooling body, and the inner end of the adjusting bolt can abut against the open bushing, and the micrometer is inserted in the open bushing.

[0015] Preferably, the workpiece groove is a V-shaped groove, and the workpiece groove is perpendicular to the center line of the fixture groove.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] The invention discloses a device for conveniently and quickly measuring the width of a shallow boss of an oil separator valve of an aircraft speed governor, thereby realizing the rapid and accurate measurement of the oil separator valve of the speed governor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of a shallow boss measuring device for an aircraft speed governor oil distribution valve according to an embodiment of the present invention;

[0020] Figure 2 It is a front view of a device for measuring a shallow boss of an oil distribution valve of an aircraft speed governor in an embodiment of the present invention;

[0021] Figure 3 For the embodiment of the present invention Figure 2 Schematic diagram of the cross-sectional structure of AA;

[0022] In the figure: 1- tooling body, 2- workpiece slot, 3- fixture slot, 4- measuring slot, 5- fixture stopper, 6- positioning pin, 7- spindle, 8- measuring claw, 9- pin shaft, 10- bolt, 11- ejector pin, 12- spring, 13- pull rod, 14- open bushing, 15- adjusting bolt, 16- micrometer, 17- standard counter-piece, 18- waist-shaped through hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0024] The purpose of the present invention is to provide a shallow boss measuring device for an aircraft speed governor oil distribution valve, so as to solve the problems existing in the prior art and enable the speed governor oil distribution valve to be measured quickly and accurately.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Embodiment 1

[0027] like Figures 1 to 3As shown, in this embodiment, a shallow boss measuring device for an aircraft speed governor oil distribution valve is provided, comprising a tooling body 1, a measuring jaw 8 and a spring push pin. A workpiece slot 2 and a fixture slot 3 are provided on the top surface of the tooling body 1, and a measuring slot 4 is provided on the bottom. The workpiece slot 2 is located on both sides of the fixture slot 3 and is higher than the fixture slot 3. The workpiece slot 2 is used to place the workpiece to be measured. The two ends of the workpiece to be measured are placed in the workpiece slot 2, and the middle boss is clamped between the fixture slot 3 and the end of the measuring jaw 8. A through hole is provided in the middle of the fixture slot 3, and the middle part of the measuring jaw 8 is hinged in the through hole and the measuring jaw 8 can swing in the through hole. The upper end of the measuring jaw 8 forms a movable fixture with one side of the fixture slot 3, and the lower end is respectively abutted against the outer end of the spring push pin and the detection end of the micrometer 16. The spring push pin and the micrometer 16 are arranged relatively to each other. The fixture is used to clamp the boss of the workpiece to be measured, and the spring push pin is slidably arranged on the tooling body 1.

[0028] As an optional solution, in this embodiment, a mandrel 7 is vertically connected to the bottom through hole of the fixture slot 3 by a bolt 10, and the mandrel 7 is fixed. A square hole is set on the mandrel 7, and the middle part of the measuring claw 8 is connected to the square hole by a pin 9. The mandrel 7 can be set to adjust the position of the measuring claw in the vertical direction. The top of the mandrel 7 is preferably assembled flush with the fixture block 5. After the position is determined, the bolt 10 is tightened to lock it, and then the mandrel 7 is welded and fixed. Direct grooving cannot determine the specific position of the measuring claw 8, and the punching position cannot be determined.

[0029] As an optional solution, in this embodiment, a gap is provided between the clamping surface of the measuring jaws 8 and the two opposite side surfaces of the hole above the core shaft 7 , and the gap is 0.4 mm-1 mm, preferably 0.5 mm, to facilitate the swinging of the measuring jaws 8 .

[0030] As an optional solution, in this embodiment, the bottom of the clamp groove 3 is connected to a clamp stopper 5 by a bolt 10, and the clamp stopper 5 and the measuring claw 8 form a movable clamp, and the clamp stopper 5 is used to locate the standard alignment part 17 or the shallow boss position of the oil distribution valve.

[0031] As an optional solution, in this embodiment, the clamp block 5 is a rectangular block, and the middle part of the rectangular block is connected to the bottom of the clamp slot 3 through a pair of positioning pins 6 and a pair of bolts to fix the position of the clamp block 5. The clamp block 5 determines the specific installation position through the positioning pins 6 to ensure that the horizontal positioning of the clamp block 5 is correct, and the bolts are used to fix and lock the clamp block 5.

[0032] As an optional solution, the clamping surface of the measuring jaw 8 in this embodiment is a plane, and the opposite surface of the clamping surface is provided with a V-shaped section, which is convenient for swinging, and then convenient for clamping the boss of the workpiece to be measured, and the hinge axis of the measuring jaw 8 is located on the inner side of the intersection of the V-shaped sections. In this embodiment, the measuring jaw 8 is a movable part, one end of which is used to clamp the shallow boss of the oil separation valve, and the other end is against the micrometer 16 to transmit the displacement value.

[0033] As an optional solution, the spring ejector pin in this embodiment includes a spring 12, an ejector pin 11 and a pull rod 13. A ejector pin hole is provided below the tool body 1, one end of the ejector pin hole is blocked, and the spring 12 and the ejector pin 11 are sequentially provided in the ejector pin hole. A pair of waist-shaped through holes 18 are respectively provided on both sides of the ejector pin hole. The pull rod 13 passes through the waist-shaped through hole 18 and the ejector pin 11, and the two ends protrude from the tool body 1. The spring ejector pin is used to press against the lower end of the measuring claw 8, and the lever function is used to enable the upper end of the measuring claw 8 to clamp the boss of the workpiece to be measured; the spring 12 can be used to provide an axial thrust for the ejector pin 11, so that the ejector pin 11 can always press against the measuring claw 8; when the pull rod 13 is used to clamp the boss of the workpiece to be measured, the ejector pin 11 is pulled to open the top of the measuring claw 8.

[0034] As an optional solution, in this embodiment, the ejector pin hole is a through hole, and a bolt 10 is connected to the end of the ejector pin hole to adjust the size of the spring force; the outer end of the ejector pin 11 is a hemispherical surface, which is convenient for abutting with the measuring claws 8 at various angles.

[0035] As an optional solution, in this embodiment, a meter insertion hole is provided below the tool body 1, and the meter insertion hole is coaxially arranged with the ejector pin hole of the spring ejector pin; an open bushing 14 is provided in the meter insertion hole, and an adjusting bolt 15 is threadedly connected to the side of the tool body 1, which can adjust the tightness of the open bushing 14, and the inner end of the adjusting bolt 15 can abut against the open bushing 14, and a micrometer 16 is inserted in the open bushing 14. Among them, the ends of the spring ejector pin, the micrometer 16 and the measuring claw 8 are all located in the measuring groove 4; the open bushing 14 is a hollow cylindrical copper sleeve with an open side wall, and its inner diameter can be changed by squeezing its side wall with the adjusting bolt, thereby clamping the dial rod of the micrometer 16.

[0036] As an optional solution, in this embodiment, the workpiece groove 2 is a V-shaped groove used to support the oil separation valve; the workpiece groove 2 is perpendicular to the center line of the fixture groove 3, so that the middle boss of the workpiece to be tested can be directly fitted in the fixture groove 3.

[0037] This embodiment provides a tooling assembly for measuring the shallow boss of the speed regulator oil separator valve. It is easy to use and quick to measure, and can effectively reduce the measurement error caused by the measurement technique, thus overcoming the problem that the prior art cannot accurately measure the width of the boss of the speed regulator oil separator valve.

[0038] Embodiment 2

[0039] This embodiment provides a method for measuring the shallow boss of the oil distribution valve of the aircraft speed governor by using the standard gauge 17. The specific operation process and working principle are as follows:

[0040] S1, insert the dial gauge 16 into the tooling installation port and press it against the measuring claws 8, tighten the adjusting bolt 15, so that the open bushing 14 clamps the dial gauge 16.

[0041] S2, pull the pull rod 13 to move the push pin 11 in the direction of the compression spring 12. At this time, the measuring jaws 8 rotate around the cylindrical pin under the compression force of the micrometer 16, and the distance between the measuring jaws 8 and the fixture block 5 is opened; place the standard alignment part 17 in the V-groove of the tooling body 1, and make the boss of the standard alignment part 17 between the fixture block 5 and the measuring jaws 8, and slowly remove the pulling force of the pull rod 13 on the push pin 11. The push pin 11 pushes the measuring jaws 8 under the action of the spring force, and the measuring jaws 8 rotate around the cylindrical pin and clamp the boss of the standard alignment part 17 together with the fixture block 5.

[0042] S3, adjust the dial of the thousandth meter to 0.

[0043] S4, pull the pull rod 13 to open the distance between the measuring claw 8 and the fixture stopper 5, and remove the standard table piece 17.

[0044] S5, place the oil-separating valve to be tested on the fixture according to the above 2S operations, so that the measuring claws 8 and the fixture block 5 clamp the workpiece to be tested (the shallow boss of the oil-separating valve), and read the actual measured value A of the micrometer 16 at this time. If it is assumed that the boss width value of the standard gauge 17 is X, the measured value of the shallow boss of the oil-separating valve is B = X + A.

[0045] In the embodiment, the opening and closing of the measuring jaws 8 are controlled by the push pin 11, and the measuring jaws 8 and the clamp block 5 are used to clamp the shallow boss of the oil-separating valve. The lower end of the measuring jaws 8 is in contact with the micrometer 16, and the measuring jaws 8 are pre-tightened by the head of the micrometer 16. The micrometer 16 is fixed by the combination of the adjusting bolt 15 and the open bushing 14. The width of the shallow boss of the oil-separating valve is calculated by measuring the moving distance of the measuring jaws 8 and comparing it with the boss width of the measured standard gauge 17. This method can ensure that the position and measuring force measured by the measuring jaws 8 and the block are consistent, thereby effectively improving the accuracy of the measurement data.

[0046] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A shallow boss measuring device for an aircraft speed governor oil distribution valve, characterized in that: The tool body comprises a tooling main body, a measuring jaw and a spring push pin, wherein a workpiece slot and a fixture slot are provided on the top surface of the tooling main body, and a measuring slot is provided on the bottom, wherein the workpiece slots are located on both sides of the fixture slot and are higher than the fixture slot, wherein the workpiece slot is used to place the workpiece to be measured, wherein the two ends of the workpiece to be measured are placed in the workpiece slots, and the middle boss is clamped between the fixture slot and the end of the measuring jaw, wherein a through hole is provided in the middle of the fixture slot, wherein the middle part of the measuring jaw is hinged in the through hole and the measuring jaw can swing in the through hole, wherein the upper end of the measuring jaw forms a movable fixture with one side of the fixture slot, and the lower end respectively abuts against the outer end of the spring push pin and the detection end of the micrometer, wherein the spring push pin and the micrometer are arranged opposite to each other, and the fixture is used to clamp the boss of the workpiece to be measured, and the spring push pin is slidably arranged on the tooling main body.

2. The aircraft speed governor oil distribution valve shallow boss measuring device according to claim 1, characterized in that: A core shaft is vertically connected in the bottom through hole of the clamp groove through bolts, a square hole is arranged on the core shaft, and the middle part of the measuring claw is connected in the square hole through a pin shaft.

3. The aircraft speed governor oil distribution valve shallow boss measuring device according to claim 2, characterized in that: A gap is provided between the clamp surface of the measuring jaws and two opposite side surfaces of the hole above the core shaft, and the gap is 0.4mm-1mm.

4. The aircraft speed governor oil distribution valve shallow boss measuring device according to claim 1, characterized in that: A clamp stopper is connected to the bottom of the clamp groove via bolts, and the clamp stopper and the measuring claw form the movable clamp.

5. The aircraft speed governor oil distribution valve shallow boss measuring device according to claim 1, characterized in that: The clamp stopper is a rectangular stopper, and the middle portion of the rectangular stopper is connected to the bottom of the clamp slot via a pair of positioning pins and a pair of bolts.

6. The aircraft speed governor oil distribution valve shallow boss measuring device according to claim 1, characterized in that: The clamping surface of the measuring jaw is a plane, and the opposite surface of the clamping surface is provided with a V-shaped section, and the hinge axis of the measuring jaw is located at the inner side of the intersection of the V-shaped section.

7. The aircraft speed governor oil distribution valve shallow boss measuring device according to claim 1, characterized in that: The spring ejector pin includes a spring, an ejector pin and a pull rod. A ejector pin hole is arranged below the tooling body. One end of the ejector pin hole is blocked. The spring and the ejector pin are arranged in sequence in the ejector pin hole. A pair of waist-shaped through holes are respectively opened on both sides of the ejector pin hole. The pull rod passes through the waist-shaped through hole and the ejector pin, and the protrusions at both ends are the tooling body.

8. The aircraft speed governor oil distribution valve shallow boss measuring device according to claim 7, characterized in that: The ejector pin hole is a through hole, and a bolt is connected to the end of the ejector pin hole; the outer end of the ejector pin is a hemispherical surface.

9. The aircraft speed governor oil distribution valve shallow boss measuring device according to claim 1, characterized in that: A dial gauge hole is provided below the tooling body, and the dial gauge hole is coaxially arranged with the ejector pin hole of the spring ejector pin; an open bushing is provided in the dial gauge hole, and an adjusting bolt is threadedly connected to the side of the tooling body, and the inner end of the adjusting bolt can abut against the open bushing, and the micrometer is inserted in the open bushing.

10. The aircraft speed governor oil distribution valve shallow boss measuring device according to claim 1, characterized in that: The workpiece groove is a V-shaped groove, and the workpiece groove is perpendicular to the center line of the fixture groove.

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